/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2009 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.emulex.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. * *******************************************************************/ /* See Fibre Channel protocol T11 FC-LS for details */ #include #include #include #include #include #include #include #include "lpfc_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" #include "lpfc_sli4.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_vport.h" #include "lpfc_debugfs.h" static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *); static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *); static void lpfc_fabric_abort_vport(struct lpfc_vport *vport); static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry); static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb); static void lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, struct lpfc_nodelist *ndlp); static int lpfc_max_els_tries = 3; /** * lpfc_els_chk_latt - Check host link attention event for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there is an outstanding host link * attention event during the discovery process with the @vport. It is done * by reading the HBA's Host Attention (HA) register. If there is any host * link attention events during this @vport's discovery process, the @vport * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall * be issued if the link state is not already in host link cleared state, * and a return code shall indicate whether the host link attention event * had happened. * * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport * state in LPFC_VPORT_READY, the request for checking host link attention * event will be ignored and a return code shall indicate no host link * attention event had happened. * * Return codes * 0 - no host link attention event happened * 1 - host link attention event happened **/ int lpfc_els_chk_latt(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; uint32_t ha_copy; if (vport->port_state >= LPFC_VPORT_READY || phba->link_state == LPFC_LINK_DOWN || phba->sli_rev > LPFC_SLI_REV3) return 0; /* Read the HBA Host Attention Register */ ha_copy = readl(phba->HAregaddr); if (!(ha_copy & HA_LATT)) return 0; /* Pending Link Event during Discovery */ lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0237 Pending Link Event during " "Discovery: State x%x\n", phba->pport->port_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(shost->host_lock); vport->fc_flag |= FC_ABORT_DISCOVERY; spin_unlock_irq(shost->host_lock); if (phba->link_state != LPFC_CLEAR_LA) lpfc_issue_clear_la(phba, vport); return 1; } /** * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure * @vport: pointer to a host virtual N_Port data structure. * @expectRsp: flag indicating whether response is expected. * @cmdSize: size of the ELS command. * @retry: number of retries to the command IOCB when it fails. * @ndlp: pointer to a node-list data structure. * @did: destination identifier. * @elscmd: the ELS command code. * * This routine is used for allocating a lpfc-IOCB data structure from * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters * passed into the routine for discovery state machine to issue an Extended * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation * and preparation routine that is used by all the discovery state machine * routines and the ELS command-specific fields will be later set up by * the individual discovery machine routines after calling this routine * allocating and preparing a generic IOCB data structure. It fills in the * Buffer Descriptor Entries (BDEs), allocates buffers for both command * payload and response payload (if expected). The reference count on the * ndlp is incremented by 1 and the reference to the ndlp is put into * context1 of the IOCB data structure for this IOCB to hold the ndlp * reference for the command's callback function to access later. * * Return code * Pointer to the newly allocated/prepared els iocb data structure * NULL - when els iocb data structure allocation/preparation failed **/ struct lpfc_iocbq * lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp, uint16_t cmdSize, uint8_t retry, struct lpfc_nodelist *ndlp, uint32_t did, uint32_t elscmd) { struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_dmabuf *pcmd, *prsp, *pbuflist; struct ulp_bde64 *bpl; IOCB_t *icmd; if (!lpfc_is_link_up(phba)) return NULL; /* Allocate buffer for command iocb */ elsiocb = lpfc_sli_get_iocbq(phba); if (elsiocb == NULL) return NULL; /* * If this command is for fabric controller and HBA running * in FIP mode send FLOGI, FDISC and LOGO as FIP frames. */ if ((did == Fabric_DID) && (phba->hba_flag & HBA_FIP_SUPPORT) && ((elscmd == ELS_CMD_FLOGI) || (elscmd == ELS_CMD_FDISC) || (elscmd == ELS_CMD_LOGO))) switch (elscmd) { case ELS_CMD_FLOGI: elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_FDISC: elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_LOGO: elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT) & LPFC_FIP_ELS_ID_MASK); break; } else elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK; icmd = &elsiocb->iocb; /* fill in BDEs for command */ /* Allocate buffer for command payload */ pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (pcmd) pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); if (!pcmd || !pcmd->virt) goto els_iocb_free_pcmb_exit; 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 || !prsp->virt) goto els_iocb_free_prsp_exit; 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 || !pbuflist->virt) goto els_iocb_free_pbuf_exit; 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_BLP_64; icmd->un.elsreq64.remoteID = did; /* DID */ if (expectRsp) { icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); icmd->ulpCommand = CMD_ELS_REQUEST64_CR; icmd->ulpTimeout = phba->fc_ratov * 2; } 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; if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { icmd->un.elsreq64.myID = vport->fc_myDID; /* For ELS_REQUEST64_CR, use the VPI by default */ icmd->ulpContext = vport->vpi + phba->vpi_base; icmd->ulpCt_h = 0; /* The CT field must be 0=INVALID_RPI for the ECHO cmd */ if (elscmd == ELS_CMD_ECHO) icmd->ulpCt_l = 0; /* context = invalid RPI */ else icmd->ulpCt_l = 1; /* context = VPI */ } 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_TYPE_BDE_64; bpl->tus.w = le32_to_cpu(bpl->tus.w); } /* prevent preparing iocb with NULL ndlp reference */ elsiocb->context1 = lpfc_nlp_get(ndlp); if (!elsiocb->context1) goto els_iocb_free_pbuf_exit; elsiocb->context2 = pcmd; elsiocb->context3 = pbuflist; elsiocb->retry = retry; elsiocb->vport = vport; elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; if (prsp) { list_add(&prsp->list, &pcmd->list); } if (expectRsp) { /* Xmit ELS command to remote NPORT */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0116 Xmit ELS command x%x to remote " "NPORT x%x I/O tag: x%x, port state: x%x\n", elscmd, did, elsiocb->iotag, vport->port_state); } else { /* Xmit ELS response to remote NPORT */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0117 Xmit ELS response x%x to remote " "NPORT x%x I/O tag: x%x, size: x%x\n", elscmd, ndlp->nlp_DID, elsiocb->iotag, cmdSize); } return elsiocb; els_iocb_free_pbuf_exit: if (expectRsp) lpfc_mbuf_free(phba, prsp->virt, prsp->phys); kfree(pbuflist); els_iocb_free_prsp_exit: lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); kfree(prsp); els_iocb_free_pcmb_exit: kfree(pcmd); lpfc_sli_release_iocbq(phba, elsiocb); return NULL; } /** * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a fabric registration login for a @vport. An * active ndlp node with Fabric_DID must already exist for this @vport. * The routine invokes two mailbox commands to carry out fabric registration * login through the HBA firmware: the first mailbox command requests the * HBA to perform link configuration for the @vport; and the second mailbox * command requests the HBA to perform the actual fabric registration login * with the @vport. * * Return code * 0 - successfully issued fabric registration login for @vport * -ENXIO -- failed to issue fabric registration login for @vport **/ int lpfc_issue_fabric_reglogin(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; struct lpfc_dmabuf *mp; struct lpfc_nodelist *ndlp; struct serv_parm *sp; int rc; int err = 0; sp = &phba->fc_fabparam; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { err = 1; goto fail; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { err = 2; goto fail; } vport->port_state = LPFC_FABRIC_CFG_LINK; lpfc_config_link(phba, mbox); mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; mbox->vport = vport; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { err = 3; goto fail_free_mbox; } mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) { err = 4; goto fail; } rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0); if (rc) { err = 5; goto fail_free_mbox; } mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; mbox->vport = vport; /* increment the reference count on ndlp to hold reference * for the callback routine. */ mbox->context2 = lpfc_nlp_get(ndlp); rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { err = 6; goto fail_issue_reg_login; } return 0; fail_issue_reg_login: /* decrement the reference count on ndlp just incremented * for the failed mbox command. */ lpfc_nlp_put(ndlp); mp = (struct lpfc_dmabuf *) mbox->context1; lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); fail_free_mbox: mempool_free(mbox, phba->mbox_mem_pool); fail: lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0249 Cannot issue Register Fabric login: Err %d\n", err); return -ENXIO; } /** * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for * the @vport. This mailbox command is necessary for FCoE only. * * Return code * 0 - successfully issued REG_VFI for @vport * A failure code otherwise. **/ static int lpfc_issue_reg_vfi(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mboxq; struct lpfc_nodelist *ndlp; struct serv_parm *sp; struct lpfc_dmabuf *dmabuf; int rc = 0; sp = &phba->fc_fabparam; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { rc = -ENODEV; goto fail; } dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); if (!dmabuf) { rc = -ENOMEM; goto fail; } dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys); if (!dmabuf->virt) { rc = -ENOMEM; goto fail_free_dmabuf; } mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { rc = -ENOMEM; goto fail_free_coherent; } vport->port_state = LPFC_FABRIC_CFG_LINK; memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam)); lpfc_reg_vfi(mboxq, vport, dmabuf->phys); mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi; mboxq->vport = vport; mboxq->context1 = dmabuf; rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) { rc = -ENXIO; goto fail_free_mbox; } return 0; fail_free_mbox: mempool_free(mboxq, phba->mbox_mem_pool); fail_free_coherent: lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); fail_free_dmabuf: kfree(dmabuf); fail: lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0289 Issue Register VFI failed: Err %d\n", rc); return rc; } /** * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * @irsp: pointer to the IOCB within the lpfc response IOCB. * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into a fabric * port in a fabric topology. It properly sets up the parameters to the @ndlp * from the IOCB response. It also check the newly assigned N_Port ID to the * @vport against the previously assigned N_Port ID. If it is different from * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine * is invoked on all the remaining nodes with the @vport to unregister the * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() * is invoked to register login to the fabric. * * Return code * 0 - Success (currently, always return 0) **/ static int lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp, IOCB_t *irsp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np; spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_FABRIC; spin_unlock_irq(shost->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(shost->host_lock); vport->fc_flag |= FC_PUBLIC_LOOP; spin_unlock_irq(shost->host_lock); } else { /* * If we are a N-port connected to a Fabric, fixup sparam's so * logins to devices on remote loops work. */ vport->fc_sparam.cmn.altBbCredit = 1; } vport->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)); 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); phba->link_flag |= LS_NPIV_FAB_SUPPORTED; } else { /* Because we asked f/w for NPIV it still expects us to call reg_vnpid atleast for the physcial host */ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_VPORT, "1817 Fabric does not support NPIV " "- configuring single port mode.\n"); phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; } } if ((vport->fc_prevDID != vport->fc_myDID) && !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { /* If our NportID changed, we need to ensure all * remaining NPORTs get unreg_login'ed. */ list_for_each_entry_safe(np, next_np, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(np)) continue; if ((np->nlp_state != NLP_STE_NPR_NODE) || !(np->nlp_flag & NLP_NPR_ADISC)) continue; spin_lock_irq(shost->host_lock); np->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(shost->host_lock); lpfc_unreg_rpi(vport, np); } if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { lpfc_mbx_unreg_vpi(vport); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); } } if (phba->sli_rev < LPFC_SLI_REV4) { lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED && vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) lpfc_register_new_vport(phba, vport, ndlp); else lpfc_issue_fabric_reglogin(vport); } else { ndlp->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); if (vport->vpi_state & LPFC_VPI_REGISTERED) { lpfc_start_fdiscs(phba); lpfc_do_scr_ns_plogi(phba, vport); } else lpfc_issue_reg_vfi(vport); } return 0; } /** * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into an N_Port * in a point-to-point topology. First, the @vport's N_Port Name is compared * with the received N_Port Name: if the @vport's N_Port Name is greater than * the received N_Port Name lexicographically, this node shall assign local * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, * this node shall just wait for the remote node to issue PLOGI and assign * N_Port IDs. * * Return code * 0 - Success * -ENXIO - Fail **/ static int lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; LPFC_MBOXQ_t *mbox; int rc; spin_lock_irq(shost->host_lock); vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); spin_unlock_irq(shost->host_lock); phba->fc_edtov = FF_DEF_EDTOV; phba->fc_ratov = FF_DEF_RATOV; rc = memcmp(&vport->fc_portname, &sp->portName, sizeof(vport->fc_portname)); if (rc >= 0) { /* This side will initiate the PLOGI */ spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_PT2PT_PLOGI; spin_unlock_irq(shost->host_lock); /* * N_Port ID cannot be 0, set our to LocalID the other * side will be RemoteID. */ /* not equal */ if (rc) vport->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; 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; } /* Decrement ndlp reference count indicating that ndlp can be * safely released when other references to it are done. */ lpfc_nlp_put(ndlp); ndlp = lpfc_findnode_did(vport, 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(vport, ndlp, PT2PT_RemoteID); } else if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 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); spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); } else /* This side will wait for the PLOGI, decrement ndlp reference * count indicating that ndlp can be released when other * references to it are done. */ lpfc_nlp_put(ndlp); /* If we are pt2pt with another NPort, force NPIV off! */ phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_PT2PT; spin_unlock_irq(shost->host_lock); /* Start discovery - this should just do CLEAR_LA */ lpfc_disc_start(vport); return 0; fail: return -ENXIO; } /** * lpfc_cmpl_els_flogi - Completion callback function for flogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the top-level completion callback function for issuing * a Fabric Login (FLOGI) command. If the response IOCB reported error, * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If * retry has been made (either immediately or delayed with lpfc_els_retry() * returning 1), the command IOCB will be released and function returned. * If the retry attempt has been given up (possibly reach the maximum * number of retries), one additional decrement of ndlp reference shall be * invoked before going out after releasing the command IOCB. This will * actually release the remote node (Note, lpfc_els_free_iocb() will also * invoke one decrement of ndlp reference count). If no error reported in * the IOCB status, the command Port ID field is used to determine whether * this is a point-to-point topology or a fabric topology: if the Port ID * field is assigned, it is a fabric topology; otherwise, it is a * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the * specific topology completion conditions. **/ static void lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 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(vport)) { /* One additional decrement on node reference count to * trigger the release of the node */ lpfc_nlp_put(ndlp); goto out; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "FLOGI cmpl: status:x%x/x%x state:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], vport->port_state); if (irsp->ulpStatus) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) goto out; /* FLOGI failed, so there is no fabric */ spin_lock_irq(shost->host_lock); vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); spin_unlock_irq(shost->host_lock); /* If private loop, then allow max outstanding 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) { vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; } /* FLOGI failure */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0100 FLOGI failure Data: x%x x%x " "x%x\n", irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout); 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_vlog(vport, KERN_INFO, LOG_ELS, "0101 FLOGI completes successfully " "Data: x%x x%x x%x x%x\n", irsp->un.ulpWord[4], sp->cmn.e_d_tov, sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution); if (vport->port_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(vport, ndlp, sp, irsp); else rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); if (!rc) goto out; } flogifail: lpfc_nlp_put(ndlp); if (!lpfc_error_lost_link(irsp)) { /* FLOGI failed, so just use loop map to make discovery list */ lpfc_disc_list_loopmap(vport); /* Start discovery */ lpfc_disc_start(vport); } else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) && (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) && (phba->link_state != LPFC_CLEAR_LA)) { /* If FLOGI failed enable link interrupt. */ lpfc_issue_clear_la(phba, vport); } out: lpfc_els_free_iocb(phba, cmdiocb); } /** * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Fabric Login (FLOGI) Request ELS command * for a @vport. The initiator service parameters are put into the payload * of the FLOGI Request IOCB and the top-level callback function pointer * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback * function field. The lpfc_issue_fabric_iocb routine is invoked to send * out FLOGI ELS command with one outstanding fabric IOCB at a time. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the FLOGI ELS command. * * Return code * 0 - successfully issued flogi iocb for @vport * 1 - failed to issue flogi iocb for @vport **/ static int lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct lpfc_hba *phba = vport->phba; 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)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_FLOGI); if (!elsiocb) 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, &vport->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; if (phba->sli_rev == LPFC_SLI_REV4) { elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1); elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1); /* FLOGI needs to be 3 for WQE FCFI */ /* Set the fcfi to the fcfi we registered with */ elsiocb->iocb.ulpContext = phba->fcf.fcfi; } else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { sp->cmn.request_multiple_Nport = 1; /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */ icmd->ulpCt_h = 1; icmd->ulpCt_l = 0; } if (phba->fc_topology != TOPOLOGY_LOOP) { icmd->un.elsreq64.myID = 0; icmd->un.elsreq64.fl = 1; } tmo = phba->fc_ratov; phba->fc_ratov = LPFC_DISC_FLOGI_TMO; lpfc_set_disctmo(vport); phba->fc_ratov = tmo; phba->fc_stat.elsXmitFLOGI++; elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FLOGI: opt:x%x", phba->sli3_options, 0, 0); rc = lpfc_issue_fabric_iocb(phba, elsiocb); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs * @phba: pointer to lpfc hba data structure. * * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq * list and issues an abort IOCB commond on each outstanding IOCB that * contains a active Fabric_DID ndlp. Note that this function is to issue * the abort IOCB command on all the outstanding IOCBs, thus when this * function returns, it does not guarantee all the IOCBs are actually aborted. * * Return code * 0 - Successfully issued abort iocb on all outstanding flogis (Always 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 */ lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, "0201 Abort outstanding I/O on NPort x%x\n", 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->hbalock); list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { icmd = &iocb->iocb; if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR && icmd->un.elsreq64.bdl.ulpIoTag32) { ndlp = (struct lpfc_nodelist *)(iocb->context1); if (ndlp && NLP_CHK_NODE_ACT(ndlp) && (ndlp->nlp_DID == Fabric_DID)) lpfc_sli_issue_abort_iotag(phba, pring, iocb); } } spin_unlock_irq(&phba->hbalock); return 0; } /** * lpfc_initial_flogi - Issue an initial fabric login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Login (FLOGI) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_flogi() routine * is then invoked with the @vport and the ndlp to perform the FLOGI for the * @vport. * * Return code * 0 - failed to issue initial flogi for @vport * 1 - successfully issued initial flogi for @vport **/ int lpfc_initial_flogi(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp; vport->port_state = LPFC_FLOGI; lpfc_set_disctmo(vport); /* 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 = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) return 0; lpfc_nlp_init(vport, ndlp, Fabric_DID); /* Set the node type */ ndlp->nlp_type |= NLP_FABRIC; /* Put ndlp onto node list */ lpfc_enqueue_node(vport, ndlp); } else if (!NLP_CHK_NODE_ACT(ndlp)) { /* re-setup ndlp without removing from node list */ ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) return 0; } if (lpfc_issue_els_flogi(vport, ndlp, 0)) /* This decrement of reference count to node shall kick off * the release of the node. */ lpfc_nlp_put(ndlp); return 1; } /** * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Discover (FDISC) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine * is then invoked with the @vport and the ndlp to perform the FDISC for the * @vport. * * Return code * 0 - failed to issue initial fdisc for @vport * 1 - successfully issued initial fdisc for @vport **/ int lpfc_initial_fdisc(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp; /* 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 = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) return 0; lpfc_nlp_init(vport, ndlp, Fabric_DID); /* Put ndlp onto node list */ lpfc_enqueue_node(vport, ndlp); } else if (!NLP_CHK_NODE_ACT(ndlp)) { /* re-setup ndlp without removing from node list */ ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) return 0; } if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { /* decrement node reference count to trigger the release of * the node. */ lpfc_nlp_put(ndlp); return 0; } return 1; } /** * lpfc_more_plogi - Check and issue remaining plogis for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there are more remaining Port Logins * (PLOGI) to be issued for the @vport. If so, it will invoke the routine * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes * to issue ELS PLOGIs up to the configured discover threads with the * @vport (@vport->cfg_discovery_threads). The function also decrement * the @vport's num_disc_node by 1 if it is not already 0. **/ void lpfc_more_plogi(struct lpfc_vport *vport) { int sentplogi; if (vport->num_disc_nodes) vport->num_disc_nodes--; /* Continue discovery with PLOGIs to go */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0232 Continue discovery with %d PLOGIs to go " "Data: x%x x%x x%x\n", vport->num_disc_nodes, vport->fc_plogi_cnt, vport->fc_flag, vport->port_state); /* Check to see if there are more PLOGIs to be sent */ if (vport->fc_flag & FC_NLP_MORE) /* go thru NPR nodes and issue any remaining ELS PLOGIs */ sentplogi = lpfc_els_disc_plogi(vport); return; } /** * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp * @phba: pointer to lpfc hba data structure. * @prsp: pointer to response IOCB payload. * @ndlp: pointer to a node-list data structure. * * This routine checks and indicates whether the WWPN of an N_Port, retrieved * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. * The following cases are considered N_Port confirmed: * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but * it does not have WWPN assigned either. If the WWPN is confirmed, the * pointer to the @ndlp will be returned. If the WWPN is not confirmed: * 1) if there is a node on vport list other than the @ndlp with the same * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked * on that node to release the RPI associated with the node; 2) if there is * no node found on vport list with the same WWPN of the N_Port PLOGI logged * into, a new node shall be allocated (or activated). In either case, the * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall * be released and the new_ndlp shall be put on to the vport node list and * its pointer returned as the confirmed node. * * Note that before the @ndlp got "released", the keepDID from not-matching * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID * of the @ndlp. This is because the release of @ndlp is actually to put it * into an inactive state on the vport node list and the vport node list * management algorithm does not allow two node with a same DID. * * Return code * pointer to the PLOGI N_Port @ndlp **/ static struct lpfc_nodelist * lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, struct lpfc_nodelist *ndlp) { struct lpfc_vport *vport = ndlp->vport; struct lpfc_nodelist *new_ndlp; struct lpfc_rport_data *rdata; struct fc_rport *rport; struct serv_parm *sp; uint8_t name[sizeof(struct lpfc_name)]; uint32_t rc, keepDID = 0; /* Fabric nodes can have the same WWPN so we don't bother searching * by WWPN. Just return the ndlp that was given to us. */ if (ndlp->nlp_type & NLP_FABRIC) return ndlp; sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t)); memset(name, 0, sizeof(struct lpfc_name)); /* Now we find out if the NPort we are logging into, matches the WWPN * we have for that ndlp. If not, we have some work to do. */ new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName); if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp)) return ndlp; if (!new_ndlp) { rc = memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)); if (!rc) return ndlp; new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC); if (!new_ndlp) return ndlp; lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID); } else if (!NLP_CHK_NODE_ACT(new_ndlp)) { rc = memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)); if (!rc) return ndlp; new_ndlp = lpfc_enable_node(vport, new_ndlp, NLP_STE_UNUSED_NODE); if (!new_ndlp) return ndlp; keepDID = new_ndlp->nlp_DID; } else keepDID = new_ndlp->nlp_DID; lpfc_unreg_rpi(vport, new_ndlp); new_ndlp->nlp_DID = ndlp->nlp_DID; new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; if (ndlp->nlp_flag & NLP_NPR_2B_DISC) new_ndlp->nlp_flag |= NLP_NPR_2B_DISC; ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; /* Set state will put new_ndlp on to node list if not already done */ lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); /* Move this back to NPR state */ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { /* The new_ndlp is replacing ndlp totally, so we need * to put ndlp on UNUSED list and try to free it. */ /* Fix up the rport accordingly */ rport = ndlp->rport; if (rport) { rdata = rport->dd_data; if (rdata->pnode == ndlp) { lpfc_nlp_put(ndlp); ndlp->rport = NULL; rdata->pnode = lpfc_nlp_get(new_ndlp); new_ndlp->rport = rport; } new_ndlp->nlp_type = ndlp->nlp_type; } /* We shall actually free the ndlp with both nlp_DID and * nlp_portname fields equals 0 to avoid any ndlp on the * nodelist never to be used. */ if (ndlp->nlp_DID == 0) { spin_lock_irq(&phba->ndlp_lock); NLP_SET_FREE_REQ(ndlp); spin_unlock_irq(&phba->ndlp_lock); } /* Two ndlps cannot have the same did on the nodelist */ ndlp->nlp_DID = keepDID; lpfc_drop_node(vport, ndlp); } else { lpfc_unreg_rpi(vport, ndlp); /* Two ndlps cannot have the same did */ ndlp->nlp_DID = keepDID; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); } return new_ndlp; } /** * lpfc_end_rscn - Check and handle more rscn for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether more Registration State Change * Notifications (RSCNs) came in while the discovery state machine was in * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be * invoked to handle the additional RSCNs for the @vport. Otherwise, the * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of * handling the RSCNs. **/ void lpfc_end_rscn(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); if (vport->fc_flag & FC_RSCN_MODE) { /* * Check to see if more RSCNs came in while we were * processing this one. */ if (vport->fc_rscn_id_cnt || (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) lpfc_els_handle_rscn(vport); else { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_RSCN_MODE; spin_unlock_irq(shost->host_lock); } } } /** * lpfc_cmpl_els_plogi - Completion callback function for plogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for issuing the Port * Login (PLOGI) command. For PLOGI completion, there must be an active * ndlp on the vport node list that matches the remote node ID from the * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply * ignored and command IOCB released. The PLOGI response IOCB status is * checked for error conditons. If there is error status reported, PLOGI * retry shall be attempted by invoking the lpfc_els_retry() routine. * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine * (DSM) is set for this PLOGI completion. Finally, it checks whether * there are additional N_Port nodes with the vport that need to perform * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition * PLOGIs. **/ static void lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); IOCB_t *irsp; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *prsp; int disc, rc, did, type; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->context_un.rsp_iocb = rspiocb; irsp = &rspiocb->iocb; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "PLOGI cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.elsreq64.remoteID); ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID); if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0136 PLOGI completes to NPort x%x " "with no ndlp. Data: x%x x%x x%x\n", irsp->un.elsreq64.remoteID, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpIoTag); goto out; } /* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery. */ spin_lock_irq(shost->host_lock); disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); rc = 0; /* PLOGI completes to NPort */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0102 PLOGI completes to NPort x%x " "Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout, disc, vport->num_disc_nodes); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->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(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); } goto out; } /* PLOGI failed */ /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (lpfc_error_lost_link(irsp)) rc = NLP_STE_FREED_NODE; else rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PLOGI); } else { /* Good status, call state machine */ prsp = list_entry(((struct lpfc_dmabuf *) cmdiocb->context2)->list.next, struct lpfc_dmabuf, list); ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp); rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PLOGI); } if (disc && vport->num_disc_nodes) { /* Check to see if there are more PLOGIs to be sent */ lpfc_more_plogi(vport); if (vport->num_disc_nodes == 0) { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NDISC_ACTIVE; spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } out: lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @did: destination port identifier. * @retry: number of retries to the command IOCB. * * This routine issues a Port Login (PLOGI) command to a remote N_Port * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. * This routine constructs the proper feilds of the PLOGI IOCB and invokes * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the PLOGI ELS command. * * Return code * 0 - Successfully issued a plogi for @vport * 1 - failed to issue a plogi for @vport **/ int lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry) { struct lpfc_hba *phba = vport->phba; struct serv_parm *sp; IOCB_t *icmd; struct lpfc_nodelist *ndlp; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; int ret; psli = &phba->sli; ndlp = lpfc_findnode_did(vport, did); if (ndlp && !NLP_CHK_NODE_ACT(ndlp)) ndlp = NULL; /* If ndlp is not NULL, we will bump the reference count on it */ cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, ELS_CMD_PLOGI); if (!elsiocb) 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, &vport->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; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue PLOGI: did:x%x", did, 0, 0); phba->fc_stat.elsXmitPLOGI++; elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi; ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (ret == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_cmpl_els_prli - Completion callback function for prli * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for a Process Login * (PRLI) ELS command. The PRLI response IOCB status is checked for error * status. If there is error status reported, PRLI retry shall be attempted * by invoking the lpfc_els_retry() routine. Otherwise, the state * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this * ndlp to mark the PRLI completion. **/ static void lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 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(shost->host_lock); ndlp->nlp_flag &= ~NLP_PRLI_SND; spin_unlock_irq(shost->host_lock); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "PRLI cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); /* PRLI completes to NPort */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0103 PRLI completes to NPort x%x " "Data: x%x x%x x%x x%x\n", ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout, vport->num_disc_nodes); vport->fc_prli_sent--; /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) 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 (lpfc_error_lost_link(irsp)) goto out; else lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI); } else /* Good status, call state machine */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI); out: lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_issue_els_prli - Issue a prli iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Process Login (PRLI) ELS command for the * @vport. The PRLI service parameters are set up in the payload of the * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine * is put to the IOCB completion callback func field before invoking the * routine lpfc_sli_issue_iocb() to send out PRLI command. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the PRLI ELS command. * * Return code * 0 - successfully issued prli iocb command for @vport * 1 - failed to issue prli iocb command for @vport **/ int lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; PRLI *npr; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = (sizeof(uint32_t) + sizeof(PRLI)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_PRLI); if (!elsiocb) 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; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue PRLI: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitPRLI++; elsiocb->iocb_cmpl = lpfc_cmpl_els_prli; spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_PRLI_SND; spin_unlock_irq(shost->host_lock); if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_PRLI_SND; spin_unlock_irq(shost->host_lock); lpfc_els_free_iocb(phba, elsiocb); return 1; } vport->fc_prli_sent++; return 0; } /** * lpfc_rscn_disc - Perform rscn discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine performs Registration State Change Notification (RSCN) * discovery for a @vport. If the @vport's node port recovery count is not * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all * the nodes that need recovery. If none of the PLOGI were needed through * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be * invoked to check and handle possible more RSCN came in during the period * of processing the current ones. **/ static void lpfc_rscn_disc(struct lpfc_vport *vport) { lpfc_can_disctmo(vport); /* RSCN discovery */ /* go thru NPR nodes and issue ELS PLOGIs */ if (vport->fc_npr_cnt) if (lpfc_els_disc_plogi(vport)) return; lpfc_end_rscn(vport); } /** * lpfc_adisc_done - Complete the adisc phase of discovery * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. * * This function is called when the final ADISC is completed during discovery. * This function handles clearing link attention or issuing reg_vpi depending * on whether npiv is enabled. This function also kicks off the PLOGI phase of * discovery. * This function is called with no locks held. **/ static void lpfc_adisc_done(struct lpfc_vport *vport) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; /* * For NPIV, cmpl_reg_vpi will set port_state to READY, * and continue discovery. */ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && !(vport->fc_flag & FC_RSCN_MODE) && (phba->sli_rev < LPFC_SLI_REV4)) { lpfc_issue_reg_vpi(phba, vport); return; } /* * For SLI2, we need to set port_state to READY * and continue discovery. */ if (vport->port_state < LPFC_VPORT_READY) { /* If we get here, there is nothing to ADISC */ if (vport->port_type == LPFC_PHYSICAL_PORT) lpfc_issue_clear_la(phba, vport); if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { vport->num_disc_nodes = 0; /* go thru NPR list, issue ELS PLOGIs */ if (vport->fc_npr_cnt) lpfc_els_disc_plogi(vport); if (!vport->num_disc_nodes) { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NDISC_ACTIVE; spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } vport->port_state = LPFC_VPORT_READY; } else lpfc_rscn_disc(vport); } /** * lpfc_more_adisc - Issue more adisc as needed * @vport: pointer to a host virtual N_Port data structure. * * This routine determines whether there are more ndlps on a @vport * node list need to have Address Discover (ADISC) issued. If so, it will * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's * remaining nodes which need to have ADISC sent. **/ void lpfc_more_adisc(struct lpfc_vport *vport) { int sentadisc; if (vport->num_disc_nodes) vport->num_disc_nodes--; /* Continue discovery with ADISCs to go */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0210 Continue discovery with %d ADISCs to go " "Data: x%x x%x x%x\n", vport->num_disc_nodes, vport->fc_adisc_cnt, vport->fc_flag, vport->port_state); /* Check to see if there are more ADISCs to be sent */ if (vport->fc_flag & FC_NLP_MORE) { lpfc_set_disctmo(vport); /* go thru NPR nodes and issue any remaining ELS ADISCs */ sentadisc = lpfc_els_disc_adisc(vport); } if (!vport->num_disc_nodes) lpfc_adisc_done(vport); return; } /** * lpfc_cmpl_els_adisc - Completion callback function for adisc * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the Address Discover * (ADISC) command. It first checks to see whether link went down during * the discovery process. If so, the node will be marked as node port * recovery for issuing discover IOCB by the link attention handler and * exit. Otherwise, the response status is checked. If error was reported * in the response status, the ADISC command shall be retried by invoking * the lpfc_els_retry() routine. Otherwise, if no error was reported in * the response status, the state machine is invoked to set transition * with respect to NLP_EVT_CMPL_ADISC event. **/ static void lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); IOCB_t *irsp; struct lpfc_nodelist *ndlp; int disc; /* 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; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "ADISC cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); /* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery. */ spin_lock_irq(shost->host_lock); disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC); spin_unlock_irq(shost->host_lock); /* ADISC completes to NPort */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0104 ADISC completes to NPort x%x " "Data: x%x x%x x%x x%x x%x\n", ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout, disc, vport->num_disc_nodes); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->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(shost->host_lock); ndlp->nlp_flag |= NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); lpfc_set_disctmo(vport); } goto out; } /* ADISC failed */ /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(irsp)) lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_ADISC); } 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); return; } /** * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues an Address Discover (ADISC) for an @ndlp on a * @vport. It prepares the payload of the ADISC ELS command, updates the * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine * to issue the ADISC ELS command. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the ADISC ELS command. * * Return code * 0 - successfully issued adisc * 1 - failed to issue adisc **/ int lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; ADISC *ap; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = (sizeof(uint32_t) + sizeof(ADISC)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_ADISC); if (!elsiocb) 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, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ap->DID = be32_to_cpu(vport->fc_myDID); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue ADISC: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitADISC++; elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc; spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_ADISC_SND; spin_unlock_irq(shost->host_lock); if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_ADISC_SND; spin_unlock_irq(shost->host_lock); lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_cmpl_els_logo - Completion callback function for logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the ELS Logout (LOGO) * command. If no error status was reported from the LOGO response, the * state machine of the associated ndlp shall be invoked for transition with * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported, * the lpfc_els_retry() routine will be invoked to retry the LOGO command. **/ static void lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_vport *vport = ndlp->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); IOCB_t *irsp; struct lpfc_sli *psli; psli = &phba->sli; /* we pass cmdiocb to state machine which needs rspiocb as well */ cmdiocb->context_un.rsp_iocb = rspiocb; irsp = &(rspiocb->iocb); spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; spin_unlock_irq(shost->host_lock); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "LOGO cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); /* LOGO completes to NPort */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0105 LOGO completes to NPort x%x " "Data: x%x x%x x%x x%x\n", ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout, vport->num_disc_nodes); /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto out; if (ndlp->nlp_flag & NLP_TARGET_REMOVE) { /* NLP_EVT_DEVICE_RM should unregister the RPI * which should abort all outstanding IOs. */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_DEVICE_RM); 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 (lpfc_error_lost_link(irsp)) goto out; else lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); } else /* Good status, call state machine. * This will unregister the rpi if needed. */ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); out: lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_issue_els_logo - Issue a logo to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine constructs and issues an ELS Logout (LOGO) iocb command * to a remote node, referred by an @ndlp on a @vport. It constructs the * payload of the IOCB, properly sets up the @ndlp state, and invokes the * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the LOGO ELS command. * * Return code * 0 - successfully issued logo * 1 - failed to issue logo **/ int lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; spin_lock_irq(shost->host_lock); if (ndlp->nlp_flag & NLP_LOGO_SND) { spin_unlock_irq(shost->host_lock); return 0; } spin_unlock_irq(shost->host_lock); cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_LOGO); if (!elsiocb) 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(vport->fc_myDID); pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue LOGO: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitLOGO++; elsiocb->iocb_cmpl = lpfc_cmpl_els_logo; spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_LOGO_SND; spin_unlock_irq(shost->host_lock); rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; spin_unlock_irq(shost->host_lock); lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_cmpl_els_cmd - Completion callback function for generic els command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is a generic completion callback function for ELS commands. * Specifically, it is the callback function which does not need to perform * any command specific operations. It is currently used by the ELS command * issuing routines for the ELS State Change Request (SCR), * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than * certain debug loggings, this callback function simply invokes the * lpfc_els_chk_latt() routine to check whether link went down during the * discovery process. **/ static void lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; irsp = &rspiocb->iocb; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "ELS cmd cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.elsreq64.remoteID); /* ELS cmd tag completes */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n", irsp->ulpIoTag, irsp->ulpStatus, irsp->un.ulpWord[4], irsp->ulpTimeout); /* Check to see if link went down during discovery */ lpfc_els_chk_latt(vport); lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_issue_els_scr - Issue a scr to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @nportid: N_Port identifier to the remote node. * @retry: number of retries to the command IOCB. * * This routine issues a State Change Request (SCR) to a fabric node * on a @vport. The remote node @nportid is passed into the function. It * first search the @vport node list to find the matching ndlp. If no such * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() * routine is invoked to send the SCR IOCB. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the SCR ELS command. * * Return code * 0 - Successfully issued scr command * 1 - Failed to issue scr command **/ int lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; struct lpfc_nodelist *ndlp; psli = &phba->sli; cmdsize = (sizeof(uint32_t) + sizeof(SCR)); ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) { ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) return 1; lpfc_nlp_init(vport, ndlp, nportid); lpfc_enqueue_node(vport, ndlp); } else if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) return 1; } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_SCR); if (!elsiocb) { /* This will trigger the release of the node just * allocated */ lpfc_nlp_put(ndlp); 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; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue SCR: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitSCR++; elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the rlease of * the node. */ lpfc_nlp_put(ndlp); lpfc_els_free_iocb(phba, elsiocb); return 1; } /* This will cause the callback-function lpfc_cmpl_els_cmd to * trigger the release of node. */ lpfc_nlp_put(ndlp); return 0; } /** * lpfc_issue_els_farpr - Issue a farp to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @nportid: N_Port identifier to the remote node. * @retry: number of retries to the command IOCB. * * This routine issues a Fibre Channel Address Resolution Response * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) * is passed into the function. It first search the @vport node list to find * the matching ndlp. If no such ndlp is found, a new ndlp shall be created * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the PARPR ELS command. * * Return code * 0 - Successfully issued farpr command * 1 - Failed to issue farpr command **/ static int lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; 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; cmdsize = (sizeof(uint32_t) + sizeof(FARP)); ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) { ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) return 1; lpfc_nlp_init(vport, ndlp, nportid); lpfc_enqueue_node(vport, ndlp); } else if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) return 1; } elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, ELS_CMD_RNID); if (!elsiocb) { /* This will trigger the release of the node just * allocated */ lpfc_nlp_put(ndlp); 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(vport->fc_myDID); fp->Rflags = 0; fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ondlp = lpfc_findnode_did(vport, nportid); if (ondlp && NLP_CHK_NODE_ACT(ondlp)) { memcpy(&fp->OportName, &ondlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(&fp->OnodeName, &ondlp->nlp_nodename, sizeof(struct lpfc_name)); } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FARPR: did:x%x", ndlp->nlp_DID, 0, 0); phba->fc_stat.elsXmitFARPR++; elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd; if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the release of * the node. */ lpfc_nlp_put(ndlp); lpfc_els_free_iocb(phba, elsiocb); return 1; } /* This will cause the callback-function lpfc_cmpl_els_cmd to * trigger the release of the node. */ lpfc_nlp_put(ndlp); return 0; } /** * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry * @vport: pointer to a host virtual N_Port data structure. * @nlp: pointer to a node-list data structure. * * This routine cancels the timer with a delayed IOCB-command retry for * a @vport's @ndlp. It stops the timer for the delayed function retrial and * removes the ELS retry event if it presents. In addition, if the * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB * commands are sent for the @vport's nodes that require issuing discovery * ADISC. **/ void lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_work_evt *evtp; if (!(nlp->nlp_flag & NLP_DELAY_TMO)) return; spin_lock_irq(shost->host_lock); nlp->nlp_flag &= ~NLP_DELAY_TMO; spin_unlock_irq(shost->host_lock); del_timer_sync(&nlp->nlp_delayfunc); nlp->nlp_last_elscmd = 0; if (!list_empty(&nlp->els_retry_evt.evt_listp)) { list_del_init(&nlp->els_retry_evt.evt_listp); /* Decrement nlp reference count held for the delayed retry */ evtp = &nlp->els_retry_evt; lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1); } if (nlp->nlp_flag & NLP_NPR_2B_DISC) { spin_lock_irq(shost->host_lock); nlp->nlp_flag &= ~NLP_NPR_2B_DISC; spin_unlock_irq(shost->host_lock); 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); } else { /* Check if there are more PLOGIs to be sent */ lpfc_more_plogi(vport); if (vport->num_disc_nodes == 0) { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NDISC_ACTIVE; spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); lpfc_end_rscn(vport); } } } } return; } /** * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer * @ptr: holder for the pointer to the timer function associated data (ndlp). * * This routine is invoked by the ndlp delayed-function timer to check * whether there is any pending ELS retry event(s) with the node. If not, it * simply returns. Otherwise, if there is at least one ELS delayed event, it * adds the delayed events to the HBA work list and invokes the * lpfc_worker_wake_up() routine to wake up worker thread to process the * event. Note that lpfc_nlp_get() is called before posting the event to * the work list to hold reference count of ndlp so that it guarantees the * reference to ndlp will still be available when the worker thread gets * to the event associated with the ndlp. **/ void lpfc_els_retry_delay(unsigned long ptr) { struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr; struct lpfc_vport *vport = ndlp->vport; struct lpfc_hba *phba = vport->phba; unsigned long flags; struct lpfc_work_evt *evtp = &ndlp->els_retry_evt; spin_lock_irqsave(&phba->hbalock, flags); if (!list_empty(&evtp->evt_listp)) { spin_unlock_irqrestore(&phba->hbalock, flags); return; } /* We need to hold the node by incrementing the reference * count until the queued work is done */ evtp->evt_arg1 = lpfc_nlp_get(ndlp); if (evtp->evt_arg1) { evtp->evt = LPFC_EVT_ELS_RETRY; list_add_tail(&evtp->evt_listp, &phba->work_list); lpfc_worker_wake_up(phba); } spin_unlock_irqrestore(&phba->hbalock, flags); return; } /** * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function * @ndlp: pointer to a node-list data structure. * * This routine is the worker-thread handler for processing the @ndlp delayed * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves * the last ELS command from the associated ndlp and invokes the proper ELS * function according to the delayed ELS command to retry the command. **/ void lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) { struct lpfc_vport *vport = ndlp->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); uint32_t cmd, did, retry; spin_lock_irq(shost->host_lock); did = ndlp->nlp_DID; cmd = ndlp->nlp_last_elscmd; ndlp->nlp_last_elscmd = 0; if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { spin_unlock_irq(shost->host_lock); return; } ndlp->nlp_flag &= ~NLP_DELAY_TMO; spin_unlock_irq(shost->host_lock); /* * If a discovery event readded nlp_delayfunc after timer * firing and before processing the timer, cancel the * nlp_delayfunc. */ del_timer_sync(&ndlp->nlp_delayfunc); retry = ndlp->nlp_retry; ndlp->nlp_retry = 0; switch (cmd) { case ELS_CMD_FLOGI: lpfc_issue_els_flogi(vport, ndlp, retry); break; case ELS_CMD_PLOGI: if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } break; case ELS_CMD_ADISC: if (!lpfc_issue_els_adisc(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); } break; case ELS_CMD_PRLI: if (!lpfc_issue_els_prli(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); } break; case ELS_CMD_LOGO: if (!lpfc_issue_els_logo(vport, ndlp, retry)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); } break; case ELS_CMD_FDISC: lpfc_issue_els_fdisc(vport, ndlp, retry); break; } return; } /** * lpfc_els_retry - Make retry decision on an els command iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine makes a retry decision on an ELS command IOCB, which has * failed. The following ELS IOCBs use this function for retrying the command * when previously issued command responsed with error status: FLOGI, PLOGI, * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the * returned error status, it makes the decision whether a retry shall be * issued for the command, and whether a retry shall be made immediately or * delayed. In the former case, the corresponding ELS command issuing-function * is called to retry the command. In the later case, the ELS command shall * be posted to the ndlp delayed event and delayed function timer set to the * ndlp for the delayed command issusing. * * Return code * 0 - No retry of els command is made * 1 - Immediate or delayed retry of els command is made **/ static int lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); IOCB_t *irsp = &rspiocb->iocb; struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; uint32_t *elscmd; struct ls_rjt stat; int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; int logerr = 0; uint32_t cmd = 0; uint32_t did; /* Note: context2 may be 0 for internal driver abort * of delays ELS command. */ if (pcmd && pcmd->virt) { elscmd = (uint32_t *) (pcmd->virt); cmd = *elscmd++; } if (ndlp && NLP_CHK_NODE_ACT(ndlp)) did = ndlp->nlp_DID; else { /* We should only hit this case for retrying PLOGI */ did = irsp->un.elsreq64.remoteID; ndlp = lpfc_findnode_did(vport, did); if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp)) && (cmd != ELS_CMD_PLOGI)) return 1; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Retry ELS: wd7:x%x wd4:x%x did:x%x", *(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID); 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_FLOGI) { if (PCI_DEVICE_ID_HORNET == phba->pcidev->device) { phba->fc_topology = TOPOLOGY_LOOP; phba->pport->fc_myDID = 0; phba->alpa_map[0] = 0; phba->alpa_map[1] = 0; } } if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0) delay = 1000; retry = 1; break; case IOERR_ILLEGAL_COMMAND: lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0124 Retry illegal cmd x%x " "retry:x%x delay:x%x\n", cmd, cmdiocb->retry, delay); retry = 1; /* All command's retry policy */ maxretry = 8; if (cmdiocb->retry > 2) delay = 1000; break; case IOERR_NO_RESOURCES: logerr = 1; /* HBA out of resources */ retry = 1; if (cmdiocb->retry > 100) delay = 100; maxretry = 250; break; case IOERR_ILLEGAL_FRAME: delay = 100; retry = 1; break; case IOERR_SEQUENCE_TIMEOUT: 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: logerr = 1; /* Fabric / Remote NPort out of resources */ 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 = 1000; maxretry = 48; } retry = 1; break; } if (cmd == ELS_CMD_PLOGI) { delay = 1000; maxretry = lpfc_max_els_tries + 1; retry = 1; break; } if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && (cmd == ELS_CMD_FDISC) && (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0125 FDISC Failed (x%x). " "Fabric out of resources\n", stat.un.lsRjtError); lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_RSCS); } break; case LSRJT_LOGICAL_BSY: if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_PRLI)) { delay = 1000; maxretry = 48; } else if (cmd == ELS_CMD_FDISC) { /* FDISC retry policy */ maxretry = 48; if (cmdiocb->retry >= 32) delay = 1000; } retry = 1; break; case LSRJT_LOGICAL_ERR: /* There are some cases where switches return this * error when they are not ready and should be returning * Logical Busy. We should delay every time. */ if (cmd == ELS_CMD_FDISC && stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { maxretry = 3; delay = 1000; retry = 1; break; } 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_printf_vlog(vport, KERN_ERR, LOG_ELS, "0122 FDISC Failed (x%x). " "Fabric Detected Bad WWN\n", stat.un.lsRjtError); lpfc_vport_set_state(vport, FC_VPORT_FABRIC_REJ_WWN); } break; } break; case IOSTAT_INTERMED_RSP: case IOSTAT_BA_RJT: break; default: break; } if (did == FDMI_DID) retry = 1; if ((cmd == ELS_CMD_FLOGI) && (phba->fc_topology != TOPOLOGY_LOOP) && !lpfc_error_lost_link(irsp)) { /* FLOGI retry policy */ retry = 1; /* retry forever */ maxretry = 0; if (cmdiocb->retry >= 100) delay = 5000; else if (cmdiocb->retry >= 32) delay = 1000; } cmdiocb->retry++; if (maxretry && (cmdiocb->retry >= maxretry)) { phba->fc_stat.elsRetryExceeded++; retry = 0; } if ((vport->load_flag & FC_UNLOADING) != 0) retry = 0; if (retry) { /* Retry ELS command to remote NPORT */ 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)) && ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) || ((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) { /* Don't reset timer for no resources */ /* If discovery / RSCN timer is running, reset it */ if (timer_pending(&vport->fc_disctmo) || (vport->fc_flag & FC_RSCN_MODE)) lpfc_set_disctmo(vport); } phba->fc_stat.elsXmitRetry++; if (ndlp && NLP_CHK_NODE_ACT(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)); spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_DELAY_TMO; spin_unlock_irq(shost->host_lock); ndlp->nlp_prev_state = ndlp->nlp_state; if (cmd == ELS_CMD_PRLI) lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); else lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); ndlp->nlp_last_elscmd = cmd; return 1; } switch (cmd) { case ELS_CMD_FLOGI: lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_FDISC: lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PLOGI: if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); } lpfc_issue_els_plogi(vport, did, cmdiocb->retry); return 1; case ELS_CMD_ADISC: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PRLI: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_LOGO: ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); return 1; } } /* No retry ELS command to remote NPORT */ if (logerr) { lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0137 No retry ELS command x%x to remote " "NPORT x%x: Out of Resources: Error:x%x/%x\n", cmd, did, irsp->ulpStatus, irsp->un.ulpWord[4]); } else { lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0108 No retry ELS command x%x to remote " "NPORT x%x Retried:%d Error:x%x/%x\n", cmd, did, cmdiocb->retry, irsp->ulpStatus, irsp->un.ulpWord[4]); } return 0; } /** * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb * @phba: pointer to lpfc hba data structure. * @buf_ptr1: pointer to the lpfc DMA buffer data structure. * * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) * associated with a command IOCB back to the lpfc DMA buffer pool. It first * checks to see whether there is a lpfc DMA buffer associated with the * response of the command IOCB. If so, it will be released before releasing * the lpfc DMA buffer associated with the IOCB itself. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0) **/ static int lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) { struct lpfc_dmabuf *buf_ptr; /* 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); return 0; } /** * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl * @phba: pointer to lpfc hba data structure. * @buf_ptr: pointer to the lpfc dma buffer data structure. * * This routine releases the lpfc Direct Memory Access (DMA) buffer * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer * pool. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0) **/ static int lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) { lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); kfree(buf_ptr); return 0; } /** * lpfc_els_free_iocb - Free a command iocb and its associated resources * @phba: pointer to lpfc hba data structure. * @elsiocb: pointer to lpfc els command iocb data structure. * * This routine frees a command IOCB and its associated resources. The * command IOCB data structure contains the reference to various associated * resources, these fields must be set to NULL if the associated reference * not present: * context1 - reference to ndlp * context2 - reference to cmd * context2->next - reference to rsp * context3 - reference to bpl * * It first properly decrements the reference count held on ndlp for the * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not * set, it invokes the lpfc_els_free_data() routine to release the Direct * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it * adds the DMA buffer the @phba data structure for the delayed release. * If reference to the Buffer Pointer List (BPL) is present, the * lpfc_els_free_bpl() routine is invoked to release the DMA memory * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is * invoked to release the IOCB data structure back to @phba IOCBQ list. * * Return code * 0 - Success (currently, always return 0) **/ int lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) { struct lpfc_dmabuf *buf_ptr, *buf_ptr1; struct lpfc_nodelist *ndlp; ndlp = (struct lpfc_nodelist *)elsiocb->context1; if (ndlp) { if (ndlp->nlp_flag & NLP_DEFER_RM) { lpfc_nlp_put(ndlp); /* If the ndlp is not being used by another discovery * thread, free it. */ if (!lpfc_nlp_not_used(ndlp)) { /* If ndlp is being used by another discovery * thread, just clear NLP_DEFER_RM */ ndlp->nlp_flag &= ~NLP_DEFER_RM; } } else lpfc_nlp_put(ndlp); elsiocb->context1 = NULL; } /* context2 = cmd, context2->next = rsp, context3 = bpl */ if (elsiocb->context2) { if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) { /* Firmware could still be in progress of DMAing * payload, so don't free data buffer till after * a hbeat. */ elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE; buf_ptr = elsiocb->context2; elsiocb->context2 = NULL; if (buf_ptr) { buf_ptr1 = NULL; spin_lock_irq(&phba->hbalock); if (!list_empty(&buf_ptr->list)) { list_remove_head(&buf_ptr->list, buf_ptr1, struct lpfc_dmabuf, list); INIT_LIST_HEAD(&buf_ptr1->list); list_add_tail(&buf_ptr1->list, &phba->elsbuf); phba->elsbuf_cnt++; } INIT_LIST_HEAD(&buf_ptr->list); list_add_tail(&buf_ptr->list, &phba->elsbuf); phba->elsbuf_cnt++; spin_unlock_irq(&phba->hbalock); } } else { buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2; lpfc_els_free_data(phba, buf_ptr1); } } if (elsiocb->context3) { buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3; lpfc_els_free_bpl(phba, buf_ptr); } lpfc_sli_release_iocbq(phba, elsiocb); return 0; } /** * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the Logout (LOGO) * Accept (ACC) Response ELS command. This routine is invoked to indicate * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to * release the ndlp if it has the last reference remaining (reference count * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1 * field to NULL to inform the following lpfc_els_free_iocb() routine no * ndlp reference count needs to be decremented. Otherwise, the ndlp * reference use-count shall be decremented by the lpfc_els_free_iocb() * routine. Finally, the lpfc_els_free_iocb() is invoked to release the * IOCB data structure. **/ static void lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; irsp = &rspiocb->iocb; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ACC LOGO cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID); /* ACC to LOGO completes to NPort */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0109 ACC to LOGO completes to NPort x%x " "Data: x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); if (ndlp->nlp_state == NLP_STE_NPR_NODE) { /* NPort Recovery mode or node is just allocated */ if (!lpfc_nlp_not_used(ndlp)) { /* If the ndlp is being used by another discovery * thread, just unregister the RPI. */ lpfc_unreg_rpi(vport, ndlp); } else { /* Indicate the node has already released, should * not reference to it from within lpfc_els_free_iocb. */ cmdiocb->context1 = NULL; } } lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi 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 unregister default * RPI (Remote Port Index) mailbox command to the @phba. It simply releases * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and * decrements the ndlp reference count held for this completion callback * function. After that, it invokes the lpfc_nlp_not_used() to check * whether there is only one reference left on the ndlp. If so, it will * perform one more decrement and trigger the release of the ndlp. **/ void lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; /* * This routine is used to register and unregister in previous SLI * modes. */ if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) && (phba->sli_rev == LPFC_SLI_REV4)) lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi); pmb->context1 = NULL; lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); mempool_free(pmb, phba->mbox_mem_pool); if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { lpfc_nlp_put(ndlp); /* This is the end of the default RPI cleanup logic for this * ndlp. If no other discovery threads are using this ndlp. * we should free all resources associated with it. */ lpfc_nlp_not_used(ndlp); } return; } /** * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for ELS Response IOCB * command. In normal case, this callback function just properly sets the * nlp_flag bitmap in the ndlp data structure, if the mbox command reference * field in the command IOCB is not NULL, the referred mailbox command will * be send out, and then invokes the lpfc_els_free_iocb() routine to release * the IOCB. Under error conditions, such as when a LS_RJT is returned or a * link down event occurred during the discovery, the lpfc_nlp_not_used() * routine shall be invoked trying to release the ndlp if no other threads * are currently referring it. **/ static void lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; IOCB_t *irsp; uint8_t *pcmd; LPFC_MBOXQ_t *mbox = NULL; struct lpfc_dmabuf *mp = NULL; uint32_t ls_rjt = 0; irsp = &rspiocb->iocb; if (cmdiocb->context_un.mbox) mbox = cmdiocb->context_un.mbox; /* First determine if this is a LS_RJT cmpl. Note, this callback * function can have cmdiocb->contest1 (ndlp) field set to NULL. */ pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); if (ndlp && NLP_CHK_NODE_ACT(ndlp) && (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) { /* A LS_RJT associated with Default RPI cleanup has its own * separate code path. */ if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI)) ls_rjt = 1; } /* Check to see if link went down during discovery */ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) { if (mbox) { mp = (struct lpfc_dmabuf *) mbox->context1; if (mp) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } mempool_free(mbox, phba->mbox_mem_pool); } if (ndlp && NLP_CHK_NODE_ACT(ndlp) && (ndlp->nlp_flag & NLP_RM_DFLT_RPI)) if (lpfc_nlp_not_used(ndlp)) { ndlp = NULL; /* Indicate the node has already released, * should not reference to it from within * the routine lpfc_els_free_iocb. */ cmdiocb->context1 = NULL; } goto out; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ELS rsp cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], cmdiocb->iocb.un.elsreq64.remoteID); /* ELS response tag completes */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0110 ELS response tag x%x completes " "Data: x%x x%x x%x x%x x%x x%x x%x\n", cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus, rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout, 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)) { lpfc_unreg_rpi(vport, ndlp); /* Increment reference count to ndlp to hold the * reference to ndlp for the callback function. */ mbox->context2 = lpfc_nlp_get(ndlp); mbox->vport = vport; if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; } else { mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); } if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) != MBX_NOT_FINISHED) goto out; else /* Decrement the ndlp reference count we * set for this failed mailbox command. */ lpfc_nlp_put(ndlp); /* ELS rsp: Cannot issue reg_login for */ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0138 ELS rsp: Cannot issue reg_login for x%x " "Data: x%x x%x x%x\n", ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); if (lpfc_nlp_not_used(ndlp)) { ndlp = NULL; /* Indicate node has already been released, * should not reference to it from within * the routine lpfc_els_free_iocb. */ cmdiocb->context1 = NULL; } } else { /* Do not drop node for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(irsp) && ndlp->nlp_flag & NLP_ACC_REGLOGIN) { if (lpfc_nlp_not_used(ndlp)) { ndlp = NULL; /* Indicate node has already been * released, should not reference * to it from within the routine * lpfc_els_free_iocb. */ cmdiocb->context1 = NULL; } } } mp = (struct lpfc_dmabuf *) mbox->context1; if (mp) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); } mempool_free(mbox, phba->mbox_mem_pool); } out: if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI); spin_unlock_irq(shost->host_lock); /* If the node is not being used by another discovery thread, * and we are sending a reject, we are done with it. * Release driver reference count here and free associated * resources. */ if (ls_rjt) if (lpfc_nlp_not_used(ndlp)) /* Indicate node has already been released, * should not reference to it from within * the routine lpfc_els_free_iocb. */ cmdiocb->context1 = NULL; } lpfc_els_free_iocb(phba, cmdiocb); return; } /** * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command * @vport: pointer to a host virtual N_Port data structure. * @flag: the els command code to be accepted. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issues an Accept (ACC) response IOCB * command. It uses the @flag to properly set up the IOCB field for the * specific ACC response command to be issued and invokes the * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a * @mbox pointer is passed in, it will be put into the context_un.mbox * field of the IOCB for the completion callback function to issue the * mailbox command to the HBA later when callback is invoked. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the corresponding response ELS IOCB command. * * Return code * 0 - Successfully issued acc response * 1 - Failed to issue acc response **/ int lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; IOCB_t *oldcmd; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; int rc; ELS_PKT *els_pkt_ptr; psli = &phba->sli; oldcmd = &oldiocb->iocb; switch (flag) { case ELS_CMD_ACC: cmdsize = sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_LOGO_ACC; spin_unlock_irq(shost->host_lock); 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); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; case ELS_CMD_PLOGI: cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) 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, &vport->fc_sparam, sizeof(struct serv_parm)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC PLOGI: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; case ELS_CMD_PRLO: cmdsize = sizeof(uint32_t) + sizeof(PRLO); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); if (!elsiocb) return 1; icmd = &elsiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri */ pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt, sizeof(uint32_t) + sizeof(PRLO)); *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; els_pkt_ptr = (ELS_PKT *) pcmd; els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC PRLO: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); break; default: return 1; } /* Xmit ELS ACC response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0128 Xmit ELS ACC response tag x%x, XRI: x%x, " "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); if (ndlp->nlp_flag & NLP_LOGO_ACC) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_LOGO_ACC; spin_unlock_irq(shost->host_lock); elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc; } else { elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; } phba->fc_stat.elsXmitACC++; rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command * @vport: pointer to a virtual N_Port data structure. * @rejectError: * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issue an Reject (RJT) response IOCB * command. If a @mbox pointer is passed in, it will be put into the * context_un.mbox field of the IOCB for the completion callback function * to issue to the HBA later. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the reject response ELS IOCB command. * * Return code * 0 - Successfully issued reject response * 1 - Failed to issue reject response **/ int lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, LPFC_MBOXQ_t *mbox) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; IOCB_t *oldcmd; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; int rc; psli = &phba->sli; cmdsize = 2 * sizeof(uint32_t); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); if (!elsiocb) 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; if (mbox) elsiocb->context_un.mbox = mbox; /* Xmit ELS RJT response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0129 Xmit ELS RJT x%x response tag x%x " "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " "rpi x%x\n", rejectError, elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue LS_RJT: did:x%x flg:x%x err:x%x", ndlp->nlp_DID, ndlp->nlp_flag, rejectError); phba->fc_stat.elsXmitLSRJT++; elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * 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, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 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 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; ADISC *ap; IOCB_t *icmd, *oldcmd; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; int rc; cmdsize = sizeof(uint32_t) + sizeof(ADISC); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri */ /* Xmit ADISC ACC response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0130 Xmit ADISC ACC response iotag x%x xri: " "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); 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, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); ap->DID = be32_to_cpu(vport->fc_myDID); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC ADISC: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); phba->fc_stat.elsXmitACC++; elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli 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 Process * Login (PRLI) 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, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the PRLI Accept response ELS IOCB command. * * Return code * 0 - Successfully issued acc prli response * 1 - Failed to issue acc prli response **/ int lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; PRLI *npr; lpfc_vpd_t *vpd; IOCB_t *icmd; IOCB_t *oldcmd; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; int rc; psli = &phba->sli; cmdsize = sizeof(uint32_t) + sizeof(PRLI); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK))); if (!elsiocb) return 1; icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri */ /* Xmit PRLI ACC response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0131 Xmit PRLI ACC response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); 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 the remote port is a target and our firmware version is 3.20 or * later, set the following bits for FC-TAPE support. */ if ((ndlp->nlp_type & NLP_FCP_TARGET) && (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; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC PRLI: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); phba->fc_stat.elsXmitACC++; elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command * @vport: pointer to a virtual N_Port data structure. * @format: rnid command format. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a Request Node Identification Data (RNID) Accept * (ACC) response. It constructs the RNID ACC response command according to * the proper @format and then calls the lpfc_sli_issue_iocb() routine to * issue the response. Note that this command does not need to hold the ndlp * reference count for the callback. So, the ndlp reference count taken by * the lpfc_prep_els_iocb() routine is put back and the context1 field of * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that * there is no ndlp reference available. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function. However, for the RNID Accept Response ELS command, * this is undone later by this routine after the IOCB is allocated. * * Return code * 0 - Successfully issued acc rnid response * 1 - Failed to issue acc rnid response **/ static int lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; RNID *rn; IOCB_t *icmd, *oldcmd; struct lpfc_iocbq *elsiocb; struct lpfc_sli *psli; uint8_t *pcmd; uint16_t cmdsize; int rc; psli = &phba->sli; cmdsize = sizeof(uint32_t) + sizeof(uint32_t) + (2 * sizeof(struct lpfc_name)); if (format) cmdsize += sizeof(RNID_TOP_DISC); elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri */ /* Xmit RNID ACC response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0132 Xmit RNID ACC response tag x%x xri x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext); 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, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(&rn->nodeName, &vport->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, &vport->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; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "Issue ACC RNID: did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); phba->fc_stat.elsXmitACC++; elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; lpfc_nlp_put(ndlp); elsiocb->context1 = NULL; /* Don't need ndlp for cmpl, * it could be freed */ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * 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 Scsi_Host *shost = lpfc_shost_from_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 (!NLP_CHK_NODE_ACT(ndlp)) continue; if (ndlp->nlp_state == NLP_STE_NPR_NODE && (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(shost->host_lock); ndlp->nlp_prev_state = ndlp->nlp_state; lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); lpfc_issue_els_adisc(vport, ndlp, 0); sentadisc++; vport->num_disc_nodes++; if (vport->num_disc_nodes >= vport->cfg_discovery_threads) { spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_NLP_MORE; spin_unlock_irq(shost->host_lock); break; } } } if (sentadisc == 0) { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NLP_MORE; spin_unlock_irq(shost->host_lock); } 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 Scsi_Host *shost = lpfc_shost_from_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 (!NLP_CHK_NODE_ACT(ndlp)) continue; if (ndlp->nlp_state == NLP_STE_NPR_NODE && (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { 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) { spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_NLP_MORE; spin_unlock_irq(shost->host_lock); break; } } } if (sentplogi) { lpfc_set_disctmo(vport); } else { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_NLP_MORE; spin_unlock_irq(shost->host_lock); } return sentplogi; } /** * 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; } spin_lock_irq(shost->host_lock); vport->fc_rscn_id_cnt = 0; vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); 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 (vport->fc_flag & FC_RSCN_DISCOVERY) 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; /* Move all affected nodes by pending RSCNs to NPR state. */ list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp) || (ndlp->nlp_state == NLP_STE_UNUSED_NODE) || !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) continue; lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RECOVERY); lpfc_cancel_retry_delay_tmo(vport, ndlp); } return 0; } /** * lpfc_send_rscn_event - Send an RSCN event to management application * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * * lpfc_send_rscn_event sends an RSCN netlink event to management * applications. */ static void lpfc_send_rscn_event(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb) { struct lpfc_dmabuf *pcmd; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); uint32_t *payload_ptr; uint32_t payload_len; struct lpfc_rscn_event_header *rscn_event_data; pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; payload_ptr = (uint32_t *) pcmd->virt; payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + payload_len, GFP_KERNEL); if (!rscn_event_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0147 Failed to allocate memory for RSCN event\n"); return; } rscn_event_data->event_type = FC_REG_RSCN_EVENT; rscn_event_data->payload_length = payload_len; memcpy(rscn_event_data->rscn_payload, payload_ptr, payload_len); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_els_event_header) + payload_len, (char *)rscn_event_data, LPFC_NL_VENDOR_ID); kfree(rscn_event_data); } /** * 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; IOCB_t *icmd; uint32_t payload_len, length, nportid, *cmd; int rscn_cnt; int rscn_id = 0, hba_id = 0; int i; icmd = &cmdiocb->iocb; pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; lp = (uint32_t *) pcmd->virt; 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%x 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]); /* 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%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0; } /* 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%x 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%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0; } } spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */ vport->fc_flag |= FC_RSCN_DISCOVERY; spin_unlock_irq(shost->host_lock); /* 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->context2 to process later. */ if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_RSCN_DEFERRED; if ((rscn_cnt < FC_MAX_HOLD_RSCN) && !(vport->fc_flag & FC_RSCN_DISCOVERY)) { vport->fc_flag |= FC_RSCN_MODE; spin_unlock_irq(shost->host_lock); 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->context2, the calling * routine will not try to free it. */ cmdiocb->context2 = NULL; } /* Deferred RSCN */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0235 Deferred RSCN " "Data: x%x x%x x%x\n", vport->fc_rscn_id_cnt, vport->fc_flag, vport->port_state); } else { vport->fc_flag |= FC_RSCN_DISCOVERY; spin_unlock_irq(shost->host_lock); /* ReDiscovery RSCN */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0234 ReDiscovery RSCN " "Data: x%x x%x 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); spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_RSCN_DEFERRED; spin_unlock_irq(shost->host_lock); return 0; } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN: did:x%x/ste:x%x flg:x%x", ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_RSCN_MODE; spin_unlock_irq(shost->host_lock); 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->context2, the calling routine will * not try to free it. */ cmdiocb->context2 = 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 (vport->load_flag & FC_UNLOADING) { lpfc_els_flush_rscn(vport); return 0; } /* Start timer for RSCN processing */ lpfc_set_disctmo(vport); /* RSCN processed */ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0215 RSCN processed Data: x%x x%x x%x x%x\n", vport->fc_flag, 0, vport->fc_rscn_id_cnt, vport->port_state); /* 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 && NLP_CHK_NODE_ACT(ndlp) && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { /* Good ndlp, issue CT Request to NameServer */ if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 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 */ ndlp = lpfc_findnode_did(vport, NameServer_DID); if (ndlp && NLP_CHK_NODE_ACT(ndlp)) /* Wait for NameServer login cmpl before we can continue */ return 1; if (ndlp) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_PLOGI_ISSUE); if (!ndlp) { lpfc_els_flush_rscn(vport); return 0; } ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; } else { ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) { lpfc_els_flush_rscn(vport); return 0; } lpfc_nlp_init(vport, ndlp, NameServer_DID); 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 = (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(vport); 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 was received from DID in Loop Mode */ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0113 An FLOGI ELS command x%x was " "received from DID x%x in Loop Mode\n", cmd, did); return 1; } did = Fabric_DID; if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3))) { /* For a FLOGI we accept, then if our portname is greater * then the remote portname we initiate Nport login. */ rc = memcmp(&vport->fc_portname, &sp->portName, sizeof(struct lpfc_name)); if (!rc) { mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return 1; 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; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); lpfc_set_loopback_flag(phba); if (rc == MBX_NOT_FINISHED) { mempool_free(mbox, phba->mbox_mem_pool); } return 1; } else if (rc > 0) { /* greater than */ spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_PT2PT_PLOGI; spin_unlock_irq(shost->host_lock); } spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_PT2PT; vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); spin_unlock_irq(shost->host_lock); } 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(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); return 1; } /* Send back ACC */ lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL); 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; 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(vport, 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(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); } return 0; } /** * 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; /* For now, unconditionally reject this command */ 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); return 0; } /** * 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); } /** * lpfc_els_rsp_rps_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 Port Status (RPS) unsolicited IOCB event. It * collects the link statistics from the completion of the MBX_READ_LNK_STAT * mailbox command, constructs the RPS response with the link statistics * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC * response to the RPS. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the RPS Accept Response ELS IOCB command. * **/ static void lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { MAILBOX_t *mb; IOCB_t *icmd; RPS_RSP *rps_rsp; uint8_t *pcmd; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp; uint16_t xri, status; uint32_t cmdsize; mb = &pmb->u.mb; ndlp = (struct lpfc_nodelist *) pmb->context2; xri = (uint16_t) ((unsigned long)(pmb->context1)); pmb->context1 = NULL; pmb->context2 = NULL; if (mb->mbxStatus) { mempool_free(pmb, phba->mbox_mem_pool); return; } cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t); mempool_free(pmb, phba->mbox_mem_pool); elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, lpfc_max_els_tries, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); /* Decrement the ndlp reference count from previous mbox command */ lpfc_nlp_put(ndlp); if (!elsiocb) return; icmd = &elsiocb->iocb; icmd->ulpContext = xri; pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint32_t); /* Skip past command */ rps_rsp = (RPS_RSP *)pcmd; if (phba->fc_topology != TOPOLOGY_LOOP) status = 0x10; else status = 0x8; if (phba->pport->fc_flag & FC_FABRIC) status |= 0x4; rps_rsp->rsvd1 = 0; rps_rsp->portStatus = cpu_to_be16(status); rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); /* Xmit ELS RPS ACC response tag */ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, "0118 Xmit ELS RPS ACC response tag x%x xri x%x, " "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) lpfc_els_free_iocb(phba, elsiocb); return; } /** * lpfc_els_rcv_rps - Process an unsolicited rps 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 Status (RPS) 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_rsp_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_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command * to actually sending out RPS Accept (ACC) response. * * Return codes * 0 - Successfully processed rps iocb (currently always return 0) **/ static int lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp) { struct lpfc_hba *phba = vport->phba; uint32_t *lp; uint8_t flag; LPFC_MBOXQ_t *mbox; struct lpfc_dmabuf *pcmd; RPS *rps; struct ls_rjt stat; if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) /* reject the unsolicited RPS request and done with it */ goto reject_out; pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; lp = (uint32_t *) pcmd->virt; flag = (be32_to_cpu(*lp++) & 0xf); rps = (RPS *) lp; if ((flag == 0) || ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) || ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname, sizeof(struct lpfc_name)) == 0))) { printk("Fix me....\n"); dump_stack(); mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); if (mbox) { lpfc_read_lnk_stat(phba, mbox); mbox->context1 = (void *)((unsigned long) cmdiocb->iocb.ulpContext); mbox->context2 = lpfc_nlp_get(ndlp); mbox->vport = vport; mbox->mbox_cmpl = lpfc_els_rsp_rps_acc; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) != MBX_NOT_FINISHED) /* Mbox completion will send ELS Response */ return 0; /* Decrement reference count used for the failed mbox * command. */ lpfc_nlp_put(ndlp); mempool_free(mbox, phba->mbox_mem_pool); } } reject_out: /* 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); return 0; } /** * 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, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 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) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd, *oldcmd; RPL_RSP rpl_rsp; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1; icmd = &elsiocb->iocb; oldcmd = &oldiocb->iocb; icmd->ulpContext = oldcmd->ulpContext; /* Xri */ pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt); *((uint32_t *) (pcmd)) = ELS_CMD_ACC; pcmd += sizeof(uint16_t); *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); pcmd += sizeof(uint16_t); /* Setup the RPL ACC payload */ rpl_rsp.listLen = be32_to_cpu(1); rpl_rsp.index = 0; rpl_rsp.port_num_blk.portNum = 0; rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, sizeof(struct lpfc_name)); memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); /* Xmit ELS RPL ACC response tag */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0120 Xmit ELS RPL ACC response tag x%x " "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " "rpi x%x\n", elsiocb->iotag, elsiocb->iocb.ulpContext, ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp; phba->fc_stat.elsXmitACC++; if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * 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; } pcmd = (struct lpfc_dmabuf *) cmdiocb->context2; lp = (uint32_t *) pcmd->virt; rpl = (RPL *) (lp + 1); maxsize = be32_to_cpu(rpl->maxsize); /* 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; 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 */ 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) { 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 */ 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 *)((struct lpfc_dmabuf *)cmdiocb->context2)->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_initial_flogi(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_issue_reg_vfi(vport); } } return 0; } /** * lpfc_els_timeout - Handler funciton to the els timer * @ptr: holder for the timer function associated data. * * 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(unsigned long ptr) { struct lpfc_vport *vport = (struct lpfc_vport *) ptr; struct lpfc_hba *phba = vport->phba; uint32_t tmo_posted; unsigned long iflag; spin_lock_irqsave(&vport->work_port_lock, iflag); tmo_posted = vport->work_port_events & WORKER_ELS_TMO; if (!tmo_posted) vport->work_port_events |= WORKER_ELS_TMO; spin_unlock_irqrestore(&vport->work_port_lock, iflag); if (!tmo_posted) 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; spin_lock_irq(&phba->hbalock); timeout = (uint32_t)(phba->fc_ratov << 1); pring = &phba->sli.ring[LPFC_ELS_RING]; list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { cmd = &piocb->iocb; if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 || piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) continue; if (piocb->vport != vport) continue; pcmd = (struct lpfc_dmabuf *) piocb->context2; if (pcmd) els_command = *(uint32_t *) (pcmd->virt); if (els_command == ELS_CMD_FARP || els_command == ELS_CMD_FARPR || els_command == ELS_CMD_FDISC) continue; if (piocb->drvrTimeout > 0) { if (piocb->drvrTimeout >= timeout) piocb->drvrTimeout -= timeout; else piocb->drvrTimeout = 0; continue; } remote_ID = 0xffffffff; if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR) remote_ID = cmd->un.elsreq64.remoteID; else { struct lpfc_nodelist *ndlp; ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext); if (ndlp && NLP_CHK_NODE_ACT(ndlp)) remote_ID = ndlp->nlp_DID; } lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0127 ELS timeout Data: x%x x%x x%x " "x%x\n", els_command, remote_ID, cmd->ulpCommand, cmd->ulpIoTag); lpfc_sli_issue_abort_iotag(phba, pring, piocb); } spin_unlock_irq(&phba->hbalock); if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt) mod_timer(&vport->els_tmofunc, jiffies + HZ * 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(completions); struct lpfc_hba *phba = vport->phba; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; struct lpfc_iocbq *tmp_iocb, *piocb; IOCB_t *cmd = NULL; lpfc_fabric_abort_vport(vport); spin_lock_irq(&phba->hbalock); 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; if (piocb->vport != vport) continue; list_move_tail(&piocb->list, &completions); pring->txq_cnt--; } list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { if (piocb->iocb_flag & LPFC_IO_LIBDFC) { continue; } if (piocb->vport != vport) continue; lpfc_sli_issue_abort_iotag(phba, pring, piocb); } spin_unlock_irq(&phba->hbalock); /* Cancell all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, 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) { LIST_HEAD(completions); struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; struct lpfc_iocbq *tmp_iocb, *piocb; IOCB_t *cmd = NULL; lpfc_fabric_abort_hba(phba); spin_lock_irq(&phba->hbalock); 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; list_move_tail(&piocb->list, &completions); pring->txq_cnt--; } list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { if (piocb->iocb_flag & LPFC_IO_LIBDFC) continue; lpfc_sli_issue_abort_iotag(phba, pring, piocb); } spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); return; } /** * lpfc_send_els_failure_event - Posts an ELS command failure event * @phba: Pointer to hba context object. * @cmdiocbp: Pointer to command iocb which reported error. * @rspiocbp: Pointer to response iocb which reported error. * * This function sends an event when there is an ELS command * failure. **/ void lpfc_send_els_failure_event(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbp, struct lpfc_iocbq *rspiocbp) { struct lpfc_vport *vport = cmdiocbp->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_lsrjt_event lsrjt_event; struct lpfc_fabric_event_header fabric_event; struct ls_rjt stat; struct lpfc_nodelist *ndlp; uint32_t *pcmd; ndlp = cmdiocbp->context1; if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) return; if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) { lsrjt_event.header.event_type = FC_REG_ELS_EVENT; lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); pcmd = (uint32_t *) (((struct lpfc_dmabuf *) cmdiocbp->context2)->virt); lsrjt_event.command = *pcmd; stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]); lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(lsrjt_event), (char *)&lsrjt_event, LPFC_NL_VENDOR_ID); return; } if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) || (rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) { fabric_event.event_type = FC_REG_FABRIC_EVENT; if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; else fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; memcpy(fabric_event.wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(fabric_event), (char *)&fabric_event, LPFC_NL_VENDOR_ID); return; } } /** * lpfc_send_els_event - Posts unsolicited els event * @vport: Pointer to vport object. * @ndlp: Pointer FC node object. * @cmd: ELS command code. * * This function posts an event when there is an incoming * unsolicited ELS command. **/ static void lpfc_send_els_event(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint32_t *payload) { struct lpfc_els_event_header *els_data = NULL; struct lpfc_logo_event *logo_data = NULL; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); if (*payload == ELS_CMD_LOGO) { logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); if (!logo_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0148 Failed to allocate memory " "for LOGO event\n"); return; } els_data = &logo_data->header; } else { els_data = kmalloc(sizeof(struct lpfc_els_event_header), GFP_KERNEL); if (!els_data) { lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0149 Failed to allocate memory " "for ELS event\n"); return; } } els_data->event_type = FC_REG_ELS_EVENT; switch (*payload) { case ELS_CMD_PLOGI: els_data->subcategory = LPFC_EVENT_PLOGI_RCV; break; case ELS_CMD_PRLO: els_data->subcategory = LPFC_EVENT_PRLO_RCV; break; case ELS_CMD_ADISC: els_data->subcategory = LPFC_EVENT_ADISC_RCV; break; case ELS_CMD_LOGO: els_data->subcategory = LPFC_EVENT_LOGO_RCV; /* Copy the WWPN in the LOGO payload */ memcpy(logo_data->logo_wwpn, &payload[2], sizeof(struct lpfc_name)); break; default: kfree(els_data); return; } memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); if (*payload == ELS_CMD_LOGO) { fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_logo_event), (char *)logo_data, LPFC_NL_VENDOR_ID); kfree(logo_data); } else { fc_host_post_vendor_event(shost, fc_get_event_number(), sizeof(struct lpfc_els_event_header), (char *)els_data, LPFC_NL_VENDOR_ID); kfree(els_data); } return; } /** * 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 Scsi_Host *shost; struct lpfc_nodelist *ndlp; struct ls_rjt stat; uint32_t *payload; uint32_t cmd, did, newnode, rjt_err = 0; IOCB_t *icmd = &elsiocb->iocb; if (!vport || !(elsiocb->context2)) goto dropit; newnode = 0; payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt; cmd = *payload; if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) lpfc_post_buffer(phba, pring, 1); did = icmd->un.rcvels.remoteID; if (icmd->ulpStatus) { lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV Unsol ELS: status:x%x/x%x did:x%x", icmd->ulpStatus, icmd->un.ulpWord[4], did); goto dropit; } /* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto dropit; /* Ignore traffic received during vport shutdown. */ if (vport->load_flag & FC_UNLOADING) goto dropit; ndlp = lpfc_findnode_did(vport, did); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */ ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) goto dropit; lpfc_nlp_init(vport, ndlp, did); 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 (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); 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) { /* This is similar to the new node path */ ndlp = lpfc_nlp_get(ndlp); if (!ndlp) goto dropit; lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); newnode = 1; } phba->fc_stat.elsRcvFrame++; elsiocb->context1 = lpfc_nlp_get(ndlp); elsiocb->vport = vport; if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { cmd &= ELS_CMD_MASK; } /* ELS command received from NPORT */ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0112 ELS command x%x received from NPORT x%x " "Data: x%x\n", cmd, did, vport->port_state); switch (cmd) { case ELS_CMD_PLOGI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PLOGI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPLOGI++; ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); lpfc_send_els_event(vport, ndlp, payload); if (vport->port_state < LPFC_DISC_AUTH) { if (!(phba->pport->fc_flag & FC_PT2PT) || (phba->pport->fc_flag & FC_PT2PT_PLOGI)) { rjt_err = LSRJT_UNABLE_TPC; break; } /* We get here, and drop thru, if we are PT2PT with * another NPort and the other side has initiated * the PLOGI before responding to our FLOGI. */ } shost = lpfc_shost_from_vport(vport); spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; spin_unlock_irq(shost->host_lock); lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PLOGI); break; case ELS_CMD_FLOGI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FLOGI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFLOGI++; lpfc_els_rcv_flogi(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); 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%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvLOGO++; lpfc_send_els_event(vport, ndlp, payload); if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); break; case ELS_CMD_PRLO: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PRLO: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPRLO++; lpfc_send_els_event(vport, ndlp, payload); if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); break; case ELS_CMD_RSCN: phba->fc_stat.elsRcvRSCN++; lpfc_els_rcv_rscn(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_ADISC: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV ADISC: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); lpfc_send_els_event(vport, ndlp, payload); phba->fc_stat.elsRcvADISC++; if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_ADISC); break; case ELS_CMD_PDISC: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PDISC: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPDISC++; if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PDISC); break; case ELS_CMD_FARPR: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FARPR: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFARPR++; lpfc_els_rcv_farpr(vport, elsiocb, ndlp); break; case ELS_CMD_FARP: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FARP: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFARP++; lpfc_els_rcv_farp(vport, elsiocb, ndlp); break; case ELS_CMD_FAN: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV FAN: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvFAN++; lpfc_els_rcv_fan(vport, elsiocb, ndlp); break; case ELS_CMD_PRLI: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV PRLI: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvPRLI++; if (vport->port_state < LPFC_DISC_AUTH) { rjt_err = LSRJT_UNABLE_TPC; break; } lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); break; case ELS_CMD_LIRR: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV LIRR: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvLIRR++; lpfc_els_rcv_lirr(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RPS: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RPS: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRPS++; lpfc_els_rcv_rps(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RPL: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RPL: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRPL++; lpfc_els_rcv_rpl(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RNID: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RNID: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRNID++; lpfc_els_rcv_rnid(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; case ELS_CMD_RRQ: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RRQ: did:x%x/ste:x%x flg:x%x", did, vport->port_state, ndlp->nlp_flag); phba->fc_stat.elsRcvRRQ++; lpfc_els_rcv_rrq(vport, elsiocb, ndlp); if (newnode) lpfc_nlp_put(ndlp); break; default: lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", cmd, did, vport->port_state); /* Unsupported ELS command, reject */ rjt_err = LSRJT_INVALID_CMD; /* Unknown ELS command received from NPORT */ 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_nlp_put(ndlp); break; } /* 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 = LSEXP_NOTHING_MORE; lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, NULL); } lpfc_nlp_put(elsiocb->context1); elsiocb->context1 = NULL; return; dropit: if (vport && !(vport->load_flag & FC_UNLOADING)) lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0111 Dropping received ELS cmd " "Data: x%x x%x x%x\n", icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout); phba->fc_stat.elsRcvDrop++; } /** * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier * @phba: pointer to lpfc hba data structure. * @vpi: host virtual N_Port identifier. * * This routine finds a vport on a HBA (referred by @phba) through a * @vpi. The function walks the HBA's vport list and returns the address * of the vport with the matching @vpi. * * Return code * NULL - No vport with the matching @vpi found * Otherwise - Address to the vport with the matching @vpi. **/ struct lpfc_vport * lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi) { struct lpfc_vport *vport; unsigned long flags; spin_lock_irqsave(&phba->hbalock, flags); list_for_each_entry(vport, &phba->port_list, listentry) { if (vport->vpi == vpi) { spin_unlock_irqrestore(&phba->hbalock, flags); return vport; } } spin_unlock_irqrestore(&phba->hbalock, flags); return NULL; } /** * 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 = phba->pport; IOCB_t *icmd = &elsiocb->iocb; dma_addr_t paddr; struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2; struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3; elsiocb->context1 = NULL; elsiocb->context2 = NULL; elsiocb->context3 = NULL; if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) { lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); } else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT && (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) { phba->fc_stat.NoRcvBuf++; /* Not enough posted buffers; Try posting more buffers */ if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) lpfc_post_buffer(phba, pring, 0); return; } if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX || icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { if (icmd->unsli3.rcvsli3.vpi == 0xffff) vport = phba->pport; else vport = lpfc_find_vport_by_vpid(phba, icmd->unsli3.rcvsli3.vpi - phba->vpi_base); } /* 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 */ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { elsiocb->context2 = bdeBuf1; } else { paddr = getPaddr(icmd->un.cont64[0].addrHigh, icmd->un.cont64[0].addrLow); elsiocb->context2 = 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 context2 to NULL. */ if (elsiocb->context2) { lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2); elsiocb->context2 = NULL; } /* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */ if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) && icmd->ulpBdeCount == 2) { elsiocb->context2 = bdeBuf2; lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); /* free mp if we are done with it */ if (elsiocb->context2) { lpfc_in_buf_free(phba, elsiocb->context2); elsiocb->context2 = NULL; } } } /** * 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, *ndlp_fdmi; ndlp = lpfc_findnode_did(vport, NameServer_DID); if (!ndlp) { ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) { if (phba->fc_topology == TOPOLOGY_LOOP) { lpfc_disc_start(vport); return; } lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0251 NameServer login: no memory\n"); return; } lpfc_nlp_init(vport, ndlp, NameServer_DID); } else if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) { if (phba->fc_topology == TOPOLOGY_LOOP) { lpfc_disc_start(vport); return; } lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0348 NameServer login: node freed\n"); return; } } ndlp->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0252 Cannot issue NameServer login\n"); return; } if (vport->cfg_fdmi_on) { ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (ndlp_fdmi) { lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID); ndlp_fdmi->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp_fdmi, NLP_STE_PLOGI_ISSUE); lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID, 0); } } 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 = (struct lpfc_nodelist *) pmb->context2; MAILBOX_t *mb = &pmb->u.mb; spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); if (mb->mbxStatus) { lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, "0915 Register VPI failed: 0x%x\n", mb->mbxStatus); 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); spin_lock_irq(shost->host_lock); vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); spin_unlock_irq(shost->host_lock); lpfc_can_disctmo(vport); break; default: /* Try to recover from this error */ lpfc_mbx_unreg_vpi(vport); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); if (vport->port_type == LPFC_PHYSICAL_PORT) lpfc_initial_flogi(vport); else lpfc_initial_fdisc(vport); break; } } else { vport->vpi_state |= LPFC_VPI_REGISTERED; if (vport == phba->pport) if (phba->sli_rev < LPFC_SLI_REV4) lpfc_issue_fabric_reglogin(vport); else lpfc_issue_reg_vfi(vport); else lpfc_do_scr_ns_plogi(phba, vport); } /* Now, we decrement the ndlp reference count held for this * callback function */ lpfc_nlp_put(ndlp); mempool_free(pmb, phba->mbox_mem_pool); 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. **/ static void lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); LPFC_MBOXQ_t *mbox; mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (mbox) { lpfc_reg_vpi(vport, mbox); mbox->vport = vport; mbox->context2 = lpfc_nlp_get(ndlp); mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == MBX_NOT_FINISHED) { /* mailbox command not success, decrement ndlp * reference count for this command */ lpfc_nlp_put(ndlp); mempool_free(mbox, phba->mbox_mem_pool); lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, "0253 Register VPI: Can't send mbox\n"); goto mbox_err_exit; } } else { lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, "0254 Register VPI: no memory\n"); goto mbox_err_exit; } return; mbox_err_exit: lpfc_vport_set_state(vport, FC_VPORT_FAILED); spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); return; } /** * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to a Fabric Discover * (FDISC) ELS command. Since all the FDISC ELS commands are issued * single threaded, each FDISC completion callback function will reset * the discovery timer for all vports such that the timers will not get * unnecessary timeout. The function checks the FDISC IOCB status. If error * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID * assigned to the vport has been changed with the completion of the FDISC * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) * are unregistered from the HBA, and then the lpfc_register_new_vport() * routine is invoked to register new vport with the HBA. Otherwise, the * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name * Server for State Change Request (SCR). **/ static void lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np; IOCB_t *irsp = &rspiocb->iocb; struct lpfc_iocbq *piocb; lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0123 FDISC completes. x%x/x%x prevDID: x%x\n", irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID); /* Since all FDISCs are being single threaded, we * must reset the discovery timer for ALL vports * waiting to send FDISC when one completes. */ list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { lpfc_set_disctmo(piocb->vport); } lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "FDISC cmpl: status:x%x/x%x prevdid:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID); if (irsp->ulpStatus) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) goto out; /* FDISC failed */ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0126 FDISC failed. (%d/%d)\n", irsp->ulpStatus, irsp->un.ulpWord[4]); goto fdisc_failed; } spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_FABRIC; if (vport->phba->fc_topology == TOPOLOGY_LOOP) vport->fc_flag |= FC_PUBLIC_LOOP; spin_unlock_irq(shost->host_lock); vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID; lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); if ((vport->fc_prevDID != vport->fc_myDID) && !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { /* If our NportID changed, we need to ensure all * remaining NPORTs get unreg_login'ed so we can * issue unreg_vpi. */ list_for_each_entry_safe(np, next_np, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp) || (np->nlp_state != NLP_STE_NPR_NODE) || !(np->nlp_flag & NLP_NPR_ADISC)) continue; spin_lock_irq(shost->host_lock); np->nlp_flag &= ~NLP_NPR_ADISC; spin_unlock_irq(shost->host_lock); lpfc_unreg_rpi(vport, np); } lpfc_mbx_unreg_vpi(vport); spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); } if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) lpfc_register_new_vport(phba, vport, ndlp); else lpfc_do_scr_ns_plogi(phba, vport); goto out; fdisc_failed: lpfc_vport_set_state(vport, FC_VPORT_FAILED); /* Cancel discovery timer */ lpfc_can_disctmo(vport); lpfc_nlp_put(ndlp); out: lpfc_els_free_iocb(phba, cmdiocb); } /** * lpfc_issue_els_fdisc - Issue a fdisc iocb command * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine prepares and issues a Fabric Discover (FDISC) IOCB to * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() * routine to issue the IOCB, which makes sure only one outstanding fabric * IOCB will be sent off HBA at any given time. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the FDISC ELS command. * * Return code * 0 - Successfully issued fdisc iocb command * 1 - Failed to issue fdisc iocb command **/ static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, uint8_t retry) { struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; struct serv_parm *sp; uint8_t *pcmd; uint16_t cmdsize; int did = ndlp->nlp_DID; int rc; vport->port_state = LPFC_FDISC; cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, ELS_CMD_FDISC); if (!elsiocb) { lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0255 Issue FDISC: no IOCB\n"); return 1; } icmd = &elsiocb->iocb; icmd->un.elsreq64.myID = 0; icmd->un.elsreq64.fl = 1; if (phba->sli_rev == LPFC_SLI_REV4) { /* FDISC needs to be 1 for WQE VPI */ elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1; elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ; /* Set the ulpContext to the vpi */ elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base; } else { /* For FDISC, Let FDISC rsp set the NPortID for this VPI */ icmd->ulpCt_h = 1; icmd->ulpCt_l = 0; } pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; pcmd += sizeof(uint32_t); /* CSP Word 1 */ memcpy(pcmd, &vport->phba->pport->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; pcmd += sizeof(uint32_t); /* CSP Word 2 */ pcmd += sizeof(uint32_t); /* CSP Word 3 */ pcmd += sizeof(uint32_t); /* CSP Word 4 */ pcmd += sizeof(uint32_t); /* Port Name */ memcpy(pcmd, &vport->fc_portname, 8); pcmd += sizeof(uint32_t); /* Node Name */ pcmd += sizeof(uint32_t); /* Node Name */ memcpy(pcmd, &vport->fc_nodename, 8); lpfc_set_disctmo(vport); phba->fc_stat.elsXmitFDISC++; elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue FDISC: did:x%x", did, 0, 0); rc = lpfc_issue_fabric_iocb(phba, elsiocb); if (rc == IOCB_ERROR) { lpfc_els_free_iocb(phba, elsiocb); lpfc_vport_set_state(vport, FC_VPORT_FAILED); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0256 Issue FDISC: Cannot send IOCB\n"); return 1; } lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); return 0; } /** * lpfc_cmpl_els_npiv_logo - Completion function with vport logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the issuing of a LOGO * ELS command off a vport. It frees the command IOCB and then decrement the * reference count held on ndlp for this completion function, indicating that * the reference to the ndlp is no long needed. Note that the * lpfc_els_free_iocb() routine decrements the ndlp reference held for this * callback function and an additional explicit ndlp reference decrementation * will trigger the actual release of the ndlp. **/ static void lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct lpfc_vport *vport = cmdiocb->vport; IOCB_t *irsp; struct lpfc_nodelist *ndlp; ndlp = (struct lpfc_nodelist *)cmdiocb->context1; irsp = &rspiocb->iocb; lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "LOGO npiv cmpl: status:x%x/x%x did:x%x", irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID); lpfc_els_free_iocb(phba, cmdiocb); vport->unreg_vpi_cmpl = VPORT_ERROR; /* Trigger the release of the ndlp after logo */ lpfc_nlp_put(ndlp); } /** * lpfc_issue_els_npiv_logo - Issue a logo off a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a LOGO ELS command to an @ndlp off a @vport. * * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp * will be incremented by 1 for holding the ndlp and the reference to ndlp * will be stored into the context1 field of the IOCB for the completion * callback function to the LOGO ELS command. * * Return codes * 0 - Successfully issued logo off the @vport * 1 - Failed to issue logo off the @vport **/ int lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; IOCB_t *icmd; struct lpfc_iocbq *elsiocb; uint8_t *pcmd; uint16_t cmdsize; cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, ELS_CMD_LOGO); if (!elsiocb) 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(vport->fc_myDID); pcmd += sizeof(uint32_t); memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue LOGO npiv did:x%x flg:x%x", ndlp->nlp_DID, ndlp->nlp_flag, 0); elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo; spin_lock_irq(shost->host_lock); ndlp->nlp_flag |= NLP_LOGO_SND; spin_unlock_irq(shost->host_lock); if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR) { spin_lock_irq(shost->host_lock); ndlp->nlp_flag &= ~NLP_LOGO_SND; spin_unlock_irq(shost->host_lock); lpfc_els_free_iocb(phba, elsiocb); return 1; } return 0; } /** * lpfc_fabric_block_timeout - Handler function to the fabric block timer * @ptr: holder for the timer function associated data. * * This routine is invoked by the fabric iocb block timer after * timeout. It posts the fabric iocb block timeout event by setting the * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes * lpfc_worker_wake_up() routine to wake up the worker thread. It is for * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the * posted event WORKER_FABRIC_BLOCK_TMO. **/ void lpfc_fabric_block_timeout(unsigned long ptr) { struct lpfc_hba *phba = (struct lpfc_hba *) ptr; unsigned long iflags; uint32_t tmo_posted; spin_lock_irqsave(&phba->pport->work_port_lock, iflags); tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; if (!tmo_posted) phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); if (!tmo_posted) lpfc_worker_wake_up(phba); return; } /** * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list * @phba: pointer to lpfc hba data structure. * * This routine issues one fabric iocb from the driver internal list to * the HBA. It first checks whether it's ready to issue one fabric iocb to * the HBA (whether there is no outstanding fabric iocb). If so, it shall * remove one pending fabric iocb from the driver internal list and invokes * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. **/ static void lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) { struct lpfc_iocbq *iocb; unsigned long iflags; int ret; IOCB_t *cmd; 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_iocb_cmpl = iocb->iocb_cmpl; iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; iocb->iocb_flag |= LPFC_IO_FABRIC; lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, "Fabric sched1: ste:x%x", iocb->vport->port_state, 0, 0); ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); if (ret == IOCB_ERROR) { iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; iocb->fabric_iocb_cmpl = NULL; iocb->iocb_flag &= ~LPFC_IO_FABRIC; cmd = &iocb->iocb; cmd->ulpStatus = IOSTAT_LOCAL_REJECT; cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; iocb->iocb_cmpl(phba, iocb, iocb); atomic_dec(&phba->fabric_iocb_count); goto repeat; } } return; } /** * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine unblocks the issuing fabric iocb command. The function * will clear the fabric iocb block bit and then invoke the routine * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb * from the driver internal fabric iocb list. **/ void lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) { clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); lpfc_resume_fabric_iocbs(phba); return; } /** * lpfc_block_fabric_iocbs - Block issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine blocks the issuing fabric iocb for a specified amount of * time (currently 100 ms). This is done by set the fabric iocb block bit * and set up a timeout timer for 100ms. When the block bit is set, no more * fabric iocb will be issued out of the HBA. **/ static void lpfc_block_fabric_iocbs(struct lpfc_hba *phba) { int blocked; blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); /* Start a timer to unblock fabric iocbs after 100ms */ if (!blocked) mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 ); return; } /** * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the callback function that is put to the fabric iocb's * callback function pointer (iocb->iocb_cmpl). The original iocb's callback * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback * function first restores and invokes the original iocb's callback function * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next * fabric bound iocb from the driver internal fabric iocb list onto the wire. **/ static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb) { struct ls_rjt stat; if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC) BUG(); switch (rspiocb->iocb.ulpStatus) { case IOSTAT_NPORT_RJT: case IOSTAT_FABRIC_RJT: if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) { lpfc_block_fabric_iocbs(phba); } break; case IOSTAT_NPORT_BSY: case IOSTAT_FABRIC_BSY: lpfc_block_fabric_iocbs(phba); break; case IOSTAT_LS_RJT: stat.un.lsRjtError = be32_to_cpu(rspiocb->iocb.un.ulpWord[4]); if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) lpfc_block_fabric_iocbs(phba); break; } if (atomic_read(&phba->fabric_iocb_count) == 0) BUG(); cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl; cmdiocb->fabric_iocb_cmpl = NULL; cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC; cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb); 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); } } /** * lpfc_issue_fabric_iocb - Issue a fabric iocb command * @phba: pointer to lpfc hba data structure. * @iocb: pointer to lpfc command iocb data structure. * * This routine is used as the top-level API for issuing a fabric iocb command * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver * function makes sure that only one fabric bound iocb will be outstanding at * any given time. As such, this function will first check to see whether there * is already an outstanding fabric iocb on the wire. If so, it will put the * newly issued iocb onto the driver internal fabric iocb list, waiting to be * issued later. Otherwise, it will issue the iocb on the wire and update the * fabric iocb count it indicate that there is one fabric iocb on the wire. * * Note, this implementation has a potential sending out fabric IOCBs out of * order. The problem is caused by the construction of the "ready" boolen does * not include the condition that the internal fabric IOCB list is empty. As * such, it is possible a fabric IOCB issued by this routine might be "jump" * ahead of the fabric IOCBs in the internal list. * * Return code * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully * IOCB_ERROR - failed to issue fabric iocb **/ static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) { unsigned long iflags; int ready; int ret; if (atomic_read(&phba->fabric_iocb_count) > 1) BUG(); spin_lock_irqsave(&phba->hbalock, iflags); ready = atomic_read(&phba->fabric_iocb_count) == 0 && !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 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_iocb_cmpl = iocb->iocb_cmpl; iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb; iocb->iocb_flag |= LPFC_IO_FABRIC; lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, "Fabric sched2: ste:x%x", iocb->vport->port_state, 0, 0); ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); if (ret == IOCB_ERROR) { iocb->iocb_cmpl = iocb->fabric_iocb_cmpl; iocb->fabric_iocb_cmpl = NULL; iocb->iocb_flag &= ~LPFC_IO_FABRIC; atomic_dec(&phba->fabric_iocb_count); } } else { spin_lock_irqsave(&phba->hbalock, iflags); list_add_tail(&iocb->list, &phba->fabric_iocb_list); spin_unlock_irqrestore(&phba->hbalock, iflags); ret = IOCB_SUCCESS; } return ret; } /** * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list * @vport: pointer to a virtual N_Port data structure. * * This routine aborts all the IOCBs associated with a @vport from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @vport off the list, set the * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB. **/ static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) { LIST_HEAD(completions); struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *tmp_iocb, *piocb; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, list) { if (piocb->vport != vport) continue; list_move_tail(&piocb->list, &completions); } spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list * @ndlp: pointer to a node-list data structure. * * This routine aborts all the IOCBs associated with an @ndlp from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @ndlp off the list, set the * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB. **/ void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) { LIST_HEAD(completions); struct lpfc_hba *phba = ndlp->phba; struct lpfc_iocbq *tmp_iocb, *piocb; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; spin_lock_irq(&phba->hbalock); list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, list) { if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { list_move_tail(&piocb->list, &completions); } } spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list * @phba: pointer to lpfc hba data structure. * * This routine aborts all the IOCBs currently on the driver internal * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS * IOCB ring. This function takes the entire IOCB list off the fabric IOCB * list, removes IOCBs off the list, set the status feild to * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with * the IOCB. **/ void lpfc_fabric_abort_hba(struct lpfc_hba *phba) { LIST_HEAD(completions); spin_lock_irq(&phba->hbalock); list_splice_init(&phba->fabric_iocb_list, &completions); spin_unlock_irq(&phba->hbalock); /* Cancel all the IOCBs from the completions list */ lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); } /** * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort * @phba: pointer to lpfc hba data structure. * @axri: pointer to the els xri abort wcqe structure. * * This routine is invoked by the worker thread to process a SLI4 slow-path * ELS aborted xri. **/ void lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, struct sli4_wcqe_xri_aborted *axri) { uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; unsigned long iflag = 0; spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, iflag); list_for_each_entry_safe(sglq_entry, sglq_next, &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { if (sglq_entry->sli4_xritag == xri) { list_del(&sglq_entry->list); spin_unlock_irqrestore( &phba->sli4_hba.abts_sgl_list_lock, iflag); spin_lock_irqsave(&phba->hbalock, iflag); list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list); spin_unlock_irqrestore(&phba->hbalock, iflag); return; } } spin_unlock_irqrestore(&phba->sli4_hba.abts_sgl_list_lock, iflag); }