linux/drivers/scsi/lpfc/lpfc_nvme.c

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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
* Broadcom refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2004-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.broadcom.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
********************************************************************/
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <asm/unaligned.h>
#include <linux/crc-t10dif.h>
#include <net/checksum.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>
#include "lpfc_version.h"
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc.h"
#include "lpfc_nvme.h"
#include "lpfc_scsi.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"
/* NVME initiator-based functions */
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
static struct lpfc_io_buf *
lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
int idx, int expedite);
static void
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *);
static struct nvme_fc_port_template lpfc_nvme_template;
/**
* lpfc_nvme_create_queue -
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnvme_lport: Transport localport that LS is to be issued from
* @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @qsize: Size of the queue in bytes
* @handle: An opaque driver handle used in follow-up calls.
*
* Driver registers this routine to preallocate and initialize any
* internal data structures to bind the @qidx to its internal IO queues.
* A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ.
*
* Return value :
* 0 - Success
* -EINVAL - Unsupported input value.
* -ENOMEM - Could not alloc necessary memory
**/
static int
lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport,
unsigned int qidx, u16 qsize,
void **handle)
{
struct lpfc_nvme_lport *lport;
struct lpfc_vport *vport;
struct lpfc_nvme_qhandle *qhandle;
char *str;
if (!pnvme_lport->private)
return -ENOMEM;
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
vport = lport->vport;
qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL);
if (qhandle == NULL)
return -ENOMEM;
qhandle->cpu_id = raw_smp_processor_id();
qhandle->qidx = qidx;
/*
* NVME qidx == 0 is the admin queue, so both admin queue
* and first IO queue will use MSI-X vector and associated
* EQ/CQ/WQ at index 0. After that they are sequentially assigned.
*/
if (qidx) {
str = "IO "; /* IO queue */
qhandle->index = ((qidx - 1) %
lpfc_nvme_template.max_hw_queues);
} else {
str = "ADM"; /* Admin queue */
qhandle->index = qidx;
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
"6073 Binding %s HdwQueue %d (cpu %d) to "
"hdw_queue %d qhandle x%px\n", str,
qidx, qhandle->cpu_id, qhandle->index, qhandle);
*handle = (void *)qhandle;
return 0;
}
/**
* lpfc_nvme_delete_queue -
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnvme_lport: Transport localport that LS is to be issued from
* @qidx: An cpu index used to affinitize IO queues and MSIX vectors.
* @handle: An opaque driver handle from lpfc_nvme_create_queue
*
* Driver registers this routine to free
* any internal data structures to bind the @qidx to its internal
* IO queues.
*
* Return value :
* 0 - Success
* TODO: What are the failure codes.
**/
static void
lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport,
unsigned int qidx,
void *handle)
{
struct lpfc_nvme_lport *lport;
struct lpfc_vport *vport;
if (!pnvme_lport->private)
return;
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
vport = lport->vport;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
"6001 ENTER. lpfc_pnvme x%px, qidx x%x qhandle x%px\n",
lport, qidx, handle);
kfree(handle);
}
static void
lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport)
{
struct lpfc_nvme_lport *lport = localport->private;
lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME,
"6173 localport x%px delete complete\n",
lport);
/* release any threads waiting for the unreg to complete */
if (lport->vport->localport)
complete(lport->lport_unreg_cmp);
}
/* lpfc_nvme_remoteport_delete
*
* @remoteport: Pointer to an nvme transport remoteport instance.
*
* This is a template downcall. NVME transport calls this function
* when it has completed the unregistration of a previously
* registered remoteport.
*
* Return value :
* None
*/
static void
lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport)
{
struct lpfc_nvme_rport *rport = remoteport->private;
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
u32 fc4_xpt_flags;
ndlp = rport->ndlp;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
if (!ndlp) {
pr_err("**** %s: NULL ndlp on rport %p remoteport %p\n",
__func__, rport, remoteport);
goto rport_err;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
}
vport = ndlp->vport;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
if (!vport) {
pr_err("**** %s: Null vport on ndlp %p, ste x%x rport %p\n",
__func__, ndlp, ndlp->nlp_state, rport);
goto rport_err;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
}
fc4_xpt_flags = NVME_XPT_REGD | SCSI_XPT_REGD;
/* Remove this rport from the lport's list - memory is owned by the
* transport. Remove the ndlp reference for the NVME transport before
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
* calling state machine to remove the node.
*/
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
"6146 remoteport delete of remoteport %p\n",
remoteport);
spin_lock_irq(&ndlp->lock);
/* The register rebind might have occurred before the delete
* downcall. Guard against this race.
*/
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
if (ndlp->fc4_xpt_flags & NLP_WAIT_FOR_UNREG)
ndlp->fc4_xpt_flags &= ~(NLP_WAIT_FOR_UNREG | NVME_XPT_REGD);
spin_unlock_irq(&ndlp->lock);
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
/* On a devloss timeout event, one more put is executed provided the
* NVME and SCSI rport unregister requests are complete. If the vport
* is unloading, this extra put is executed by lpfc_drop_node.
*/
if (!(ndlp->fc4_xpt_flags & fc4_xpt_flags))
lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
rport_err:
return;
}
/**
* lpfc_nvme_handle_lsreq - Process an unsolicited NVME LS request
* @phba: pointer to lpfc hba data structure.
* @axchg: pointer to exchange context for the NVME LS request
*
* This routine is used for processing an asychronously received NVME LS
* request. Any remaining validation is done and the LS is then forwarded
* to the nvme-fc transport via nvme_fc_rcv_ls_req().
*
* The calling sequence should be: nvme_fc_rcv_ls_req() -> (processing)
* -> lpfc_nvme_xmt_ls_rsp/cmp -> req->done.
* __lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg.
*
* Returns 0 if LS was handled and delivered to the transport
* Returns 1 if LS failed to be handled and should be dropped
*/
int
lpfc_nvme_handle_lsreq(struct lpfc_hba *phba,
struct lpfc_async_xchg_ctx *axchg)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
struct lpfc_vport *vport;
struct lpfc_nvme_rport *lpfc_rport;
struct nvme_fc_remote_port *remoteport;
struct lpfc_nvme_lport *lport;
uint32_t *payload = axchg->payload;
int rc;
vport = axchg->ndlp->vport;
lpfc_rport = axchg->ndlp->nrport;
if (!lpfc_rport)
return -EINVAL;
remoteport = lpfc_rport->remoteport;
if (!vport->localport)
return -EINVAL;
lport = vport->localport->private;
if (!lport)
return -EINVAL;
rc = nvme_fc_rcv_ls_req(remoteport, &axchg->ls_rsp, axchg->payload,
axchg->size);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6205 NVME Unsol rcv: sz %d rc %d: %08x %08x %08x "
"%08x %08x %08x\n",
axchg->size, rc,
*payload, *(payload+1), *(payload+2),
*(payload+3), *(payload+4), *(payload+5));
if (!rc)
return 0;
#endif
return 1;
}
/**
* __lpfc_nvme_ls_req_cmp - Generic completion handler for a NVME
* LS request.
* @phba: Pointer to HBA context object
* @vport: The local port that issued the LS
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* This function is the generic completion handler for NVME LS requests.
* The function updates any states and statistics, calls the transport
* ls_req done() routine, then tears down the command and buffers used
* for the LS request.
**/
void
__lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport,
struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct nvmefc_ls_req *pnvme_lsreq;
struct lpfc_dmabuf *buf_ptr;
struct lpfc_nodelist *ndlp;
uint32_t status;
pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
ndlp = (struct lpfc_nodelist *)cmdwqe->context1;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6047 NVMEx LS REQ %px cmpl DID %x Xri: %x "
"status %x reason x%x cmd:x%px lsreg:x%px bmp:x%px "
"ndlp:x%px\n",
pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
cmdwqe->sli4_xritag, status,
(wcqe->parameter & 0xffff),
cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp);
lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x parm x%x\n",
cmdwqe->sli4_xritag, status, wcqe->parameter);
if (cmdwqe->context3) {
buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3;
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
cmdwqe->context3 = NULL;
}
if (pnvme_lsreq->done)
pnvme_lsreq->done(pnvme_lsreq, status);
else
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6046 NVMEx cmpl without done call back? "
"Data %px DID %x Xri: %x status %x\n",
pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
cmdwqe->sli4_xritag, status);
if (ndlp) {
lpfc_nlp_put(ndlp);
cmdwqe->context1 = NULL;
}
lpfc_sli_release_iocbq(phba, cmdwqe);
}
static void
lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_vport *vport = cmdwqe->vport;
struct lpfc_nvme_lport *lport;
uint32_t status;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
if (vport->localport) {
lport = (struct lpfc_nvme_lport *)vport->localport->private;
if (lport) {
atomic_inc(&lport->fc4NvmeLsCmpls);
if (status) {
if (bf_get(lpfc_wcqe_c_xb, wcqe))
atomic_inc(&lport->cmpl_ls_xb);
atomic_inc(&lport->cmpl_ls_err);
}
}
}
__lpfc_nvme_ls_req_cmp(phba, vport, cmdwqe, wcqe);
}
static int
lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
struct lpfc_dmabuf *inp,
struct nvmefc_ls_req *pnvme_lsreq,
void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
struct lpfc_wcqe_complete *),
struct lpfc_nodelist *ndlp, uint32_t num_entry,
uint32_t tmo, uint8_t retry)
{
struct lpfc_hba *phba = vport->phba;
union lpfc_wqe128 *wqe;
struct lpfc_iocbq *genwqe;
struct ulp_bde64 *bpl;
struct ulp_bde64 bde;
int i, rc, xmit_len, first_len;
/* Allocate buffer for command WQE */
genwqe = lpfc_sli_get_iocbq(phba);
if (genwqe == NULL)
return 1;
wqe = &genwqe->wqe;
/* Initialize only 64 bytes */
memset(wqe, 0, sizeof(union lpfc_wqe));
genwqe->context3 = (uint8_t *)bmp;
genwqe->iocb_flag |= LPFC_IO_NVME_LS;
/* Save for completion so we can release these resources */
genwqe->context1 = lpfc_nlp_get(ndlp);
scsi: lpfc: Rework locations of ndlp reference taking Now that the driver has gone to a normal ref interface (with no odd logic) the discovery logic needs to be updated to reworked so that it properly takes references when it should and give them up when it should. Rework the driver for the following get/put model: - Move gets to just before an I/O is issued. Add gets for places where an I/O was issued without one. - Ensure that failures from lpfc_nlp_get() are handled by the driver. - Check and fix the placement of lpfc_nlp_puts relative to io completions. Note: some of these paths may not release the reference on the exact io completion as the reference is held as the code takes another step in the discovery thread and which may cause another io to be issued. - Rearrange some code for error processing and calling lpfc_nlp_put. - Fix some places of incorrect reference freeing that was causing the premature releasing of the structure. - Nvmet plogi handling performs unreg_rpi's. The reference counts were unbalanced resulting in premature node removal. In some cases this caused loss of node discovery. Corrected the reftaking around nvmet plogis. Nodes that experience devloss now get released from the node list now that there is a proper reference taking. Link: https://lore.kernel.org/r/20201115192646.12977-3-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:31 +08:00
if (!genwqe->context1) {
dev_warn(&phba->pcidev->dev,
"Warning: Failed node ref, not sending LS_REQ\n");
lpfc_sli_release_iocbq(phba, genwqe);
return 1;
}
genwqe->context2 = (uint8_t *)pnvme_lsreq;
/* Fill in payload, bp points to frame payload */
if (!tmo)
/* FC spec states we need 3 * ratov for CT requests */
tmo = (3 * phba->fc_ratov);
/* For this command calculate the xmit length of the request bde. */
xmit_len = 0;
first_len = 0;
bpl = (struct ulp_bde64 *)bmp->virt;
for (i = 0; i < num_entry; i++) {
bde.tus.w = bpl[i].tus.w;
if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64)
break;
xmit_len += bde.tus.f.bdeSize;
if (i == 0)
first_len = xmit_len;
}
genwqe->rsvd2 = num_entry;
genwqe->hba_wqidx = 0;
/* Words 0 - 2 */
wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->generic.bde.tus.f.bdeSize = first_len;
wqe->generic.bde.addrLow = bpl[0].addrLow;
wqe->generic.bde.addrHigh = bpl[0].addrHigh;
/* Word 3 */
wqe->gen_req.request_payload_len = first_len;
/* Word 4 */
/* Word 5 */
bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0);
bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1);
bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1);
bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ);
bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME);
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag);
/* Word 7 */
bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1));
bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3);
bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE);
bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI);
/* Word 8 */
wqe->gen_req.wqe_com.abort_tag = genwqe->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag);
/* Word 10 */
bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
/* Word 11 */
bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND);
/* Issue GEN REQ WQE for NPORT <did> */
genwqe->wqe_cmpl = cmpl;
genwqe->iocb_cmpl = NULL;
genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT;
genwqe->vport = vport;
genwqe->retry = retry;
lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n",
genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID);
rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe);
if (rc) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6045 Issue GEN REQ WQE to NPORT x%x "
"Data: x%x x%x rc x%x\n",
ndlp->nlp_DID, genwqe->iotag,
vport->port_state, rc);
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
lpfc_nlp_put(ndlp);
lpfc_sli_release_iocbq(phba, genwqe);
return 1;
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_ELS,
"6050 Issue GEN REQ WQE to NPORT x%x "
"Data: oxid: x%x state: x%x wq:x%px lsreq:x%px "
"bmp:x%px xmit:%d 1st:%d\n",
ndlp->nlp_DID, genwqe->sli4_xritag,
vport->port_state,
genwqe, pnvme_lsreq, bmp, xmit_len, first_len);
return 0;
}
/**
* __lpfc_nvme_ls_req - Generic service routine to issue an NVME LS request
* @vport: The local port issuing the LS
* @ndlp: The remote port to send the LS to
* @pnvme_lsreq: Pointer to LS request structure from the transport
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @gen_req_cmp: Completion call-back
*
* Routine validates the ndlp, builds buffers and sends a GEN_REQUEST
* WQE to perform the LS operation.
*
* Return value :
* 0 - Success
* non-zero: various error codes, in form of -Exxx
**/
int
__lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct nvmefc_ls_req *pnvme_lsreq,
void (*gen_req_cmp)(struct lpfc_hba *phba,
struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe))
{
struct lpfc_dmabuf *bmp;
struct ulp_bde64 *bpl;
int ret;
uint16_t ntype, nstate;
scsi: lpfc: Rework remote port ref counting and node freeing When a remote port is disconnected and disappears, its node structure (ndlp) stays allocated and on a vport node list. While on the list it can be matched, thus requires validation checks on state to be added in numerous code paths. If the node comes back, its possible for there to be multiple node structures for the same device on the vport node list. There is no reason to keep the node structure around after it is no longer in existence, and the current implementation creates problems for itself (multiple nodes) and lots of unnecessary code for state validation. Additionally, the reference taking on the node structure didn't follow the normal model used by the kernel kref api. It included lots of odd logic to match state with reference count. The combination of this odd logic plus the way it was implicitly used in the discovery engine made its reference taking implementation suspect and extremely hard to follow. Change the driver such that the reference taking routines are now normal ref increments/decrements and callout on refcount=0. With this in place, the rework can be done such that the node structure is fully removed and deallocated when the remote port no longer exists and all references are removed. This removal logic, and the basic ref counting are intrically tied, thus in a single patch. Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:30 +08:00
if (!ndlp) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6051 NVMEx LS REQ: Bad NDLP x%px, Failing "
"LS Req\n",
ndlp);
return -ENODEV;
}
ntype = ndlp->nlp_type;
nstate = ndlp->nlp_state;
if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) ||
(ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6088 NVMEx LS REQ: Fail DID x%06x not "
"ready for IO. Type x%x, State x%x\n",
ndlp->nlp_DID, ntype, nstate);
return -ENODEV;
}
/*
* there are two dma buf in the request, actually there is one and
* the second one is just the start address + cmd size.
* Before calling lpfc_nvme_gen_req these buffers need to be wrapped
* in a lpfc_dmabuf struct. When freeing we just free the wrapper
* because the nvem layer owns the data bufs.
* We do not have to break these packets open, we don't care what is
* in them. And we do not have to look at the resonse data, we only
* care that we got a response. All of the caring is going to happen
* in the nvme-fc layer.
*/
bmp = kmalloc(sizeof(*bmp), GFP_KERNEL);
if (!bmp) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6044 NVMEx LS REQ: Could not alloc LS buf "
"for DID %x\n",
ndlp->nlp_DID);
return -ENOMEM;
}
bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys));
if (!bmp->virt) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6042 NVMEx LS REQ: Could not alloc mbuf "
"for DID %x\n",
ndlp->nlp_DID);
kfree(bmp);
return -ENOMEM;
}
INIT_LIST_HEAD(&bmp->list);
bpl = (struct ulp_bde64 *)bmp->virt;
bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma));
bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma));
bpl->tus.f.bdeFlags = 0;
bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
bpl++;
bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma));
bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma));
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
bpl->tus.f.bdeSize = pnvme_lsreq->rsplen;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6149 NVMEx LS REQ: Issue to DID 0x%06x lsreq x%px, "
"rqstlen:%d rsplen:%d %pad %pad\n",
ndlp->nlp_DID, pnvme_lsreq, pnvme_lsreq->rqstlen,
pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
&pnvme_lsreq->rspdma);
ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr,
pnvme_lsreq, gen_req_cmp, ndlp, 2,
LPFC_NVME_LS_TIMEOUT, 0);
if (ret != WQE_SUCCESS) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6052 NVMEx REQ: EXIT. issue ls wqe failed "
"lsreq x%px Status %x DID %x\n",
pnvme_lsreq, ret, ndlp->nlp_DID);
lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys);
kfree(bmp);
return -EIO;
}
return 0;
}
/**
* lpfc_nvme_ls_req - Issue an NVME Link Service request
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnvme_lport: Transport localport that LS is to be issued from.
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @pnvme_rport: Transport remoteport that LS is to be sent to.
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnvme_lsreq: the transport nvme_ls_req structure for the LS
*
* Driver registers this routine to handle any link service request
* from the nvme_fc transport to a remote nvme-aware port.
*
* Return value :
* 0 - Success
* non-zero: various error codes, in form of -Exxx
**/
static int
lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport,
struct nvme_fc_remote_port *pnvme_rport,
struct nvmefc_ls_req *pnvme_lsreq)
{
struct lpfc_nvme_lport *lport;
struct lpfc_nvme_rport *rport;
struct lpfc_vport *vport;
int ret;
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
if (unlikely(!lport) || unlikely(!rport))
return -EINVAL;
vport = lport->vport;
if (vport->load_flag & FC_UNLOADING)
return -ENODEV;
atomic_inc(&lport->fc4NvmeLsRequests);
ret = __lpfc_nvme_ls_req(vport, rport->ndlp, pnvme_lsreq,
lpfc_nvme_ls_req_cmp);
if (ret)
atomic_inc(&lport->xmt_ls_err);
return ret;
}
/**
* __lpfc_nvme_ls_abort - Generic service routine to abort a prior
* NVME LS request
* @vport: The local port that issued the LS
* @ndlp: The remote port the LS was sent to
* @pnvme_lsreq: Pointer to LS request structure from the transport
*
* The driver validates the ndlp, looks for the LS, and aborts the
* LS if found.
*
* Returns:
* 0 : if LS found and aborted
* non-zero: various error conditions in form -Exxx
**/
int
__lpfc_nvme_ls_abort(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct nvmefc_ls_req *pnvme_lsreq)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *wqe, *next_wqe;
bool foundit = false;
if (!ndlp) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6049 NVMEx LS REQ Abort: Bad NDLP x%px DID "
"x%06x, Failing LS Req\n",
ndlp, ndlp ? ndlp->nlp_DID : 0);
return -EINVAL;
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS,
"6040 NVMEx LS REQ Abort: Issue LS_ABORT for lsreq "
"x%p rqstlen:%d rsplen:%d %pad %pad\n",
pnvme_lsreq, pnvme_lsreq->rqstlen,
pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma,
&pnvme_lsreq->rspdma);
/*
* Lock the ELS ring txcmplq and look for the wqe that matches
* this ELS. If found, issue an abort on the wqe.
*/
pring = phba->sli4_hba.nvmels_wq->pring;
spin_lock_irq(&phba->hbalock);
spin_lock(&pring->ring_lock);
list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) {
if (wqe->context2 == pnvme_lsreq) {
wqe->iocb_flag |= LPFC_DRIVER_ABORTED;
foundit = true;
break;
}
}
spin_unlock(&pring->ring_lock);
if (foundit)
scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers This patch reworks the abort interfaces such that SLI-3 retains the iocb-based formatting and completions and SLI-4 now uses native WQEs and completion routines. The following changes are made: - The code is refactored from a confusing 2 routine sequence of xx_abort_iotag_issue(), which creates/formats and abort cmd, and xx_issue_abort_tag(), which then issues and handles the completion of the abort cmd - into a single interface of xx_issue_abort_iotag(). The new interface will determine whether SLI-3 or SLI-4 and then call the appropriate handler. A completion handler can now be specified to address the differences in completion handling. Note: original code is all iocb based, with SLI-4 converting to SLI-3 for the SCSI/ELS path, and NVMe natively using wqes. - The SLI-3 side is refactored: The older iocb-base lpfc_sli_issue_abort_iotag() routine is combined with the logic of lpfc_sli_abort_iotag_issue() as well as the iocb-specific code in lpfc_abort_handler() and lpfc_sli_abort_iocb() to create the new single SLI-3 abort routine that formats and issues the iocb. - The SLI-4 side is refactored and added to: The native WQE abort code in NVMe is moved to the new SLI-4 issue_abort_iotag() routine. Items in SCSI that set fields not set by NVMe is migrated into the new routine. Thus the routine supports NVMe and SCSI initiators. The nvmet block (target) formats the abort slightly different (like the old NVMe initiator) thus it has its own prep routine stolen from NVMe initiator and it retains the current code it has for issuing the WQE (does not use the commonized routine the initiators do). SLI-4 completion handlers were also added. - lpfc_abort_handler now becomes a wrapper that determines whether SLI-3 or SLI-4 and calls the proper abort handler. Link: https://lore.kernel.org/r/20201115192646.12977-16-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:44 +08:00
lpfc_sli_issue_abort_iotag(phba, pring, wqe, NULL);
spin_unlock_irq(&phba->hbalock);
if (foundit)
return 0;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS,
"6213 NVMEx LS REQ Abort: Unable to locate req x%p\n",
pnvme_lsreq);
return -EINVAL;
}
static int
lpfc_nvme_xmt_ls_rsp(struct nvme_fc_local_port *localport,
struct nvme_fc_remote_port *remoteport,
struct nvmefc_ls_rsp *ls_rsp)
{
struct lpfc_async_xchg_ctx *axchg =
container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp);
struct lpfc_nvme_lport *lport;
int rc;
if (axchg->phba->pport->load_flag & FC_UNLOADING)
return -ENODEV;
lport = (struct lpfc_nvme_lport *)localport->private;
rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, __lpfc_nvme_xmt_ls_rsp_cmp);
if (rc) {
/*
* unless the failure is due to having already sent
* the response, an abort will be generated for the
* exchange if the rsp can't be sent.
*/
if (rc != -EALREADY)
atomic_inc(&lport->xmt_ls_abort);
return rc;
}
return 0;
}
/**
* lpfc_nvme_ls_abort - Abort a prior NVME LS request
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnvme_lport: Transport localport that LS is to be issued from.
* @pnvme_rport: Transport remoteport that LS is to be sent to.
* @pnvme_lsreq: the transport nvme_ls_req structure for the LS
*
* Driver registers this routine to abort a NVME LS request that is
* in progress (from the transports perspective).
**/
static void
lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport,
struct nvme_fc_remote_port *pnvme_rport,
struct nvmefc_ls_req *pnvme_lsreq)
{
struct lpfc_nvme_lport *lport;
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
int ret;
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
if (unlikely(!lport))
return;
vport = lport->vport;
if (vport->load_flag & FC_UNLOADING)
return;
ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id);
ret = __lpfc_nvme_ls_abort(vport, ndlp, pnvme_lsreq);
if (!ret)
atomic_inc(&lport->xmt_ls_abort);
}
/* Fix up the existing sgls for NVME IO. */
static inline void
lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport,
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd,
struct nvmefc_fcp_req *nCmd)
{
struct lpfc_hba *phba = vport->phba;
struct sli4_sge *sgl;
union lpfc_wqe128 *wqe;
uint32_t *wptr, *dptr;
/*
* Get a local pointer to the built-in wqe and correct
* the cmd size to match NVME's 96 bytes and fix
* the dma address.
*/
wqe = &lpfc_ncmd->cur_iocbq.wqe;
/*
* Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to
* match NVME. NVME sends 96 bytes. Also, use the
* nvme commands command and response dma addresses
* rather than the virtual memory to ease the restore
* operation.
*/
sgl = lpfc_ncmd->dma_sgl;
sgl->sge_len = cpu_to_le32(nCmd->cmdlen);
if (phba->cfg_nvme_embed_cmd) {
sgl->addr_hi = 0;
sgl->addr_lo = 0;
/* Word 0-2 - NVME CMND IU (embedded payload) */
wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED;
wqe->generic.bde.tus.f.bdeSize = 56;
wqe->generic.bde.addrHigh = 0;
wqe->generic.bde.addrLow = 64; /* Word 16 */
/* Word 10 - dbde is 0, wqes is 1 in template */
/*
* Embed the payload in the last half of the WQE
* WQE words 16-30 get the NVME CMD IU payload
*
* WQE words 16-19 get payload Words 1-4
* WQE words 20-21 get payload Words 6-7
* WQE words 22-29 get payload Words 16-23
*/
wptr = &wqe->words[16]; /* WQE ptr */
dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */
dptr++; /* Skip Word 0 in payload */
*wptr++ = *dptr++; /* Word 1 */
*wptr++ = *dptr++; /* Word 2 */
*wptr++ = *dptr++; /* Word 3 */
*wptr++ = *dptr++; /* Word 4 */
dptr++; /* Skip Word 5 in payload */
*wptr++ = *dptr++; /* Word 6 */
*wptr++ = *dptr++; /* Word 7 */
dptr += 8; /* Skip Words 8-15 in payload */
*wptr++ = *dptr++; /* Word 16 */
*wptr++ = *dptr++; /* Word 17 */
*wptr++ = *dptr++; /* Word 18 */
*wptr++ = *dptr++; /* Word 19 */
*wptr++ = *dptr++; /* Word 20 */
*wptr++ = *dptr++; /* Word 21 */
*wptr++ = *dptr++; /* Word 22 */
*wptr = *dptr; /* Word 23 */
} else {
sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma));
sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma));
/* Word 0-2 - NVME CMND IU Inline BDE */
wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen;
wqe->generic.bde.addrHigh = sgl->addr_hi;
wqe->generic.bde.addrLow = sgl->addr_lo;
/* Word 10 */
bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
}
sgl++;
/* Setup the physical region for the FCP RSP */
sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma));
sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma));
sgl->word2 = le32_to_cpu(sgl->word2);
if (nCmd->sg_cnt)
bf_set(lpfc_sli4_sge_last, sgl, 0);
else
bf_set(lpfc_sli4_sge_last, sgl, 1);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(nCmd->rsplen);
}
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
/*
* lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO
*
* Driver registers this routine as it io request handler. This
* routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
* data structure to the rport indicated in @lpfc_nvme_rport.
*
* Return value :
* 0 - Success
* TODO: What are the failure codes.
**/
static void
lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
struct lpfc_wcqe_complete *wcqe)
{
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd =
(struct lpfc_io_buf *)pwqeIn->context1;
struct lpfc_vport *vport = pwqeIn->vport;
struct nvmefc_fcp_req *nCmd;
struct nvme_fc_ersp_iu *ep;
struct nvme_fc_cmd_iu *cp;
struct lpfc_nodelist *ndlp;
struct lpfc_nvme_fcpreq_priv *freqpriv;
struct lpfc_nvme_lport *lport;
uint32_t code, status, idx;
uint16_t cid, sqhd, data;
uint32_t *ptr;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
int cpu;
#endif
/* Sanity check on return of outstanding command */
if (!lpfc_ncmd) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6071 Null lpfc_ncmd pointer. No "
"release, skip completion\n");
return;
}
/* Guard against abort handler being called at same time */
spin_lock(&lpfc_ncmd->buf_lock);
if (!lpfc_ncmd->nvmeCmd) {
spin_unlock(&lpfc_ncmd->buf_lock);
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6066 Missing cmpl ptrs: lpfc_ncmd x%px, "
"nvmeCmd x%px\n",
lpfc_ncmd, lpfc_ncmd->nvmeCmd);
/* Release the lpfc_ncmd regardless of the missing elements. */
lpfc_release_nvme_buf(phba, lpfc_ncmd);
return;
}
nCmd = lpfc_ncmd->nvmeCmd;
status = bf_get(lpfc_wcqe_c_status, wcqe);
idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++;
if (unlikely(status && vport->localport)) {
lport = (struct lpfc_nvme_lport *)vport->localport->private;
if (lport) {
if (bf_get(lpfc_wcqe_c_xb, wcqe))
atomic_inc(&lport->cmpl_fcp_xb);
atomic_inc(&lport->cmpl_fcp_err);
}
}
lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n",
lpfc_ncmd->cur_iocbq.sli4_xritag,
status, wcqe->parameter);
/*
* Catch race where our node has transitioned, but the
* transport is still transitioning.
*/
ndlp = lpfc_ncmd->ndlp;
scsi: lpfc: Rework remote port ref counting and node freeing When a remote port is disconnected and disappears, its node structure (ndlp) stays allocated and on a vport node list. While on the list it can be matched, thus requires validation checks on state to be added in numerous code paths. If the node comes back, its possible for there to be multiple node structures for the same device on the vport node list. There is no reason to keep the node structure around after it is no longer in existence, and the current implementation creates problems for itself (multiple nodes) and lots of unnecessary code for state validation. Additionally, the reference taking on the node structure didn't follow the normal model used by the kernel kref api. It included lots of odd logic to match state with reference count. The combination of this odd logic plus the way it was implicitly used in the discovery engine made its reference taking implementation suspect and extremely hard to follow. Change the driver such that the reference taking routines are now normal ref increments/decrements and callout on refcount=0. With this in place, the rework can be done such that the node structure is fully removed and deallocated when the remote port no longer exists and all references are removed. This removal logic, and the basic ref counting are intrically tied, thus in a single patch. Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:30 +08:00
if (!ndlp) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6062 Ignoring NVME cmpl. No ndlp\n");
goto out_err;
}
code = bf_get(lpfc_wcqe_c_code, wcqe);
if (code == CQE_CODE_NVME_ERSP) {
/* For this type of CQE, we need to rebuild the rsp */
ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr;
/*
* Get Command Id from cmd to plug into response. This
* code is not needed in the next NVME Transport drop.
*/
cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr;
cid = cp->sqe.common.command_id;
/*
* RSN is in CQE word 2
* SQHD is in CQE Word 3 bits 15:0
* Cmd Specific info is in CQE Word 1
* and in CQE Word 0 bits 15:0
*/
sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe);
/* Now lets build the NVME ERSP IU */
ep->iu_len = cpu_to_be16(8);
ep->rsn = wcqe->parameter;
ep->xfrd_len = cpu_to_be32(nCmd->payload_length);
ep->rsvd12 = 0;
ptr = (uint32_t *)&ep->cqe.result.u64;
*ptr++ = wcqe->total_data_placed;
data = bf_get(lpfc_wcqe_c_ersp0, wcqe);
*ptr = (uint32_t)data;
ep->cqe.sq_head = sqhd;
ep->cqe.sq_id = nCmd->sqid;
ep->cqe.command_id = cid;
ep->cqe.status = 0;
lpfc_ncmd->status = IOSTAT_SUCCESS;
lpfc_ncmd->result = 0;
nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN;
nCmd->transferred_length = nCmd->payload_length;
} else {
lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK);
lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
/* For NVME, the only failure path that results in an
* IO error is when the adapter rejects it. All other
* conditions are a success case and resolved by the
* transport.
* IOSTAT_FCP_RSP_ERROR means:
* 1. Length of data received doesn't match total
* transfer length in WQE
* 2. If the RSP payload does NOT match these cases:
* a. RSP length 12/24 bytes and all zeros
* b. NVME ERSP
*/
switch (lpfc_ncmd->status) {
case IOSTAT_SUCCESS:
nCmd->transferred_length = wcqe->total_data_placed;
nCmd->rcv_rsplen = 0;
nCmd->status = 0;
break;
case IOSTAT_FCP_RSP_ERROR:
nCmd->transferred_length = wcqe->total_data_placed;
nCmd->rcv_rsplen = wcqe->parameter;
nCmd->status = 0;
/* Sanity check */
if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN)
break;
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6081 NVME Completion Protocol Error: "
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
"xri %x status x%x result x%x "
"placed x%x\n",
lpfc_ncmd->cur_iocbq.sli4_xritag,
lpfc_ncmd->status, lpfc_ncmd->result,
wcqe->total_data_placed);
break;
case IOSTAT_LOCAL_REJECT:
/* Let fall through to set command final state. */
if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED)
lpfc_printf_vlog(vport, KERN_INFO,
LOG_NVME_IOERR,
"6032 Delay Aborted cmd x%px "
"nvme cmd x%px, xri x%x, "
"xb %d\n",
lpfc_ncmd, nCmd,
lpfc_ncmd->cur_iocbq.sli4_xritag,
bf_get(lpfc_wcqe_c_xb, wcqe));
fallthrough;
default:
out_err:
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
"6072 NVME Completion Error: xri %x "
"status x%x result x%x [x%x] "
"placed x%x\n",
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
lpfc_ncmd->cur_iocbq.sli4_xritag,
lpfc_ncmd->status, lpfc_ncmd->result,
wcqe->parameter,
wcqe->total_data_placed);
nCmd->transferred_length = 0;
nCmd->rcv_rsplen = 0;
nCmd->status = NVME_SC_INTERNAL;
}
}
/* pick up SLI4 exhange busy condition */
if (bf_get(lpfc_wcqe_c_xb, wcqe))
lpfc_ncmd->flags |= LPFC_SBUF_XBUSY;
else
lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY;
/* Update stats and complete the IO. There is
* no need for dma unprep because the nvme_transport
* owns the dma address.
*/
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (lpfc_ncmd->ts_cmd_start) {
lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp;
lpfc_ncmd->ts_data_io = ktime_get_ns();
phba->ktime_last_cmd = lpfc_ncmd->ts_data_io;
lpfc_io_ktime(phba, lpfc_ncmd);
}
if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) {
cpu = raw_smp_processor_id();
this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
if (lpfc_ncmd->cpu != cpu)
lpfc_printf_vlog(vport,
KERN_INFO, LOG_NVME_IOERR,
"6701 CPU Check cmpl: "
"cpu %d expect %d\n",
cpu, lpfc_ncmd->cpu);
}
#endif
/* NVME targets need completion held off until the abort exchange
* completes unless the NVME Rport is getting unregistered.
*/
if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) {
freqpriv = nCmd->private;
freqpriv->nvme_buf = NULL;
lpfc_ncmd->nvmeCmd = NULL;
spin_unlock(&lpfc_ncmd->buf_lock);
nCmd->done(nCmd);
} else
spin_unlock(&lpfc_ncmd->buf_lock);
/* Call release with XB=1 to queue the IO into the abort list. */
lpfc_release_nvme_buf(phba, lpfc_ncmd);
}
/**
* lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @vport: pointer to a host virtual N_Port data structure
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @lpfc_ncmd: Pointer to lpfc scsi command
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @pnode: pointer to a node-list data structure
* @cstat: pointer to the control status structure
*
* Driver registers this routine as it io request handler. This
* routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
* data structure to the rport indicated in @lpfc_nvme_rport.
*
* Return value :
* 0 - Success
* TODO: What are the failure codes.
**/
static int
lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd,
struct lpfc_nodelist *pnode,
struct lpfc_fc4_ctrl_stat *cstat)
{
struct lpfc_hba *phba = vport->phba;
struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
union lpfc_wqe128 *wqe = &pwqeq->wqe;
uint32_t req_len;
/*
* There are three possibilities here - use scatter-gather segment, use
* the single mapping, or neither.
*/
if (nCmd->sg_cnt) {
if (nCmd->io_dir == NVMEFC_FCP_WRITE) {
/* From the iwrite template, initialize words 7 - 11 */
memcpy(&wqe->words[7],
&lpfc_iwrite_cmd_template.words[7],
sizeof(uint32_t) * 5);
/* Word 4 */
wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length;
/* Word 5 */
if ((phba->cfg_nvme_enable_fb) &&
(pnode->nlp_flag & NLP_FIRSTBURST)) {
req_len = lpfc_ncmd->nvmeCmd->payload_length;
if (req_len < pnode->nvme_fb_size)
wqe->fcp_iwrite.initial_xfer_len =
req_len;
else
wqe->fcp_iwrite.initial_xfer_len =
pnode->nvme_fb_size;
} else {
wqe->fcp_iwrite.initial_xfer_len = 0;
}
cstat->output_requests++;
} else {
/* From the iread template, initialize words 7 - 11 */
memcpy(&wqe->words[7],
&lpfc_iread_cmd_template.words[7],
sizeof(uint32_t) * 5);
/* Word 4 */
wqe->fcp_iread.total_xfer_len = nCmd->payload_length;
/* Word 5 */
wqe->fcp_iread.rsrvd5 = 0;
cstat->input_requests++;
}
} else {
/* From the icmnd template, initialize words 4 - 11 */
memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4],
sizeof(uint32_t) * 8);
cstat->control_requests++;
}
if (pnode->nlp_nvme_info & NLP_NVME_NSLER)
bf_set(wqe_erp, &wqe->generic.wqe_com, 1);
/*
* Finish initializing those WQE fields that are independent
* of the nvme_cmnd request_buffer
*/
/* Word 3 */
bf_set(payload_offset_len, &wqe->fcp_icmd,
(nCmd->rsplen + nCmd->cmdlen));
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
phba->sli4_hba.rpi_ids[pnode->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag);
/* Word 8 */
wqe->generic.wqe_com.abort_tag = pwqeq->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag);
/* Word 10 */
bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG);
/* Words 13 14 15 are for PBDE support */
pwqeq->vport = vport;
return 0;
}
/**
* lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO
scsi: lpfc: Correct some pretty obvious misdocumentation Either due to API slippage before the driver was mainlined or copy/paste errors. Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Function parameter or member 'qsize' not described in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:254: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:311: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_delete_queue' drivers/scsi/lpfc/lpfc_nvme.c:689: warning: Function parameter or member 'gen_req_cmp' not described in '__lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:801: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Function parameter or member 'pnvme_lsreq' not described in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:937: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_ls_abort' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'phba' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'pwqeIn' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Function parameter or member 'wcqe' not described in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1075: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_io_cmd_wqe_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'pnode' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Function parameter or member 'cstat' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1313: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1420: warning: Excess function parameter 'hw_queue_handle' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1598: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1609: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1856: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1892: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2093: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2197: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2330: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2543: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20200713080001.128044-21-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-13 15:59:57 +08:00
* @vport: pointer to a host virtual N_Port data structure
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @lpfc_ncmd: Pointer to lpfc scsi command
*
* Driver registers this routine as it io request handler. This
* routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
* data structure to the rport indicated in @lpfc_nvme_rport.
*
* Return value :
* 0 - Success
* TODO: What are the failure codes.
**/
static int
lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd)
{
struct lpfc_hba *phba = vport->phba;
struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe;
struct sli4_sge *sgl = lpfc_ncmd->dma_sgl;
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
struct sli4_hybrid_sgl *sgl_xtra = NULL;
struct scatterlist *data_sg;
struct sli4_sge *first_data_sgl;
struct ulp_bde64 *bde;
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
dma_addr_t physaddr = 0;
uint32_t num_bde = 0;
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
uint32_t dma_len = 0;
uint32_t dma_offset = 0;
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
int nseg, i, j;
bool lsp_just_set = false;
/* Fix up the command and response DMA stuff. */
lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd);
/*
* There are three possibilities here - use scatter-gather segment, use
* the single mapping, or neither.
*/
if (nCmd->sg_cnt) {
/*
* Jump over the cmd and rsp SGEs. The fix routine
* has already adjusted for this.
*/
sgl += 2;
first_data_sgl = sgl;
lpfc_ncmd->seg_cnt = nCmd->sg_cnt;
if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"6058 Too many sg segments from "
"NVME Transport. Max %d, "
"nvmeIO sg_cnt %d\n",
phba->cfg_nvme_seg_cnt + 1,
lpfc_ncmd->seg_cnt);
lpfc_ncmd->seg_cnt = 0;
return 1;
}
/*
* The driver established a maximum scatter-gather segment count
* during probe that limits the number of sg elements in any
* single nvme command. Just run through the seg_cnt and format
* the sge's.
*/
nseg = nCmd->sg_cnt;
data_sg = nCmd->first_sgl;
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
/* for tracking the segment boundaries */
j = 2;
for (i = 0; i < nseg; i++) {
if (data_sg == NULL) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"6059 dptr err %d, nseg %d\n",
i, nseg);
lpfc_ncmd->seg_cnt = 0;
return 1;
}
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
sgl->word2 = 0;
if ((num_bde + 1) == nseg) {
bf_set(lpfc_sli4_sge_last, sgl, 1);
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
bf_set(lpfc_sli4_sge_type, sgl,
LPFC_SGE_TYPE_DATA);
} else {
bf_set(lpfc_sli4_sge_last, sgl, 0);
scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI to contain the exchanges Scatter/Gather List. This caps the number of SGL elements that can be in the SGL. There are not extensions to extend the list out of the 2 pages. The G7 hardware adds a SGE type that allows the SGL to be vectored to a different scatter/gather list segment. And that segment can contain a SGE to go to another segment and so on. The initial segment must still be pre-registered for the XRI, but it can be a much smaller amount (256Bytes) as it can now be dynamically grown. This much smaller allocation can handle the SG list for most normal I/O, and the dynamic aspect allows it to support many MB's if needed. The implementation creates a pool which contains "segments" and which is initially sized to hold the initial small segment per xri. If an I/O requires additional segments, they are allocated from the pool. If the pool has no more segments, the pool is grown based on what is now needed. After the I/O completes, the additional segments are returned to the pool for use by other I/Os. Once allocated, the additional segments are not released under the assumption of "if needed once, it will be needed again". Pools are kept on a per-hardware queue basis, which is typically 1:1 per cpu, but may be shared by multiple cpus. The switch to the smaller initial allocation significantly reduces the memory footprint of the driver (which only grows if large ios are issued). Based on the several K of XRIs for the adapter, the 8KB->256B reduction can conserve 32MBs or more. It has been observed with per-cpu resource pools that allocating a resource on CPU A, may be put back on CPU B. While the get routines are distributed evenly, only a limited subset of CPUs may be handling the put routines. This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because all the resources are being put on a limited subset of CPUs. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:57:09 +08:00
/* expand the segment */
if (!lsp_just_set &&
!((j + 1) % phba->border_sge_num) &&
((nseg - 1) != i)) {
/* set LSP type */
bf_set(lpfc_sli4_sge_type, sgl,
LPFC_SGE_TYPE_LSP);
sgl_xtra = lpfc_get_sgl_per_hdwq(
phba, lpfc_ncmd);
if (unlikely(!sgl_xtra)) {
lpfc_ncmd->seg_cnt = 0;
return 1;
}
sgl->addr_lo = cpu_to_le32(putPaddrLow(
sgl_xtra->dma_phys_sgl));
sgl->addr_hi = cpu_to_le32(putPaddrHigh(
sgl_xtra->dma_phys_sgl));
} else {
bf_set(lpfc_sli4_sge_type, sgl,
LPFC_SGE_TYPE_DATA);
}
}
if (!(bf_get(lpfc_sli4_sge_type, sgl) &
LPFC_SGE_TYPE_LSP)) {
if ((nseg - 1) == i)
bf_set(lpfc_sli4_sge_last, sgl, 1);
physaddr = data_sg->dma_address;
dma_len = data_sg->length;
sgl->addr_lo = cpu_to_le32(
putPaddrLow(physaddr));
sgl->addr_hi = cpu_to_le32(
putPaddrHigh(physaddr));
bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(dma_len);
dma_offset += dma_len;
data_sg = sg_next(data_sg);
sgl++;
lsp_just_set = false;
} else {
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(
phba->cfg_sg_dma_buf_size);
sgl = (struct sli4_sge *)sgl_xtra->dma_sgl;
i = i - 1;
lsp_just_set = true;
}
j++;
}
if (phba->cfg_enable_pbde) {
/* Use PBDE support for first SGL only, offset == 0 */
/* Words 13-15 */
bde = (struct ulp_bde64 *)
&wqe->words[13];
bde->addrLow = first_data_sgl->addr_lo;
bde->addrHigh = first_data_sgl->addr_hi;
bde->tus.f.bdeSize =
le32_to_cpu(first_data_sgl->sge_len);
bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
bde->tus.w = cpu_to_le32(bde->tus.w);
/* Word 11 */
bf_set(wqe_pbde, &wqe->generic.wqe_com, 1);
} else {
memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
bf_set(wqe_pbde, &wqe->generic.wqe_com, 0);
}
} else {
lpfc_ncmd->seg_cnt = 0;
/* For this clause to be valid, the payload_length
* and sg_cnt must zero.
*/
if (nCmd->payload_length != 0) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"6063 NVME DMA Prep Err: sg_cnt %d "
"payload_length x%x\n",
nCmd->sg_cnt, nCmd->payload_length);
return 1;
}
}
return 0;
}
/**
* lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @pnvme_lport: Pointer to the driver's local port data
* @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
* @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @pnvme_fcreq: IO request from nvme fc to driver.
*
* Driver registers this routine as it io request handler. This
* routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* data structure to the rport indicated in @lpfc_nvme_rport.
*
* Return value :
* 0 - Success
* TODO: What are the failure codes.
**/
static int
lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport,
struct nvme_fc_remote_port *pnvme_rport,
void *hw_queue_handle,
struct nvmefc_fcp_req *pnvme_fcreq)
{
int ret = 0;
int expedite = 0;
int idx, cpu;
struct lpfc_nvme_lport *lport;
struct lpfc_fc4_ctrl_stat *cstat;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
struct lpfc_nodelist *ndlp;
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd;
struct lpfc_nvme_rport *rport;
struct lpfc_nvme_qhandle *lpfc_queue_info;
struct lpfc_nvme_fcpreq_priv *freqpriv;
struct nvme_common_command *sqe;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
uint64_t start = 0;
#endif
/* Validate pointers. LLDD fault handling with transport does
* have timing races.
*/
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
if (unlikely(!lport)) {
ret = -EINVAL;
goto out_fail;
}
vport = lport->vport;
if (unlikely(!hw_queue_handle)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6117 Fail IO, NULL hw_queue_handle\n");
atomic_inc(&lport->xmt_fcp_err);
ret = -EBUSY;
goto out_fail;
}
phba = vport->phba;
if (unlikely(vport->load_flag & FC_UNLOADING)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6124 Fail IO, Driver unload\n");
atomic_inc(&lport->xmt_fcp_err);
ret = -ENODEV;
goto out_fail;
}
freqpriv = pnvme_fcreq->private;
if (unlikely(!freqpriv)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6158 Fail IO, NULL request data\n");
atomic_inc(&lport->xmt_fcp_err);
ret = -EINVAL;
goto out_fail;
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on)
start = ktime_get_ns();
#endif
rport = (struct lpfc_nvme_rport *)pnvme_rport->private;
lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle;
/*
* Catch race where our node has transitioned, but the
* transport is still transitioning.
*/
ndlp = rport->ndlp;
scsi: lpfc: Rework remote port ref counting and node freeing When a remote port is disconnected and disappears, its node structure (ndlp) stays allocated and on a vport node list. While on the list it can be matched, thus requires validation checks on state to be added in numerous code paths. If the node comes back, its possible for there to be multiple node structures for the same device on the vport node list. There is no reason to keep the node structure around after it is no longer in existence, and the current implementation creates problems for itself (multiple nodes) and lots of unnecessary code for state validation. Additionally, the reference taking on the node structure didn't follow the normal model used by the kernel kref api. It included lots of odd logic to match state with reference count. The combination of this odd logic plus the way it was implicitly used in the discovery engine made its reference taking implementation suspect and extremely hard to follow. Change the driver such that the reference taking routines are now normal ref increments/decrements and callout on refcount=0. With this in place, the rework can be done such that the node structure is fully removed and deallocated when the remote port no longer exists and all references are removed. This removal logic, and the basic ref counting are intrically tied, thus in a single patch. Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:30 +08:00
if (!ndlp) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
"6053 Busy IO, ndlp not ready: rport x%px "
"ndlp x%px, DID x%06x\n",
rport, ndlp, pnvme_rport->port_id);
atomic_inc(&lport->xmt_fcp_err);
ret = -EBUSY;
goto out_fail;
}
/* The remote node has to be a mapped target or it's an error. */
if ((ndlp->nlp_type & NLP_NVME_TARGET) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR,
"6036 Fail IO, DID x%06x not ready for "
"IO. State x%x, Type x%x Flg x%x\n",
pnvme_rport->port_id,
ndlp->nlp_state, ndlp->nlp_type,
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
ndlp->fc4_xpt_flags);
atomic_inc(&lport->xmt_fcp_bad_ndlp);
ret = -EBUSY;
goto out_fail;
}
/* Currently only NVME Keep alive commands should be expedited
* if the driver runs out of a resource. These should only be
* issued on the admin queue, qidx 0
*/
if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) {
sqe = &((struct nvme_fc_cmd_iu *)
pnvme_fcreq->cmdaddr)->sqe.common;
if (sqe->opcode == nvme_admin_keep_alive)
expedite = 1;
}
/* The node is shared with FCP IO, make sure the IO pending count does
* not exceed the programmed depth.
*/
if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) &&
!expedite) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6174 Fail IO, ndlp qdepth exceeded: "
"idx %d DID %x pend %d qdepth %d\n",
lpfc_queue_info->index, ndlp->nlp_DID,
atomic_read(&ndlp->cmd_pending),
ndlp->cmd_qdepth);
atomic_inc(&lport->xmt_fcp_qdepth);
ret = -EBUSY;
goto out_fail;
}
}
/* Lookup Hardware Queue index based on fcp_io_sched module parameter */
if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) {
idx = lpfc_queue_info->index;
} else {
cpu = raw_smp_processor_id();
idx = phba->sli4_hba.cpu_map[cpu].hdwq;
}
lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite);
if (lpfc_ncmd == NULL) {
atomic_inc(&lport->xmt_fcp_noxri);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6065 Fail IO, driver buffer pool is empty: "
"idx %d DID %x\n",
lpfc_queue_info->index, ndlp->nlp_DID);
ret = -EBUSY;
goto out_fail;
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (start) {
lpfc_ncmd->ts_cmd_start = start;
lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd;
} else {
lpfc_ncmd->ts_cmd_start = 0;
}
#endif
/*
* Store the data needed by the driver to issue, abort, and complete
* an IO.
* Do not let the IO hang out forever. There is no midlayer issuing
* an abort so inform the FW of the maximum IO pending time.
*/
freqpriv->nvme_buf = lpfc_ncmd;
lpfc_ncmd->nvmeCmd = pnvme_fcreq;
lpfc_ncmd->ndlp = ndlp;
lpfc_ncmd->qidx = lpfc_queue_info->qidx;
/*
* Issue the IO on the WQ indicated by index in the hw_queue_handle.
* This identfier was create in our hardware queue create callback
* routine. The driver now is dependent on the IO queue steering from
* the transport. We are trusting the upper NVME layers know which
* index to use and that they have affinitized a CPU to this hardware
* queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ.
*/
lpfc_ncmd->cur_iocbq.hba_wqidx = idx;
cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat;
lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat);
ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd);
if (ret) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6175 Fail IO, Prep DMA: "
"idx %d DID %x\n",
lpfc_queue_info->index, ndlp->nlp_DID);
atomic_inc(&lport->xmt_fcp_err);
ret = -ENOMEM;
goto out_free_nvme_buf;
}
lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n",
lpfc_ncmd->cur_iocbq.sli4_xritag,
lpfc_queue_info->index, ndlp->nlp_DID);
ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq);
if (ret) {
atomic_inc(&lport->xmt_fcp_wqerr);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6113 Fail IO, Could not issue WQE err %x "
"sid: x%x did: x%x oxid: x%x\n",
ret, vport->fc_myDID, ndlp->nlp_DID,
lpfc_ncmd->cur_iocbq.sli4_xritag);
goto out_free_nvme_buf;
}
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
if (phba->cfg_xri_rebalancing)
lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (lpfc_ncmd->ts_cmd_start)
lpfc_ncmd->ts_cmd_wqput = ktime_get_ns();
if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) {
cpu = raw_smp_processor_id();
this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
lpfc_ncmd->cpu = cpu;
if (idx != cpu)
lpfc_printf_vlog(vport,
KERN_INFO, LOG_NVME_IOERR,
"6702 CPU Check cmd: "
"cpu %d wq %d\n",
lpfc_ncmd->cpu,
lpfc_queue_info->index);
}
#endif
return 0;
out_free_nvme_buf:
if (lpfc_ncmd->nvmeCmd->sg_cnt) {
if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE)
cstat->output_requests--;
else
cstat->input_requests--;
} else
cstat->control_requests--;
lpfc_release_nvme_buf(phba, lpfc_ncmd);
out_fail:
return ret;
}
/**
* lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request.
* @phba: Pointer to HBA context object
* @cmdiocb: Pointer to command iocb object.
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @abts_cmpl: Pointer to wcqe complete object.
*
* This is the callback function for any NVME FCP IO that was aborted.
*
* Return value:
* None
**/
void
lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_wcqe_complete *abts_cmpl)
{
lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
"6145 ABORT_XRI_CN completing on rpi x%x "
"original iotag x%x, abort cmd iotag x%x "
"req_tag x%x, status x%x, hwstatus x%x\n",
cmdiocb->iocb.un.acxri.abortContextTag,
cmdiocb->iocb.un.acxri.abortIoTag,
cmdiocb->iotag,
bf_get(lpfc_wcqe_c_request_tag, abts_cmpl),
bf_get(lpfc_wcqe_c_status, abts_cmpl),
bf_get(lpfc_wcqe_c_hw_status, abts_cmpl));
lpfc_sli_release_iocbq(phba, cmdiocb);
}
/**
* lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @pnvme_lport: Pointer to the driver's local port data
* @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq
* @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @pnvme_fcreq: IO request from nvme fc to driver.
*
* Driver registers this routine as its nvme request io abort handler. This
* routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq
* data structure to the rport indicated in @lpfc_nvme_rport. This routine
* is executed asynchronously - one the target is validated as "MAPPED" and
* ready for IO, the driver issues the abort request and returns.
*
* Return value:
* None
**/
static void
lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport,
struct nvme_fc_remote_port *pnvme_rport,
void *hw_queue_handle,
struct nvmefc_fcp_req *pnvme_fcreq)
{
struct lpfc_nvme_lport *lport;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_nbuf;
struct lpfc_iocbq *nvmereq_wqe;
struct lpfc_nvme_fcpreq_priv *freqpriv;
unsigned long flags;
int ret_val;
/* Validate pointers. LLDD fault handling with transport does
* have timing races.
*/
lport = (struct lpfc_nvme_lport *)pnvme_lport->private;
if (unlikely(!lport))
return;
vport = lport->vport;
if (unlikely(!hw_queue_handle)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
"6129 Fail Abort, HW Queue Handle NULL.\n");
return;
}
phba = vport->phba;
freqpriv = pnvme_fcreq->private;
if (unlikely(!freqpriv))
return;
if (vport->load_flag & FC_UNLOADING)
return;
/* Announce entry to new IO submit field. */
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
"6002 Abort Request to rport DID x%06x "
"for nvme_fc_req x%px\n",
pnvme_rport->port_id,
pnvme_fcreq);
/* If the hba is getting reset, this flag is set. It is
* cleared when the reset is complete and rings reestablished.
*/
spin_lock_irqsave(&phba->hbalock, flags);
/* driver queued commands are in process of being flushed */
if (phba->hba_flag & HBA_IOQ_FLUSH) {
spin_unlock_irqrestore(&phba->hbalock, flags);
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6139 Driver in reset cleanup - flushing "
"NVME Req now. hba_flag x%x\n",
phba->hba_flag);
return;
}
lpfc_nbuf = freqpriv->nvme_buf;
if (!lpfc_nbuf) {
spin_unlock_irqrestore(&phba->hbalock, flags);
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6140 NVME IO req has no matching lpfc nvme "
"io buffer. Skipping abort req.\n");
return;
} else if (!lpfc_nbuf->nvmeCmd) {
spin_unlock_irqrestore(&phba->hbalock, flags);
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6141 lpfc NVME IO req has no nvme_fcreq "
"io buffer. Skipping abort req.\n");
return;
}
nvmereq_wqe = &lpfc_nbuf->cur_iocbq;
/* Guard against IO completion being called at same time */
spin_lock(&lpfc_nbuf->buf_lock);
/*
* The lpfc_nbuf and the mapped nvme_fcreq in the driver's
* state must match the nvme_fcreq passed by the nvme
* transport. If they don't match, it is likely the driver
* has already completed the NVME IO and the nvme transport
* has not seen it yet.
*/
if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6143 NVME req mismatch: "
"lpfc_nbuf x%px nvmeCmd x%px, "
"pnvme_fcreq x%px. Skipping Abort xri x%x\n",
lpfc_nbuf, lpfc_nbuf->nvmeCmd,
pnvme_fcreq, nvmereq_wqe->sli4_xritag);
goto out_unlock;
}
/* Don't abort IOs no longer on the pending queue. */
if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6142 NVME IO req x%px not queued - skipping "
"abort req xri x%x\n",
pnvme_fcreq, nvmereq_wqe->sli4_xritag);
goto out_unlock;
}
atomic_inc(&lport->xmt_fcp_abort);
lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n",
nvmereq_wqe->sli4_xritag,
nvmereq_wqe->hba_wqidx, pnvme_rport->port_id);
/* Outstanding abort is in progress */
if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6144 Outstanding NVME I/O Abort Request "
"still pending on nvme_fcreq x%px, "
"lpfc_ncmd %px xri x%x\n",
pnvme_fcreq, lpfc_nbuf,
nvmereq_wqe->sli4_xritag);
goto out_unlock;
}
scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers This patch reworks the abort interfaces such that SLI-3 retains the iocb-based formatting and completions and SLI-4 now uses native WQEs and completion routines. The following changes are made: - The code is refactored from a confusing 2 routine sequence of xx_abort_iotag_issue(), which creates/formats and abort cmd, and xx_issue_abort_tag(), which then issues and handles the completion of the abort cmd - into a single interface of xx_issue_abort_iotag(). The new interface will determine whether SLI-3 or SLI-4 and then call the appropriate handler. A completion handler can now be specified to address the differences in completion handling. Note: original code is all iocb based, with SLI-4 converting to SLI-3 for the SCSI/ELS path, and NVMe natively using wqes. - The SLI-3 side is refactored: The older iocb-base lpfc_sli_issue_abort_iotag() routine is combined with the logic of lpfc_sli_abort_iotag_issue() as well as the iocb-specific code in lpfc_abort_handler() and lpfc_sli_abort_iocb() to create the new single SLI-3 abort routine that formats and issues the iocb. - The SLI-4 side is refactored and added to: The native WQE abort code in NVMe is moved to the new SLI-4 issue_abort_iotag() routine. Items in SCSI that set fields not set by NVMe is migrated into the new routine. Thus the routine supports NVMe and SCSI initiators. The nvmet block (target) formats the abort slightly different (like the old NVMe initiator) thus it has its own prep routine stolen from NVMe initiator and it retains the current code it has for issuing the WQE (does not use the commonized routine the initiators do). SLI-4 completion handlers were also added. - lpfc_abort_handler now becomes a wrapper that determines whether SLI-3 or SLI-4 and calls the proper abort handler. Link: https://lore.kernel.org/r/20201115192646.12977-16-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:44 +08:00
ret_val = lpfc_sli4_issue_abort_iotag(phba, nvmereq_wqe,
lpfc_nvme_abort_fcreq_cmpl);
spin_unlock(&lpfc_nbuf->buf_lock);
spin_unlock_irqrestore(&phba->hbalock, flags);
scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers This patch reworks the abort interfaces such that SLI-3 retains the iocb-based formatting and completions and SLI-4 now uses native WQEs and completion routines. The following changes are made: - The code is refactored from a confusing 2 routine sequence of xx_abort_iotag_issue(), which creates/formats and abort cmd, and xx_issue_abort_tag(), which then issues and handles the completion of the abort cmd - into a single interface of xx_issue_abort_iotag(). The new interface will determine whether SLI-3 or SLI-4 and then call the appropriate handler. A completion handler can now be specified to address the differences in completion handling. Note: original code is all iocb based, with SLI-4 converting to SLI-3 for the SCSI/ELS path, and NVMe natively using wqes. - The SLI-3 side is refactored: The older iocb-base lpfc_sli_issue_abort_iotag() routine is combined with the logic of lpfc_sli_abort_iotag_issue() as well as the iocb-specific code in lpfc_abort_handler() and lpfc_sli_abort_iocb() to create the new single SLI-3 abort routine that formats and issues the iocb. - The SLI-4 side is refactored and added to: The native WQE abort code in NVMe is moved to the new SLI-4 issue_abort_iotag() routine. Items in SCSI that set fields not set by NVMe is migrated into the new routine. Thus the routine supports NVMe and SCSI initiators. The nvmet block (target) formats the abort slightly different (like the old NVMe initiator) thus it has its own prep routine stolen from NVMe initiator and it retains the current code it has for issuing the WQE (does not use the commonized routine the initiators do). SLI-4 completion handlers were also added. - lpfc_abort_handler now becomes a wrapper that determines whether SLI-3 or SLI-4 and calls the proper abort handler. Link: https://lore.kernel.org/r/20201115192646.12977-16-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:44 +08:00
if (ret_val != WQE_SUCCESS) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6137 Failed abts issue_wqe with status x%x "
"for nvme_fcreq x%px.\n",
ret_val, pnvme_fcreq);
return;
}
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS,
"6138 Transport Abort NVME Request Issued for "
scsi: lpfc: Convert abort handling to SLI-3 and SLI-4 handlers This patch reworks the abort interfaces such that SLI-3 retains the iocb-based formatting and completions and SLI-4 now uses native WQEs and completion routines. The following changes are made: - The code is refactored from a confusing 2 routine sequence of xx_abort_iotag_issue(), which creates/formats and abort cmd, and xx_issue_abort_tag(), which then issues and handles the completion of the abort cmd - into a single interface of xx_issue_abort_iotag(). The new interface will determine whether SLI-3 or SLI-4 and then call the appropriate handler. A completion handler can now be specified to address the differences in completion handling. Note: original code is all iocb based, with SLI-4 converting to SLI-3 for the SCSI/ELS path, and NVMe natively using wqes. - The SLI-3 side is refactored: The older iocb-base lpfc_sli_issue_abort_iotag() routine is combined with the logic of lpfc_sli_abort_iotag_issue() as well as the iocb-specific code in lpfc_abort_handler() and lpfc_sli_abort_iocb() to create the new single SLI-3 abort routine that formats and issues the iocb. - The SLI-4 side is refactored and added to: The native WQE abort code in NVMe is moved to the new SLI-4 issue_abort_iotag() routine. Items in SCSI that set fields not set by NVMe is migrated into the new routine. Thus the routine supports NVMe and SCSI initiators. The nvmet block (target) formats the abort slightly different (like the old NVMe initiator) thus it has its own prep routine stolen from NVMe initiator and it retains the current code it has for issuing the WQE (does not use the commonized routine the initiators do). SLI-4 completion handlers were also added. - lpfc_abort_handler now becomes a wrapper that determines whether SLI-3 or SLI-4 and calls the proper abort handler. Link: https://lore.kernel.org/r/20201115192646.12977-16-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:44 +08:00
"ox_id x%x\n",
nvmereq_wqe->sli4_xritag);
return;
out_unlock:
spin_unlock(&lpfc_nbuf->buf_lock);
spin_unlock_irqrestore(&phba->hbalock, flags);
return;
}
/* Declare and initialization an instance of the FC NVME template. */
static struct nvme_fc_port_template lpfc_nvme_template = {
/* initiator-based functions */
.localport_delete = lpfc_nvme_localport_delete,
.remoteport_delete = lpfc_nvme_remoteport_delete,
.create_queue = lpfc_nvme_create_queue,
.delete_queue = lpfc_nvme_delete_queue,
.ls_req = lpfc_nvme_ls_req,
.fcp_io = lpfc_nvme_fcp_io_submit,
.ls_abort = lpfc_nvme_ls_abort,
.fcp_abort = lpfc_nvme_fcp_abort,
.xmt_ls_rsp = lpfc_nvme_xmt_ls_rsp,
.max_hw_queues = 1,
.max_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
.max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS,
.dma_boundary = 0xFFFFFFFF,
/* Sizes of additional private data for data structures.
* No use for the last two sizes at this time.
*/
.local_priv_sz = sizeof(struct lpfc_nvme_lport),
.remote_priv_sz = sizeof(struct lpfc_nvme_rport),
.lsrqst_priv_sz = 0,
.fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv),
};
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
/*
* lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA
*
* This routine removes a nvme buffer from head of @hdwq io_buf_list
* and returns to caller.
*
* Return codes:
* NULL - Error
* Pointer to lpfc_nvme_buf - Success
**/
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
static struct lpfc_io_buf *
lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
int idx, int expedite)
{
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
struct lpfc_io_buf *lpfc_ncmd;
struct lpfc_sli4_hdw_queue *qp;
struct sli4_sge *sgl;
struct lpfc_iocbq *pwqeq;
union lpfc_wqe128 *wqe;
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite);
if (lpfc_ncmd) {
pwqeq = &(lpfc_ncmd->cur_iocbq);
wqe = &pwqeq->wqe;
/* Setup key fields in buffer that may have been changed
* if other protocols used this buffer.
*/
pwqeq->iocb_flag = LPFC_IO_NVME;
pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl;
lpfc_ncmd->start_time = jiffies;
lpfc_ncmd->flags = 0;
/* Rsp SGE will be filled in when we rcv an IO
* from the NVME Layer to be sent.
* The cmd is going to be embedded so we need a SKIP SGE.
*/
sgl = lpfc_ncmd->dma_sgl;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
bf_set(lpfc_sli4_sge_last, sgl, 0);
sgl->word2 = cpu_to_le32(sgl->word2);
/* Fill in word 3 / sgl_len during cmd submission */
/* Initialize 64 bytes only */
memset(wqe, 0, sizeof(union lpfc_wqe));
if (lpfc_ndlp_check_qdepth(phba, ndlp)) {
atomic_inc(&ndlp->cmd_pending);
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH;
}
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
} else {
qp = &phba->sli4_hba.hdwq[idx];
qp->empty_io_bufs++;
}
return lpfc_ncmd;
}
/**
* lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list.
* @phba: The Hba for which this call is being executed.
* @lpfc_ncmd: The nvme buffer which is being released.
*
* This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba
* lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer
* and cannot be reused for at least RA_TOV amount of time if it was
* aborted.
**/
static void
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd)
{
struct lpfc_sli4_hdw_queue *qp;
unsigned long iflag = 0;
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp)
atomic_dec(&lpfc_ncmd->ndlp->cmd_pending);
lpfc_ncmd->ndlp = NULL;
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH;
qp = lpfc_ncmd->hdwq;
if (unlikely(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) {
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6310 XB release deferred for "
"ox_id x%x on reqtag x%x\n",
lpfc_ncmd->cur_iocbq.sli4_xritag,
lpfc_ncmd->cur_iocbq.iotag);
spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag);
list_add_tail(&lpfc_ncmd->list,
&qp->lpfc_abts_io_buf_list);
qp->abts_nvme_io_bufs++;
spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag);
scsi: lpfc: Adapt partitioned XRI lists to efficient sharing The XRI get/put lists were partitioned per hardware queue. However, the adapter rarely had sufficient resources to give a large number of resources per queue. As such, it became common for a cpu to encounter a lack of XRI resource and request the upper io stack to retry after returning a BUSY condition. This occurred even though other cpus were idle and not using their resources. Create as efficient a scheme as possible to move resources to the cpus that need them. Each cpu maintains a small private pool which it allocates from for io. There is a watermark that the cpu attempts to keep in the private pool. The private pool, when empty, pulls from a global pool from the cpu. When the cpu's global pool is empty it will pull from other cpu's global pool. As there many cpu global pools (1 per cpu or hardware queue count) and as each cpu selects what cpu to pull from at different rates and at different times, it creates a radomizing effect that minimizes the number of cpu's that will contend with each other when the steal XRI's from another cpu's global pool. On io completion, a cpu will push the XRI back on to its private pool. A watermark level is maintained for the private pool such that when it is exceeded it will move XRI's to the CPU global pool so that other cpu's may allocate them. On NVME, as heartbeat commands are critical to get placed on the wire, a single expedite pool is maintained. When a heartbeat is to be sent, it will allocate an XRI from the expedite pool rather than the normal cpu private/global pools. On any io completion, if a reduction in the expedite pools is seen, it will be replenished before the XRI is placed on the cpu private pool. Statistics are added to aid understanding the XRI levels on each cpu and their behaviors. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-01-29 03:14:28 +08:00
} else
lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp);
}
/**
* lpfc_nvme_create_localport - Create/Bind an nvme localport instance.
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @vport - the lpfc_vport instance requesting a localport.
*
* This routine is invoked to create an nvme localport instance to bind
* to the nvme_fc_transport. It is called once during driver load
* like lpfc_create_shost after all other services are initialized.
* It requires a vport, vpi, and wwns at call time. Other localport
* parameters are modified as the driver's FCID and the Fabric WWN
* are established.
*
* Return codes
* 0 - successful
* -ENOMEM - no heap memory available
* other values - from nvme registration upcall
**/
int
lpfc_nvme_create_localport(struct lpfc_vport *vport)
{
int ret = 0;
struct lpfc_hba *phba = vport->phba;
struct nvme_fc_port_info nfcp_info;
struct nvme_fc_local_port *localport;
struct lpfc_nvme_lport *lport;
/* Initialize this localport instance. The vport wwn usage ensures
* that NPIV is accounted for.
*/
memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info));
nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR;
nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
/* We need to tell the transport layer + 1 because it takes page
* alignment into account. When space for the SGL is allocated we
* allocate + 3, one for cmd, one for rsp and one for this alignment
*/
lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
/* Advertise how many hw queues we support based on cfg_hdw_queue,
* which will not exceed cpu count.
*/
lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue;
if (!IS_ENABLED(CONFIG_NVME_FC))
return ret;
/* localport is allocated from the stack, but the registration
* call allocates heap memory as well as the private area.
*/
ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template,
&vport->phba->pcidev->dev, &localport);
if (!ret) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC,
"6005 Successfully registered local "
"NVME port num %d, localP x%px, private "
"x%px, sg_seg %d\n",
localport->port_num, localport,
localport->private,
lpfc_nvme_template.max_sgl_segments);
/* Private is our lport size declared in the template. */
lport = (struct lpfc_nvme_lport *)localport->private;
vport->localport = localport;
lport->vport = vport;
vport->nvmei_support = 1;
atomic_set(&lport->xmt_fcp_noxri, 0);
atomic_set(&lport->xmt_fcp_bad_ndlp, 0);
atomic_set(&lport->xmt_fcp_qdepth, 0);
atomic_set(&lport->xmt_fcp_err, 0);
atomic_set(&lport->xmt_fcp_wqerr, 0);
atomic_set(&lport->xmt_fcp_abort, 0);
atomic_set(&lport->xmt_ls_abort, 0);
atomic_set(&lport->xmt_ls_err, 0);
atomic_set(&lport->cmpl_fcp_xb, 0);
atomic_set(&lport->cmpl_fcp_err, 0);
atomic_set(&lport->cmpl_ls_xb, 0);
atomic_set(&lport->cmpl_ls_err, 0);
atomic_set(&lport->fc4NvmeLsRequests, 0);
atomic_set(&lport->fc4NvmeLsCmpls, 0);
}
return ret;
}
#if (IS_ENABLED(CONFIG_NVME_FC))
/* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg.
*
* The driver has to wait for the host nvme transport to callback
* indicating the localport has successfully unregistered all
* resources. Since this is an uninterruptible wait, loop every ten
* seconds and print a message indicating no progress.
*
* An uninterruptible wait is used because of the risk of transport-to-
* driver state mismatch.
*/
static void
lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport,
struct lpfc_nvme_lport *lport,
struct completion *lport_unreg_cmp)
{
u32 wait_tmo;
int ret, i, pending = 0;
struct lpfc_sli_ring *pring;
struct lpfc_hba *phba = vport->phba;
scsi: lpfc: Fix scheduling call while in softirq context in lpfc_unreg_rpi The following call trace was seen during HBA reset testing: BUG: scheduling while atomic: swapper/2/0/0x10000100 ... Call Trace: dump_stack+0x19/0x1b __schedule_bug+0x64/0x72 __schedule+0x782/0x840 __cond_resched+0x26/0x30 _cond_resched+0x3a/0x50 mempool_alloc+0xa0/0x170 lpfc_unreg_rpi+0x151/0x630 [lpfc] lpfc_sli_abts_recover_port+0x171/0x190 [lpfc] lpfc_sli4_abts_err_handler+0xb2/0x1f0 [lpfc] lpfc_sli4_io_xri_aborted+0x256/0x300 [lpfc] lpfc_sli4_sp_handle_abort_xri_wcqe.isra.51+0xa3/0x190 [lpfc] lpfc_sli4_fp_handle_cqe+0x89/0x4d0 [lpfc] __lpfc_sli4_process_cq+0xdb/0x2e0 [lpfc] __lpfc_sli4_hba_process_cq+0x41/0x100 [lpfc] lpfc_cq_poll_hdler+0x1a/0x30 [lpfc] irq_poll_softirq+0xc7/0x100 __do_softirq+0xf5/0x280 call_softirq+0x1c/0x30 do_softirq+0x65/0xa0 irq_exit+0x105/0x110 do_IRQ+0x56/0xf0 common_interrupt+0x16a/0x16a With the conversion to blk_io_poll for better interrupt latency in normal cases, it introduced this code path, executed when I/O aborts or logouts are seen, which attempts to allocate memory for a mailbox command to be issued. The allocation is GFP_KERNEL, thus it could attempt to sleep. Fix by creating a work element that performs the event handling for the remote port. This will have the mailbox commands and other items performed in the work element, not the irq. A much better method as the "irq" routine does not stall while performing all this deep handling code. Ensure that allocation failures are handled and send LOGO on failure. Additionally, enlarge the mailbox memory pool to reduce the possibility of additional allocation in this path. Link: https://lore.kernel.org/r/20201020202719.54726-3-james.smart@broadcom.com Fixes: 317aeb83c92b ("scsi: lpfc: Add blk_io_poll support for latency improvment") Cc: <stable@vger.kernel.org> # v5.9+ Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-21 04:27:12 +08:00
struct lpfc_sli4_hdw_queue *qp;
int abts_scsi, abts_nvme;
/* Host transport has to clean up and confirm requiring an indefinite
* wait. Print a message if a 10 second wait expires and renew the
* wait. This is unexpected.
*/
wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000);
while (true) {
ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo);
if (unlikely(!ret)) {
pending = 0;
scsi: lpfc: Fix scheduling call while in softirq context in lpfc_unreg_rpi The following call trace was seen during HBA reset testing: BUG: scheduling while atomic: swapper/2/0/0x10000100 ... Call Trace: dump_stack+0x19/0x1b __schedule_bug+0x64/0x72 __schedule+0x782/0x840 __cond_resched+0x26/0x30 _cond_resched+0x3a/0x50 mempool_alloc+0xa0/0x170 lpfc_unreg_rpi+0x151/0x630 [lpfc] lpfc_sli_abts_recover_port+0x171/0x190 [lpfc] lpfc_sli4_abts_err_handler+0xb2/0x1f0 [lpfc] lpfc_sli4_io_xri_aborted+0x256/0x300 [lpfc] lpfc_sli4_sp_handle_abort_xri_wcqe.isra.51+0xa3/0x190 [lpfc] lpfc_sli4_fp_handle_cqe+0x89/0x4d0 [lpfc] __lpfc_sli4_process_cq+0xdb/0x2e0 [lpfc] __lpfc_sli4_hba_process_cq+0x41/0x100 [lpfc] lpfc_cq_poll_hdler+0x1a/0x30 [lpfc] irq_poll_softirq+0xc7/0x100 __do_softirq+0xf5/0x280 call_softirq+0x1c/0x30 do_softirq+0x65/0xa0 irq_exit+0x105/0x110 do_IRQ+0x56/0xf0 common_interrupt+0x16a/0x16a With the conversion to blk_io_poll for better interrupt latency in normal cases, it introduced this code path, executed when I/O aborts or logouts are seen, which attempts to allocate memory for a mailbox command to be issued. The allocation is GFP_KERNEL, thus it could attempt to sleep. Fix by creating a work element that performs the event handling for the remote port. This will have the mailbox commands and other items performed in the work element, not the irq. A much better method as the "irq" routine does not stall while performing all this deep handling code. Ensure that allocation failures are handled and send LOGO on failure. Additionally, enlarge the mailbox memory pool to reduce the possibility of additional allocation in this path. Link: https://lore.kernel.org/r/20201020202719.54726-3-james.smart@broadcom.com Fixes: 317aeb83c92b ("scsi: lpfc: Add blk_io_poll support for latency improvment") Cc: <stable@vger.kernel.org> # v5.9+ Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-21 04:27:12 +08:00
abts_scsi = 0;
abts_nvme = 0;
for (i = 0; i < phba->cfg_hdw_queue; i++) {
scsi: lpfc: Fix scheduling call while in softirq context in lpfc_unreg_rpi The following call trace was seen during HBA reset testing: BUG: scheduling while atomic: swapper/2/0/0x10000100 ... Call Trace: dump_stack+0x19/0x1b __schedule_bug+0x64/0x72 __schedule+0x782/0x840 __cond_resched+0x26/0x30 _cond_resched+0x3a/0x50 mempool_alloc+0xa0/0x170 lpfc_unreg_rpi+0x151/0x630 [lpfc] lpfc_sli_abts_recover_port+0x171/0x190 [lpfc] lpfc_sli4_abts_err_handler+0xb2/0x1f0 [lpfc] lpfc_sli4_io_xri_aborted+0x256/0x300 [lpfc] lpfc_sli4_sp_handle_abort_xri_wcqe.isra.51+0xa3/0x190 [lpfc] lpfc_sli4_fp_handle_cqe+0x89/0x4d0 [lpfc] __lpfc_sli4_process_cq+0xdb/0x2e0 [lpfc] __lpfc_sli4_hba_process_cq+0x41/0x100 [lpfc] lpfc_cq_poll_hdler+0x1a/0x30 [lpfc] irq_poll_softirq+0xc7/0x100 __do_softirq+0xf5/0x280 call_softirq+0x1c/0x30 do_softirq+0x65/0xa0 irq_exit+0x105/0x110 do_IRQ+0x56/0xf0 common_interrupt+0x16a/0x16a With the conversion to blk_io_poll for better interrupt latency in normal cases, it introduced this code path, executed when I/O aborts or logouts are seen, which attempts to allocate memory for a mailbox command to be issued. The allocation is GFP_KERNEL, thus it could attempt to sleep. Fix by creating a work element that performs the event handling for the remote port. This will have the mailbox commands and other items performed in the work element, not the irq. A much better method as the "irq" routine does not stall while performing all this deep handling code. Ensure that allocation failures are handled and send LOGO on failure. Additionally, enlarge the mailbox memory pool to reduce the possibility of additional allocation in this path. Link: https://lore.kernel.org/r/20201020202719.54726-3-james.smart@broadcom.com Fixes: 317aeb83c92b ("scsi: lpfc: Add blk_io_poll support for latency improvment") Cc: <stable@vger.kernel.org> # v5.9+ Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-21 04:27:12 +08:00
qp = &phba->sli4_hba.hdwq[i];
pring = qp->io_wq->pring;
if (!pring)
continue;
scsi: lpfc: Fix scheduling call while in softirq context in lpfc_unreg_rpi The following call trace was seen during HBA reset testing: BUG: scheduling while atomic: swapper/2/0/0x10000100 ... Call Trace: dump_stack+0x19/0x1b __schedule_bug+0x64/0x72 __schedule+0x782/0x840 __cond_resched+0x26/0x30 _cond_resched+0x3a/0x50 mempool_alloc+0xa0/0x170 lpfc_unreg_rpi+0x151/0x630 [lpfc] lpfc_sli_abts_recover_port+0x171/0x190 [lpfc] lpfc_sli4_abts_err_handler+0xb2/0x1f0 [lpfc] lpfc_sli4_io_xri_aborted+0x256/0x300 [lpfc] lpfc_sli4_sp_handle_abort_xri_wcqe.isra.51+0xa3/0x190 [lpfc] lpfc_sli4_fp_handle_cqe+0x89/0x4d0 [lpfc] __lpfc_sli4_process_cq+0xdb/0x2e0 [lpfc] __lpfc_sli4_hba_process_cq+0x41/0x100 [lpfc] lpfc_cq_poll_hdler+0x1a/0x30 [lpfc] irq_poll_softirq+0xc7/0x100 __do_softirq+0xf5/0x280 call_softirq+0x1c/0x30 do_softirq+0x65/0xa0 irq_exit+0x105/0x110 do_IRQ+0x56/0xf0 common_interrupt+0x16a/0x16a With the conversion to blk_io_poll for better interrupt latency in normal cases, it introduced this code path, executed when I/O aborts or logouts are seen, which attempts to allocate memory for a mailbox command to be issued. The allocation is GFP_KERNEL, thus it could attempt to sleep. Fix by creating a work element that performs the event handling for the remote port. This will have the mailbox commands and other items performed in the work element, not the irq. A much better method as the "irq" routine does not stall while performing all this deep handling code. Ensure that allocation failures are handled and send LOGO on failure. Additionally, enlarge the mailbox memory pool to reduce the possibility of additional allocation in this path. Link: https://lore.kernel.org/r/20201020202719.54726-3-james.smart@broadcom.com Fixes: 317aeb83c92b ("scsi: lpfc: Add blk_io_poll support for latency improvment") Cc: <stable@vger.kernel.org> # v5.9+ Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-21 04:27:12 +08:00
pending += pring->txcmplq_cnt;
abts_scsi += qp->abts_scsi_io_bufs;
abts_nvme += qp->abts_nvme_io_bufs;
}
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6176 Lport x%px Localport x%px wait "
scsi: lpfc: Fix scheduling call while in softirq context in lpfc_unreg_rpi The following call trace was seen during HBA reset testing: BUG: scheduling while atomic: swapper/2/0/0x10000100 ... Call Trace: dump_stack+0x19/0x1b __schedule_bug+0x64/0x72 __schedule+0x782/0x840 __cond_resched+0x26/0x30 _cond_resched+0x3a/0x50 mempool_alloc+0xa0/0x170 lpfc_unreg_rpi+0x151/0x630 [lpfc] lpfc_sli_abts_recover_port+0x171/0x190 [lpfc] lpfc_sli4_abts_err_handler+0xb2/0x1f0 [lpfc] lpfc_sli4_io_xri_aborted+0x256/0x300 [lpfc] lpfc_sli4_sp_handle_abort_xri_wcqe.isra.51+0xa3/0x190 [lpfc] lpfc_sli4_fp_handle_cqe+0x89/0x4d0 [lpfc] __lpfc_sli4_process_cq+0xdb/0x2e0 [lpfc] __lpfc_sli4_hba_process_cq+0x41/0x100 [lpfc] lpfc_cq_poll_hdler+0x1a/0x30 [lpfc] irq_poll_softirq+0xc7/0x100 __do_softirq+0xf5/0x280 call_softirq+0x1c/0x30 do_softirq+0x65/0xa0 irq_exit+0x105/0x110 do_IRQ+0x56/0xf0 common_interrupt+0x16a/0x16a With the conversion to blk_io_poll for better interrupt latency in normal cases, it introduced this code path, executed when I/O aborts or logouts are seen, which attempts to allocate memory for a mailbox command to be issued. The allocation is GFP_KERNEL, thus it could attempt to sleep. Fix by creating a work element that performs the event handling for the remote port. This will have the mailbox commands and other items performed in the work element, not the irq. A much better method as the "irq" routine does not stall while performing all this deep handling code. Ensure that allocation failures are handled and send LOGO on failure. Additionally, enlarge the mailbox memory pool to reduce the possibility of additional allocation in this path. Link: https://lore.kernel.org/r/20201020202719.54726-3-james.smart@broadcom.com Fixes: 317aeb83c92b ("scsi: lpfc: Add blk_io_poll support for latency improvment") Cc: <stable@vger.kernel.org> # v5.9+ Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-21 04:27:12 +08:00
"timed out. Pending %d [%d:%d]. "
"Renewing.\n",
lport, vport->localport, pending,
abts_scsi, abts_nvme);
continue;
}
break;
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6177 Lport x%px Localport x%px Complete Success\n",
lport, vport->localport);
}
#endif
/**
* lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport.
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
* @vport: pointer to a host virtual N_Port data structure
*
* This routine is invoked to destroy all lports bound to the phba.
* The lport memory was allocated by the nvme fc transport and is
* released there. This routine ensures all rports bound to the
* lport have been disconnected.
*
**/
void
lpfc_nvme_destroy_localport(struct lpfc_vport *vport)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
struct nvme_fc_local_port *localport;
struct lpfc_nvme_lport *lport;
int ret;
DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp);
if (vport->nvmei_support == 0)
return;
localport = vport->localport;
lport = (struct lpfc_nvme_lport *)localport->private;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
"6011 Destroying NVME localport x%px\n",
localport);
/* lport's rport list is clear. Unregister
* lport and release resources.
*/
lport->lport_unreg_cmp = &lport_unreg_cmp;
ret = nvme_fc_unregister_localport(localport);
/* Wait for completion. This either blocks
* indefinitely or succeeds
*/
lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp);
vport->localport = NULL;
/* Regardless of the unregister upcall response, clear
* nvmei_support. All rports are unregistered and the
* driver will clean up.
*/
vport->nvmei_support = 0;
if (ret == 0) {
lpfc_printf_vlog(vport,
KERN_INFO, LOG_NVME_DISC,
"6009 Unregistered lport Success\n");
} else {
lpfc_printf_vlog(vport,
KERN_INFO, LOG_NVME_DISC,
"6010 Unregistered lport "
"Failed, status x%x\n",
ret);
}
#endif
}
void
lpfc_nvme_update_localport(struct lpfc_vport *vport)
{
Fix nvme initiator handling when not enabled. Fix nvme initiator handline when CONFIG_LPFC_NVME_INITIATOR is not enabled. With update nvme upstream driver sources, loading the driver with nvme enabled resulting in this Oops. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: lpfc_nvme_update_localport+0x23/0xd0 [lpfc] PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 10256 Comm: lpfc_worker_0 Tainted Hardware name: ... task: ffff881028191c40 task.stack: ffff880ffdf00000 RIP: 0010:lpfc_nvme_update_localport+0x23/0xd0 [lpfc] RSP: 0018:ffff880ffdf03c20 EFLAGS: 00010202 Cause: As the initiator driver completes discovery at different stages, it call lpfc_nvme_update_localport to hint that the DID and role may have changed. In the implementation of lpfc_nvme_update_localport, the driver was not validating the localport or the lport during the execution of the update_localport routine. With the recent upstream additions to the driver, the create_localport routine didn't run and so the localport was NULL causing the page-fault Oops. Fix: Add the CONFIG_LPFC_NVME_INITIATOR preprocessor inclusions to lpfc_nvme_update_localport to turn off all routine processing when the running kernel does not have NVME configured. Add NULL pointer checks on the localport and lport in lpfc_nvme_update_localport and dump messages if they are NULL and just exit. Also one alingment issue fixed. Repalces the ifdef with the IS_ENABLED macro. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:04:57 +08:00
#if (IS_ENABLED(CONFIG_NVME_FC))
struct nvme_fc_local_port *localport;
struct lpfc_nvme_lport *lport;
localport = vport->localport;
Fix nvme initiator handling when not enabled. Fix nvme initiator handline when CONFIG_LPFC_NVME_INITIATOR is not enabled. With update nvme upstream driver sources, loading the driver with nvme enabled resulting in this Oops. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: lpfc_nvme_update_localport+0x23/0xd0 [lpfc] PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 10256 Comm: lpfc_worker_0 Tainted Hardware name: ... task: ffff881028191c40 task.stack: ffff880ffdf00000 RIP: 0010:lpfc_nvme_update_localport+0x23/0xd0 [lpfc] RSP: 0018:ffff880ffdf03c20 EFLAGS: 00010202 Cause: As the initiator driver completes discovery at different stages, it call lpfc_nvme_update_localport to hint that the DID and role may have changed. In the implementation of lpfc_nvme_update_localport, the driver was not validating the localport or the lport during the execution of the update_localport routine. With the recent upstream additions to the driver, the create_localport routine didn't run and so the localport was NULL causing the page-fault Oops. Fix: Add the CONFIG_LPFC_NVME_INITIATOR preprocessor inclusions to lpfc_nvme_update_localport to turn off all routine processing when the running kernel does not have NVME configured. Add NULL pointer checks on the localport and lport in lpfc_nvme_update_localport and dump messages if they are NULL and just exit. Also one alingment issue fixed. Repalces the ifdef with the IS_ENABLED macro. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:04:57 +08:00
if (!localport) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
"6710 Update NVME fail. No localport\n");
return;
}
lport = (struct lpfc_nvme_lport *)localport->private;
Fix nvme initiator handling when not enabled. Fix nvme initiator handline when CONFIG_LPFC_NVME_INITIATOR is not enabled. With update nvme upstream driver sources, loading the driver with nvme enabled resulting in this Oops. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: lpfc_nvme_update_localport+0x23/0xd0 [lpfc] PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 10256 Comm: lpfc_worker_0 Tainted Hardware name: ... task: ffff881028191c40 task.stack: ffff880ffdf00000 RIP: 0010:lpfc_nvme_update_localport+0x23/0xd0 [lpfc] RSP: 0018:ffff880ffdf03c20 EFLAGS: 00010202 Cause: As the initiator driver completes discovery at different stages, it call lpfc_nvme_update_localport to hint that the DID and role may have changed. In the implementation of lpfc_nvme_update_localport, the driver was not validating the localport or the lport during the execution of the update_localport routine. With the recent upstream additions to the driver, the create_localport routine didn't run and so the localport was NULL causing the page-fault Oops. Fix: Add the CONFIG_LPFC_NVME_INITIATOR preprocessor inclusions to lpfc_nvme_update_localport to turn off all routine processing when the running kernel does not have NVME configured. Add NULL pointer checks on the localport and lport in lpfc_nvme_update_localport and dump messages if they are NULL and just exit. Also one alingment issue fixed. Repalces the ifdef with the IS_ENABLED macro. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:04:57 +08:00
if (!lport) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME,
"6171 Update NVME fail. localP x%px, No lport\n",
Fix nvme initiator handling when not enabled. Fix nvme initiator handline when CONFIG_LPFC_NVME_INITIATOR is not enabled. With update nvme upstream driver sources, loading the driver with nvme enabled resulting in this Oops. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: lpfc_nvme_update_localport+0x23/0xd0 [lpfc] PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 10256 Comm: lpfc_worker_0 Tainted Hardware name: ... task: ffff881028191c40 task.stack: ffff880ffdf00000 RIP: 0010:lpfc_nvme_update_localport+0x23/0xd0 [lpfc] RSP: 0018:ffff880ffdf03c20 EFLAGS: 00010202 Cause: As the initiator driver completes discovery at different stages, it call lpfc_nvme_update_localport to hint that the DID and role may have changed. In the implementation of lpfc_nvme_update_localport, the driver was not validating the localport or the lport during the execution of the update_localport routine. With the recent upstream additions to the driver, the create_localport routine didn't run and so the localport was NULL causing the page-fault Oops. Fix: Add the CONFIG_LPFC_NVME_INITIATOR preprocessor inclusions to lpfc_nvme_update_localport to turn off all routine processing when the running kernel does not have NVME configured. Add NULL pointer checks on the localport and lport in lpfc_nvme_update_localport and dump messages if they are NULL and just exit. Also one alingment issue fixed. Repalces the ifdef with the IS_ENABLED macro. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:04:57 +08:00
localport);
return;
}
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
"6012 Update NVME lport x%px did x%x\n",
localport, vport->fc_myDID);
localport->port_id = vport->fc_myDID;
if (localport->port_id == 0)
localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY;
else
localport->port_role = FC_PORT_ROLE_NVME_INITIATOR;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6030 bound lport x%px to DID x%06x\n",
lport, localport->port_id);
Fix nvme initiator handling when not enabled. Fix nvme initiator handline when CONFIG_LPFC_NVME_INITIATOR is not enabled. With update nvme upstream driver sources, loading the driver with nvme enabled resulting in this Oops. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: lpfc_nvme_update_localport+0x23/0xd0 [lpfc] PGD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 10256 Comm: lpfc_worker_0 Tainted Hardware name: ... task: ffff881028191c40 task.stack: ffff880ffdf00000 RIP: 0010:lpfc_nvme_update_localport+0x23/0xd0 [lpfc] RSP: 0018:ffff880ffdf03c20 EFLAGS: 00010202 Cause: As the initiator driver completes discovery at different stages, it call lpfc_nvme_update_localport to hint that the DID and role may have changed. In the implementation of lpfc_nvme_update_localport, the driver was not validating the localport or the lport during the execution of the update_localport routine. With the recent upstream additions to the driver, the create_localport routine didn't run and so the localport was NULL causing the page-fault Oops. Fix: Add the CONFIG_LPFC_NVME_INITIATOR preprocessor inclusions to lpfc_nvme_update_localport to turn off all routine processing when the running kernel does not have NVME configured. Add NULL pointer checks on the localport and lport in lpfc_nvme_update_localport and dump messages if they are NULL and just exit. Also one alingment issue fixed. Repalces the ifdef with the IS_ENABLED macro. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:04:57 +08:00
#endif
}
int
lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
int ret = 0;
struct nvme_fc_local_port *localport;
struct lpfc_nvme_lport *lport;
struct lpfc_nvme_rport *rport;
struct lpfc_nvme_rport *oldrport;
struct nvme_fc_remote_port *remote_port;
struct nvme_fc_port_info rpinfo;
struct lpfc_nodelist *prev_ndlp = NULL;
struct fc_rport *srport = ndlp->rport;
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC,
"6006 Register NVME PORT. DID x%06x nlptype x%x\n",
ndlp->nlp_DID, ndlp->nlp_type);
localport = vport->localport;
if (!localport)
return 0;
lport = (struct lpfc_nvme_lport *)localport->private;
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
/* NVME rports are not preserved across devloss.
* Just register this instance. Note, rpinfo->dev_loss_tmo
* is left 0 to indicate accept transport defaults. The
* driver communicates port role capabilities consistent
* with the PRLI response data.
*/
memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info));
rpinfo.port_id = ndlp->nlp_DID;
if (ndlp->nlp_type & NLP_NVME_TARGET)
rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET;
if (ndlp->nlp_type & NLP_NVME_INITIATOR)
rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR;
if (ndlp->nlp_type & NLP_NVME_DISCOVERY)
rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY;
rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
if (srport)
rpinfo.dev_loss_tmo = srport->dev_loss_tmo;
else
rpinfo.dev_loss_tmo = vport->cfg_devloss_tmo;
spin_lock_irq(&ndlp->lock);
oldrport = lpfc_ndlp_get_nrport(ndlp);
if (oldrport) {
prev_ndlp = oldrport->ndlp;
spin_unlock_irq(&ndlp->lock);
} else {
spin_unlock_irq(&ndlp->lock);
scsi: lpfc: Rework locations of ndlp reference taking Now that the driver has gone to a normal ref interface (with no odd logic) the discovery logic needs to be updated to reworked so that it properly takes references when it should and give them up when it should. Rework the driver for the following get/put model: - Move gets to just before an I/O is issued. Add gets for places where an I/O was issued without one. - Ensure that failures from lpfc_nlp_get() are handled by the driver. - Check and fix the placement of lpfc_nlp_puts relative to io completions. Note: some of these paths may not release the reference on the exact io completion as the reference is held as the code takes another step in the discovery thread and which may cause another io to be issued. - Rearrange some code for error processing and calling lpfc_nlp_put. - Fix some places of incorrect reference freeing that was causing the premature releasing of the structure. - Nvmet plogi handling performs unreg_rpi's. The reference counts were unbalanced resulting in premature node removal. In some cases this caused loss of node discovery. Corrected the reftaking around nvmet plogis. Nodes that experience devloss now get released from the node list now that there is a proper reference taking. Link: https://lore.kernel.org/r/20201115192646.12977-3-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:31 +08:00
if (!lpfc_nlp_get(ndlp)) {
dev_warn(&vport->phba->pcidev->dev,
"Warning - No node ref - exit register\n");
return 0;
}
}
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port);
if (!ret) {
/* If the ndlp already has an nrport, this is just
* a resume of the existing rport. Else this is a
* new rport.
*/
/* Guard against an unregister/reregister
* race that leaves the WAIT flag set.
*/
spin_lock_irq(&ndlp->lock);
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
ndlp->fc4_xpt_flags &= ~NLP_WAIT_FOR_UNREG;
ndlp->fc4_xpt_flags |= NVME_XPT_REGD;
spin_unlock_irq(&ndlp->lock);
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
rport = remote_port->private;
if (oldrport) {
/* Sever the ndlp<->rport association
* before dropping the ndlp ref from
* register.
*/
spin_lock_irq(&ndlp->lock);
ndlp->nrport = NULL;
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
ndlp->fc4_xpt_flags &= ~NLP_WAIT_FOR_UNREG;
spin_unlock_irq(&ndlp->lock);
rport->ndlp = NULL;
rport->remoteport = NULL;
/* Reference only removed if previous NDLP is no longer
* active. It might be just a swap and removing the
* reference would cause a premature cleanup.
*/
if (prev_ndlp && prev_ndlp != ndlp) {
scsi: lpfc: Rework remote port ref counting and node freeing When a remote port is disconnected and disappears, its node structure (ndlp) stays allocated and on a vport node list. While on the list it can be matched, thus requires validation checks on state to be added in numerous code paths. If the node comes back, its possible for there to be multiple node structures for the same device on the vport node list. There is no reason to keep the node structure around after it is no longer in existence, and the current implementation creates problems for itself (multiple nodes) and lots of unnecessary code for state validation. Additionally, the reference taking on the node structure didn't follow the normal model used by the kernel kref api. It included lots of odd logic to match state with reference count. The combination of this odd logic plus the way it was implicitly used in the discovery engine made its reference taking implementation suspect and extremely hard to follow. Change the driver such that the reference taking routines are now normal ref increments/decrements and callout on refcount=0. With this in place, the rework can be done such that the node structure is fully removed and deallocated when the remote port no longer exists and all references are removed. This removal logic, and the basic ref counting are intrically tied, thus in a single patch. Link: https://lore.kernel.org/r/20201115192646.12977-2-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:30 +08:00
if (!prev_ndlp->nrport)
lpfc_nlp_put(prev_ndlp);
}
}
/* Clean bind the rport to the ndlp. */
rport->remoteport = remote_port;
rport->lport = lport;
rport->ndlp = ndlp;
spin_lock_irq(&ndlp->lock);
ndlp->nrport = rport;
spin_unlock_irq(&ndlp->lock);
lpfc_printf_vlog(vport, KERN_INFO,
LOG_NVME_DISC | LOG_NODE,
"6022 Bind lport x%px to remoteport x%px "
"rport x%px WWNN 0x%llx, "
"Rport WWPN 0x%llx DID "
"x%06x Role x%x, ndlp %p prev_ndlp x%px\n",
lport, remote_port, rport,
rpinfo.node_name, rpinfo.port_name,
rpinfo.port_id, rpinfo.port_role,
ndlp, prev_ndlp);
} else {
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
lpfc_printf_vlog(vport, KERN_ERR,
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
LOG_TRACE_EVENT,
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
"6031 RemotePort Registration failed "
"err: %d, DID x%06x\n",
ret, ndlp->nlp_DID);
}
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
return ret;
#else
return 0;
#endif
}
scsi: lpfc: lpfc_nvme: Fix some kernel-doc related issues Fixes the following W=1 kernel build warning(s): drivers/scsi/lpfc/lpfc_nvme.c: In function ‘lpfc_nvme_ls_abort’: drivers/scsi/lpfc/lpfc_nvme.c:943:19: warning: variable ‘phba’ set but not used [-Wunused-but-set-variable] drivers/scsi/lpfc/lpfc_nvme.c:256: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_create_queue' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:804: warning: Excess function parameter 'nvme_rport' description in 'lpfc_nvme_ls_req' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1312: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_cmd' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Function parameter or member 'lpfc_ncmd' not described in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1416: warning: Excess function parameter 'lpfcn_cmd' description in 'lpfc_nvme_prep_io_dma' drivers/scsi/lpfc/lpfc_nvme.c:1594: warning: bad line: indicated in @lpfc_nvme_rport. drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1605: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_io_submit' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Function parameter or member 'abts_cmpl' not described in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1852: warning: Excess function parameter 'rspiocb' description in 'lpfc_nvme_abort_fcreq_cmpl' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_lport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_rport' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Function parameter or member 'pnvme_fcreq' not described in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_pnvme' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_lport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_rport' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:1888: warning: Excess function parameter 'lpfc_nvme_fcreq' description in 'lpfc_nvme_fcp_abort' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'ndlp' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'idx' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2089: warning: Function parameter or member 'expedite' not described in 'lpfc_get_nvme_buf' drivers/scsi/lpfc/lpfc_nvme.c:2193: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_create_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2326: warning: Excess function parameter 'pnvme' description in 'lpfc_nvme_destroy_localport' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'vport' not described in 'lpfc_nvme_rescan_port' drivers/scsi/lpfc/lpfc_nvme.c:2544: warning: Function parameter or member 'ndlp' not described in 'lpfc_nvme_rescan_port' Link: https://lore.kernel.org/r/20201102142359.561122-13-lee.jones@linaro.org Cc: James Smart <james.smart@broadcom.com> Cc: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-02 22:23:52 +08:00
/*
* lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport
*
* If the ndlp represents an NVME Target, that we are logged into,
* ping the NVME FC Transport layer to initiate a device rescan
* on this remote NPort.
*/
void
lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
struct lpfc_nvme_rport *nrport;
struct nvme_fc_remote_port *remoteport = NULL;
spin_lock_irq(&ndlp->lock);
nrport = lpfc_ndlp_get_nrport(ndlp);
if (nrport)
remoteport = nrport->remoteport;
spin_unlock_irq(&ndlp->lock);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6170 Rescan NPort DID x%06x type x%x "
"state x%x nrport x%px remoteport x%px\n",
ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state,
nrport, remoteport);
if (!nrport || !remoteport)
goto rescan_exit;
/* Only rescan if we are an NVME target in the MAPPED state */
if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY &&
ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
nvme_fc_rescan_remoteport(remoteport);
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6172 NVME rescanned DID x%06x "
"port_state x%x\n",
ndlp->nlp_DID, remoteport->port_state);
}
return;
rescan_exit:
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6169 Skip NVME Rport Rescan, NVME remoteport "
"unregistered\n");
#endif
}
/* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport.
*
* There is no notion of Devloss or rport recovery from the current
* nvme_transport perspective. Loss of an rport just means IO cannot
* be sent and recovery is completely up to the initator.
* For now, the driver just unbinds the DID and port_role so that
* no further IO can be issued. Changes are planned for later.
*
* Notes - the ndlp reference count is not decremented here since
* since there is no nvme_transport api for devloss. Node ref count
* is only adjusted in driver unload.
*/
void
lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
int ret;
struct nvme_fc_local_port *localport;
struct lpfc_nvme_lport *lport;
struct lpfc_nvme_rport *rport;
struct nvme_fc_remote_port *remoteport = NULL;
localport = vport->localport;
/* This is fundamental error. The localport is always
* available until driver unload. Just exit.
*/
if (!localport)
return;
lport = (struct lpfc_nvme_lport *)localport->private;
if (!lport)
goto input_err;
spin_lock_irq(&ndlp->lock);
rport = lpfc_ndlp_get_nrport(ndlp);
if (rport)
remoteport = rport->remoteport;
spin_unlock_irq(&ndlp->lock);
if (!remoteport)
goto input_err;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6033 Unreg nvme remoteport x%px, portname x%llx, "
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
"port_id x%06x, portstate x%x port type x%x "
"refcnt %d\n",
remoteport, remoteport->port_name,
remoteport->port_id, remoteport->port_state,
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
ndlp->nlp_type, kref_read(&ndlp->kref));
/* Sanity check ndlp type. Only call for NVME ports. Don't
* clear any rport state until the transport calls back.
*/
if (ndlp->nlp_type & NLP_NVME_TARGET) {
scsi: lpfc: Add nvme initiator devloss support Add nvme initiator devloss support The existing implementation was based on no devloss behavior in the transport (e.g. immediate teardown) so code didn't properly handle delayed nvme rport device unregister calls. In addition, the driver was not correctly cycling the rport port role for each register-unregister-reregister process. This patch does the following: Rework the code to properly handle rport device unregister calls and potential re-allocation of the remoteport structure if the port comes back in under dev_loss_tmo. Correct code that was incorrectly cycling the rport port role for each register-unregister-reregister process. Prep the code to enable calling the nvme_fc transport api to dynamically update dev_loss_tmo when the scsi sysfs interface changes it. Memset the rpinfo structure in the registration call to enforce "accept nvme transport defaults" in the registration call. Driver parameters do influence the dev_loss_tmo transport setting dynamically. Simplifies the register function: the driver was incorrectly searching its local rport list to determine resume or new semantics, which is not valid as the transport already handles this. The rport was resumed if the rport handed back matches the ndlp->nrport pointer. Otherwise, devloss fired and the ndlp's nrport is NULL. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-02 12:06:55 +08:00
/* No concern about the role change on the nvme remoteport.
* The transport will update it.
*/
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
spin_lock_irq(&vport->phba->hbalock);
ndlp->fc4_xpt_flags |= NLP_WAIT_FOR_UNREG;
spin_unlock_irq(&vport->phba->hbalock);
/* Don't let the host nvme transport keep sending keep-alives
* on this remoteport. Vport is unloading, no recovery. The
* return values is ignored. The upcall is a courtesy to the
* transport.
*/
if (vport->load_flag & FC_UNLOADING)
(void)nvme_fc_set_remoteport_devloss(remoteport, 0);
ret = nvme_fc_unregister_remoteport(remoteport);
scsi: lpfc: Fix refcounting around SCSI and NVMe transport APIs Due to bug history and code review, the node reference counting approach in the driver isn't implemented consistently with how the scsi and nvme transport perform registrations and unregistrations and their callbacks. This resulted in many bad/stale node pointers. Reword the driver so that reference handling is performed as follows: - The initial node reference is taken on structure allocation - Take a reference on any add/register call to the transport - Remove a reference on any delete/unregister call to the transport - After the node has fully removed from both the SCSI and NVMEe transports (dev_loss_callbacks have called back) call the discovery engine DEVICE_RM event which will remove the final reference and release the node structure. - Alter dev_loss handling when a vport or base port is unloading. - Remove the put_node handling - no longer needed. - Rewrite the vport_delete handling on reference counts. Part of this effort was driven from the FDISC not registering with the transport and disrupting the model for node reference counting. - Deleted lpfc_nlp_remove. Pushed it's remaining ops into lpfc_nlp_release. - Several other small code cleanups. Link: https://lore.kernel.org/r/20201115192646.12977-5-james.smart@broadcom.com Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-11-16 03:26:33 +08:00
/* The driver no longer knows if the nrport memory is valid.
* because the controller teardown process has begun and
* is asynchronous. Break the binding in the ndlp. Also
* remove the register ndlp reference to setup node release.
*/
ndlp->nrport = NULL;
lpfc_nlp_put(ndlp);
if (ret != 0) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6167 NVME unregister failed %d "
"port_state x%x\n",
ret, remoteport->port_state);
}
}
return;
input_err:
#endif
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6168 State error: lport x%px, rport x%px FCID x%06x\n",
vport->localport, ndlp->rport, ndlp->nlp_DID);
}
/**
* lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort
* @phba: pointer to lpfc hba data structure.
* @axri: pointer to the fcp xri abort wcqe structure.
* @lpfc_ncmd: The nvme job structure for the request being aborted.
*
* This routine is invoked by the worker thread to process a SLI4 fast-path
* NVME aborted xri. Aborted NVME IO commands are completed to the transport
* here.
**/
void
lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
struct sli4_wcqe_xri_aborted *axri,
struct lpfc_io_buf *lpfc_ncmd)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
struct nvmefc_fcp_req *nvme_cmd = NULL;
struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp;
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
if (ndlp)
lpfc_sli4_abts_err_handler(phba, ndlp, axri);
Update ABORT processing for NVMET. The driver with nvme had this routine stubbed. Right now XRI_ABORTED_CQE is not handled and the FC NVMET Transport has a new API for the driver. Missing code path, new NVME abort API Update ABORT processing for NVMET There are 3 new FC NVMET Transport API/ template routines for NVMET: lpfc_nvmet_xmt_fcp_release This NVMET template callback routine called to release context associated with an IO This routine is ALWAYS called last, even if the IO was aborted or completed in error. lpfc_nvmet_xmt_fcp_abort This NVMET template callback routine called to abort an exchange that has an IO in progress nvmet_fc_rcv_fcp_req When the lpfc driver receives an ABTS, this NVME FC transport layer callback routine is called. For this case there are 2 paths thru the driver: the driver either has an outstanding exchange / context for the XRI to be aborted or not. If not, a BA_RJT is issued otherwise a BA_ACC NVMET Driver abort paths: There are 2 paths for aborting an IO. The first one is we receive an IO and decide not to process it because of lack of resources. An unsolicated ABTS is immediately sent back to the initiator as a response. lpfc_nvmet_unsol_fcp_buffer lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) The second one is we sent the IO up to the NVMET transport layer to process, and for some reason the NVME Transport layer decided to abort the IO before it completes all its phases. For this case there are 2 paths thru the driver: the driver either has an outstanding TSEND/TRECEIVE/TRSP WQE or no outstanding WQEs are present for the exchange / context. lpfc_nvmet_xmt_fcp_abort if (LPFC_NVMET_IO_INP) lpfc_nvmet_sol_fcp_issue_abort (ABORT_WQE) lpfc_nvmet_sol_fcp_abort_cmp else lpfc_nvmet_unsol_fcp_issue_abort lpfc_nvmet_unsol_issue_abort (XMIT_SEQUENCE_WQE) lpfc_nvmet_unsol_fcp_abort_cmp Context flags: LPFC_NVMET_IOP - his flag signifies an IO is in progress on the exchange. LPFC_NVMET_XBUSY - this flag indicates the IO completed but the firmware is still busy with the corresponding exchange. The exchange should not be reused until after a XRI_ABORTED_CQE is received for that exchange. LPFC_NVMET_ABORT_OP - this flag signifies an ABORT_WQE was issued on the exchange. LPFC_NVMET_CTX_RLS - this flag signifies a context free was requested, but we are deferring it due to an XBUSY or ABORT in progress. A ctxlock is added to the context structure that is used whenever these flags are set/read within the context of an IO. The LPFC_NVMET_CTX_RLS flag is only set in the defer_relase routine when the transport has resolved all IO associated with the buffer. The flag is cleared when the CTX is associated with a new IO. An exchange can has both an LPFC_NVMET_XBUSY and a LPFC_NVMET_ABORT_OP condition active simultaneously. Both conditions must complete before the exchange is freed. When the abort callback (lpfc_nvmet_xmt_fcp_abort) is envoked: If there is an outstanding IO, the driver will issue an ABORT_WQE. This should result in 3 completions for the exchange: 1) IO cmpl with XB bit set 2) Abort WQE cmpl 3) XRI_ABORTED_CQE cmpl For this scenerio, after completion #1, the NVMET Transport IO rsp callback is called. After completion #2, no action is taken with respect to the exchange / context. After completion #3, the exchange context is free for re-use on another IO. If there is no outstanding activity on the exchange, the driver will send a ABTS to the Initiator. Upon completion of this WQE, the exchange / context is freed for re-use on another IO. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-22 07:05:04 +08:00
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6311 nvme_cmd %p xri x%x tag x%x abort complete and "
"xri released\n",
lpfc_ncmd->nvmeCmd, xri,
lpfc_ncmd->cur_iocbq.iotag);
/* Aborted NVME commands are required to not complete
* before the abort exchange command fully completes.
* Once completed, it is available via the put list.
*/
if (lpfc_ncmd->nvmeCmd) {
nvme_cmd = lpfc_ncmd->nvmeCmd;
nvme_cmd->done(nvme_cmd);
lpfc_ncmd->nvmeCmd = NULL;
}
lpfc_release_nvme_buf(phba, lpfc_ncmd);
}
/**
* lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete
* @phba: Pointer to HBA context object.
*
* This function flushes all wqes in the nvme rings and frees all resources
* in the txcmplq. This function does not issue abort wqes for the IO
* commands in txcmplq, they will just be returned with
* IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
* slot has been permanently disabled.
**/
void
lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba)
{
struct lpfc_sli_ring *pring;
u32 i, wait_cnt = 0;
2019-01-29 03:14:21 +08:00
if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq)
return;
/* Cycle through all IO rings and make sure all outstanding
* WQEs have been removed from the txcmplqs.
*/
2019-01-29 03:14:21 +08:00
for (i = 0; i < phba->cfg_hdw_queue; i++) {
if (!phba->sli4_hba.hdwq[i].io_wq)
continue;
pring = phba->sli4_hba.hdwq[i].io_wq->pring;
if (!pring)
continue;
/* Retrieve everything on the txcmplq */
while (!list_empty(&pring->txcmplq)) {
msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
wait_cnt++;
/* The sleep is 10mS. Every ten seconds,
* dump a message. Something is wrong.
*/
if ((wait_cnt % 1000) == 0) {
scsi: lpfc: Add an internal trace log buffer The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01 05:50:00 +08:00
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
"6178 NVME IO not empty, "
"cnt %d\n", wait_cnt);
}
}
}
}
scsi: lpfc: Fix hang when downloading fw on port enabled for nvme As part of firmware download, the adapter is reset. On the adapter the reset causes the function to stop and all outstanding io is terminated (without responses). The reset path then starts teardown of the adapter, starting with deregistration of the remote ports with the nvme-fc transport. The local port is then deregistered and the driver waits for local port deregistration. This never finishes. The remote port deregistrations terminated the nvme controllers, causing them to send aborts for all the outstanding io. The aborts were serviced in the driver, but stalled due to its state. The nvme layer then stops to reclaim it's outstanding io before continuing. The io must be returned before the reset on the controller is deemed complete and the controller delete performed. The remote port deregistration won't complete until all the controllers are terminated. And the local port deregistration won't complete until all controllers and remote ports are terminated. Thus things hang. The issue is the reset which stopped the adapter also stopped all the responses that would drive i/o completions, and the aborts were also stopped that stopped i/o completions. The driver, when resetting the adapter like this, needs to be generating the completions as part of the adapter reset so that I/O complete (in error), and any aborts are not queued. Fix by adding flush routines whenever the adapter port has been reset or discovered in error. The flush routines will generate the completions for the scsi and nvme outstanding io. The abort ios, if waiting, will be caught and flushed as well. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-15 07:56:55 +08:00
void
lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn)
{
#if (IS_ENABLED(CONFIG_NVME_FC))
struct lpfc_io_buf *lpfc_ncmd;
struct nvmefc_fcp_req *nCmd;
struct lpfc_nvme_fcpreq_priv *freqpriv;
if (!pwqeIn->context1) {
lpfc_sli_release_iocbq(phba, pwqeIn);
return;
}
/* For abort iocb just return, IO iocb will do a done call */
if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) ==
CMD_ABORT_XRI_CX) {
lpfc_sli_release_iocbq(phba, pwqeIn);
return;
}
lpfc_ncmd = (struct lpfc_io_buf *)pwqeIn->context1;
spin_lock(&lpfc_ncmd->buf_lock);
if (!lpfc_ncmd->nvmeCmd) {
spin_unlock(&lpfc_ncmd->buf_lock);
lpfc_release_nvme_buf(phba, lpfc_ncmd);
return;
}
nCmd = lpfc_ncmd->nvmeCmd;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
"6194 NVME Cancel xri %x\n",
lpfc_ncmd->cur_iocbq.sli4_xritag);
nCmd->transferred_length = 0;
nCmd->rcv_rsplen = 0;
nCmd->status = NVME_SC_INTERNAL;
freqpriv = nCmd->private;
freqpriv->nvme_buf = NULL;
lpfc_ncmd->nvmeCmd = NULL;
spin_unlock(&lpfc_ncmd->buf_lock);
nCmd->done(nCmd);
/* Call release with XB=1 to queue the IO into the abort list. */
lpfc_release_nvme_buf(phba, lpfc_ncmd);
#endif
}