blob: c43852f97f2530f4fe5bee4578960b449664777c [file] [log] [blame]
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2004-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.broadcom.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/lockdep.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>
#include <linux/nvme-fc-driver.h>
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc.h"
#include "lpfc_scsi.h"
#include "lpfc_nvme.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"
/* AlpaArray for assignment of scsid for scan-down and bind_method */
static uint8_t lpfcAlpaArray[] = {
0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
};
static void lpfc_disc_timeout_handler(struct lpfc_vport *);
static void lpfc_disc_flush_list(struct lpfc_vport *vport);
static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *);
static int lpfc_fcf_inuse(struct lpfc_hba *);
void
lpfc_terminate_rport_io(struct fc_rport *rport)
{
struct lpfc_rport_data *rdata;
struct lpfc_nodelist * ndlp;
struct lpfc_hba *phba;
rdata = rport->dd_data;
ndlp = rdata->pnode;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
printk(KERN_ERR "Cannot find remote node"
" to terminate I/O Data x%x\n",
rport->port_id);
return;
}
phba = ndlp->phba;
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
"rport terminate: sid:x%x did:x%x flg:x%x",
ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
if (ndlp->nlp_sid != NLP_NO_SID) {
lpfc_sli_abort_iocb(ndlp->vport,
&phba->sli.sli3_ring[LPFC_FCP_RING],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
}
/*
* This function will be called when dev_loss_tmo fire.
*/
void
lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
{
struct lpfc_rport_data *rdata;
struct lpfc_nodelist * ndlp;
struct lpfc_vport *vport;
struct Scsi_Host *shost;
struct lpfc_hba *phba;
struct lpfc_work_evt *evtp;
int put_node;
int put_rport;
rdata = rport->dd_data;
ndlp = rdata->pnode;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
return;
vport = ndlp->vport;
phba = vport->phba;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport devlosscb: sid:x%x did:x%x flg:x%x",
ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
"3181 dev_loss_callbk x%06x, rport %p flg x%x\n",
ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
/* Don't defer this if we are in the process of deleting the vport
* or unloading the driver. The unload will cleanup the node
* appropriately we just need to cleanup the ndlp rport info here.
*/
if (vport->load_flag & FC_UNLOADING) {
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
return;
}
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
return;
if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
"6789 rport name %llx != node port name %llx",
rport->port_name,
wwn_to_u64(ndlp->nlp_portname.u.wwn));
evtp = &ndlp->dev_loss_evt;
if (!list_empty(&evtp->evt_listp)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
"6790 rport name %llx dev_loss_evt pending",
rport->port_name);
return;
}
shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
spin_unlock_irq(shost->host_lock);
/* We need to hold the node by incrementing the reference
* count until this queued work is done
*/
evtp->evt_arg1 = lpfc_nlp_get(ndlp);
spin_lock_irq(&phba->hbalock);
if (evtp->evt_arg1) {
evtp->evt = LPFC_EVT_DEV_LOSS;
list_add_tail(&evtp->evt_listp, &phba->work_list);
lpfc_worker_wake_up(phba);
}
spin_unlock_irq(&phba->hbalock);
return;
}
/**
* lpfc_dev_loss_tmo_handler - Remote node devloss timeout handler
* @ndlp: Pointer to remote node object.
*
* This function is called from the worker thread when devloss timeout timer
* expires. For SLI4 host, this routine shall return 1 when at lease one
* remote node, including this @ndlp, is still in use of FCF; otherwise, this
* routine shall return 0 when there is no remote node is still in use of FCF
* when devloss timeout happened to this @ndlp.
**/
static int
lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
{
struct lpfc_rport_data *rdata;
struct fc_rport *rport;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
struct Scsi_Host *shost;
uint8_t *name;
int put_node;
int warn_on = 0;
int fcf_inuse = 0;
rport = ndlp->rport;
vport = ndlp->vport;
shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
spin_unlock_irq(shost->host_lock);
if (!rport)
return fcf_inuse;
name = (uint8_t *) &ndlp->nlp_portname;
phba = vport->phba;
if (phba->sli_rev == LPFC_SLI_REV4)
fcf_inuse = lpfc_fcf_inuse(phba);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport devlosstmo:did:x%x type:x%x id:x%x",
ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
"3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
/*
* lpfc_nlp_remove if reached with dangling rport drops the
* reference. To make sure that does not happen clear rport
* pointer in ndlp before lpfc_nlp_put.
*/
rdata = rport->dd_data;
/* Don't defer this if we are in the process of deleting the vport
* or unloading the driver. The unload will cleanup the node
* appropriately we just need to cleanup the ndlp rport info here.
*/
if (vport->load_flag & FC_UNLOADING) {
if (ndlp->nlp_sid != NLP_NO_SID) {
/* flush the target */
lpfc_sli_abort_iocb(vport,
&phba->sli.sli3_ring[LPFC_FCP_RING],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
put_node = rdata->pnode != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
put_device(&rport->dev);
return fcf_inuse;
}
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0284 Devloss timeout Ignored on "
"WWPN %x:%x:%x:%x:%x:%x:%x:%x "
"NPort x%x\n",
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID);
return fcf_inuse;
}
put_node = rdata->pnode != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
put_device(&rport->dev);
if (ndlp->nlp_type & NLP_FABRIC)
return fcf_inuse;
if (ndlp->nlp_sid != NLP_NO_SID) {
warn_on = 1;
lpfc_sli_abort_iocb(vport, &phba->sli.sli3_ring[LPFC_FCP_RING],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
if (warn_on) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0203 Devloss timeout on "
"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
"NPort x%06x Data: x%x x%x x%x\n",
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
} else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0204 Devloss timeout on "
"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
"NPort x%06x Data: x%x x%x x%x\n",
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
}
if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
!(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
(ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) &&
(ndlp->nlp_state != NLP_STE_PRLI_ISSUE))
lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
return fcf_inuse;
}
/**
* lpfc_sli4_post_dev_loss_tmo_handler - SLI4 post devloss timeout handler
* @phba: Pointer to hba context object.
* @fcf_inuse: SLI4 FCF in-use state reported from devloss timeout handler.
* @nlp_did: remote node identifer with devloss timeout.
*
* This function is called from the worker thread after invoking devloss
* timeout handler and releasing the reference count for the ndlp with
* which the devloss timeout was handled for SLI4 host. For the devloss
* timeout of the last remote node which had been in use of FCF, when this
* routine is invoked, it shall be guaranteed that none of the remote are
* in-use of FCF. When devloss timeout to the last remote using the FCF,
* if the FIP engine is neither in FCF table scan process nor roundrobin
* failover process, the in-use FCF shall be unregistered. If the FIP
* engine is in FCF discovery process, the devloss timeout state shall
* be set for either the FCF table scan process or roundrobin failover
* process to unregister the in-use FCF.
**/
static void
lpfc_sli4_post_dev_loss_tmo_handler(struct lpfc_hba *phba, int fcf_inuse,
uint32_t nlp_did)
{
/* If devloss timeout happened to a remote node when FCF had no
* longer been in-use, do nothing.
*/
if (!fcf_inuse)
return;
if ((phba->hba_flag & HBA_FIP_SUPPORT) && !lpfc_fcf_inuse(phba)) {
spin_lock_irq(&phba->hbalock);
if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
if (phba->hba_flag & HBA_DEVLOSS_TMO) {
spin_unlock_irq(&phba->hbalock);
return;
}
phba->hba_flag |= HBA_DEVLOSS_TMO;
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2847 Last remote node (x%x) using "
"FCF devloss tmo\n", nlp_did);
}
if (phba->fcf.fcf_flag & FCF_REDISC_PROG) {
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2868 Devloss tmo to FCF rediscovery "
"in progress\n");
return;
}
if (!(phba->hba_flag & (FCF_TS_INPROG | FCF_RR_INPROG))) {
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2869 Devloss tmo to idle FIP engine, "
"unreg in-use FCF and rescan.\n");
/* Unregister in-use FCF and rescan */
lpfc_unregister_fcf_rescan(phba);
return;
}
spin_unlock_irq(&phba->hbalock);
if (phba->hba_flag & FCF_TS_INPROG)
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2870 FCF table scan in progress\n");
if (phba->hba_flag & FCF_RR_INPROG)
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2871 FLOGI roundrobin FCF failover "
"in progress\n");
}
lpfc_unregister_unused_fcf(phba);
}
/**
* lpfc_alloc_fast_evt - Allocates data structure for posting event
* @phba: Pointer to hba context object.
*
* This function is called from the functions which need to post
* events from interrupt context. This function allocates data
* structure required for posting event. It also keeps track of
* number of events pending and prevent event storm when there are
* too many events.
**/
struct lpfc_fast_path_event *
lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
struct lpfc_fast_path_event *ret;
/* If there are lot of fast event do not exhaust memory due to this */
if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
return NULL;
ret = kzalloc(sizeof(struct lpfc_fast_path_event),
GFP_ATOMIC);
if (ret) {
atomic_inc(&phba->fast_event_count);
INIT_LIST_HEAD(&ret->work_evt.evt_listp);
ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
}
return ret;
}
/**
* lpfc_free_fast_evt - Frees event data structure
* @phba: Pointer to hba context object.
* @evt: Event object which need to be freed.
*
* This function frees the data structure required for posting
* events.
**/
void
lpfc_free_fast_evt(struct lpfc_hba *phba,
struct lpfc_fast_path_event *evt) {
atomic_dec(&phba->fast_event_count);
kfree(evt);
}
/**
* lpfc_send_fastpath_evt - Posts events generated from fast path
* @phba: Pointer to hba context object.
* @evtp: Event data structure.
*
* This function is called from worker thread, when the interrupt
* context need to post an event. This function posts the event
* to fc transport netlink interface.
**/
static void
lpfc_send_fastpath_evt(struct lpfc_hba *phba,
struct lpfc_work_evt *evtp)
{
unsigned long evt_category, evt_sub_category;
struct lpfc_fast_path_event *fast_evt_data;
char *evt_data;
uint32_t evt_data_size;
struct Scsi_Host *shost;
fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
work_evt);
evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
evt_sub_category = (unsigned long) fast_evt_data->un.
fabric_evt.subcategory;
shost = lpfc_shost_from_vport(fast_evt_data->vport);
if (evt_category == FC_REG_FABRIC_EVENT) {
if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
evt_data = (char *) &fast_evt_data->un.read_check_error;
evt_data_size = sizeof(fast_evt_data->un.
read_check_error);
} else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
(evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
evt_data = (char *) &fast_evt_data->un.fabric_evt;
evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
} else {
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
} else if (evt_category == FC_REG_SCSI_EVENT) {
switch (evt_sub_category) {
case LPFC_EVENT_QFULL:
case LPFC_EVENT_DEVBSY:
evt_data = (char *) &fast_evt_data->un.scsi_evt;
evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
break;
case LPFC_EVENT_CHECK_COND:
evt_data = (char *) &fast_evt_data->un.check_cond_evt;
evt_data_size = sizeof(fast_evt_data->un.
check_cond_evt);
break;
case LPFC_EVENT_VARQUEDEPTH:
evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
evt_data_size = sizeof(fast_evt_data->un.
queue_depth_evt);
break;
default:
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
} else {
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
if (phba->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
fc_host_post_vendor_event(shost,
fc_get_event_number(),
evt_data_size,
evt_data,
LPFC_NL_VENDOR_ID);
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
static void
lpfc_work_list_done(struct lpfc_hba *phba)
{
struct lpfc_work_evt *evtp = NULL;
struct lpfc_nodelist *ndlp;
int free_evt;
int fcf_inuse;
uint32_t nlp_did;
spin_lock_irq(&phba->hbalock);
while (!list_empty(&phba->work_list)) {
list_remove_head((&phba->work_list), evtp, typeof(*evtp),
evt_listp);
spin_unlock_irq(&phba->hbalock);
free_evt = 1;
switch (evtp->evt) {
case LPFC_EVT_ELS_RETRY:
ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
lpfc_els_retry_delay_handler(ndlp);
free_evt = 0; /* evt is part of ndlp */
/* decrement the node reference count held
* for this queued work
*/
lpfc_nlp_put(ndlp);
break;
case LPFC_EVT_DEV_LOSS:
ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
fcf_inuse = lpfc_dev_loss_tmo_handler(ndlp);
free_evt = 0;
/* decrement the node reference count held for
* this queued work
*/
nlp_did = ndlp->nlp_DID;
lpfc_nlp_put(ndlp);
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_post_dev_loss_tmo_handler(phba,
fcf_inuse,
nlp_did);
break;
case LPFC_EVT_ONLINE:
if (phba->link_state < LPFC_LINK_DOWN)
*(int *) (evtp->evt_arg1) = lpfc_online(phba);
else
*(int *) (evtp->evt_arg1) = 0;
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_OFFLINE_PREP:
if (phba->link_state >= LPFC_LINK_DOWN)
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
*(int *)(evtp->evt_arg1) = 0;
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_OFFLINE:
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
*(int *)(evtp->evt_arg1) =
lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_WARM_START:
lpfc_offline(phba);
lpfc_reset_barrier(phba);
lpfc_sli_brdreset(phba);
lpfc_hba_down_post(phba);
*(int *)(evtp->evt_arg1) =
lpfc_sli_brdready(phba, HS_MBRDY);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_KILL:
lpfc_offline(phba);
*(int *)(evtp->evt_arg1)
= (phba->pport->stopped)
? 0 : lpfc_sli_brdkill(phba);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_FASTPATH_MGMT_EVT:
lpfc_send_fastpath_evt(phba, evtp);
free_evt = 0;
break;
case LPFC_EVT_RESET_HBA:
if (!(phba->pport->load_flag & FC_UNLOADING))
lpfc_reset_hba(phba);
break;
}
if (free_evt)
kfree(evtp);
spin_lock_irq(&phba->hbalock);
}
spin_unlock_irq(&phba->hbalock);
}
static void
lpfc_work_done(struct lpfc_hba *phba)
{
struct lpfc_sli_ring *pring;
uint32_t ha_copy, status, control, work_port_events;
struct lpfc_vport **vports;
struct lpfc_vport *vport;
int i;
spin_lock_irq(&phba->hbalock);
ha_copy = phba->work_ha;
phba->work_ha = 0;
spin_unlock_irq(&phba->hbalock);
/* First, try to post the next mailbox command to SLI4 device */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
lpfc_sli4_post_async_mbox(phba);
if (ha_copy & HA_ERATT)
/* Handle the error attention event */
lpfc_handle_eratt(phba);
if (ha_copy & HA_MBATT)
lpfc_sli_handle_mb_event(phba);
if (ha_copy & HA_LATT)
lpfc_handle_latt(phba);
/* Process SLI4 events */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
if (phba->hba_flag & HBA_RRQ_ACTIVE)
lpfc_handle_rrq_active(phba);
if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
lpfc_sli4_els_xri_abort_event_proc(phba);
if (phba->hba_flag & ASYNC_EVENT)
lpfc_sli4_async_event_proc(phba);
if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
spin_unlock_irq(&phba->hbalock);
lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
}
if (phba->fcf.fcf_flag & FCF_REDISC_EVT)
lpfc_sli4_fcf_redisc_event_proc(phba);
}
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vports; i++) {
/*
* We could have no vports in array if unloading, so if
* this happens then just use the pport
*/
if (vports[i] == NULL && i == 0)
vport = phba->pport;
else
vport = vports[i];
if (vport == NULL)
break;
spin_lock_irq(&vport->work_port_lock);
work_port_events = vport->work_port_events;
vport->work_port_events &= ~work_port_events;
spin_unlock_irq(&vport->work_port_lock);
if (work_port_events & WORKER_DISC_TMO)
lpfc_disc_timeout_handler(vport);
if (work_port_events & WORKER_ELS_TMO)
lpfc_els_timeout_handler(vport);
if (work_port_events & WORKER_HB_TMO)
lpfc_hb_timeout_handler(phba);
if (work_port_events & WORKER_MBOX_TMO)
lpfc_mbox_timeout_handler(phba);
if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
lpfc_unblock_fabric_iocbs(phba);
if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
lpfc_ramp_down_queue_handler(phba);
if (work_port_events & WORKER_DELAYED_DISC_TMO)
lpfc_delayed_disc_timeout_handler(vport);
}
lpfc_destroy_vport_work_array(phba, vports);
pring = lpfc_phba_elsring(phba);
status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
status >>= (4*LPFC_ELS_RING);
if (pring && (status & HA_RXMASK ||
pring->flag & LPFC_DEFERRED_RING_EVENT ||
phba->hba_flag & HBA_SP_QUEUE_EVT)) {
if (pring->flag & LPFC_STOP_IOCB_EVENT) {
pring->flag |= LPFC_DEFERRED_RING_EVENT;
/* Preserve legacy behavior. */
if (!(phba->hba_flag & HBA_SP_QUEUE_EVT))
set_bit(LPFC_DATA_READY, &phba->data_flags);
} else {
if (phba->link_state >= LPFC_LINK_UP ||
phba->link_flag & LS_MDS_LOOPBACK) {
pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
lpfc_sli_handle_slow_ring_event(phba, pring,
(status &
HA_RXMASK));
}
}
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_drain_txq(phba);
/*
* Turn on Ring interrupts
*/
if (phba->sli_rev <= LPFC_SLI_REV3) {
spin_lock_irq(&phba->hbalock);
control = readl(phba->HCregaddr);
if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
lpfc_debugfs_slow_ring_trc(phba,
"WRK Enable ring: cntl:x%x hacopy:x%x",
control, ha_copy, 0);
control |= (HC_R0INT_ENA << LPFC_ELS_RING);
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
} else {
lpfc_debugfs_slow_ring_trc(phba,
"WRK Ring ok: cntl:x%x hacopy:x%x",
control, ha_copy, 0);
}
spin_unlock_irq(&phba->hbalock);
}
}
lpfc_work_list_done(phba);
}
int
lpfc_do_work(void *p)
{
struct lpfc_hba *phba = p;
int rc;
set_user_nice(current, MIN_NICE);
current->flags |= PF_NOFREEZE;
phba->data_flags = 0;
while (!kthread_should_stop()) {
/* wait and check worker queue activities */
rc = wait_event_interruptible(phba->work_waitq,
(test_and_clear_bit(LPFC_DATA_READY,
&phba->data_flags)
|| kthread_should_stop()));
/* Signal wakeup shall terminate the worker thread */
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
"0433 Wakeup on signal: rc=x%x\n", rc);
break;
}
/* Attend pending lpfc data processing */
lpfc_work_done(phba);
}
phba->worker_thread = NULL;
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"0432 Worker thread stopped.\n");
return 0;
}
/*
* This is only called to handle FC worker events. Since this a rare
* occurrence, we allocate a struct lpfc_work_evt structure here instead of
* embedding it in the IOCB.
*/
int
lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2,
uint32_t evt)
{
struct lpfc_work_evt *evtp;
unsigned long flags;
/*
* All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
* be queued to worker thread for processing
*/
evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC);
if (!evtp)
return 0;
evtp->evt_arg1 = arg1;
evtp->evt_arg2 = arg2;
evtp->evt = evt;
spin_lock_irqsave(&phba->hbalock, flags);
list_add_tail(&evtp->evt_listp, &phba->work_list);
spin_unlock_irqrestore(&phba->hbalock, flags);
lpfc_worker_wake_up(phba);
return 1;
}
void
lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp, *next_ndlp;
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
continue;
if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
((vport->port_type == LPFC_NPIV_PORT) &&
(ndlp->nlp_DID == NameServer_DID)))
lpfc_unreg_rpi(vport, ndlp);
/* Leave Fabric nodes alone on link down */
if ((phba->sli_rev < LPFC_SLI_REV4) &&
(!remove && ndlp->nlp_type & NLP_FABRIC))
continue;
lpfc_disc_state_machine(vport, ndlp, NULL,
remove
? NLP_EVT_DEVICE_RM
: NLP_EVT_DEVICE_RECOVERY);
}
if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
}
}
void
lpfc_port_link_failure(struct lpfc_vport *vport)
{
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
/* Cleanup any outstanding received buffers */
lpfc_cleanup_rcv_buffers(vport);
/* Cleanup any outstanding RSCN activity */
lpfc_els_flush_rscn(vport);
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_cmd(vport);
lpfc_cleanup_rpis(vport, 0);
/* Turn off discovery timer if its running */
lpfc_can_disctmo(vport);
}
void
lpfc_linkdown_port(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
fc_host_post_event(shost, fc_get_event_number(),
FCH_EVT_LINKDOWN, 0);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Link Down: state:x%x rtry:x%x flg:x%x",
vport->port_state, vport->fc_ns_retry, vport->fc_flag);
lpfc_port_link_failure(vport);
/* Stop delayed Nport discovery */
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_DISC_DELAYED;
spin_unlock_irq(shost->host_lock);
del_timer_sync(&vport->delayed_disc_tmo);
}
int
lpfc_linkdown(struct lpfc_hba *phba)
{
struct lpfc_vport *vport = phba->pport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_vport **vports;
LPFC_MBOXQ_t *mb;
int i;
if (phba->link_state == LPFC_LINK_DOWN)
return 0;
/* Block all SCSI stack I/Os */
lpfc_scsi_dev_block(phba);
phba->defer_flogi_acc_flag = false;
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
spin_unlock_irq(&phba->hbalock);
if (phba->link_state > LPFC_LINK_DOWN) {
phba->link_state = LPFC_LINK_DOWN;
if (phba->sli4_hba.conf_trunk) {
phba->trunk_link.link0.state = 0;
phba->trunk_link.link1.state = 0;
phba->trunk_link.link2.state = 0;
phba->trunk_link.link3.state = 0;
}
spin_lock_irq(shost->host_lock);
phba->pport->fc_flag &= ~FC_LBIT;
spin_unlock_irq(shost->host_lock);
}
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL) {
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
/* Issue a LINK DOWN event to all nodes */
lpfc_linkdown_port(vports[i]);
vports[i]->fc_myDID = 0;
if ((vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH) ||
(vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
if (phba->nvmet_support)
lpfc_nvmet_update_targetport(phba);
else
lpfc_nvme_update_localport(vports[i]);
}
}
}
lpfc_destroy_vport_work_array(phba, vports);
/* Clean up any SLI3 firmware default rpi's */
if (phba->sli_rev > LPFC_SLI_REV3)
goto skip_unreg_did;
mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mb) {
lpfc_unreg_did(phba, 0xffff, LPFC_UNREG_ALL_DFLT_RPIS, mb);
mb->vport = vport;
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
mempool_free(mb, phba->mbox_mem_pool);
}
}
skip_unreg_did:
/* Setup myDID for link up if we are in pt2pt mode */
if (phba->pport->fc_flag & FC_PT2PT) {
mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mb) {
lpfc_config_link(phba, mb);
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mb->vport = vport;
if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
mempool_free(mb, phba->mbox_mem_pool);
}
}
spin_lock_irq(shost->host_lock);
phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
phba->pport->rcv_flogi_cnt = 0;
spin_unlock_irq(shost->host_lock);
}
return 0;
}
static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp;
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
continue;
if (ndlp->nlp_type & NLP_FABRIC) {
/* On Linkup its safe to clean up the ndlp
* from Fabric connections.
*/
if (ndlp->nlp_DID != Fabric_DID)
lpfc_unreg_rpi(vport, ndlp);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
/* Fail outstanding IO now since device is
* marked for PLOGI.
*/
lpfc_unreg_rpi(vport, ndlp);
}
}
}
static void
lpfc_linkup_port(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
if ((vport->load_flag & FC_UNLOADING) != 0)
return;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Link Up: top:x%x speed:x%x flg:x%x",
phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
/* If NPIV is not enabled, only bring the physical port up */
if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(vport != phba->pport))
return;
if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
fc_host_post_event(shost, fc_get_event_number(),
FCH_EVT_LINKUP, 0);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
vport->fc_flag |= FC_NDISC_ACTIVE;
vport->fc_ns_retry = 0;
spin_unlock_irq(shost->host_lock);
if (vport->fc_flag & FC_LBIT)
lpfc_linkup_cleanup_nodes(vport);
}
static int
lpfc_linkup(struct lpfc_hba *phba)
{
struct lpfc_vport **vports;
int i;
struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
phba->link_state = LPFC_LINK_UP;
/* Unblock fabric iocbs if they are blocked */
clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
del_timer_sync(&phba->fabric_block_timer);
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
lpfc_linkup_port(vports[i]);
lpfc_destroy_vport_work_array(phba, vports);
/* Clear the pport flogi counter in case the link down was
* absorbed without an ACQE. No lock here - in worker thread
* and discovery is synchronized.
*/
spin_lock_irq(shost->host_lock);
phba->pport->rcv_flogi_cnt = 0;
spin_unlock_irq(shost->host_lock);
/* reinitialize initial FLOGI flag */
phba->hba_flag &= ~(HBA_FLOGI_ISSUED);
phba->defer_flogi_acc_flag = false;
return 0;
}
/*
* This routine handles processing a CLEAR_LA mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer. SLI3 only.
*/
static void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_sli *psli = &phba->sli;
MAILBOX_t *mb = &pmb->u.mb;
uint32_t control;
/* Since we don't do discovery right now, turn these off here */
psli->sli3_ring[LPFC_EXTRA_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->sli3_ring[LPFC_FCP_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
/* Check for error */
if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
/* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0320 CLEAR_LA mbxStatus error x%x hba "
"state x%x\n",
mb->mbxStatus, vport->port_state);
phba->link_state = LPFC_HBA_ERROR;
goto out;
}
if (vport->port_type == LPFC_PHYSICAL_PORT)
phba->link_state = LPFC_HBA_READY;
spin_lock_irq(&phba->hbalock);
psli->sli_flag |= LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(&phba->hbalock);
mempool_free(pmb, phba->mbox_mem_pool);
return;
out:
/* Device Discovery completes */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0225 Device Discovery completes\n");
mempool_free(pmb, phba->mbox_mem_pool);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_ABORT_DISCOVERY;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
/* turn on Link Attention interrupts */
spin_lock_irq(&phba->hbalock);
psli->sli_flag |= LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(&phba->hbalock);
return;
}
void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
uint8_t bbscn = 0;
if (pmb->u.mb.mbxStatus)
goto out;
mempool_free(pmb, phba->mbox_mem_pool);
/* don't perform discovery for SLI4 loopback diagnostic test */
if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(phba->hba_flag & HBA_FCOE_MODE) &&
(phba->link_flag & LS_LOOPBACK_MODE))
return;
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
vport->fc_flag & FC_PUBLIC_LOOP &&
!(vport->fc_flag & FC_LBIT)) {
/* Need to wait for FAN - use discovery timer
* for timeout. port_state is identically
* LPFC_LOCAL_CFG_LINK while waiting for FAN
*/
lpfc_set_disctmo(vport);
return;
}
/* Start discovery by sending a FLOGI. port_state is identically
* LPFC_FLOGI while waiting for FLOGI cmpl
*/
if (vport->port_state != LPFC_FLOGI) {
if (phba->bbcredit_support && phba->cfg_enable_bbcr) {
bbscn = bf_get(lpfc_bbscn_def,
&phba->sli4_hba.bbscn_params);
vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
vport->fc_sparam.cmn.bbRcvSizeMsb |= (bbscn << 4);
}
lpfc_initial_flogi(vport);
} else if (vport->fc_flag & FC_PT2PT) {
lpfc_disc_start(vport);
}
return;
out:
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0306 CONFIG_LINK mbxStatus error x%x "
"HBA state x%x\n",
pmb->u.mb.mbxStatus, vport->port_state);
mempool_free(pmb, phba->mbox_mem_pool);
lpfc_linkdown(phba);
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0200 CONFIG_LINK bad hba state x%x\n",
vport->port_state);
lpfc_issue_clear_la(phba, vport);
return;
}
/**
* lpfc_sli4_clear_fcf_rr_bmask
* @phba pointer to the struct lpfc_hba for this port.
* This fucnction resets the round robin bit mask and clears the
* fcf priority list. The list deletions are done while holding the
* hbalock. The ON_LIST flag and the FLOGI_FAILED flags are cleared
* from the lpfc_fcf_pri record.
**/
void
lpfc_sli4_clear_fcf_rr_bmask(struct lpfc_hba *phba)
{
struct lpfc_fcf_pri *fcf_pri;
struct lpfc_fcf_pri *next_fcf_pri;
memset(phba->fcf.fcf_rr_bmask, 0, sizeof(*phba->fcf.fcf_rr_bmask));
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(fcf_pri, next_fcf_pri,
&phba->fcf.fcf_pri_list, list) {
list_del_init(&fcf_pri->list);
fcf_pri->fcf_rec.flag = 0;
}
spin_unlock_irq(&phba->hbalock);
}
static void
lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct lpfc_vport *vport = mboxq->vport;
if (mboxq->u.mb.mbxStatus) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"2017 REG_FCFI mbxStatus error x%x "
"HBA state x%x\n",
mboxq->u.mb.mbxStatus, vport->port_state);
goto fail_out;
}
/* Start FCoE discovery by sending a FLOGI. */
phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, &mboxq->u.mqe.un.reg_fcfi);
/* Set the FCFI registered flag */
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag |= FCF_REGISTERED;
spin_unlock_irq(&phba->hbalock);
/* If there is a pending FCoE event, restart FCF table scan. */
if ((!(phba->hba_flag & FCF_RR_INPROG)) &&
lpfc_check_pending_fcoe_event(phba, LPFC_UNREG_FCF))
goto fail_out;
/* Mark successful completion of FCF table scan */
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
phba->hba_flag &= ~FCF_TS_INPROG;
if (vport->port_state != LPFC_FLOGI) {
phba->hba_flag |= FCF_RR_INPROG;
spin_unlock_irq(&phba->hbalock);
lpfc_issue_init_vfi(vport);
goto out;
}
spin_unlock_irq(&phba->hbalock);
goto out;
fail_out:
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~FCF_RR_INPROG;
spin_unlock_irq(&phba->hbalock);
out:
mempool_free(mboxq, phba->mbox_mem_pool);
}
/**
* lpfc_fab_name_match - Check if the fcf fabric name match.
* @fab_name: pointer to fabric name.
* @new_fcf_record: pointer to fcf record.
*
* This routine compare the fcf record's fabric name with provided
* fabric name. If the fabric name are identical this function
* returns 1 else return 0.
**/
static uint32_t
lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record)
{
if (fab_name[0] != bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record))
return 0;
if (fab_name[1] != bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record))
return 0;
if (fab_name[2] != bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record))
return 0;
if (fab_name[3] != bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record))
return 0;
if (fab_name[4] != bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record))
return 0;
if (fab_name[5] != bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record))
return 0;
if (fab_name[6] != bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record))
return 0;
if (fab_name[7] != bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record))
return 0;
return 1;
}
/**
* lpfc_sw_name_match - Check if the fcf switch name match.
* @fab_name: pointer to fabric name.
* @new_fcf_record: pointer to fcf record.
*
* This routine compare the fcf record's switch name with provided
* switch name. If the switch name are identical this function
* returns 1 else return 0.
**/
static uint32_t
lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record)
{
if (sw_name[0] != bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record))
return 0;
if (sw_name[1] != bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record))
return 0;
if (sw_name[2] != bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record))
return 0;
if (sw_name[3] != bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record))
return 0;
if (sw_name[4] != bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record))
return 0;
if (sw_name[5] != bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record))
return 0;
if (sw_name[6] != bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record))
return 0;
if (sw_name[7] != bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))
return 0;
return 1;
}
/**
* lpfc_mac_addr_match - Check if the fcf mac address match.
* @mac_addr: pointer to mac address.
* @new_fcf_record: pointer to fcf record.
*
* This routine compare the fcf record's mac address with HBA's
* FCF mac address. If the mac addresses are identical this function
* returns 1 else return 0.
**/
static uint32_t
lpfc_mac_addr_match(uint8_t *mac_addr, struct fcf_record *new_fcf_record)
{
if (mac_addr[0] != bf_get(lpfc_fcf_record_mac_0, new_fcf_record))
return 0;
if (mac_addr[1] != bf_get(lpfc_fcf_record_mac_1, new_fcf_record))
return 0;
if (mac_addr[2] != bf_get(lpfc_fcf_record_mac_2, new_fcf_record))
return 0;
if (mac_addr[3] != bf_get(lpfc_fcf_record_mac_3, new_fcf_record))
return 0;
if (mac_addr[4] != bf_get(lpfc_fcf_record_mac_4, new_fcf_record))
return 0;
if (mac_addr[5] != bf_get(lpfc_fcf_record_mac_5, new_fcf_record))
return 0;
return 1;
}
static bool
lpfc_vlan_id_match(uint16_t curr_vlan_id, uint16_t new_vlan_id)
{
return (curr_vlan_id == new_vlan_id);
}
/**
* lpfc_update_fcf_record - Update driver fcf record
* __lpfc_update_fcf_record_pri - update the lpfc_fcf_pri record.
* @phba: pointer to lpfc hba data structure.
* @fcf_index: Index for the lpfc_fcf_record.
* @new_fcf_record: pointer to hba fcf record.
*
* This routine updates the driver FCF priority record from the new HBA FCF
* record. This routine is called with the host lock held.
**/
static void
__lpfc_update_fcf_record_pri(struct lpfc_hba *phba, uint16_t fcf_index,
struct fcf_record *new_fcf_record
)
{
struct lpfc_fcf_pri *fcf_pri;
lockdep_assert_held(&phba->hbalock);
fcf_pri = &phba->fcf.fcf_pri[fcf_index];
fcf_pri->fcf_rec.fcf_index = fcf_index;
/* FCF record priority */
fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
}
/**
* lpfc_copy_fcf_record - Copy fcf information to lpfc_hba.
* @fcf: pointer to driver fcf record.
* @new_fcf_record: pointer to fcf record.
*
* This routine copies the FCF information from the FCF
* record to lpfc_hba data structure.
**/
static void
lpfc_copy_fcf_record(struct lpfc_fcf_rec *fcf_rec,
struct fcf_record *new_fcf_record)
{
/* Fabric name */
fcf_rec->fabric_name[0] =
bf_get(lpfc_fcf_record_fab_name_0, new_fcf_record);
fcf_rec->fabric_name[1] =
bf_get(lpfc_fcf_record_fab_name_1, new_fcf_record);
fcf_rec->fabric_name[2] =
bf_get(lpfc_fcf_record_fab_name_2, new_fcf_record);
fcf_rec->fabric_name[3] =
bf_get(lpfc_fcf_record_fab_name_3, new_fcf_record);
fcf_rec->fabric_name[4] =
bf_get(lpfc_fcf_record_fab_name_4, new_fcf_record);
fcf_rec->fabric_name[5] =
bf_get(lpfc_fcf_record_fab_name_5, new_fcf_record);
fcf_rec->fabric_name[6] =
bf_get(lpfc_fcf_record_fab_name_6, new_fcf_record);
fcf_rec->fabric_name[7] =
bf_get(lpfc_fcf_record_fab_name_7, new_fcf_record);
/* Mac address */
fcf_rec->mac_addr[0] = bf_get(lpfc_fcf_record_mac_0, new_fcf_record);
fcf_rec->mac_addr[1] = bf_get(lpfc_fcf_record_mac_1, new_fcf_record);
fcf_rec->mac_addr[2] = bf_get(lpfc_fcf_record_mac_2, new_fcf_record);
fcf_rec->mac_addr[3] = bf_get(lpfc_fcf_record_mac_3, new_fcf_record);
fcf_rec->mac_addr[4] = bf_get(lpfc_fcf_record_mac_4, new_fcf_record);
fcf_rec->mac_addr[5] = bf_get(lpfc_fcf_record_mac_5, new_fcf_record);
/* FCF record index */
fcf_rec->fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
/* FCF record priority */
fcf_rec->priority = new_fcf_record->fip_priority;
/* Switch name */
fcf_rec->switch_name[0] =
bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record);
fcf_rec->switch_name[1] =
bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record);
fcf_rec->switch_name[2] =
bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record);
fcf_rec->switch_name[3] =
bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record);
fcf_rec->switch_name[4] =
bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record);
fcf_rec->switch_name[5] =
bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record);
fcf_rec->switch_name[6] =
bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record);
fcf_rec->switch_name[7] =
bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record);
}
/**
* lpfc_update_fcf_record - Update driver fcf record
* @phba: pointer to lpfc hba data structure.
* @fcf_rec: pointer to driver fcf record.
* @new_fcf_record: pointer to hba fcf record.
* @addr_mode: address mode to be set to the driver fcf record.
* @vlan_id: vlan tag to be set to the driver fcf record.
* @flag: flag bits to be set to the driver fcf record.
*
* This routine updates the driver FCF record from the new HBA FCF record
* together with the address mode, vlan_id, and other informations. This
* routine is called with the host lock held.
**/
static void
__lpfc_update_fcf_record(struct lpfc_hba *phba, struct lpfc_fcf_rec *fcf_rec,
struct fcf_record *new_fcf_record, uint32_t addr_mode,
uint16_t vlan_id, uint32_t flag)
{
lockdep_assert_held(&phba->hbalock);
/* Copy the fields from the HBA's FCF record */
lpfc_copy_fcf_record(fcf_rec, new_fcf_record);
/* Update other fields of driver FCF record */
fcf_rec->addr_mode = addr_mode;
fcf_rec->vlan_id = vlan_id;
fcf_rec->flag |= (flag | RECORD_VALID);
__lpfc_update_fcf_record_pri(phba,
bf_get(lpfc_fcf_record_fcf_index, new_fcf_record),
new_fcf_record);
}
/**
* lpfc_register_fcf - Register the FCF with hba.
* @phba: pointer to lpfc hba data structure.
*
* This routine issues a register fcfi mailbox command to register
* the fcf with HBA.
**/
static void
lpfc_register_fcf(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *fcf_mbxq;
int rc;
spin_lock_irq(&phba->hbalock);
/* If the FCF is not available do nothing. */
if (!(phba->fcf.fcf_flag & FCF_AVAILABLE)) {
phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
spin_unlock_irq(&phba->hbalock);
return;
}
/* The FCF is already registered, start discovery */
if (phba->fcf.fcf_flag & FCF_REGISTERED) {
phba->fcf.fcf_flag |= (FCF_SCAN_DONE | FCF_IN_USE);
phba->hba_flag &= ~FCF_TS_INPROG;
if (phba->pport->port_state != LPFC_FLOGI &&
phba->pport->fc_flag & FC_FABRIC) {
phba->hba_flag |= FCF_RR_INPROG;
spin_unlock_irq(&phba->hbalock);
lpfc_initial_flogi(phba->pport);
return;
}
spin_unlock_irq(&phba->hbalock);
return;
}
spin_unlock_irq(&phba->hbalock);
fcf_mbxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!fcf_mbxq) {
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
spin_unlock_irq(&phba->hbalock);
return;
}
lpfc_reg_fcfi(phba, fcf_mbxq);
fcf_mbxq->vport = phba->pport;
fcf_mbxq->mbox_cmpl = lpfc_mbx_cmpl_reg_fcfi;
rc = lpfc_sli_issue_mbox(phba, fcf_mbxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
spin_unlock_irq(&phba->hbalock);
mempool_free(fcf_mbxq, phba->mbox_mem_pool);
}
return;
}
/**
* lpfc_match_fcf_conn_list - Check if the FCF record can be used for discovery.
* @phba: pointer to lpfc hba data structure.
* @new_fcf_record: pointer to fcf record.
* @boot_flag: Indicates if this record used by boot bios.
* @addr_mode: The address mode to be used by this FCF
* @vlan_id: The vlan id to be used as vlan tagging by this FCF.
*
* This routine compare the fcf record with connect list obtained from the
* config region to decide if this FCF can be used for SAN discovery. It returns
* 1 if this record can be used for SAN discovery else return zero. If this FCF
* record can be used for SAN discovery, the boot_flag will indicate if this FCF
* is used by boot bios and addr_mode will indicate the addressing mode to be
* used for this FCF when the function returns.
* If the FCF record need to be used with a particular vlan id, the vlan is
* set in the vlan_id on return of the function. If not VLAN tagging need to
* be used with the FCF vlan_id will be set to LPFC_FCOE_NULL_VID;
**/
static int
lpfc_match_fcf_conn_list(struct lpfc_hba *phba,
struct fcf_record *new_fcf_record,
uint32_t *boot_flag, uint32_t *addr_mode,
uint16_t *vlan_id)
{
struct lpfc_fcf_conn_entry *conn_entry;
int i, j, fcf_vlan_id = 0;
/* Find the lowest VLAN id in the FCF record */
for (i = 0; i < 512; i++) {
if (new_fcf_record->vlan_bitmap[i]) {
fcf_vlan_id = i * 8;
j = 0;
while (!((new_fcf_record->vlan_bitmap[i] >> j) & 1)) {
j++;
fcf_vlan_id++;
}
break;
}
}
/* FCF not valid/available or solicitation in progress */
if (!bf_get(lpfc_fcf_record_fcf_avail, new_fcf_record) ||
!bf_get(lpfc_fcf_record_fcf_valid, new_fcf_record) ||
bf_get(lpfc_fcf_record_fcf_sol, new_fcf_record))
return 0;
if (!(phba->hba_flag & HBA_FIP_SUPPORT)) {
*boot_flag = 0;
*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
new_fcf_record);
if (phba->valid_vlan)
*vlan_id = phba->vlan_id;
else
*vlan_id = LPFC_FCOE_NULL_VID;
return 1;
}
/*
* If there are no FCF connection table entry, driver connect to all
* FCFs.
*/
if (list_empty(&phba->fcf_conn_rec_list)) {
*boot_flag = 0;
*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
new_fcf_record);
/*
* When there are no FCF connect entries, use driver's default
* addressing mode - FPMA.
*/
if (*addr_mode & LPFC_FCF_FPMA)
*addr_mode = LPFC_FCF_FPMA;
/* If FCF record report a vlan id use that vlan id */
if (fcf_vlan_id)
*vlan_id = fcf_vlan_id;
else
*vlan_id = LPFC_FCOE_NULL_VID;
return 1;
}
list_for_each_entry(conn_entry,
&phba->fcf_conn_rec_list, list) {
if (!(conn_entry->conn_rec.flags & FCFCNCT_VALID))
continue;
if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) &&
!lpfc_fab_name_match(conn_entry->conn_rec.fabric_name,
new_fcf_record))
continue;
if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) &&
!lpfc_sw_name_match(conn_entry->conn_rec.switch_name,
new_fcf_record))
continue;
if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) {
/*
* If the vlan bit map does not have the bit set for the
* vlan id to be used, then it is not a match.
*/
if (!(new_fcf_record->vlan_bitmap
[conn_entry->conn_rec.vlan_tag / 8] &
(1 << (conn_entry->conn_rec.vlan_tag % 8))))
continue;
}
/*
* If connection record does not support any addressing mode,
* skip the FCF record.
*/
if (!(bf_get(lpfc_fcf_record_mac_addr_prov, new_fcf_record)
& (LPFC_FCF_FPMA | LPFC_FCF_SPMA)))
continue;
/*
* Check if the connection record specifies a required
* addressing mode.
*/
if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)) {
/*
* If SPMA required but FCF not support this continue.
*/
if ((conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
!(bf_get(lpfc_fcf_record_mac_addr_prov,
new_fcf_record) & LPFC_FCF_SPMA))
continue;
/*
* If FPMA required but FCF not support this continue.
*/
if (!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
!(bf_get(lpfc_fcf_record_mac_addr_prov,
new_fcf_record) & LPFC_FCF_FPMA))
continue;
}
/*
* This fcf record matches filtering criteria.
*/
if (conn_entry->conn_rec.flags & FCFCNCT_BOOT)
*boot_flag = 1;
else
*boot_flag = 0;
/*
* If user did not specify any addressing mode, or if the
* preferred addressing mode specified by user is not supported
* by FCF, allow fabric to pick the addressing mode.
*/
*addr_mode = bf_get(lpfc_fcf_record_mac_addr_prov,
new_fcf_record);
/*
* If the user specified a required address mode, assign that
* address mode
*/
if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
(!(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED)))
*addr_mode = (conn_entry->conn_rec.flags &
FCFCNCT_AM_SPMA) ?
LPFC_FCF_SPMA : LPFC_FCF_FPMA;
/*
* If the user specified a preferred address mode, use the
* addr mode only if FCF support the addr_mode.
*/
else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
(*addr_mode & LPFC_FCF_SPMA))
*addr_mode = LPFC_FCF_SPMA;
else if ((conn_entry->conn_rec.flags & FCFCNCT_AM_VALID) &&
(conn_entry->conn_rec.flags & FCFCNCT_AM_PREFERRED) &&
!(conn_entry->conn_rec.flags & FCFCNCT_AM_SPMA) &&
(*addr_mode & LPFC_FCF_FPMA))
*addr_mode = LPFC_FCF_FPMA;
/* If matching connect list has a vlan id, use it */
if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID)
*vlan_id = conn_entry->conn_rec.vlan_tag;
/*
* If no vlan id is specified in connect list, use the vlan id
* in the FCF record
*/
else if (fcf_vlan_id)
*vlan_id = fcf_vlan_id;
else
*vlan_id = LPFC_FCOE_NULL_VID;
return 1;
}
return 0;
}
/**
* lpfc_check_pending_fcoe_event - Check if there is pending fcoe event.
* @phba: pointer to lpfc hba data structure.
* @unreg_fcf: Unregister FCF if FCF table need to be re-scaned.
*
* This function check if there is any fcoe event pending while driver
* scan FCF entries. If there is any pending event, it will restart the
* FCF saning and return 1 else return 0.
*/
int
lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
{
/*
* If the Link is up and no FCoE events while in the
* FCF discovery, no need to restart FCF discovery.
*/
if ((phba->link_state >= LPFC_LINK_UP) &&
(phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan))
return 0;
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2768 Pending link or FCF event during current "
"handling of the previous event: link_state:x%x, "
"evt_tag_at_scan:x%x, evt_tag_current:x%x\n",
phba->link_state, phba->fcoe_eventtag_at_fcf_scan,
phba->fcoe_eventtag);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_AVAILABLE;
spin_unlock_irq(&phba->hbalock);
if (phba->link_state >= LPFC_LINK_UP) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
"2780 Restart FCF table scan due to "
"pending FCF event:evt_tag_at_scan:x%x, "
"evt_tag_current:x%x\n",
phba->fcoe_eventtag_at_fcf_scan,
phba->fcoe_eventtag);
lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
} else {
/*
* Do not continue FCF discovery and clear FCF_TS_INPROG
* flag
*/
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
"2833 Stop FCF discovery process due to link "
"state change (x%x)\n", phba->link_state);
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~(FCF_TS_INPROG | FCF_RR_INPROG);
phba->fcf.fcf_flag &= ~(FCF_REDISC_FOV | FCF_DISCOVERY);
spin_unlock_irq(&phba->hbalock);
}
/* Unregister the currently registered FCF if required */
if (unreg_fcf) {
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_REGISTERED;
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_unregister_fcf(phba);
}
return 1;
}
/**
* lpfc_sli4_new_fcf_random_select - Randomly select an eligible new fcf record
* @phba: pointer to lpfc hba data structure.
* @fcf_cnt: number of eligible fcf record seen so far.
*
* This function makes an running random selection decision on FCF record to
* use through a sequence of @fcf_cnt eligible FCF records with equal
* probability. To perform integer manunipulation of random numbers with
* size unit32_t, the lower 16 bits of the 32-bit random number returned
* from prandom_u32() are taken as the random random number generated.
*
* Returns true when outcome is for the newly read FCF record should be
* chosen; otherwise, return false when outcome is for keeping the previously
* chosen FCF record.
**/
static bool
lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
{
uint32_t rand_num;
/* Get 16-bit uniform random number */
rand_num = 0xFFFF & prandom_u32();
/* Decision with probability 1/fcf_cnt */
if ((fcf_cnt * rand_num) < 0xFFFF)
return true;
else
return false;
}
/**
* lpfc_sli4_fcf_rec_mbox_parse - Parse read_fcf mbox command.
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to mailbox object.
* @next_fcf_index: pointer to holder of next fcf index.
*
* This routine parses the non-embedded fcf mailbox command by performing the
* necessarily error checking, non-embedded read FCF record mailbox command
* SGE parsing, and endianness swapping.
*
* Returns the pointer to the new FCF record in the non-embedded mailbox
* command DMA memory if successfully, other NULL.
*/
static struct fcf_record *
lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
uint16_t *next_fcf_index)
{
void *virt_addr;
struct lpfc_mbx_sge sge;
struct lpfc_mbx_read_fcf_tbl *read_fcf;
uint32_t shdr_status, shdr_add_status, if_type;
union lpfc_sli4_cfg_shdr *shdr;
struct fcf_record *new_fcf_record;
/* Get the first SGE entry from the non-embedded DMA memory. This
* routine only uses a single SGE.
*/
lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
if (unlikely(!mboxq->sge_array)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2524 Failed to get the non-embedded SGE "
"virtual address\n");
return NULL;
}
virt_addr = mboxq->sge_array->addr[0];
shdr = (union lpfc_sli4_cfg_shdr *)virt_addr;
lpfc_sli_pcimem_bcopy(shdr, shdr,
sizeof(union lpfc_sli4_cfg_shdr));
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status) {
if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
if_type == LPFC_SLI_INTF_IF_TYPE_2)
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2726 READ_FCF_RECORD Indicates empty "
"FCF table.\n");
else
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2521 READ_FCF_RECORD mailbox failed "
"with status x%x add_status x%x, "
"mbx\n", shdr_status, shdr_add_status);
return NULL;
}
/* Interpreting the returned information of the FCF record */
read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
lpfc_sli_pcimem_bcopy(read_fcf, read_fcf,
sizeof(struct lpfc_mbx_read_fcf_tbl));
*next_fcf_index = bf_get(lpfc_mbx_read_fcf_tbl_nxt_vindx, read_fcf);
new_fcf_record = (struct fcf_record *)(virt_addr +
sizeof(struct lpfc_mbx_read_fcf_tbl));
lpfc_sli_pcimem_bcopy(new_fcf_record, new_fcf_record,
offsetof(struct fcf_record, vlan_bitmap));
new_fcf_record->word137 = le32_to_cpu(new_fcf_record->word137);
new_fcf_record->word138 = le32_to_cpu(new_fcf_record->word138);
return new_fcf_record;
}
/**
* lpfc_sli4_log_fcf_record_info - Log the information of a fcf record
* @phba: pointer to lpfc hba data structure.
* @fcf_record: pointer to the fcf record.
* @vlan_id: the lowest vlan identifier associated to this fcf record.
* @next_fcf_index: the index to the next fcf record in hba's fcf table.
*
* This routine logs the detailed FCF record if the LOG_FIP loggin is
* enabled.
**/
static void
lpfc_sli4_log_fcf_record_info(struct lpfc_hba *phba,
struct fcf_record *fcf_record,
uint16_t vlan_id,
uint16_t next_fcf_index)
{
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2764 READ_FCF_RECORD:\n"
"\tFCF_Index : x%x\n"
"\tFCF_Avail : x%x\n"
"\tFCF_Valid : x%x\n"
"\tFCF_SOL : x%x\n"
"\tFIP_Priority : x%x\n"
"\tMAC_Provider : x%x\n"
"\tLowest VLANID : x%x\n"
"\tFCF_MAC Addr : x%x:%x:%x:%x:%x:%x\n"
"\tFabric_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
"\tSwitch_Name : x%x:%x:%x:%x:%x:%x:%x:%x\n"
"\tNext_FCF_Index: x%x\n",
bf_get(lpfc_fcf_record_fcf_index, fcf_record),
bf_get(lpfc_fcf_record_fcf_avail, fcf_record),
bf_get(lpfc_fcf_record_fcf_valid, fcf_record),
bf_get(lpfc_fcf_record_fcf_sol, fcf_record),
fcf_record->fip_priority,
bf_get(lpfc_fcf_record_mac_addr_prov, fcf_record),
vlan_id,
bf_get(lpfc_fcf_record_mac_0, fcf_record),
bf_get(lpfc_fcf_record_mac_1, fcf_record),
bf_get(lpfc_fcf_record_mac_2, fcf_record),
bf_get(lpfc_fcf_record_mac_3, fcf_record),
bf_get(lpfc_fcf_record_mac_4, fcf_record),
bf_get(lpfc_fcf_record_mac_5, fcf_record),
bf_get(lpfc_fcf_record_fab_name_0, fcf_record),
bf_get(lpfc_fcf_record_fab_name_1, fcf_record),
bf_get(lpfc_fcf_record_fab_name_2, fcf_record),
bf_get(lpfc_fcf_record_fab_name_3, fcf_record),
bf_get(lpfc_fcf_record_fab_name_4, fcf_record),
bf_get(lpfc_fcf_record_fab_name_5, fcf_record),
bf_get(lpfc_fcf_record_fab_name_6, fcf_record),
bf_get(lpfc_fcf_record_fab_name_7, fcf_record),
bf_get(lpfc_fcf_record_switch_name_0, fcf_record),
bf_get(lpfc_fcf_record_switch_name_1, fcf_record),
bf_get(lpfc_fcf_record_switch_name_2, fcf_record),
bf_get(lpfc_fcf_record_switch_name_3, fcf_record),
bf_get(lpfc_fcf_record_switch_name_4, fcf_record),
bf_get(lpfc_fcf_record_switch_name_5, fcf_record),
bf_get(lpfc_fcf_record_switch_name_6, fcf_record),
bf_get(lpfc_fcf_record_switch_name_7, fcf_record),
next_fcf_index);
}
/**
lpfc_sli4_fcf_record_match - testing new FCF record for matching existing FCF
* @phba: pointer to lpfc hba data structure.
* @fcf_rec: pointer to an existing FCF record.
* @new_fcf_record: pointer to a new FCF record.
* @new_vlan_id: vlan id from the new FCF record.
*
* This function performs matching test of a new FCF record against an existing
* FCF record. If the new_vlan_id passed in is LPFC_FCOE_IGNORE_VID, vlan id
* will not be used as part of the FCF record matching criteria.
*
* Returns true if all the fields matching, otherwise returns false.
*/
static bool
lpfc_sli4_fcf_record_match(struct lpfc_hba *phba,
struct lpfc_fcf_rec *fcf_rec,
struct fcf_record *new_fcf_record,
uint16_t new_vlan_id)
{
if (new_vlan_id != LPFC_FCOE_IGNORE_VID)
if (!lpfc_vlan_id_match(fcf_rec->vlan_id, new_vlan_id))
return false;
if (!lpfc_mac_addr_match(fcf_rec->mac_addr, new_fcf_record))
return false;
if (!lpfc_sw_name_match(fcf_rec->switch_name, new_fcf_record))
return false;
if (!lpfc_fab_name_match(fcf_rec->fabric_name, new_fcf_record))
return false;
if (fcf_rec->priority != new_fcf_record->fip_priority)
return false;
return true;
}
/**
* lpfc_sli4_fcf_rr_next_proc - processing next roundrobin fcf
* @vport: Pointer to vport object.
* @fcf_index: index to next fcf.
*
* This function processing the roundrobin fcf failover to next fcf index.
* When this function is invoked, there will be a current fcf registered
* for flogi.
* Return: 0 for continue retrying flogi on currently registered fcf;
* 1 for stop flogi on currently registered fcf;
*/
int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index)
{
struct lpfc_hba *phba = vport->phba;
int rc;
if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
spin_lock_irq(&phba->hbalock);
if (phba->hba_flag & HBA_DEVLOSS_TMO) {
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2872 Devloss tmo with no eligible "
"FCF, unregister in-use FCF (x%x) "
"and rescan FCF table\n",
phba->fcf.current_rec.fcf_indx);
lpfc_unregister_fcf_rescan(phba);
goto stop_flogi_current_fcf;
}
/* Mark the end to FLOGI roundrobin failover */
phba->hba_flag &= ~FCF_RR_INPROG;
/* Allow action to new fcf asynchronous event */
phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2865 No FCF available, stop roundrobin FCF "
"failover and change port state:x%x/x%x\n",
phba->pport->port_state, LPFC_VPORT_UNKNOWN);
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
if (!phba->fcf.fcf_redisc_attempted) {
lpfc_unregister_fcf(phba);
rc = lpfc_sli4_redisc_fcf_table(phba);
if (!rc) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"3195 Rediscover FCF table\n");
phba->fcf.fcf_redisc_attempted = 1;
lpfc_sli4_clear_fcf_rr_bmask(phba);
} else {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"3196 Rediscover FCF table "
"failed. Status:x%x\n", rc);
}
} else {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"3197 Already rediscover FCF table "
"attempted. No more retry\n");
}
goto stop_flogi_current_fcf;
} else {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS,
"2794 Try FLOGI roundrobin FCF failover to "
"(x%x)\n", fcf_index);
rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba, fcf_index);
if (rc)
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
"2761 FLOGI roundrobin FCF failover "
"failed (rc:x%x) to read FCF (x%x)\n",
rc, phba->fcf.current_rec.fcf_indx);
else
goto stop_flogi_current_fcf;
}
return 0;
stop_flogi_current_fcf:
lpfc_can_disctmo(vport);
return 1;
}
/**
* lpfc_sli4_fcf_pri_list_del
* @phba: pointer to lpfc hba data structure.
* @fcf_index the index of the fcf record to delete
* This routine checks the on list flag of the fcf_index to be deleted.
* If it is one the list then it is removed from the list, and the flag
* is cleared. This routine grab the hbalock before removing the fcf
* record from the list.
**/
static void lpfc_sli4_fcf_pri_list_del(struct lpfc_hba *phba,
uint16_t fcf_index)
{
struct lpfc_fcf_pri *new_fcf_pri;
new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"3058 deleting idx x%x pri x%x flg x%x\n",
fcf_index, new_fcf_pri->fcf_rec.priority,
new_fcf_pri->fcf_rec.flag);
spin_lock_irq(&phba->hbalock);
if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST) {
if (phba->fcf.current_rec.priority ==
new_fcf_pri->fcf_rec.priority)
phba->fcf.eligible_fcf_cnt--;
list_del_init(&new_fcf_pri->list);
new_fcf_pri->fcf_rec.flag &= ~LPFC_FCF_ON_PRI_LIST;
}
spin_unlock_irq(&phba->hbalock);
}
/**
* lpfc_sli4_set_fcf_flogi_fail
* @phba: pointer to lpfc hba data structure.
* @fcf_index the index of the fcf record to update
* This routine acquires the hbalock and then set the LPFC_FCF_FLOGI_FAILED
* flag so the the round robin slection for the particular priority level
* will try a different fcf record that does not have this bit set.
* If the fcf record is re-read for any reason this flag is cleared brfore
* adding it to the priority list.
**/
void
lpfc_sli4_set_fcf_flogi_fail(struct lpfc_hba *phba, uint16_t fcf_index)
{
struct lpfc_fcf_pri *new_fcf_pri;
new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
spin_lock_irq(&phba->hbalock);
new_fcf_pri->fcf_rec.flag |= LPFC_FCF_FLOGI_FAILED;
spin_unlock_irq(&phba->hbalock);
}
/**
* lpfc_sli4_fcf_pri_list_add
* @phba: pointer to lpfc hba data structure.
* @fcf_index the index of the fcf record to add
* This routine checks the priority of the fcf_index to be added.
* If it is a lower priority than the current head of the fcf_pri list
* then it is added to the list in the right order.
* If it is the same priority as the current head of the list then it
* is added to the head of the list and its bit in the rr_bmask is set.
* If the fcf_index to be added is of a higher priority than the current
* head of the list then the rr_bmask is cleared, its bit is set in the
* rr_bmask and it is added to the head of the list.
* returns:
* 0=success 1=failure
**/
static int lpfc_sli4_fcf_pri_list_add(struct lpfc_hba *phba,
uint16_t fcf_index,
struct fcf_record *new_fcf_record)
{
uint16_t current_fcf_pri;
uint16_t last_index;
struct lpfc_fcf_pri *fcf_pri;
struct lpfc_fcf_pri *next_fcf_pri;
struct lpfc_fcf_pri *new_fcf_pri;
int ret;
new_fcf_pri = &phba->fcf.fcf_pri[fcf_index];
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"3059 adding idx x%x pri x%x flg x%x\n",
fcf_index, new_fcf_record->fip_priority,
new_fcf_pri->fcf_rec.flag);
spin_lock_irq(&phba->hbalock);
if (new_fcf_pri->fcf_rec.flag & LPFC_FCF_ON_PRI_LIST)
list_del_init(&new_fcf_pri->list);
new_fcf_pri->fcf_rec.fcf_index = fcf_index;
new_fcf_pri->fcf_rec.priority = new_fcf_record->fip_priority;
if (list_empty(&phba->fcf.fcf_pri_list)) {
list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
ret = lpfc_sli4_fcf_rr_index_set(phba,
new_fcf_pri->fcf_rec.fcf_index);
goto out;
}
last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
LPFC_SLI4_FCF_TBL_INDX_MAX);
if (last_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
ret = 0; /* Empty rr list */
goto out;
}
current_fcf_pri = phba->fcf.fcf_pri[last_index].fcf_rec.priority;
if (new_fcf_pri->fcf_rec.priority <= current_fcf_pri) {
list_add(&new_fcf_pri->list, &phba->fcf.fcf_pri_list);
if (new_fcf_pri->fcf_rec.priority < current_fcf_pri) {
memset(phba->fcf.fcf_rr_bmask, 0,
sizeof(*phba->fcf.fcf_rr_bmask));
/* fcfs_at_this_priority_level = 1; */
phba->fcf.eligible_fcf_cnt = 1;
} else
/* fcfs_at_this_priority_level++; */
phba->fcf.eligible_fcf_cnt++;
ret = lpfc_sli4_fcf_rr_index_set(phba,
new_fcf_pri->fcf_rec.fcf_index);
goto out;
}
list_for_each_entry_safe(fcf_pri, next_fcf_pri,
&phba->fcf.fcf_pri_list, list) {
if (new_fcf_pri->fcf_rec.priority <=
fcf_pri->fcf_rec.priority) {
if (fcf_pri->list.prev == &phba->fcf.fcf_pri_list)
list_add(&new_fcf_pri->list,
&phba->fcf.fcf_pri_list);
else
list_add(&new_fcf_pri->list,
&((struct lpfc_fcf_pri *)
fcf_pri->list.prev)->list);
ret = 0;
goto out;
} else if (fcf_pri->list.next == &phba->fcf.fcf_pri_list
|| new_fcf_pri->fcf_rec.priority <
next_fcf_pri->fcf_rec.priority) {
list_add(&new_fcf_pri->list, &fcf_pri->list);
ret = 0;
goto out;
}
if (new_fcf_pri->fcf_rec.priority > fcf_pri->fcf_rec.priority)
continue;
}
ret = 1;
out:
/* we use = instead of |= to clear the FLOGI_FAILED flag. */
new_fcf_pri->fcf_rec.flag = LPFC_FCF_ON_PRI_LIST;
spin_unlock_irq(&phba->hbalock);
return ret;
}
/**
* lpfc_mbx_cmpl_fcf_scan_read_fcf_rec - fcf scan read_fcf mbox cmpl handler.
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to mailbox object.
*
* This function iterates through all the fcf records available in
* HBA and chooses the optimal FCF record for discovery. After finding
* the FCF for discovery it registers the FCF record and kicks start
* discovery.
* If FCF_IN_USE flag is set in currently used FCF, the routine tries to
* use an FCF record which matches fabric name and mac address of the
* currently used FCF record.
* If the driver supports only one FCF, it will try to use the FCF record
* used by BOOT_BIOS.
*/
void
lpfc_mbx_cmpl_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct fcf_record *new_fcf_record;
uint32_t boot_flag, addr_mode;
uint16_t fcf_index, next_fcf_index;
struct lpfc_fcf_rec *fcf_rec = NULL;
uint16_t vlan_id = LPFC_FCOE_NULL_VID;
bool select_new_fcf;
int rc;
/* If there is pending FCoE event restart FCF table scan */
if (lpfc_check_pending_fcoe_event(phba, LPFC_SKIP_UNREG_FCF)) {
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return;
}
/* Parse the FCF record from the non-embedded mailbox command */
new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
&next_fcf_index);
if (!new_fcf_record) {
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2765 Mailbox command READ_FCF_RECORD "
"failed to retrieve a FCF record.\n");
/* Let next new FCF event trigger fast failover */
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~FCF_TS_INPROG;
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return;
}
/* Check the FCF record against the connection list */
rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
&addr_mode, &vlan_id);
/* Log the FCF record information if turned on */
lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
next_fcf_index);
/*
* If the fcf record does not match with connect list entries
* read the next entry; otherwise, this is an eligible FCF
* record for roundrobin FCF failover.
*/
if (!rc) {
lpfc_sli4_fcf_pri_list_del(phba,
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"2781 FCF (x%x) failed connection "
"list check: (x%x/x%x/%x)\n",
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record),
bf_get(lpfc_fcf_record_fcf_avail,
new_fcf_record),
bf_get(lpfc_fcf_record_fcf_valid,
new_fcf_record),
bf_get(lpfc_fcf_record_fcf_sol,
new_fcf_record));
if ((phba->fcf.fcf_flag & FCF_IN_USE) &&
lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
new_fcf_record, LPFC_FCOE_IGNORE_VID)) {
if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) !=
phba->fcf.current_rec.fcf_indx) {
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2862 FCF (x%x) matches property "
"of in-use FCF (x%x)\n",
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record),
phba->fcf.current_rec.fcf_indx);
goto read_next_fcf;
}
/*
* In case the current in-use FCF record becomes
* invalid/unavailable during FCF discovery that
* was not triggered by fast FCF failover process,
* treat it as fast FCF failover.
*/
if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND) &&
!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"2835 Invalid in-use FCF "
"(x%x), enter FCF failover "
"table scan.\n",
phba->fcf.current_rec.fcf_indx);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag |= FCF_REDISC_FOV;
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
lpfc_sli4_fcf_scan_read_fcf_rec(phba,
LPFC_FCOE_FCF_GET_FIRST);
return;
}
}
goto read_next_fcf;
} else {
fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index,
new_fcf_record);
if (rc)
goto read_next_fcf;
}
/*
* If this is not the first FCF discovery of the HBA, use last
* FCF record for the discovery. The condition that a rescan
* matches the in-use FCF record: fabric name, switch name, mac
* address, and vlan_id.
*/
spin_lock_irq(&phba->hbalock);
if (phba->fcf.fcf_flag & FCF_IN_USE) {
if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
lpfc_sli4_fcf_record_match(phba, &phba->fcf.current_rec,
new_fcf_record, vlan_id)) {
if (bf_get(lpfc_fcf_record_fcf_index, new_fcf_record) ==
phba->fcf.current_rec.fcf_indx) {
phba->fcf.fcf_flag |= FCF_AVAILABLE;
if (phba->fcf.fcf_flag & FCF_REDISC_PEND)
/* Stop FCF redisc wait timer */
__lpfc_sli4_stop_fcf_redisc_wait_timer(
phba);
else if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
/* Fast failover, mark completed */
phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2836 New FCF matches in-use "
"FCF (x%x), port_state:x%x, "
"fc_flag:x%x\n",
phba->fcf.current_rec.fcf_indx,
phba->pport->port_state,
phba->pport->fc_flag);
goto out;
} else
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2863 New FCF (x%x) matches "
"property of in-use FCF (x%x)\n",
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record),
phba->fcf.current_rec.fcf_indx);
}
/*
* Read next FCF record from HBA searching for the matching
* with in-use record only if not during the fast failover
* period. In case of fast failover period, it shall try to
* determine whether the FCF record just read should be the
* next candidate.
*/
if (!(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
spin_unlock_irq(&phba->hbalock);
goto read_next_fcf;
}
}
/*
* Update on failover FCF record only if it's in FCF fast-failover
* period; otherwise, update on current FCF record.
*/
if (phba->fcf.fcf_flag & FCF_REDISC_FOV)
fcf_rec = &phba->fcf.failover_rec;
else
fcf_rec = &phba->fcf.current_rec;
if (phba->fcf.fcf_flag & FCF_AVAILABLE) {
/*
* If the driver FCF record does not have boot flag
* set and new hba fcf record has boot flag set, use
* the new hba fcf record.
*/
if (boot_flag && !(fcf_rec->flag & BOOT_ENABLE)) {
/* Choose this FCF record */
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2837 Update current FCF record "
"(x%x) with new FCF record (x%x)\n",
fcf_rec->fcf_indx,
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
addr_mode, vlan_id, BOOT_ENABLE);
spin_unlock_irq(&phba->hbalock);
goto read_next_fcf;
}
/*
* If the driver FCF record has boot flag set and the
* new hba FCF record does not have boot flag, read
* the next FCF record.
*/
if (!boot_flag && (fcf_rec->flag & BOOT_ENABLE)) {
spin_unlock_irq(&phba->hbalock);
goto read_next_fcf;
}
/*
* If the new hba FCF record has lower priority value
* than the driver FCF record, use the new record.
*/
if (new_fcf_record->fip_priority < fcf_rec->priority) {
/* Choose the new FCF record with lower priority */
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2838 Update current FCF record "
"(x%x) with new FCF record (x%x)\n",
fcf_rec->fcf_indx,
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
addr_mode, vlan_id, 0);
/* Reset running random FCF selection count */
phba->fcf.eligible_fcf_cnt = 1;
} else if (new_fcf_record->fip_priority == fcf_rec->priority) {
/* Update running random FCF selection count */
phba->fcf.eligible_fcf_cnt++;
select_new_fcf = lpfc_sli4_new_fcf_random_select(phba,
phba->fcf.eligible_fcf_cnt);
if (select_new_fcf) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2839 Update current FCF record "
"(x%x) with new FCF record (x%x)\n",
fcf_rec->fcf_indx,
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
/* Choose the new FCF by random selection */
__lpfc_update_fcf_record(phba, fcf_rec,
new_fcf_record,
addr_mode, vlan_id, 0);
}
}
spin_unlock_irq(&phba->hbalock);
goto read_next_fcf;
}
/*
* This is the first suitable FCF record, choose this record for
* initial best-fit FCF.
*/
if (fcf_rec) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2840 Update initial FCF candidate "
"with FCF (x%x)\n",
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
__lpfc_update_fcf_record(phba, fcf_rec, new_fcf_record,
addr_mode, vlan_id, (boot_flag ?
BOOT_ENABLE : 0));
phba->fcf.fcf_flag |= FCF_AVAILABLE;
/* Setup initial running random FCF selection count */
phba->fcf.eligible_fcf_cnt = 1;
}
spin_unlock_irq(&phba->hbalock);
goto read_next_fcf;
read_next_fcf:
lpfc_sli4_mbox_cmd_free(phba, mboxq);
if (next_fcf_index == LPFC_FCOE_FCF_NEXT_NONE || next_fcf_index == 0) {
if (phba->fcf.fcf_flag & FCF_REDISC_FOV) {
/*
* Case of FCF fast failover scan
*/
/*
* It has not found any suitable FCF record, cancel
* FCF scan inprogress, and do nothing
*/
if (!(phba->fcf.failover_rec.flag & RECORD_VALID)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"2782 No suitable FCF found: "
"(x%x/x%x)\n",
phba->fcoe_eventtag_at_fcf_scan,
bf_get(lpfc_fcf_record_fcf_index,
new_fcf_record));
spin_lock_irq(&phba->hbalock);
if (phba->hba_flag & HBA_DEVLOSS_TMO) {
phba->hba_flag &= ~FCF_TS_INPROG;
spin_unlock_irq(&phba->hbalock);
/* Unregister in-use FCF and rescan */
lpfc_printf_log(phba, KERN_INFO,
LOG_FIP,
"2864 On devloss tmo "
"unreg in-use FCF and "
"rescan FCF table\n");
lpfc_unregister_fcf_rescan(phba);
return;
}
/*
* Let next new FCF event trigger fast failover
*/
phba->hba_flag &= ~FCF_TS_INPROG;
spin_unlock_irq(&phba->hbalock);
return;
}
/*
* It has found a suitable FCF record that is not
* the same as in-use FCF record, unregister the
* in-use FCF record, replace the in-use FCF record
* with the new FCF record, mark FCF fast failover
* completed, and then start register the new FCF
* record.
*/
/* Unregister the current in-use FCF record */
lpfc_unregister_fcf(phba);
/* Replace in-use record with the new record */
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2842 Replace in-use FCF (x%x) "
"with failover FCF (x%x)\n",
phba->fcf.current_rec.fcf_indx,
phba->fcf.failover_rec.fcf_indx);
memcpy(&phba->fcf.current_rec,
&phba->fcf.failover_rec,
sizeof(struct lpfc_fcf_rec));
/*
* Mark the fast FCF failover rediscovery completed
* and the start of the first round of the roundrobin
* FCF failover.
*/
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_REDISC_FOV;
spin_unlock_irq(&phba->hbalock);
/* Register to the new FCF record */
lpfc_register_fcf(phba);
} else {
/*
* In case of transaction period to fast FCF failover,
* do nothing when search to the end of the FCF table.
*/
if ((phba->fcf.fcf_flag & FCF_REDISC_EVT) ||
(phba->fcf.fcf_flag & FCF_REDISC_PEND))
return;
if (phba->cfg_fcf_failover_policy == LPFC_FCF_FOV &&
phba->fcf.fcf_flag & FCF_IN_USE) {
/*
* In case the current in-use FCF record no
* longer existed during FCF discovery that
* was not triggered by fast FCF failover
* process, treat it as fast FCF failover.
*/
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2841 In-use FCF record (x%x) "
"not reported, entering fast "
"FCF failover mode scanning.\n",
phba->fcf.current_rec.fcf_indx);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag |= FCF_REDISC_FOV;
spin_unlock_irq(&phba->hbalock);
lpfc_sli4_fcf_scan_read_fcf_rec(phba,
LPFC_FCOE_FCF_GET_FIRST);
return;
}
/* Register to the new FCF record */
lpfc_register_fcf(phba);
}
} else
lpfc_sli4_fcf_scan_read_fcf_rec(phba, next_fcf_index);
return;
out:
lpfc_sli4_mbox_cmd_free(phba, mboxq);
lpfc_register_fcf(phba);
return;
}
/**
* lpfc_mbx_cmpl_fcf_rr_read_fcf_rec - fcf roundrobin read_fcf mbox cmpl hdler
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to mailbox object.
*
* This is the callback function for FLOGI failure roundrobin FCF failover
* read FCF record mailbox command from the eligible FCF record bmask for
* performing the failover. If the FCF read back is not valid/available, it
* fails through to retrying FLOGI to the currently registered FCF again.
* Otherwise, if the FCF read back is valid and available, it will set the
* newly read FCF record to the failover FCF record, unregister currently
* registered FCF record, copy the failover FCF record to the current
* FCF record, and then register the current FCF record before proceeding
* to trying FLOGI on the new failover FCF.
*/
void
lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct fcf_record *new_fcf_record;
uint32_t boot_flag, addr_mode;
uint16_t next_fcf_index, fcf_index;
uint16_t current_fcf_index;
uint16_t vlan_id;
int rc;
/* If link state is not up, stop the roundrobin failover process */
if (phba->link_state < LPFC_LINK_UP) {
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
phba->hba_flag &= ~FCF_RR_INPROG;
spin_unlock_irq(&phba->hbalock);
goto out;
}
/* Parse the FCF record from the non-embedded mailbox command */
new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
&next_fcf_index);
if (!new_fcf_record) {
lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
"2766 Mailbox command READ_FCF_RECORD "
"failed to retrieve a FCF record. "
"hba_flg x%x fcf_flg x%x\n", phba->hba_flag,
phba->fcf.fcf_flag);
lpfc_unregister_fcf_rescan(phba);
goto out;
}
/* Get the needed parameters from FCF record */
rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
&addr_mode, &vlan_id);
/* Log the FCF record information if turned on */
lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
next_fcf_index);
fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
if (!rc) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2848 Remove ineligible FCF (x%x) from "
"from roundrobin bmask\n", fcf_index);
/* Clear roundrobin bmask bit for ineligible FCF */
lpfc_sli4_fcf_rr_index_clear(phba, fcf_index);
/* Perform next round of roundrobin FCF failover */
fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
rc = lpfc_sli4_fcf_rr_next_proc(phba->pport, fcf_index);
if (rc)
goto out;
goto error_out;
}
if (fcf_index == phba->fcf.current_rec.fcf_indx) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2760 Perform FLOGI roundrobin FCF failover: "
"FCF (x%x) back to FCF (x%x)\n",
phba->fcf.current_rec.fcf_indx, fcf_index);
/* Wait 500 ms before retrying FLOGI to current FCF */
msleep(500);
lpfc_issue_init_vfi(phba->pport);
goto out;
}
/* Upload new FCF record to the failover FCF record */
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2834 Update current FCF (x%x) with new FCF (x%x)\n",
phba->fcf.failover_rec.fcf_indx, fcf_index);
spin_lock_irq(&phba->hbalock);
__lpfc_update_fcf_record(phba, &phba->fcf.failover_rec,
new_fcf_record, addr_mode, vlan_id,
(boot_flag ? BOOT_ENABLE : 0));
spin_unlock_irq(&phba->hbalock);
current_fcf_index = phba->fcf.current_rec.fcf_indx;
/* Unregister the current in-use FCF record */
lpfc_unregister_fcf(phba);
/* Replace in-use record with the new record */
memcpy(&phba->fcf.current_rec, &phba->fcf.failover_rec,
sizeof(struct lpfc_fcf_rec));
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2783 Perform FLOGI roundrobin FCF failover: FCF "
"(x%x) to FCF (x%x)\n", current_fcf_index, fcf_index);
error_out:
lpfc_register_fcf(phba);
out:
lpfc_sli4_mbox_cmd_free(phba, mboxq);
}
/**
* lpfc_mbx_cmpl_read_fcf_rec - read fcf completion handler.
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to mailbox object.
*
* This is the callback function of read FCF record mailbox command for
* updating the eligible FCF bmask for FLOGI failure roundrobin FCF
* failover when a new FCF event happened. If the FCF read back is
* valid/available and it passes the connection list check, it updates
* the bmask for the eligible FCF record for roundrobin failover.
*/
void
lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct fcf_record *new_fcf_record;
uint32_t boot_flag, addr_mode;
uint16_t fcf_index, next_fcf_index;
uint16_t vlan_id;
int rc;
/* If link state is not up, no need to proceed */
if (phba->link_state < LPFC_LINK_UP)
goto out;
/* If FCF discovery period is over, no need to proceed */
if (!(phba->fcf.fcf_flag & FCF_DISCOVERY))
goto out;
/* Parse the FCF record from the non-embedded mailbox command */
new_fcf_record = lpfc_sli4_fcf_rec_mbox_parse(phba, mboxq,
&next_fcf_index);
if (!new_fcf_record) {
lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
"2767 Mailbox command READ_FCF_RECORD "
"failed to retrieve a FCF record.\n");
goto out;
}
/* Check the connection list for eligibility */
rc = lpfc_match_fcf_conn_list(phba, new_fcf_record, &boot_flag,
&addr_mode, &vlan_id);
/* Log the FCF record information if turned on */
lpfc_sli4_log_fcf_record_info(phba, new_fcf_record, vlan_id,
next_fcf_index);
if (!rc)
goto out;
/* Update the eligible FCF record index bmask */
fcf_index = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record);
rc = lpfc_sli4_fcf_pri_list_add(phba, fcf_index, new_fcf_record);
out:
lpfc_sli4_mbox_cmd_free(phba, mboxq);
}
/**
* lpfc_init_vfi_cmpl - Completion handler for init_vfi mbox command.
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to mailbox data structure.
*
* This function handles completion of init vfi mailbox command.
*/
static void
lpfc_init_vfi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
struct lpfc_vport *vport = mboxq->vport;
/*
* VFI not supported on interface type 0, just do the flogi
* Also continue if the VFI is in use - just use the same one.
*/
if