/*******************************************************************
* 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"
/* Called to verify a rcv'ed ADISC was intended for us. */
static int
lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
struct lpfc_name * nn, struct lpfc_name * pn)
{
/* Compare the ADISC rsp WWNN / WWPN matches our internal node
* table entry for that node.
*/
if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
return (0);
if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
return (0);
/* we match, return success */
return (1);
}
int
lpfc_check_sparm(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, struct serv_parm * sp,
uint32_t class)
{
volatile struct serv_parm *hsp = &phba->fc_sparam;
uint16_t hsp_value, ssp_value = 0;
/*
* The receive data field size and buffer-to-buffer receive data field
* size entries are 16 bits but are represented as two 8-bit fields in
* the driver data structure to account for rsvd bits and other control
* bits. Reconstruct and compare the fields as a 16-bit values before
* correcting the byte values.
*/
if (sp->cls1.classValid) {
hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
hsp->cls1.rcvDataSizeLsb;
ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
sp->cls1.rcvDataSizeLsb;
if (ssp_value > hsp_value) {
sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
}
} else if (class == CLASS1) {
return 0;
}
if (sp->cls2.classValid) {
hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
hsp->cls2.rcvDataSizeLsb;
ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
sp->cls2.rcvDataSizeLsb;
if (ssp_value > hsp_value) {
sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
}
} else if (class == CLASS2) {
return 0;
}
if (sp->cls3.classValid) {
hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
hsp->cls3.rcvDataSizeLsb;
ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
sp->cls3.rcvDataSizeLsb;
if (ssp_value > hsp_value) {
sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
}
} else if (class == CLASS3) {
return 0;
}
/*
* Preserve the upper four bits of the MSB from the PLOGI response.
* These bits contain the Buffer-to-Buffer State Change Number
* from the target and need to be passed to the FW.
*/
hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
if (ssp_value > hsp_value) {
sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
(hsp->cmn.bbRcvSizeMsb & 0x0F);
}
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
return 1;
}
static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_dmabuf *pcmd, *prsp;
uint32_t *lp;
void *ptr = NULL;
IOCB_t *irsp;
irsp = &rspiocb->iocb;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
/* For lpfc_els_abort, context2 could be zero'ed to delay
* freeing associated memory till after ABTS completes.
*/
if (pcmd) {
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
list);
if (prsp) {
lp = (uint32_t *) prsp->virt;
ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
}
}
else {
/* Force ulpStatus error since we are returning NULL ptr */
if (!(irsp->ulpStatus)) {
irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
}
ptr = NULL;
}
return (ptr);
}
/*
* Free resources / clean up outstanding I/Os
* associated with a LPFC_NODELIST entry. This
* routine effectively results in a "software abort".
*/
int
lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
int send_abts)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *icmd;
int found = 0;
/* 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 "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING];
/* First check the txq */
do {
found = 0;
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
/* Check to see if iocb matches the nport we are looking
for */
if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
found = 1;
/* It matches, so deque and call compl with an
error */
list_del(&iocb->list);
pring->txq_cnt--;
if (iocb->iocb_cmpl) {
icmd = &iocb->iocb;
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);
break;
}
}
spin_unlock_irq(phba->host->host_lock);
} while (found);
/* Everything on txcmplq will be returned by firmware
* with a no rpi / linkdown / abort error. For ring 0,
* ELS discovery, we want to get rid of it right here.
*/
/* Next check the txcmplq */
do {
found = 0;
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
list) {
/* Check to see if iocb matches the nport we are looking
for */
if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
found = 1;
/* It matches, so deque and call compl with an
error */
list_del(&iocb->list);
pring->txcmplq_cnt--;
icmd = &iocb->iocb;
/* If the driver is completing an ELS
* command early, flush it out of the firmware.
*/
if (send_abts &&
(icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
(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);
break;
}
}
spin_unlock_irq(phba->host->host_lock);
} while(found);
/* If we are delaying issuing an ELS command, cancel it */
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_rcv_plogi(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
int rc;
memset(&stat, 0, sizeof (struct ls_rjt));
if (phba->hba_state <= LPFC_FLOGI) {
/* Before responding to PLOGI, check for pt2pt mode.
* If we are pt2pt, with an outstanding FLOGI, abort
* the FLOGI and resend it first.
*/
if (phba->fc_flag & FC_PT2PT) {
lpfc_els_abort_flogi(phba);
if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
/* If the other side is supposed to initiate
* the PLOGI anyway, just ACC it now and
* move on with discovery.
*/
phba->fc_edtov = FF_DEF_EDTOV;
phba->fc_ratov = FF_DEF_RATOV;
/* Start discovery - this should just do
CLEAR_LA */
lpfc_disc_start(phba);
}
else {
lpfc_initial_flogi(phba);
}
}
else {
stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
ndlp);
return 0;
}
}
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
/* Reject this request because invalid parameters */
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
return (0);
}
icmd = &cmdiocb->iocb;
/* PLOGI chkparm OK */
lpfc_printf_log(phba,
KERN_INFO,
LOG_ELS,
"%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
phba->brd_no,
ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
ndlp->nlp_rpi);
if ((phba->cfg_fcp_class == 2) &&
(sp->cls2.classValid)) {
ndlp->nlp_fcp_info |= CLASS2;
} else {
ndlp->nlp_fcp_info |= CLASS3;
}
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;
/* no need to reg_login if we are already in one of these states */
switch(ndlp->nlp_state) {
case NLP_STE_NPR_NODE:
if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
break;
case NLP_STE_REG_LOGIN_ISSUE:
case NLP_STE_PRLI_ISSUE:
case NLP_STE_UNMAPPED_NODE:
case NLP_STE_MAPPED_NODE:
lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
return (1);
}
if ((phba->fc_flag & FC_PT2PT)
&& !(phba->fc_flag & FC_PT2PT_PLOGI)) {
/* rcv'ed PLOGI decides what our NPortId will be */
phba->fc_myDID = icmd->un.rcvels.parmRo;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox == NULL)
goto out;
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 out;
}
lpfc_can_disctmo(phba);
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox == NULL)
goto out;
if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
(uint8_t *) sp, mbox, 0)) {
mempool_free( mbox, phba->mbox_mem_pool);
goto out;
}
/* ACC PLOGI rsp command needs to execute first,
* queue this mbox command to be processed later.
*/
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
mbox->context2 = ndlp;
ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
/* If there is an outstanding PLOGI issued, abort it before
* sending ACC rsp to PLOGI recieved.
*/
if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp, 1);
}
ndlp->nlp_flag |= NLP_RCV_PLOGI;
lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
return (1);
out:
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
return (0);
}
static int
lpfc_rcv_padisc(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_dmabuf *pcmd;
struct serv_parm *sp;
struct lpfc_name *pnn, *ppn;
struct ls_rjt stat;
ADISC *ap;
IOCB_t *icmd;
uint32_t *lp;
uint32_t cmd;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
if (cmd == ELS_CMD_ADISC) {
ap = (ADISC *) lp;
pnn = (struct lpfc_name *) & ap->nodeName;
ppn = (struct lpfc_name *) & ap->portName;
} else {
sp = (struct serv_parm *) lp;
pnn = (struct lpfc_name *) & sp->nodeName;
ppn = (struct lpfc_name *) & sp->portName;
}
icmd = &cmdiocb->iocb;
if ((icmd->ulpStatus == 0) &&
(lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
if (cmd == ELS_CMD_ADISC) {
lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
}
else {
lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
NULL, 0);
}
return (1);
}
/* 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);
ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
/* 1 sec timeout */
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
return (0);
}
static int
lpfc_rcv_logo(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp,
struct lpfc_iocbq *cmdiocb)
{
/* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
/* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
* PLOGIs during LOGO storms from a device.
*/
ndlp->nlp_flag |= NLP_LOGO_ACC;
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
if (!(ndlp->nlp_type & NLP_FABRIC)) {
/* Only try to re-login if this is NOT a Fabric Node */
ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
}
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
/* The driver has to wait until the ACC completes before it continues
* processing the LOGO. The action will resume in
* lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
* unreg_login, the driver waits so the ACC does not get aborted.
*/
return (0);
}
static void
lpfc_rcv_prli(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
PRLI *npr;
struct fc_rport *rport = ndlp->rport;
u32 roles;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
(npr->prliType == PRLI_FCP_TYPE)) {
if (npr->initiatorFunc)
ndlp->nlp_type |= NLP_FCP_INITIATOR;
if (npr->targetFunc)
ndlp->nlp_type |= NLP_FCP_TARGET;
if (npr->Retry)
ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
}
if (rport) {
/* We need to update the rport role values */
roles = FC_RPORT_ROLE_UNKNOWN;
if (ndlp->nlp_type & NLP_FCP_INITIATOR)
roles |= FC_RPORT_ROLE_FCP_INITIATOR;
if (ndlp->nlp_type & NLP_FCP_TARGET)
roles |= FC_RPORT_ROLE_FCP_TARGET;
fc_remote_port_rolechg(rport, roles);
}
}
static uint32_t
lpfc_disc_set_adisc(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp)
{
/* Check config parameter use-adisc or FCP-2 */
if ((phba->cfg_use_adisc == 0) &&
!(phba->fc_flag & FC_RSCN_MODE)) {
if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
return (0);
}
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_NPR_ADISC;
spin_unlock_irq(phba->host->host_lock);
return (1);
}
static uint32_t
lpfc_disc_noop(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
/* This routine does nothing, just return the current state */
return (ndlp->nlp_state);
}
static uint32_t
lpfc_disc_illegal(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0253 Illegal State Transition: node x%x event x%x, "
"state x%x Data: x%x x%x\n",
phba->brd_no,
ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
ndlp->nlp_flag);
return (ndlp->nlp_state);
}
/* Start of Discovery State Machine routines */
static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
ndlp->nlp_state = NLP_STE_UNUSED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
return (ndlp->nlp_state);
}
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
lpfc_issue_els_logo(phba, ndlp, 0);
lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_LOGO_ACC;
spin_unlock_irq(phba->host->host_lock);
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_rm_unused_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb = arg;
struct lpfc_dmabuf *pcmd;
struct serv_parm *sp;
uint32_t *lp;
struct ls_rjt stat;
int port_cmp;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
memset(&stat, 0, sizeof (struct ls_rjt));
/* For a PLOGI, we only accept if our portname is less
* than the remote portname.
*/
phba->fc_stat.elsLogiCol++;
port_cmp = memcmp(&phba->fc_portname, &sp->portName,
sizeof (struct lpfc_name));
if (port_cmp >= 0) {
/* Reject this request because the remote node will accept
ours */
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
}
else {
lpfc_rcv_plogi(phba, ndlp, cmdiocb);
} /* if our portname was less */
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp, 1);
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
if (evt == NLP_EVT_RCV_LOGO) {
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
}
else {
lpfc_issue_els_logo(phba, ndlp, 0);
}
/* Put ndlp in npr list set plogi timer for 1 sec */
ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb, *rspiocb;
struct lpfc_dmabuf *pcmd, *prsp;
uint32_t *lp;
IOCB_t *irsp;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
cmdiocb = (struct lpfc_iocbq *) arg;
rspiocb = cmdiocb->context_un.rsp_iocb;
if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
return (ndlp->nlp_state);
}
irsp = &rspiocb->iocb;
if (irsp->ulpStatus)
goto out;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
prsp = list_get_first(&pcmd->list,
struct lpfc_dmabuf,
list);
lp = (uint32_t *) prsp->virt;
sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
goto out;
/* PLOGI chkparm OK */
lpfc_printf_log(phba,
KERN_INFO,
LOG_ELS,
"%d:0121 PLOGI chkparm OK "
"Data: x%x x%x x%x x%x\n",
phba->brd_no,
ndlp->nlp_DID, ndlp->nlp_state,
ndlp->nlp_flag, ndlp->nlp_rpi);
if ((phba->cfg_fcp_class == 2) &&
(sp->cls2.classValid)) {
ndlp->nlp_fcp_info |= CLASS2;
} else {
ndlp->nlp_fcp_info |= CLASS3;
}
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;
if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL)))
goto out;
lpfc_unreg_rpi(phba, ndlp);
if (lpfc_reg_login
(phba, irsp->un.elsreq64.remoteID,
(uint8_t *) sp, mbox, 0) == 0) {
/* set_slim mailbox command needs to
* execute first, queue this command to
* be processed later.
*/
switch(ndlp->nlp_DID) {
case NameServer_DID:
mbox->mbox_cmpl =
lpfc_mbx_cmpl_ns_reg_login;
break;
case FDMI_DID:
mbox->mbox_cmpl =
lpfc_mbx_cmpl_fdmi_reg_login;
break;
default:
mbox->mbox_cmpl =
lpfc_mbx_cmpl_reg_login;
}
mbox->context2 = ndlp;
if (lpfc_sli_issue_mbox(phba, mbox,
(MBX_NOWAIT | MBX_STOP_IOCB))
!= MBX_NOT_FINISHED) {
ndlp->nlp_state =
NLP_STE_REG_LOGIN_ISSUE;
lpfc_nlp_list(phba, ndlp,
NLP_REGLOGIN_LIST);
return (ndlp->nlp_state);
}
mempool_free(mbox, phba->mbox_mem_pool);
} else {
mempool_free(mbox, phba->mbox_mem_pool);
}
out:
/* Free this node since the driver cannot login or has the wrong
sparm */
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp, 1);
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp, 1);
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
/* software abort outstanding ADISC */
lpfc_els_abort(phba, ndlp, 1);
cmdiocb = (struct lpfc_iocbq *) arg;
if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
return (ndlp->nlp_state);
}
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* software abort outstanding ADISC */
lpfc_els_abort(phba, ndlp, 0);
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* Treat like rcv logo */
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb, *rspiocb;
IOCB_t *irsp;
ADISC *ap;
cmdiocb = (struct lpfc_iocbq *) arg;
rspiocb = cmdiocb->context_un.rsp_iocb;
ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
irsp = &rspiocb->iocb;
if ((irsp->ulpStatus) ||
(!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
/* 1 sec timeout */
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
lpfc_unreg_rpi(phba, ndlp);
return (ndlp->nlp_state);
}
if (ndlp->nlp_type & NLP_FCP_TARGET) {
ndlp->nlp_state = NLP_STE_MAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
} else {
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
}
return (ndlp->nlp_state);
}
static uint32_t
lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
/* software abort outstanding ADISC */
lpfc_els_abort(phba, ndlp, 1);
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
/* software abort outstanding ADISC */
lpfc_els_abort(phba, ndlp, 1);
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
lpfc_disc_set_adisc(phba, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_plogi(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp,
void *arg, uint32_t evt)
{
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb;
uint32_t did;
pmb = (LPFC_MBOXQ_t *) arg;
mb = &pmb->mb;
did = mb->un.varWords[1];
if (mb->mbxStatus) {
/* RegLogin failed */
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0246 RegLogin failed Data: x%x x%x x%x\n",
phba->brd_no,
did, mb->mbxStatus, phba->hba_state);
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
lpfc_issue_els_logo(phba, ndlp, 0);
/* Put ndlp in npr list set plogi timer for 1 sec */
ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
return (ndlp->nlp_state);
}
ndlp->nlp_rpi = mb->un.varWords[0];
/* Only if we are not a fabric nport do we issue PRLI */
if (!(ndlp->nlp_type & NLP_FABRIC)) {
ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
lpfc_issue_els_prli(phba, ndlp, 0);
} else {
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
}
return (ndlp->nlp_state);
}
static uint32_t
lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_plogi(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* Software abort outstanding PRLI before sending acc */
lpfc_els_abort(phba, ndlp, 1);
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
/* This routine is envoked when we rcv a PRLO request from a nport
* we are logged into. We should send back a PRLO rsp setting the
* appropriate bits.
* NEXT STATE = PRLI_ISSUE
*/
static uint32_t
lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb, *rspiocb;
IOCB_t *irsp;
PRLI *npr;
cmdiocb = (struct lpfc_iocbq *) arg;
rspiocb = cmdiocb->context_un.rsp_iocb;
npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
irsp = &rspiocb->iocb;
if (irsp->ulpStatus) {
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
return (ndlp->nlp_state);
}
/* Check out PRLI rsp */
ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
(npr->prliType == PRLI_FCP_TYPE)) {
if (npr->initiatorFunc)
ndlp->nlp_type |= NLP_FCP_INITIATOR;
if (npr->targetFunc)
ndlp->nlp_type |= NLP_FCP_TARGET;
if (npr->Retry)
ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
}
ndlp->nlp_state = NLP_STE_MAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
return (ndlp->nlp_state);
}
/*! lpfc_device_rm_prli_issue
*
* \pre
* \post
* \param phba
* \param ndlp
* \param arg
* \param evt
* \return uint32_t
*
* \b Description:
* This routine is envoked when we a request to remove a nport we are in the
* process of PRLIing. We should software abort outstanding prli, unreg
* login, send a logout. We will change node state to UNUSED_NODE, put it
* on plogi list so it can be freed when LOGO completes.
*
*/
static uint32_t
lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
/* software abort outstanding PRLI */
lpfc_els_abort(phba, ndlp, 1);
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
/*! lpfc_device_recov_prli_issue
*
* \pre
* \post
* \param phba
* \param ndlp
* \param arg
* \param evt
* \return uint32_t
*
* \b Description:
* The routine is envoked when the state of a device is unknown, like
* during a link down. We should remove the nodelist entry from the
* unmapped list, issue a UNREG_LOGIN, do a software abort of the
* outstanding PRLI command, then free the node entry.
*/
static uint32_t
lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
/* software abort outstanding PRLI */
lpfc_els_abort(phba, ndlp, 1);
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_plogi(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_prli(phba, ndlp, cmdiocb);
lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* Treat like rcv logo */
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
lpfc_disc_set_adisc(phba, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_plogi(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* flush the target */
spin_lock_irq(phba->host->host_lock);
lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
spin_unlock_irq(phba->host->host_lock);
/* Treat like rcv logo */
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
lpfc_disc_set_adisc(phba, ndlp);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
/* Ignore PLOGI if we have an outstanding LOGO */
if (ndlp->nlp_flag & NLP_LOGO_SND) {
return (ndlp->nlp_state);
}
if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
spin_unlock_irq(phba->host->host_lock);
return (ndlp->nlp_state);
}
/* send PLOGI immediately, move to PLOGI issue state */
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
}
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
struct ls_rjt stat;
cmdiocb = (struct lpfc_iocbq *) arg;
memset(&stat, 0, sizeof (struct ls_rjt));
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
if (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);
} else {
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
}
}
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_logo(phba, ndlp, cmdiocb);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_rcv_padisc(phba, ndlp, cmdiocb);
if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
if (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);
} else {
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
}
}
return (ndlp->nlp_state);
}
static uint32_t
lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
if (ndlp->nlp_flag & NLP_DELAY_TMO) {
if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
return (ndlp->nlp_state);
} else {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_DELAY_TMO;
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&ndlp->nlp_delayfunc);
if (!list_empty(&ndlp->els_retry_evt.evt_listp))
list_del_init(&ndlp->els_retry_evt.evt_listp);
}
}
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, ndlp, 0);
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
lpfc_unreg_rpi(phba, ndlp);
/* This routine does nothing, just return the current state */
return (ndlp->nlp_state);
}
static uint32_t
lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb;
pmb = (LPFC_MBOXQ_t *) arg;
mb = &pmb->mb;
ndlp->nlp_rpi = mb->un.varWords[0];
return (ndlp->nlp_state);
}
static uint32_t
lpfc_device_rm_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
return (NLP_STE_FREED_NODE);
}
static uint32_t
lpfc_device_recov_npr_node(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg,
uint32_t evt)
{
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(phba->host->host_lock);
return (ndlp->nlp_state);
}
/* This next section defines the NPort Discovery State Machine */
/* There are 4 different double linked lists nodelist entries can reside on.
* The plogi list and adisc list are used when Link Up discovery or RSCN
* processing is needed. Each list holds the nodes that we will send PLOGI
* or ADISC on. These lists will keep track of what nodes will be effected
* by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
* The unmapped_list will contain all nodes that we have successfully logged
* into at the Fibre Channel level. The mapped_list will contain all nodes
* that are mapped FCP targets.
*/
/*
* The bind list is a list of undiscovered (potentially non-existent) nodes
* that we have saved binding information on. This information is used when
* nodes transition from the unmapped to the mapped list.
*/
/* For UNUSED_NODE state, the node has just been allocated .
* For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
* the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
* and put on the unmapped list. For ADISC processing, the node is taken off
* the ADISC list and placed on either the mapped or unmapped list (depending
* on its previous state). Once on the unmapped list, a PRLI is issued and the
* state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
* changed to UNMAPPED_NODE. If the completion indicates a mapped
* node, the node is taken off the unmapped list. The binding list is checked
* for a valid binding, or a binding is automatically assigned. If binding
* assignment is unsuccessful, the node is left on the unmapped list. If
* binding assignment is successful, the associated binding list entry (if
* any) is removed, and the node is placed on the mapped list.
*/
/*
* For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
* lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
* expire, all effected nodes will receive a DEVICE_RM event.
*/
/*
* For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
* to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
* check, additional nodes may be added or removed (via DEVICE_RM) to / from
* the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
* we will first process the ADISC list. 32 entries are processed initially and
* ADISC is initited for each one. Completions / Events for each node are
* funnelled thru the state machine. As each node finishes ADISC processing, it
* starts ADISC for any nodes waiting for ADISC processing. If no nodes are
* waiting, and the ADISC list count is identically 0, then we are done. For
* Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
* can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
* list. 32 entries are processed initially and PLOGI is initited for each one.
* Completions / Events for each node are funnelled thru the state machine. As
* each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
* for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
* indentically 0, then we are done. We have now completed discovery / RSCN
* handling. Upon completion, ALL nodes should be on either the mapped or
* unmapped lists.
*/
static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
(struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
/* Action routine Event Current State */
lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
lpfc_rcv_els_unused_node, /* RCV_PRLI */
lpfc_rcv_logo_unused_node, /* RCV_LOGO */
lpfc_rcv_els_unused_node, /* RCV_ADISC */
lpfc_rcv_els_unused_node, /* RCV_PDISC */
lpfc_rcv_els_unused_node, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_device_rm_unused_node, /* DEVICE_RM */
lpfc_disc_illegal, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
lpfc_rcv_els_plogi_issue, /* RCV_PRLI */
lpfc_rcv_els_plogi_issue, /* RCV_LOGO */
lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_device_rm_plogi_issue, /* DEVICE_RM */
lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_device_rm_adisc_issue, /* DEVICE_RM */
lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_device_rm_prli_issue, /* DEVICE_RM */
lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_disc_illegal, /* DEVICE_RM */
lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
lpfc_disc_illegal, /* CMPL_PLOGI */
lpfc_disc_illegal, /* CMPL_PRLI */
lpfc_disc_illegal, /* CMPL_LOGO */
lpfc_disc_illegal, /* CMPL_ADISC */
lpfc_disc_illegal, /* CMPL_REG_LOGIN */
lpfc_disc_illegal, /* DEVICE_RM */
lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
lpfc_rcv_prli_npr_node, /* RCV_PRLI */
lpfc_rcv_logo_npr_node, /* RCV_LOGO */
lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
lpfc_disc_noop, /* CMPL_PLOGI */
lpfc_disc_noop, /* CMPL_PRLI */
lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
lpfc_disc_noop, /* CMPL_ADISC */
lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
lpfc_device_rm_npr_node, /* DEVICE_RM */
lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
};
int
lpfc_disc_state_machine(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
{
uint32_t cur_state, rc;
uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
uint32_t);
ndlp->nlp_disc_refcnt++;
cur_state = ndlp->nlp_state;
/* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
lpfc_printf_log(phba,
KERN_INFO,
LOG_DISCOVERY,
"%d:0211 DSM in event x%x on NPort x%x in state %d "
"Data: x%x\n",
phba->brd_no,
evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
rc = (func) (phba, ndlp, arg, evt);
/* DSM out state <rc> on NPort <nlp_DID> */
lpfc_printf_log(phba,
KERN_INFO,
LOG_DISCOVERY,
"%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
phba->brd_no,
rc, ndlp->nlp_DID, ndlp->nlp_flag);
ndlp->nlp_disc_refcnt--;
/* Check to see if ndlp removal is deferred */
if ((ndlp->nlp_disc_refcnt == 0)
&& (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
spin_unlock_irq(phba->host->host_lock);
lpfc_nlp_remove(phba, ndlp);
return (NLP_STE_FREED_NODE);
}
if (rc == NLP_STE_FREED_NODE)
return (NLP_STE_FREED_NODE);
ndlp->nlp_state = rc;
return (rc);
}
