/* Read the HBA Host Attention Register */ if (lpfc_readl(phba->HAregaddr, &ha_copy)) return1;
if (!(ha_copy & HA_LATT)) return0;
/* Pending Link Event during Discovery */
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0237 Pending Link Event during " "Discovery: State x%x\n",
phba->pport->port_state);
/* CLEAR_LA should re-enable link attention events and *weshouldthenimmediatelytakeaLATTevent.The *LATTprocessingshouldcalllpfc_linkdown()which *willcleanupanyleftoverin-progressdiscovery *events.
*/
set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
if (phba->link_state != LPFC_CLEAR_LA)
lpfc_issue_clear_la(phba, vport);
/* move forward in case of SLI4 FC port loopback test and pt2pt mode */ if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(phba->link_flag & LS_LOOPBACK_MODE) &&
!test_bit(FC_PT2PT, &vport->fc_flag)) {
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) {
rc = -ENODEV; goto fail;
}
}
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { if (sp->cmn.response_multiple_NPort) {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT, "1816 FLOGI NPIV supported, " "response data 0x%x\n",
sp->cmn.response_multiple_NPort);
spin_lock_irq(&phba->hbalock);
phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
} else { /* Because we asked f/w for NPIV it still expects us
to call reg_vnpid at least for the physical host */
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT, "1817 Fabric does not support NPIV " "- configuring single port mode.\n");
spin_lock_irq(&phba->hbalock);
phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
}
}
/* *ForFCweneedtodosomespecialprocessingbecauseoftheSLI *Port'sdefaultsettingsoftheCommonServiceParameters.
*/ if ((phba->sli_rev == LPFC_SLI_REV4) &&
(phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if (fabric_param_changed)
lpfc_unregister_fcf_prep(phba);
/* This should just update the VFI CSPs*/ if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
lpfc_issue_reg_vfi(vport);
}
if (fabric_param_changed &&
!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
/* If our NportID changed, we need to ensure all *remainingNPORTsgetunreg_login'ed.
*/
list_for_each_entry_safe(np, next_np,
&vport->fc_nodes, nlp_listp) { if ((np->nlp_state != NLP_STE_NPR_NODE) ||
!test_bit(NLP_NPR_ADISC, &np->nlp_flag)) continue;
clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
lpfc_unreg_rpi(vport, np);
}
lpfc_cleanup_pending_mbox(vport);
if (phba->sli_rev == LPFC_SLI_REV4) {
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
}
/* If we are pt2pt with another NPort, force NPIV off! */
phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
/* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
phba->fc_topology_changed = 0;
}
/* not equal */ if (rc)
vport->fc_myDID = PT2PT_LocalID;
/* If not registered with a transport, decrement ndlp reference *countindicatingthatndlpcanbesafelyreleasedwhenother *referencesareremoved.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
lpfc_nlp_put(ndlp);
ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); if (!ndlp) { /* *CannotfindexistingFabricndlp,soallocatea *newone
*/
ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); if (!ndlp) goto fail;
}
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); /* Set state will put ndlp onto node list if not already done */
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) goto fail;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool); goto fail;
}
} else { /* This side will wait for the PLOGI. If not registered with *atransport,decrementnodereferencecountindicatingthat *ndlpcanbereleasedwhenotherreferencesareremoved.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
lpfc_nlp_put(ndlp);
/* Start discovery - this should just do CLEAR_LA */
lpfc_disc_start(vport);
}
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { /* One additional decrement on node reference count to *triggerthereleaseofthenode
*/ if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
lpfc_nlp_put(ndlp); goto out;
}
/* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* Address a timing race with dev_loss. If dev_loss *isactiveonthisFPortnode,puttheinitialref *countbacktostopprematurenodereleaseactions.
*/
lpfc_check_nlp_post_devloss(vport, ndlp);
flogi_in_retry = true; goto out;
}
/* The FLOGI will not be retried. If the FPort node is not *registeredwiththeSCSItransport,removetheinitial *referencetotriggernoderelease.
*/ if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
lpfc_nlp_put(ndlp);
/* If this is not a loop open failure, bail out */ if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
((ulp_word4 & IOERR_PARAM_MASK) ==
IOERR_LOOP_OPEN_FAILURE))) { /* Warn FLOGI status */
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0100 FLOGI Status:x%x/x%x " "TMO:x%x\n",
ulp_status, ulp_word4, tmo); goto flogifail;
}
/* FLOGI failed, so there is no fabric */
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
/* If private loop, then allow max outstanding els to be *LPFC_MAX_DISC_THREADS(32).Scanninginthecaseofno *alpamapwouldtaketoolongotherwise.
*/ if (phba->alpa_map[0] == 0)
vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; if ((phba->sli_rev == LPFC_SLI_REV4) &&
(!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) ||
(vport->fc_prevDID != vport->fc_myDID) ||
phba->fc_topology_changed)) { if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) { if (phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
clear_bit(FC_VFI_REGISTERED,
&vport->fc_flag);
phba->fc_topology_changed = 0;
} else {
lpfc_sli4_unreg_all_rpis(vport);
}
}
/* Do not register VFI if the driver aborted FLOGI */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_issue_reg_vfi(vport);
if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) { /* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(vport);
/* Check for a deferred FLOGI ACC condition */ if (phba->defer_flogi_acc.flag) { /* lookup ndlp for received FLOGI */
ndlp = lpfc_findnode_did(vport, 0); if (!ndlp) return0;
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
/* Decrement the held ndlp that was incremented when the *deferredflogiaccflagwasset.
*/ if (phba->defer_flogi_acc.ndlp) {
lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
phba->defer_flogi_acc.ndlp = NULL;
}
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return0; /* Set the node type */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
}
/* Reset the Fabric flag, topology change may have happened */
clear_bit(FC_FABRIC, &vport->fc_flag); if (lpfc_issue_els_flogi(vport, ndlp, 0)) { /* A node reference should be retained while registered with a *transportordev-loss-evtworkispending. *Otherwise,decrementnodereferencetotriggerrelease.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
lpfc_nlp_put(ndlp); return0;
} return1;
}
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return0;
/* NPIV is only supported in Fabrics. */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
}
if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { /* A node reference should be retained while registered with a *transportordev-loss-evtworkispending. *Otherwise,decrementnodereferencetotriggerrelease.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
lpfc_nlp_put(ndlp); return0;
} return1;
}
/* Continue discovery with <num_disc_nodes> PLOGIs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0232 Continue discovery with %d PLOGIs to go " "Data: x%x x%lx x%x\n",
vport->num_disc_nodes,
atomic_read(&vport->fc_plogi_cnt),
vport->fc_flag, vport->port_state); /* Check to see if there are more PLOGIs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) /* go thru NPR nodes and issue any remaining ELS PLOGIs */
lpfc_els_disc_plogi(vport);
/* Now we find out if the NPort we are logging into, matches the WWPN *wehaveforthatndlp.Ifnot,wehavesomeworktodo.
*/
new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
/* return immediately if the WWPN matches ndlp */ if (new_ndlp == ndlp) return ndlp;
if (phba->sli_rev == LPFC_SLI_REV4) {
active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
GFP_KERNEL); if (active_rrqs_xri_bitmap)
memset(active_rrqs_xri_bitmap, 0,
phba->cfg_rrq_xri_bitmap_sz);
}
/* At this point in this routine, we know new_ndlp will be *returned.however,anypreviousGID_FTsthatweredone *wouldhaveupdatednlp_fc4_typeinndlp,sowemustensure *new_ndlphastherightvalue.
*/ if (test_bit(FC_FABRIC, &vport->fc_flag)) {
keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
}
/* if new_ndlp had NLP_UNREG_INP set, keep it */ if (test_bit(NLP_UNREG_INP, &keep_new_nlp_flag))
set_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag); else
clear_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
/* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ if (test_bit(NLP_RPI_REGISTERED, &keep_new_nlp_flag))
set_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag); else
clear_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
/* if ndlp had NLP_UNREG_INP set, keep it */ if (test_bit(NLP_UNREG_INP, &keep_nlp_flag))
set_bit(NLP_UNREG_INP, &ndlp->nlp_flag); else
clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
/* if ndlp had NLP_RPI_REGISTERED set, keep it */ if (test_bit(NLP_RPI_REGISTERED, &keep_nlp_flag))
set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); else
clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
/* Move this back to NPR state */ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { /* The ndlp doesn't have a portname yet, but does have an *NPortID.Thenew_ndlpportnamematchestheRport's *portname.Reinstantiatethenew_ndlpandresetthendlp.
*/
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3179 PLOGI confirm NEW: %x %x\n",
new_ndlp->nlp_DID, keepDID);
/* Two ndlps cannot have the same did on the nodelist. *TheKeepDIDandkeep_nlp_fc4_typeneedtobeswapped *becausendlpisinflightwithnoWWPN.
*/
ndlp->nlp_DID = keepDID;
ndlp->nlp_fc4_type = keep_nlp_fc4_type;
lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* The ndlp and new_ndlp both have WWPNs but are swapping *NPortIdsandattributes.
*/
ndlp->nlp_DID = keepDID;
ndlp->nlp_fc4_type = keep_nlp_fc4_type;
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* Since we are switching over to the new_ndlp, *resettheoldndlpstate
*/ if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE))
keep_nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
ndlp->nrport = keep_nrport;
}
/* Since ndlp can be freed in the disc state machine, note if this node *isbeingusedduringdiscovery.
*/
disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
}
if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc)
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
} /* Warn PLOGI status Don't print the vport to vport rjts */ if (ulp_status != IOSTAT_LS_RJT ||
(((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
(phba)->pport->cfg_log_verbose & LOG_ELS)
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2753 PLOGI DID:%06X " "Status:x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
/* If a PLOGI collision occurred, the node needs to continue *withtheregloginprocess.
*/
spin_lock_irq(&ndlp->lock); if ((test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag) ||
test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)) &&
ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
spin_unlock_irq(&ndlp->lock); goto out;
}
/* No PLOGI collision and the node is not registered with the *scsiornvmetransport.Itisnolongeranactivenode.Just *startthedeviceremoveprocess.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else { /* Good status, call state machine */
prsp = list_get_first(&cmdiocb->cmd_dmabuf->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out;
ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
ndlp->vmid_support = 0; if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
(phba->cfg_vmid_priority_tagging &&
sp->cmn.priority_tagging)) {
lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS, "4018 app_hdr_support %d tagging %d DID x%x\n",
sp->cmn.app_hdr_support,
sp->cmn.priority_tagging,
ndlp->nlp_DID); /* if the dest port supports VMID, mark it in ndlp */
ndlp->vmid_support = 1;
}
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
/* *ForP2Ptopology,retainthenodesothatPLOGIcanbe *attemptedonitagain.
*/ if (test_bit(FC_PT2PT, &vport->fc_flag)) goto out;
/* As long as this node is not registered with the SCSI *orNVMetransportandnootherPRLIsareoutstanding, *itisnolongeranactivenode.Otherwisedevloss *handlesthefinalcleanup.
*/
spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!ndlp->fc4_prli_sent) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else { /* Good status, call state machine. However, if another *PRLIisoutstanding,don'tcallthestatemachine *becausefinaldispositiontoMappedorUnmappedis *completedthere.
*/
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
}
/* SLI3 ports don't support NVME. If this rport is a strict NVME *FC4type,implicitlyLOGO.
*/ if (phba->sli_rev == LPFC_SLI_REV3 &&
ndlp->nlp_fc4_type == NLP_FC4_NVME) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
ndlp->nlp_type);
lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); return1;
}
/* The vport counters are used for lpfc_scan_finished, but *thendlpisusedtotrackoutstandingPRLIsfordifferent *FC4types.
*/
set_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
spin_lock_irq(&ndlp->lock);
vport->fc_prli_sent++;
ndlp->fc4_prli_sent++;
spin_unlock_irq(&ndlp->lock);
/* The driver supports 2 FC4 types. Make sure *aPRLIisissuedforalltypesbeforeexiting.
*/ if (phba->sli_rev == LPFC_SLI_REV4 &&
local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) goto send_next_prli; else return0;
}
/* *Iflinkisdown,clear_laandreg_vpiwillbedoneafter *flogifollowingalinkupevent
*/ if (!lpfc_is_link_up(phba)) return;
/* The ADISCs are complete. Doesn't matter if they *succeededorfailedbecausetheADISCcompletion *routineguaranteestocallthestatemachineand *theRPIiseitherunregistered(failedADISCresponse) *ortheRPIisstillvalidandthenodeismarked *mappedforatarget.Theexchangesshouldbeinthe *correctstate.ThiscodeisspecifictoSLI3.
*/
lpfc_issue_clear_la(phba, vport);
lpfc_issue_reg_vpi(phba, vport); return;
} /* *ForSLI2,weneedtosetport_statetoREADY *andcontinuediscovery.
*/ if (vport->port_state < LPFC_VPORT_READY) { /* If we get here, there is nothing to ADISC */
lpfc_issue_clear_la(phba, vport); if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
vport->num_disc_nodes = 0; /* go thru NPR list, issue ELS PLOGIs */ if (atomic_read(&vport->fc_npr_cnt))
lpfc_els_disc_plogi(vport); if (!vport->num_disc_nodes) {
clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
vport->port_state = LPFC_VPORT_READY;
} else
lpfc_rscn_disc(vport);
}
/** *lpfc_more_adisc-Issuemoreadiscasneeded *@vport:pointertoahostvirtualN_Portdatastructure. * *Thisroutinedetermineswhethertherearemorendlpsona@vport *nodelistneedtohaveAddressDiscover(ADISC)issued.Ifso,itwill *invokethelpfc_els_disc_adisc()routinetoissueADISConthe@vport's *remainingnodeswhichneedtohaveADISCsent.
**/ void
lpfc_more_adisc(struct lpfc_vport *vport)
{ if (vport->num_disc_nodes)
vport->num_disc_nodes--; /* Continue discovery with <num_disc_nodes> ADISCs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0210 Continue discovery with %d ADISCs to go " "Data: x%x x%lx x%x\n",
vport->num_disc_nodes,
atomic_read(&vport->fc_adisc_cnt),
vport->fc_flag, vport->port_state); /* Check to see if there are more ADISCs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) {
lpfc_set_disctmo(vport); /* go thru NPR nodes and issue any remaining ELS ADISCs */
lpfc_els_disc_adisc(vport);
} if (!vport->num_disc_nodes)
lpfc_adisc_done(vport); return;
}
/* Since ndlp can be freed in the disc state machine, note if this node *isbeingusedduringdiscovery.
*/
disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag); /* ADISC completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0104 ADISC completes to NPort x%x " "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, iotag,
ulp_status, ulp_word4,
tmo, disc, vport->num_disc_nodes);
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
}
if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
lpfc_set_disctmo(vport);
} goto out;
} /* Warn ADISC status */
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2755 ADISC DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
/* As long as this node is not registered with the SCSI or NVMe *transport,itisnolongeranactivenode.Otherwise *devlosshandlesthefinalcleanup.
*/
spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else /* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
/* Check to see if there are more ADISCs to be sent */ if (disc && vport->num_disc_nodes)
lpfc_more_adisc(vport);
out:
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
}
/* Check to see if link went down during discovery */
lpfc_els_chk_latt(phba->pport);
lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, "EDC Cmpl: did:x%x refcnt %d",
ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp);
}
/* We are assuming cgd was zero'ed before calling this routine */
/* Configure the congestion detection capability */
cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
/* Descriptor len doesn't include the tag or len fields. */
cgd->desc_len = cpu_to_be32(
FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
/* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. *xmt_signal_frequency.countalreadysetto0. *xmt_signal_frequency.unitsalreadysetto0.
*/
if (phba->cmf_active_mode == LPFC_CFG_OFF) { /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. *rcv_signal_frequency.countalreadysetto0. *rcv_signal_frequency.unitsalreadysetto0.
*/
phba->cgn_sig_freq = 0; return;
} switch (phba->cgn_reg_signal) { case EDC_CG_SIG_WARN_ONLY:
cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY); break; case EDC_CG_SIG_WARN_ALARM:
cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM); break; default: /* rcv_signal_capability left 0 thus no support */ break;
}
/* We start negotiation with lpfc_fabric_cgn_frequency, after *thecompletionwesettleonthehigherfrequency.
*/
cgd->rcv_signal_frequency.count =
cpu_to_be16(lpfc_fabric_cgn_frequency);
cgd->rcv_signal_frequency.units =
cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
}
staticbool
lpfc_link_is_lds_capable(struct lpfc_hba *phba)
{ if (!(phba->lmt & LMT_64Gb)) returnfalse; if (phba->sli_rev != LPFC_SLI_REV4) returnfalse;
if (phba->sli4_hba.conf_trunk) { if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G) returntrue;
} elseif (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) { returntrue;
} returnfalse;
}
/* Configure the payload for the supported Diagnostics capabilities. */java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
_dmabuf->
memset(pcmd, 0, cmdsize);
edc_req = (struct fc_els_edc *)pcmd;
edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size);
>=ELS_EDC;
tlv =edc_req-desc;
if (cgn_desc_size) {
lpfc_format_edc_cgn_desc(phba*is inpageshift.
phba>gn_sig_freq=lpfc_fabric_cgn_frequency;
tlv = fc_tlv_next_desc(tlv)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
elsiocbrmb) /* Must/check ms_range_active before loading PTEs */
elsiocb=paddr&~(UL<ps -1; if (!elsiocb->ndlp) {
lpfc_els_free_iocb(phba, elsiocb); return -EIO;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue EDC: did:x%x refcnt %d",
ndlp(&ndlp->ref, );
rc = lpfc_sli_issue_iocb(phba gru_control_block_extended*cbe) if (if (fault_vaddr = cbe->be_baddr0) /* The additional lpfc_nlp_put will cause the followingfault_vaddr+GRU_CACHE_LINE_BYTES*cbe-cbe_src_cl-1; while(vaddr>fault_vaddr)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30 thenode.
*/
lpfc_els_free_iocb(phba, elsiocb);
lpfc_nlp_put(ndlp); struct *cbe= ;
/** *lpfc_cancel_retry_delay_tmo-Cancelthetimerwithdelayediocb-cmdretry *ret==VTOP_INVALID) *@ gts-t=1java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32 * *Thisroutinecancelsthetimerwith delayeddelayedIOCBcommandretryfor *areturn1; *removestheELSretryjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 16 gru_flush_cache(fh) *commandsareforthe@'snodesthatrequireissuingdiscovery *cbe);
**/ void
lpfc_cancel_retry_delay_tmo(imap, ;
{ struct lpfc_work_evt *evtp;
if (test_and_clear_bit(NLP_DELAY_TMO&lp>nlp_flag)) return;
timer_delete_sync(&nlp->nlp_delayfunc);
nlp->nlp_last_elscmd = 0; if (!list_empty(&nlp-java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 5
list_del_init(&nlp->els_retry_evt.evt_listp); /* Decrement nlp reference count held for the delayed retry */
tfh_user_polling_mode()java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
->evt_arg1);
} if } if (vport->num_disc_nodes) { if vport->port_state LPFC_VPORT_READY){ /* Check if there are more ADISCs to be sent */
lpfc_more_adisc(vport) (et< 0)
} else{ /* Check if there are more PLOGIs to be sent */
lpfc_more_plogi(vport); if (vport->java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 6 gotoexit;
an_disctmo(;
lpfc_end_rscn(vport);
}
}
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 return=gru_find_lock_gts(excdetcb)
}
/** *lpfc_els_retry_delay{ .,opc,excdetexopc,cbrstate,excdet.java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77 * static() *ispending(the.Ifnot,it *simplyreturns.spin_lock(&ru->gs_lock)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29 *addsthedelayedeventstotheHBAworklistandinvokesthe *lpfc_worker_wake_up()routinetowakeupworker=gru_find_lock_gts(req.gseg)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 *.lpfc_nlp_get()iscalledbeforepostingtheeventto *theworklisttoholdreferencecountofndlpsothatitguaranteesthe *referenceto gru_unlock_gts(gtsgru_unlock_gts(ts; *totheeventreturn-java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
**/ void gru_set_context_option( long return-FAULT
{
(val0 1| req.val0> GRU_CHIPLETS_PER_HUB ||
; struct lpfc_vport *vport = return ret struct lpfc_hba break; unsignedlong ; struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
/* Hold a node reference for outstanding queued work */ if (!lpfc_nlp_get(ndlp)) return;
spin_lock_irqsave(&phba->hbalock, flags); if (!list_empty(&evtp->evt_listp)) {
spin_unlock_irqrestore(&phba->hbalock, flags);
lpfc_nlp_put(ndlp); return;
}
if (ndlp)
did = ndlp->nlp_DID; else { /* We should only hit this case for retrying PLOGI */
did = get_job_els_rsp64_did(phba, rspiocb);
ndlp = lpfc_findnode_did(vport, did); if (!ndlp && (cmd != ELS_CMD_PLOGI)) return0;
}
case LSRJT_PROTOCOL_ERR: if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(cmd == ELS_CMD_FDISC) &&
((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
(stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
) {
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0122 FDISC (x%x). " "Fabric Detected Bad WWN\n",
stat.un.lsRjtError);
lpfc_vport_set_state(vport,
FC_VPORT_FABRIC_REJ_WWN);
} break; case LSRJT_VENDOR_UNIQUE: if ((stat.un.b.vendorUnique == 0x45) &&
(cmd == ELS_CMD_FLOGI)) { goto out_retry;
} break; case LSRJT_CMD_UNSUPPORTED: /* lpfc nvmet returns this type of LS_RJT when it *receivesanFCPPRLIbecauselpfcnvmetonly *supportNVME.ELSrequestisterminatedforFCP4 *onthisrport.
*/ if (stat.un.b.lsRjtRsnCodeExp ==
LSEXP_REQ_UNSUPPORTED) { if (cmd == ELS_CMD_PRLI) goto out_retry;
} break;
} break;
case IOSTAT_INTERMED_RSP: case IOSTAT_BA_RJT: break;
default: break;
}
if (link_reset) {
rc = lpfc_link_reset(vport); if (rc) { /* Do not give up. Retry PLOGI one more time and attempt *linkresetifPLOGIfailsagain.
*/
retry = 1;
delay = 100; goto out_retry;
} return1;
}
if (test_bit(FC_UNLOADING, &vport->load_flag))
retry = 0;
out_retry: if (retry) { if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { /* Stop retrying PLOGI and FDISC if in FCF discovery */ if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2849 Stop retry ELS command " "x%x to remote NPORT x%x, " "Data: x%x x%x\n", cmd, did,
cmdiocb->retry, delay); return0;
}
}
/* Retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0107 Retry ELS command x%x to remote " "NPORT x%x Data: x%x x%x\n",
cmd, did, cmdiocb->retry, delay);
if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
((ulp_status != IOSTAT_LOCAL_REJECT) ||
((ulp_word4 & IOERR_PARAM_MASK) !=
IOERR_NO_RESOURCES))) { /* Don't reset timer for no resources */
/* If discovery / RSCN timer is running, reset it */ if (timer_pending(&vport->fc_disctmo) ||
test_bit(FC_RSCN_MODE, &vport->fc_flag))
lpfc_set_disctmo(vport);
}
phba->fc_stat.elsXmitRetry++; if (ndlp && delay) {
phba->fc_stat.elsDelayRetry++;
ndlp->nlp_retry = cmdiocb->retry;
/* delay is specified in milliseconds */
mod_timer(&ndlp->nlp_delayfunc,
jiffies + msecs_to_jiffies(delay));
set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ACC LOGO cmpl: status:x%x/x%x did:x%x",
ulp_status, ulp_word4, ndlp->nlp_DID); /* ACC to LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0109 ACC to LOGO completes to NPort x%x refcnt %d " "last els x%x Data: x%lx x%x x%x\n",
ndlp->nlp_DID, kref_read(&ndlp->kref),
ndlp->nlp_last_elscmd, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
/* This clause allows the LOGO ACC to complete and free resources *fortheFabricDomainController.Itdoesdeliberatelyskip *theunreg_rpiandreleaserpibecausesomefabricssendRDP *requestsafterloggingoutfromtheinitiator.
*/ if (ndlp->nlp_type & NLP_FABRIC &&
((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) goto out;
if (ndlp->nlp_state == NLP_STE_NPR_NODE) { if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag))
lpfc_unreg_rpi(vport, ndlp);
/* If came from PRLO, then PRLO_ACC is done. *Startrediscoverynow.
*/ if (ndlp->nlp_last_elscmd == ELS_CMD_PRLO) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
}
}
if (!vport) {
lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "3177 null vport in ELS rsp\n"); goto out;
} if (cmdiocb->context_un.mbox)
mbox = cmdiocb->context_un.mbox;
/* Check to see if link went down during discovery */ if (!ndlp || lpfc_els_chk_latt(vport)) { if (mbox)
lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); goto out;
}
/* Increment reference count to ndlp to hold the *referencetondlpforthecallbackfunction.
*/
mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) goto out_free_mbox;
/* An SLI4 NPIV instance wants to drop the node at this point under *theseconditionsbecauseitdoesn'tneedthelogin.
*/ if (phba->sli_rev == LPFC_SLI_REV4 &&
vport && vport->port_type == LPFC_NPIV_PORT &&
!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { /* Drop ndlp if there is no planned or outstanding *issuedPRLI. * *Incaseswhenthendlpisactingasbothaninitiator *andtargetfunction,letourissuedPRLIdetermine *thefinalndlpkrefdrop.
*/
lpfc_drop_node(vport, ndlp);
}
}
/* Release the originating I/O reference. */
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
}
/**
* lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
* @vport: pointer to a virtual N_Port data structure.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine prepares and issues an Accept (ACC) response to Address
* Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
* and invokes the lpfc_sli_issue_iocb() routine to send out the command.
*
* Note that the ndlp reference count will be incremented by 1 for holding the
* ndlp and the reference to ndlp will be stored into the ndlp field of
* the IOCB for the completion callback function to the ADISC Accept response
* ELS IOCB command.
*
* Return code
* 0 - Successfully issued acc adisc response
* 1 - Failed to issue adisc acc response
* int
cs lpfc_vport *vport,structlpfc_iocbq*, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba;
ADISC *ap;
IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int rc;
u32 ulp_context;
/* Need the incoming PRLI payload to determine if the ACC is for an *FC4orNVMEPRLItype.ThePRLItypeisatword1.
*/
req_buf = oldiocb->cmd_dmabuf;
req_payload = (((uint32_t *)req_buf->virt) + 1);
/* PRLI type payload is at byte 3 for FCP or NVME. */
prli_fc4_req = be32_to_cpu(*req_payload);
prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
prli_fc4_req, *((uint32_t *)req_payload));
/* The accumulated length can exceed the BPL_SIZE. For
* now, use this as the limit
*/
if (cmdsize > LPFC_BPL_SIZE)
cmdsize = LPFC_BPL_SIZE;
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC);
if (!elsiocb)
return 1;
/**
* lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues Address Discover (ADISC) ELS commands to those
* N_Ports which are in node port recovery state and ADISC has not been issued
* for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
* lpfc_issue_els_adisc() routine, the per @vport number of discover count
* (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
* pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
* be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
* IOCBs quit for later pick up. On the other hand, after walking through
* all the ndlps with the @vport and there is none ADISC IOCB issued, the
* @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
* no more ADISC need to be sent.
*
* Return code
* The number of N_Ports with adisc issued.
**/
int
lpfc_els_disc_adisc(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
int sentadisc = 0;
/* go thru NPR nodes and issue any remaining ELS ADISCs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag))
continue;
clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
if (!test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag)) {
/* This node was marked for ADISC but was not picked
* for discovery. This is possible if the node was
* missing in gidft response.
*
* At time of marking node for ADISC, we skipped unreg
* from backend
*/
lpfc_nlp_unreg_node(vport, ndlp);
lpfc_unreg_rpi(vport, ndlp);
continue;
}
}
if (sentadisc == 0)
clear_bit(FC_NLP_MORE, &vport->fc_flag);
return sentadisc;
}
/**
* lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
* which are in node port recovery state, with a @vport. Each time an ELS
* ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
* the per @vport number of discover count (num_disc_nodes) shall be
* incremented. If the num_disc_nodes reaches a pre-configured threshold
* (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
* bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
* later pick up. On the other hand, after walking through all the ndlps with
* the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
* shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
* PLOGI need to be sent.
*
* Return code
* The number of N_Ports with plogi issued.
**/
int
lpfc_els_disc_plogi(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
int sentplogi = 0;
/* go thru NPR nodes and issue any remaining ELS PLOGIs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag) &&
!test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag) &&
!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
sentplogi++;
vport->num_disc_nodes++;
if (vport->num_disc_nodes >=
vport->cfg_discovery_threads) {
set_bit(FC_NLP_MORE, &vport->fc_flag);
break;
}
}
}
desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
if (test_bit(FC_FABRIC, &vport->fc_flag)) {
memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
sizeof(desc->port_names.wwnn));
memcpy(desc->port_names.wwpn, &vport->fabric_portname,
sizeof(desc->port_names.wwpn));
} else { /* Point to Point */
memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
sizeof(desc->port_names.wwnn));
/* Now that we know the true size of the payload, update the BPL */
bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
bpl->tus.f.bdeSize = len;
bpl->tus.f.bdeFlags = 0;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
free_rdp_context:
/* This reference put is for the original unsolicited RDP. If the
* prep failed, there is no reference to remove.
*/
lpfc_nlp_put(ndlp);
kfree(rdp_context);
}
static int
lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
{
LPFC_MBOXQ_t *mbox = NULL;
int rc;
/*
* lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited RDP(Read Diagnostic Parameters)
* IOCB. First, the payload of the unsolicited RDP is checked.
* Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
* for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
* (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
* gather all data and send RDP response.
*
* Return code
* 0 - Sent the acc response
* 1 - Sent the reject response.
*/
static int
lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
struct fc_rdp_req_frame *rdp_req;
struct lpfc_rdp_context *rdp_context;
union lpfc_wqe128 *cmd = NULL;
struct ls_rjt stat;
/**
* lpfc_els_rcv_lcb - Process an unsolicited LCB
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
* First, the payload of the unsolicited LCB is checked.
* Then based on Subcommand beacon will either turn on or off.
*
* Return code
* 0 - Sent the acc response
* 1 - Sent the reject response.
**/
static int
lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint8_t *lp;
struct fc_lcb_request_frame *beacon;
struct lpfc_lcb_context *lcb_context;
u8 state, rjt_err = 0;
struct ls_rjt stat;
/**
* lpfc_els_flush_rscn - Clean up any rscn activities with a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine cleans up any Registration State Change Notification
* (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
* @vport together with the host_lock is used to prevent multiple thread
* trying to access the RSCN array on a same @vport at the same time.
**/
void
lpfc_els_flush_rscn(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
int i;
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
return;
}
/* Indicate we are walking lpfc_els_flush_rscn on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
vport->fc_rscn_id_list[i] = NULL;
}
clear_bit(FC_RSCN_MODE, &vport->fc_flag);
clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
spin_lock_irq(shost->host_lock);
vport->fc_rscn_id_cnt = 0;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
/* Indicate we are done walking this fc_rscn_id_list */
vport->fc_rscn_flush = 0;
}
/**
* lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
* @vport: pointer to a host virtual N_Port data structure.
* @did: remote destination port identifier.
*
* This routine checks whether there is any pending Registration State
* Configuration Notification (RSCN) to a @did on @vport.
*
* Return code
* None zero - The @did matched with a pending rscn
* 0 - not able to match @did with a pending rscn
**/
int
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
{
D_ID ns_did;
D_ID rscn_did;
uint32_t *lp;
uint32_t payload_len, i;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
ns_did.un.word = did;
/* 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 (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
return did;
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
return 0;
}
/* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lp = vport->fc_rscn_id_list[i]->virt;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */
while (payload_len) {
rscn_did.un.word = be32_to_cpu(*lp++);
payload_len -= sizeof(uint32_t);
switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
case RSCN_ADDRESS_FORMAT_PORT:
if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area)
&& (ns_did.un.b.id == rscn_did.un.b.id))
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_AREA:
if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area))
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_DOMAIN:
if (ns_did.un.b.domain == rscn_did.un.b.domain)
goto return_did_out;
break;
case RSCN_ADDRESS_FORMAT_FABRIC:
goto return_did_out;
}
}
}
/* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
return 0;
return_did_out:
/* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
return did;
}
/**
* lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
* state machine for a @vport's nodes that are with pending RSCN (Registration
* State Change Notification).
*
* Return code
* 0 - Successful (currently alway return 0)
**/
static int
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp = NULL, *n;
/* Move all affected nodes by pending RSCNs to NPR state. */
list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
if (test_bit(FC_UNLOADING, &vport->load_flag)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"1000 %s Unloading set\n",
__func__);
return 0;
}
if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
!lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
continue;
/* NVME Target mode does not do RSCN Recovery. */
if (vport->phba->nvmet_support)
continue;
/* If we are in the process of doing discovery on this
* NPort, let it continue on its own.
*/
switch (ndlp->nlp_state) {
case NLP_STE_PLOGI_ISSUE:
case NLP_STE_ADISC_ISSUE:
case NLP_STE_REG_LOGIN_ISSUE:
case NLP_STE_PRLI_ISSUE:
case NLP_STE_LOGO_ISSUE:
continue;
}
/**
* lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes an unsolicited RSCN (Registration State Change
* Notification) IOCB. First, the payload of the unsolicited RSCN is walked
* to invoke fc_host_post_event() routine to the FC transport layer. If the
* discover state machine is about to begin discovery, it just accepts the
* RSCN and the discovery process will satisfy the RSCN. If this RSCN only
* contains N_Port IDs for other vports on this HBA, it just accepts the
* RSCN and ignore processing it. If the state machine is in the recovery
* state, the fc_rscn_id_list of this @vport is walked and the
* lpfc_rscn_recovery_check() routine is invoked to send recovery event for
* all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
* routine is invoked to handle the RSCN event.
*
* Return code
* 0 - Just sent the acc response
* 1 - Sent the acc response and waited for name server completion
**/
static int
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint32_t *lp, *datap;
uint32_t payload_len, length, nportid, *cmd;
int rscn_cnt;
int rscn_id = 0, hba_id = 0;
int i, tmo;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */
/* RSCN received */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0214 RSCN received Data: x%lx x%x x%x x%x\n",
vport->fc_flag, payload_len, *lp,
vport->fc_rscn_id_cnt);
/* Send an RSCN event to the management application */
lpfc_send_rscn_event(vport, cmdiocb);
for (i = 0; i < payload_len/sizeof(uint32_t); i++)
fc_host_post_event(shost, fc_get_event_number(),
FCH_EVT_RSCN, lp[i]);
/* Check if RSCN is coming from a direct-connected remote NPort */
if (test_bit(FC_PT2PT, &vport->fc_flag)) {
/* If so, just ACC it, no other action needed for now */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"2024 pt2pt RSCN %08x Data: x%lx x%x\n",
*lp, vport->fc_flag, payload_len);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* Check to see if we need to NVME rescan this target
* remoteport.
*/
if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
lpfc_nvme_rescan_port(vport, ndlp);
return 0;
}
/* If we are about to begin discovery, just ACC the RSCN.
* Discovery processing will satisfy it.
*/
if (vport->port_state <= LPFC_NS_QRY) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN ignore: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
/* If this RSCN just contains NPortIDs for other vports on this HBA,
* just ACC and ignore it.
*/
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!(vport->cfg_peer_port_login)) {
i = payload_len;
datap = lp;
while (i > 0) {
nportid = *datap++;
nportid = ((be32_to_cpu(nportid)) & Mask_DID);
i -= sizeof(uint32_t);
rscn_id++;
if (lpfc_find_vport_by_did(phba, nportid))
hba_id++;
}
if (rscn_id == hba_id) {
/* ALL NPortIDs in RSCN are on HBA */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0219 Ignore RSCN "
"Data: x%lx x%x x%x x%x\n",
vport->fc_flag, payload_len,
*lp, vport->fc_rscn_id_cnt);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN vport: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state,
ndlp->nlp_flag);
spin_lock_irq(shost->host_lock);
if (vport->fc_rscn_flush) {
/* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
/* Get the array count after successfully have the token */
rscn_cnt = vport->fc_rscn_id_cnt;
/* If we are already processing an RSCN, save the received
* RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
*/
if (test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN defer: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
set_bit(FC_RSCN_DEFERRED, &vport->fc_flag);
/* Restart disctmo if its already running */
if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
tmo = ((phba->fc_ratov * 3) + 3);
mod_timer(&vport->fc_disctmo,
jiffies + secs_to_jiffies(tmo));
}
if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
!test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
set_bit(FC_RSCN_MODE, &vport->fc_flag);
if (rscn_cnt) {
cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
}
if ((rscn_cnt) &&
(payload_len + length <= LPFC_BPL_SIZE)) {
*cmd &= ELS_CMD_MASK;
*cmd |= cpu_to_be32(payload_len + length);
memcpy(((uint8_t *)cmd) + length, lp,
payload_len);
} else {
vport->fc_rscn_id_list[rscn_cnt] = pcmd;
vport->fc_rscn_id_cnt++;
/* If we zero, cmdiocb->cmd_dmabuf, the calling
* routine will not try to free it.
*/
cmdiocb->cmd_dmabuf = NULL;
}
/* Deferred RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0235 Deferred RSCN "
"Data: x%x x%lx x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
} else {
set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
/* ReDiscovery RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0234 ReDiscovery RSCN "
"Data: x%x x%lx x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
}
/* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport);
return 0;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV RSCN: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
set_bit(FC_RSCN_MODE, &vport->fc_flag);
vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
/* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0;
/*
* If we zero, cmdiocb->cmd_dmabuf, the calling routine will
* not try to free it.
*/
cmdiocb->cmd_dmabuf = NULL;
lpfc_set_disctmo(vport);
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport);
return lpfc_els_handle_rscn(vport);
}
/**
* lpfc_els_handle_rscn - Handle rscn for a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine handles the Registration State Configuration Notification
* (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
* be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
* if the ndlp to NameServer exists, a Common Transport (CT) command to the
* NameServer shall be issued. If CT command to the NameServer fails to be
* issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
* RSCN activities with the @vport.
*
* Return code
* 0 - Cleaned up rscn on the @vport
* 1 - Wait for plogi to name server before proceed
**/
int
lpfc_els_handle_rscn(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp;
struct lpfc_hba *phba = vport->phba;
/* Ignore RSCN if the port is being torn down. */
if (test_bit(FC_UNLOADING, &vport->load_flag)) {
lpfc_els_flush_rscn(vport);
return 0;
}
/* Start timer for RSCN processing */
lpfc_set_disctmo(vport);
/* To process RSCN, first compare RSCN data with NameServer */
vport->fc_ns_retry = 0;
vport->num_disc_nodes = 0;
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
/* Good ndlp, issue CT Request to NameServer. Need to
* know how many gidfts were issued. If none, then just
* flush the RSCN. Otherwise, the outstanding requests
* need to complete.
*/
if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
if (lpfc_issue_gidft(vport) > 0)
return 1;
} else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
if (lpfc_issue_gidpt(vport) > 0)
return 1;
} else {
return 1;
}
} else {
/* Nameserver login in question. Revalidate. */
if (ndlp) {
ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
} else {
ndlp = lpfc_nlp_init(vport, NameServer_DID);
if (!ndlp) {
lpfc_els_flush_rscn(vport);
return 0;
}
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
}
ndlp->nlp_type |= NLP_FABRIC;
lpfc_issue_els_plogi(vport, NameServer_DID, 0);
/* Wait for NameServer login cmpl before we can
* continue
*/
return 1;
}
lpfc_els_flush_rscn(vport);
return 0;
}
/**
* lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fabric Login (FLOGI) IOCB received as an ELS
* unsolicited event. An unsolicited FLOGI can be received in a point-to-
* point topology. As an unsolicited FLOGI should not be received in a loop
* mode, any unsolicited FLOGI received in loop mode shall be ignored. The
* lpfc_check_sparm() routine is invoked to check the parameters in the
* unsolicited FLOGI. If parameters validation failed, the routine
* lpfc_els_rsp_reject() shall be called with reject reason code set to
* LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
* FLOGI shall be compared with the Port WWN of the @vport to determine who
* will initiate PLOGI. The higher lexicographical value party shall has
* higher priority (as the winning port) and will initiate PLOGI and
* communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
* of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
* and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
*
* Return code
* 0 - Successfully processed the unsolicited flogi
* 1 - Failed to process the unsolicited flogi
**/
static int
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
uint32_t *lp = (uint32_t *) pcmd->virt;
union lpfc_wqe128 *wqe = &cmdiocb->wqe;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
uint32_t cmd, did;
int rc;
unsigned long fc_flag = 0;
uint32_t port_state = 0;
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
/* We should never receive a FLOGI in loop mode, ignore it */
did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
/* An FLOGI ELS command <elsCmd> was received from DID <did> in
Loop Mode */
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"0113 An FLOGI ELS command x%x was "
"received from DID x%x in Loop Mode\n",
cmd, did);
return 1;
}
/* abort the flogi coming back to ourselves
* due to external loopback on the port.
*/
lpfc_els_abort_flogi(phba);
return 0;
} else if (rc > 0) { /* greater than */
set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
/* If we have the high WWPN we can assign our own
* myDID; otherwise, we have to WAIT for a PLOGI
* from the remote NPort to find out what it
* will be.
*/
vport->fc_myDID = PT2PT_LocalID;
} else {
vport->fc_myDID = PT2PT_RemoteID;
}
/*
* The vport state should go to LPFC_FLOGI only
* AFTER we issue a FLOGI, not receive one.
*/
spin_lock_irq(shost->host_lock);
fc_flag = vport->fc_flag;
port_state = vport->port_state;
/* Acking an unsol FLOGI. Count 1 for link bounce
* work-around.
*/
vport->rcv_flogi_cnt++;
spin_unlock_irq(shost->host_lock);
set_bit(FC_PT2PT, &vport->fc_flag);
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3311 Rcv Flogi PS x%x new PS x%x "
"fc_flag x%lx new fc_flag x%lx, hba_flag x%lx\n",
port_state, vport->port_state,
fc_flag, vport->fc_flag, phba->hba_flag);
/*
* We temporarily set fc_myDID to make it look like we are
* a Fabric. This is done just so we end up with the right
* did / sid on the FLOGI ACC rsp.
*/
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
/* Defer ACC response until AFTER we issue a FLOGI */
if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) {
phba->defer_flogi_acc.rx_id = bf_get(wqe_ctxt_tag,
&wqe->xmit_els_rsp.wqe_com);
phba->defer_flogi_acc.ox_id = bf_get(wqe_rcvoxid,
&wqe->xmit_els_rsp.wqe_com);
/* This nlp_get is paired with nlp_puts that reset the
* defer_flogi_acc.flag back to false. We need to retain
* a kref on the ndlp until the deferred FLOGI ACC is
* processed or cancelled.
*/
phba->defer_flogi_acc.ndlp = lpfc_nlp_get(ndlp);
return 0;
}
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
/* Now lets put fc_myDID back to what its supposed to be */
vport->fc_myDID = did;
return 0;
}
/**
* lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Request Node Identification Data (RNID) IOCB
* received as an ELS unsolicited event. Only when the RNID specified format
* 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
* present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
* Accept (ACC) the RNID ELS command. All the other RNID formats are
* rejected by invoking the lpfc_els_rsp_reject() routine.
*
* Return code
* 0 - Successfully processed rnid iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
RNID *rn;
struct ls_rjt stat;
/**
* lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes a Link Incident Report Registration(LIRR) IOCB
* received as an ELS unsolicited event. Currently, this function just invokes
* the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
*
* Return code
* 0 - Successfully processed lirr iocb (currently always return 0)
**/
static int
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct ls_rjt stat;
/**
* lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
* received as an ELS unsolicited event. A request to RRQ shall only
* be accepted if the Originator Nx_Port N_Port_ID or the Responder
* Nx_Port N_Port_ID of the target Exchange is the same as the
* N_Port_ID of the Nx_Port that makes the request. If the RRQ is
* not accepted, an LS_RJT with reason code "Unable to perform
* command request" and reason code explanation "Invalid Originator
* S_ID" shall be returned. For now, we just unconditionally accept
* RRQ from the target.
**/
static void
lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
if (vport->phba->sli_rev == LPFC_SLI_REV4)
lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
}
/**
* lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function for the MBX_READ_LNK_STAT
* mailbox command. This callback function is to actually send the Accept
* (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
* collects the link statistics from the completion of the MBX_READ_LNK_STAT
* mailbox command, constructs the RLS response with the link statistics
* collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
* response to the RLS.
*
* Note that the ndlp reference count will be incremented by 1 for holding the
* ndlp and the reference to ndlp will be stored into the ndlp field of
* the IOCB for the completion callback function to the RLS Accept Response
* ELS IOCB command.
*
**/
static void
lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
int rc = 0;
MAILBOX_t *mb;
IOCB_t *icmd;
union lpfc_wqe128 *wqe;
struct RLS_RSP *rls_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
struct lpfc_nodelist *ndlp;
uint16_t oxid;
uint16_t rxid;
uint32_t cmdsize;
u32 ulp_context;
/**
* lpfc_els_rcv_rls - Process an unsolicited rls iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Link Status (RLS) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsl_reject() routine to send the reject
* response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
* for reading the HBA link statistics. It is for the callback function,
* lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
* to actually sending out RPL Accept (ACC) response.
*
* Return codes
* 0 - Successfully processed rls iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
u32 ctx = get_job_ulpcontext(phba, cmdiocb);
u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RLS request and done with it */
goto reject_out;
/**
* lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Timout Value (RTV) IOCB received as an
* ELS unsolicited event. It first checks the remote port state. If the
* remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
* state, it invokes the lpfc_els_rsl_reject() routine to send the reject
* response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
* Value (RTV) unsolicited IOCB event.
*
* Note that the ndlp reference count will be incremented by 1 for holding the
* ndlp and the reference to ndlp will be stored into the ndlp field of
* the IOCB for the completion callback function to the RTV Accept Response
* ELS IOCB command.
*
* Return codes
* 0 - Successfully processed rtv iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
int rc = 0;
IOCB_t *icmd;
union lpfc_wqe128 *wqe;
struct lpfc_hba *phba = vport->phba;
struct ls_rjt stat;
struct RTV_RSP *rtv_rsp;
uint8_t *pcmd;
struct lpfc_iocbq *elsiocb;
uint32_t cmdsize;
u32 ulp_context;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE))
/* reject the unsolicited RTV request and done with it */
goto reject_out;
/* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
* @did: DID of the target.
* @rrq: Pointer to the rrq struct.
*
* Build a ELS RRQ command and send it to the target. If the issue_iocb is
* successful, the completion handler will clear the RRQ.
*
* Return codes
* 0 - Successfully sent rrq els iocb.
* 1 - Failed to send rrq els iocb.
**/
static int
lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did, struct lpfc_node_rrq *rrq)
{
struct lpfc_hba *phba = vport->phba;
struct RRQ *els_rrq;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
int ret;
if (!ndlp)
return 1;
/* If ndlp is not NULL, we will bump the reference count on it */
cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
ELS_CMD_RRQ);
if (!elsiocb)
return 1;
pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
/* For RRQ request, remainder of payload is Exchange IDs */
*((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
pcmd += sizeof(uint32_t);
els_rrq = (struct RRQ *) pcmd;
/**
* lpfc_send_rrq - Sends ELS RRQ if needed.
* @phba: pointer to lpfc hba data structure.
* @rrq: pointer to the active rrq.
*
* This routine will call the lpfc_issue_els_rrq if the rrq is
* still active for the xri. If this function returns a failure then
* the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
*
* Returns 0 Success.
* 1 Failure.
**/
int
lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
{
struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
rrq->nlp_DID);
if (!ndlp)
return 1;
/**
* lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
* @vport: pointer to a host virtual N_Port data structure.
* @cmdsize: size of the ELS command.
* @oldiocb: pointer to the original lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
* It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
*
* Note that the ndlp reference count will be incremented by 1 for holding the
* ndlp and the reference to ndlp will be stored into the ndlp field of
* the IOCB for the completion callback function to the RPL Accept Response
* ELS command.
*
* Return code
* 0 - Successfully issued ACC RPL ELS command
* 1 - Failed to issue ACC RPL ELS command
**/
static int
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
int rc = 0;
struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
union lpfc_wqe128 *wqe;
RPL_RSP rpl_rsp;
struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
u32 ulp_context;
/**
* lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Read Port List (RPL) IOCB received as an ELS
* unsolicited event. It first checks the remote port state. If the remote
* port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
* invokes the lpfc_els_rsp_reject() routine to send reject response.
* Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
* to accept the RPL.
*
* Return code
* 0 - Successfully processed rpl iocb (currently always return 0)
**/
static int
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
uint32_t maxsize;
uint16_t cmdsize;
RPL *rpl;
struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
/* issue rejection response */
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(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
/* rejected the unsolicited RPL request and done with it */
return 0;
}
/* We support only one port */
if ((rpl->index == 0) &&
((maxsize == 0) ||
((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
} else {
cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
}
lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
return 0;
}
/**
* lpfc_els_rcv_farp - Process an unsolicited farp request els command
* @vport: pointer to a virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fibre Channel Address Resolution Protocol
* (FARP) Request IOCB received as an ELS unsolicited event. Currently,
* the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
* FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
* Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
* remote PortName is compared against the FC PortName stored in the @vport
* data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
* compared against the FC NodeName stored in the @vport data structure.
* If any of these matches and the FARP_REQUEST_FARPR flag is set in the
* FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
* invoked to send out FARP Response to the remote node. Before sending the
* FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
* request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
* routine is invoked to log into the remote port first.
*
* Return code
* 0 - Either the FARP Match Mode not supported or successfully processed
**/
static int
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
FARP *fp;
uint32_t cnt, did;
lp++;
fp = (FARP *) lp;
/* FARP-REQ received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0601 FARP-REQ received from DID x%x\n", 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, &vport->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, &vport->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_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
}
/* Send a FARP response to that node */
if (fp->Rflags & FARP_REQUEST_FARPR)
lpfc_issue_els_farpr(vport, did, 0);
}
}
return 0;
}
/**
* lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine processes Fibre Channel Address Resolution Protocol
* Response (FARPR) IOCB received as an ELS unsolicited event. It simply
* invokes the lpfc_els_rsp_acc() routine to the remote node to accept
* the FARP response request.
*
* Return code
* 0 - Successfully processed FARPR IOCB (currently always return 0)
**/
static int
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
uint32_t did;
did = get_job_els_rsp64_did(vport->phba, cmdiocb);
/* FARP-RSP received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0600 FARP-RSP received from DID x%x\n", did);
/* ACCEPT the Farp resp request */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/**
* lpfc_els_rcv_fan - Process an unsolicited fan iocb command
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @fan_ndlp: pointer to a node-list data structure.
*
* This routine processes a Fabric Address Notification (FAN) IOCB
* command received as an ELS unsolicited event. The FAN ELS command will
* only be processed on a physical port (i.e., the @vport represents the
* physical port). The fabric NodeName and PortName from the FAN IOCB are
* compared against those in the phba data structure. If any of those is
* different, the lpfc_initial_flogi() routine is invoked to initialize
* Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
* if both of those are identical, the lpfc_issue_fabric_reglogin() routine
* is invoked to register login to the fabric.
*
* Return code
* 0 - Successfully processed fan iocb (currently always return 0).
**/
static int
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *fan_ndlp)
{
struct lpfc_hba *phba = vport->phba;
uint32_t *lp;
FAN *fp;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
fp = (FAN *) ++lp;
/* FAN received; Fan does not have a reply sequence */
if ((vport == phba->pport) &&
(vport->port_state == LPFC_LOCAL_CFG_LINK)) {
if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
sizeof(struct lpfc_name))) ||
(memcmp(&phba->fc_fabparam.portName, &fp->FportName,
sizeof(struct lpfc_name)))) {
/* This port has switched fabrics. FLOGI is required */
lpfc_issue_init_vfi(vport);
} else {
/* FAN verified - skip FLOGI */
vport->fc_myDID = vport->fc_prevDID;
if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport);
else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3138 Need register VFI: (x%x/%x)\n",
vport->fc_prevDID, vport->fc_myDID);
lpfc_issue_reg_vfi(vport);
}
}
}
return 0;
}
/**
* lpfc_els_rcv_edc - Process an unsolicited EDC iocb
* @vport: pointer to a host virtual N_Port data structure.
* @cmdiocb: pointer to lpfc command iocb data structure.
* @ndlp: pointer to a node-list data structure.
*
* Return code
* 0 - Successfully processed echo iocb (currently always return 0)
**/
static int
lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct fc_els_edc *edc_req;
struct fc_tlv_desc *tlv;
uint8_t *payload;
uint32_t *ptr, dtag;
const char *dtag_nm;
int desc_cnt = 0, bytes_remain;
struct fc_diag_lnkflt_desc *plnkflt;
/* No signal support unless there is a congestion descriptor */
phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
phba->cgn_sig_freq = 0;
phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
if (bytes_remain <= 0)
goto out;
tlv = edc_req->desc;
/*
* cycle through EDC diagnostic descriptors to find the
* congestion signaling capability descriptor
*/
while (bytes_remain) {
if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
lpfc_printf_log(phba, KERN_WARNING,
LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
"6464 Truncated TLV hdr on "
"Diagnostic descriptor[%d]\n",
desc_cnt);
goto out;
}
/* We start negotiation with lpfc_fabric_cgn_frequency.
* When we process the EDC, we will settle on the
* higher frequency.
*/
phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
lpfc_least_capable_settings(
phba, (struct fc_diag_cg_sig_desc *)tlv);
break;
default:
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING,
LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
"6467 unknown Diagnostic "
"Descriptor[%d]: tag x%x (%s)\n",
desc_cnt, dtag, dtag_nm);
}
bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
tlv = fc_tlv_next_desc(tlv);
desc_cnt++;
}
out:
/* Need to send back an ACC */
lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
lpfc_config_cgn_signal(phba);
return 0;
}
/**
* lpfc_els_timeout - Handler funciton to the els timer
* @t: timer context used to obtain the vport.
*
* This routine is invoked by the ELS timer after timeout. It posts the ELS
* timer timeout event by setting the WORKER_ELS_TMO bit to the work port
* event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
* up the worker thread. It is for the worker thread to invoke the routine
* lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
**/
void
lpfc_els_timeout(struct timer_list *t)
{
struct lpfc_vport *vport = timer_container_of(vport, t, els_tmofunc);
struct lpfc_hba *phba = vport->phba;
uint32_t tmo_posted;
unsigned long iflag;
if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_els_timeout_handler - Process an els timeout event
* @vport: pointer to a virtual N_Port data structure.
*
* This routine is the actual handler function that processes an ELS timeout
* event. It walks the ELS ring to get and abort all the IOCBs (except the
* ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
* invoking the lpfc_sli_issue_abort_iotag() routine.
**/
void
lpfc_els_timeout_handler(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL;
struct lpfc_dmabuf *pcmd;
uint32_t els_command = 0;
uint32_t timeout;
uint32_t remote_ID = 0xffffffff;
LIST_HEAD(abort_list);
u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
timeout = (uint32_t)(phba->fc_ratov << 1);
pring = lpfc_phba_elsring(phba);
if (unlikely(!pring))
return;
if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
return;
spin_lock_irq(&phba->hbalock);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
/* Make sure HBA is alive */
lpfc_issue_hb_tmo(phba);
if (!list_empty(&pring->txcmplq))
if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
mod_timer(&vport->els_tmofunc,
jiffies + secs_to_jiffies(timeout));
}
/**
* lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
* @vport: pointer to a host virtual N_Port data structure.
*
* This routine is used to clean up all the outstanding ELS commands on a
* @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
* routine. After that, it walks the ELS transmit queue to remove all the
* IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
* the IOCBs with a non-NULL completion callback function, the callback
* function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
* un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
* callback function, the IOCB will simply be released. Finally, it walks
* the ELS transmit completion queue to issue an abort IOCB to any transmit
* completion queue IOCB that is associated with the @vport and is not
* an IOCB from libdfc (i.e., the management plane IOCBs that are not
* part of the discovery state machine) out to HBA by invoking the
* lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
* abort IOCB to any transmit completion queueed IOCB, it does not guarantee
* the IOCBs are aborted when this function returns.
**/
void
lpfc_els_flush_cmd(struct lpfc_vport *vport)
{
LIST_HEAD(abort_list);
LIST_HEAD(cancel_list);
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *tmp_iocb, *piocb;
u32 ulp_command;
unsigned long iflags = 0;
bool mbx_tmo_err;
lpfc_fabric_abort_vport(vport);
/*
* For SLI3, only the hbalock is required. But SLI4 needs to coordinate
* with the ring insert operation. Because lpfc_sli_issue_abort_iotag
* ultimately grabs the ring_lock, the driver must splice the list into
* a working list and release the locks before calling the abort.
*/
spin_lock_irqsave(&phba->hbalock, iflags);
pring = lpfc_phba_elsring(phba);
/* Bail out if we've no ELS wq, like in PCI error recovery case. */
if (unlikely(!pring)) {
spin_unlock_irqrestore(&phba->hbalock, iflags);
return;
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags);
/* First we need to issue aborts to outstanding cmds on txcmpl */
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
if (piocb->vport != vport)
continue;
if ((phba->sli.sli_flag & LPFC_SLI_ACTIVE) && !mbx_tmo_err) {
if (piocb->cmd_flag & LPFC_IO_LIBDFC)
continue;
if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
continue;
}
/* On the ELS ring we can have ELS_REQUESTs, ELS_RSPs,
* or GEN_REQUESTs waiting for a CQE response.
*/
ulp_command = get_job_cmnd(phba, piocb);
if (ulp_command == CMD_ELS_REQUEST64_WQE ||
ulp_command == CMD_XMIT_ELS_RSP64_WQE) {
list_add_tail(&piocb->dlist, &abort_list);
/* If the link is down when flushing ELS commands
* the firmware will not complete them till after
* the link comes back up. This may confuse
* discovery for the new link up, so we need to
* change the compl routine to just clean up the iocb
* and avoid any retry logic.
*/
if (phba->link_state == LPFC_LINK_DOWN)
piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
} else if (ulp_command == CMD_GEN_REQUEST64_CR ||
mbx_tmo_err)
list_add_tail(&piocb->dlist, &abort_list);
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Abort each txcmpl iocb on aborted list and remove the dlist links. */
list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
spin_lock_irqsave(&phba->hbalock, iflags);
list_del_init(&piocb->dlist);
if (mbx_tmo_err || !(phba->sli.sli_flag & LPFC_SLI_ACTIVE))
list_move_tail(&piocb->list, &cancel_list);
else
lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
spin_unlock_irqrestore(&phba->hbalock, iflags);
}
if (!list_empty(&cancel_list))
lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
else
/* Make sure HBA is alive */
lpfc_issue_hb_tmo(phba);
if (!list_empty(&abort_list))
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"3387 abort list for txq not empty\n");
INIT_LIST_HEAD(&abort_list);
spin_lock_irqsave(&phba->hbalock, iflags);
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
/* No need to abort the txq list,
* just queue them up for lpfc_sli_cancel_iocbs
*/
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
ulp_command = get_job_cmnd(phba, piocb);
if (piocb->cmd_flag & LPFC_IO_LIBDFC)
continue;
/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
if (ulp_command == CMD_QUE_RING_BUF_CN ||
ulp_command == CMD_QUE_RING_BUF64_CN ||
ulp_command == CMD_CLOSE_XRI_CN ||
ulp_command == CMD_ABORT_XRI_CN ||
ulp_command == CMD_ABORT_XRI_CX)
continue;
/* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
if (vport == phba->pport) {
list_for_each_entry_safe(piocb, tmp_iocb,
&phba->fabric_iocb_list, list) {
list_del_init(&piocb->list);
list_add_tail(&piocb->list, &abort_list);
}
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &abort_list,
IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
return;
}
/**
* lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
* @phba: pointer to lpfc hba data structure.
*
* This routine is used to clean up all the outstanding ELS commands on a
* @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
* routine. After that, it walks the ELS transmit queue to remove all the
* IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
* the IOCBs with the completion callback function associated, the callback
* function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
* un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
* callback function associated, the IOCB will simply be released. Finally,
* it walks the ELS transmit completion queue to issue an abort IOCB to any
* transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
* management plane IOCBs that are not part of the discovery state machine)
* out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
**/
void
lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
{
struct lpfc_vport *vport;
/**
* lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
* @phba: Pointer to phba object.
* @wwnlist: Pointer to list of WWPNs in FPIN payload
* @cnt: count of WWPNs in FPIN payload
*
* This routine is called by LI and PC descriptors.
* Limit the number of WWPNs displayed to 6 log messages, 6 per log message
*/
static void
lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
{
char buf[LPFC_FPIN_WWPN_LINE_SZ];
__be64 wwn;
u64 wwpn;
int i, len;
int line = 0;
int wcnt = 0;
bool endit = false;
len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
for (i = 0; i < cnt; i++) {
/* Are we on the last WWPN */
if (i == (cnt - 1))
endit = true;
/* Extract the next WWPN from the payload */
wwn = *wwnlist++;
wwpn = be64_to_cpu(wwn);
len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
" %016llx", wwpn);
/* Log a message if we are on the last WWPN
* or if we hit the max allowed per message.
*/
wcnt++;
if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
buf[len] = 0;
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"4686 %s\n", buf);
/* Check if we reached the last WWPN */
if (endit)
return;
/* Limit the number of log message displayed per FPIN */
line++;
if (line == LPFC_FPIN_WWPN_NUM_LINE) {
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"4687 %d WWPNs Truncated\n",
cnt - i - 1);
return;
}
/* Start over with next log message */
wcnt = 0;
len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
"Additional WWPNs:");
}
}
}
/**
* lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
* @phba: Pointer to phba object.
* @tlv: Pointer to the Link Integrity Notification Descriptor.
*
* This function processes a Link Integrity FPIN event by logging a message.
**/
static void
lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
{
struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
const char *li_evt_str;
u32 li_evt, cnt;
/**
* lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
* @phba: Pointer to hba object.
* @tlv: Pointer to the Congestion Notification Descriptor TLV
*
* This function processes an FPIN Congestion Notifiction. The notification
* could be an Alarm or Warning. This routine feeds that data into driver's
* running congestion algorithm. It also processes the FPIN by
* logging a message. It returns 1 to indicate deliver this message
* to the upper layer or 0 to indicate don't deliver it.
**/
static int
lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
{
struct lpfc_cgn_info *cp;
struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
const char *cgn_evt_str;
u32 cgn_evt;
const char *cgn_sev_str;
u32 cgn_sev;
uint16_t value;
u32 crc;
bool nm_log = false;
int rc = 1;
/* The driver only takes action on a Credit Stall or Oversubscription
* event type to engage the IO algorithm. The driver prints an
* unmaskable message only for Lost Credit and Credit Stall.
* TODO: Still need to have definition of host action on clear,
* lost credit and device specific event types.
*/
switch (cgn_evt) {
case FPIN_CONGN_LOST_CREDIT:
nm_log = true;
break;
case FPIN_CONGN_CREDIT_STALL:
nm_log = true;
fallthrough;
case FPIN_CONGN_OVERSUBSCRIPTION:
if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
nm_log = false;
switch (cgn_sev) {
case FPIN_CONGN_SEVERITY_ERROR:
/* Take action here for an Alarm event */
if (phba->cmf_active_mode != LPFC_CFG_OFF) {
if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
/* Track of alarm cnt for SYNC_WQE */
atomic_inc(&phba->cgn_sync_alarm_cnt);
}
/* Track alarm cnt for cgn_info regardless
* of whether CMF is configured for Signals
* or FPINs.
*/
atomic_inc(&phba->cgn_fabric_alarm_cnt);
goto cleanup;
}
break;
case FPIN_CONGN_SEVERITY_WARNING:
/* Take action here for a Warning event */
if (phba->cmf_active_mode != LPFC_CFG_OFF) {
if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
/* Track of warning cnt for SYNC_WQE */
atomic_inc(&phba->cgn_sync_warn_cnt);
}
/* Track warning cnt and freq for cgn_info
* regardless of whether CMF is configured for
* Signals or FPINs.
*/
atomic_inc(&phba->cgn_fabric_warn_cnt);
cleanup:
/* Save frequency in ms */
phba->cgn_fpin_frequency =
be32_to_cpu(cgn->event_period);
value = phba->cgn_fpin_frequency;
if (phba->cgn_i) {
cp = (struct lpfc_cgn_info *)
phba->cgn_i->virt;
cp->cgn_alarm_freq =
cpu_to_le16(value);
cp->cgn_warn_freq =
cpu_to_le16(value);
crc = lpfc_cgn_calc_crc32
(cp,
LPFC_CGN_INFO_SZ,
LPFC_CGN_CRC32_SEED);
cp->cgn_info_crc = cpu_to_le32(crc);
}
/* Don't deliver to upper layer since
* driver took action on this tlv.
*/
rc = 0;
}
break;
}
break;
}
/* Change the log level to unmaskable for the following event types. */
lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
LOG_CGN_MGMT | LOG_ELS,
"4683 FPIN CONGESTION %s type %s (x%x) Event "
"Duration %d mSecs\n",
cgn_sev_str, cgn_evt_str, cgn_evt,
be32_to_cpu(cgn->event_period));
return rc;
}
/* FPINs handled only if we are in the right discovery state */
if (vport->port_state < LPFC_DISC_AUTH)
return;
/* make sure there is the full fpin header */
if (fpin_length < sizeof(struct fc_els_fpin))
return;
/* Sanity check descriptor length. The desc_len value does not
* include space for the ELS command and the desc_len fields.
*/
len = be32_to_cpu(fpin->desc_len);
if (fpin_length < len + sizeof(struct fc_els_fpin)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
"4671 Bad ELS FPIN length %d: %d\n",
len, fpin_length);
return;
}
/* process each descriptor separately */
while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
dtag = be32_to_cpu(tlv->desc_tag);
switch (dtag) {
case ELS_DTAG_LNK_INTEGRITY:
lpfc_els_rcv_fpin_li(phba, tlv);
deliver = 1;
break;
case ELS_DTAG_DELIVERY:
lpfc_els_rcv_fpin_del(phba, tlv);
deliver = 1;
break;
case ELS_DTAG_PEER_CONGEST:
lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
deliver = 1;
break;
case ELS_DTAG_CONGESTION:
deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
break;
default:
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
"4678 unknown FPIN descriptor[%d]: "
"tag x%x (%s)\n",
desc_cnt, dtag, dtag_nm);
/* If descriptor is bad, drop the rest of the data */
return;
}
lpfc_cgn_update_stat(phba, dtag);
cnt = be32_to_cpu(tlv->desc_len);
/* Sanity check descriptor length. The desc_len value does not
* include space for the desc_tag and the desc_len fields.
*/
len -= (cnt + sizeof(struct fc_tlv_desc));
if (len < 0) {
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
"4672 Bad FPIN descriptor TLV length "
"%d: %d %d %s\n",
cnt, len, fpin_length, dtag_nm);
return;
}
/* Format payload such that the FPIN delivered to the
* upper layer is a single descriptor FPIN.
*/
if (desc_cnt)
memcpy(first_tlv, current_tlv,
(cnt + sizeof(struct fc_els_fpin)));
/* Adjust the length so that it only reflects a
* single descriptor FPIN.
*/
fpin_length = cnt + sizeof(struct fc_els_fpin);
fpin->desc_len = cpu_to_be32(fpin_length);
fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
/* Send every descriptor individually to the upper layer */
if (deliver)
fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
fpin_length, (char *)fpin, 0);
desc_cnt++;
}
}
/**
* lpfc_els_unsol_buffer - Process an unsolicited event data buffer
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @vport: pointer to a host virtual N_Port data structure.
* @elsiocb: pointer to lpfc els command iocb data structure.
*
* This routine is used for processing the IOCB associated with a unsolicited
* event. It first determines whether there is an existing ndlp that matches
* the DID from the unsolicited IOCB. If not, it will create a new one with
* the DID from the unsolicited IOCB. The ELS command from the unsolicited
* IOCB is then used to invoke the proper routine and to set up proper state
* of the discovery state machine.
**/
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
{
struct lpfc_nodelist *ndlp;
struct ls_rjt stat;
u32 *payload, payload_len;
u32 cmd = 0, did = 0, newnode, status = 0;
uint8_t rjt_exp, rjt_err = 0, init_link = 0;
struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
LPFC_MBOXQ_t *mbox;
/* Check to see if link went down during discovery */
if (lpfc_els_chk_latt(vport))
goto dropit;
/* Ignore traffic received during vport shutdown. */
if (test_bit(FC_UNLOADING, &vport->load_flag))
goto dropit;
/* If NPort discovery is delayed drop incoming ELS */
if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) &&
cmd != ELS_CMD_PLOGI)
goto dropit;
ndlp = lpfc_findnode_did(vport, did);
if (!ndlp) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, did);
if (!ndlp)
goto dropit;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
ndlp->nlp_type |= NLP_FABRIC;
} else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
}
phba->fc_stat.elsRcvFrame++;
/*
* Do not process any unsolicited ELS commands
* if the ndlp is in DEV_LOSS
*/
if (test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag)) {
if (newnode)
lpfc_nlp_put(ndlp);
goto dropit;
}
elsiocb->ndlp = lpfc_nlp_get(ndlp);
if (!elsiocb->ndlp)
goto dropit;
elsiocb->vport = vport;
if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
cmd &= ELS_CMD_MASK;
}
/* ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0112 ELS command x%x received from NPORT x%x "
"refcnt %d Data: x%x x%lx x%x x%x\n",
cmd, did, kref_read(&ndlp->kref), vport->port_state,
vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
/* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
(cmd != ELS_CMD_FLOGI) &&
!((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) {
rjt_err = LSRJT_LOGICAL_BSY;
rjt_exp = LSEXP_NOTHING_MORE;
goto lsrjt;
}
phba->fc_stat.elsRcvPLOGI++;
ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
if (phba->sli_rev == LPFC_SLI_REV4 &&
test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
vport->fc_prevDID = vport->fc_myDID;
/* Our DID needs to be updated before registering
* the vfi. This is done in lpfc_rcv_plogi but
* that is called after the reg_vfi.
*/
vport->fc_myDID =
bf_get(els_rsp64_sid,
&elsiocb->wqe.xmit_els_rsp);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"3312 Remote port assigned DID x%x "
"%x\n", vport->fc_myDID,
vport->fc_prevDID);
}
lpfc_send_els_event(vport, ndlp, payload);
/* If Nport discovery is delayed, reject PLOGIs */
if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE;
break;
}
/* If the driver believes fabric discovery is done and is ready,
* bounce the link. There is some descrepancy.
*/
if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
test_bit(FC_PT2PT, &vport->fc_flag) &&
vport->rcv_flogi_cnt >= 1) {
rjt_err = LSRJT_LOGICAL_BSY;
rjt_exp = LSEXP_NOTHING_MORE;
init_link++;
goto lsrjt;
}
lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
/* retain node if our response is deferred */
if (phba->defer_flogi_acc.flag)
break;
if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM);
break;
case ELS_CMD_LOGO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
"RCV LOGO: did:x%x/ste:x%x flg:x%lx",
did, vport->port_state, ndlp->nlp_flag);
/* There are no replies, so no rjt codes */
break;
case ELS_CMD_EDC:
lpfc_els_rcv_edc(vport, elsiocb, ndlp);
break;
case ELS_CMD_RDF:
phba->fc_stat.elsRcvRDF++;
/* Accept RDF only from fabric controller */
if (did != Fabric_Cntl_DID) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
"1115 Received RDF from invalid DID "
"x%x\n", did);
rjt_err = LSRJT_PROTOCOL_ERR;
rjt_exp = LSEXP_NOTHING_MORE;
goto lsrjt;
}
/* Unknown ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0115 Unknown ELS command x%x "
"received from NPORT x%x\n", cmd, did);
if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM);
break;
}
lsrjt:
/* check if need to LS_RJT received ELS cmd */
if (rjt_err) {
memset(&stat, 0, sizeof(stat));
stat.un.b.lsRjtRsnCode = rjt_err;
stat.un.b.lsRjtRsnCodeExp = rjt_exp;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
NULL);
/* Remove the reference from above for new nodes. */
if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM);
}
/* Release the reference on this elsiocb, not the ndlp. */
lpfc_nlp_put(elsiocb->ndlp);
elsiocb->ndlp = NULL;
/* Special case. Driver received an unsolicited command that
* unsupportable given the driver's current state. Reset the
* link and start over.
*/
if (init_link) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return;
lpfc_linkdown(phba);
lpfc_init_link(phba, mbox,
phba->cfg_topology,
phba->cfg_link_speed);
mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
MBX_NOT_FINISHED)
mempool_free(mbox, phba->mbox_mem_pool);
}
return;
dropit:
if (vport && !test_bit(FC_UNLOADING, &vport->load_flag))
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"0111 Dropping received ELS cmd "
"Data: x%x x%x x%x x%x\n",
cmd, status, get_job_word4(phba, elsiocb), did);
phba->fc_stat.elsRcvDrop++;
}
/**
* lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
* @phba: pointer to lpfc hba data structure.
* @pring: pointer to a SLI ring.
* @elsiocb: pointer to lpfc els iocb data structure.
*
* This routine is used to process an unsolicited event received from a SLI
* (Service Level Interface) ring. The actual processing of the data buffer
* associated with the unsolicited event is done by invoking the routine
* lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
* SLI ring on which the unsolicited event was received.
**/
void
lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *elsiocb)
{
struct lpfc_vport *vport = elsiocb->vport;
u32 ulp_command, status, parameter, bde_count = 0;
IOCB_t *icmd;
struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
dma_addr_t paddr;
/* If there are no BDEs associated
* with this IOCB, there is nothing to do.
*/
if (bde_count == 0)
return;
/* Account for SLI2 or SLI3 and later unsolicited buffering */
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
elsiocb->cmd_dmabuf = bdeBuf1;
if (bde_count == 2)
elsiocb->bpl_dmabuf = bdeBuf2;
} else {
icmd = &elsiocb->iocb;
paddr = getPaddr(icmd->un.cont64[0].addrHigh,
icmd->un.cont64[0].addrLow);
elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
paddr);
if (bde_count == 2) {
paddr = getPaddr(icmd->un.cont64[1].addrHigh,
icmd->un.cont64[1].addrLow);
elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
pring,
paddr);
}
}
lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
/*
* The different unsolicited event handlers would tell us
* if they are done with "mp" by setting cmd_dmabuf to NULL.
*/
if (elsiocb->cmd_dmabuf) {
lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
elsiocb->cmd_dmabuf = NULL;
}
if (elsiocb->bpl_dmabuf) {
lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
elsiocb->bpl_dmabuf = NULL;
}
/* If this is the first time, allocate an ndlp and initialize
* it. Otherwise, make sure the node is enabled and then do the
* login.
*/
ndlp = lpfc_findnode_did(vport, FDMI_DID);
if (!ndlp) {
ndlp = lpfc_nlp_init(vport, FDMI_DID);
if (ndlp) {
ndlp->nlp_type |= NLP_FABRIC;
} else {
return;
}
}
/**
* lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
* @phba: pointer to lpfc hba data structure.
* @vport: pointer to a virtual N_Port data structure.
*
* This routine issues a Port Login (PLOGI) to the Name Server with
* State Change Request (SCR) for a @vport. This routine will create an
* ndlp for the Name Server associated to the @vport if such node does
* not already exist. The PLOGI to Name Server is issued by invoking the
* lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
* (FDMI) is configured to the @vport, a FDMI node will be created and
* the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
**/
void
lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp;
/*
* If lpfc_delay_discovery parameter is set and the clean address
* bit is cleared and fc fabric parameters chenged, delay FC NPort
* discovery.
*/
if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"3334 Delay fc port discovery for %d secs\n",
phba->fc_ratov);
mod_timer(&vport->delayed_disc_tmo,
jiffies + secs_to_jiffies(phba->fc_ratov));
return;
}
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (!ndlp) {
ndlp = lpfc_nlp_init(vport, NameServer_DID);
if (!ndlp) {
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
lpfc_disc_start(vport);
return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"0251 NameServer login: no memory\n");
return;
}
}
/**
* lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
* @phba: pointer to lpfc hba data structure.
* @pmb: pointer to the driver internal queue element for mailbox command.
*
* This routine is the completion callback function to register new vport
* mailbox command. If the new vport mailbox command completes successfully,
* the fabric registration login shall be performed on physical port (the
* new vport created is actually a physical port, with VPI 0) or the port
* login to Name Server for State Change Request (SCR) will be performed
* on virtual port (real virtual port, with VPI greater than 0).
**/
static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
MAILBOX_t *mb = &pmb->u.mb;
int rc;
switch (mb->mbxStatus) {
case 0x11: /* unsupported feature */
case 0x9603: /* max_vpi exceeded */
case 0x9602: /* Link event since CLEAR_LA */
/* giving up on vport registration */
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
lpfc_can_disctmo(vport);
break;
/* If reg_vpi fail with invalid VPI status, re-init VPI */
case 0x20:
set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
lpfc_init_vpi(phba, pmb, vport->vpi);
pmb->vport = vport;
pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb,
MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_vlog(vport, KERN_ERR,
LOG_TRACE_EVENT,
"2732 Failed to issue INIT_VPI"
" mailbox command\n");
} else {
lpfc_nlp_put(ndlp);
return;
}
fallthrough;
default:
/* Try to recover from this error */
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
if (mb->mbxStatus == MBX_NOT_FINISHED)
break;
if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
!test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) {
if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_issue_init_vfi(vport);
else
lpfc_initial_flogi(vport);
} else {
lpfc_initial_fdisc(vport);
}
break;
}
} else {
spin_lock_irq(shost->host_lock);
vport->vpi_state |= LPFC_VPI_REGISTERED;
spin_unlock_irq(shost->host_lock);
if (vport == phba->pport) {
if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport);
else {
/*
* If the physical port is instantiated using
* FDISC, do not start vport discovery.
*/
if (vport->port_state != LPFC_FDISC)
lpfc_start_fdiscs(phba);
lpfc_do_scr_ns_plogi(phba, vport);
}
} else {
lpfc_do_scr_ns_plogi(phba, vport);
}
}
mbox_err_exit:
/* Now, we decrement the ndlp reference count held for this
* callback function
*/
lpfc_nlp_put(ndlp);
mempool_free(pmb, phba->mbox_mem_pool);
/* reinitialize the VMID datastructure before returning.
* this is specifically for vport
*/
if (lpfc_is_vmid_enabled(phba))
lpfc_reinit_vmid(vport);
vport->vmid_flag = vport->phba->pport->vmid_flag;
return;
}
/**
* lpfc_register_new_vport - Register a new vport with a HBA
* @phba: pointer to lpfc hba data structure.
* @vport: pointer to a host virtual N_Port data structure.
* @ndlp: pointer to a node-list data structure.
*
* This routine registers the @vport as a new virtual port with a HBA.
* It is done through a registering vpi mailbox command.
**/
void
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp)
{
LPFC_MBOXQ_t *mbox;
/**
* lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
* @phba: pointer to lpfc hba data structure.
*
* This routine cancels the retry delay timers to all the vports.
**/
void
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
{
struct lpfc_vport **vports;
struct lpfc_nodelist *ndlp;
uint32_t link_state;
int i;
/* Treat this failure as linkdown for all vports */
link_state = phba->link_state;
lpfc_linkdown(phba);
phba->link_state = link_state;
vports = lpfc_create_vport_work_array(phba);
if (vports) {
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
if (ndlp)
lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
lpfc_els_flush_cmd(vports[i]);
}
lpfc_destroy_vport_work_array(phba, vports);
}
}
/**
* lpfc_retry_pport_discovery - Start timer to retry FLOGI.
* @phba: pointer to lpfc hba data structure.
*
* This routine abort all pending discovery commands and
* start a timer to retry FLOGI for the physical port
* discovery.
**/
void
lpfc_retry_pport_discovery(struct lpfc_hba *phba)
{
struct lpfc_nodelist *ndlp;
/* Cancel the all vports retry delay retry timers */
lpfc_cancel_all_vport_retry_delay_timer(phba);
/* If fabric require FLOGI, then re-instantiate physical login */
ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
if (!ndlp)
return;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
ulp_status, ulp_word4,
vport->fc_prevDID); /* Since all FDISCs are being single threaded, we *mustresetthediscoverytimerforALLvports *waitingtosendFDISCwhenonecompletes.
*/
list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
lpfc_set_disctmo(piocb->vport);
}
if (test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags)) { /* Wake up lpfc_vport_delete if waiting...*/ if (ndlp->logo_waitq)
wake_up(ndlp->logo_waitq);
clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
}
repeat:
iocb = NULL;
spin_lock_irqsave(&phba->hbalock, iflags); /* Post any pending iocb to the SLI layer */ if (atomic_read(&phba->fabric_iocb_count) == 0) {
list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
list); if (iocb) /* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
}
spin_unlock_irqrestore(&phba->hbalock, iflags); if (iocb) {
iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
iocb->cmd_flag |= LPFC_IO_FABRIC;
atomic_dec(&phba->fabric_iocb_count); if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { /* Post any pending iocbs to HBA */
lpfc_resume_fabric_iocbs(phba);
}
}
if (ready) /* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
spin_unlock_irqrestore(&phba->hbalock, iflags); if (ready) {
iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
iocb->cmd_flag |= LPFC_IO_FABRIC;
/* If the xri on the abts_els_sgl list is for the Fport *nodeandthevportisunloading,thexriabortedwcqe *likelyisn'tcomingback.Justreleasethesgl.
*/ if (test_bit(FC_UNLOADING, &vport->load_flag) &&
ndlp->nlp_DID == Fabric_DID) {
list_del(&sglq_entry->list);
sglq_entry->state = SGL_FREED;
list_add_tail(&sglq_entry->list,
&phba->sli4_hba.lpfc_els_sgl_list);
}
}
}
spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); return;
}
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