| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2004-2012 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 <linux/blkdev.h> |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_transport_fc.h> |
| |
| #include "lpfc_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 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 */ |
| if (lpfc_readl(phba->HAregaddr, &ha_copy)) |
| return 1; |
| |
| 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 immediately 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 |= |
| ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) |
| & LPFC_FIP_ELS_ID_MASK); |
| break; |
| case ELS_CMD_FDISC: |
| elsiocb->iocb_flag |= |
| ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) |
| & LPFC_FIP_ELS_ID_MASK); |
| break; |
| case ELS_CMD_LOGO: |
| elsiocb->iocb_flag |= |
| ((LPFC_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 = phba->vpi_ids[vport->vpi]; |
| 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 <elsCmd> to remote NPORT <did> */ |
| 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 <elsCmd> to remote NPORT <did> */ |
| 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, |
| ndlp->nlp_rpi); |
| 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 SLI4 port only. |
| * |
| * Return code |
| * 0 - successfully issued REG_VFI for @vport |
| * A failure code otherwise. |
| **/ |
| 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; |
| /* move forward in case of SLI4 FC port loopback test */ |
| if ((phba->sli_rev == LPFC_SLI_REV4) && |
| !(phba->link_flag & LS_LOOPBACK_MODE)) { |
| 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_issue_unreg_vfi - Unregister VFI for this vport's fabric login |
| * @vport: pointer to a host virtual N_Port data structure. |
| * |
| * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for |
| * the @vport. This mailbox command is necessary for SLI4 port only. |
| * |
| * Return code |
| * 0 - successfully issued REG_VFI for @vport |
| * A failure code otherwise. |
| **/ |
| int |
| lpfc_issue_unreg_vfi(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct Scsi_Host *shost; |
| LPFC_MBOXQ_t *mboxq; |
| int rc; |
| |
| mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mboxq) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, |
| "2556 UNREG_VFI mbox allocation failed" |
| "HBA state x%x\n", phba->pport->port_state); |
| return -ENOMEM; |
| } |
| |
| lpfc_unreg_vfi(mboxq, vport); |
| mboxq->vport = vport; |
| mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl; |
| |
| rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, |
| "2557 UNREG_VFI issue mbox failed rc x%x " |
| "HBA state x%x\n", |
| rc, phba->pport->port_state); |
| mempool_free(mboxq, phba->mbox_mem_pool); |
| return -EIO; |
| } |
| |
| shost = lpfc_shost_from_vport(vport); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_VFI_REGISTERED; |
| spin_unlock_irq(shost->host_lock); |
| return 0; |
| } |
| |
| /** |
| * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @sp: pointer to service parameter data structure. |
| * |
| * This routine is called from FLOGI/FDISC completion handler functions. |
| * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric |
| * node nodename is changed in the completion service parameter else return |
| * 0. This function also set flag in the vport data structure to delay |
| * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit |
| * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric |
| * node nodename is changed in the completion service parameter. |
| * |
| * Return code |
| * 0 - FCID and Fabric Nodename and Fabric portname is not changed. |
| * 1 - FCID or Fabric Nodename or Fabric portname is changed. |
| * |
| **/ |
| static uint8_t |
| lpfc_check_clean_addr_bit(struct lpfc_vport *vport, |
| struct serv_parm *sp) |
| { |
| uint8_t fabric_param_changed = 0; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| if ((vport->fc_prevDID != vport->fc_myDID) || |
| memcmp(&vport->fabric_portname, &sp->portName, |
| sizeof(struct lpfc_name)) || |
| memcmp(&vport->fabric_nodename, &sp->nodeName, |
| sizeof(struct lpfc_name))) |
| fabric_param_changed = 1; |
| |
| /* |
| * Word 1 Bit 31 in common service parameter is overloaded. |
| * Word 1 Bit 31 in FLOGI request is multiple NPort request |
| * Word 1 Bit 31 in FLOGI response is clean address bit |
| * |
| * If fabric parameter is changed and clean address bit is |
| * cleared delay nport discovery if |
| * - vport->fc_prevDID != 0 (not initial discovery) OR |
| * - lpfc_delay_discovery module parameter is set. |
| */ |
| if (fabric_param_changed && !sp->cmn.clean_address_bit && |
| (vport->fc_prevDID || lpfc_delay_discovery)) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_DISC_DELAYED; |
| spin_unlock_irq(shost->host_lock); |
| } |
| |
| return fabric_param_changed; |
| } |
| |
| |
| /** |
| * 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; |
| uint8_t fabric_param_changed; |
| |
| 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_edtovResol = sp->cmn.edtovResolution; |
| phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; |
| |
| if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_PUBLIC_LOOP; |
| spin_unlock_irq(shost->host_lock); |
| } |
| |
| 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; |
| |
| fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); |
| memcpy(&vport->fabric_portname, &sp->portName, |
| sizeof(struct lpfc_name)); |
| memcpy(&vport->fabric_nodename, &sp->nodeName, |
| sizeof(struct lpfc_name)); |
| 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); |
| spin_lock_irq(&phba->hbalock); |
| phba->link_flag |= LS_NPIV_FAB_SUPPORTED; |
| spin_unlock_irq(&phba->hbalock); |
| } else { |
| /* Because we asked f/w for NPIV it still expects us |
| to call reg_vnpid 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"); |
| spin_lock_irq(&phba->hbalock); |
| phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; |
| spin_unlock_irq(&phba->hbalock); |
| } |
| } |
| |
| if (fabric_param_changed && |
| !(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); |
| } |
| lpfc_cleanup_pending_mbox(vport); |
| |
| if (phba->sli_rev == LPFC_SLI_REV4) { |
| lpfc_sli4_unreg_all_rpis(vport); |
| lpfc_mbx_unreg_vpi(vport); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; |
| /* |
| * If VPI is unreged, driver need to do INIT_VPI |
| * before re-registering |
| */ |
| vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; |
| spin_unlock_irq(shost->host_lock); |
| } |
| } else if ((phba->sli_rev == LPFC_SLI_REV4) && |
| !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { |
| /* |
| * Driver needs to re-reg VPI in order for f/w |
| * to update the MAC address. |
| */ |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); |
| lpfc_register_new_vport(phba, vport, ndlp); |
| return 0; |
| } |
| |
| 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->fc_flag & FC_VPORT_NEEDS_REG_VPI)) && |
| (vport->vpi_state & LPFC_VPI_REGISTERED)) { |
| lpfc_start_fdiscs(phba); |
| lpfc_do_scr_ns_plogi(phba, vport); |
| } else if (vport->fc_flag & FC_VFI_REGISTERED) |
| lpfc_issue_init_vpi(vport); |
| else { |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "3135 Need register VFI: (x%x/%x)\n", |
| vport->fc_prevDID, vport->fc_myDID); |
| 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; |
| uint16_t fcf_index; |
| 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) { |
| /* |
| * In case of FIP mode, perform roundrobin FCF failover |
| * due to new FCF discovery |
| */ |
| if ((phba->hba_flag & HBA_FIP_SUPPORT) && |
| (phba->fcf.fcf_flag & FCF_DISCOVERY)) { |
| if (phba->link_state < LPFC_LINK_UP) |
| goto stop_rr_fcf_flogi; |
| if ((phba->fcoe_cvl_eventtag_attn == |
| phba->fcoe_cvl_eventtag) && |
| (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && |
| (irsp->un.ulpWord[4] == IOERR_SLI_ABORTED)) |
| goto stop_rr_fcf_flogi; |
| else |
| phba->fcoe_cvl_eventtag_attn = |
| phba->fcoe_cvl_eventtag; |
| lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, |
| "2611 FLOGI failed on FCF (x%x), " |
| "status:x%x/x%x, tmo:x%x, perform " |
| "roundrobin FCF failover\n", |
| phba->fcf.current_rec.fcf_indx, |
| irsp->ulpStatus, irsp->un.ulpWord[4], |
| irsp->ulpTimeout); |
| lpfc_sli4_set_fcf_flogi_fail(phba, |
| phba->fcf.current_rec.fcf_indx); |
| fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); |
| rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index); |
| if (rc) |
| goto out; |
| } |
| |
| stop_rr_fcf_flogi: |
| /* FLOGI failure */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2858 FLOGI failure Status:x%x/x%x TMO:x%x\n", |
| irsp->ulpStatus, irsp->un.ulpWord[4], |
| irsp->ulpTimeout); |
| |
| /* Check for retry */ |
| if (lpfc_els_retry(phba, cmdiocb, rspiocb)) |
| goto out; |
| |
| /* FLOGI failure */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n", |
| irsp->ulpStatus, irsp->un.ulpWord[4], |
| irsp->ulpTimeout); |
| |
| /* 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; |
| if ((phba->sli_rev == LPFC_SLI_REV4) && |
| (!(vport->fc_flag & FC_VFI_REGISTERED) || |
| (vport->fc_prevDID != vport->fc_myDID))) { |
| if (vport->fc_flag & FC_VFI_REGISTERED) |
| lpfc_sli4_unreg_all_rpis(vport); |
| lpfc_issue_reg_vfi(vport); |
| lpfc_nlp_put(ndlp); |
| goto out; |
| } |
| goto flogifail; |
| } |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_VPORT_CVL_RCVD; |
| vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; |
| spin_unlock_irq(shost->host_lock); |
| |
| /* |
| * 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 if (!(phba->hba_flag & HBA_FCOE_MODE)) |
| rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); |
| else { |
| lpfc_printf_vlog(vport, KERN_ERR, |
| LOG_FIP | LOG_ELS, |
| "2831 FLOGI response with cleared Fabric " |
| "bit fcf_index 0x%x " |
| "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " |
| "Fabric Name " |
| "%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| phba->fcf.current_rec.fcf_indx, |
| phba->fcf.current_rec.switch_name[0], |
| phba->fcf.current_rec.switch_name[1], |
| phba->fcf.current_rec.switch_name[2], |
| phba->fcf.current_rec.switch_name[3], |
| phba->fcf.current_rec.switch_name[4], |
| phba->fcf.current_rec.switch_name[5], |
| phba->fcf.current_rec.switch_name[6], |
| phba->fcf.current_rec.switch_name[7], |
| phba->fcf.current_rec.fabric_name[0], |
| phba->fcf.current_rec.fabric_name[1], |
| phba->fcf.current_rec.fabric_name[2], |
| phba->fcf.current_rec.fabric_name[3], |
| phba->fcf.current_rec.fabric_name[4], |
| phba->fcf.current_rec.fabric_name[5], |
| phba->fcf.current_rec.fabric_name[6], |
| phba->fcf.current_rec.fabric_name[7]); |
| lpfc_nlp_put(ndlp); |
| spin_lock_irq(&phba->hbalock); |
| phba->fcf.fcf_flag &= ~FCF_DISCOVERY; |
| phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); |
| spin_unlock_irq(&phba->hbalock); |
| goto out; |
| } |
| if (!rc) { |
| /* Mark the FCF discovery process done */ |
| if (phba->hba_flag & HBA_FIP_SUPPORT) |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | |
| LOG_ELS, |
| "2769 FLOGI to FCF (x%x) " |
| "completed successfully\n", |
| phba->fcf.current_rec.fcf_indx); |
| spin_lock_irq(&phba->hbalock); |
| phba->fcf.fcf_flag &= ~FCF_DISCOVERY; |
| phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); |
| spin_unlock_irq(&phba->hbalock); |
| 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->cmn.virtual_fabric_support = 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) { |
| if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == |
| LPFC_SLI_INTF_IF_TYPE_0) { |
| 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; |
| } else |
| sp->cmn.request_multiple_Nport = 0; |
| } |
| |
| if (phba->fc_topology != LPFC_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 <nlp_DID> */ |
| 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) { |
| 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 0; |
| } |
| 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 <num_disc_nodes> PLOGIs to go */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0232 Continue discovery with %d PLOGIs to go " |
| "Data: x%x x%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; |
| int put_node; |
| int put_rport; |
| struct lpfc_node_rrqs rrq; |
| |
| /* 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; |
| memset(&rrq.xri_bitmap, 0, sizeof(new_ndlp->active_rrqs.xri_bitmap)); |
| |
| 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; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| memcpy(&rrq.xri_bitmap, |
| &new_ndlp->active_rrqs.xri_bitmap, |
| sizeof(new_ndlp->active_rrqs.xri_bitmap)); |
| } else { |
| keepDID = new_ndlp->nlp_DID; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| memcpy(&rrq.xri_bitmap, |
| &new_ndlp->active_rrqs.xri_bitmap, |
| sizeof(new_ndlp->active_rrqs.xri_bitmap)); |
| } |
| |
| lpfc_unreg_rpi(vport, new_ndlp); |
| new_ndlp->nlp_DID = ndlp->nlp_DID; |
| new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| memcpy(new_ndlp->active_rrqs.xri_bitmap, |
| &ndlp->active_rrqs.xri_bitmap, |
| sizeof(ndlp->active_rrqs.xri_bitmap)); |
| |
| 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; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| memcpy(&ndlp->active_rrqs.xri_bitmap, |
| &rrq.xri_bitmap, |
| sizeof(ndlp->active_rrqs.xri_bitmap)); |
| lpfc_drop_node(vport, ndlp); |
| } |
| else { |
| lpfc_unreg_rpi(vport, ndlp); |
| /* Two ndlps cannot have the same did */ |
| ndlp->nlp_DID = keepDID; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| memcpy(&ndlp->active_rrqs.xri_bitmap, |
| &rrq.xri_bitmap, |
| sizeof(ndlp->active_rrqs.xri_bitmap)); |
| /* Since we are swapping the ndlp passed in with the new one |
| * and the did has already been swapped, copy over the |
| * state and names. |
| */ |
| memcpy(&new_ndlp->nlp_portname, &ndlp->nlp_portname, |
| sizeof(struct lpfc_name)); |
| memcpy(&new_ndlp->nlp_nodename, &ndlp->nlp_nodename, |
| sizeof(struct lpfc_name)); |
| new_ndlp->nlp_state = ndlp->nlp_state; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); |
| /* Fix up the rport accordingly */ |
| rport = ndlp->rport; |
| if (rport) { |
| rdata = rport->dd_data; |
| put_node = rdata->pnode != NULL; |
| put_rport = ndlp->rport != NULL; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| if (put_node) |
| lpfc_nlp_put(ndlp); |
| if (put_rport) |
| put_device(&rport->dev); |
| } |
| } |
| 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_rrq - Completion handled for els RRQs. |
| * @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 will call the clear rrq function to free the rrq and |
| * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not |
| * exist then the clear_rrq is still called because the rrq needs to |
| * be freed. |
| **/ |
| |
| static void |
| lpfc_cmpl_els_rrq(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; |
| struct lpfc_node_rrq *rrq; |
| |
| /* we pass cmdiocb to state machine which needs rspiocb as well */ |
| rrq = cmdiocb->context_un.rrq; |
| cmdiocb->context_un.rsp_iocb = rspiocb; |
| |
| irsp = &rspiocb->iocb; |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "RRQ 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) || ndlp != rrq->ndlp) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2882 RRQ 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; |
| } |
| |
| /* rrq completes to NPort <nlp_DID> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "2880 RRQ 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, rrq->xritag, rrq->rxid); |
| |
| if (irsp->ulpStatus) { |
| /* Check for retry */ |
| /* RRQ failed Don't print the vport to vport rjts */ |
| if (irsp->ulpStatus != IOSTAT_LS_RJT || |
| (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && |
| ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || |
| (phba)->pport->cfg_log_verbose & LOG_ELS) |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2881 RRQ failure DID:%06X Status:x%x/x%x\n", |
| ndlp->nlp_DID, irsp->ulpStatus, |
| irsp->un.ulpWord[4]); |
| } |
| out: |
| if (rrq) |
| lpfc_clr_rrq_active(phba, rrq->xritag, rrq); |
| lpfc_els_free_iocb(phba, cmdiocb); |
| return; |
| } |
| /** |
| * 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 response 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 <nlp_DID> */ |
| 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 Don't print the vport to vport rjts */ |
| if (irsp->ulpStatus != IOSTAT_LS_RJT || |
| (((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) && |
| ((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) || |
| (phba)->pport->cfg_log_verbose & LOG_ELS) |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2753 PLOGI failure DID:%06X Status:x%x/x%x\n", |
| ndlp->nlp_DID, irsp->ulpStatus, |
| irsp->un.ulpWord[4]); |
| /* 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 we are a N-port connected to a Fabric, fix-up paramm's so logins |
| * to device on remote loops work. |
| */ |
| if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP)) |
| sp->cmn.altBbCredit = 1; |
| |
| 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 <nlp_DID> */ |
| 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 */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2754 PRLI failure DID:%06X Status:x%x/x%x\n", |
| ndlp->nlp_DID, irsp->ulpStatus, |
| irsp->un.ulpWord[4]); |
| /* 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 <num_disc_nodes> ADISCs to go */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0210 Continue discovery with %d ADISCs to go " |
| "Data: x%x x%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 <nlp_DID> */ |
| 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 */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2755 ADISC failure DID:%06X Status:x%x/x%x\n", |
| ndlp->nlp_DID, irsp->ulpStatus, |
| irsp->un.ulpWord[4]); |
| /* 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; |
| struct lpfcMboxq *mbox; |
| |
| 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 <nlp_DID> */ |
| 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 */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "2756 LOGO failure DID:%06X Status:x%x/x%x\n", |
| ndlp->nlp_DID, irsp->ulpStatus, |
| irsp->un.ulpWord[4]); |
| /* 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); |
| /* If we are in pt2pt mode, we could rcv new S_ID on PLOGI */ |
| if ((vport->fc_flag & FC_PT2PT) && |
| !(vport->fc_flag & FC_PT2PT_PLOGI)) { |
| phba->pport->fc_myDID = 0; |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mbox) { |
| lpfc_config_link(phba, mbox); |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| mbox->vport = vport; |
| if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == |
| MBX_NOT_FINISHED) { |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| } |
| } |
| return; |
| } |
| |
| /** |
| * 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 <ulpIoTag> 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: |
| if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)) |
| 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: |
| break; |
| case IOSTAT_REMOTE_STOP: |
| if (phba->sli_rev == LPFC_SLI_REV4) { |
| /* This IO was aborted by the target, we don't |
| * know the rxid and because we did not send the |
| * ABTS we cannot generate and RRQ. |
| */ |
| lpfc_set_rrq_active(phba, ndlp, |
| cmdiocb->sli4_xritag, 0, 0); |
| } |
| 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 = LPFC_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 (stat.un.b.lsRjtRsnCodeExp == |
| LSEXP_CANT_GIVE_DATA) { |
| 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 != LPFC_TOPOLOGY_LOOP) && |
| !lpfc_error_lost_link(irsp)) { |
| /* FLOGI retry policy */ |
| retry = 1; |
| /* retry FLOGI forever */ |
| maxretry = 0; |
| if (cmdiocb->retry >= 100) |
| delay = 5000; |
| else if (cmdiocb->retry >= 32) |
| delay = 1000; |
| } else if ((cmd == ELS_CMD_FDISC) && !lpfc_error_lost_link(irsp)) { |
| /* retry FDISCs every second up to devloss */ |
| retry = 1; |
| maxretry = vport->cfg_devloss_tmo; |
| 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) { |
| if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { |
| /* Stop retrying PLOGI and FDISC if in FCF discovery */ |
| if (phba->fcf.fcf_flag & FCF_DISCOVERY) { |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "2849 Stop retry ELS command " |
| "x%x to remote NPORT x%x, " |
| "Data: x%x x%x\n", cmd, did, |
| cmdiocb->retry, delay); |
| return 0; |
| } |
| } |
| |
| /* Retry ELS command <elsCmd> to remote NPORT <did> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "0107 Retry ELS command x%x to remote " |
| "NPORT x%x Data: x%x x%x\n", |
| cmd, did, cmdiocb->retry, delay); |
| |
| if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && |
| ((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 <elsCmd> to remote NPORT <did> */ |
| 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 <nlp_DID> */ |
| 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; |
| } |
| } |
| |
| /* |
| * The driver received a LOGO from the rport and has ACK'd it. |
| * At this point, the driver is done so release the IOCB |
| */ |
| lpfc_els_free_iocb(phba, cmdiocb); |
| |
| /* |
| * Remove the ndlp reference if it's a fabric node that has |
| * sent us an unsolicted LOGO. |
| */ |
| if (ndlp->nlp_type & NLP_FABRIC) |
| lpfc_nlp_put(ndlp); |
| |
| 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; |
| |
| pmb->context1 = NULL; |
| pmb->context2 = 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 <ulpIoTag> 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 <NPortid> */ |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| 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 <ulpIoTag> */ |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| 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 <err> response tag <ulpIoTag> */ |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| |
| /* Xmit ADISC ACC response tag <ulpIoTag> */ |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| |
| /* Xmit PRLI ACC response tag <ulpIoTag> */ |
| 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| |
| /* Xmit RNID ACC response tag <ulpIoTag> */ |
| 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; |
| |
| 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_clear_rrq - Clear the rq that this rrq describes. |
| * @vport: pointer to a virtual N_Port data structure. |
| * @iocb: pointer to the lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * Return |
| **/ |
| static void |
| lpfc_els_clear_rrq(struct lpfc_vport *vport, |
| struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| uint8_t *pcmd; |
| struct RRQ *rrq; |
| uint16_t rxid; |
| uint16_t xri; |
| struct lpfc_node_rrq *prrq; |
| |
| |
| pcmd = (uint8_t *) (((struct lpfc_dmabuf *) iocb->context2)->virt); |
| pcmd += sizeof(uint32_t); |
| rrq = (struct RRQ *)pcmd; |
| rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); |
| rxid = bf_get(rrq_rxid, rrq); |
| |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" |
| " x%x x%x\n", |
| be32_to_cpu(bf_get(rrq_did, rrq)), |
| bf_get(rrq_oxid, rrq), |
| rxid, |
| iocb->iotag, iocb->iocb.ulpContext); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, |
| "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", |
| ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); |
| if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) |
| xri = bf_get(rrq_oxid, rrq); |
| else |
| xri = rxid; |
| prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); |
| if (prrq) |
| lpfc_clr_rrq_active(phba, xri, prrq); |
| return; |
| } |
| |
| /** |
| * lpfc_els_rsp_echo_acc - Issue echo acc response |
| * @vport: pointer to a virtual N_Port data structure. |
| * @data: pointer to echo data to return in the accept. |
| * @oldiocb: pointer to the original lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * Return code |
| * 0 - Successfully issued acc echo response |
| * 1 - Failed to issue acc echo response |
| **/ |
| static int |
| lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, |
| struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_iocbq *elsiocb; |
| struct lpfc_sli *psli; |
| uint8_t *pcmd; |
| uint16_t cmdsize; |
| int rc; |
| |
| psli = &phba->sli; |
| cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; |
| |
| /* The accumulated length can exceed the BPL_SIZE. For |
| * now, use this as the limit |
| */ |
| if (cmdsize > LPFC_BPL_SIZE) |
| cmdsize = LPFC_BPL_SIZE; |
| elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, |
| ndlp->nlp_DID, ELS_CMD_ACC); |
| if (!elsiocb) |
| return 1; |
| |
| elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext; /* Xri / rx_id */ |
| elsiocb->iocb.unsli3.rcvsli3.ox_id = oldiocb->iocb.unsli3.rcvsli3.ox_id; |
| |
| /* Xmit ECHO ACC response tag <ulpIoTag> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "2876 Xmit ECHO 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); |
| memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, |
| "Issue ACC ECHO: 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_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 == LPFC_TOPOLOGY_LOOP) { |
| /* We should never receive a FLOGI in loop mode, ignore it */ |
| did = icmd->un.elsreq64.remoteID; |
| |
| /* An FLOGI ELS command <elsCmd> was received from DID <did> in |
| Loop Mode */ |
| lpfc_printf_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, 1))) { |
| /* 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) { |
| if (phba->sli_rev < LPFC_SLI_REV4) { |
| 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 { |
| /* abort the flogi coming back to ourselves |
| * due to external loopback on the port. |
| */ |
| lpfc_els_abort_flogi(phba); |
| return 0; |
| } |
| } else if (rc > 0) { /* greater than */ |
| 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_echo - Process an unsolicited echo iocb |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @cmdiocb: pointer to lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * Return code |
| * 0 - Successfully processed echo iocb (currently always return 0) |
| **/ |
| static int |
| lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_nodelist *ndlp) |
| { |
| uint8_t *pcmd; |
| |
| pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt); |
| |
| /* skip over first word of echo command to find echo data */ |
| pcmd += sizeof(uint32_t); |
| |
| lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); |
| 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); |
| if (vport->phba->sli_rev == LPFC_SLI_REV4) |
| lpfc_els_clear_rrq(vport, cmdiocb, ndlp); |
| } |
| |
| /** |
| * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd |
| * @phba: pointer to lpfc hba data structure. |
| * @pmb: pointer to the driver internal queue element for mailbox command. |
| * |
| * This routine is the completion callback function for the MBX_READ_LNK_STAT |
| * mailbox command. This callback function is to actually send the Accept |
| * (ACC) response to a Read 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_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| MAILBOX_t *mb; |
| IOCB_t *icmd; |
| struct RLS_RSP *rls_rsp; |
| uint8_t *pcmd; |
| struct lpfc_iocbq *elsiocb; |
| struct lpfc_nodelist *ndlp; |
| uint16_t oxid; |
| uint16_t rxid; |
| uint32_t cmdsize; |
| |
| mb = &pmb->u.mb; |
| |
| ndlp = (struct lpfc_nodelist *) pmb->context2; |
| rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff); |
| oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff); |
| pmb->context1 = NULL; |
| pmb->context2 = NULL; |
| |
| if (mb->mbxStatus) { |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| cmdsize = sizeof(struct RLS_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 = rxid; |
| icmd->unsli3.rcvsli3.ox_id = oxid; |
| |
| pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); |
| *((uint32_t *) (pcmd)) = ELS_CMD_ACC; |
| pcmd += sizeof(uint32_t); /* Skip past command */ |
| rls_rsp = (struct RLS_RSP *)pcmd; |
| |
| rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); |
| rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); |
| rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); |
| rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); |
| rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); |
| rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); |
| |
| /* Xmit ELS RLS ACC response tag <ulpIoTag> */ |
| lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, |
| "2874 Xmit ELS RLS 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); |
| } |
| |
| /** |
| * 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 status; |
| uint16_t oxid; |
| uint16_t rxid; |
| uint32_t cmdsize; |
| |
| mb = &pmb->u.mb; |
| |
| ndlp = (struct lpfc_nodelist *) pmb->context2; |
| rxid = (uint16_t) ((unsigned long)(pmb->context1) & 0xffff); |
| oxid = (uint16_t) (((unsigned long)(pmb->context1) >> 16) & 0xffff); |
| 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 = rxid; |
| icmd->unsli3.rcvsli3.ox_id = oxid; |
| |
| 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 != LPFC_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 <ulpIoTag> */ |
| 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_rls - Process an unsolicited rls iocb |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @cmdiocb: pointer to lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * This routine processes Read Port Status (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 state or NLP_STE_MAPPED_NODE |
| * state, it invokes the lpfc_els_rsl_reject() routine to send the reject |
| * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command |
| * for reading the HBA link statistics. It is for the callback function, |
| * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command |
| * to actually sending out RPL Accept (ACC) response. |
| * |
| * Return codes |
| * 0 - Successfully processed rls iocb (currently always return 0) |
| **/ |
| static int |
| lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mbox; |
| struct lpfc_dmabuf *pcmd; |
| 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; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); |
| if (mbox) { |
| lpfc_read_lnk_stat(phba, mbox); |
| mbox->context1 = (void *)((unsigned long) |
| ((cmdiocb->iocb.unsli3.rcvsli3.ox_id << 16) | |
| cmdiocb->iocb.ulpContext)); /* rx_id */ |
| mbox->context2 = lpfc_nlp_get(ndlp); |
| mbox->vport = vport; |
| mbox->mbox_cmpl = lpfc_els_rsp_rls_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_rcv_rtv - Process an unsolicited rtv iocb |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @cmdiocb: pointer to lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * This routine processes Read Timout Value (RTV) IOCB received as an |
| * ELS unsolicited event. It first checks the remote port state. If the |
| * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE |
| * state, it invokes the lpfc_els_rsl_reject() routine to send the reject |
| * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout |
| * Value (RTV) unsolicited IOCB event. |
| * |
| * Note that, 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. |
| * |
| * Return codes |
| * 0 - Successfully processed rtv iocb (currently always return 0) |
| **/ |
| static int |
| lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, |
| struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct ls_rjt stat; |
| struct RTV_RSP *rtv_rsp; |
| uint8_t *pcmd; |
| struct lpfc_iocbq *elsiocb; |
| uint32_t cmdsize; |
| |
| |
| 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; |
| |
| cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); |
| elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, |
| lpfc_max_els_tries, ndlp, |
| ndlp->nlp_DID, ELS_CMD_ACC); |
| |
| if (!elsiocb) |
| return 1; |
| |
| pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); |
| *((uint32_t *) (pcmd)) = ELS_CMD_ACC; |
| pcmd += sizeof(uint32_t); /* Skip past command */ |
| |
| /* use the command's xri in the response */ |
| elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext; /* Xri / rx_id */ |
| elsiocb->iocb.unsli3.rcvsli3.ox_id = cmdiocb->iocb.unsli3.rcvsli3.ox_id; |
| |
| rtv_rsp = (struct RTV_RSP *)pcmd; |
| |
| /* populate RTV payload */ |
| rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ |
| rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); |
| bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); |
| bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ |
| rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); |
| |
| /* Xmit ELS RLS ACC response tag <ulpIoTag> */ |
| lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, |
| "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " |
| "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " |
| "Data: x%x x%x x%x\n", |
| elsiocb->iotag, elsiocb->iocb.ulpContext, |
| ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, |
| ndlp->nlp_rpi, |
| rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); |
| 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 0; |
| |
| 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_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.unsli3.rcvsli3.ox_id << 16) | |
| cmdiocb->iocb.ulpContext)); /* rx_id */ |
| 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_issue_els_rrq - Process an unsolicited rps iocb |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * @did: DID of the target. |
| * @rrq: Pointer to the rrq struct. |
| * |
| * Build a ELS RRQ command and send it to the target. If the issue_iocb is |
| * Successful the the completion handler will clear the RRQ. |
| * |
| * Return codes |
| * 0 - Successfully sent rrq els iocb. |
| * 1 - Failed to send rrq els iocb. |
| **/ |
| static int |
| lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| uint32_t did, struct lpfc_node_rrq *rrq) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct RRQ *els_rrq; |
| IOCB_t *icmd; |
| struct lpfc_iocbq *elsiocb; |
| uint8_t *pcmd; |
| uint16_t cmdsize; |
| int ret; |
| |
| |
| if (ndlp != rrq->ndlp) |
| ndlp = rrq->ndlp; |
| if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) |
| return 1; |
| |
| /* If ndlp is not NULL, we will bump the reference count on it */ |
| cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); |
| elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, |
| ELS_CMD_RRQ); |
| if (!elsiocb) |
| return 1; |
| |
| icmd = &elsiocb->iocb; |
| pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt); |
| |
| /* For RRQ request, remainder of payload is Exchange IDs */ |
| *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; |
| pcmd += sizeof(uint32_t); |
| els_rrq = (struct RRQ *) pcmd; |
| |
| bf_set(rrq_oxid, els_rrq, rrq->xritag); |
| bf_set(rrq_rxid, els_rrq, rrq->rxid); |
| bf_set(rrq_did, els_rrq, vport->fc_myDID); |
| els_rrq->rrq = cpu_to_be32(els_rrq->rrq); |
| els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); |
| |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "Issue RRQ: did:x%x", |
| did, rrq->xritag, rrq->rxid); |
| elsiocb->context_un.rrq = rrq; |
| elsiocb->iocb_cmpl = lpfc_cmpl_els_rrq; |
| 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_send_rrq - Sends ELS RRQ if needed. |
| * @phba: pointer to lpfc hba data structure. |
| * @rrq: pointer to the active rrq. |
| * |
| * This routine will call the lpfc_issue_els_rrq if the rrq is |
| * still active for the xri. If this function returns a failure then |
| * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. |
| * |
| * Returns 0 Success. |
| * 1 Failure. |
| **/ |
| int |
| lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) |
| { |
| struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, |
| rrq->nlp_DID); |
| if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) |
| return lpfc_issue_els_rrq(rrq->vport, ndlp, |
| rrq->nlp_DID, rrq); |
| else |
| return 1; |
| } |
| |
| /** |
| * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @cmdsize: size of the ELS command. |
| * @oldiocb: pointer to the original lpfc command iocb data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. |
| * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. |
| * |
| * Note that, 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 / rx_id */ |
| icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; |
| |
| 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 <ulpIoTag> */ |
| 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 <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 <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_issue_init_vfi(vport); |
| } else { |
| /* FAN verified - skip FLOGI */ |
| vport->fc_myDID = vport->fc_prevDID; |
| if (phba->sli_rev < LPFC_SLI_REV4) |
| lpfc_issue_fabric_reglogin(vport); |
| else { |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "3138 Need register VFI: (x%x/%x)\n", |
| vport->fc_prevDID, vport->fc_myDID); |
| lpfc_issue_reg_vfi(vport); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * lpfc_els_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; |
| LIST_HEAD(txcmplq_completions); |
| LIST_HEAD(abort_list); |
| |
| |
| timeout = (uint32_t)(phba->fc_ratov << 1); |
| |
| pring = &phba->sli.ring[LPFC_ELS_RING]; |
| |
| spin_lock_irq(&phba->hbalock); |
| list_splice_init(&pring->txcmplq, &txcmplq_completions); |
| spin_unlock_irq(&phba->hbalock); |
| |
| list_for_each_entry_safe(piocb, tmp_iocb, &txcmplq_completions, 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; |
| } |
| list_add_tail(&piocb->dlist, &abort_list); |
| } |
| spin_lock_irq(&phba->hbalock); |
| list_splice(&txcmplq_completions, &pring->txcmplq); |
| spin_unlock_irq(&phba->hbalock); |
| |
| list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { |
| 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); |
| spin_lock_irq(&phba->hbalock); |
| list_del_init(&piocb->dlist); |
| 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 != NULL) ? *pcmd : 0; |
| 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; |
| |
| /* If NPort discovery is delayed drop incoming ELS */ |
| if ((vport->fc_flag & FC_DISC_DELAYED) && |
| (cmd != ELS_CMD_PLOGI)) |
| goto dropit; |
| |
| ndlp = lpfc_findnode_did(vport, did); |
| if (!ndlp) { |
| /* Cannot find existing Fabric ndlp, so allocate a new one */ |
| ndlp = 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 <elsCmd> received from NPORT <did> */ |
| 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 Nport discovery is delayed, reject PLOGIs */ |
| if (vport->fc_flag & FC_DISC_DELAYED) { |
| rjt_err = LSRJT_UNABLE_TPC; |
| break; |
| } |
| 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_RLS: |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, |
| "RCV RLS: did:x%x/ste:x%x flg:x%x", |
| did, vport->port_state, ndlp->nlp_flag); |
| |
| phba->fc_stat.elsRcvRLS++; |
| lpfc_els_rcv_rls(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_RTV: |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, |
| "RCV RTV: did:x%x/ste:x%x flg:x%x", |
| did, vport->port_state, ndlp->nlp_flag); |
| phba->fc_stat.elsRcvRTV++; |
| lpfc_els_rcv_rtv(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; |
| case ELS_CMD_ECHO: |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, |
| "RCV ECHO: did:x%x/ste:x%x flg:x%x", |
| did, vport->port_state, ndlp->nlp_flag); |
| |
| phba->fc_stat.elsRcvECHO++; |
| lpfc_els_rcv_echo(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_CMD_UNSUPPORTED; |
| |
| /* Unknown ELS command <elsCmd> received from NPORT <did> */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "0115 Unknown ELS command x%x " |
| "received from NPORT x%x\n", cmd, did); |
| if (newnode) |
| lpfc_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_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); |
| } |
| |
| /* 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; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| /* |
| * If lpfc_delay_discovery parameter is set and the clean address |
| * bit is cleared and fc fabric parameters chenged, delay FC NPort |
| * discovery. |
| */ |
| spin_lock_irq(shost->host_lock); |
| if (vport->fc_flag & FC_DISC_DELAYED) { |
| spin_unlock_irq(shost->host_lock); |
| mod_timer(&vport->delayed_disc_tmo, |
| jiffies + HZ * phba->fc_ratov); |
| return; |
| } |
| spin_unlock_irq(shost->host_lock); |
| |
| ndlp = lpfc_findnode_did(vport, NameServer_DID); |
| if (!ndlp) { |
| ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); |
| if (!ndlp) { |
| if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { |
| lpfc_disc_start(vport); |
| return; |
| } |
| lpfc_vport_set_state(vport, FC_VPORT_FAILED); |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_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 == LPFC_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) { |
| /* If this is the first time, allocate an ndlp and initialize |
| * it. Otherwise, make sure the node is enabled and then do the |
| * login. |
| */ |
| ndlp_fdmi = lpfc_findnode_did(vport, FDMI_DID); |
| if (!ndlp_fdmi) { |
| 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; |
| } else |
| return; |
| } |
| if (!NLP_CHK_NODE_ACT(ndlp_fdmi)) |
| ndlp_fdmi = lpfc_enable_node(vport, |
| ndlp_fdmi, |
| NLP_STE_NPR_NODE); |
| |
| if (ndlp_fdmi) { |
| lpfc_nlp_set_state(vport, ndlp_fdmi, |
| NLP_STE_PLOGI_ISSUE); |
| lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID, 0); |
| } |
| } |
| } |
| |
| /** |
| * 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; |
| int rc; |
| |
| 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 : Status: x%x" |
| " upd bit: x%x \n", mb->mbxStatus, |
| mb->un.varRegVpi.upd); |
| if (phba->sli_rev == LPFC_SLI_REV4 && |
| mb->un.varRegVpi.upd) |
| goto mbox_err_exit ; |
| |
| 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; |
| /* If reg_vpi fail with invalid VPI status, re-init VPI */ |
| case 0x20: |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; |
| spin_unlock_irq(shost->host_lock); |
| lpfc_init_vpi(phba, pmb, vport->vpi); |
| pmb->vport = vport; |
| pmb->mbox_cmpl = lpfc_init_vpi_cmpl; |
| rc = lpfc_sli_issue_mbox(phba, pmb, |
| MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_vlog(vport, |
| KERN_ERR, LOG_MBOX, |
| "2732 Failed to issue INIT_VPI" |
| " mailbox command\n"); |
| } else { |
| lpfc_nlp_put(ndlp); |
| return; |
| } |
| |
| default: |
| /* Try to recover from this error */ |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| lpfc_sli4_unreg_all_rpis(vport); |
| lpfc_mbx_unreg_vpi(vport); |
| 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 |
| && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) |
| lpfc_issue_init_vfi(vport); |
| else |
| lpfc_initial_fdisc(vport); |
| break; |
| } |
| } else { |
| spin_lock_irq(shost->host_lock); |
| vport->vpi_state |= LPFC_VPI_REGISTERED; |
| spin_unlock_irq(shost->host_lock); |
| if (vport == phba->pport) { |
| if (phba->sli_rev < LPFC_SLI_REV4) |
| lpfc_issue_fabric_reglogin(vport); |
| else { |
| /* |
| * If the physical port is instantiated using |
| * FDISC, do not start vport discovery. |
| */ |
| if (vport->port_state != LPFC_FDISC) |
| lpfc_start_fdiscs(phba); |
| lpfc_do_scr_ns_plogi(phba, vport); |
| } |
| } else |
| lpfc_do_scr_ns_plogi(phba, vport); |
| } |
| mbox_err_exit: |
| /* Now, we decrement the ndlp reference count held for this |
| * callback function |
| */ |
| lpfc_nlp_put(ndlp); |
| |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| /** |
| * lpfc_register_new_vport - Register a new vport with a HBA |
| * @phba: pointer to lpfc hba data structure. |
| * @vport: pointer to a host virtual N_Port data structure. |
| * @ndlp: pointer to a node-list data structure. |
| * |
| * This routine registers the @vport as a new virtual port with a HBA. |
| * It is done through a registering vpi mailbox command. |
| **/ |
| void |
| lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, |
| struct lpfc_nodelist *ndlp) |
| { |
| 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_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine cancels the retry delay timers to all the vports. |
| **/ |
| void |
| lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) |
| { |
| struct lpfc_vport **vports; |
| struct lpfc_nodelist *ndlp; |
| uint32_t link_state; |
| int i; |
| |
| /* Treat this failure as linkdown for all vports */ |
| link_state = phba->link_state; |
| lpfc_linkdown(phba); |
| phba->link_state = link_state; |
| |
| vports = lpfc_create_vport_work_array(phba); |
| |
| if (vports) { |
| for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
| ndlp = lpfc_findnode_did(vports[i], Fabric_DID); |
| if (ndlp) |
| lpfc_cancel_retry_delay_tmo(vports[i], ndlp); |
| lpfc_els_flush_cmd(vports[i]); |
| } |
| lpfc_destroy_vport_work_array(phba, vports); |
| } |
| } |
| |
| /** |
| * lpfc_retry_pport_discovery - Start timer to retry FLOGI. |
| * @phba: pointer to lpfc hba data structure. |
| * |
| * This routine abort all pending discovery commands and |
| * start a timer to retry FLOGI for the physical port |
| * discovery. |
| **/ |
| void |
| lpfc_retry_pport_discovery(struct lpfc_hba *phba) |
| { |
| struct lpfc_nodelist *ndlp; |
| struct Scsi_Host *shost; |
| |
| /* Cancel the all vports retry delay retry timers */ |
| lpfc_cancel_all_vport_retry_delay_timer(phba); |
| |
| /* If fabric require FLOGI, then re-instantiate physical login */ |
| ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); |
| if (!ndlp) |
| return; |
| |
| shost = lpfc_shost_from_vport(phba->pport); |
| mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ); |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_DELAY_TMO; |
| spin_unlock_irq(shost->host_lock); |
| ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; |
| phba->pport->port_state = LPFC_FLOGI; |
| return; |
| } |
| |
| /** |
| * lpfc_fabric_login_reqd - Check if FLOGI required. |
| * @phba: pointer to lpfc hba data structure. |
| * @cmdiocb: pointer to FDISC command iocb. |
| * @rspiocb: pointer to FDISC response iocb. |
| * |
| * This routine checks if a FLOGI is reguired for FDISC |
| * to succeed. |
| **/ |
| static int |
| lpfc_fabric_login_reqd(struct lpfc_hba *phba, |
| struct lpfc_iocbq *cmdiocb, |
| struct lpfc_iocbq *rspiocb) |
| { |
| |
| if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) || |
| (rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED)) |
| return 0; |
| else |
| return 1; |
| } |
| |
| /** |
| * 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; |
| struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp; |
| struct serv_parm *sp; |
| uint8_t fabric_param_changed; |
| |
| 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) { |
| |
| if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { |
| lpfc_retry_pport_discovery(phba); |
| goto out; |
| } |
| |
| /* 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. (x%x/x%x)\n", |
| irsp->ulpStatus, irsp->un.ulpWord[4]); |
| goto fdisc_failed; |
| } |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_VPORT_CVL_RCVD; |
| vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; |
| vport->fc_flag |= FC_FABRIC; |
| if (vport->phba->fc_topology == LPFC_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); |
| prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); |
| sp = prsp->virt + sizeof(uint32_t); |
| fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); |
| memcpy(&vport->fabric_portname, &sp->portName, |
| sizeof(struct lpfc_name)); |
| memcpy(&vport->fabric_nodename, &sp->nodeName, |
| sizeof(struct lpfc_name)); |
| if (fabric_param_changed && |
| !(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_cleanup_pending_mbox(vport); |
| |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| lpfc_sli4_unreg_all_rpis(vport); |
| |
| lpfc_mbx_unreg_vpi(vport); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; |
| if (phba->sli_rev == LPFC_SLI_REV4) |
| vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; |
| else |
| vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG; |
| spin_unlock_irq(shost->host_lock); |
| } else if ((phba->sli_rev == LPFC_SLI_REV4) && |
| !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { |
| /* |
| * Driver needs to re-reg VPI in order for f/w |
| * to update the MAC address. |
| */ |
| lpfc_register_new_vport(phba, vport, ndlp); |
| goto out; |
| } |
| |
| if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) |
| lpfc_issue_init_vpi(vport); |
| else 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; |
| vport->fc_myDID = 0; |
| 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; |
| |
| /* |
| * SLI3 ports require a different context type value than SLI4. |
| * Catch SLI3 ports here and override the prep. |
| */ |
| if (phba->sli_rev == LPFC_SLI_REV3) { |
| 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->cmn.virtual_fabric_support = 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; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| 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); |
| |
| /* NPIV LOGO completes to NPort <nlp_DID> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, |
| "2928 NPIV 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); |
| |
| if (irsp->ulpStatus == IOSTAT_SUCCESS) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_FABRIC; |
| spin_unlock_irq(shost->host_lock); |
| } |
| } |
| |
| /** |
| * 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_vport_delete_els_xri_aborted -Remove all ndlp references for vport |
| * @vport: pointer to lpfc vport data structure. |
| * |
| * This routine is invoked by the vport cleanup for deletions and the cleanup |
| * for an ndlp on removal. |
| **/ |
| void |
| lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; |
| unsigned long iflag = 0; |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| spin_lock(&phba->sli4_hba.abts_sgl_list_lock); |
| list_for_each_entry_safe(sglq_entry, sglq_next, |
| &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { |
| if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) |
| sglq_entry->ndlp = NULL; |
| } |
| spin_unlock(&phba->sli4_hba.abts_sgl_list_lock); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return; |
| } |
| |
| /** |
| * 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); |
| uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
| uint16_t lxri = 0; |
| |
| struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; |
| unsigned long iflag = 0; |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
| |
| spin_lock_irqsave(&phba->hbalock, iflag); |
| spin_lock(&phba->sli4_hba.abts_sgl_list_lock); |
| 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); |
| ndlp = sglq_entry->ndlp; |
| sglq_entry->ndlp = NULL; |
| list_add_tail(&sglq_entry->list, |
| &phba->sli4_hba.lpfc_sgl_list); |
| sglq_entry->state = SGL_FREED; |
| spin_unlock(&phba->sli4_hba.abts_sgl_list_lock); |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1); |
| |
| /* Check if TXQ queue needs to be serviced */ |
| if (pring->txq_cnt) |
| lpfc_worker_wake_up(phba); |
| return; |
| } |
| } |
| spin_unlock(&phba->sli4_hba.abts_sgl_list_lock); |
| lxri = lpfc_sli4_xri_inrange(phba, xri); |
| if (lxri == NO_XRI) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return; |
| } |
| sglq_entry = __lpfc_get_active_sglq(phba, lxri); |
| if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return; |
| } |
| sglq_entry->state = SGL_XRI_ABORTED; |
| spin_unlock_irqrestore(&phba->hbalock, iflag); |
| return; |
| } |