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linux-next/drivers/scsi/lpfc/lpfc_nvmet.c
Linus Torvalds 572c01ba19 SCSI misc on 20170907 
This is mostly updates of the usual suspects: lpfc, qla2xxx, hisi_sas, megaraid_sas, zfcp and a host of minor updates.
 
 The major driver change here is the elimination of the block based
 cciss driver in favour of the SCSI based hpsa driver (which now drives
 all the legacy cases cciss used to be required for).  Plus a reset
 handler clean up and the redo of the SAS SMP handler to use bsg lib.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates of the usual suspects: lpfc, qla2xxx, hisi_sas,
  megaraid_sas, zfcp and a host of minor updates.

  The major driver change here is the elimination of the block based
  cciss driver in favour of the SCSI based hpsa driver (which now drives
  all the legacy cases cciss used to be required for). Plus a reset
  handler clean up and the redo of the SAS SMP handler to use bsg lib"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits)
  scsi: scsi-mq: Always unprepare before requeuing a request
  scsi: Show .retries and .jiffies_at_alloc in debugfs
  scsi: Improve requeuing behavior
  scsi: Call scsi_initialize_rq() for filesystem requests
  scsi: qla2xxx: Reset the logo flag, after target re-login.
  scsi: qla2xxx: Fix slow mem alloc behind lock
  scsi: qla2xxx: Clear fc4f_nvme flag
  scsi: qla2xxx: add missing includes for qla_isr
  scsi: qla2xxx: Fix an integer overflow in sysfs code
  scsi: aacraid: report -ENOMEM to upper layer from aac_convert_sgraw2()
  scsi: aacraid: get rid of one level of indentation
  scsi: aacraid: fix indentation errors
  scsi: storvsc: fix memory leak on ring buffer busy
  scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough
  scsi: smartpqi: remove the smp_handler stub
  scsi: hpsa: remove the smp_handler stub
  scsi: bsg-lib: pass the release callback through bsg_setup_queue
  scsi: Rework handling of scsi_device.vpd_pg8[03]
  scsi: Rework the code for caching Vital Product Data (VPD)
  scsi: rcu: Introduce rcu_swap_protected()
  ...
2017-09-07 21:11:05 -07:00

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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channsel Host Bus Adapters. *
* Copyright (C) 2017 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Limited 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 <../drivers/nvme/host/nvme.h>
#include <linux/nvme-fc-driver.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_scsi.h"
#include "lpfc_nvme.h"
#include "lpfc_nvmet.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"
static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *,
struct lpfc_nvmet_rcv_ctx *,
dma_addr_t rspbuf,
uint16_t rspsize);
static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
struct lpfc_nvmet_rcv_ctx *);
static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
struct lpfc_nvmet_rcv_ctx *,
uint32_t, uint16_t);
static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
struct lpfc_nvmet_rcv_ctx *,
uint32_t, uint16_t);
static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *,
struct lpfc_nvmet_rcv_ctx *,
uint32_t, uint16_t);
void
lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)
{
unsigned long iflag;
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6313 NVMET Defer ctx release xri x%x flg x%x\n",
ctxp->oxid, ctxp->flag);
spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
if (ctxp->flag & LPFC_NVMET_CTX_RLS) {
spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock,
iflag);
return;
}
ctxp->flag |= LPFC_NVMET_CTX_RLS;
list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, iflag);
}
/**
* lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response
* @phba: Pointer to HBA context object.
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for NVME LS commands
* The function frees memory resources used for the NVME commands.
**/
static void
lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_nvmet_tgtport *tgtp;
struct nvmefc_tgt_ls_req *rsp;
struct lpfc_nvmet_rcv_ctx *ctxp;
uint32_t status, result;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
ctxp = cmdwqe->context2;
if (ctxp->state != LPFC_NVMET_STE_LS_RSP || ctxp->entry_cnt != 2) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6410 NVMET LS cmpl state mismatch IO x%x: "
"%d %d\n",
ctxp->oxid, ctxp->state, ctxp->entry_cnt);
}
if (!phba->targetport)
goto out;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (status)
atomic_inc(&tgtp->xmt_ls_rsp_error);
else
atomic_inc(&tgtp->xmt_ls_rsp_cmpl);
out:
rsp = &ctxp->ctx.ls_req;
lpfc_nvmeio_data(phba, "NVMET LS CMPL: xri x%x stat x%x result x%x\n",
ctxp->oxid, status, result);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6038 NVMET LS rsp cmpl: %d %d oxid x%x\n",
status, result, ctxp->oxid);
lpfc_nlp_put(cmdwqe->context1);
cmdwqe->context2 = NULL;
cmdwqe->context3 = NULL;
lpfc_sli_release_iocbq(phba, cmdwqe);
rsp->done(rsp);
kfree(ctxp);
}
/**
* lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context
* @phba: HBA buffer is associated with
* @ctxp: context to clean up
* @mp: Buffer to free
*
* Description: Frees the given DMA buffer in the appropriate way given by
* reposting it to its associated RQ so it can be reused.
*
* Notes: Takes phba->hbalock. Can be called with or without other locks held.
*
* Returns: None
**/
void
lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context;
struct lpfc_nvmet_tgtport *tgtp;
struct fc_frame_header *fc_hdr;
struct rqb_dmabuf *nvmebuf;
struct lpfc_nvmet_ctx_info *infop;
uint32_t *payload;
uint32_t size, oxid, sid, rc;
int cpu;
unsigned long iflag;
if (ctxp->txrdy) {
dma_pool_free(phba->txrdy_payload_pool, ctxp->txrdy,
ctxp->txrdy_phys);
ctxp->txrdy = NULL;
ctxp->txrdy_phys = 0;
}
if (ctxp->state == LPFC_NVMET_STE_FREE) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6411 NVMET free, already free IO x%x: %d %d\n",
ctxp->oxid, ctxp->state, ctxp->entry_cnt);
}
ctxp->state = LPFC_NVMET_STE_FREE;
spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
if (phba->sli4_hba.nvmet_io_wait_cnt) {
list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list,
nvmebuf, struct rqb_dmabuf,
hbuf.list);
phba->sli4_hba.nvmet_io_wait_cnt--;
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
iflag);
fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
oxid = be16_to_cpu(fc_hdr->fh_ox_id);
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
payload = (uint32_t *)(nvmebuf->dbuf.virt);
size = nvmebuf->bytes_recv;
sid = sli4_sid_from_fc_hdr(fc_hdr);
ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
ctxp->wqeq = NULL;
ctxp->txrdy = NULL;
ctxp->offset = 0;
ctxp->phba = phba;
ctxp->size = size;
ctxp->oxid = oxid;
ctxp->sid = sid;
ctxp->state = LPFC_NVMET_STE_RCV;
ctxp->entry_cnt = 1;
ctxp->flag = 0;
ctxp->ctxbuf = ctx_buf;
spin_lock_init(&ctxp->ctxlock);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on) {
ctxp->ts_cmd_nvme = ktime_get_ns();
ctxp->ts_isr_cmd = ctxp->ts_cmd_nvme;
ctxp->ts_nvme_data = 0;
ctxp->ts_data_wqput = 0;
ctxp->ts_isr_data = 0;
ctxp->ts_data_nvme = 0;
ctxp->ts_nvme_status = 0;
ctxp->ts_status_wqput = 0;
ctxp->ts_isr_status = 0;
ctxp->ts_status_nvme = 0;
}
#endif
atomic_inc(&tgtp->rcv_fcp_cmd_in);
/*
* The calling sequence should be:
* nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done
* lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
* When we return from nvmet_fc_rcv_fcp_req, all relevant info
* the NVME command / FC header is stored.
* A buffer has already been reposted for this IO, so just free
* the nvmebuf.
*/
rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
payload, size);
/* Process FCP command */
if (rc == 0) {
atomic_inc(&tgtp->rcv_fcp_cmd_out);
nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
return;
}
atomic_inc(&tgtp->rcv_fcp_cmd_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
ctxp->oxid, rc,
atomic_read(&tgtp->rcv_fcp_cmd_in),
atomic_read(&tgtp->rcv_fcp_cmd_out),
atomic_read(&tgtp->xmt_fcp_release));
lpfc_nvmet_defer_release(phba, ctxp);
lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
return;
}
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
/*
* Use the CPU context list, from the MRQ the IO was received on
* (ctxp->idx), to save context structure.
*/
cpu = smp_processor_id();
infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx);
spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag);
list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
infop->nvmet_ctx_list_cnt++;
spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag);
#endif
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
static void
lpfc_nvmet_ktime(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp)
{
uint64_t seg1, seg2, seg3, seg4, seg5;
uint64_t seg6, seg7, seg8, seg9, seg10;
if (!phba->ktime_on)
return;
if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme ||
!ctxp->ts_nvme_data || !ctxp->ts_data_wqput ||
!ctxp->ts_isr_data || !ctxp->ts_data_nvme ||
!ctxp->ts_nvme_status || !ctxp->ts_status_wqput ||
!ctxp->ts_isr_status || !ctxp->ts_status_nvme)
return;
if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme)
return;
if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data)
return;
if (ctxp->ts_nvme_data > ctxp->ts_data_wqput)
return;
if (ctxp->ts_data_wqput > ctxp->ts_isr_data)
return;
if (ctxp->ts_isr_data > ctxp->ts_data_nvme)
return;
if (ctxp->ts_data_nvme > ctxp->ts_nvme_status)
return;
if (ctxp->ts_nvme_status > ctxp->ts_status_wqput)
return;
if (ctxp->ts_status_wqput > ctxp->ts_isr_status)
return;
if (ctxp->ts_isr_status > ctxp->ts_status_nvme)
return;
/*
* Segment 1 - Time from FCP command received by MSI-X ISR
* to FCP command is passed to NVME Layer.
* Segment 2 - Time from FCP command payload handed
* off to NVME Layer to Driver receives a Command op
* from NVME Layer.
* Segment 3 - Time from Driver receives a Command op
* from NVME Layer to Command is put on WQ.
* Segment 4 - Time from Driver WQ put is done
* to MSI-X ISR for Command cmpl.
* Segment 5 - Time from MSI-X ISR for Command cmpl to
* Command cmpl is passed to NVME Layer.
* Segment 6 - Time from Command cmpl is passed to NVME
* Layer to Driver receives a RSP op from NVME Layer.
* Segment 7 - Time from Driver receives a RSP op from
* NVME Layer to WQ put is done on TRSP FCP Status.
* Segment 8 - Time from Driver WQ put is done on TRSP
* FCP Status to MSI-X ISR for TRSP cmpl.
* Segment 9 - Time from MSI-X ISR for TRSP cmpl to
* TRSP cmpl is passed to NVME Layer.
* Segment 10 - Time from FCP command received by
* MSI-X ISR to command is completed on wire.
* (Segments 1 thru 8) for READDATA / WRITEDATA
* (Segments 1 thru 4) for READDATA_RSP
*/
seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd;
seg2 = (ctxp->ts_nvme_data - ctxp->ts_isr_cmd) - seg1;
seg3 = (ctxp->ts_data_wqput - ctxp->ts_isr_cmd) -
seg1 - seg2;
seg4 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3;
seg5 = (ctxp->ts_data_nvme - ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3 - seg4;
/* For auto rsp commands seg6 thru seg10 will be 0 */
if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) {
seg6 = (ctxp->ts_nvme_status -
ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3 - seg4 - seg5;
seg7 = (ctxp->ts_status_wqput -
ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3 -
seg4 - seg5 - seg6;
seg8 = (ctxp->ts_isr_status -
ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3 - seg4 -
seg5 - seg6 - seg7;
seg9 = (ctxp->ts_status_nvme -
ctxp->ts_isr_cmd) -
seg1 - seg2 - seg3 - seg4 -
seg5 - seg6 - seg7 - seg8;
seg10 = (ctxp->ts_isr_status -
ctxp->ts_isr_cmd);
} else {
seg6 = 0;
seg7 = 0;
seg8 = 0;
seg9 = 0;
seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd);
}
phba->ktime_seg1_total += seg1;
if (seg1 < phba->ktime_seg1_min)
phba->ktime_seg1_min = seg1;
else if (seg1 > phba->ktime_seg1_max)
phba->ktime_seg1_max = seg1;
phba->ktime_seg2_total += seg2;
if (seg2 < phba->ktime_seg2_min)
phba->ktime_seg2_min = seg2;
else if (seg2 > phba->ktime_seg2_max)
phba->ktime_seg2_max = seg2;
phba->ktime_seg3_total += seg3;
if (seg3 < phba->ktime_seg3_min)
phba->ktime_seg3_min = seg3;
else if (seg3 > phba->ktime_seg3_max)
phba->ktime_seg3_max = seg3;
phba->ktime_seg4_total += seg4;
if (seg4 < phba->ktime_seg4_min)
phba->ktime_seg4_min = seg4;
else if (seg4 > phba->ktime_seg4_max)
phba->ktime_seg4_max = seg4;
phba->ktime_seg5_total += seg5;
if (seg5 < phba->ktime_seg5_min)
phba->ktime_seg5_min = seg5;
else if (seg5 > phba->ktime_seg5_max)
phba->ktime_seg5_max = seg5;
phba->ktime_data_samples++;
if (!seg6)
goto out;
phba->ktime_seg6_total += seg6;
if (seg6 < phba->ktime_seg6_min)
phba->ktime_seg6_min = seg6;
else if (seg6 > phba->ktime_seg6_max)
phba->ktime_seg6_max = seg6;
phba->ktime_seg7_total += seg7;
if (seg7 < phba->ktime_seg7_min)
phba->ktime_seg7_min = seg7;
else if (seg7 > phba->ktime_seg7_max)
phba->ktime_seg7_max = seg7;
phba->ktime_seg8_total += seg8;
if (seg8 < phba->ktime_seg8_min)
phba->ktime_seg8_min = seg8;
else if (seg8 > phba->ktime_seg8_max)
phba->ktime_seg8_max = seg8;
phba->ktime_seg9_total += seg9;
if (seg9 < phba->ktime_seg9_min)
phba->ktime_seg9_min = seg9;
else if (seg9 > phba->ktime_seg9_max)
phba->ktime_seg9_max = seg9;
out:
phba->ktime_seg10_total += seg10;
if (seg10 < phba->ktime_seg10_min)
phba->ktime_seg10_min = seg10;
else if (seg10 > phba->ktime_seg10_max)
phba->ktime_seg10_max = seg10;
phba->ktime_status_samples++;
}
#endif
/**
* lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response
* @phba: Pointer to HBA context object.
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for NVME FCP commands
* The function frees memory resources used for the NVME commands.
**/
static void
lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_nvmet_tgtport *tgtp;
struct nvmefc_tgt_fcp_req *rsp;
struct lpfc_nvmet_rcv_ctx *ctxp;
uint32_t status, result, op, start_clean;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
uint32_t id;
#endif
ctxp = cmdwqe->context2;
ctxp->flag &= ~LPFC_NVMET_IO_INP;
rsp = &ctxp->ctx.fcp_req;
op = rsp->op;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
if (phba->targetport)
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
else
tgtp = NULL;
lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n",
ctxp->oxid, op, status);
if (status) {
rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
rsp->transferred_length = 0;
if (tgtp)
atomic_inc(&tgtp->xmt_fcp_rsp_error);
/* pick up SLI4 exhange busy condition */
if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
ctxp->flag |= LPFC_NVMET_XBUSY;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6315 IO Cmpl XBUSY: xri x%x: %x/%x\n",
ctxp->oxid, status, result);
} else {
ctxp->flag &= ~LPFC_NVMET_XBUSY;
}
} else {
rsp->fcp_error = NVME_SC_SUCCESS;
if (op == NVMET_FCOP_RSP)
rsp->transferred_length = rsp->rsplen;
else
rsp->transferred_length = rsp->transfer_length;
if (tgtp)
atomic_inc(&tgtp->xmt_fcp_rsp_cmpl);
}
if ((op == NVMET_FCOP_READDATA_RSP) ||
(op == NVMET_FCOP_RSP)) {
/* Sanity check */
ctxp->state = LPFC_NVMET_STE_DONE;
ctxp->entry_cnt++;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on) {
if (rsp->op == NVMET_FCOP_READDATA_RSP) {
ctxp->ts_isr_data =
cmdwqe->isr_timestamp;
ctxp->ts_data_nvme =
ktime_get_ns();
ctxp->ts_nvme_status =
ctxp->ts_data_nvme;
ctxp->ts_status_wqput =
ctxp->ts_data_nvme;
ctxp->ts_isr_status =
ctxp->ts_data_nvme;
ctxp->ts_status_nvme =
ctxp->ts_data_nvme;
} else {
ctxp->ts_isr_status =
cmdwqe->isr_timestamp;
ctxp->ts_status_nvme =
ktime_get_ns();
}
}
if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
id = smp_processor_id();
if (ctxp->cpu != id)
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6703 CPU Check cmpl: "
"cpu %d expect %d\n",
id, ctxp->cpu);
if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
phba->cpucheck_cmpl_io[id]++;
}
#endif
rsp->done(rsp);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on)
lpfc_nvmet_ktime(phba, ctxp);
#endif
/* lpfc_nvmet_xmt_fcp_release() will recycle the context */
} else {
ctxp->entry_cnt++;
start_clean = offsetof(struct lpfc_iocbq, iocb_flag);
memset(((char *)cmdwqe) + start_clean, 0,
(sizeof(struct lpfc_iocbq) - start_clean));
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on) {
ctxp->ts_isr_data = cmdwqe->isr_timestamp;
ctxp->ts_data_nvme = ktime_get_ns();
}
if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
id = smp_processor_id();
if (ctxp->cpu != id)
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6704 CPU Check cmdcmpl: "
"cpu %d expect %d\n",
id, ctxp->cpu);
if (ctxp->cpu < LPFC_CHECK_CPU_CNT)
phba->cpucheck_ccmpl_io[id]++;
}
#endif
rsp->done(rsp);
}
}
static int
lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_ls_req *rsp)
{
struct lpfc_nvmet_rcv_ctx *ctxp =
container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req);
struct lpfc_hba *phba = ctxp->phba;
struct hbq_dmabuf *nvmebuf =
(struct hbq_dmabuf *)ctxp->rqb_buffer;
struct lpfc_iocbq *nvmewqeq;
struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
struct lpfc_dmabuf dmabuf;
struct ulp_bde64 bpl;
int rc;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6023 NVMET LS rsp oxid x%x\n", ctxp->oxid);
if ((ctxp->state != LPFC_NVMET_STE_LS_RCV) ||
(ctxp->entry_cnt != 1)) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6412 NVMET LS rsp state mismatch "
"oxid x%x: %d %d\n",
ctxp->oxid, ctxp->state, ctxp->entry_cnt);
}
ctxp->state = LPFC_NVMET_STE_LS_RSP;
ctxp->entry_cnt++;
nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma,
rsp->rsplen);
if (nvmewqeq == NULL) {
atomic_inc(&nvmep->xmt_ls_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6150 LS Drop IO x%x: Prep\n",
ctxp->oxid);
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&nvmep->xmt_ls_abort);
lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
ctxp->sid, ctxp->oxid);
return -ENOMEM;
}
/* Save numBdes for bpl2sgl */
nvmewqeq->rsvd2 = 1;
nvmewqeq->hba_wqidx = 0;
nvmewqeq->context3 = &dmabuf;
dmabuf.virt = &bpl;
bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
bpl.tus.f.bdeSize = rsp->rsplen;
bpl.tus.f.bdeFlags = 0;
bpl.tus.w = le32_to_cpu(bpl.tus.w);
nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp;
nvmewqeq->iocb_cmpl = NULL;
nvmewqeq->context2 = ctxp;
lpfc_nvmeio_data(phba, "NVMET LS RESP: xri x%x wqidx x%x len x%x\n",
ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen);
rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, nvmewqeq);
if (rc == WQE_SUCCESS) {
/*
* Okay to repost buffer here, but wait till cmpl
* before freeing ctxp and iocbq.
*/
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
ctxp->rqb_buffer = 0;
atomic_inc(&nvmep->xmt_ls_rsp);
return 0;
}
/* Give back resources */
atomic_inc(&nvmep->xmt_ls_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6151 LS Drop IO x%x: Issue %d\n",
ctxp->oxid, rc);
lpfc_nlp_put(nvmewqeq->context1);
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&nvmep->xmt_ls_abort);
lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
return -ENXIO;
}
static int
lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *rsp)
{
struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
struct lpfc_nvmet_rcv_ctx *ctxp =
container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
struct lpfc_hba *phba = ctxp->phba;
struct lpfc_iocbq *nvmewqeq;
int rc;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on) {
if (rsp->op == NVMET_FCOP_RSP)
ctxp->ts_nvme_status = ktime_get_ns();
else
ctxp->ts_nvme_data = ktime_get_ns();
}
if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
int id = smp_processor_id();
ctxp->cpu = id;
if (id < LPFC_CHECK_CPU_CNT)
phba->cpucheck_xmt_io[id]++;
if (rsp->hwqid != id) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6705 CPU Check OP: "
"cpu %d expect %d\n",
id, rsp->hwqid);
ctxp->cpu = rsp->hwqid;
}
}
#endif
/* Sanity check */
if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) ||
(ctxp->state == LPFC_NVMET_STE_ABORT)) {
atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6102 IO xri x%x aborted\n",
ctxp->oxid);
rc = -ENXIO;
goto aerr;
}
nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp);
if (nvmewqeq == NULL) {
atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6152 FCP Drop IO x%x: Prep\n",
ctxp->oxid);
rc = -ENXIO;
goto aerr;
}
nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
nvmewqeq->iocb_cmpl = NULL;
nvmewqeq->context2 = ctxp;
nvmewqeq->iocb_flag |= LPFC_IO_NVMET;
ctxp->wqeq->hba_wqidx = rsp->hwqid;
lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
ctxp->oxid, rsp->op, rsp->rsplen);
ctxp->flag |= LPFC_NVMET_IO_INP;
rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, nvmewqeq);
if (rc == WQE_SUCCESS) {
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (!phba->ktime_on)
return 0;
if (rsp->op == NVMET_FCOP_RSP)
ctxp->ts_status_wqput = ktime_get_ns();
else
ctxp->ts_data_wqput = ktime_get_ns();
#endif
return 0;
}
/* Give back resources */
atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6153 FCP Drop IO x%x: Issue: %d\n",
ctxp->oxid, rc);
ctxp->wqeq->hba_wqidx = 0;
nvmewqeq->context2 = NULL;
nvmewqeq->context3 = NULL;
rc = -EBUSY;
aerr:
return rc;
}
static void
lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
{
struct lpfc_nvmet_tgtport *tport = targetport->private;
/* release any threads waiting for the unreg to complete */
complete(&tport->tport_unreg_done);
}
static void
lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *req)
{
struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
struct lpfc_nvmet_rcv_ctx *ctxp =
container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
struct lpfc_hba *phba = ctxp->phba;
unsigned long flags;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6103 NVMET Abort op: oxri x%x flg x%x ste %d\n",
ctxp->oxid, ctxp->flag, ctxp->state);
lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n",
ctxp->oxid, ctxp->flag, ctxp->state);
atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
spin_lock_irqsave(&ctxp->ctxlock, flags);
/* Since iaab/iaar are NOT set, we need to check
* if the firmware is in process of aborting IO
*/
if (ctxp->flag & LPFC_NVMET_XBUSY) {
spin_unlock_irqrestore(&ctxp->ctxlock, flags);
return;
}
ctxp->flag |= LPFC_NVMET_ABORT_OP;
/* An state of LPFC_NVMET_STE_RCV means we have just received
* the NVME command and have not started processing it.
* (by issuing any IO WQEs on this exchange yet)
*/
if (ctxp->state == LPFC_NVMET_STE_RCV)
lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
ctxp->oxid);
else
lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
ctxp->oxid);
spin_unlock_irqrestore(&ctxp->ctxlock, flags);
}
static void
lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *rsp)
{
struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
struct lpfc_nvmet_rcv_ctx *ctxp =
container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
struct lpfc_hba *phba = ctxp->phba;
unsigned long flags;
bool aborting = false;
if (ctxp->state != LPFC_NVMET_STE_DONE &&
ctxp->state != LPFC_NVMET_STE_ABORT) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6413 NVMET release bad state %d %d oxid x%x\n",
ctxp->state, ctxp->entry_cnt, ctxp->oxid);
}
spin_lock_irqsave(&ctxp->ctxlock, flags);
if ((ctxp->flag & LPFC_NVMET_ABORT_OP) ||
(ctxp->flag & LPFC_NVMET_XBUSY)) {
aborting = true;
/* let the abort path do the real release */
lpfc_nvmet_defer_release(phba, ctxp);
}
spin_unlock_irqrestore(&ctxp->ctxlock, flags);
lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid,
ctxp->state, aborting);
atomic_inc(&lpfc_nvmep->xmt_fcp_release);
if (aborting)
return;
lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
}
static void
lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *rsp)
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_nvmet_rcv_ctx *ctxp =
container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
struct lpfc_hba *phba = ctxp->phba;
lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n",
ctxp->oxid, ctxp->size, smp_processor_id());
tgtp = phba->targetport->private;
atomic_inc(&tgtp->rcv_fcp_cmd_defer);
lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
}
static struct nvmet_fc_target_template lpfc_tgttemplate = {
.targetport_delete = lpfc_nvmet_targetport_delete,
.xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp,
.fcp_op = lpfc_nvmet_xmt_fcp_op,
.fcp_abort = lpfc_nvmet_xmt_fcp_abort,
.fcp_req_release = lpfc_nvmet_xmt_fcp_release,
.defer_rcv = lpfc_nvmet_defer_rcv,
.max_hw_queues = 1,
.max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
.max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
.dma_boundary = 0xFFFFFFFF,
/* optional features */
.target_features = 0,
/* sizes of additional private data for data structures */
.target_priv_sz = sizeof(struct lpfc_nvmet_tgtport),
};
static void
__lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba,
struct lpfc_nvmet_ctx_info *infop)
{
struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf;
unsigned long flags;
spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags);
list_for_each_entry_safe(ctx_buf, next_ctx_buf,
&infop->nvmet_ctx_list, list) {
spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
list_del_init(&ctx_buf->list);
spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
__lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag);
ctx_buf->sglq->state = SGL_FREED;
ctx_buf->sglq->ndlp = NULL;
spin_lock(&phba->sli4_hba.sgl_list_lock);
list_add_tail(&ctx_buf->sglq->list,
&phba->sli4_hba.lpfc_nvmet_sgl_list);
spin_unlock(&phba->sli4_hba.sgl_list_lock);
lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
kfree(ctx_buf->context);
}
spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags);
}
static void
lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba)
{
struct lpfc_nvmet_ctx_info *infop;
int i, j;
/* The first context list, MRQ 0 CPU 0 */
infop = phba->sli4_hba.nvmet_ctx_info;
if (!infop)
return;
/* Cycle the the entire CPU context list for every MRQ */
for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
for (j = 0; j < phba->sli4_hba.num_present_cpu; j++) {
__lpfc_nvmet_clean_io_for_cpu(phba, infop);
infop++; /* next */
}
}
kfree(phba->sli4_hba.nvmet_ctx_info);
phba->sli4_hba.nvmet_ctx_info = NULL;
}
static int
lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
{
struct lpfc_nvmet_ctxbuf *ctx_buf;
struct lpfc_iocbq *nvmewqe;
union lpfc_wqe128 *wqe;
struct lpfc_nvmet_ctx_info *last_infop;
struct lpfc_nvmet_ctx_info *infop;
int i, j, idx;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
"6403 Allocate NVMET resources for %d XRIs\n",
phba->sli4_hba.nvmet_xri_cnt);
phba->sli4_hba.nvmet_ctx_info = kcalloc(
phba->sli4_hba.num_present_cpu * phba->cfg_nvmet_mrq,
sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL);
if (!phba->sli4_hba.nvmet_ctx_info) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"6419 Failed allocate memory for "
"nvmet context lists\n");
return -ENOMEM;
}
/*
* Assuming X CPUs in the system, and Y MRQs, allocate some
* lpfc_nvmet_ctx_info structures as follows:
*
* cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0
* cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1
* ...
* cpuX/mrqY cpuX/mrqY ... cpuX/mrqY
*
* Each line represents a MRQ "silo" containing an entry for
* every CPU.
*
* MRQ X is initially assumed to be associated with CPU X, thus
* contexts are initially distributed across all MRQs using
* the MRQ index (N) as follows cpuN/mrqN. When contexts are
* freed, the are freed to the MRQ silo based on the CPU number
* of the IO completion. Thus a context that was allocated for MRQ A
* whose IO completed on CPU B will be freed to cpuB/mrqA.
*/
infop = phba->sli4_hba.nvmet_ctx_info;
for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
INIT_LIST_HEAD(&infop->nvmet_ctx_list);
spin_lock_init(&infop->nvmet_ctx_list_lock);
infop->nvmet_ctx_list_cnt = 0;
infop++;
}
}
/*
* Setup the next CPU context info ptr for each MRQ.
* MRQ 0 will cycle thru CPUs 0 - X separately from
* MRQ 1 cycling thru CPUs 0 - X, and so on.
*/
for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
last_infop = lpfc_get_ctx_list(phba, 0, j);
for (i = phba->sli4_hba.num_present_cpu - 1; i >= 0; i--) {
infop = lpfc_get_ctx_list(phba, i, j);
infop->nvmet_ctx_next_cpu = last_infop;
last_infop = infop;
}
}
/* For all nvmet xris, allocate resources needed to process a
* received command on a per xri basis.
*/
idx = 0;
for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) {
ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL);
if (!ctx_buf) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6404 Ran out of memory for NVMET\n");
return -ENOMEM;
}
ctx_buf->context = kzalloc(sizeof(*ctx_buf->context),
GFP_KERNEL);
if (!ctx_buf->context) {
kfree(ctx_buf);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6405 Ran out of NVMET "
"context memory\n");
return -ENOMEM;
}
ctx_buf->context->ctxbuf = ctx_buf;
ctx_buf->context->state = LPFC_NVMET_STE_FREE;
ctx_buf->iocbq = lpfc_sli_get_iocbq(phba);
if (!ctx_buf->iocbq) {
kfree(ctx_buf->context);
kfree(ctx_buf);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6406 Ran out of NVMET iocb/WQEs\n");
return -ENOMEM;
}
ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET;
nvmewqe = ctx_buf->iocbq;
wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
/* Initialize WQE */
memset(wqe, 0, sizeof(union lpfc_wqe));
/* Word 7 */
bf_set(wqe_ct, &wqe->generic.wqe_com, SLI4_CT_RPI);
bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3);
/* Word 10 */
bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0);
bf_set(wqe_qosd, &wqe->generic.wqe_com, 0);
ctx_buf->iocbq->context1 = NULL;
spin_lock(&phba->sli4_hba.sgl_list_lock);
ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq);
spin_unlock(&phba->sli4_hba.sgl_list_lock);
if (!ctx_buf->sglq) {
lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
kfree(ctx_buf->context);
kfree(ctx_buf);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6407 Ran out of NVMET XRIs\n");
return -ENOMEM;
}
/*
* Add ctx to MRQidx context list. Our initial assumption
* is MRQidx will be associated with CPUidx. This association
* can change on the fly.
*/
infop = lpfc_get_ctx_list(phba, idx, idx);
spin_lock(&infop->nvmet_ctx_list_lock);
list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
infop->nvmet_ctx_list_cnt++;
spin_unlock(&infop->nvmet_ctx_list_lock);
/* Spread ctx structures evenly across all MRQs */
idx++;
if (idx >= phba->cfg_nvmet_mrq)
idx = 0;
}
infop = phba->sli4_hba.nvmet_ctx_info;
for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
"6408 TOTAL NVMET ctx for CPU %d "
"MRQ %d: cnt %d nextcpu %p\n",
i, j, infop->nvmet_ctx_list_cnt,
infop->nvmet_ctx_next_cpu);
infop++;
}
}
return 0;
}
int
lpfc_nvmet_create_targetport(struct lpfc_hba *phba)
{
struct lpfc_vport *vport = phba->pport;
struct lpfc_nvmet_tgtport *tgtp;
struct nvmet_fc_port_info pinfo;
int error;
if (phba->targetport)
return 0;
error = lpfc_nvmet_setup_io_context(phba);
if (error)
return error;
memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info));
pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
pinfo.port_id = vport->fc_myDID;
/* Limit to LPFC_MAX_NVME_SEG_CNT.
* For now need + 1 to get around NVME transport logic.
*/
if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
"6400 Reducing sg segment cnt to %d\n",
LPFC_MAX_NVME_SEG_CNT);
phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
} else {
phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
}
lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel;
lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP |
NVMET_FCTGTFEAT_CMD_IN_ISR |
NVMET_FCTGTFEAT_OPDONE_IN_ISR;
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
&phba->pcidev->dev,
&phba->targetport);
#else
error = -ENOENT;
#endif
if (error) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
"6025 Cannot register NVME targetport "
"x%x\n", error);
phba->targetport = NULL;
lpfc_nvmet_cleanup_io_context(phba);
} else {
tgtp = (struct lpfc_nvmet_tgtport *)
phba->targetport->private;
tgtp->phba = phba;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6026 Registered NVME "
"targetport: %p, private %p "
"portnm %llx nodenm %llx\n",
phba->targetport, tgtp,
pinfo.port_name, pinfo.node_name);
atomic_set(&tgtp->rcv_ls_req_in, 0);
atomic_set(&tgtp->rcv_ls_req_out, 0);
atomic_set(&tgtp->rcv_ls_req_drop, 0);
atomic_set(&tgtp->xmt_ls_abort, 0);
atomic_set(&tgtp->xmt_ls_abort_cmpl, 0);
atomic_set(&tgtp->xmt_ls_rsp, 0);
atomic_set(&tgtp->xmt_ls_drop, 0);
atomic_set(&tgtp->xmt_ls_rsp_error, 0);
atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0);
atomic_set(&tgtp->rcv_fcp_cmd_in, 0);
atomic_set(&tgtp->rcv_fcp_cmd_out, 0);
atomic_set(&tgtp->rcv_fcp_cmd_drop, 0);
atomic_set(&tgtp->xmt_fcp_drop, 0);
atomic_set(&tgtp->xmt_fcp_read_rsp, 0);
atomic_set(&tgtp->xmt_fcp_read, 0);
atomic_set(&tgtp->xmt_fcp_write, 0);
atomic_set(&tgtp->xmt_fcp_rsp, 0);
atomic_set(&tgtp->xmt_fcp_release, 0);
atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
atomic_set(&tgtp->xmt_fcp_abort, 0);
atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0);
atomic_set(&tgtp->xmt_abort_unsol, 0);
atomic_set(&tgtp->xmt_abort_sol, 0);
atomic_set(&tgtp->xmt_abort_rsp, 0);
atomic_set(&tgtp->xmt_abort_rsp_error, 0);
}
return error;
}
int
lpfc_nvmet_update_targetport(struct lpfc_hba *phba)
{
struct lpfc_vport *vport = phba->pport;
if (!phba->targetport)
return 0;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
"6007 Update NVMET port %p did x%x\n",
phba->targetport, vport->fc_myDID);
phba->targetport->port_id = vport->fc_myDID;
return 0;
}
/**
* lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort
* @phba: pointer to lpfc hba data structure.
* @axri: pointer to the nvmet xri abort wcqe structure.
*
* This routine is invoked by the worker thread to process a SLI4 fast-path
* NVMET aborted xri.
**/
void
lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
struct lpfc_nodelist *ndlp;
unsigned long iflag = 0;
int rrq_empty = 0;
bool released = false;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6317 XB aborted xri x%x rxid x%x\n", xri, rxid);
if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
return;
spin_lock_irqsave(&phba->hbalock, iflag);
spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
list_for_each_entry_safe(ctxp, next_ctxp,
&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
list) {
if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
continue;
/* Check if we already received a free context call
* and we have completed processing an abort situation.
*/
if (ctxp->flag & LPFC_NVMET_CTX_RLS &&
!(ctxp->flag & LPFC_NVMET_ABORT_OP)) {
list_del(&ctxp->list);
released = true;
}
ctxp->flag &= ~LPFC_NVMET_XBUSY;
spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
rrq_empty = list_empty(&phba->active_rrq_list);
spin_unlock_irqrestore(&phba->hbalock, iflag);
ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
(ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
lpfc_set_rrq_active(phba, ndlp,
ctxp->ctxbuf->sglq->sli4_lxritag,
rxid, 1);
lpfc_sli4_abts_err_handler(phba, ndlp, axri);
}
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6318 XB aborted oxid %x flg x%x (%x)\n",
ctxp->oxid, ctxp->flag, released);
if (released)
lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
if (rrq_empty)
lpfc_worker_wake_up(phba);
return;
}
spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
}
int
lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
struct fc_frame_header *fc_hdr)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
struct lpfc_hba *phba = vport->phba;
struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
struct nvmefc_tgt_fcp_req *rsp;
uint16_t xri;
unsigned long iflag = 0;
xri = be16_to_cpu(fc_hdr->fh_ox_id);
spin_lock_irqsave(&phba->hbalock, iflag);
spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
list_for_each_entry_safe(ctxp, next_ctxp,
&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
list) {
if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
continue;
spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
spin_lock_irqsave(&ctxp->ctxlock, iflag);
ctxp->flag |= LPFC_NVMET_ABTS_RCV;
spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
lpfc_nvmeio_data(phba,
"NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
xri, smp_processor_id(), 0);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
rsp = &ctxp->ctx.fcp_req;
nvmet_fc_rcv_fcp_abort(phba->targetport, rsp);
/* Respond with BA_ACC accordingly */
lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
return 0;
}
spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
spin_unlock_irqrestore(&phba->hbalock, iflag);
lpfc_nvmeio_data(phba, "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
xri, smp_processor_id(), 1);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6320 NVMET Rcv ABTS:rjt xri x%x\n", xri);
/* Respond with BA_RJT accordingly */
lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0);
#endif
return 0;
}
void
lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
struct lpfc_nvmet_tgtport *tgtp;
if (phba->nvmet_support == 0)
return;
if (phba->targetport) {
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
init_completion(&tgtp->tport_unreg_done);
nvmet_fc_unregister_targetport(phba->targetport);
wait_for_completion_timeout(&tgtp->tport_unreg_done, 5);
lpfc_nvmet_cleanup_io_context(phba);
}
phba->targetport = NULL;
#endif
}
/**
* lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @nvmebuf: pointer to lpfc nvme command HBQ data structure.
*
* This routine is used for processing the WQE associated with a unsolicited
* event. It first determines whether there is an existing ndlp that matches
* the DID from the unsolicited WQE. If not, it will create a new one with
* the DID from the unsolicited WQE. The ELS command from the unsolicited
* WQE is then used to invoke the proper routine and to set up proper state
* of the discovery state machine.
**/
static void
lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct hbq_dmabuf *nvmebuf)
{
#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
struct lpfc_nvmet_tgtport *tgtp;
struct fc_frame_header *fc_hdr;
struct lpfc_nvmet_rcv_ctx *ctxp;
uint32_t *payload;
uint32_t size, oxid, sid, rc;
if (!nvmebuf || !phba->targetport) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6154 LS Drop IO\n");
oxid = 0;
size = 0;
sid = 0;
ctxp = NULL;
goto dropit;
}
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
payload = (uint32_t *)(nvmebuf->dbuf.virt);
fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
oxid = be16_to_cpu(fc_hdr->fh_ox_id);
sid = sli4_sid_from_fc_hdr(fc_hdr);
ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC);
if (ctxp == NULL) {
atomic_inc(&tgtp->rcv_ls_req_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6155 LS Drop IO x%x: Alloc\n",
oxid);
dropit:
lpfc_nvmeio_data(phba, "NVMET LS DROP: "
"xri x%x sz %d from %06x\n",
oxid, size, sid);
if (nvmebuf)
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
return;
}
ctxp->phba = phba;
ctxp->size = size;
ctxp->oxid = oxid;
ctxp->sid = sid;
ctxp->wqeq = NULL;
ctxp->state = LPFC_NVMET_STE_LS_RCV;
ctxp->entry_cnt = 1;
ctxp->rqb_buffer = (void *)nvmebuf;
lpfc_nvmeio_data(phba, "NVMET LS RCV: xri x%x sz %d from %06x\n",
oxid, size, sid);
/*
* The calling sequence should be:
* nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done
* lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp.
*/
atomic_inc(&tgtp->rcv_ls_req_in);
rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req,
payload, size);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x "
"%08x %08x %08x\n", size, rc,
*payload, *(payload+1), *(payload+2),
*(payload+3), *(payload+4), *(payload+5));
if (rc == 0) {
atomic_inc(&tgtp->rcv_ls_req_out);
return;
}
lpfc_nvmeio_data(phba, "NVMET LS DROP: xri x%x sz %d from %06x\n",
oxid, size, sid);
atomic_inc(&tgtp->rcv_ls_req_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n",
ctxp->oxid, rc);
/* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
if (nvmebuf)
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&tgtp->xmt_ls_abort);
lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
#endif
}
static struct lpfc_nvmet_ctxbuf *
lpfc_nvmet_replenish_context(struct lpfc_hba *phba,
struct lpfc_nvmet_ctx_info *current_infop)
{
struct lpfc_nvmet_ctxbuf *ctx_buf = NULL;
struct lpfc_nvmet_ctx_info *get_infop;
int i;
/*
* The current_infop for the MRQ a NVME command IU was received
* on is empty. Our goal is to replenish this MRQs context
* list from a another CPUs.
*
* First we need to pick a context list to start looking on.
* nvmet_ctx_start_cpu has available context the last time
* we needed to replenish this CPU where nvmet_ctx_next_cpu
* is just the next sequential CPU for this MRQ.
*/
if (current_infop->nvmet_ctx_start_cpu)
get_infop = current_infop->nvmet_ctx_start_cpu;
else
get_infop = current_infop->nvmet_ctx_next_cpu;
for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
if (get_infop == current_infop) {
get_infop = get_infop->nvmet_ctx_next_cpu;
continue;
}
spin_lock(&get_infop->nvmet_ctx_list_lock);
/* Just take the entire context list, if there are any */
if (get_infop->nvmet_ctx_list_cnt) {
list_splice_init(&get_infop->nvmet_ctx_list,
&current_infop->nvmet_ctx_list);
current_infop->nvmet_ctx_list_cnt =
get_infop->nvmet_ctx_list_cnt - 1;
get_infop->nvmet_ctx_list_cnt = 0;
spin_unlock(&get_infop->nvmet_ctx_list_lock);
current_infop->nvmet_ctx_start_cpu = get_infop;
list_remove_head(&current_infop->nvmet_ctx_list,
ctx_buf, struct lpfc_nvmet_ctxbuf,
list);
return ctx_buf;
}
/* Otherwise, move on to the next CPU for this MRQ */
spin_unlock(&get_infop->nvmet_ctx_list_lock);
get_infop = get_infop->nvmet_ctx_next_cpu;
}
/* Nothing found, all contexts for the MRQ are in-flight */
return NULL;
}
/**
* lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
* @phba: pointer to lpfc hba data structure.
* @idx: relative index of MRQ vector
* @nvmebuf: pointer to lpfc nvme command HBQ data structure.
*
* This routine is used for processing the WQE associated with a unsolicited
* event. It first determines whether there is an existing ndlp that matches
* the DID from the unsolicited WQE. If not, it will create a new one with
* the DID from the unsolicited WQE. The ELS command from the unsolicited
* WQE is then used to invoke the proper routine and to set up proper state
* of the discovery state machine.
**/
static void
lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
uint32_t idx,
struct rqb_dmabuf *nvmebuf,
uint64_t isr_timestamp)
{
struct lpfc_nvmet_rcv_ctx *ctxp;
struct lpfc_nvmet_tgtport *tgtp;
struct fc_frame_header *fc_hdr;
struct lpfc_nvmet_ctxbuf *ctx_buf;
struct lpfc_nvmet_ctx_info *current_infop;
uint32_t *payload;
uint32_t size, oxid, sid, rc, qno;
unsigned long iflag;
int current_cpu;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
uint32_t id;
#endif
if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
return;
ctx_buf = NULL;
if (!nvmebuf || !phba->targetport) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6157 NVMET FCP Drop IO\n");
oxid = 0;
size = 0;
sid = 0;
ctxp = NULL;
goto dropit;
}
/*
* Get a pointer to the context list for this MRQ based on
* the CPU this MRQ IRQ is associated with. If the CPU association
* changes from our initial assumption, the context list could
* be empty, thus it would need to be replenished with the
* context list from another CPU for this MRQ.
*/
current_cpu = smp_processor_id();
current_infop = lpfc_get_ctx_list(phba, current_cpu, idx);
spin_lock_irqsave(&current_infop->nvmet_ctx_list_lock, iflag);
if (current_infop->nvmet_ctx_list_cnt) {
list_remove_head(&current_infop->nvmet_ctx_list,
ctx_buf, struct lpfc_nvmet_ctxbuf, list);
current_infop->nvmet_ctx_list_cnt--;
} else {
ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop);
}
spin_unlock_irqrestore(&current_infop->nvmet_ctx_list_lock, iflag);
fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
oxid = be16_to_cpu(fc_hdr->fh_ox_id);
size = nvmebuf->bytes_recv;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) {
id = smp_processor_id();
if (id < LPFC_CHECK_CPU_CNT)
phba->cpucheck_rcv_io[id]++;
}
#endif
lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n",
oxid, size, smp_processor_id());
if (!ctx_buf) {
/* Queue this NVME IO to process later */
spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
list_add_tail(&nvmebuf->hbuf.list,
&phba->sli4_hba.lpfc_nvmet_io_wait_list);
phba->sli4_hba.nvmet_io_wait_cnt++;
phba->sli4_hba.nvmet_io_wait_total++;
spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
iflag);
/* Post a brand new DMA buffer to RQ */
qno = nvmebuf->idx;
lpfc_post_rq_buffer(
phba, phba->sli4_hba.nvmet_mrq_hdr[qno],
phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
return;
}
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
payload = (uint32_t *)(nvmebuf->dbuf.virt);
sid = sli4_sid_from_fc_hdr(fc_hdr);
ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context;
if (ctxp->state != LPFC_NVMET_STE_FREE) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6414 NVMET Context corrupt %d %d oxid x%x\n",
ctxp->state, ctxp->entry_cnt, ctxp->oxid);
}
ctxp->wqeq = NULL;
ctxp->txrdy = NULL;
ctxp->offset = 0;
ctxp->phba = phba;
ctxp->size = size;
ctxp->oxid = oxid;
ctxp->sid = sid;
ctxp->idx = idx;
ctxp->state = LPFC_NVMET_STE_RCV;
ctxp->entry_cnt = 1;
ctxp->flag = 0;
ctxp->ctxbuf = ctx_buf;
spin_lock_init(&ctxp->ctxlock);
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
if (phba->ktime_on) {
ctxp->ts_isr_cmd = isr_timestamp;
ctxp->ts_cmd_nvme = ktime_get_ns();
ctxp->ts_nvme_data = 0;
ctxp->ts_data_wqput = 0;
ctxp->ts_isr_data = 0;
ctxp->ts_data_nvme = 0;
ctxp->ts_nvme_status = 0;
ctxp->ts_status_wqput = 0;
ctxp->ts_isr_status = 0;
ctxp->ts_status_nvme = 0;
}
#endif
atomic_inc(&tgtp->rcv_fcp_cmd_in);
/*
* The calling sequence should be:
* nvmet_fc_rcv_fcp_req -> lpfc_nvmet_xmt_fcp_op/cmp -> req->done
* lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
* When we return from nvmet_fc_rcv_fcp_req, all relevant info in
* the NVME command / FC header is stored, so we are free to repost
* the buffer.
*/
rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
payload, size);
/* Process FCP command */
if (rc == 0) {
atomic_inc(&tgtp->rcv_fcp_cmd_out);
lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
return;
}
/* Processing of FCP command is deferred */
if (rc == -EOVERFLOW) {
lpfc_nvmeio_data(phba,
"NVMET RCV BUSY: xri x%x sz %d from %06x\n",
oxid, size, sid);
/* defer reposting rcv buffer till .defer_rcv callback */
ctxp->rqb_buffer = nvmebuf;
atomic_inc(&tgtp->rcv_fcp_cmd_out);
return;
}
atomic_inc(&tgtp->rcv_fcp_cmd_drop);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6159 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
ctxp->oxid, rc,
atomic_read(&tgtp->rcv_fcp_cmd_in),
atomic_read(&tgtp->rcv_fcp_cmd_out),
atomic_read(&tgtp->xmt_fcp_release));
dropit:
lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n",
oxid, size, sid);
if (oxid) {
lpfc_nvmet_defer_release(phba, ctxp);
lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
return;
}
if (ctx_buf)
lpfc_nvmet_ctxbuf_post(phba, ctx_buf);
if (nvmebuf)
lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */
}
/**
* lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @nvmebuf: pointer to received nvme data structure.
*
* This routine is used to process an unsolicited event received from a SLI
* (Service Level Interface) ring. The actual processing of the data buffer
* associated with the unsolicited event is done by invoking the routine
* lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the
* SLI RQ on which the unsolicited event was received.
**/
void
lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
struct lpfc_dmabuf *d_buf;
struct hbq_dmabuf *nvmebuf;
d_buf = piocb->context2;
nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
if (phba->nvmet_support == 0) {
lpfc_in_buf_free(phba, &nvmebuf->dbuf);
return;
}
lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf);
}
/**
* lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport
* @phba: pointer to lpfc hba data structure.
* @idx: relative index of MRQ vector
* @nvmebuf: pointer to received nvme data structure.
*
* This routine is used to process an unsolicited event received from a SLI
* (Service Level Interface) ring. The actual processing of the data buffer
* associated with the unsolicited event is done by invoking the routine
* lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the
* SLI RQ on which the unsolicited event was received.
**/
void
lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba,
uint32_t idx,
struct rqb_dmabuf *nvmebuf,
uint64_t isr_timestamp)
{
if (phba->nvmet_support == 0) {
lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
return;
}
lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf,
isr_timestamp);
}
/**
* lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure
* @phba: pointer to a host N_Port data structure.
* @ctxp: Context info for NVME LS Request
* @rspbuf: DMA buffer of NVME command.
* @rspsize: size of the NVME command.
*
* This routine is used for allocating a lpfc-WQE data structure from
* the driver lpfc-WQE free-list and prepare the WQE with the parameters
* passed into the routine for discovery state machine to issue an Extended
* Link Service (NVME) commands. It is a generic lpfc-WQE allocation
* and preparation routine that is used by all the discovery state machine
* routines and the NVME command-specific fields will be later set up by
* the individual discovery machine routines after calling this routine
* allocating and preparing a generic WQE data structure. It fills in the
* Buffer Descriptor Entries (BDEs), allocates buffers for both command
* payload and response payload (if expected). The reference count on the
* ndlp is incremented by 1 and the reference to the ndlp is put into
* context1 of the WQE data structure for this WQE to hold the ndlp
* reference for the command's callback function to access later.
*
* Return code
* Pointer to the newly allocated/prepared nvme wqe data structure
* NULL - when nvme wqe data structure allocation/preparation failed
**/
static struct lpfc_iocbq *
lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp,
dma_addr_t rspbuf, uint16_t rspsize)
{
struct lpfc_nodelist *ndlp;
struct lpfc_iocbq *nvmewqe;
union lpfc_wqe *wqe;
if (!lpfc_is_link_up(phba)) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
"6104 NVMET prep LS wqe: link err: "
"NPORT x%x oxid:x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
return NULL;
}
/* Allocate buffer for command wqe */
nvmewqe = lpfc_sli_get_iocbq(phba);
if (nvmewqe == NULL) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
"6105 NVMET prep LS wqe: No WQE: "
"NPORT x%x oxid x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
return NULL;
}
ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
"6106 NVMET prep LS wqe: No ndlp: "
"NPORT x%x oxid x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
goto nvme_wqe_free_wqeq_exit;
}
ctxp->wqeq = nvmewqe;
/* prevent preparing wqe with NULL ndlp reference */
nvmewqe->context1 = lpfc_nlp_get(ndlp);
if (nvmewqe->context1 == NULL)
goto nvme_wqe_free_wqeq_exit;
nvmewqe->context2 = ctxp;
wqe = &nvmewqe->wqe;
memset(wqe, 0, sizeof(union lpfc_wqe));
/* Words 0 - 2 */
wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize;
wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf));
wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf));
/* Word 3 */
/* Word 4 */
/* Word 5 */
bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1);
bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0);
bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP);
bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME);
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag);
/* Word 7 */
bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
CMD_XMIT_SEQUENCE64_WQE);
bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI);
bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
/* Word 8 */
wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag);
/* Needs to be set by caller */
bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid);
/* Word 10 */
bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
LPFC_WQE_LENLOC_WORD12);
bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
/* Word 11 */
bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com,
LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com,
OTHER_COMMAND);
/* Word 12 */
wqe->xmit_sequence.xmit_len = rspsize;
nvmewqe->retry = 1;
nvmewqe->vport = phba->pport;
nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
nvmewqe->iocb_flag |= LPFC_IO_NVME_LS;
/* Xmit NVMET response to remote NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
"6039 Xmit NVMET LS response to remote "
"NPORT x%x iotag:x%x oxid:x%x size:x%x\n",
ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid,
rspsize);
return nvmewqe;
nvme_wqe_free_wqeq_exit:
nvmewqe->context2 = NULL;
nvmewqe->context3 = NULL;
lpfc_sli_release_iocbq(phba, nvmewqe);
return NULL;
}
static struct lpfc_iocbq *
lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp)
{
struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req;
struct lpfc_nvmet_tgtport *tgtp;
struct sli4_sge *sgl;
struct lpfc_nodelist *ndlp;
struct lpfc_iocbq *nvmewqe;
struct scatterlist *sgel;
union lpfc_wqe128 *wqe;
uint32_t *txrdy;
dma_addr_t physaddr;
int i, cnt;
int xc = 1;
if (!lpfc_is_link_up(phba)) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6107 NVMET prep FCP wqe: link err:"
"NPORT x%x oxid x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
return NULL;
}
ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6108 NVMET prep FCP wqe: no ndlp: "
"NPORT x%x oxid x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
return NULL;
}
if (rsp->sg_cnt > phba->cfg_nvme_seg_cnt) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6109 NVMET prep FCP wqe: seg cnt err: "
"NPORT x%x oxid x%x ste %d cnt %d\n",
ctxp->sid, ctxp->oxid, ctxp->state,
phba->cfg_nvme_seg_cnt);
return NULL;
}
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
nvmewqe = ctxp->wqeq;
if (nvmewqe == NULL) {
/* Allocate buffer for command wqe */
nvmewqe = ctxp->ctxbuf->iocbq;
if (nvmewqe == NULL) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6110 NVMET prep FCP wqe: No "
"WQE: NPORT x%x oxid x%x ste %d\n",
ctxp->sid, ctxp->oxid, ctxp->state);
return NULL;
}
ctxp->wqeq = nvmewqe;
xc = 0; /* create new XRI */
nvmewqe->sli4_lxritag = NO_XRI;
nvmewqe->sli4_xritag = NO_XRI;
}
/* Sanity check */
if (((ctxp->state == LPFC_NVMET_STE_RCV) &&
(ctxp->entry_cnt == 1)) ||
(ctxp->state == LPFC_NVMET_STE_DATA)) {
wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
} else {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6111 Wrong state NVMET FCP: %d cnt %d\n",
ctxp->state, ctxp->entry_cnt);
return NULL;
}
sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl;
switch (rsp->op) {
case NVMET_FCOP_READDATA:
case NVMET_FCOP_READDATA_RSP:
/* Words 0 - 2 : The first sg segment */
sgel = &rsp->sg[0];
physaddr = sg_dma_address(sgel);
wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel);
wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr));
wqe->fcp_tsend.bde.addrHigh =
cpu_to_le32(putPaddrHigh(physaddr));
/* Word 3 */
wqe->fcp_tsend.payload_offset_len = 0;
/* Word 4 */
wqe->fcp_tsend.relative_offset = ctxp->offset;
/* Word 5 */
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com,
nvmewqe->sli4_xritag);
/* Word 7 */
bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);
/* Word 8 */
wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag);
bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid);
/* Word 10 */
bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE);
bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com,
LPFC_WQE_LENLOC_WORD12);
bf_set(wqe_ebde_cnt, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, xc);
bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
if (phba->cfg_nvme_oas)
bf_set(wqe_oas, &wqe->fcp_tsend.wqe_com, 1);
/* Word 11 */
bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com,
LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com,
FCP_COMMAND_TSEND);
/* Word 12 */
wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
/* Setup 2 SKIP SGEs */
sgl->addr_hi = 0;
sgl->addr_lo = 0;
sgl->word2 = 0;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = 0;
sgl++;
sgl->addr_hi = 0;
sgl->addr_lo = 0;
sgl->word2 = 0;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = 0;
sgl++;
if (rsp->op == NVMET_FCOP_READDATA_RSP) {
atomic_inc(&tgtp->xmt_fcp_read_rsp);
bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) &&
(rsp->rsplen == 12)) {
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
} else {
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com,
((rsp->rsplen >> 2) - 1));
memcpy(&wqe->words[16], rsp->rspaddr,
rsp->rsplen);
}
} else {
atomic_inc(&tgtp->xmt_fcp_read);
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
}
break;
case NVMET_FCOP_WRITEDATA:
/* Words 0 - 2 : The first sg segment */
txrdy = dma_pool_alloc(phba->txrdy_payload_pool,
GFP_KERNEL, &physaddr);
if (!txrdy) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6041 Bad txrdy buffer: oxid x%x\n",
ctxp->oxid);
return NULL;
}
ctxp->txrdy = txrdy;
ctxp->txrdy_phys = physaddr;
wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN;
wqe->fcp_treceive.bde.addrLow =
cpu_to_le32(putPaddrLow(physaddr));
wqe->fcp_treceive.bde.addrHigh =
cpu_to_le32(putPaddrHigh(physaddr));
/* Word 3 */
wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;
/* Word 4 */
wqe->fcp_treceive.relative_offset = ctxp->offset;
/* Word 5 */
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com,
nvmewqe->sli4_xritag);
/* Word 7 */
bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, 1);
bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com,
CMD_FCP_TRECEIVE64_WQE);
/* Word 8 */
wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag);
bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid);
/* Word 10 */
bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ);
bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com,
LPFC_WQE_LENLOC_WORD12);
bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, xc);
bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0);
bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0);
bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
if (phba->cfg_nvme_oas)
bf_set(wqe_oas, &wqe->fcp_treceive.wqe_com, 1);
/* Word 11 */
bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com,
LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com,
FCP_COMMAND_TRECEIVE);
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
/* Word 12 */
wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
/* Setup 1 TXRDY and 1 SKIP SGE */
txrdy[0] = 0;
txrdy[1] = cpu_to_be32(rsp->transfer_length);
txrdy[2] = 0;
sgl->addr_hi = putPaddrHigh(physaddr);
sgl->addr_lo = putPaddrLow(physaddr);
sgl->word2 = 0;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN);
sgl++;
sgl->addr_hi = 0;
sgl->addr_lo = 0;
sgl->word2 = 0;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = 0;
sgl++;
atomic_inc(&tgtp->xmt_fcp_write);
break;
case NVMET_FCOP_RSP:
/* Words 0 - 2 */
physaddr = rsp->rspdma;
wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen;
wqe->fcp_trsp.bde.addrLow =
cpu_to_le32(putPaddrLow(physaddr));
wqe->fcp_trsp.bde.addrHigh =
cpu_to_le32(putPaddrHigh(physaddr));
/* Word 3 */
wqe->fcp_trsp.response_len = rsp->rsplen;
/* Word 4 */
wqe->fcp_trsp.rsvd_4_5[0] = 0;
/* Word 5 */
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com,
nvmewqe->sli4_xritag);
/* Word 7 */
bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, 0);
bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1);
bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);
/* Word 8 */
wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag);
bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid);
/* Word 10 */
bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 0);
bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_WRITE);
bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com,
LPFC_WQE_LENLOC_WORD3);
bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, xc);
bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
if (phba->cfg_nvme_oas)
bf_set(wqe_oas, &wqe->fcp_trsp.wqe_com, 1);
/* Word 11 */
bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com,
LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com,
FCP_COMMAND_TRSP);
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
/* Good response - all zero's on wire */
bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0);
bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0);
} else {
bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1);
bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1);
bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com,
((rsp->rsplen >> 2) - 1));
memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen);
}
/* Use rspbuf, NOT sg list */
rsp->sg_cnt = 0;
sgl->word2 = 0;
atomic_inc(&tgtp->xmt_fcp_rsp);
break;
default:
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
"6064 Unknown Rsp Op %d\n",
rsp->op);
return NULL;
}
nvmewqe->retry = 1;
nvmewqe->vport = phba->pport;
nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
nvmewqe->context1 = ndlp;
for (i = 0; i < rsp->sg_cnt; i++) {
sgel = &rsp->sg[i];
physaddr = sg_dma_address(sgel);
cnt = sg_dma_len(sgel);
sgl->addr_hi = putPaddrHigh(physaddr);
sgl->addr_lo = putPaddrLow(physaddr);
sgl->word2 = 0;
bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset);
if ((i+1) == rsp->sg_cnt)
bf_set(lpfc_sli4_sge_last, sgl, 1);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->sge_len = cpu_to_le32(cnt);
sgl++;
ctxp->offset += cnt;
}
ctxp->state = LPFC_NVMET_STE_DATA;
ctxp->entry_cnt++;
return nvmewqe;
}
/**
* lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
* @phba: Pointer to HBA context object.
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for NVME ABTS for FCP cmds
* The function frees memory resources used for the NVME commands.
**/
static void
lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_nvmet_rcv_ctx *ctxp;
struct lpfc_nvmet_tgtport *tgtp;
uint32_t status, result;
unsigned long flags;
bool released = false;
ctxp = cmdwqe->context2;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (ctxp->flag & LPFC_NVMET_ABORT_OP)
atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
ctxp->state = LPFC_NVMET_STE_DONE;
/* Check if we already received a free context call
* and we have completed processing an abort situation.
*/
spin_lock_irqsave(&ctxp->ctxlock, flags);
if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
!(ctxp->flag & LPFC_NVMET_XBUSY)) {
list_del(&ctxp->list);
released = true;
}
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
spin_unlock_irqrestore(&ctxp->ctxlock, flags);
atomic_inc(&tgtp->xmt_abort_rsp);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6165 ABORT cmpl: xri x%x flg x%x (%d) "
"WCQE: %08x %08x %08x %08x\n",
ctxp->oxid, ctxp->flag, released,
wcqe->word0, wcqe->total_data_placed,
result, wcqe->word3);
cmdwqe->context2 = NULL;
cmdwqe->context3 = NULL;
/*
* if transport has released ctx, then can reuse it. Otherwise,
* will be recycled by transport release call.
*/
if (released)
lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
/* This is the iocbq for the abort, not the command */
lpfc_sli_release_iocbq(phba, cmdwqe);
/* Since iaab/iaar are NOT set, there is no work left.
* For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
* should have been called already.
*/
}
/**
* lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS
* @phba: Pointer to HBA context object.
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for NVME ABTS for FCP cmds
* The function frees memory resources used for the NVME commands.
**/
static void
lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_nvmet_rcv_ctx *ctxp;
struct lpfc_nvmet_tgtport *tgtp;
unsigned long flags;
uint32_t status, result;
bool released = false;
ctxp = cmdwqe->context2;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
if (!ctxp) {
/* if context is clear, related io alrady complete */
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n",
wcqe->word0, wcqe->total_data_placed,
result, wcqe->word3);
return;
}
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (ctxp->flag & LPFC_NVMET_ABORT_OP)
atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
/* Sanity check */
if (ctxp->state != LPFC_NVMET_STE_ABORT) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6112 ABTS Wrong state:%d oxid x%x\n",
ctxp->state, ctxp->oxid);
}
/* Check if we already received a free context call
* and we have completed processing an abort situation.
*/
ctxp->state = LPFC_NVMET_STE_DONE;
spin_lock_irqsave(&ctxp->ctxlock, flags);
if ((ctxp->flag & LPFC_NVMET_CTX_RLS) &&
!(ctxp->flag & LPFC_NVMET_XBUSY)) {
list_del(&ctxp->list);
released = true;
}
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
spin_unlock_irqrestore(&ctxp->ctxlock, flags);
atomic_inc(&tgtp->xmt_abort_rsp);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6316 ABTS cmpl xri x%x flg x%x (%x) "
"WCQE: %08x %08x %08x %08x\n",
ctxp->oxid, ctxp->flag, released,
wcqe->word0, wcqe->total_data_placed,
result, wcqe->word3);
cmdwqe->context2 = NULL;
cmdwqe->context3 = NULL;
/*
* if transport has released ctx, then can reuse it. Otherwise,
* will be recycled by transport release call.
*/
if (released)
lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
/* Since iaab/iaar are NOT set, there is no work left.
* For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted
* should have been called already.
*/
}
/**
* lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
* @phba: Pointer to HBA context object.
* @cmdwqe: Pointer to driver command WQE object.
* @wcqe: Pointer to driver response CQE object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for NVME ABTS for LS cmds
* The function frees memory resources used for the NVME commands.
**/
static void
lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_nvmet_rcv_ctx *ctxp;
struct lpfc_nvmet_tgtport *tgtp;
uint32_t status, result;
ctxp = cmdwqe->context2;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
atomic_inc(&tgtp->xmt_ls_abort_cmpl);
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6083 Abort cmpl: ctx %p WCQE:%08x %08x %08x %08x\n",
ctxp, wcqe->word0, wcqe->total_data_placed,
result, wcqe->word3);
if (!ctxp) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6415 NVMET LS Abort No ctx: WCQE: "
"%08x %08x %08x %08x\n",
wcqe->word0, wcqe->total_data_placed,
result, wcqe->word3);
lpfc_sli_release_iocbq(phba, cmdwqe);
return;
}
if (ctxp->state != LPFC_NVMET_STE_LS_ABORT) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6416 NVMET LS abort cmpl state mismatch: "
"oxid x%x: %d %d\n",
ctxp->oxid, ctxp->state, ctxp->entry_cnt);
}
cmdwqe->context2 = NULL;
cmdwqe->context3 = NULL;
lpfc_sli_release_iocbq(phba, cmdwqe);
kfree(ctxp);
}
static int
lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp,
uint32_t sid, uint16_t xri)
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
union lpfc_wqe *wqe_abts;
struct lpfc_nodelist *ndlp;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6067 ABTS: sid %x xri x%x/x%x\n",
sid, xri, ctxp->wqeq->sli4_xritag);
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
ndlp = lpfc_findnode_did(phba->pport, sid);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6134 Drop ABTS - wrong NDLP state x%x.\n",
(ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
/* No failure to an ABTS request. */
return 0;
}
abts_wqeq = ctxp->wqeq;
wqe_abts = &abts_wqeq->wqe;
/*
* Since we zero the whole WQE, we need to ensure we set the WQE fields
* that were initialized in lpfc_sli4_nvmet_alloc.
*/
memset(wqe_abts, 0, sizeof(union lpfc_wqe));
/* Word 5 */
bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);
/* Word 6 */
bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
abts_wqeq->sli4_xritag);
/* Word 7 */
bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
CMD_XMIT_SEQUENCE64_WQE);
bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);
/* Word 8 */
wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;
/* Word 9 */
bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
/* Needs to be set by caller */
bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);
/* Word 10 */
bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1);
bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
LPFC_WQE_LENLOC_WORD12);
bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);
/* Word 11 */
bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
LPFC_WQE_CQ_ID_DEFAULT);
bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
OTHER_COMMAND);
abts_wqeq->vport = phba->pport;
abts_wqeq->context1 = ndlp;
abts_wqeq->context2 = ctxp;
abts_wqeq->context3 = NULL;
abts_wqeq->rsvd2 = 0;
/* hba_wqidx should already be setup from command we are aborting */
abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
abts_wqeq->iocb.ulpLe = 1;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6069 Issue ABTS to xri x%x reqtag x%x\n",
xri, abts_wqeq->iotag);
return 1;
}
static int
lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp,
uint32_t sid, uint16_t xri)
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
union lpfc_wqe *abts_wqe;
struct lpfc_nodelist *ndlp;
unsigned long flags;
int rc;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (!ctxp->wqeq) {
ctxp->wqeq = ctxp->ctxbuf->iocbq;
ctxp->wqeq->hba_wqidx = 0;
}
ndlp = lpfc_findnode_did(phba->pport, sid);
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6160 Drop ABORT - wrong NDLP state x%x.\n",
(ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
/* No failure to an ABTS request. */
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
return 0;
}
/* Issue ABTS for this WQE based on iotag */
ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
if (!ctxp->abort_wqeq) {
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6161 ABORT failed: No wqeqs: "
"xri: x%x\n", ctxp->oxid);
/* No failure to an ABTS request. */
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
return 0;
}
abts_wqeq = ctxp->abort_wqeq;
abts_wqe = &abts_wqeq->wqe;
ctxp->state = LPFC_NVMET_STE_ABORT;
/* Announce entry to new IO submit field. */
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6162 ABORT Request to rport DID x%06x "
"for xri x%x x%x\n",
ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);
/* 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_NVME_IOQ_FLUSH) {
spin_unlock_irqrestore(&phba->hbalock, flags);
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6163 Driver in reset cleanup - flushing "
"NVME Req now. hba_flag x%x oxid x%x\n",
phba->hba_flag, ctxp->oxid);
lpfc_sli_release_iocbq(phba, abts_wqeq);
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
return 0;
}
/* Outstanding abort is in progress */
if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) {
spin_unlock_irqrestore(&phba->hbalock, flags);
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
"6164 Outstanding NVME I/O Abort Request "
"still pending on oxid x%x\n",
ctxp->oxid);
lpfc_sli_release_iocbq(phba, abts_wqeq);
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
return 0;
}
/* Ready - mark outstanding as aborted by driver. */
abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED;
/* WQEs are reused. Clear stale data and set key fields to
* zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
*/
memset(abts_wqe, 0, sizeof(union lpfc_wqe));
/* word 3 */
bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
/* word 7 */
bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0);
bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
/* word 8 - tell the FW to abort the IO associated with this
* outstanding exchange ID.
*/
abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag;
/* word 9 - this is the iotag for the abts_wqe completion. */
bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
abts_wqeq->iotag);
/* word 10 */
bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
/* word 11 */
bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
/* ABTS WQE must go to the same WQ as the WQE to be aborted */
abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
abts_wqeq->iocb_cmpl = 0;
abts_wqeq->iocb_flag |= LPFC_IO_NVME;
abts_wqeq->context2 = ctxp;
abts_wqeq->vport = phba->pport;
rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
spin_unlock_irqrestore(&phba->hbalock, flags);
if (rc == WQE_SUCCESS) {
atomic_inc(&tgtp->xmt_abort_sol);
return 0;
}
atomic_inc(&tgtp->xmt_abort_rsp_error);
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
lpfc_sli_release_iocbq(phba, abts_wqeq);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6166 Failed ABORT issue_wqe with status x%x "
"for oxid x%x.\n",
rc, ctxp->oxid);
return 1;
}
static int
lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp,
uint32_t sid, uint16_t xri)
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
unsigned long flags;
int rc;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (!ctxp->wqeq) {
ctxp->wqeq = ctxp->ctxbuf->iocbq;
ctxp->wqeq->hba_wqidx = 0;
}
if (ctxp->state == LPFC_NVMET_STE_FREE) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6417 NVMET ABORT ctx freed %d %d oxid x%x\n",
ctxp->state, ctxp->entry_cnt, ctxp->oxid);
rc = WQE_BUSY;
goto aerr;
}
ctxp->state = LPFC_NVMET_STE_ABORT;
ctxp->entry_cnt++;
rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
if (rc == 0)
goto aerr;
spin_lock_irqsave(&phba->hbalock, flags);
abts_wqeq = ctxp->wqeq;
abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
abts_wqeq->iocb_cmpl = NULL;
abts_wqeq->iocb_flag |= LPFC_IO_NVMET;
rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
spin_unlock_irqrestore(&phba->hbalock, flags);
if (rc == WQE_SUCCESS) {
return 0;
}
aerr:
ctxp->flag &= ~LPFC_NVMET_ABORT_OP;
atomic_inc(&tgtp->xmt_abort_rsp_error);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6135 Failed to Issue ABTS for oxid x%x. Status x%x\n",
ctxp->oxid, rc);
return 1;
}
static int
lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
struct lpfc_nvmet_rcv_ctx *ctxp,
uint32_t sid, uint16_t xri)
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
union lpfc_wqe *wqe_abts;
unsigned long flags;
int rc;
if ((ctxp->state == LPFC_NVMET_STE_LS_RCV && ctxp->entry_cnt == 1) ||
(ctxp->state == LPFC_NVMET_STE_LS_RSP && ctxp->entry_cnt == 2)) {
ctxp->state = LPFC_NVMET_STE_LS_ABORT;
ctxp->entry_cnt++;
} else {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6418 NVMET LS abort state mismatch "
"IO x%x: %d %d\n",
ctxp->oxid, ctxp->state, ctxp->entry_cnt);
ctxp->state = LPFC_NVMET_STE_LS_ABORT;
}
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
if (!ctxp->wqeq) {
/* Issue ABTS for this WQE based on iotag */
ctxp->wqeq = lpfc_sli_get_iocbq(phba);
if (!ctxp->wqeq) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6068 Abort failed: No wqeqs: "
"xri: x%x\n", xri);
/* No failure to an ABTS request. */
kfree(ctxp);
return 0;
}
}
abts_wqeq = ctxp->wqeq;
wqe_abts = &abts_wqeq->wqe;
if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) {
rc = WQE_BUSY;
goto out;
}
spin_lock_irqsave(&phba->hbalock, flags);
abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
abts_wqeq->iocb_cmpl = 0;
abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS;
rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, abts_wqeq);
spin_unlock_irqrestore(&phba->hbalock, flags);
if (rc == WQE_SUCCESS) {
atomic_inc(&tgtp->xmt_abort_unsol);
return 0;
}
out:
atomic_inc(&tgtp->xmt_abort_rsp_error);
abts_wqeq->context2 = NULL;
abts_wqeq->context3 = NULL;
lpfc_sli_release_iocbq(phba, abts_wqeq);
kfree(ctxp);
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
"6056 Failed to Issue ABTS. Status x%x\n", rc);
return 0;
}
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