linux/drivers/scsi/bfa/fcpim.c
Jing Huang 4b5e759dca [SCSI] bfa: fix uf post and rport fcpim state machine
BFA UF module did not hold lock when seding uf post buffer message to firmware
causing CPE-Q corruption. Fix is to check present of FCS and if FCS present
hold lock while posting UF buffers.

Handle PRLO with sending acc to it and relogin with rport. Discard fcxp
before any state change.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-27 12:04:16 -05:00

824 lines
21 KiB
C

/*
* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
* All rights reserved
* www.brocade.com
*
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) Version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
/**
* fcpim.c - FCP initiator mode i-t nexus state machine
*/
#include <bfa.h>
#include <bfa_svc.h>
#include "fcs_fcpim.h"
#include "fcs_rport.h"
#include "fcs_lport.h"
#include "fcs_trcmod.h"
#include "fcs_fcxp.h"
#include "fcs.h"
#include <fcs/bfa_fcs_fcpim.h>
#include <fcb/bfa_fcb_fcpim.h>
#include <aen/bfa_aen_itnim.h>
BFA_TRC_FILE(FCS, FCPIM);
/*
* forward declarations
*/
static void bfa_fcs_itnim_timeout(void *arg);
static void bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim);
static void bfa_fcs_itnim_send_prli(void *itnim_cbarg,
struct bfa_fcxp_s *fcxp_alloced);
static void bfa_fcs_itnim_prli_response(void *fcsarg,
struct bfa_fcxp_s *fcxp,
void *cbarg,
bfa_status_t req_status,
u32 rsp_len,
u32 resid_len,
struct fchs_s *rsp_fchs);
static void bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
enum bfa_itnim_aen_event event);
/**
* fcs_itnim_sm FCS itnim state machine events
*/
enum bfa_fcs_itnim_event {
BFA_FCS_ITNIM_SM_ONLINE = 1, /* rport online event */
BFA_FCS_ITNIM_SM_OFFLINE = 2, /* rport offline */
BFA_FCS_ITNIM_SM_FRMSENT = 3, /* prli frame is sent */
BFA_FCS_ITNIM_SM_RSP_OK = 4, /* good response */
BFA_FCS_ITNIM_SM_RSP_ERROR = 5, /* error response */
BFA_FCS_ITNIM_SM_TIMEOUT = 6, /* delay timeout */
BFA_FCS_ITNIM_SM_HCB_OFFLINE = 7, /* BFA online callback */
BFA_FCS_ITNIM_SM_HCB_ONLINE = 8, /* BFA offline callback */
BFA_FCS_ITNIM_SM_INITIATOR = 9, /* rport is initiator */
BFA_FCS_ITNIM_SM_DELETE = 10, /* delete event from rport */
BFA_FCS_ITNIM_SM_PRLO = 11, /* delete event from rport */
};
static void bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static void bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event);
static struct bfa_sm_table_s itnim_sm_table[] = {
{BFA_SM(bfa_fcs_itnim_sm_offline), BFA_ITNIM_OFFLINE},
{BFA_SM(bfa_fcs_itnim_sm_prli_send), BFA_ITNIM_PRLI_SEND},
{BFA_SM(bfa_fcs_itnim_sm_prli), BFA_ITNIM_PRLI_SENT},
{BFA_SM(bfa_fcs_itnim_sm_prli_retry), BFA_ITNIM_PRLI_RETRY},
{BFA_SM(bfa_fcs_itnim_sm_hcb_online), BFA_ITNIM_HCB_ONLINE},
{BFA_SM(bfa_fcs_itnim_sm_online), BFA_ITNIM_ONLINE},
{BFA_SM(bfa_fcs_itnim_sm_hcb_offline), BFA_ITNIM_HCB_OFFLINE},
{BFA_SM(bfa_fcs_itnim_sm_initiator), BFA_ITNIM_INITIATIOR},
};
/**
* fcs_itnim_sm FCS itnim state machine
*/
static void
bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_ONLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
itnim->prli_retries = 0;
bfa_fcs_itnim_send_prli(itnim, NULL);
break;
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_INITIATOR:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_FRMSENT:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli);
break;
case BFA_FCS_ITNIM_SM_INITIATOR:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
break;
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_RSP_OK:
if (itnim->rport->scsi_function == BFA_RPORT_INITIATOR) {
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
} else {
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_online);
bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec);
}
break;
case BFA_FCS_ITNIM_SM_RSP_ERROR:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_retry);
bfa_timer_start(itnim->fcs->bfa, &itnim->timer,
bfa_fcs_itnim_timeout, itnim,
BFA_FCS_RETRY_TIMEOUT);
break;
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcxp_discard(itnim->fcxp);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_INITIATOR:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
bfa_fcxp_discard(itnim->fcxp);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcxp_discard(itnim->fcxp);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_TIMEOUT:
if (itnim->prli_retries < BFA_FCS_RPORT_MAX_RETRIES) {
itnim->prli_retries++;
bfa_trc(itnim->fcs, itnim->prli_retries);
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send);
bfa_fcs_itnim_send_prli(itnim, NULL);
} else {
/* invoke target offline */
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_rport_logo_imp(itnim->rport);
}
break;
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_timer_stop(&itnim->timer);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_INITIATOR:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator);
bfa_timer_stop(&itnim->timer);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_timer_stop(&itnim->timer);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_HCB_ONLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_online);
bfa_fcb_itnim_online(itnim->itnim_drv);
bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_ONLINE);
break;
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_itnim_offline(itnim->bfa_itnim);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline);
bfa_fcb_itnim_offline(itnim->itnim_drv);
bfa_itnim_offline(itnim->bfa_itnim);
if (bfa_fcs_port_is_online(itnim->rport->port) == BFA_TRUE)
bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_DISCONNECT);
else
bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_OFFLINE);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
static void
bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_HCB_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
/*
* This state is set when a discovered rport is also in intiator mode.
* This ITN is marked as no_op and is not active and will not be truned into
* online state.
*/
static void
bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim,
enum bfa_fcs_itnim_event event)
{
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_trc(itnim->fcs, event);
switch (event) {
case BFA_FCS_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_rport_itnim_ack(itnim->rport);
break;
case BFA_FCS_ITNIM_SM_RSP_ERROR:
case BFA_FCS_ITNIM_SM_ONLINE:
case BFA_FCS_ITNIM_SM_INITIATOR:
break;
case BFA_FCS_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
bfa_fcs_itnim_free(itnim);
break;
default:
bfa_sm_fault(itnim->fcs, event);
}
}
/**
* itnim_private FCS ITNIM private interfaces
*/
static void
bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim,
enum bfa_itnim_aen_event event)
{
struct bfa_fcs_rport_s *rport = itnim->rport;
union bfa_aen_data_u aen_data;
struct bfa_log_mod_s *logmod = rport->fcs->logm;
wwn_t lpwwn = bfa_fcs_port_get_pwwn(rport->port);
wwn_t rpwwn = rport->pwwn;
char lpwwn_ptr[BFA_STRING_32];
char rpwwn_ptr[BFA_STRING_32];
/*
* Don't post events for well known addresses
*/
if (BFA_FCS_PID_IS_WKA(rport->pid))
return;
wwn2str(lpwwn_ptr, lpwwn);
wwn2str(rpwwn_ptr, rpwwn);
bfa_log(logmod, BFA_LOG_CREATE_ID(BFA_AEN_CAT_ITNIM, event),
rpwwn_ptr, lpwwn_ptr);
aen_data.itnim.vf_id = rport->port->fabric->vf_id;
aen_data.itnim.ppwwn =
bfa_fcs_port_get_pwwn(bfa_fcs_get_base_port(itnim->fcs));
aen_data.itnim.lpwwn = lpwwn;
aen_data.itnim.rpwwn = rpwwn;
}
static void
bfa_fcs_itnim_send_prli(void *itnim_cbarg, struct bfa_fcxp_s *fcxp_alloced)
{
struct bfa_fcs_itnim_s *itnim = itnim_cbarg;
struct bfa_fcs_rport_s *rport = itnim->rport;
struct bfa_fcs_port_s *port = rport->port;
struct fchs_s fchs;
struct bfa_fcxp_s *fcxp;
int len;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs);
if (!fcxp) {
itnim->stats.fcxp_alloc_wait++;
bfa_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe,
bfa_fcs_itnim_send_prli, itnim);
return;
}
itnim->fcxp = fcxp;
len = fc_prli_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), itnim->rport->pid,
bfa_fcs_port_get_fcid(port), 0);
bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag,
BFA_FALSE, FC_CLASS_3, len, &fchs,
bfa_fcs_itnim_prli_response, (void *)itnim, FC_MAX_PDUSZ,
FC_ELS_TOV);
itnim->stats.prli_sent++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_FRMSENT);
}
static void
bfa_fcs_itnim_prli_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
bfa_status_t req_status, u32 rsp_len,
u32 resid_len, struct fchs_s *rsp_fchs)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg;
struct fc_els_cmd_s *els_cmd;
struct fc_prli_s *prli_resp;
struct fc_ls_rjt_s *ls_rjt;
struct fc_prli_params_s *sparams;
bfa_trc(itnim->fcs, req_status);
/*
* Sanity Checks
*/
if (req_status != BFA_STATUS_OK) {
itnim->stats.prli_rsp_err++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
return;
}
els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp);
if (els_cmd->els_code == FC_ELS_ACC) {
prli_resp = (struct fc_prli_s *) els_cmd;
if (fc_prli_rsp_parse(prli_resp, rsp_len) != FC_PARSE_OK) {
bfa_trc(itnim->fcs, rsp_len);
/*
* Check if this r-port is also in Initiator mode.
* If so, we need to set this ITN as a no-op.
*/
if (prli_resp->parampage.servparams.initiator) {
bfa_trc(itnim->fcs, prli_resp->parampage.type);
itnim->rport->scsi_function =
BFA_RPORT_INITIATOR;
itnim->stats.prli_rsp_acc++;
bfa_sm_send_event(itnim,
BFA_FCS_ITNIM_SM_RSP_OK);
return;
}
itnim->stats.prli_rsp_parse_err++;
return;
}
itnim->rport->scsi_function = BFA_RPORT_TARGET;
sparams = &prli_resp->parampage.servparams;
itnim->seq_rec = sparams->retry;
itnim->rec_support = sparams->rec_support;
itnim->task_retry_id = sparams->task_retry_id;
itnim->conf_comp = sparams->confirm;
itnim->stats.prli_rsp_acc++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_OK);
} else {
ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp);
bfa_trc(itnim->fcs, ls_rjt->reason_code);
bfa_trc(itnim->fcs, ls_rjt->reason_code_expl);
itnim->stats.prli_rsp_rjt++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR);
}
}
static void
bfa_fcs_itnim_timeout(void *arg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)arg;
itnim->stats.timeout++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_TIMEOUT);
}
static void
bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim)
{
bfa_itnim_delete(itnim->bfa_itnim);
bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv);
}
/**
* itnim_public FCS ITNIM public interfaces
*/
/**
* Called by rport when a new rport is created.
*
* @param[in] rport - remote port.
*/
struct bfa_fcs_itnim_s *
bfa_fcs_itnim_create(struct bfa_fcs_rport_s *rport)
{
struct bfa_fcs_port_s *port = rport->port;
struct bfa_fcs_itnim_s *itnim;
struct bfad_itnim_s *itnim_drv;
struct bfa_itnim_s *bfa_itnim;
/*
* call bfad to allocate the itnim
*/
bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv);
if (itnim == NULL) {
bfa_trc(port->fcs, rport->pwwn);
return NULL;
}
/*
* Initialize itnim
*/
itnim->rport = rport;
itnim->fcs = rport->fcs;
itnim->itnim_drv = itnim_drv;
/*
* call BFA to create the itnim
*/
bfa_itnim = bfa_itnim_create(port->fcs->bfa, rport->bfa_rport, itnim);
if (bfa_itnim == NULL) {
bfa_trc(port->fcs, rport->pwwn);
bfa_fcb_itnim_free(port->fcs->bfad, itnim_drv);
bfa_assert(0);
return NULL;
}
itnim->bfa_itnim = bfa_itnim;
itnim->seq_rec = BFA_FALSE;
itnim->rec_support = BFA_FALSE;
itnim->conf_comp = BFA_FALSE;
itnim->task_retry_id = BFA_FALSE;
/*
* Set State machine
*/
bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline);
return itnim;
}
/**
* Called by rport to delete the instance of FCPIM.
*
* @param[in] rport - remote port.
*/
void
bfa_fcs_itnim_delete(struct bfa_fcs_itnim_s *itnim)
{
bfa_trc(itnim->fcs, itnim->rport->pid);
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_DELETE);
}
/**
* Notification from rport that PLOGI is complete to initiate FC-4 session.
*/
void
bfa_fcs_itnim_rport_online(struct bfa_fcs_itnim_s *itnim)
{
itnim->stats.onlines++;
if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid)) {
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_ONLINE);
} else {
/*
* For well known addresses, we set the itnim to initiator
* state
*/
itnim->stats.initiator++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR);
}
}
/**
* Called by rport to handle a remote device offline.
*/
void
bfa_fcs_itnim_rport_offline(struct bfa_fcs_itnim_s *itnim)
{
itnim->stats.offlines++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_OFFLINE);
}
/**
* Called by rport when remote port is known to be an initiator from
* PRLI received.
*/
void
bfa_fcs_itnim_is_initiator(struct bfa_fcs_itnim_s *itnim)
{
bfa_trc(itnim->fcs, itnim->rport->pid);
itnim->stats.initiator++;
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR);
}
/**
* Called by rport to check if the itnim is online.
*/
bfa_status_t
bfa_fcs_itnim_get_online_state(struct bfa_fcs_itnim_s *itnim)
{
bfa_trc(itnim->fcs, itnim->rport->pid);
switch (bfa_sm_to_state(itnim_sm_table, itnim->sm)) {
case BFA_ITNIM_ONLINE:
case BFA_ITNIM_INITIATIOR:
return BFA_STATUS_OK;
default:
return BFA_STATUS_NO_FCPIM_NEXUS;
}
}
/**
* BFA completion callback for bfa_itnim_online().
*/
void
bfa_cb_itnim_online(void *cbarg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_ONLINE);
}
/**
* BFA completion callback for bfa_itnim_offline().
*/
void
bfa_cb_itnim_offline(void *cb_arg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_OFFLINE);
}
/**
* Mark the beginning of PATH TOV handling. IO completion callbacks
* are still pending.
*/
void
bfa_cb_itnim_tov_begin(void *cb_arg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
}
/**
* Mark the end of PATH TOV handling. All pending IOs are already cleaned up.
*/
void
bfa_cb_itnim_tov(void *cb_arg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_fcb_itnim_tov(itnim->itnim_drv);
}
/**
* BFA notification to FCS/driver for second level error recovery.
*
* Atleast one I/O request has timedout and target is unresponsive to
* repeated abort requests. Second level error recovery should be initiated
* by starting implicit logout and recovery procedures.
*/
void
bfa_cb_itnim_sler(void *cb_arg)
{
struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg;
itnim->stats.sler++;
bfa_trc(itnim->fcs, itnim->rport->pwwn);
bfa_fcs_rport_logo_imp(itnim->rport);
}
struct bfa_fcs_itnim_s *
bfa_fcs_itnim_lookup(struct bfa_fcs_port_s *port, wwn_t rpwwn)
{
struct bfa_fcs_rport_s *rport;
rport = bfa_fcs_rport_lookup(port, rpwwn);
if (!rport)
return NULL;
bfa_assert(rport->itnim != NULL);
return rport->itnim;
}
bfa_status_t
bfa_fcs_itnim_attr_get(struct bfa_fcs_port_s *port, wwn_t rpwwn,
struct bfa_itnim_attr_s *attr)
{
struct bfa_fcs_itnim_s *itnim = NULL;
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
if (itnim == NULL)
return BFA_STATUS_NO_FCPIM_NEXUS;
attr->state = bfa_sm_to_state(itnim_sm_table, itnim->sm);
attr->retry = itnim->seq_rec;
attr->rec_support = itnim->rec_support;
attr->conf_comp = itnim->conf_comp;
attr->task_retry_id = itnim->task_retry_id;
bfa_os_memset(&attr->io_latency, 0, sizeof(struct bfa_itnim_latency_s));
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcs_itnim_stats_get(struct bfa_fcs_port_s *port, wwn_t rpwwn,
struct bfa_itnim_stats_s *stats)
{
struct bfa_fcs_itnim_s *itnim = NULL;
bfa_assert(port != NULL);
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
if (itnim == NULL)
return BFA_STATUS_NO_FCPIM_NEXUS;
bfa_os_memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s));
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcs_itnim_stats_clear(struct bfa_fcs_port_s *port, wwn_t rpwwn)
{
struct bfa_fcs_itnim_s *itnim = NULL;
bfa_assert(port != NULL);
itnim = bfa_fcs_itnim_lookup(port, rpwwn);
if (itnim == NULL)
return BFA_STATUS_NO_FCPIM_NEXUS;
bfa_os_memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s));
return BFA_STATUS_OK;
}
void
bfa_fcs_fcpim_uf_recv(struct bfa_fcs_itnim_s *itnim, struct fchs_s *fchs,
u16 len)
{
struct fc_els_cmd_s *els_cmd;
bfa_trc(itnim->fcs, fchs->type);
if (fchs->type != FC_TYPE_ELS)
return;
els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
bfa_trc(itnim->fcs, els_cmd->els_code);
switch (els_cmd->els_code) {
case FC_ELS_PRLO:
bfa_fcs_rport_prlo(itnim->rport, fchs->ox_id);
break;
default:
bfa_assert(0);
}
}
void
bfa_fcs_itnim_pause(struct bfa_fcs_itnim_s *itnim)
{
}
void
bfa_fcs_itnim_resume(struct bfa_fcs_itnim_s *itnim)
{
}