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linux/drivers/scsi/lpfc/lpfc_els.c
James.Smart@Emulex.Com 6281bfe000 [SCSI] lpfc 8.1.1 : Fixes for short cable pulls 
Cause: Link bounces were causing discovery ELS's to be killed.
Driver was not properly flushing ELS commands upon the subsequent
link bounces. Thus, processing of ELS post link bounce erroneously
assumed discovery failure and device loss.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:16:01 -07:00

3258 lines
83 KiB
C
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2005 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.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/pci.h>
#include <linux/interrupt.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
struct lpfc_iocbq *);
static int lpfc_max_els_tries = 3;
static int
lpfc_els_chk_latt(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
LPFC_MBOXQ_t *mbox;
uint32_t ha_copy;
int rc;
psli = &phba->sli;
if ((phba->hba_state >= LPFC_HBA_READY) ||
(phba->hba_state == LPFC_LINK_DOWN))
return 0;
/* Read the HBA Host Attention Register */
spin_lock_irq(phba->host->host_lock);
ha_copy = readl(phba->HAregaddr);
spin_unlock_irq(phba->host->host_lock);
if (!(ha_copy & HA_LATT))
return 0;
/* Pending Link Event during Discovery */
lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY,
"%d:0237 Pending Link Event during "
"Discovery: State x%x\n",
phba->brd_no, phba->hba_state);
/* CLEAR_LA should re-enable link attention events and
* we should then imediately take a LATT event. The
* LATT processing should call lpfc_linkdown() which
* will cleanup any left over in-progress discovery
* events.
*/
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_ABORT_DISCOVERY;
spin_unlock_irq(phba->host->host_lock);
if (phba->hba_state != LPFC_CLEAR_LA) {
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
phba->hba_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, mbox);
mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox (phba, mbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
phba->hba_state = LPFC_HBA_ERROR;
}
}
}
return (1);
}
static struct lpfc_iocbq *
lpfc_prep_els_iocb(struct lpfc_hba * phba,
uint8_t expectRsp,
uint16_t cmdSize,
uint8_t retry, struct lpfc_nodelist * ndlp, uint32_t elscmd)
{
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *elsiocb;
struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
struct ulp_bde64 *bpl;
IOCB_t *icmd;
pring = &phba->sli.ring[LPFC_ELS_RING];
if (phba->hba_state < LPFC_LINK_UP)
return NULL;
/* Allocate buffer for command iocb */
spin_lock_irq(phba->host->host_lock);
elsiocb = lpfc_sli_get_iocbq(phba);
spin_unlock_irq(phba->host->host_lock);
if (elsiocb == NULL)
return NULL;
icmd = &elsiocb->iocb;
/* fill in BDEs for command */
/* Allocate buffer for command payload */
if (((pcmd = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
((pcmd->virt = lpfc_mbuf_alloc(phba,
MEM_PRI, &(pcmd->phys))) == 0)) {
kfree(pcmd);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
INIT_LIST_HEAD(&pcmd->list);
/* Allocate buffer for response payload */
if (expectRsp) {
prsp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
if (prsp)
prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&prsp->phys);
if (prsp == 0 || prsp->virt == 0) {
kfree(prsp);
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
kfree(pcmd);
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
INIT_LIST_HEAD(&prsp->list);
} else {
prsp = NULL;
}
/* Allocate buffer for Buffer ptr list */
pbuflist = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
if (pbuflist)
pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&pbuflist->phys);
if (pbuflist == 0 || pbuflist->virt == 0) {
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
kfree(pcmd);
kfree(prsp);
kfree(pbuflist);
return NULL;
}
INIT_LIST_HEAD(&pbuflist->list);
icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BDL;
if (expectRsp) {
icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
icmd->un.elsreq64.remoteID = ndlp->nlp_DID; /* DID */
icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
} else {
icmd->un.elsreq64.bdl.bdeSize = sizeof (struct ulp_bde64);
icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
}
icmd->ulpBdeCount = 1;
icmd->ulpLe = 1;
icmd->ulpClass = CLASS3;
bpl = (struct ulp_bde64 *) pbuflist->virt;
bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
bpl->tus.f.bdeSize = cmdSize;
bpl->tus.f.bdeFlags = 0;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
if (expectRsp) {
bpl++;
bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
bpl->tus.f.bdeSize = FCELSSIZE;
bpl->tus.f.bdeFlags = BUFF_USE_RCV;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
}
/* Save for completion so we can release these resources */
elsiocb->context1 = (uint8_t *) ndlp;
elsiocb->context2 = (uint8_t *) pcmd;
elsiocb->context3 = (uint8_t *) pbuflist;
elsiocb->retry = retry;
elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
if (prsp) {
list_add(&prsp->list, &pcmd->list);
}
if (expectRsp) {
/* Xmit ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0116 Xmit ELS command x%x to remote "
"NPORT x%x Data: x%x x%x\n",
phba->brd_no, elscmd,
ndlp->nlp_DID, icmd->ulpIoTag, phba->hba_state);
} else {
/* Xmit ELS response <elsCmd> to remote NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0117 Xmit ELS response x%x to remote "
"NPORT x%x Data: x%x x%x\n",
phba->brd_no, elscmd,
ndlp->nlp_DID, icmd->ulpIoTag, cmdSize);
}
return (elsiocb);
}
static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
struct serv_parm *sp, IOCB_t *irsp)
{
LPFC_MBOXQ_t *mbox;
int rc;
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_FABRIC;
spin_unlock_irq(phba->host->host_lock);
phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
if (phba->fc_topology == TOPOLOGY_LOOP) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_PUBLIC_LOOP;
spin_unlock_irq(phba->host->host_lock);
} else {
/*
* If we are a N-port connected to a Fabric, fixup sparam's so
* logins to devices on remote loops work.
*/
phba->fc_sparam.cmn.altBbCredit = 1;
}
phba->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
ndlp->nlp_class_sup = 0;
if (sp->cls1.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS1;
if (sp->cls2.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS2;
if (sp->cls3.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS3;
if (sp->cls4.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS4;
ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
sp->cmn.bbRcvSizeLsb;
memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto fail;
phba->hba_state = LPFC_FABRIC_CFG_LINK;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
if (rc == MBX_NOT_FINISHED)
goto fail_free_mbox;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto fail;
if (lpfc_reg_login(phba, Fabric_DID, (uint8_t *) sp, mbox, 0))
goto fail_free_mbox;
/*
* set_slim mailbox command needs to execute first,
* queue this command to be processed later.
*/
mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
mbox->context2 = ndlp;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
if (rc == MBX_NOT_FINISHED)
goto fail_free_mbox;
return 0;
fail_free_mbox:
mempool_free(mbox, phba->mbox_mem_pool);
fail:
return -ENXIO;
}
/*
* We FLOGIed into an NPort, initiate pt2pt protocol
*/
static int
lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
struct serv_parm *sp)
{
LPFC_MBOXQ_t *mbox;
int rc;
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(phba->host->host_lock);
phba->fc_edtov = FF_DEF_EDTOV;
phba->fc_ratov = FF_DEF_RATOV;
rc = memcmp(&phba->fc_portname, &sp->portName,
sizeof(struct lpfc_name));
if (rc >= 0) {
/* This side will initiate the PLOGI */
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_PT2PT_PLOGI;
spin_unlock_irq(phba->host->host_lock);
/*
* N_Port ID cannot be 0, set our to LocalID the other
* side will be RemoteID.
*/
/* not equal */
if (rc)
phba->fc_myDID = PT2PT_LocalID;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto fail;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, mbox,
MBX_NOWAIT | MBX_STOP_IOCB);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
goto fail;
}
mempool_free(ndlp, phba->nlp_mem_pool);
ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, PT2PT_RemoteID);
if (!ndlp) {
/*
* Cannot find existing Fabric ndlp, so allocate a
* new one
*/
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
goto fail;
lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID);
}
memcpy(&ndlp->nlp_portname, &sp->portName,
sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName,
sizeof(struct lpfc_name));
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
} else {
/* This side will wait for the PLOGI */
mempool_free( ndlp, phba->nlp_mem_pool);
}
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_PT2PT;
spin_unlock_irq(phba->host->host_lock);
/* Start discovery - this should just do CLEAR_LA */
lpfc_disc_start(phba);
return 0;
fail:
return -ENXIO;
}
static void
lpfc_cmpl_els_flogi(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb, struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp = &rspiocb->iocb;
struct lpfc_nodelist *ndlp = cmdiocb->context1;
struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
struct serv_parm *sp;
int rc;
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba)) {
lpfc_nlp_remove(phba, ndlp);
goto out;
}
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
}
/* FLOGI failed, so there is no fabric */
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(phba->host->host_lock);
/* If private loop, then allow max outstandting els to be
* LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
* alpa map would take too long otherwise.
*/
if (phba->alpa_map[0] == 0) {
phba->cfg_discovery_threads =
LPFC_MAX_DISC_THREADS;
}
/* FLOGI failure */
lpfc_printf_log(phba,
KERN_INFO,
LOG_ELS,
"%d:0100 FLOGI failure Data: x%x x%x\n",
phba->brd_no,
irsp->ulpStatus, irsp->un.ulpWord[4]);
goto flogifail;
}
/*
* The FLogI succeeded. Sync the data for the CPU before
* accessing it.
*/
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
sp = prsp->virt + sizeof(uint32_t);
/* FLOGI completes successfully */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0101 FLOGI completes sucessfully "
"Data: x%x x%x x%x x%x\n",
phba->brd_no,
irsp->un.ulpWord[4], sp->cmn.e_d_tov,
sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
if (phba->hba_state == LPFC_FLOGI) {
/*
* If Common Service Parameters indicate Nport
* we are point to point, if Fport we are Fabric.
*/
if (sp->cmn.fPort)
rc = lpfc_cmpl_els_flogi_fabric(phba, ndlp, sp, irsp);
else
rc = lpfc_cmpl_els_flogi_nport(phba, ndlp, sp);
if (!rc)
goto out;
}
flogifail:
lpfc_nlp_remove(phba, ndlp);
if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
(irsp->un.ulpWord[4] != IOERR_SLI_ABORTED &&
irsp->un.ulpWord[4] != IOERR_SLI_DOWN)) {
/* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(phba);
/* Start discovery */
lpfc_disc_start(phba);
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
}
static int
lpfc_issue_els_flogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint8_t retry)
{
struct serv_parm *sp;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
uint8_t *pcmd;
uint16_t cmdsize;
uint32_t tmo;
int rc;
pring = &phba->sli.ring[LPFC_ELS_RING];
cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_FLOGI)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For FLOGI request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
pcmd += sizeof (uint32_t);
memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
sp = (struct serv_parm *) pcmd;
/* Setup CSPs accordingly for Fabric */
sp->cmn.e_d_tov = 0;
sp->cmn.w2.r_a_tov = 0;
sp->cls1.classValid = 0;
sp->cls2.seqDelivery = 1;
sp->cls3.seqDelivery = 1;
if (sp->cmn.fcphLow < FC_PH3)
sp->cmn.fcphLow = FC_PH3;
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
tmo = phba->fc_ratov;
phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
lpfc_set_disctmo(phba);
phba->fc_ratov = tmo;
phba->fc_stat.elsXmitFLOGI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
int
lpfc_els_abort_flogi(struct lpfc_hba * phba)
{
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
struct lpfc_nodelist *ndlp;
IOCB_t *icmd;
/* Abort outstanding I/O on NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0201 Abort outstanding I/O on NPort x%x\n",
phba->brd_no, Fabric_DID);
pring = &phba->sli.ring[LPFC_ELS_RING];
/*
* Check the txcmplq for an iocb that matches the nport the driver is
* searching for.
*/
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
icmd = &iocb->iocb;
if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
ndlp = (struct lpfc_nodelist *)(iocb->context1);
if (ndlp && (ndlp->nlp_DID == Fabric_DID)) {
list_del(&iocb->list);
pring->txcmplq_cnt--;
if ((icmd->un.elsreq64.bdl.ulpIoTag32)) {
lpfc_sli_issue_abort_iotag32
(phba, pring, iocb);
}
if (iocb->iocb_cmpl) {
icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
icmd->un.ulpWord[4] =
IOERR_SLI_ABORTED;
spin_unlock_irq(phba->host->host_lock);
(iocb->iocb_cmpl) (phba, iocb, iocb);
spin_lock_irq(phba->host->host_lock);
} else
lpfc_sli_release_iocbq(phba, iocb);
}
}
}
spin_unlock_irq(phba->host->host_lock);
return 0;
}
int
lpfc_initial_flogi(struct lpfc_hba * phba)
{
struct lpfc_nodelist *ndlp;
/* First look for Fabric ndlp on the unmapped list */
if ((ndlp =
lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED,
Fabric_DID)) == 0) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL))
== 0) {
return (0);
}
lpfc_nlp_init(phba, ndlp, Fabric_DID);
}
else {
phba->fc_unmap_cnt--;
list_del(&ndlp->nlp_listp);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_LIST_MASK;
spin_unlock_irq(phba->host->host_lock);
}
if (lpfc_issue_els_flogi(phba, ndlp, 0)) {
mempool_free( ndlp, phba->nlp_mem_pool);
}
return (1);
}
static void
lpfc_more_plogi(struct lpfc_hba * phba)
{
int sentplogi;
if (phba->num_disc_nodes)
phba->num_disc_nodes--;
/* Continue discovery with <num_disc_nodes> PLOGIs to go */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0232 Continue discovery with %d PLOGIs to go "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt,
phba->fc_flag, phba->hba_state);
/* Check to see if there are more PLOGIs to be sent */
if (phba->fc_flag & FC_NLP_MORE) {
/* go thru NPR list and issue any remaining ELS PLOGIs */
sentplogi = lpfc_els_disc_plogi(phba);
}
return;
}
static void
lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp;
int disc, rc, did, type;
psli = &phba->sli;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &rspiocb->iocb;
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_PLOGI_SND;
spin_unlock_irq(phba->host->host_lock);
/* Since ndlp can be freed in the disc state machine, note if this node
* is being used during discovery.
*/
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
rc = 0;
/* PLOGI completes to NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0102 PLOGI completes to NPort x%x "
"Data: x%x x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4], disc, phba->num_disc_nodes);
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba)) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
goto out;
}
/* ndlp could be freed in DSM, save these values now */
type = ndlp->nlp_type;
did = ndlp->nlp_DID;
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
if (disc) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
}
goto out;
}
/* PLOGI failed */
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
(irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
(irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
}
else {
rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
}
} else {
/* Good status, call state machine */
rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
}
if (type & NLP_FABRIC) {
/* If we cannot login to Nameserver, kick off discovery now */
if ((did == NameServer_DID) && (rc == NLP_STE_FREED_NODE)) {
lpfc_disc_start(phba);
}
goto out;
}
if (disc && phba->num_disc_nodes) {
/* Check to see if there are more PLOGIs to be sent */
lpfc_more_plogi(phba);
}
if (rc != NLP_STE_FREED_NODE) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
}
if (phba->num_disc_nodes == 0) {
if(disc) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
}
lpfc_can_disctmo(phba);
if (phba->fc_flag & FC_RSCN_MODE) {
/* Check to see if more RSCNs came in while we were
* processing this one.
*/
if ((phba->fc_rscn_id_cnt == 0) &&
(!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_RSCN_MODE;
spin_unlock_irq(phba->host->host_lock);
} else {
lpfc_els_handle_rscn(phba);
}
}
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_issue_els_plogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint8_t retry)
{
struct serv_parm *sp;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_PLOGI)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For PLOGI request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
pcmd += sizeof (uint32_t);
memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
sp = (struct serv_parm *) pcmd;
if (sp->cmn.fcphLow < FC_PH_4_3)
sp->cmn.fcphLow = FC_PH_4_3;
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
phba->fc_stat.elsXmitPLOGI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_PLOGI_SND;
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
ndlp->nlp_flag &= ~NLP_PLOGI_SND;
spin_unlock_irq(phba->host->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
return (0);
}
static void
lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_PRLI_SND;
spin_unlock_irq(phba->host->host_lock);
/* PRLI completes to NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0103 PRLI completes to NPort x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4], phba->num_disc_nodes);
phba->fc_prli_sent--;
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba))
goto out;
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
}
/* PRLI failed */
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
(irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
(irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
goto out;
}
else {
lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
}
} else {
/* Good status, call state machine */
lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI);
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint8_t retry)
{
PRLI *npr;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = (sizeof (uint32_t) + sizeof (PRLI));
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_PRLI)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For PRLI request, remainder of payload is service parameters */
memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t)));
*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
pcmd += sizeof (uint32_t);
/* For PRLI, remainder of payload is PRLI parameter page */
npr = (PRLI *) pcmd;
/*
* If our firmware version is 3.20 or later,
* set the following bits for FC-TAPE support.
*/
if (phba->vpd.rev.feaLevelHigh >= 0x02) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->estabImagePair = 1;
npr->readXferRdyDis = 1;
/* For FCP support */
npr->prliType = PRLI_FCP_TYPE;
npr->initiatorFunc = 1;
phba->fc_stat.elsXmitPRLI++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_PRLI_SND;
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
ndlp->nlp_flag &= ~NLP_PRLI_SND;
spin_unlock_irq(phba->host->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
phba->fc_prli_sent++;
return (0);
}
static void
lpfc_more_adisc(struct lpfc_hba * phba)
{
int sentadisc;
if (phba->num_disc_nodes)
phba->num_disc_nodes--;
/* Continue discovery with <num_disc_nodes> ADISCs to go */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0210 Continue discovery with %d ADISCs to go "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt,
phba->fc_flag, phba->hba_state);
/* Check to see if there are more ADISCs to be sent */
if (phba->fc_flag & FC_NLP_MORE) {
lpfc_set_disctmo(phba);
/* go thru NPR list and issue any remaining ELS ADISCs */
sentadisc = lpfc_els_disc_adisc(phba);
}
return;
}
static void
lpfc_rscn_disc(struct lpfc_hba * phba)
{
/* RSCN discovery */
/* go thru NPR list and issue ELS PLOGIs */
if (phba->fc_npr_cnt) {
if (lpfc_els_disc_plogi(phba))
return;
}
if (phba->fc_flag & FC_RSCN_MODE) {
/* Check to see if more RSCNs came in while we were
* processing this one.
*/
if ((phba->fc_rscn_id_cnt == 0) &&
(!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_RSCN_MODE;
spin_unlock_irq(phba->host->host_lock);
} else {
lpfc_els_handle_rscn(phba);
}
}
}
static void
lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp;
LPFC_MBOXQ_t *mbox;
int disc, rc;
psli = &phba->sli;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_ADISC_SND;
spin_unlock_irq(phba->host->host_lock);
/* Since ndlp can be freed in the disc state machine, note if this node
* is being used during discovery.
*/
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
/* ADISC completes to NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0104 ADISC completes to NPort x%x "
"Data: x%x x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4], disc, phba->num_disc_nodes);
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba)) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
goto out;
}
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
if (disc) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
lpfc_set_disctmo(phba);
}
goto out;
}
/* ADISC failed */
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
(irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
(irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
}
else {
lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
}
} else {
/* Good status, call state machine */
lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
}
if (disc && phba->num_disc_nodes) {
/* Check to see if there are more ADISCs to be sent */
lpfc_more_adisc(phba);
/* Check to see if we are done with ADISC authentication */
if (phba->num_disc_nodes == 0) {
lpfc_can_disctmo(phba);
/* If we get here, there is nothing left to wait for */
if ((phba->hba_state < LPFC_HBA_READY) &&
(phba->hba_state != LPFC_CLEAR_LA)) {
/* Link up discovery */
if ((mbox = mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL))) {
phba->hba_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, mbox);
mbox->mbox_cmpl =
lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox
(phba, mbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox,
phba->mbox_mem_pool);
lpfc_disc_flush_list(phba);
psli->ring[(psli->ip_ring)].
flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->fcp_ring)].
flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->next_ring)].
flag &=
~LPFC_STOP_IOCB_EVENT;
phba->hba_state =
LPFC_HBA_READY;
}
}
} else {
lpfc_rscn_disc(phba);
}
}
}
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint8_t retry)
{
ADISC *ap;
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = (sizeof (uint32_t) + sizeof (ADISC));
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_ADISC)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
/* For ADISC request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
pcmd += sizeof (uint32_t);
/* Fill in ADISC payload */
ap = (ADISC *) pcmd;
ap->hardAL_PA = phba->fc_pref_ALPA;
memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
ap->DID = be32_to_cpu(phba->fc_myDID);
phba->fc_stat.elsXmitADISC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_ADISC_SND;
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
ndlp->nlp_flag &= ~NLP_ADISC_SND;
spin_unlock_irq(phba->host->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
return (0);
}
static void
lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->context_un.rsp_iocb = rspiocb;
irsp = &(rspiocb->iocb);
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_SND;
spin_unlock_irq(phba->host->host_lock);
/* LOGO completes to NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0105 LOGO completes to NPort x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
irsp->un.ulpWord[4], phba->num_disc_nodes);
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba))
goto out;
if (irsp->ulpStatus) {
/* Check for retry */
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
}
/* LOGO failed */
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
(irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
(irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
goto out;
}
else {
lpfc_disc_state_machine(phba, ndlp, cmdiocb,
NLP_EVT_CMPL_LOGO);
}
} else {
/* Good status, call state machine */
lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
if (ndlp->nlp_flag & NLP_DELAY_TMO) {
lpfc_unreg_rpi(phba, ndlp);
}
}
out:
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint8_t retry)
{
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING];
cmdsize = 2 * (sizeof (uint32_t) + sizeof (struct lpfc_name));
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_LOGO)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
pcmd += sizeof (uint32_t);
/* Fill in LOGO payload */
*((uint32_t *) (pcmd)) = be32_to_cpu(phba->fc_myDID);
pcmd += sizeof (uint32_t);
memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name));
phba->fc_stat.elsXmitLOGO++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_LOGO_SND;
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
ndlp->nlp_flag &= ~NLP_LOGO_SND;
spin_unlock_irq(phba->host->host_lock);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
return (0);
}
static void
lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
irsp = &rspiocb->iocb;
/* ELS cmd tag <ulpIoTag> completes */
lpfc_printf_log(phba,
KERN_INFO,
LOG_ELS,
"%d:0106 ELS cmd tag x%x completes Data: x%x x%x\n",
phba->brd_no,
irsp->ulpIoTag, irsp->ulpStatus, irsp->un.ulpWord[4]);
/* Check to see if link went down during discovery */
lpfc_els_chk_latt(phba);
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
{
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = (sizeof (uint32_t) + sizeof (SCR));
if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) == 0) {
return (1);
}
lpfc_nlp_init(phba, ndlp, nportid);
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_SCR)) == 0) {
mempool_free( ndlp, phba->nlp_mem_pool);
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
pcmd += sizeof (uint32_t);
/* For SCR, remainder of payload is SCR parameter page */
memset(pcmd, 0, sizeof (SCR));
((SCR *) pcmd)->Function = SCR_FUNC_FULL;
phba->fc_stat.elsXmitSCR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
spin_lock_irq(phba->host->host_lock);
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
spin_unlock_irq(phba->host->host_lock);
mempool_free( ndlp, phba->nlp_mem_pool);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
mempool_free( ndlp, phba->nlp_mem_pool);
return (0);
}
static int
lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
{
IOCB_t *icmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
FARP *fp;
uint8_t *pcmd;
uint32_t *lp;
uint16_t cmdsize;
struct lpfc_nodelist *ondlp;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = (sizeof (uint32_t) + sizeof (FARP));
if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) == 0) {
return (1);
}
lpfc_nlp_init(phba, ndlp, nportid);
if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry,
ndlp, ELS_CMD_RNID)) == 0) {
mempool_free( ndlp, phba->nlp_mem_pool);
return (1);
}
icmd = &elsiocb->iocb;
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
pcmd += sizeof (uint32_t);
/* Fill in FARPR payload */
fp = (FARP *) (pcmd);
memset(fp, 0, sizeof (FARP));
lp = (uint32_t *) pcmd;
*lp++ = be32_to_cpu(nportid);
*lp++ = be32_to_cpu(phba->fc_myDID);
fp->Rflags = 0;
fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name));
memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
if ((ondlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, nportid))) {
memcpy(&fp->OportName, &ondlp->nlp_portname,
sizeof (struct lpfc_name));
memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
sizeof (struct lpfc_name));
}
phba->fc_stat.elsXmitFARPR++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
spin_lock_irq(phba->host->host_lock);
if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
spin_unlock_irq(phba->host->host_lock);
mempool_free( ndlp, phba->nlp_mem_pool);
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
spin_unlock_irq(phba->host->host_lock);
mempool_free( ndlp, phba->nlp_mem_pool);
return (0);
}
void
lpfc_els_retry_delay(unsigned long ptr)
{
struct lpfc_nodelist *ndlp;
struct lpfc_hba *phba;
unsigned long iflag;
struct lpfc_work_evt *evtp;
ndlp = (struct lpfc_nodelist *)ptr;
phba = ndlp->nlp_phba;
evtp = &ndlp->els_retry_evt;
spin_lock_irqsave(phba->host->host_lock, iflag);
if (!list_empty(&evtp->evt_listp)) {
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return;
}
evtp->evt_arg1 = ndlp;
evtp->evt = LPFC_EVT_ELS_RETRY;
list_add_tail(&evtp->evt_listp, &phba->work_list);
if (phba->work_wait)
wake_up(phba->work_wait);
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return;
}
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba;
uint32_t cmd;
uint32_t did;
uint8_t retry;
phba = ndlp->nlp_phba;
spin_lock_irq(phba->host->host_lock);
did = (uint32_t) (ndlp->nlp_DID);
cmd = (uint32_t) (ndlp->nlp_last_elscmd);
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
spin_unlock_irq(phba->host->host_lock);
return;
}
ndlp->nlp_flag &= ~NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
retry = ndlp->nlp_retry;
switch (cmd) {
case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(phba, ndlp, retry);
break;
case ELS_CMD_PLOGI:
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, retry);
break;
case ELS_CMD_ADISC:
ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
lpfc_issue_els_adisc(phba, ndlp, retry);
break;
case ELS_CMD_PRLI:
ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
lpfc_issue_els_prli(phba, ndlp, retry);
break;
case ELS_CMD_LOGO:
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
lpfc_issue_els_logo(phba, ndlp, retry);
break;
}
return;
}
static int
lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
IOCB_t *irsp;
struct lpfc_dmabuf *pcmd;
struct lpfc_nodelist *ndlp;
uint32_t *elscmd;
struct ls_rjt stat;
int retry, maxretry;
int delay;
uint32_t cmd;
retry = 0;
delay = 0;
maxretry = lpfc_max_els_tries;
irsp = &rspiocb->iocb;
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
cmd = 0;
/* Note: context2 may be 0 for internal driver abort
* of delays ELS command.
*/
if (pcmd && pcmd->virt) {
elscmd = (uint32_t *) (pcmd->virt);
cmd = *elscmd++;
}
switch (irsp->ulpStatus) {
case IOSTAT_FCP_RSP_ERROR:
case IOSTAT_REMOTE_STOP:
break;
case IOSTAT_LOCAL_REJECT:
switch ((irsp->un.ulpWord[4] & 0xff)) {
case IOERR_LOOP_OPEN_FAILURE:
if (cmd == ELS_CMD_PLOGI) {
if (cmdiocb->retry == 0) {
delay = 1;
}
}
retry = 1;
break;
case IOERR_SEQUENCE_TIMEOUT:
retry = 1;
if ((cmd == ELS_CMD_FLOGI)
&& (phba->fc_topology != TOPOLOGY_LOOP)) {
delay = 1;
maxretry = 48;
}
break;
case IOERR_NO_RESOURCES:
if (cmd == ELS_CMD_PLOGI) {
delay = 1;
}
retry = 1;
break;
case IOERR_INVALID_RPI:
retry = 1;
break;
}
break;
case IOSTAT_NPORT_RJT:
case IOSTAT_FABRIC_RJT:
if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
retry = 1;
break;
}
break;
case IOSTAT_NPORT_BSY:
case IOSTAT_FABRIC_BSY:
retry = 1;
break;
case IOSTAT_LS_RJT:
stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
/* Added for Vendor specifc support
* Just keep retrying for these Rsn / Exp codes
*/
switch (stat.un.b.lsRjtRsnCode) {
case LSRJT_UNABLE_TPC:
if (stat.un.b.lsRjtRsnCodeExp ==
LSEXP_CMD_IN_PROGRESS) {
if (cmd == ELS_CMD_PLOGI) {
delay = 1;
maxretry = 48;
}
retry = 1;
break;
}
if (cmd == ELS_CMD_PLOGI) {
delay = 1;
maxretry = lpfc_max_els_tries + 1;
retry = 1;
break;
}
break;
case LSRJT_LOGICAL_BSY:
if (cmd == ELS_CMD_PLOGI) {
delay = 1;
maxretry = 48;
}
retry = 1;
break;
}
break;
case IOSTAT_INTERMED_RSP:
case IOSTAT_BA_RJT:
break;
default:
break;
}
if (ndlp->nlp_DID == FDMI_DID) {
retry = 1;
}
if ((++cmdiocb->retry) >= maxretry) {
phba->fc_stat.elsRetryExceeded++;
retry = 0;
}
if (retry) {
/* Retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0107 Retry ELS command x%x to remote "
"NPORT x%x Data: x%x x%x\n",
phba->brd_no,
cmd, ndlp->nlp_DID, cmdiocb->retry, delay);
if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) {
/* If discovery / RSCN timer is running, reset it */
if (timer_pending(&phba->fc_disctmo) ||
(phba->fc_flag & FC_RSCN_MODE)) {
lpfc_set_disctmo(phba);
}
}
phba->fc_stat.elsXmitRetry++;
if (delay) {
phba->fc_stat.elsDelayRetry++;
ndlp->nlp_retry = cmdiocb->retry;
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
ndlp->nlp_flag |= NLP_DELAY_TMO;
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_last_elscmd = cmd;
return (1);
}
switch (cmd) {
case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry);
return (1);
case ELS_CMD_PLOGI:
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, cmdiocb->retry);
return (1);
case ELS_CMD_ADISC:
ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry);
return (1);
case ELS_CMD_PRLI:
ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry);
return (1);
case ELS_CMD_LOGO:
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry);
return (1);
}
}
/* No retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0108 No retry ELS command x%x to remote NPORT x%x "
"Data: x%x x%x\n",
phba->brd_no,
cmd, ndlp->nlp_DID, cmdiocb->retry, ndlp->nlp_flag);
return (0);
}
int
lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb)
{
struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
/* context2 = cmd, context2->next = rsp, context3 = bpl */
if (elsiocb->context2) {
buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
/* Free the response before processing the command. */
if (!list_empty(&buf_ptr1->list)) {
list_remove_head(&buf_ptr1->list, buf_ptr,
struct lpfc_dmabuf,
list);
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
kfree(buf_ptr1);
}
if (elsiocb->context3) {
buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
spin_lock_irq(phba->host->host_lock);
lpfc_sli_release_iocbq(phba, elsiocb);
spin_unlock_irq(phba->host->host_lock);
return 0;
}
static void
lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
struct lpfc_nodelist *ndlp;
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
/* ACC to LOGO completes to NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0109 ACC to LOGO completes to NPort x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_LOGO_ACC;
spin_unlock_irq(phba->host->host_lock);
switch (ndlp->nlp_state) {
case NLP_STE_UNUSED_NODE: /* node is just allocated */
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
break;
case NLP_STE_NPR_NODE: /* NPort Recovery mode */
lpfc_unreg_rpi(phba, ndlp);
break;
default:
break;
}
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
static void
lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_iocbq * rspiocb)
{
struct lpfc_nodelist *ndlp;
LPFC_MBOXQ_t *mbox = NULL;
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
if (cmdiocb->context_un.mbox)
mbox = cmdiocb->context_un.mbox;
/* Check to see if link went down during discovery */
if ((lpfc_els_chk_latt(phba)) || !ndlp) {
if (mbox) {
mempool_free( mbox, phba->mbox_mem_pool);
}
goto out;
}
/* ELS response tag <ulpIoTag> completes */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0110 ELS response tag x%x completes "
"Data: x%x x%x x%x x%x x%x x%x\n",
phba->brd_no,
cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
rspiocb->iocb.un.ulpWord[4], ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
if (mbox) {
if ((rspiocb->iocb.ulpStatus == 0)
&& (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
/* set_slim mailbox command needs to execute first,
* queue this command to be processed later.
*/
lpfc_unreg_rpi(phba, ndlp);
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
mbox->context2 = ndlp;
ndlp->nlp_state = NLP_STE_REG_LOGIN_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_REGLOGIN_LIST);
if (lpfc_sli_issue_mbox(phba, mbox,
(MBX_NOWAIT | MBX_STOP_IOCB))
!= MBX_NOT_FINISHED) {
goto out;
}
/* NOTE: we should have messages for unsuccessful
reglogin */
mempool_free( mbox, phba->mbox_mem_pool);
} else {
mempool_free( mbox, phba->mbox_mem_pool);
if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
}
}
}
out:
if (ndlp) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
spin_unlock_irq(phba->host->host_lock);
}
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
int
lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag,
struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp,
LPFC_MBOXQ_t * mbox, uint8_t newnode)
{
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
oldcmd = &oldiocb->iocb;
switch (flag) {
case ELS_CMD_ACC:
cmdsize = sizeof (uint32_t);
if ((elsiocb =
lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp, ELS_CMD_ACC)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof (uint32_t);
break;
case ELS_CMD_PLOGI:
cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t));
if ((elsiocb =
lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp, ELS_CMD_ACC)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
if (mbox)
elsiocb->context_un.mbox = mbox;
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof (uint32_t);
memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
break;
default:
return (1);
}
if (newnode)
elsiocb->context1 = NULL;
/* Xmit ELS ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0128 Xmit ELS ACC response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
elsiocb->iocb.ulpContext, ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
if (ndlp->nlp_flag & NLP_LOGO_ACC) {
elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
} else {
elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
}
phba->fc_stat.elsXmitACC++;
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
int
lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError,
struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = 2 * sizeof (uint32_t);
if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp, ELS_CMD_LS_RJT)) == 0) {
return (1);
}
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
pcmd += sizeof (uint32_t);
*((uint32_t *) (pcmd)) = rejectError;
/* Xmit ELS RJT <err> response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0129 Xmit ELS RJT x%x response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
rejectError, elsiocb->iocb.ulpIoTag,
elsiocb->iocb.ulpContext, ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
phba->fc_stat.elsXmitLSRJT++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
int
lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba,
struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
ADISC *ap;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = sizeof (uint32_t) + sizeof (ADISC);
if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp, ELS_CMD_ACC)) == 0) {
return (1);
}
/* Xmit ADISC ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0130 Xmit ADISC ACC response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
elsiocb->iocb.ulpContext, ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof (uint32_t);
ap = (ADISC *) (pcmd);
ap->hardAL_PA = phba->fc_pref_ALPA;
memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
ap->DID = be32_to_cpu(phba->fc_myDID);
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
int
lpfc_els_rsp_prli_acc(struct lpfc_hba * phba,
struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
PRLI *npr;
lpfc_vpd_t *vpd;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */
cmdsize = sizeof (uint32_t) + sizeof (PRLI);
if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp,
(ELS_CMD_ACC |
(ELS_CMD_PRLI & ~ELS_RSP_MASK)))) ==
0) {
return (1);
}
/* Xmit PRLI ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0131 Xmit PRLI ACC response tag x%x "
"Data: x%x x%x x%x x%x x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
elsiocb->iocb.ulpContext, ndlp->nlp_DID,
ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
pcmd += sizeof (uint32_t);
/* For PRLI, remainder of payload is PRLI parameter page */
memset(pcmd, 0, sizeof (PRLI));
npr = (PRLI *) pcmd;
vpd = &phba->vpd;
/*
* If our firmware version is 3.20 or later,
* set the following bits for FC-TAPE support.
*/
if (vpd->rev.feaLevelHigh >= 0x02) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->acceptRspCode = PRLI_REQ_EXECUTED;
npr->estabImagePair = 1;
npr->readXferRdyDis = 1;
npr->ConfmComplAllowed = 1;
npr->prliType = PRLI_FCP_TYPE;
npr->initiatorFunc = 1;
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
static int
lpfc_els_rsp_rnid_acc(struct lpfc_hba * phba,
uint8_t format,
struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
RNID *rn;
IOCB_t *icmd;
IOCB_t *oldcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
uint8_t *pcmd;
uint16_t cmdsize;
int rc;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING];
cmdsize = sizeof (uint32_t) + sizeof (uint32_t)
+ (2 * sizeof (struct lpfc_name));
if (format)
cmdsize += sizeof (RNID_TOP_DISC);
if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
ndlp, ELS_CMD_ACC)) == 0) {
return (1);
}
/* Xmit RNID ACC response tag <ulpIoTag> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0132 Xmit RNID ACC response tag x%x "
"Data: x%x\n",
phba->brd_no,
elsiocb->iocb.ulpIoTag,
elsiocb->iocb.ulpContext);
icmd = &elsiocb->iocb;
oldcmd = &oldiocb->iocb;
icmd->ulpContext = oldcmd->ulpContext; /* Xri */
pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
pcmd += sizeof (uint32_t);
memset(pcmd, 0, sizeof (RNID));
rn = (RNID *) (pcmd);
rn->Format = format;
rn->CommonLen = (2 * sizeof (struct lpfc_name));
memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name));
memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
switch (format) {
case 0:
rn->SpecificLen = 0;
break;
case RNID_TOPOLOGY_DISC:
rn->SpecificLen = sizeof (RNID_TOP_DISC);
memcpy(&rn->un.topologyDisc.portName,
&phba->fc_portname, sizeof (struct lpfc_name));
rn->un.topologyDisc.unitType = RNID_HBA;
rn->un.topologyDisc.physPort = 0;
rn->un.topologyDisc.attachedNodes = 0;
break;
default:
rn->CommonLen = 0;
rn->SpecificLen = 0;
break;
}
phba->fc_stat.elsXmitACC++;
elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
elsiocb->context1 = NULL; /* Don't need ndlp for cmpl,
* it could be freed */
spin_lock_irq(phba->host->host_lock);
rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
spin_unlock_irq(phba->host->host_lock);
if (rc == IOCB_ERROR) {
lpfc_els_free_iocb(phba, elsiocb);
return (1);
}
return (0);
}
int
lpfc_els_disc_adisc(struct lpfc_hba * phba)
{
int sentadisc;
struct lpfc_nodelist *ndlp, *next_ndlp;
sentadisc = 0;
/* go thru NPR list and issue any remaining ELS ADISCs */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
if (ndlp->nlp_flag & NLP_NPR_ADISC) {
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
lpfc_nlp_list(phba, ndlp,
NLP_ADISC_LIST);
lpfc_issue_els_adisc(phba, ndlp, 0);
sentadisc++;
phba->num_disc_nodes++;
if (phba->num_disc_nodes >=
phba->cfg_discovery_threads) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_NLP_MORE;
spin_unlock_irq(phba->host->host_lock);
break;
}
}
}
}
if (sentadisc == 0) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_NLP_MORE;
spin_unlock_irq(phba->host->host_lock);
}
return(sentadisc);
}
int
lpfc_els_disc_plogi(struct lpfc_hba * phba)
{
int sentplogi;
struct lpfc_nodelist *ndlp, *next_ndlp;
sentplogi = 0;
/* go thru NPR list and issue any remaining ELS PLOGIs */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if ((ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
(!(ndlp->nlp_flag & NLP_DELAY_TMO))) {
if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
sentplogi++;
phba->num_disc_nodes++;
if (phba->num_disc_nodes >=
phba->cfg_discovery_threads) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_NLP_MORE;
spin_unlock_irq(phba->host->host_lock);
break;
}
}
}
}
if (sentplogi == 0) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_NLP_MORE;
spin_unlock_irq(phba->host->host_lock);
}
return(sentplogi);
}
int
lpfc_els_flush_rscn(struct lpfc_hba * phba)
{
struct lpfc_dmabuf *mp;
int i;
for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
mp = phba->fc_rscn_id_list[i];
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
phba->fc_rscn_id_list[i] = NULL;
}
phba->fc_rscn_id_cnt = 0;
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
spin_unlock_irq(phba->host->host_lock);
lpfc_can_disctmo(phba);
return (0);
}
int
lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did)
{
D_ID ns_did;
D_ID rscn_did;
struct lpfc_dmabuf *mp;
uint32_t *lp;
uint32_t payload_len, cmd, i, match;
ns_did.un.word = did;
match = 0;
/* Never match fabric nodes for RSCNs */
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
return(0);
/* If we are doing a FULL RSCN rediscovery, match everything */
if (phba->fc_flag & FC_RSCN_DISCOVERY) {
return (did);
}
for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
mp = phba->fc_rscn_id_list[i];
lp = (uint32_t *) mp->virt;
cmd = *lp++;
payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
payload_len -= sizeof (uint32_t); /* take off word 0 */
while (payload_len) {
rscn_did.un.word = *lp++;
rscn_did.un.word = be32_to_cpu(rscn_did.un.word);
payload_len -= sizeof (uint32_t);
switch (rscn_did.un.b.resv) {
case 0: /* Single N_Port ID effected */
if (ns_did.un.word == rscn_did.un.word) {
match = did;
}
break;
case 1: /* Whole N_Port Area effected */
if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area))
{
match = did;
}
break;
case 2: /* Whole N_Port Domain effected */
if (ns_did.un.b.domain == rscn_did.un.b.domain)
{
match = did;
}
break;
case 3: /* Whole Fabric effected */
match = did;
break;
default:
/* Unknown Identifier in RSCN list */
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0217 Unknown Identifier in "
"RSCN payload Data: x%x\n",
phba->brd_no, rscn_did.un.word);
break;
}
if (match) {
break;
}
}
}
return (match);
}
static int
lpfc_rscn_recovery_check(struct lpfc_hba * phba)
{
struct lpfc_nodelist *ndlp = NULL, *next_ndlp;
struct list_head *listp;
struct list_head *node_list[7];
int i;
/* Look at all nodes effected by pending RSCNs and move
* them to NPR list.
*/
node_list[0] = &phba->fc_npr_list; /* MUST do this list first */
node_list[1] = &phba->fc_nlpmap_list;
node_list[2] = &phba->fc_nlpunmap_list;
node_list[3] = &phba->fc_prli_list;
node_list[4] = &phba->fc_reglogin_list;
node_list[5] = &phba->fc_adisc_list;
node_list[6] = &phba->fc_plogi_list;
for (i = 0; i < 7; i++) {
listp = node_list[i];
if (list_empty(listp))
continue;
list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
if (!(lpfc_rscn_payload_check(phba, ndlp->nlp_DID)))
continue;
lpfc_disc_state_machine(phba, ndlp, NULL,
NLP_EVT_DEVICE_RECOVERY);
if (ndlp->nlp_flag & NLP_DELAY_TMO) {
ndlp->nlp_flag &= ~NLP_DELAY_TMO;
del_timer_sync(&ndlp->nlp_delayfunc);
if (!list_empty(&ndlp->
els_retry_evt.evt_listp))
list_del_init(&ndlp->
els_retry_evt.evt_listp);
}
}
}
return (0);
}
static int
lpfc_els_rcv_rscn(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb,
struct lpfc_nodelist * ndlp, uint8_t newnode)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
uint32_t payload_len, cmd;
icmd = &cmdiocb->iocb;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
payload_len -= sizeof (uint32_t); /* take off word 0 */
cmd &= ELS_CMD_MASK;
/* RSCN received */
lpfc_printf_log(phba,
KERN_INFO,
LOG_DISCOVERY,
"%d:0214 RSCN received Data: x%x x%x x%x x%x\n",
phba->brd_no,
phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt);
/* If we are about to begin discovery, just ACC the RSCN.
* Discovery processing will satisfy it.
*/
if (phba->hba_state < LPFC_NS_QRY) {
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
newnode);
return (0);
}
/* If we are already processing an RSCN, save the received
* RSCN payload buffer, cmdiocb->context2 to process later.
*/
if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) &&
!(phba->fc_flag & FC_RSCN_DISCOVERY)) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_RSCN_MODE;
spin_unlock_irq(phba->host->host_lock);
phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
/* If we zero, cmdiocb->context2, the calling
* routine will not try to free it.
*/
cmdiocb->context2 = NULL;
/* Deferred RSCN */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0235 Deferred RSCN "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->fc_rscn_id_cnt,
phba->fc_flag, phba->hba_state);
} else {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_RSCN_DISCOVERY;
spin_unlock_irq(phba->host->host_lock);
/* ReDiscovery RSCN */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0234 ReDiscovery RSCN "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->fc_rscn_id_cnt,
phba->fc_flag, phba->hba_state);
}
/* Send back ACC */
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
newnode);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(phba);
return (0);
}
phba->fc_flag |= FC_RSCN_MODE;
phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
/*
* If we zero, cmdiocb->context2, the calling routine will
* not try to free it.
*/
cmdiocb->context2 = NULL;
lpfc_set_disctmo(phba);
/* Send back ACC */
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(phba);
return (lpfc_els_handle_rscn(phba));
}
int
lpfc_els_handle_rscn(struct lpfc_hba * phba)
{
struct lpfc_nodelist *ndlp;
/* Start timer for RSCN processing */
lpfc_set_disctmo(phba);
/* RSCN processed */
lpfc_printf_log(phba,
KERN_INFO,
LOG_DISCOVERY,
"%d:0215 RSCN processed Data: x%x x%x x%x x%x\n",
phba->brd_no,
phba->fc_flag, 0, phba->fc_rscn_id_cnt,
phba->hba_state);
/* To process RSCN, first compare RSCN data with NameServer */
phba->fc_ns_retry = 0;
if ((ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED,
NameServer_DID))) {
/* Good ndlp, issue CT Request to NameServer */
if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) {
/* Wait for NameServer query cmpl before we can
continue */
return (1);
}
} else {
/* If login to NameServer does not exist, issue one */
/* Good status, issue PLOGI to NameServer */
if ((ndlp =
lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID))) {
/* Wait for NameServer login cmpl before we can
continue */
return (1);
}
if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL))
== 0) {
lpfc_els_flush_rscn(phba);
return (0);
} else {
lpfc_nlp_init(phba, ndlp, NameServer_DID);
ndlp->nlp_type |= NLP_FABRIC;
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_issue_els_plogi(phba, ndlp, 0);
/* Wait for NameServer login cmpl before we can
continue */
return (1);
}
}
lpfc_els_flush_rscn(phba);
return (0);
}
static int
lpfc_els_rcv_flogi(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb,
struct lpfc_nodelist * ndlp, uint8_t newnode)
{
struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
uint32_t *lp = (uint32_t *) pcmd->virt;
IOCB_t *icmd = &cmdiocb->iocb;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
uint32_t cmd, did;
int rc;
cmd = *lp++;
sp = (struct serv_parm *) lp;
/* FLOGI received */
lpfc_set_disctmo(phba);
if (phba->fc_topology == TOPOLOGY_LOOP) {
/* We should never receive a FLOGI in loop mode, ignore it */
did = icmd->un.elsreq64.remoteID;
/* An FLOGI ELS command <elsCmd> was received from DID <did> in
Loop Mode */
lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
"%d:0113 An FLOGI ELS command x%x was received "
"from DID x%x in Loop Mode\n",
phba->brd_no, cmd, did);
return (1);
}
did = Fabric_DID;
if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) {
/* For a FLOGI we accept, then if our portname is greater
* then the remote portname we initiate Nport login.
*/
rc = memcmp(&phba->fc_portname, &sp->portName,
sizeof (struct lpfc_name));
if (!rc) {
if ((mbox = mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL)) == 0) {
return (1);
}
lpfc_linkdown(phba);
lpfc_init_link(phba, mbox,
phba->cfg_topology,
phba->cfg_link_speed);
mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox
(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free( mbox, phba->mbox_mem_pool);
}
return (1);
}
else if (rc > 0) { /* greater than */
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_PT2PT_PLOGI;
spin_unlock_irq(phba->host->host_lock);
}
phba->fc_flag |= FC_PT2PT;
phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
} else {
/* Reject this request because invalid parameters */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
return (1);
}
/* Send back ACC */
lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode);
return (0);
}
static int
lpfc_els_rcv_rnid(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
RNID *rn;
struct ls_rjt stat;
uint32_t cmd, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
rn = (RNID *) lp;
/* RNID received */
switch (rn->Format) {
case 0:
case RNID_TOPOLOGY_DISC:
/* Send back ACC */
lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp);
break;
default:
/* Reject this request because format not supported */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
}
return (0);
}
static int
lpfc_els_rcv_rrq(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_nodelist * ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
RRQ *rrq;
uint32_t cmd, did;
psli = &phba->sli;
pring = &psli->ring[LPFC_FCP_RING];
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
rrq = (RRQ *) lp;
/* RRQ received */
/* Get oxid / rxid from payload and abort it */
spin_lock_irq(phba->host->host_lock);
if ((rrq->SID == be32_to_cpu(phba->fc_myDID))) {
lpfc_sli_abort_iocb(phba, pring, 0, 0, rrq->Oxid,
LPFC_CTX_CTX);
} else {
lpfc_sli_abort_iocb(phba, pring, 0, 0, rrq->Rxid,
LPFC_CTX_CTX);
}
spin_unlock_irq(phba->host->host_lock);
/* ACCEPT the rrq request */
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
return 0;
}
static int
lpfc_els_rcv_farp(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
FARP *fp;
uint32_t cmd, cnt, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
fp = (FARP *) lp;
/* FARP-REQ received from DID <did> */
lpfc_printf_log(phba,
KERN_INFO,
LOG_IP,
"%d:0601 FARP-REQ received from DID x%x\n",
phba->brd_no, did);
/* We will only support match on WWPN or WWNN */
if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
return (0);
}
cnt = 0;
/* If this FARP command is searching for my portname */
if (fp->Mflags & FARP_MATCH_PORT) {
if (memcmp(&fp->RportName, &phba->fc_portname,
sizeof (struct lpfc_name)) == 0)
cnt = 1;
}
/* If this FARP command is searching for my nodename */
if (fp->Mflags & FARP_MATCH_NODE) {
if (memcmp(&fp->RnodeName, &phba->fc_nodename,
sizeof (struct lpfc_name)) == 0)
cnt = 1;
}
if (cnt) {
if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
/* Log back into the node before sending the FARP. */
if (fp->Rflags & FARP_REQUEST_PLOGI) {
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
}
/* Send a FARP response to that node */
if (fp->Rflags & FARP_REQUEST_FARPR) {
lpfc_issue_els_farpr(phba, did, 0);
}
}
}
return (0);
}
static int
lpfc_els_rcv_farpr(struct lpfc_hba * phba,
struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
uint32_t cmd, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
/* FARP-RSP received from DID <did> */
lpfc_printf_log(phba,
KERN_INFO,
LOG_IP,
"%d:0600 FARP-RSP received from DID x%x\n",
phba->brd_no, did);
/* ACCEPT the Farp resp request */
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
return 0;
}
static int
lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
struct lpfc_nodelist * ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
FAN *fp;
uint32_t cmd, did;
icmd = &cmdiocb->iocb;
did = icmd->un.elsreq64.remoteID;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
fp = (FAN *) lp;
/* FAN received */
/* ACCEPT the FAN request */
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
/* The discovery state machine needs to take a different
* action if this node has switched fabrics
*/
if ((memcmp(&fp->FportName, &phba->fc_fabparam.portName,
sizeof (struct lpfc_name)) != 0)
||
(memcmp(&fp->FnodeName, &phba->fc_fabparam.nodeName,
sizeof (struct lpfc_name)) != 0)) {
/* This node has switched fabrics. An FLOGI is required
* after the timeout
*/
return (0);
}
/* Start discovery */
lpfc_disc_start(phba);
}
return (0);
}
void
lpfc_els_timeout(unsigned long ptr)
{
struct lpfc_hba *phba;
unsigned long iflag;
phba = (struct lpfc_hba *)ptr;
if (phba == 0)
return;
spin_lock_irqsave(phba->host->host_lock, iflag);
if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
phba->work_hba_events |= WORKER_ELS_TMO;
if (phba->work_wait)
wake_up(phba->work_wait);
}
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return;
}
void
lpfc_els_timeout_handler(struct lpfc_hba *phba)
{
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
struct lpfc_dmabuf *pcmd;
struct list_head *dlp;
uint32_t *elscmd;
uint32_t els_command;
uint32_t timeout;
uint32_t remote_ID;
if (phba == 0)
return;
spin_lock_irq(phba->host->host_lock);
/* If the timer is already canceled do nothing */
if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
spin_unlock_irq(phba->host->host_lock);
return;
}
timeout = (uint32_t)(phba->fc_ratov << 1);
pring = &phba->sli.ring[LPFC_ELS_RING];
dlp = &pring->txcmplq;
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
cmd = &piocb->iocb;
if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
continue;
}
pcmd = (struct lpfc_dmabuf *) piocb->context2;
elscmd = (uint32_t *) (pcmd->virt);
els_command = *elscmd;
if ((els_command == ELS_CMD_FARP)
|| (els_command == ELS_CMD_FARPR)) {
continue;
}
if (piocb->drvrTimeout > 0) {
if (piocb->drvrTimeout >= timeout) {
piocb->drvrTimeout -= timeout;
} else {
piocb->drvrTimeout = 0;
}
continue;
}
list_del(&piocb->list);
pring->txcmplq_cnt--;
if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
struct lpfc_nodelist *ndlp;
ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext);
remote_ID = ndlp->nlp_DID;
if (cmd->un.elsreq64.bdl.ulpIoTag32) {
lpfc_sli_issue_abort_iotag32(phba,
pring, piocb);
}
} else {
remote_ID = cmd->un.elsreq64.remoteID;
}
lpfc_printf_log(phba,
KERN_ERR,
LOG_ELS,
"%d:0127 ELS timeout Data: x%x x%x x%x x%x\n",
phba->brd_no, els_command,
remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
/*
* The iocb has timed out; abort it.
*/
if (piocb->iocb_cmpl) {
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
spin_unlock_irq(phba->host->host_lock);
(piocb->iocb_cmpl) (phba, piocb, piocb);
spin_lock_irq(phba->host->host_lock);
} else
lpfc_sli_release_iocbq(phba, piocb);
}
if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt) {
phba->els_tmofunc.expires = jiffies + HZ * timeout;
add_timer(&phba->els_tmofunc);
}
spin_unlock_irq(phba->host->host_lock);
}
void
lpfc_els_flush_cmd(struct lpfc_hba * phba)
{
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
struct lpfc_dmabuf *pcmd;
uint32_t *elscmd;
uint32_t els_command;
uint32_t remote_ID;
pring = &phba->sli.ring[LPFC_ELS_RING];
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
cmd = &piocb->iocb;
if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
continue;
}
/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
if ((cmd->ulpCommand == CMD_QUE_RING_BUF_CN) ||
(cmd->ulpCommand == CMD_QUE_RING_BUF64_CN) ||
(cmd->ulpCommand == CMD_CLOSE_XRI_CN) ||
(cmd->ulpCommand == CMD_ABORT_XRI_CN)) {
continue;
}
pcmd = (struct lpfc_dmabuf *) piocb->context2;
elscmd = (uint32_t *) (pcmd->virt);
els_command = *elscmd;
if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
struct lpfc_nodelist *ndlp;
ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext);
remote_ID = ndlp->nlp_DID;
if (phba->hba_state == LPFC_HBA_READY) {
continue;
}
} else {
remote_ID = cmd->un.elsreq64.remoteID;
}
list_del(&piocb->list);
pring->txcmplq_cnt--;
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
if (piocb->iocb_cmpl) {
spin_unlock_irq(phba->host->host_lock);
(piocb->iocb_cmpl) (phba, piocb, piocb);
spin_lock_irq(phba->host->host_lock);
}
else
lpfc_sli_release_iocbq(phba, piocb);
}
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
cmd = &piocb->iocb;
if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
continue;
}
pcmd = (struct lpfc_dmabuf *) piocb->context2;
elscmd = (uint32_t *) (pcmd->virt);
els_command = *elscmd;
if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
struct lpfc_nodelist *ndlp;
ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext);
remote_ID = ndlp->nlp_DID;
if (phba->hba_state == LPFC_HBA_READY) {
continue;
}
} else {
remote_ID = cmd->un.elsreq64.remoteID;
}
list_del(&piocb->list);
pring->txcmplq_cnt--;
cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
if (piocb->iocb_cmpl) {
spin_unlock_irq(phba->host->host_lock);
(piocb->iocb_cmpl) (phba, piocb, piocb);
spin_lock_irq(phba->host->host_lock);
}
else
lpfc_sli_release_iocbq(phba, piocb);
}
spin_unlock_irq(phba->host->host_lock);
return;
}
void
lpfc_els_unsol_event(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb)
{
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *mp;
uint32_t *lp;
IOCB_t *icmd;
struct ls_rjt stat;
uint32_t cmd;
uint32_t did;
uint32_t newnode;
uint32_t drop_cmd = 0; /* by default do NOT drop received cmd */
uint32_t rjt_err = 0;
psli = &phba->sli;
icmd = &elsiocb->iocb;
if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) &&
((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) {
/* Not enough posted buffers; Try posting more buffers */
phba->fc_stat.NoRcvBuf++;
lpfc_post_buffer(phba, pring, 0, 1);
return;
}
/* If there are no BDEs associated with this IOCB,
* there is nothing to do.
*/
if (icmd->ulpBdeCount == 0)
return;
/* type of ELS cmd is first 32bit word in packet */
mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un.
cont64[0].
addrHigh,
icmd->un.
cont64[0].addrLow));
if (mp == 0) {
drop_cmd = 1;
goto dropit;
}
newnode = 0;
lp = (uint32_t *) mp->virt;
cmd = *lp++;
lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1);
if (icmd->ulpStatus) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
drop_cmd = 1;
goto dropit;
}
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(phba)) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
drop_cmd = 1;
goto dropit;
}
did = icmd->un.rcvels.remoteID;
if ((ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did)) == 0) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL))
== 0) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
drop_cmd = 1;
goto dropit;
}
lpfc_nlp_init(phba, ndlp, did);
newnode = 1;
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
ndlp->nlp_type |= NLP_FABRIC;
}
}
phba->fc_stat.elsRcvFrame++;
elsiocb->context1 = ndlp;
elsiocb->context2 = mp;
if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
cmd &= ELS_CMD_MASK;
}
/* ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"%d:0112 ELS command x%x received from NPORT x%x "
"Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state);
switch (cmd) {
case ELS_CMD_PLOGI:
phba->fc_stat.elsRcvPLOGI++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI);
break;
case ELS_CMD_FLOGI:
phba->fc_stat.elsRcvFLOGI++;
lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode);
if (newnode) {
mempool_free( ndlp, phba->nlp_mem_pool);
}
break;
case ELS_CMD_LOGO:
phba->fc_stat.elsRcvLOGO++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
break;
case ELS_CMD_PRLO:
phba->fc_stat.elsRcvPRLO++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
break;
case ELS_CMD_RSCN:
phba->fc_stat.elsRcvRSCN++;
lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode);
if (newnode) {
mempool_free( ndlp, phba->nlp_mem_pool);
}
break;
case ELS_CMD_ADISC:
phba->fc_stat.elsRcvADISC++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC);
break;
case ELS_CMD_PDISC:
phba->fc_stat.elsRcvPDISC++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC);
break;
case ELS_CMD_FARPR:
phba->fc_stat.elsRcvFARPR++;
lpfc_els_rcv_farpr(phba, elsiocb, ndlp);
break;
case ELS_CMD_FARP:
phba->fc_stat.elsRcvFARP++;
lpfc_els_rcv_farp(phba, elsiocb, ndlp);
break;
case ELS_CMD_FAN:
phba->fc_stat.elsRcvFAN++;
lpfc_els_rcv_fan(phba, elsiocb, ndlp);
break;
case ELS_CMD_RRQ:
phba->fc_stat.elsRcvRRQ++;
lpfc_els_rcv_rrq(phba, elsiocb, ndlp);
break;
case ELS_CMD_PRLI:
phba->fc_stat.elsRcvPRLI++;
if (phba->hba_state < LPFC_DISC_AUTH) {
rjt_err = 1;
break;
}
lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
break;
case ELS_CMD_RNID:
phba->fc_stat.elsRcvRNID++;
lpfc_els_rcv_rnid(phba, elsiocb, ndlp);
break;
default:
/* Unsupported ELS command, reject */
rjt_err = 1;
/* Unknown ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
"%d:0115 Unknown ELS command x%x received from "
"NPORT x%x\n", phba->brd_no, cmd, did);
if (newnode) {
mempool_free( ndlp, phba->nlp_mem_pool);
}
break;
}
/* check if need to LS_RJT received ELS cmd */
if (rjt_err) {
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp);
}
if (elsiocb->context2) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
dropit:
/* check if need to drop received ELS cmd */
if (drop_cmd == 1) {
lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
"%d:0111 Dropping received ELS cmd "
"Data: x%x x%x\n", phba->brd_no,
icmd->ulpStatus, icmd->un.ulpWord[4]);
phba->fc_stat.elsRcvDrop++;
}
return;
}
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