diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_els.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_els.c | 3258 |
1 files changed, 3258 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c new file mode 100644 index 000000000000..68d1b77e0256 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -0,0 +1,3258 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Enterprise Fibre Channel Host Bus Adapters. * + * Refer to the README file included with this package for * + * driver version and adapter support. * + * Copyright (C) 2004 Emulex Corporation. * + * www.emulex.com * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of the GNU General Public License * + * as published by the Free Software Foundation; either version 2 * + * of the License, or (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details, a copy of which * + * can be found in the file COPYING included with this package. * + *******************************************************************/ + +/* + * $Id: lpfc_els.c 1.186 2005/04/13 14:26:55EDT sf_support Exp $ + */ + +#include <linux/blkdev.h> +#include <linux/pci.h> +#include <linux/interrupt.h> + +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport_fc.h> + +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" + +static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); +static int lpfc_max_els_tries = 3; + +static int +lpfc_els_chk_latt(struct lpfc_hba * phba) +{ + struct lpfc_sli *psli; + LPFC_MBOXQ_t *mbox; + uint32_t ha_copy; + int rc; + + psli = &phba->sli; + + if ((phba->hba_state >= LPFC_HBA_READY) || + (phba->hba_state == LPFC_LINK_DOWN)) + return 0; + + /* Read the HBA Host Attention Register */ + spin_lock_irq(phba->host->host_lock); + ha_copy = readl(phba->HAregaddr); + spin_unlock_irq(phba->host->host_lock); + + if (!(ha_copy & HA_LATT)) + return 0; + + /* Pending Link Event during Discovery */ + lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY, + "%d:0237 Pending Link Event during " + "Discovery: State x%x\n", + phba->brd_no, phba->hba_state); + + /* CLEAR_LA should re-enable link attention events and + * we should then imediately take a LATT event. The + * LATT processing should call lpfc_linkdown() which + * will cleanup any left over in-progress discovery + * events. + */ + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_ABORT_DISCOVERY; + spin_unlock_irq(phba->host->host_lock); + + if (phba->hba_state != LPFC_CLEAR_LA) { + if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) { + phba->hba_state = LPFC_CLEAR_LA; + lpfc_clear_la(phba, mbox); + mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; + rc = lpfc_sli_issue_mbox (phba, mbox, + (MBX_NOWAIT | MBX_STOP_IOCB)); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + phba->hba_state = LPFC_HBA_ERROR; + } + } + } + + return (1); + +} + +static struct lpfc_iocbq * +lpfc_prep_els_iocb(struct lpfc_hba * phba, + uint8_t expectRsp, + uint16_t cmdSize, + uint8_t retry, struct lpfc_nodelist * ndlp, uint32_t elscmd) +{ + struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *elsiocb = NULL; + struct lpfc_dmabuf *pcmd, *prsp, *pbuflist; + struct ulp_bde64 *bpl; + IOCB_t *icmd; + + pring = &phba->sli.ring[LPFC_ELS_RING]; + + if (phba->hba_state < LPFC_LINK_UP) + return NULL; + + + /* Allocate buffer for command iocb */ + spin_lock_irq(phba->host->host_lock); + list_remove_head(lpfc_iocb_list, elsiocb, struct lpfc_iocbq, list); + spin_unlock_irq(phba->host->host_lock); + + if (elsiocb == NULL) + return NULL; + memset(elsiocb, 0, sizeof (struct lpfc_iocbq)); + icmd = &elsiocb->iocb; + + /* fill in BDEs for command */ + /* Allocate buffer for command payload */ + if (((pcmd = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) || + ((pcmd->virt = lpfc_mbuf_alloc(phba, + MEM_PRI, &(pcmd->phys))) == 0)) { + if (pcmd) + kfree(pcmd); + + list_add_tail(&elsiocb->list, lpfc_iocb_list); + return NULL; + } + + INIT_LIST_HEAD(&pcmd->list); + + /* Allocate buffer for response payload */ + if (expectRsp) { + prsp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); + if (prsp) + prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, + &prsp->phys); + if (prsp == 0 || prsp->virt == 0) { + if (prsp) + kfree(prsp); + lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); + kfree(pcmd); + list_add_tail(&elsiocb->list, lpfc_iocb_list); + return NULL; + } + INIT_LIST_HEAD(&prsp->list); + } else { + prsp = NULL; + } + + /* Allocate buffer for Buffer ptr list */ + pbuflist = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); + if (pbuflist) + pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI, + &pbuflist->phys); + if (pbuflist == 0 || pbuflist->virt == 0) { + list_add_tail(&elsiocb->list, lpfc_iocb_list); + lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); + lpfc_mbuf_free(phba, prsp->virt, prsp->phys); + kfree(pcmd); + kfree(prsp); + if (pbuflist) + kfree(pbuflist); + return NULL; + } + + INIT_LIST_HEAD(&pbuflist->list); + + icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys); + icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys); + icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BDL; + if (expectRsp) { + icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); + icmd->un.elsreq64.remoteID = ndlp->nlp_DID; /* DID */ + icmd->ulpCommand = CMD_ELS_REQUEST64_CR; + } else { + icmd->un.elsreq64.bdl.bdeSize = sizeof (struct ulp_bde64); + icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX; + } + + icmd->ulpBdeCount = 1; + icmd->ulpLe = 1; + icmd->ulpClass = CLASS3; + + bpl = (struct ulp_bde64 *) pbuflist->virt; + bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys)); + bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys)); + bpl->tus.f.bdeSize = cmdSize; + bpl->tus.f.bdeFlags = 0; + bpl->tus.w = le32_to_cpu(bpl->tus.w); + + if (expectRsp) { + bpl++; + bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys)); + bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys)); + bpl->tus.f.bdeSize = FCELSSIZE; + bpl->tus.f.bdeFlags = BUFF_USE_RCV; + bpl->tus.w = le32_to_cpu(bpl->tus.w); + } + + /* Save for completion so we can release these resources */ + elsiocb->context1 = (uint8_t *) ndlp; + elsiocb->context2 = (uint8_t *) pcmd; + elsiocb->context3 = (uint8_t *) pbuflist; + elsiocb->retry = retry; + elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; + + if (prsp) { + list_add(&prsp->list, &pcmd->list); + } + + if (expectRsp) { + /* Xmit ELS command <elsCmd> to remote NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0116 Xmit ELS command x%x to remote " + "NPORT x%x Data: x%x x%x\n", + phba->brd_no, elscmd, + ndlp->nlp_DID, icmd->ulpIoTag, phba->hba_state); + } else { + /* Xmit ELS response <elsCmd> to remote NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0117 Xmit ELS response x%x to remote " + "NPORT x%x Data: x%x x%x\n", + phba->brd_no, elscmd, + ndlp->nlp_DID, icmd->ulpIoTag, cmdSize); + } + + return (elsiocb); +} + + +static int +lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + struct serv_parm *sp, IOCB_t *irsp) +{ + LPFC_MBOXQ_t *mbox; + int rc; + + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_FABRIC; + spin_unlock_irq(phba->host->host_lock); + + phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); + if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ + phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000; + + phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; + + if (phba->fc_topology == TOPOLOGY_LOOP) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_PUBLIC_LOOP; + spin_unlock_irq(phba->host->host_lock); + } else { + /* + * If we are a N-port connected to a Fabric, fixup sparam's so + * logins to devices on remote loops work. + */ + phba->fc_sparam.cmn.altBbCredit = 1; + } + + phba->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; + memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); + memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name)); + ndlp->nlp_class_sup = 0; + if (sp->cls1.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS1; + if (sp->cls2.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS2; + if (sp->cls3.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS3; + if (sp->cls4.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS4; + ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | + sp->cmn.bbRcvSizeLsb; + memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + goto fail; + + phba->hba_state = LPFC_FABRIC_CFG_LINK; + lpfc_config_link(phba, mbox); + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB); + if (rc == MBX_NOT_FINISHED) + goto fail_free_mbox; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + goto fail; + + if (lpfc_reg_login(phba, Fabric_DID, (uint8_t *) sp, mbox, 0)) + goto fail_free_mbox; + + /* + * set_slim mailbox command needs to execute first, + * queue this command to be processed later. + */ + mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; + mbox->context2 = ndlp; + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB); + if (rc == MBX_NOT_FINISHED) + goto fail_free_mbox; + + return 0; + + fail_free_mbox: + mempool_free(mbox, phba->mbox_mem_pool); + fail: + return -ENXIO; +} + +/* + * We FLOGIed into an NPort, initiate pt2pt protocol + */ +static int +lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + struct serv_parm *sp) +{ + LPFC_MBOXQ_t *mbox; + int rc; + + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + spin_unlock_irq(phba->host->host_lock); + + phba->fc_edtov = FF_DEF_EDTOV; + phba->fc_ratov = FF_DEF_RATOV; + rc = memcmp(&phba->fc_portname, &sp->portName, + sizeof(struct lpfc_name)); + if (rc >= 0) { + /* This side will initiate the PLOGI */ + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_PT2PT_PLOGI; + spin_unlock_irq(phba->host->host_lock); + + /* + * N_Port ID cannot be 0, set our to LocalID the other + * side will be RemoteID. + */ + + /* not equal */ + if (rc) + phba->fc_myDID = PT2PT_LocalID; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + goto fail; + + lpfc_config_link(phba, mbox); + + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(phba, mbox, + MBX_NOWAIT | MBX_STOP_IOCB); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + goto fail; + } + mempool_free(ndlp, phba->nlp_mem_pool); + + ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, PT2PT_RemoteID); + if (!ndlp) { + /* + * Cannot find existing Fabric ndlp, so allocate a + * new one + */ + ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); + if (!ndlp) + goto fail; + + lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID); + } + + memcpy(&ndlp->nlp_portname, &sp->portName, + sizeof(struct lpfc_name)); + memcpy(&ndlp->nlp_nodename, &sp->nodeName, + sizeof(struct lpfc_name)); + ndlp->nlp_state = NLP_STE_NPR_NODE; + lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + } else { + /* This side will wait for the PLOGI */ + mempool_free( ndlp, phba->nlp_mem_pool); + } + + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_PT2PT; + spin_unlock_irq(phba->host->host_lock); + + /* Start discovery - this should just do CLEAR_LA */ + lpfc_disc_start(phba); + return 0; + fail: + return -ENXIO; +} + +static void +lpfc_cmpl_els_flogi(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp = &rspiocb->iocb; + struct lpfc_nodelist *ndlp = cmdiocb->context1; + struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; + struct serv_parm *sp; + int rc; + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) { + lpfc_nlp_remove(phba, ndlp); + goto out; + } + + if (irsp->ulpStatus) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + goto out; + } + /* FLOGI failed, so there is no fabric */ + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + spin_unlock_irq(phba->host->host_lock); + + /* If private loop, then allow max outstandting els to be + * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no + * alpa map would take too long otherwise. + */ + if (phba->alpa_map[0] == 0) { + phba->cfg_discovery_threads = + LPFC_MAX_DISC_THREADS; + } + + /* FLOGI failure */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_ELS, + "%d:0100 FLOGI failure Data: x%x x%x\n", + phba->brd_no, + irsp->ulpStatus, irsp->un.ulpWord[4]); + goto flogifail; + } + + /* + * The FLogI succeeded. Sync the data for the CPU before + * accessing it. + */ + prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); + + sp = prsp->virt + sizeof(uint32_t); + + /* FLOGI completes successfully */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0101 FLOGI completes sucessfully " + "Data: x%x x%x x%x x%x\n", + phba->brd_no, + irsp->un.ulpWord[4], sp->cmn.e_d_tov, + sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution); + + if (phba->hba_state == LPFC_FLOGI) { + /* + * If Common Service Parameters indicate Nport + * we are point to point, if Fport we are Fabric. + */ + if (sp->cmn.fPort) + rc = lpfc_cmpl_els_flogi_fabric(phba, ndlp, sp, irsp); + else + rc = lpfc_cmpl_els_flogi_nport(phba, ndlp, sp); + + if (!rc) + goto out; + } + +flogifail: + lpfc_nlp_remove(phba, ndlp); + + if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT || + (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED && + irsp->un.ulpWord[4] != IOERR_SLI_DOWN)) { + /* FLOGI failed, so just use loop map to make discovery list */ + lpfc_disc_list_loopmap(phba); + + /* Start discovery */ + lpfc_disc_start(phba); + } + +out: + lpfc_els_free_iocb(phba, cmdiocb); +} + +static int +lpfc_issue_els_flogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, + uint8_t retry) +{ + struct serv_parm *sp; + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + uint8_t *pcmd; + uint16_t cmdsize; + uint32_t tmo; + int rc; + + pring = &phba->sli.ring[LPFC_ELS_RING]; + + cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm)); + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_FLOGI)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + /* For FLOGI request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI; + pcmd += sizeof (uint32_t); + memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm)); + sp = (struct serv_parm *) pcmd; + + /* Setup CSPs accordingly for Fabric */ + sp->cmn.e_d_tov = 0; + sp->cmn.w2.r_a_tov = 0; + sp->cls1.classValid = 0; + sp->cls2.seqDelivery = 1; + sp->cls3.seqDelivery = 1; + if (sp->cmn.fcphLow < FC_PH3) + sp->cmn.fcphLow = FC_PH3; + if (sp->cmn.fcphHigh < FC_PH3) + sp->cmn.fcphHigh = FC_PH3; + + tmo = phba->fc_ratov; + phba->fc_ratov = LPFC_DISC_FLOGI_TMO; + lpfc_set_disctmo(phba); + phba->fc_ratov = tmo; + + phba->fc_stat.elsXmitFLOGI++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi; + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +int +lpfc_els_abort_flogi(struct lpfc_hba * phba) +{ + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *iocb, *next_iocb; + struct lpfc_nodelist *ndlp; + IOCB_t *icmd; + + /* Abort outstanding I/O on NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "%d:0201 Abort outstanding I/O on NPort x%x\n", + phba->brd_no, Fabric_DID); + + pring = &phba->sli.ring[LPFC_ELS_RING]; + + /* + * Check the txcmplq for an iocb that matches the nport the driver is + * searching for. + */ + spin_lock_irq(phba->host->host_lock); + list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { + icmd = &iocb->iocb; + if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) { + ndlp = (struct lpfc_nodelist *)(iocb->context1); + if (ndlp && (ndlp->nlp_DID == Fabric_DID)) { + list_del(&iocb->list); + pring->txcmplq_cnt--; + + if ((icmd->un.elsreq64.bdl.ulpIoTag32)) { + lpfc_sli_issue_abort_iotag32 + (phba, pring, iocb); + } + if (iocb->iocb_cmpl) { + icmd->ulpStatus = IOSTAT_LOCAL_REJECT; + icmd->un.ulpWord[4] = + IOERR_SLI_ABORTED; + spin_unlock_irq(phba->host->host_lock); + (iocb->iocb_cmpl) (phba, iocb, iocb); + spin_lock_irq(phba->host->host_lock); + } else { + list_add_tail(&iocb->list, + &phba->lpfc_iocb_list); + } + } + } + } + spin_unlock_irq(phba->host->host_lock); + + return 0; +} + +int +lpfc_initial_flogi(struct lpfc_hba * phba) +{ + struct lpfc_nodelist *ndlp; + + /* First look for Fabric ndlp on the unmapped list */ + + if ((ndlp = + lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED, + Fabric_DID)) == 0) { + /* Cannot find existing Fabric ndlp, so allocate a new one */ + if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) + == 0) { + return (0); + } + lpfc_nlp_init(phba, ndlp, Fabric_DID); + } + else { + phba->fc_unmap_cnt--; + list_del(&ndlp->nlp_listp); + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_LIST_MASK; + spin_unlock_irq(phba->host->host_lock); + } + if (lpfc_issue_els_flogi(phba, ndlp, 0)) { + mempool_free( ndlp, phba->nlp_mem_pool); + } + return (1); +} + +static void +lpfc_more_plogi(struct lpfc_hba * phba) +{ + int sentplogi; + + if (phba->num_disc_nodes) + phba->num_disc_nodes--; + + /* Continue discovery with <num_disc_nodes> PLOGIs to go */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "%d:0232 Continue discovery with %d PLOGIs to go " + "Data: x%x x%x x%x\n", + phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt, + phba->fc_flag, phba->hba_state); + + /* Check to see if there are more PLOGIs to be sent */ + if (phba->fc_flag & FC_NLP_MORE) { + /* go thru NPR list and issue any remaining ELS PLOGIs */ + sentplogi = lpfc_els_disc_plogi(phba); + } + return; +} + +static void +lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + struct lpfc_sli *psli; + struct lpfc_nodelist *ndlp; + int disc, rc, did, type; + + psli = &phba->sli; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->context_un.rsp_iocb = rspiocb; + + irsp = &rspiocb->iocb; + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_PLOGI_SND; + spin_unlock_irq(phba->host->host_lock); + + /* Since ndlp can be freed in the disc state machine, note if this node + * is being used during discovery. + */ + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + rc = 0; + + /* PLOGI completes to NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0102 PLOGI completes to NPort x%x " + "Data: x%x x%x x%x x%x\n", + phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus, + irsp->un.ulpWord[4], disc, phba->num_disc_nodes); + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); + goto out; + } + + /* ndlp could be freed in DSM, save these values now */ + type = ndlp->nlp_type; + did = ndlp->nlp_DID; + + if (irsp->ulpStatus) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + if (disc) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); + } + goto out; + } + + /* PLOGI failed */ + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) || + (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) { + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + } + else { + rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_PLOGI); + } + } else { + /* Good status, call state machine */ + rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_PLOGI); + } + + if (type & NLP_FABRIC) { + /* If we cannot login to Nameserver, kick off discovery now */ + if ((did == NameServer_DID) && (rc == NLP_STE_FREED_NODE)) { + lpfc_disc_start(phba); + } + goto out; + } + + if (disc && phba->num_disc_nodes) { + /* Check to see if there are more PLOGIs to be sent */ + lpfc_more_plogi(phba); + } + + if (rc != NLP_STE_FREED_NODE) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); + } + + if (phba->num_disc_nodes == 0) { + if(disc) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~FC_NDISC_ACTIVE; + spin_unlock_irq(phba->host->host_lock); + } + lpfc_can_disctmo(phba); + if (phba->fc_flag & FC_RSCN_MODE) { + /* Check to see if more RSCNs came in while we were + * processing this one. + */ + if ((phba->fc_rscn_id_cnt == 0) && + (!(phba->fc_flag & FC_RSCN_DISCOVERY))) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~FC_RSCN_MODE; + spin_unlock_irq(phba->host->host_lock); + } else { + lpfc_els_handle_rscn(phba); + } + } + } + +out: + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_issue_els_plogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, + uint8_t retry) +{ + struct serv_parm *sp; + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm)); + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_PLOGI)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + /* For PLOGI request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI; + pcmd += sizeof (uint32_t); + memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm)); + sp = (struct serv_parm *) pcmd; + + if (sp->cmn.fcphLow < FC_PH_4_3) + sp->cmn.fcphLow = FC_PH_4_3; + + if (sp->cmn.fcphHigh < FC_PH3) + sp->cmn.fcphHigh = FC_PH3; + + phba->fc_stat.elsXmitPLOGI++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_PLOGI_SND; + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + ndlp->nlp_flag &= ~NLP_PLOGI_SND; + spin_unlock_irq(phba->host->host_lock); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + return (0); +} + +static void +lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + struct lpfc_sli *psli; + struct lpfc_nodelist *ndlp; + + psli = &phba->sli; + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->context_un.rsp_iocb = rspiocb; + + irsp = &(rspiocb->iocb); + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_PRLI_SND; + spin_unlock_irq(phba->host->host_lock); + + /* PRLI completes to NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0103 PRLI completes to NPort x%x " + "Data: x%x x%x x%x\n", + phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus, + irsp->un.ulpWord[4], phba->num_disc_nodes); + + phba->fc_prli_sent--; + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) + goto out; + + if (irsp->ulpStatus) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + goto out; + } + /* PRLI failed */ + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) || + (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) { + goto out; + } + else { + lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_PRLI); + } + } else { + /* Good status, call state machine */ + lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI); + } + +out: + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, + uint8_t retry) +{ + PRLI *npr; + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = (sizeof (uint32_t) + sizeof (PRLI)); + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_PRLI)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + /* For PRLI request, remainder of payload is service parameters */ + memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t))); + *((uint32_t *) (pcmd)) = ELS_CMD_PRLI; + pcmd += sizeof (uint32_t); + + /* For PRLI, remainder of payload is PRLI parameter page */ + npr = (PRLI *) pcmd; + /* + * If our firmware version is 3.20 or later, + * set the following bits for FC-TAPE support. + */ + if (phba->vpd.rev.feaLevelHigh >= 0x02) { + npr->ConfmComplAllowed = 1; + npr->Retry = 1; + npr->TaskRetryIdReq = 1; + } + npr->estabImagePair = 1; + npr->readXferRdyDis = 1; + + /* For FCP support */ + npr->prliType = PRLI_FCP_TYPE; + npr->initiatorFunc = 1; + + phba->fc_stat.elsXmitPRLI++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_prli; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_PRLI_SND; + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + ndlp->nlp_flag &= ~NLP_PRLI_SND; + spin_unlock_irq(phba->host->host_lock); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + phba->fc_prli_sent++; + return (0); +} + +static void +lpfc_more_adisc(struct lpfc_hba * phba) +{ + int sentadisc; + + if (phba->num_disc_nodes) + phba->num_disc_nodes--; + + /* Continue discovery with <num_disc_nodes> ADISCs to go */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "%d:0210 Continue discovery with %d ADISCs to go " + "Data: x%x x%x x%x\n", + phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt, + phba->fc_flag, phba->hba_state); + + /* Check to see if there are more ADISCs to be sent */ + if (phba->fc_flag & FC_NLP_MORE) { + lpfc_set_disctmo(phba); + + /* go thru NPR list and issue any remaining ELS ADISCs */ + sentadisc = lpfc_els_disc_adisc(phba); + } + return; +} + +static void +lpfc_rscn_disc(struct lpfc_hba * phba) +{ + /* RSCN discovery */ + /* go thru NPR list and issue ELS PLOGIs */ + if (phba->fc_npr_cnt) { + if (lpfc_els_disc_plogi(phba)) + return; + } + if (phba->fc_flag & FC_RSCN_MODE) { + /* Check to see if more RSCNs came in while we were + * processing this one. + */ + if ((phba->fc_rscn_id_cnt == 0) && + (!(phba->fc_flag & FC_RSCN_DISCOVERY))) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~FC_RSCN_MODE; + spin_unlock_irq(phba->host->host_lock); + } else { + lpfc_els_handle_rscn(phba); + } + } +} + +static void +lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + struct lpfc_sli *psli; + struct lpfc_nodelist *ndlp; + LPFC_MBOXQ_t *mbox; + int disc, rc; + + psli = &phba->sli; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->context_un.rsp_iocb = rspiocb; + + irsp = &(rspiocb->iocb); + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_ADISC_SND; + spin_unlock_irq(phba->host->host_lock); + + /* Since ndlp can be freed in the disc state machine, note if this node + * is being used during discovery. + */ + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + + /* ADISC completes to NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0104 ADISC completes to NPort x%x " + "Data: x%x x%x x%x x%x\n", + phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus, + irsp->un.ulpWord[4], disc, phba->num_disc_nodes); + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); + goto out; + } + + if (irsp->ulpStatus) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + if (disc) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); + lpfc_set_disctmo(phba); + } + goto out; + } + /* ADISC failed */ + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) || + (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) { + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + } + else { + lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_ADISC); + } + } else { + /* Good status, call state machine */ + lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_ADISC); + } + + if (disc && phba->num_disc_nodes) { + /* Check to see if there are more ADISCs to be sent */ + lpfc_more_adisc(phba); + + /* Check to see if we are done with ADISC authentication */ + if (phba->num_disc_nodes == 0) { + lpfc_can_disctmo(phba); + /* If we get here, there is nothing left to wait for */ + if ((phba->hba_state < LPFC_HBA_READY) && + (phba->hba_state != LPFC_CLEAR_LA)) { + /* Link up discovery */ + if ((mbox = mempool_alloc(phba->mbox_mem_pool, + GFP_KERNEL))) { + phba->hba_state = LPFC_CLEAR_LA; + lpfc_clear_la(phba, mbox); + mbox->mbox_cmpl = + lpfc_mbx_cmpl_clear_la; + rc = lpfc_sli_issue_mbox + (phba, mbox, + (MBX_NOWAIT | MBX_STOP_IOCB)); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, + phba->mbox_mem_pool); + lpfc_disc_flush_list(phba); + psli->ring[(psli->ip_ring)]. + flag &= + ~LPFC_STOP_IOCB_EVENT; + psli->ring[(psli->fcp_ring)]. + flag &= + ~LPFC_STOP_IOCB_EVENT; + psli->ring[(psli->next_ring)]. + flag &= + ~LPFC_STOP_IOCB_EVENT; + phba->hba_state = + LPFC_HBA_READY; + } + } + } else { + lpfc_rscn_disc(phba); + } + } + } + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(phba->host->host_lock); +out: + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, + uint8_t retry) +{ + ADISC *ap; + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = (sizeof (uint32_t) + sizeof (ADISC)); + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_ADISC)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + /* For ADISC request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_ADISC; + pcmd += sizeof (uint32_t); + + /* Fill in ADISC payload */ + ap = (ADISC *) pcmd; + ap->hardAL_PA = phba->fc_pref_ALPA; + memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name)); + memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name)); + ap->DID = be32_to_cpu(phba->fc_myDID); + + phba->fc_stat.elsXmitADISC++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_ADISC_SND; + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + ndlp->nlp_flag &= ~NLP_ADISC_SND; + spin_unlock_irq(phba->host->host_lock); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + return (0); +} + +static void +lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + struct lpfc_sli *psli; + struct lpfc_nodelist *ndlp; + + psli = &phba->sli; + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->context_un.rsp_iocb = rspiocb; + + irsp = &(rspiocb->iocb); + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_LOGO_SND; + spin_unlock_irq(phba->host->host_lock); + + /* LOGO completes to NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0105 LOGO completes to NPort x%x " + "Data: x%x x%x x%x\n", + phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus, + irsp->un.ulpWord[4], phba->num_disc_nodes); + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) + goto out; + + if (irsp->ulpStatus) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + goto out; + } + /* LOGO failed */ + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) || + (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) { + goto out; + } + else { + lpfc_disc_state_machine(phba, ndlp, cmdiocb, + NLP_EVT_CMPL_LOGO); + } + } else { + /* Good status, call state machine */ + lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); + + if (ndlp->nlp_flag & NLP_DELAY_TMO) { + lpfc_unreg_rpi(phba, ndlp); + } + } + +out: + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, + uint8_t retry) +{ + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; + + cmdsize = 2 * (sizeof (uint32_t) + sizeof (struct lpfc_name)); + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_LOGO)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; + pcmd += sizeof (uint32_t); + + /* Fill in LOGO payload */ + *((uint32_t *) (pcmd)) = be32_to_cpu(phba->fc_myDID); + pcmd += sizeof (uint32_t); + memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name)); + + phba->fc_stat.elsXmitLOGO++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_logo; + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag |= NLP_LOGO_SND; + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + ndlp->nlp_flag &= ~NLP_LOGO_SND; + spin_unlock_irq(phba->host->host_lock); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + return (0); +} + +static void +lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + + irsp = &rspiocb->iocb; + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_ELS, + "%d:0106 ELS cmd tag x%x completes Data: x%x x%x\n", + phba->brd_no, + irsp->ulpIoTag, irsp->ulpStatus, irsp->un.ulpWord[4]); + + /* Check to see if link went down during discovery */ + lpfc_els_chk_latt(phba); + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry) +{ + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + struct lpfc_nodelist *ndlp; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + cmdsize = (sizeof (uint32_t) + sizeof (SCR)); + if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) == 0) { + return (1); + } + + lpfc_nlp_init(phba, ndlp, nportid); + + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_SCR)) == 0) { + mempool_free( ndlp, phba->nlp_mem_pool); + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = ELS_CMD_SCR; + pcmd += sizeof (uint32_t); + + /* For SCR, remainder of payload is SCR parameter page */ + memset(pcmd, 0, sizeof (SCR)); + ((SCR *) pcmd)->Function = SCR_FUNC_FULL; + + phba->fc_stat.elsXmitSCR++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; + spin_lock_irq(phba->host->host_lock); + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + spin_unlock_irq(phba->host->host_lock); + mempool_free( ndlp, phba->nlp_mem_pool); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + mempool_free( ndlp, phba->nlp_mem_pool); + return (0); +} + +static int +lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry) +{ + IOCB_t *icmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + FARP *fp; + uint8_t *pcmd; + uint32_t *lp; + uint16_t cmdsize; + struct lpfc_nodelist *ondlp; + struct lpfc_nodelist *ndlp; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + cmdsize = (sizeof (uint32_t) + sizeof (FARP)); + if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) == 0) { + return (1); + } + lpfc_nlp_init(phba, ndlp, nportid); + + if ((elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, + ndlp, ELS_CMD_RNID)) == 0) { + mempool_free( ndlp, phba->nlp_mem_pool); + return (1); + } + + icmd = &elsiocb->iocb; + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = ELS_CMD_FARPR; + pcmd += sizeof (uint32_t); + + /* Fill in FARPR payload */ + fp = (FARP *) (pcmd); + memset(fp, 0, sizeof (FARP)); + lp = (uint32_t *) pcmd; + *lp++ = be32_to_cpu(nportid); + *lp++ = be32_to_cpu(phba->fc_myDID); + fp->Rflags = 0; + fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); + + memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name)); + memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name)); + if ((ondlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, nportid))) { + memcpy(&fp->OportName, &ondlp->nlp_portname, + sizeof (struct lpfc_name)); + memcpy(&fp->OnodeName, &ondlp->nlp_nodename, + sizeof (struct lpfc_name)); + } + + phba->fc_stat.elsXmitFARPR++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; + spin_lock_irq(phba->host->host_lock); + if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) { + spin_unlock_irq(phba->host->host_lock); + mempool_free( ndlp, phba->nlp_mem_pool); + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + spin_unlock_irq(phba->host->host_lock); + mempool_free( ndlp, phba->nlp_mem_pool); + return (0); +} + +void +lpfc_els_retry_delay(unsigned long ptr) +{ + struct lpfc_nodelist *ndlp; + struct lpfc_hba *phba; + unsigned long iflag; + struct lpfc_work_evt *evtp; + + ndlp = (struct lpfc_nodelist *)ptr; + phba = ndlp->nlp_phba; + evtp = &ndlp->els_retry_evt; + + spin_lock_irqsave(phba->host->host_lock, iflag); + if (!list_empty(&evtp->evt_listp)) { + spin_unlock_irqrestore(phba->host->host_lock, iflag); + return; + } + + evtp->evt_arg1 = ndlp; + evtp->evt = LPFC_EVT_ELS_RETRY; + list_add_tail(&evtp->evt_listp, &phba->work_list); + if (phba->work_wait) + wake_up(phba->work_wait); + + spin_unlock_irqrestore(phba->host->host_lock, iflag); + return; +} + +void +lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba; + uint32_t cmd; + uint32_t did; + uint8_t retry; + + phba = ndlp->nlp_phba; + spin_lock_irq(phba->host->host_lock); + did = (uint32_t) (ndlp->nlp_DID); + cmd = (uint32_t) (ndlp->nlp_last_elscmd); + + if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { + spin_unlock_irq(phba->host->host_lock); + return; + } + + ndlp->nlp_flag &= ~NLP_DELAY_TMO; + spin_unlock_irq(phba->host->host_lock); + retry = ndlp->nlp_retry; + + switch (cmd) { + case ELS_CMD_FLOGI: + lpfc_issue_els_flogi(phba, ndlp, retry); + break; + case ELS_CMD_PLOGI: + ndlp->nlp_state = NLP_STE_PLOGI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST); + lpfc_issue_els_plogi(phba, ndlp, retry); + break; + case ELS_CMD_ADISC: + ndlp->nlp_state = NLP_STE_ADISC_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST); + lpfc_issue_els_adisc(phba, ndlp, retry); + break; + case ELS_CMD_PRLI: + ndlp->nlp_state = NLP_STE_PRLI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST); + lpfc_issue_els_prli(phba, ndlp, retry); + break; + case ELS_CMD_LOGO: + ndlp->nlp_state = NLP_STE_NPR_NODE; + lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST); + lpfc_issue_els_logo(phba, ndlp, retry); + break; + } + return; +} + +static int +lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + IOCB_t *irsp; + struct lpfc_dmabuf *pcmd; + struct lpfc_nodelist *ndlp; + uint32_t *elscmd; + struct ls_rjt stat; + int retry, maxretry; + int delay; + uint32_t cmd; + + retry = 0; + delay = 0; + maxretry = lpfc_max_els_tries; + irsp = &rspiocb->iocb; + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + cmd = 0; + /* Note: context2 may be 0 for internal driver abort + * of delays ELS command. + */ + + if (pcmd && pcmd->virt) { + elscmd = (uint32_t *) (pcmd->virt); + cmd = *elscmd++; + } + + switch (irsp->ulpStatus) { + case IOSTAT_FCP_RSP_ERROR: + case IOSTAT_REMOTE_STOP: + break; + + case IOSTAT_LOCAL_REJECT: + switch ((irsp->un.ulpWord[4] & 0xff)) { + case IOERR_LOOP_OPEN_FAILURE: + if (cmd == ELS_CMD_PLOGI) { + if (cmdiocb->retry == 0) { + delay = 1; + } + } + retry = 1; + break; + + case IOERR_SEQUENCE_TIMEOUT: + retry = 1; + if ((cmd == ELS_CMD_FLOGI) + && (phba->fc_topology != TOPOLOGY_LOOP)) { + delay = 1; + maxretry = 48; + } + break; + + case IOERR_NO_RESOURCES: + if (cmd == ELS_CMD_PLOGI) { + delay = 1; + } + retry = 1; + break; + + case IOERR_INVALID_RPI: + retry = 1; + break; + } + break; + + case IOSTAT_NPORT_RJT: + case IOSTAT_FABRIC_RJT: + if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) { + retry = 1; + break; + } + break; + + case IOSTAT_NPORT_BSY: + case IOSTAT_FABRIC_BSY: + retry = 1; + break; + + case IOSTAT_LS_RJT: + stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]); + /* Added for Vendor specifc support + * Just keep retrying for these Rsn / Exp codes + */ + switch (stat.un.b.lsRjtRsnCode) { + case LSRJT_UNABLE_TPC: + if (stat.un.b.lsRjtRsnCodeExp == + LSEXP_CMD_IN_PROGRESS) { + if (cmd == ELS_CMD_PLOGI) { + delay = 1; + maxretry = 48; + } + retry = 1; + break; + } + if (cmd == ELS_CMD_PLOGI) { + delay = 1; + maxretry = lpfc_max_els_tries + 1; + retry = 1; + break; + } + break; + + case LSRJT_LOGICAL_BSY: + if (cmd == ELS_CMD_PLOGI) { + delay = 1; + maxretry = 48; + } + retry = 1; + break; + } + break; + + case IOSTAT_INTERMED_RSP: + case IOSTAT_BA_RJT: + break; + + default: + break; + } + + if (ndlp->nlp_DID == FDMI_DID) { + retry = 1; + } + + if ((++cmdiocb->retry) >= maxretry) { + phba->fc_stat.elsRetryExceeded++; + retry = 0; + } + + if (retry) { + + /* Retry ELS command <elsCmd> to remote NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0107 Retry ELS command x%x to remote " + "NPORT x%x Data: x%x x%x\n", + phba->brd_no, + cmd, ndlp->nlp_DID, cmdiocb->retry, delay); + + if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) { + /* If discovery / RSCN timer is running, reset it */ + if (timer_pending(&phba->fc_disctmo) || + (phba->fc_flag & FC_RSCN_MODE)) { + lpfc_set_disctmo(phba); + } + } + + phba->fc_stat.elsXmitRetry++; + if (delay) { + phba->fc_stat.elsDelayRetry++; + ndlp->nlp_retry = cmdiocb->retry; + + mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); + ndlp->nlp_flag |= NLP_DELAY_TMO; + + ndlp->nlp_state = NLP_STE_NPR_NODE; + lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST); + ndlp->nlp_last_elscmd = cmd; + + return (1); + } + switch (cmd) { + case ELS_CMD_FLOGI: + lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry); + return (1); + case ELS_CMD_PLOGI: + ndlp->nlp_state = NLP_STE_PLOGI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST); + lpfc_issue_els_plogi(phba, ndlp, cmdiocb->retry); + return (1); + case ELS_CMD_ADISC: + ndlp->nlp_state = NLP_STE_ADISC_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST); + lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry); + return (1); + case ELS_CMD_PRLI: + ndlp->nlp_state = NLP_STE_PRLI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST); + lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry); + return (1); + case ELS_CMD_LOGO: + ndlp->nlp_state = NLP_STE_NPR_NODE; + lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST); + lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry); + return (1); + } + } + + /* No retry ELS command <elsCmd> to remote NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0108 No retry ELS command x%x to remote NPORT x%x " + "Data: x%x x%x\n", + phba->brd_no, + cmd, ndlp->nlp_DID, cmdiocb->retry, ndlp->nlp_flag); + + return (0); +} + +int +lpfc_els_free_iocb(struct lpfc_hba * phba, struct lpfc_iocbq * elsiocb) +{ + struct lpfc_dmabuf *buf_ptr, *buf_ptr1; + + /* context2 = cmd, context2->next = rsp, context3 = bpl */ + if (elsiocb->context2) { + buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; + /* Free the response before processing the command. */ + if (!list_empty(&buf_ptr1->list)) { + list_remove_head(&buf_ptr1->list, buf_ptr, + struct lpfc_dmabuf, + list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); + kfree(buf_ptr1); + } + + if (elsiocb->context3) { + buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + spin_lock_irq(phba->host->host_lock); + list_add_tail(&elsiocb->list, &phba->lpfc_iocb_list); + spin_unlock_irq(phba->host->host_lock); + return 0; +} + +static void +lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + struct lpfc_nodelist *ndlp; + + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + + /* ACC to LOGO completes to NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0109 ACC to LOGO completes to NPort x%x " + "Data: x%x x%x x%x\n", + phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag, + ndlp->nlp_state, ndlp->nlp_rpi); + + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_LOGO_ACC; + spin_unlock_irq(phba->host->host_lock); + + switch (ndlp->nlp_state) { + case NLP_STE_UNUSED_NODE: /* node is just allocated */ + lpfc_nlp_list(phba, ndlp, NLP_NO_LIST); + break; + case NLP_STE_NPR_NODE: /* NPort Recovery mode */ + lpfc_unreg_rpi(phba, ndlp); + break; + default: + break; + } + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +static void +lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_iocbq * rspiocb) +{ + struct lpfc_nodelist *ndlp; + LPFC_MBOXQ_t *mbox = NULL; + + ndlp = (struct lpfc_nodelist *) cmdiocb->context1; + if (cmdiocb->context_un.mbox) + mbox = cmdiocb->context_un.mbox; + + + /* Check to see if link went down during discovery */ + if ((lpfc_els_chk_latt(phba)) || !ndlp) { + if (mbox) { + mempool_free( mbox, phba->mbox_mem_pool); + } + goto out; + } + + /* ELS response tag <ulpIoTag> completes */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0110 ELS response tag x%x completes " + "Data: x%x x%x x%x x%x x%x x%x\n", + phba->brd_no, + cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus, + rspiocb->iocb.un.ulpWord[4], ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + + if (mbox) { + if ((rspiocb->iocb.ulpStatus == 0) + && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { + /* set_slim mailbox command needs to execute first, + * queue this command to be processed later. + */ + lpfc_unreg_rpi(phba, ndlp); + mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; + mbox->context2 = ndlp; + ndlp->nlp_state = NLP_STE_REG_LOGIN_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_REGLOGIN_LIST); + if (lpfc_sli_issue_mbox(phba, mbox, + (MBX_NOWAIT | MBX_STOP_IOCB)) + != MBX_NOT_FINISHED) { + goto out; + } + /* NOTE: we should have messages for unsuccessful + reglogin */ + mempool_free( mbox, phba->mbox_mem_pool); + } else { + mempool_free( mbox, phba->mbox_mem_pool); + if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) { + lpfc_nlp_list(phba, ndlp, NLP_NO_LIST); + } + } + } +out: + if (ndlp) { + spin_lock_irq(phba->host->host_lock); + ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN; + spin_unlock_irq(phba->host->host_lock); + } + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +int +lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag, + struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp, + LPFC_MBOXQ_t * mbox, uint8_t newnode) +{ + IOCB_t *icmd; + IOCB_t *oldcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + oldcmd = &oldiocb->iocb; + + switch (flag) { + case ELS_CMD_ACC: + cmdsize = sizeof (uint32_t); + if ((elsiocb = + lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, ELS_CMD_ACC)) == 0) { + return (1); + } + icmd = &elsiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof (uint32_t); + break; + case ELS_CMD_PLOGI: + cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t)); + if ((elsiocb = + lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, ELS_CMD_ACC)) == 0) { + return (1); + } + icmd = &elsiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + if (mbox) + elsiocb->context_un.mbox = mbox; + + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof (uint32_t); + memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm)); + break; + default: + return (1); + } + + if (newnode) + elsiocb->context1 = NULL; + + /* Xmit ELS ACC response tag <ulpIoTag> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0128 Xmit ELS ACC response tag x%x " + "Data: x%x x%x x%x x%x x%x\n", + phba->brd_no, + elsiocb->iocb.ulpIoTag, + elsiocb->iocb.ulpContext, ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + + if (ndlp->nlp_flag & NLP_LOGO_ACC) { + elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc; + } else { + elsiocb->iocb_cmpl = lpfc_cmpl_els_acc; + } + + phba->fc_stat.elsXmitACC++; + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +int +lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError, + struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp) +{ + IOCB_t *icmd; + IOCB_t *oldcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = 2 * sizeof (uint32_t); + if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, ELS_CMD_LS_RJT)) == 0) { + return (1); + } + + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; + pcmd += sizeof (uint32_t); + *((uint32_t *) (pcmd)) = rejectError; + + /* Xmit ELS RJT <err> response tag <ulpIoTag> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0129 Xmit ELS RJT x%x response tag x%x " + "Data: x%x x%x x%x x%x x%x\n", + phba->brd_no, + rejectError, elsiocb->iocb.ulpIoTag, + elsiocb->iocb.ulpContext, ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + + phba->fc_stat.elsXmitLSRJT++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_acc; + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +int +lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba, + struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp) +{ + ADISC *ap; + IOCB_t *icmd; + IOCB_t *oldcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = sizeof (uint32_t) + sizeof (ADISC); + if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, ELS_CMD_ACC)) == 0) { + return (1); + } + + /* Xmit ADISC ACC response tag <ulpIoTag> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0130 Xmit ADISC ACC response tag x%x " + "Data: x%x x%x x%x x%x x%x\n", + phba->brd_no, + elsiocb->iocb.ulpIoTag, + elsiocb->iocb.ulpContext, ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof (uint32_t); + + ap = (ADISC *) (pcmd); + ap->hardAL_PA = phba->fc_pref_ALPA; + memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name)); + memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name)); + ap->DID = be32_to_cpu(phba->fc_myDID); + + phba->fc_stat.elsXmitACC++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_acc; + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +int +lpfc_els_rsp_prli_acc(struct lpfc_hba * phba, + struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp) +{ + PRLI *npr; + lpfc_vpd_t *vpd; + IOCB_t *icmd; + IOCB_t *oldcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; /* ELS ring */ + + cmdsize = sizeof (uint32_t) + sizeof (PRLI); + if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, + (ELS_CMD_ACC | + (ELS_CMD_PRLI & ~ELS_RSP_MASK)))) == + 0) { + return (1); + } + + /* Xmit PRLI ACC response tag <ulpIoTag> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0131 Xmit PRLI ACC response tag x%x " + "Data: x%x x%x x%x x%x x%x\n", + phba->brd_no, + elsiocb->iocb.ulpIoTag, + elsiocb->iocb.ulpContext, ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); + pcmd += sizeof (uint32_t); + + /* For PRLI, remainder of payload is PRLI parameter page */ + memset(pcmd, 0, sizeof (PRLI)); + + npr = (PRLI *) pcmd; + vpd = &phba->vpd; + /* + * If our firmware version is 3.20 or later, + * set the following bits for FC-TAPE support. + */ + if (vpd->rev.feaLevelHigh >= 0x02) { + npr->ConfmComplAllowed = 1; + npr->Retry = 1; + npr->TaskRetryIdReq = 1; + } + + npr->acceptRspCode = PRLI_REQ_EXECUTED; + npr->estabImagePair = 1; + npr->readXferRdyDis = 1; + npr->ConfmComplAllowed = 1; + + npr->prliType = PRLI_FCP_TYPE; + npr->initiatorFunc = 1; + + phba->fc_stat.elsXmitACC++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_acc; + + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +static int +lpfc_els_rsp_rnid_acc(struct lpfc_hba * phba, + uint8_t format, + struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp) +{ + RNID *rn; + IOCB_t *icmd; + IOCB_t *oldcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + psli = &phba->sli; + pring = &psli->ring[LPFC_ELS_RING]; + + cmdsize = sizeof (uint32_t) + sizeof (uint32_t) + + (2 * sizeof (struct lpfc_name)); + if (format) + cmdsize += sizeof (RNID_TOP_DISC); + + if ((elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, + ndlp, ELS_CMD_ACC)) == 0) { + return (1); + } + + /* Xmit RNID ACC response tag <ulpIoTag> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0132 Xmit RNID ACC response tag x%x " + "Data: x%x\n", + phba->brd_no, + elsiocb->iocb.ulpIoTag, + elsiocb->iocb.ulpContext); + + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri */ + pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); + + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof (uint32_t); + + memset(pcmd, 0, sizeof (RNID)); + rn = (RNID *) (pcmd); + rn->Format = format; + rn->CommonLen = (2 * sizeof (struct lpfc_name)); + memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name)); + memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name)); + switch (format) { + case 0: + rn->SpecificLen = 0; + break; + case RNID_TOPOLOGY_DISC: + rn->SpecificLen = sizeof (RNID_TOP_DISC); + memcpy(&rn->un.topologyDisc.portName, + &phba->fc_portname, sizeof (struct lpfc_name)); + rn->un.topologyDisc.unitType = RNID_HBA; + rn->un.topologyDisc.physPort = 0; + rn->un.topologyDisc.attachedNodes = 0; + break; + default: + rn->CommonLen = 0; + rn->SpecificLen = 0; + break; + } + + phba->fc_stat.elsXmitACC++; + elsiocb->iocb_cmpl = lpfc_cmpl_els_acc; + elsiocb->context1 = NULL; /* Don't need ndlp for cmpl, + * it could be freed */ + + spin_lock_irq(phba->host->host_lock); + rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0); + spin_unlock_irq(phba->host->host_lock); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + return (1); + } + return (0); +} + +int +lpfc_els_disc_adisc(struct lpfc_hba * phba) +{ + int sentadisc; + struct lpfc_nodelist *ndlp, *next_ndlp; + + sentadisc = 0; + /* go thru NPR list and issue any remaining ELS ADISCs */ + list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list, + nlp_listp) { + if (ndlp->nlp_flag & NLP_NPR_2B_DISC) { + if (ndlp->nlp_flag & NLP_NPR_ADISC) { + ndlp->nlp_flag &= ~NLP_NPR_ADISC; + ndlp->nlp_state = NLP_STE_ADISC_ISSUE; + lpfc_nlp_list(phba, ndlp, + NLP_ADISC_LIST); + lpfc_issue_els_adisc(phba, ndlp, 0); + sentadisc++; + phba->num_disc_nodes++; + if (phba->num_disc_nodes >= + phba->cfg_discovery_threads) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_NLP_MORE; + spin_unlock_irq(phba->host->host_lock); + break; + } + } + } + } + if (sentadisc == 0) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~FC_NLP_MORE; + spin_unlock_irq(phba->host->host_lock); + } + return(sentadisc); +} + +int +lpfc_els_disc_plogi(struct lpfc_hba * phba) +{ + int sentplogi; + struct lpfc_nodelist *ndlp, *next_ndlp; + + sentplogi = 0; + /* go thru NPR list and issue any remaining ELS PLOGIs */ + list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list, + nlp_listp) { + if ((ndlp->nlp_flag & NLP_NPR_2B_DISC) && + (!(ndlp->nlp_flag & NLP_DELAY_TMO))) { + if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { + ndlp->nlp_state = NLP_STE_PLOGI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST); + lpfc_issue_els_plogi(phba, ndlp, 0); + sentplogi++; + phba->num_disc_nodes++; + if (phba->num_disc_nodes >= + phba->cfg_discovery_threads) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_NLP_MORE; + spin_unlock_irq(phba->host->host_lock); + break; + } + } + } + } + if (sentplogi == 0) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~FC_NLP_MORE; + spin_unlock_irq(phba->host->host_lock); + } + return(sentplogi); +} + +int +lpfc_els_flush_rscn(struct lpfc_hba * phba) +{ + struct lpfc_dmabuf *mp; + int i; + + for (i = 0; i < phba->fc_rscn_id_cnt; i++) { + mp = phba->fc_rscn_id_list[i]; + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + phba->fc_rscn_id_list[i] = NULL; + } + phba->fc_rscn_id_cnt = 0; + spin_lock_irq(phba->host->host_lock); + phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); + spin_unlock_irq(phba->host->host_lock); + lpfc_can_disctmo(phba); + return (0); +} + +int +lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did) +{ + D_ID ns_did; + D_ID rscn_did; + struct lpfc_dmabuf *mp; + uint32_t *lp; + uint32_t payload_len, cmd, i, match; + + ns_did.un.word = did; + match = 0; + + /* Never match fabric nodes for RSCNs */ + if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) + return(0); + + /* If we are doing a FULL RSCN rediscovery, match everything */ + if (phba->fc_flag & FC_RSCN_DISCOVERY) { + return (did); + } + + for (i = 0; i < phba->fc_rscn_id_cnt; i++) { + mp = phba->fc_rscn_id_list[i]; + lp = (uint32_t *) mp->virt; + cmd = *lp++; + payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */ + payload_len -= sizeof (uint32_t); /* take off word 0 */ + while (payload_len) { + rscn_did.un.word = *lp++; + rscn_did.un.word = be32_to_cpu(rscn_did.un.word); + payload_len -= sizeof (uint32_t); + switch (rscn_did.un.b.resv) { + case 0: /* Single N_Port ID effected */ + if (ns_did.un.word == rscn_did.un.word) { + match = did; + } + break; + case 1: /* Whole N_Port Area effected */ + if ((ns_did.un.b.domain == rscn_did.un.b.domain) + && (ns_did.un.b.area == rscn_did.un.b.area)) + { + match = did; + } + break; + case 2: /* Whole N_Port Domain effected */ + if (ns_did.un.b.domain == rscn_did.un.b.domain) + { + match = did; + } + break; + case 3: /* Whole Fabric effected */ + match = did; + break; + default: + /* Unknown Identifier in RSCN list */ + lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, + "%d:0217 Unknown Identifier in " + "RSCN payload Data: x%x\n", + phba->brd_no, rscn_did.un.word); + break; + } + if (match) { + break; + } + } + } + return (match); +} + +static int +lpfc_rscn_recovery_check(struct lpfc_hba * phba) +{ + struct lpfc_nodelist *ndlp = NULL, *next_ndlp; + struct list_head *listp; + struct list_head *node_list[7]; + int i; + + /* Look at all nodes effected by pending RSCNs and move + * them to NPR list. + */ + node_list[0] = &phba->fc_npr_list; /* MUST do this list first */ + node_list[1] = &phba->fc_nlpmap_list; + node_list[2] = &phba->fc_nlpunmap_list; + node_list[3] = &phba->fc_prli_list; + node_list[4] = &phba->fc_reglogin_list; + node_list[5] = &phba->fc_adisc_list; + node_list[6] = &phba->fc_plogi_list; + for (i = 0; i < 7; i++) { + listp = node_list[i]; + if (list_empty(listp)) + continue; + + list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) { + if (!(lpfc_rscn_payload_check(phba, ndlp->nlp_DID))) + continue; + + lpfc_disc_state_machine(phba, ndlp, NULL, + NLP_EVT_DEVICE_RECOVERY); + if (ndlp->nlp_flag & NLP_DELAY_TMO) { + ndlp->nlp_flag &= ~NLP_DELAY_TMO; + del_timer_sync(&ndlp->nlp_delayfunc); + if (!list_empty(&ndlp-> + els_retry_evt.evt_listp)) + list_del_init(&ndlp-> + els_retry_evt.evt_listp); + } + } + } + return (0); +} + +static int +lpfc_els_rcv_rscn(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, + struct lpfc_nodelist * ndlp, uint8_t newnode) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + uint32_t payload_len, cmd; + + icmd = &cmdiocb->iocb; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */ + payload_len -= sizeof (uint32_t); /* take off word 0 */ + cmd &= ELS_CMD_MASK; + + /* RSCN received */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_DISCOVERY, + "%d:0214 RSCN received Data: x%x x%x x%x x%x\n", + phba->brd_no, + phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt); + + /* If we are about to begin discovery, just ACC the RSCN. + * Discovery processing will satisfy it. + */ + if (phba->hba_state < LPFC_NS_QRY) { + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, + newnode); + return (0); + } + + /* If we are already processing an RSCN, save the received + * RSCN payload buffer, cmdiocb->context2 to process later. + */ + if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { + if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) && + !(phba->fc_flag & FC_RSCN_DISCOVERY)) { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_RSCN_MODE; + spin_unlock_irq(phba->host->host_lock); + phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd; + + /* If we zero, cmdiocb->context2, the calling + * routine will not try to free it. + */ + cmdiocb->context2 = NULL; + + /* Deferred RSCN */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "%d:0235 Deferred RSCN " + "Data: x%x x%x x%x\n", + phba->brd_no, phba->fc_rscn_id_cnt, + phba->fc_flag, phba->hba_state); + } else { + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_RSCN_DISCOVERY; + spin_unlock_irq(phba->host->host_lock); + /* ReDiscovery RSCN */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "%d:0234 ReDiscovery RSCN " + "Data: x%x x%x x%x\n", + phba->brd_no, phba->fc_rscn_id_cnt, + phba->fc_flag, phba->hba_state); + } + /* Send back ACC */ + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, + newnode); + + /* send RECOVERY event for ALL nodes that match RSCN payload */ + lpfc_rscn_recovery_check(phba); + return (0); + } + + phba->fc_flag |= FC_RSCN_MODE; + phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd; + /* + * If we zero, cmdiocb->context2, the calling routine will + * not try to free it. + */ + cmdiocb->context2 = NULL; + + lpfc_set_disctmo(phba); + + /* Send back ACC */ + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode); + + /* send RECOVERY event for ALL nodes that match RSCN payload */ + lpfc_rscn_recovery_check(phba); + + return (lpfc_els_handle_rscn(phba)); +} + +int +lpfc_els_handle_rscn(struct lpfc_hba * phba) +{ + struct lpfc_nodelist *ndlp; + + /* Start timer for RSCN processing */ + lpfc_set_disctmo(phba); + + /* RSCN processed */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_DISCOVERY, + "%d:0215 RSCN processed Data: x%x x%x x%x x%x\n", + phba->brd_no, + phba->fc_flag, 0, phba->fc_rscn_id_cnt, + phba->hba_state); + + /* To process RSCN, first compare RSCN data with NameServer */ + phba->fc_ns_retry = 0; + if ((ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED, + NameServer_DID))) { + /* Good ndlp, issue CT Request to NameServer */ + if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) { + /* Wait for NameServer query cmpl before we can + continue */ + return (1); + } + } else { + /* If login to NameServer does not exist, issue one */ + /* Good status, issue PLOGI to NameServer */ + if ((ndlp = + lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID))) { + /* Wait for NameServer login cmpl before we can + continue */ + return (1); + } + if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) + == 0) { + lpfc_els_flush_rscn(phba); + return (0); + } else { + lpfc_nlp_init(phba, ndlp, NameServer_DID); + ndlp->nlp_type |= NLP_FABRIC; + ndlp->nlp_state = NLP_STE_PLOGI_ISSUE; + lpfc_issue_els_plogi(phba, ndlp, 0); + /* Wait for NameServer login cmpl before we can + continue */ + return (1); + } + } + + lpfc_els_flush_rscn(phba); + return (0); +} + +static int +lpfc_els_rcv_flogi(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, + struct lpfc_nodelist * ndlp, uint8_t newnode) +{ + struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + uint32_t *lp = (uint32_t *) pcmd->virt; + IOCB_t *icmd = &cmdiocb->iocb; + struct serv_parm *sp; + LPFC_MBOXQ_t *mbox; + struct ls_rjt stat; + uint32_t cmd, did; + int rc; + + cmd = *lp++; + sp = (struct serv_parm *) lp; + + /* FLOGI received */ + + lpfc_set_disctmo(phba); + + if (phba->fc_topology == TOPOLOGY_LOOP) { + /* We should never receive a FLOGI in loop mode, ignore it */ + did = icmd->un.elsreq64.remoteID; + + /* An FLOGI ELS command <elsCmd> was received from DID <did> in + Loop Mode */ + lpfc_printf_log(phba, KERN_ERR, LOG_ELS, + "%d:0113 An FLOGI ELS command x%x was received " + "from DID x%x in Loop Mode\n", + phba->brd_no, cmd, did); + return (1); + } + + did = Fabric_DID; + + if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) { + /* For a FLOGI we accept, then if our portname is greater + * then the remote portname we initiate Nport login. + */ + + rc = memcmp(&phba->fc_portname, &sp->portName, + sizeof (struct lpfc_name)); + + if (!rc) { + if ((mbox = mempool_alloc(phba->mbox_mem_pool, + GFP_KERNEL)) == 0) { + return (1); + } + lpfc_linkdown(phba); + lpfc_init_link(phba, mbox, + phba->cfg_topology, + phba->cfg_link_speed); + mbox->mb.un.varInitLnk.lipsr_AL_PA = 0; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox + (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB)); + if (rc == MBX_NOT_FINISHED) { + mempool_free( mbox, phba->mbox_mem_pool); + } + return (1); + } + else if (rc > 0) { /* greater than */ + spin_lock_irq(phba->host->host_lock); + phba->fc_flag |= FC_PT2PT_PLOGI; + spin_unlock_irq(phba->host->host_lock); + } + phba->fc_flag |= FC_PT2PT; + phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + } else { + /* Reject this request because invalid parameters */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp); + return (1); + } + + /* Send back ACC */ + lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode); + + return (0); +} + +static int +lpfc_els_rcv_rnid(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + RNID *rn; + struct ls_rjt stat; + uint32_t cmd, did; + + icmd = &cmdiocb->iocb; + did = icmd->un.elsreq64.remoteID; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + rn = (RNID *) lp; + + /* RNID received */ + + switch (rn->Format) { + case 0: + case RNID_TOPOLOGY_DISC: + /* Send back ACC */ + lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp); + break; + default: + /* Reject this request because format not supported */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp); + } + return (0); +} + +static int +lpfc_els_rcv_rrq(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_nodelist * ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + struct lpfc_sli_ring *pring; + struct lpfc_sli *psli; + RRQ *rrq; + uint32_t cmd, did; + + psli = &phba->sli; + pring = &psli->ring[LPFC_FCP_RING]; + icmd = &cmdiocb->iocb; + did = icmd->un.elsreq64.remoteID; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + rrq = (RRQ *) lp; + + /* RRQ received */ + /* Get oxid / rxid from payload and abort it */ + spin_lock_irq(phba->host->host_lock); + if ((rrq->SID == be32_to_cpu(phba->fc_myDID))) { + lpfc_sli_abort_iocb(phba, pring, 0, 0, rrq->Oxid, + LPFC_CTX_CTX); + } else { + lpfc_sli_abort_iocb(phba, pring, 0, 0, rrq->Rxid, + LPFC_CTX_CTX); + } + + spin_unlock_irq(phba->host->host_lock); + /* ACCEPT the rrq request */ + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0); + + return 0; +} + +static int +lpfc_els_rcv_farp(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + FARP *fp; + uint32_t cmd, cnt, did; + + icmd = &cmdiocb->iocb; + did = icmd->un.elsreq64.remoteID; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + fp = (FARP *) lp; + + /* FARP-REQ received from DID <did> */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_IP, + "%d:0601 FARP-REQ received from DID x%x\n", + phba->brd_no, did); + + /* We will only support match on WWPN or WWNN */ + if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { + return (0); + } + + cnt = 0; + /* If this FARP command is searching for my portname */ + if (fp->Mflags & FARP_MATCH_PORT) { + if (memcmp(&fp->RportName, &phba->fc_portname, + sizeof (struct lpfc_name)) == 0) + cnt = 1; + } + + /* If this FARP command is searching for my nodename */ + if (fp->Mflags & FARP_MATCH_NODE) { + if (memcmp(&fp->RnodeName, &phba->fc_nodename, + sizeof (struct lpfc_name)) == 0) + cnt = 1; + } + + if (cnt) { + if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || + (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { + /* Log back into the node before sending the FARP. */ + if (fp->Rflags & FARP_REQUEST_PLOGI) { + ndlp->nlp_state = NLP_STE_PLOGI_ISSUE; + lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST); + lpfc_issue_els_plogi(phba, ndlp, 0); + } + + /* Send a FARP response to that node */ + if (fp->Rflags & FARP_REQUEST_FARPR) { + lpfc_issue_els_farpr(phba, did, 0); + } + } + } + return (0); +} + +static int +lpfc_els_rcv_farpr(struct lpfc_hba * phba, + struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + uint32_t cmd, did; + + icmd = &cmdiocb->iocb; + did = icmd->un.elsreq64.remoteID; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + /* FARP-RSP received from DID <did> */ + lpfc_printf_log(phba, + KERN_INFO, + LOG_IP, + "%d:0600 FARP-RSP received from DID x%x\n", + phba->brd_no, did); + + /* ACCEPT the Farp resp request */ + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0); + + return 0; +} + +static int +lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, + struct lpfc_nodelist * ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + IOCB_t *icmd; + FAN *fp; + uint32_t cmd, did; + + icmd = &cmdiocb->iocb; + did = icmd->un.elsreq64.remoteID; + pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; + lp = (uint32_t *) pcmd->virt; + + cmd = *lp++; + fp = (FAN *) lp; + + /* FAN received */ + + /* ACCEPT the FAN request */ + lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0); + + if (phba->hba_state == LPFC_LOCAL_CFG_LINK) { + /* The discovery state machine needs to take a different + * action if this node has switched fabrics + */ + if ((memcmp(&fp->FportName, &phba->fc_fabparam.portName, + sizeof (struct lpfc_name)) != 0) + || + (memcmp(&fp->FnodeName, &phba->fc_fabparam.nodeName, + sizeof (struct lpfc_name)) != 0)) { + /* This node has switched fabrics. An FLOGI is required + * after the timeout + */ + return (0); + } + + /* Start discovery */ + lpfc_disc_start(phba); + } + + return (0); +} + +void +lpfc_els_timeout(unsigned long ptr) +{ + struct lpfc_hba *phba; + unsigned long iflag; + + phba = (struct lpfc_hba *)ptr; + if (phba == 0) + return; + spin_lock_irqsave(phba->host->host_lock, iflag); + if (!(phba->work_hba_events & WORKER_ELS_TMO)) { + phba->work_hba_events |= WORKER_ELS_TMO; + if (phba->work_wait) + wake_up(phba->work_wait); + } + spin_unlock_irqrestore(phba->host->host_lock, iflag); + return; +} + +void +lpfc_els_timeout_handler(struct lpfc_hba *phba) +{ + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *tmp_iocb, *piocb; + IOCB_t *cmd = NULL; + struct lpfc_dmabuf *pcmd; + struct list_head *dlp; + uint32_t *elscmd; + uint32_t els_command; + uint32_t timeout; + uint32_t remote_ID; + + if (phba == 0) + return; + spin_lock_irq(phba->host->host_lock); + /* If the timer is already canceled do nothing */ + if (!(phba->work_hba_events & WORKER_ELS_TMO)) { + spin_unlock_irq(phba->host->host_lock); + return; + } + timeout = (uint32_t)(phba->fc_ratov << 1); + + pring = &phba->sli.ring[LPFC_ELS_RING]; + dlp = &pring->txcmplq; + + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { + cmd = &piocb->iocb; + + if (piocb->iocb_flag & LPFC_IO_LIBDFC) { + continue; + } + pcmd = (struct lpfc_dmabuf *) piocb->context2; + elscmd = (uint32_t *) (pcmd->virt); + els_command = *elscmd; + + if ((els_command == ELS_CMD_FARP) + || (els_command == ELS_CMD_FARPR)) { + continue; + } + + if (piocb->drvrTimeout > 0) { + if (piocb->drvrTimeout >= timeout) { + piocb->drvrTimeout -= timeout; + } else { + piocb->drvrTimeout = 0; + } + continue; + } + + list_del(&piocb->list); + pring->txcmplq_cnt--; + + if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) { + struct lpfc_nodelist *ndlp; + + ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext); + remote_ID = ndlp->nlp_DID; + if (cmd->un.elsreq64.bdl.ulpIoTag32) { + lpfc_sli_issue_abort_iotag32(phba, + pring, piocb); + } + } else { + remote_ID = cmd->un.elsreq64.remoteID; + } + + lpfc_printf_log(phba, + KERN_ERR, + LOG_ELS, + "%d:0127 ELS timeout Data: x%x x%x x%x x%x\n", + phba->brd_no, els_command, + remote_ID, cmd->ulpCommand, cmd->ulpIoTag); + + /* + * The iocb has timed out; abort it. + */ + if (piocb->iocb_cmpl) { + cmd->ulpStatus = IOSTAT_LOCAL_REJECT; + cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; + spin_unlock_irq(phba->host->host_lock); + (piocb->iocb_cmpl) (phba, piocb, piocb); + spin_lock_irq(phba->host->host_lock); + } else { + list_add_tail(&piocb->list, &phba->lpfc_iocb_list); + } + } + if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt) { + phba->els_tmofunc.expires = jiffies + HZ * timeout; + add_timer(&phba->els_tmofunc); + } + spin_unlock_irq(phba->host->host_lock); +} + +void +lpfc_els_flush_cmd(struct lpfc_hba * phba) +{ + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *tmp_iocb, *piocb; + IOCB_t *cmd = NULL; + struct lpfc_dmabuf *pcmd; + uint32_t *elscmd; + uint32_t els_command; + uint32_t remote_ID; + + pring = &phba->sli.ring[LPFC_ELS_RING]; + spin_lock_irq(phba->host->host_lock); + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { + cmd = &piocb->iocb; + + if (piocb->iocb_flag & LPFC_IO_LIBDFC) { + continue; + } + + /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ + if ((cmd->ulpCommand == CMD_QUE_RING_BUF_CN) || + (cmd->ulpCommand == CMD_QUE_RING_BUF64_CN) || + (cmd->ulpCommand == CMD_CLOSE_XRI_CN) || + (cmd->ulpCommand == CMD_ABORT_XRI_CN)) { + continue; + } + + pcmd = (struct lpfc_dmabuf *) piocb->context2; + elscmd = (uint32_t *) (pcmd->virt); + els_command = *elscmd; + + if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) { + struct lpfc_nodelist *ndlp; + + ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext); + remote_ID = ndlp->nlp_DID; + if (phba->hba_state == LPFC_HBA_READY) { + continue; + } + } else { + remote_ID = cmd->un.elsreq64.remoteID; + } + + list_del(&piocb->list); + pring->txcmplq_cnt--; + + cmd->ulpStatus = IOSTAT_LOCAL_REJECT; + cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; + + if (piocb->iocb_cmpl) { + spin_unlock_irq(phba->host->host_lock); + (piocb->iocb_cmpl) (phba, piocb, piocb); + spin_lock_irq(phba->host->host_lock); + } + else + list_add_tail(&piocb->list, &phba->lpfc_iocb_list); + } + + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { + cmd = &piocb->iocb; + + if (piocb->iocb_flag & LPFC_IO_LIBDFC) { + continue; + } + pcmd = (struct lpfc_dmabuf *) piocb->context2; + elscmd = (uint32_t *) (pcmd->virt); + els_command = *elscmd; + + if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) { + struct lpfc_nodelist *ndlp; + + ndlp = lpfc_findnode_rpi(phba, cmd->ulpContext); + remote_ID = ndlp->nlp_DID; + if (phba->hba_state == LPFC_HBA_READY) { + continue; + } + } else { + remote_ID = cmd->un.elsreq64.remoteID; + } + + list_del(&piocb->list); + pring->txcmplq_cnt--; + + cmd->ulpStatus = IOSTAT_LOCAL_REJECT; + cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; + + if (piocb->iocb_cmpl) { + spin_unlock_irq(phba->host->host_lock); + (piocb->iocb_cmpl) (phba, piocb, piocb); + spin_lock_irq(phba->host->host_lock); + } + else + list_add_tail(&piocb->list, &phba->lpfc_iocb_list); + } + spin_unlock_irq(phba->host->host_lock); + return; +} + +void +lpfc_els_unsol_event(struct lpfc_hba * phba, + struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb) +{ + struct lpfc_sli *psli; + struct lpfc_nodelist *ndlp; + struct lpfc_dmabuf *mp; + uint32_t *lp; + IOCB_t *icmd; + struct ls_rjt stat; + uint32_t cmd; + uint32_t did; + uint32_t newnode; + uint32_t drop_cmd = 0; /* by default do NOT drop received cmd */ + uint32_t rjt_err = 0; + + psli = &phba->sli; + icmd = &elsiocb->iocb; + + if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) { + /* Not enough posted buffers; Try posting more buffers */ + phba->fc_stat.NoRcvBuf++; + lpfc_post_buffer(phba, pring, 0, 1); + return; + } + + /* If there are no BDEs associated with this IOCB, + * there is nothing to do. + */ + if (icmd->ulpBdeCount == 0) + return; + + /* type of ELS cmd is first 32bit word in packet */ + mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un. + cont64[0]. + addrHigh, + icmd->un. + cont64[0].addrLow)); + if (mp == 0) { + drop_cmd = 1; + goto dropit; + } + + newnode = 0; + lp = (uint32_t *) mp->virt; + cmd = *lp++; + lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1); + + if (icmd->ulpStatus) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + drop_cmd = 1; + goto dropit; + } + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(phba)) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + drop_cmd = 1; + goto dropit; + } + + did = icmd->un.rcvels.remoteID; + if ((ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did)) == 0) { + /* Cannot find existing Fabric ndlp, so allocate a new one */ + if ((ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL)) + == 0) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + drop_cmd = 1; + goto dropit; + } + + lpfc_nlp_init(phba, ndlp, did); + newnode = 1; + if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) { + ndlp->nlp_type |= NLP_FABRIC; + } + } + + phba->fc_stat.elsRcvFrame++; + elsiocb->context1 = ndlp; + elsiocb->context2 = mp; + + if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { + cmd &= ELS_CMD_MASK; + } + /* ELS command <elsCmd> received from NPORT <did> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "%d:0112 ELS command x%x received from NPORT x%x " + "Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state); + + switch (cmd) { + case ELS_CMD_PLOGI: + phba->fc_stat.elsRcvPLOGI++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI); + break; + case ELS_CMD_FLOGI: + phba->fc_stat.elsRcvFLOGI++; + lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode); + if (newnode) { + mempool_free( ndlp, phba->nlp_mem_pool); + } + break; + case ELS_CMD_LOGO: + phba->fc_stat.elsRcvLOGO++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO); + break; + case ELS_CMD_PRLO: + phba->fc_stat.elsRcvPRLO++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO); + break; + case ELS_CMD_RSCN: + phba->fc_stat.elsRcvRSCN++; + lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode); + if (newnode) { + mempool_free( ndlp, phba->nlp_mem_pool); + } + break; + case ELS_CMD_ADISC: + phba->fc_stat.elsRcvADISC++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC); + break; + case ELS_CMD_PDISC: + phba->fc_stat.elsRcvPDISC++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC); + break; + case ELS_CMD_FARPR: + phba->fc_stat.elsRcvFARPR++; + lpfc_els_rcv_farpr(phba, elsiocb, ndlp); + break; + case ELS_CMD_FARP: + phba->fc_stat.elsRcvFARP++; + lpfc_els_rcv_farp(phba, elsiocb, ndlp); + break; + case ELS_CMD_FAN: + phba->fc_stat.elsRcvFAN++; + lpfc_els_rcv_fan(phba, elsiocb, ndlp); + break; + case ELS_CMD_RRQ: + phba->fc_stat.elsRcvRRQ++; + lpfc_els_rcv_rrq(phba, elsiocb, ndlp); + break; + case ELS_CMD_PRLI: + phba->fc_stat.elsRcvPRLI++; + if (phba->hba_state < LPFC_DISC_AUTH) { + rjt_err = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI); + break; + case ELS_CMD_RNID: + phba->fc_stat.elsRcvRNID++; + lpfc_els_rcv_rnid(phba, elsiocb, ndlp); + break; + default: + /* Unsupported ELS command, reject */ + rjt_err = LSEXP_NOTHING_MORE; + + /* Unknown ELS command <elsCmd> received from NPORT <did> */ + lpfc_printf_log(phba, KERN_ERR, LOG_ELS, + "%d:0115 Unknown ELS command x%x received from " + "NPORT x%x\n", phba->brd_no, cmd, did); + if (newnode) { + mempool_free( ndlp, phba->nlp_mem_pool); + } + break; + } + + /* check if need to LS_RJT received ELS cmd */ + if (rjt_err) { + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = rjt_err; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp); + } + + if (elsiocb->context2) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } +dropit: + /* check if need to drop received ELS cmd */ + if (drop_cmd == 1) { + lpfc_printf_log(phba, KERN_ERR, LOG_ELS, + "%d:0111 Dropping received ELS cmd " + "Data: x%x x%x\n", phba->brd_no, + icmd->ulpStatus, icmd->un.ulpWord[4]); + phba->fc_stat.elsRcvDrop++; + } + return; +} |
