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scsi: elx: libefc: Extended link Service I/O handling

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Add library interface definitions for:

 - Functions to build and send ELS/CT/BLS commands and responses.

Link: https://lore.kernel.org/r/20210601235512.20104-16-jsmart2021@gmail.com
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Co-developed-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2021-06-01 16:54:56 -07:00 committed by Martin K. Petersen
parent 202bfdffae
commit 8f406ef728
2 changed files with 1205 additions and 0 deletions
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1098
drivers/scsi/elx/libefc/efc_els.c Normal file
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drivers/scsi/elx/libefc/efc_els.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2021 Broadcom. All Rights Reserved. The term
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
*/
#ifndef __EFC_ELS_H__
#define __EFC_ELS_H__
#define EFC_STATUS_INVALID INT_MAX
#define EFC_ELS_IO_POOL_SZ 1024
struct efc_els_io_req {
struct list_head list_entry;
struct kref ref;
void (*release)(struct kref *arg);
struct efc_node *node;
void *cb;
u32 els_retries_remaining;
bool els_req_free;
struct timer_list delay_timer;
const char *display_name;
struct efc_disc_io io;
};
typedef int(*efc_hw_srrs_cb_t)(void *arg, u32 length, int status,
u32 ext_status);
void _efc_els_io_free(struct kref *arg);
struct efc_els_io_req *
efc_els_io_alloc(struct efc_node *node, u32 reqlen);
struct efc_els_io_req *
efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen);
void efc_els_io_free(struct efc_els_io_req *els);
/* ELS command send */
typedef void (*els_cb_t)(struct efc_node *node,
struct efc_node_cb *cbdata, void *arg);
int
efc_send_plogi(struct efc_node *node);
int
efc_send_flogi(struct efc_node *node);
int
efc_send_fdisc(struct efc_node *node);
int
efc_send_prli(struct efc_node *node);
int
efc_send_prlo(struct efc_node *node);
int
efc_send_logo(struct efc_node *node);
int
efc_send_adisc(struct efc_node *node);
int
efc_send_pdisc(struct efc_node *node);
int
efc_send_scr(struct efc_node *node);
int
efc_ns_send_rftid(struct efc_node *node);
int
efc_ns_send_rffid(struct efc_node *node);
int
efc_ns_send_gidpt(struct efc_node *node);
void
efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg);
/* ELS acc send */
int
efc_send_ls_acc(struct efc_node *node, u32 ox_id);
int
efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_cod,
u32 reason_code_expl, u32 vendor_unique);
int
efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id);
int
efc_send_flogi_acc(struct efc_node *node, u32 ox_id, u32 is_fport);
int
efc_send_plogi_acc(struct efc_node *node, u32 ox_id);
int
efc_send_prli_acc(struct efc_node *node, u32 ox_id);
int
efc_send_logo_acc(struct efc_node *node, u32 ox_id);
int
efc_send_prlo_acc(struct efc_node *node, u32 ox_id);
int
efc_send_adisc_acc(struct efc_node *node, u32 ox_id);
int
efc_bls_send_acc_hdr(struct efc *efc, struct efc_node *node,
struct fc_frame_header *hdr);
int
efc_bls_send_rjt_hdr(struct efc_els_io_req *io, struct fc_frame_header *hdr);
int
efc_els_io_list_empty(struct efc_node *node, struct list_head *list);
/* CT */
int
efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id,
struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code, u32 reason_code,
u32 reason_code_explanation);
int
efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr);
#endif /* __EFC_ELS_H__ */