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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/scsi/lpfc/lpfc_els.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_els.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_els.c12467
1 files changed, 12467 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
new file mode 100644
index 0000000000..54e47f2682
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -0,0 +1,12467 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channel Host Bus Adapters. *
+ * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
+ * Copyright (C) 2004-2016 Emulex. All rights reserved. *
+ * EMULEX and SLI are trademarks of Emulex. *
+ * www.broadcom.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 <linux/delay.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport_fc.h>
+#include <uapi/scsi/fc/fc_fs.h>
+#include <uapi/scsi/fc/fc_els.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 void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
+ struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb);
+static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
+ struct lpfc_iocbq *);
+
+static int lpfc_max_els_tries = 3;
+
+static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
+static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
+static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
+
+/**
+ * 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_TRACE_EVENT,
+ "0237 Pending Link Event during "
+ "Discovery: State x%x\n",
+ phba->pport->port_state);
+
+ /* CLEAR_LA should re-enable link attention events and
+ * 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.
+ * @expect_rsp: flag indicating whether response is expected.
+ * @cmd_size: size of the ELS command.
+ * @retry: number of retries to the command 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
+ * ndlp 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, u8 expect_rsp,
+ u16 cmd_size, u8 retry,
+ struct lpfc_nodelist *ndlp, u32 did,
+ u32 elscmd)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
+ struct ulp_bde64_le *bpl;
+ u32 timeout = 0;
+
+ if (!lpfc_is_link_up(phba))
+ return NULL;
+
+ /* Allocate buffer for command iocb */
+ elsiocb = lpfc_sli_get_iocbq(phba);
+ if (!elsiocb)
+ 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->cmd_flag |=
+ ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
+ & LPFC_FIP_ELS_ID_MASK);
+ break;
+ case ELS_CMD_FDISC:
+ elsiocb->cmd_flag |=
+ ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
+ & LPFC_FIP_ELS_ID_MASK);
+ break;
+ case ELS_CMD_LOGO:
+ elsiocb->cmd_flag |=
+ ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
+ & LPFC_FIP_ELS_ID_MASK);
+ break;
+ }
+ else
+ elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
+
+ /* fill in BDEs for command */
+ /* Allocate buffer for command payload */
+ pcmd = kmalloc(sizeof(*pcmd), 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 (expect_rsp) {
+ prsp = kmalloc(sizeof(*prsp), 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(*pbuflist), 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);
+
+ if (expect_rsp) {
+ switch (elscmd) {
+ case ELS_CMD_FLOGI:
+ timeout = FF_DEF_RATOV * 2;
+ break;
+ case ELS_CMD_LOGO:
+ timeout = phba->fc_ratov;
+ break;
+ default:
+ timeout = phba->fc_ratov * 2;
+ }
+
+ /* Fill SGE for the num bde count */
+ elsiocb->num_bdes = 2;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ bmp = pcmd;
+ else
+ bmp = pbuflist;
+
+ lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
+ elscmd, timeout, expect_rsp);
+
+ bpl = (struct ulp_bde64_le *)pbuflist->virt;
+ bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
+ bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
+ bpl->type_size = cpu_to_le32(cmd_size);
+ bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
+
+ if (expect_rsp) {
+ bpl++;
+ bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
+ bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
+ bpl->type_size = cpu_to_le32(FCELSSIZE);
+ bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
+ }
+
+ elsiocb->cmd_dmabuf = pcmd;
+ elsiocb->bpl_dmabuf = 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 (expect_rsp) {
+ /* 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 "
+ "rpi x%x fc_flag:x%x\n",
+ elscmd, did, elsiocb->iotag,
+ vport->port_state, ndlp->nlp_rpi,
+ vport->fc_flag);
+ } 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 "
+ "port_state x%x rpi x%x fc_flag x%x\n",
+ elscmd, ndlp->nlp_DID, elsiocb->iotag,
+ cmd_size, vport->port_state,
+ ndlp->nlp_rpi, vport->fc_flag);
+ }
+
+ return elsiocb;
+
+els_iocb_free_pbuf_exit:
+ if (expect_rsp)
+ 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_nodelist *ndlp;
+ struct serv_parm *sp;
+ int rc;
+ int err = 0;
+
+ sp = &phba->fc_fabparam;
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!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->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp) {
+ err = 6;
+ goto fail_free_mbox;
+ }
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ err = 7;
+ 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);
+fail_free_mbox:
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+fail:
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "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 = NULL;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_dmabuf *dmabuf = NULL;
+ int rc = 0;
+
+ /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
+ if ((phba->sli_rev == LPFC_SLI_REV4) &&
+ !(phba->link_flag & LS_LOOPBACK_MODE) &&
+ !(vport->fc_flag & FC_PT2PT)) {
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!ndlp) {
+ rc = -ENODEV;
+ goto fail;
+ }
+ }
+
+ mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mboxq) {
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
+ if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) {
+ rc = lpfc_mbox_rsrc_prep(phba, mboxq);
+ if (rc) {
+ rc = -ENOMEM;
+ goto fail_mbox;
+ }
+ dmabuf = mboxq->ctx_buf;
+ memcpy(dmabuf->virt, &phba->fc_fabparam,
+ sizeof(struct serv_parm));
+ }
+
+ vport->port_state = LPFC_FABRIC_CFG_LINK;
+ if (dmabuf) {
+ lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
+ /* lpfc_reg_vfi memsets the mailbox. Restore the ctx_buf. */
+ mboxq->ctx_buf = dmabuf;
+ } else {
+ lpfc_reg_vfi(mboxq, vport, 0);
+ }
+
+ mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
+ mboxq->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ rc = -ENXIO;
+ goto fail_mbox;
+ }
+ return 0;
+
+fail_mbox:
+ lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
+fail:
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "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_TRACE_EVENT,
+ "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_TRACE_EVENT,
+ "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)
+{
+ struct lpfc_hba *phba = vport->phba;
+ 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)) ||
+ (vport->vport_flag & FAWWPN_PARAM_CHG)) {
+ fabric_param_changed = 1;
+ vport->vport_flag &= ~FAWWPN_PARAM_CHG;
+ }
+ /*
+ * 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 || phba->cfg_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.
+ * @ulp_word4: command response value
+ *
+ * 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, uint32_t ulp_word4)
+{
+ 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 = ulp_word4 & 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);
+ if (fabric_param_changed) {
+ /* Reset FDMI attribute masks based on config parameter */
+ if (phba->cfg_enable_SmartSAN ||
+ (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
+ /* Setup appropriate attribute masks */
+ vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
+ if (phba->cfg_enable_SmartSAN)
+ vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
+ else
+ vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
+ } else {
+ vport->fdmi_hba_mask = 0;
+ vport->fdmi_port_mask = 0;
+ }
+
+ }
+ 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 at least for the physical host */
+ lpfc_printf_vlog(vport, KERN_WARNING,
+ LOG_ELS | LOG_VPORT,
+ "1817 Fabric does not support NPIV "
+ "- configuring single port mode.\n");
+ spin_lock_irq(&phba->hbalock);
+ phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
+ spin_unlock_irq(&phba->hbalock);
+ }
+ }
+
+ /*
+ * For FC we need to do some special processing because of the SLI
+ * Port's default settings of the Common Service Parameters.
+ */
+ if ((phba->sli_rev == LPFC_SLI_REV4) &&
+ (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
+ /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
+ if (fabric_param_changed)
+ lpfc_unregister_fcf_prep(phba);
+
+ /* This should just update the VFI CSPs*/
+ if (vport->fc_flag & FC_VFI_REGISTERED)
+ lpfc_issue_reg_vfi(vport);
+ }
+
+ 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 ((np->nlp_state != NLP_STE_NPR_NODE) ||
+ !(np->nlp_flag & NLP_NPR_ADISC))
+ continue;
+ spin_lock_irq(&np->lock);
+ np->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&np->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_INIT_VPI;
+ spin_unlock_irq(shost->host_lock);
+ }
+
+ /*
+ * For SLI3 and SLI4, the VPI needs to be reregistered in
+ * response to this fabric parameter change event.
+ */
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_NEEDS_REG_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);
+ vport->fc_flag |= FC_PT2PT;
+ spin_unlock_irq(shost->host_lock);
+
+ /* If we are pt2pt with another NPort, force NPIV off! */
+ phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
+
+ /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
+ if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
+ lpfc_unregister_fcf_prep(phba);
+
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag &= ~FC_VFI_REGISTERED;
+ spin_unlock_irq(shost->host_lock);
+ phba->fc_topology_changed = 0;
+ }
+
+ 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 Id to LocalID
+ * the other side will be RemoteID.
+ */
+
+ /* not equal */
+ if (rc)
+ vport->fc_myDID = PT2PT_LocalID;
+
+ /* If not registered with a transport, decrement ndlp reference
+ * count indicating that ndlp can be safely released when other
+ * references are removed.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
+ lpfc_nlp_put(ndlp);
+
+ ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
+ if (!ndlp) {
+ /*
+ * Cannot find existing Fabric ndlp, so allocate a
+ * new one
+ */
+ ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
+ if (!ndlp)
+ goto fail;
+ }
+
+ memcpy(&ndlp->nlp_portname, &sp->portName,
+ sizeof(struct lpfc_name));
+ memcpy(&ndlp->nlp_nodename, &sp->nodeName,
+ sizeof(struct lpfc_name));
+ /* Set state will put ndlp onto node list if not already done */
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ goto fail;
+
+ lpfc_config_link(phba, mbox);
+
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
+ mbox->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ goto fail;
+ }
+ } else {
+ /* This side will wait for the PLOGI. If not registered with
+ * a transport, decrement node reference count indicating that
+ * ndlp can be released when other references are removed.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
+ lpfc_nlp_put(ndlp);
+
+ /* Start discovery - this should just do CLEAR_LA */
+ lpfc_disc_start(vport);
+ }
+
+ 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);
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ IOCB_t *irsp;
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
+ struct serv_parm *sp;
+ uint16_t fcf_index;
+ int rc;
+ u32 ulp_status, ulp_word4, tmo;
+ bool flogi_in_retry = false;
+
+ /* 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
+ */
+ if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
+ lpfc_nlp_put(ndlp);
+ goto out;
+ }
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "FLOGI cmpl: status:x%x/x%x state:x%x",
+ ulp_status, ulp_word4,
+ vport->port_state);
+
+ if (ulp_status) {
+ /*
+ * 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) &&
+ (ulp_status == IOSTAT_LOCAL_REJECT) &&
+ ((ulp_word4 & IOERR_PARAM_MASK) ==
+ 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,
+ ulp_status, ulp_word4, tmo);
+ 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 */
+ if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
+ ((ulp_word4 & IOERR_PARAM_MASK) ==
+ IOERR_LOOP_OPEN_FAILURE)))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2858 FLOGI failure Status:x%x/x%x TMO"
+ ":x%x Data x%x x%x\n",
+ ulp_status, ulp_word4, tmo,
+ phba->hba_flag, phba->fcf.fcf_flag);
+
+ /* Check for retry */
+ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
+ /* Address a timing race with dev_loss. If dev_loss
+ * is active on this FPort node, put the initial ref
+ * count back to stop premature node release actions.
+ */
+ lpfc_check_nlp_post_devloss(vport, ndlp);
+ flogi_in_retry = true;
+ goto out;
+ }
+
+ /* The FLOGI will not be retried. If the FPort node is not
+ * registered with the SCSI transport, remove the initial
+ * reference to trigger node release.
+ */
+ if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS) &&
+ !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
+ lpfc_nlp_put(ndlp);
+
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
+ "0150 FLOGI failure Status:x%x/x%x "
+ "xri x%x TMO:x%x refcnt %d\n",
+ ulp_status, ulp_word4, cmdiocb->sli4_xritag,
+ tmo, kref_read(&ndlp->kref));
+
+ /* If this is not a loop open failure, bail out */
+ if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
+ ((ulp_word4 & IOERR_PARAM_MASK) ==
+ IOERR_LOOP_OPEN_FAILURE))) {
+ /* FLOGI failure */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0100 FLOGI failure Status:x%x/x%x "
+ "TMO:x%x\n",
+ ulp_status, ulp_word4, tmo);
+ goto flogifail;
+ }
+
+ /* FLOGI failed, so there is no fabric */
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP |
+ FC_PT2PT_NO_NVME);
+ 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) ||
+ phba->fc_topology_changed)) {
+ if (vport->fc_flag & FC_VFI_REGISTERED) {
+ if (phba->fc_topology_changed) {
+ lpfc_unregister_fcf_prep(phba);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag &= ~FC_VFI_REGISTERED;
+ spin_unlock_irq(shost->host_lock);
+ phba->fc_topology_changed = 0;
+ } else {
+ lpfc_sli4_unreg_all_rpis(vport);
+ }
+ }
+
+ /* Do not register VFI if the driver aborted FLOGI */
+ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
+ lpfc_issue_reg_vfi(vport);
+
+ 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);
+ if (!prsp)
+ goto out;
+ sp = prsp->virt + sizeof(uint32_t);
+
+ /* FLOGI completes successfully */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0101 FLOGI completes successfully, I/O tag:x%x "
+ "xri x%x Data: x%x x%x x%x x%x x%x x%x x%x %d\n",
+ cmdiocb->iotag, cmdiocb->sli4_xritag,
+ ulp_word4, sp->cmn.e_d_tov,
+ sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
+ vport->port_state, vport->fc_flag,
+ sp->cmn.priority_tagging, kref_read(&ndlp->kref));
+
+ if (sp->cmn.priority_tagging)
+ vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
+ LPFC_VMID_TYPE_PRIO);
+ /* reinitialize the VMID datastructure before returning */
+ if (lpfc_is_vmid_enabled(phba))
+ lpfc_reinit_vmid(vport);
+
+ /*
+ * Address a timing race with dev_loss. If dev_loss is active on
+ * this FPort node, put the initial ref count back to stop premature
+ * node release actions.
+ */
+ lpfc_check_nlp_post_devloss(vport, ndlp);
+ 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,
+ ulp_word4);
+ 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_TRACE_EVENT,
+ "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);
+ phba->fcf.fcf_redisc_attempted = 0; /* reset */
+ 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);
+ phba->fcf.fcf_redisc_attempted = 0; /* reset */
+ goto out;
+ }
+ } else if (vport->port_state > LPFC_FLOGI &&
+ vport->fc_flag & FC_PT2PT) {
+ /*
+ * In a p2p topology, it is possible that discovery has
+ * already progressed, and this completion can be ignored.
+ * Recheck the indicated topology.
+ */
+ if (!sp->cmn.fPort)
+ goto out;
+ }
+
+flogifail:
+ spin_lock_irq(&phba->hbalock);
+ phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
+ spin_unlock_irq(&phba->hbalock);
+
+ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
+ /* FLOGI failed, so just use loop map to make discovery list */
+ lpfc_disc_list_loopmap(vport);
+
+ /* Start discovery */
+ lpfc_disc_start(vport);
+ } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
+ (((ulp_word4 & IOERR_PARAM_MASK) !=
+ IOERR_SLI_ABORTED) &&
+ ((ulp_word4 & IOERR_PARAM_MASK) !=
+ IOERR_SLI_DOWN))) &&
+ (phba->link_state != LPFC_CLEAR_LA)) {
+ /* If FLOGI failed enable link interrupt. */
+ lpfc_issue_clear_la(phba, vport);
+ }
+out:
+ if (!flogi_in_retry)
+ phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING;
+
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * lpfc_cmpl_els_link_down - Completion callback function for ELS command
+ * aborted during a link down
+ * @phba: pointer to lpfc hba data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @rspiocb: pointer to lpfc response iocb data structure.
+ *
+ */
+static void
+lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ uint32_t *pcmd;
+ uint32_t cmd;
+ u32 ulp_status, ulp_word4;
+
+ pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
+ cmd = *pcmd;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "6445 ELS completes after LINK_DOWN: "
+ " Status %x/%x cmd x%x flg x%x\n",
+ ulp_status, ulp_word4, cmd,
+ cmdiocb->cmd_flag);
+
+ if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
+ cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
+ atomic_dec(&phba->fabric_iocb_count);
+ }
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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;
+ union lpfc_wqe128 *wqe = NULL;
+ IOCB_t *icmd = NULL;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_iocbq defer_flogi_acc;
+ u8 *pcmd, ct;
+ uint16_t cmdsize;
+ uint32_t tmo, did;
+ int rc;
+
+ 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;
+
+ wqe = &elsiocb->wqe;
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+ icmd = &elsiocb->iocb;
+
+ /* 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;
+ if (sp->cmn.fcphLow < FC_PH3)
+ sp->cmn.fcphLow = FC_PH3;
+ if (sp->cmn.fcphHigh < FC_PH3)
+ sp->cmn.fcphHigh = FC_PH3;
+
+ /* Determine if switch supports priority tagging */
+ if (phba->cfg_vmid_priority_tagging) {
+ sp->cmn.priority_tagging = 1;
+ /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
+ if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
+ sizeof(vport->lpfc_vmid_host_uuid))) {
+ memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
+ sizeof(phba->wwpn));
+ memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
+ sizeof(phba->wwnn));
+ }
+ }
+
+ 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) {
+ /* FLOGI needs to be 3 for WQE FCFI */
+ ct = SLI4_CT_FCFI;
+ bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
+
+ /* Set the fcfi to the fcfi we registered with */
+ bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
+ phba->fcf.fcfi);
+ }
+
+ /* Can't do SLI4 class2 without support sequence coalescing */
+ sp->cls2.classValid = 0;
+ sp->cls2.seqDelivery = 0;
+ } else {
+ /* Historical, setting sequential-delivery bit for SLI3 */
+ sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
+ sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
+ 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->cmd_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);
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ /* Avoid race with FLOGI completion and hba_flags. */
+ phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
+
+ rc = lpfc_issue_fabric_iocb(phba, elsiocb);
+ if (rc == IOCB_ERROR) {
+ phba->hba_flag &= ~(HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING);
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ /* Clear external loopback plug detected flag */
+ phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
+
+ /* Check for a deferred FLOGI ACC condition */
+ if (phba->defer_flogi_acc_flag) {
+ /* lookup ndlp for received FLOGI */
+ ndlp = lpfc_findnode_did(vport, 0);
+ if (!ndlp)
+ return 0;
+
+ did = vport->fc_myDID;
+ vport->fc_myDID = Fabric_DID;
+
+ memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ bf_set(wqe_ctxt_tag,
+ &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
+ phba->defer_flogi_acc_rx_id);
+ bf_set(wqe_rcvoxid,
+ &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
+ phba->defer_flogi_acc_ox_id);
+ } else {
+ icmd = &defer_flogi_acc.iocb;
+ icmd->ulpContext = phba->defer_flogi_acc_rx_id;
+ icmd->unsli3.rcvsli3.ox_id =
+ phba->defer_flogi_acc_ox_id;
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
+ " ox_id: x%x, hba_flag x%x\n",
+ phba->defer_flogi_acc_rx_id,
+ phba->defer_flogi_acc_ox_id, phba->hba_flag);
+
+ /* Send deferred FLOGI ACC */
+ lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
+ ndlp, NULL);
+
+ phba->defer_flogi_acc_flag = false;
+ vport->fc_myDID = did;
+
+ /* Decrement ndlp reference count to indicate the node can be
+ * released when other references are removed.
+ */
+ lpfc_nlp_put(ndlp);
+ }
+
+ 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;
+ u32 ulp_command;
+
+ /* 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 = lpfc_phba_elsring(phba);
+ if (unlikely(!pring))
+ return -EIO;
+
+ /*
+ * 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) {
+ ulp_command = get_job_cmnd(phba, iocb);
+ if (ulp_command == CMD_ELS_REQUEST64_CR) {
+ ndlp = iocb->ndlp;
+ if (ndlp && ndlp->nlp_DID == Fabric_DID) {
+ if ((phba->pport->fc_flag & FC_PT2PT) &&
+ !(phba->pport->fc_flag & FC_PT2PT_PLOGI))
+ iocb->fabric_cmd_cmpl =
+ lpfc_ignore_els_cmpl;
+ lpfc_sli_issue_abort_iotag(phba, pring, iocb,
+ NULL);
+ }
+ }
+ }
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+
+ 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_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 = lpfc_nlp_init(vport, Fabric_DID);
+ if (!ndlp)
+ return 0;
+ /* Set the node type */
+ ndlp->nlp_type |= NLP_FABRIC;
+
+ /* Put ndlp onto node list */
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ /* Reset the Fabric flag, topology change may have happened */
+ vport->fc_flag &= ~FC_FABRIC;
+ if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
+ /* A node reference should be retained while registered with a
+ * transport or dev-loss-evt work is pending.
+ * Otherwise, decrement node reference to trigger release.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
+ !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
+ 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_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 = lpfc_nlp_init(vport, Fabric_DID);
+ if (!ndlp)
+ return 0;
+
+ /* NPIV is only supported in Fabrics. */
+ ndlp->nlp_type |= NLP_FABRIC;
+
+ /* Put ndlp onto node list */
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
+ /* A node reference should be retained while registered with a
+ * transport or dev-loss-evt work is pending.
+ * Otherwise, decrement node reference to trigger release.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
+ !(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
+ 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)
+{
+ 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 */
+ lpfc_els_disc_plogi(vport);
+
+ return;
+}
+
+/**
+ * lpfc_plogi_confirm_nport - Confirm plogi 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 serv_parm *sp;
+ uint8_t name[sizeof(struct lpfc_name)];
+ uint32_t keepDID = 0, keep_nlp_flag = 0;
+ uint32_t keep_new_nlp_flag = 0;
+ uint16_t keep_nlp_state;
+ u32 keep_nlp_fc4_type = 0;
+ struct lpfc_nvme_rport *keep_nrport = NULL;
+ unsigned long *active_rrqs_xri_bitmap = NULL;
+
+ /* 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);
+
+ /* return immediately if the WWPN matches ndlp */
+ if (!new_ndlp || (new_ndlp == ndlp))
+ return ndlp;
+
+ /*
+ * Unregister from backend if not done yet. Could have been skipped
+ * due to ADISC
+ */
+ lpfc_nlp_unreg_node(vport, new_ndlp);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
+ GFP_KERNEL);
+ if (active_rrqs_xri_bitmap)
+ memset(active_rrqs_xri_bitmap, 0,
+ phba->cfg_rrq_xri_bitmap_sz);
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
+ "3178 PLOGI confirm: ndlp x%x x%x x%x: "
+ "new_ndlp x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type,
+ (new_ndlp ? new_ndlp->nlp_DID : 0),
+ (new_ndlp ? new_ndlp->nlp_flag : 0),
+ (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
+
+ keepDID = new_ndlp->nlp_DID;
+
+ if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap)
+ memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap,
+ phba->cfg_rrq_xri_bitmap_sz);
+
+ /* At this point in this routine, we know new_ndlp will be
+ * returned. however, any previous GID_FTs that were done
+ * would have updated nlp_fc4_type in ndlp, so we must ensure
+ * new_ndlp has the right value.
+ */
+ if (vport->fc_flag & FC_FABRIC) {
+ keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
+ new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
+ }
+
+ 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,
+ phba->cfg_rrq_xri_bitmap_sz);
+
+ /* Lock both ndlps */
+ spin_lock_irq(&ndlp->lock);
+ spin_lock_irq(&new_ndlp->lock);
+ keep_new_nlp_flag = new_ndlp->nlp_flag;
+ keep_nlp_flag = ndlp->nlp_flag;
+ new_ndlp->nlp_flag = ndlp->nlp_flag;
+
+ /* if new_ndlp had NLP_UNREG_INP set, keep it */
+ if (keep_new_nlp_flag & NLP_UNREG_INP)
+ new_ndlp->nlp_flag |= NLP_UNREG_INP;
+ else
+ new_ndlp->nlp_flag &= ~NLP_UNREG_INP;
+
+ /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
+ if (keep_new_nlp_flag & NLP_RPI_REGISTERED)
+ new_ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+ else
+ new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
+
+ /*
+ * Retain the DROPPED flag. This will take care of the init
+ * refcount when affecting the state change
+ */
+ if (keep_new_nlp_flag & NLP_DROPPED)
+ new_ndlp->nlp_flag |= NLP_DROPPED;
+ else
+ new_ndlp->nlp_flag &= ~NLP_DROPPED;
+
+ ndlp->nlp_flag = keep_new_nlp_flag;
+
+ /* if ndlp had NLP_UNREG_INP set, keep it */
+ if (keep_nlp_flag & NLP_UNREG_INP)
+ ndlp->nlp_flag |= NLP_UNREG_INP;
+ else
+ ndlp->nlp_flag &= ~NLP_UNREG_INP;
+
+ /* if ndlp had NLP_RPI_REGISTERED set, keep it */
+ if (keep_nlp_flag & NLP_RPI_REGISTERED)
+ ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+ else
+ ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
+
+ /*
+ * Retain the DROPPED flag. This will take care of the init
+ * refcount when affecting the state change
+ */
+ if (keep_nlp_flag & NLP_DROPPED)
+ ndlp->nlp_flag |= NLP_DROPPED;
+ else
+ ndlp->nlp_flag &= ~NLP_DROPPED;
+
+ spin_unlock_irq(&new_ndlp->lock);
+ spin_unlock_irq(&ndlp->lock);
+
+ /* Set nlp_states accordingly */
+ keep_nlp_state = new_ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
+
+ /* interchange the nvme remoteport structs */
+ keep_nrport = new_ndlp->nrport;
+ new_ndlp->nrport = ndlp->nrport;
+
+ /* Move this back to NPR state */
+ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
+ /* The ndlp doesn't have a portname yet, but does have an
+ * NPort ID. The new_ndlp portname matches the Rport's
+ * portname. Reinstantiate the new_ndlp and reset the ndlp.
+ */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3179 PLOGI confirm NEW: %x %x\n",
+ new_ndlp->nlp_DID, keepDID);
+
+ /* Two ndlps cannot have the same did on the nodelist.
+ * The KeepDID and keep_nlp_fc4_type need to be swapped
+ * because ndlp is inflight with no WWPN.
+ */
+ ndlp->nlp_DID = keepDID;
+ ndlp->nlp_fc4_type = keep_nlp_fc4_type;
+ lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ active_rrqs_xri_bitmap)
+ memcpy(ndlp->active_rrqs_xri_bitmap,
+ active_rrqs_xri_bitmap,
+ phba->cfg_rrq_xri_bitmap_sz);
+
+ } else {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3180 PLOGI confirm SWAP: %x %x\n",
+ new_ndlp->nlp_DID, keepDID);
+
+ lpfc_unreg_rpi(vport, ndlp);
+
+ /* The ndlp and new_ndlp both have WWPNs but are swapping
+ * NPort Ids and attributes.
+ */
+ ndlp->nlp_DID = keepDID;
+ ndlp->nlp_fc4_type = keep_nlp_fc4_type;
+
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ active_rrqs_xri_bitmap)
+ memcpy(ndlp->active_rrqs_xri_bitmap,
+ active_rrqs_xri_bitmap,
+ phba->cfg_rrq_xri_bitmap_sz);
+
+ /* Since we are switching over to the new_ndlp,
+ * reset the old ndlp state
+ */
+ if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
+ (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
+ keep_nlp_state = NLP_STE_NPR_NODE;
+ lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
+ ndlp->nrport = keep_nrport;
+ }
+
+ /*
+ * If ndlp is not associated with any rport we can drop it here else
+ * let dev_loss_tmo_callbk trigger DEVICE_RM event
+ */
+ if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
+ lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
+
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ active_rrqs_xri_bitmap)
+ mempool_free(active_rrqs_xri_bitmap,
+ phba->active_rrq_pool);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
+ "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n",
+ new_ndlp->nlp_DID, new_ndlp->nlp_flag,
+ new_ndlp->nlp_fc4_type);
+
+ 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;
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ struct lpfc_node_rrq *rrq;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ rrq = cmdiocb->context_un.rrq;
+ cmdiocb->rsp_iocb = rspiocb;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "RRQ cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4,
+ get_job_els_rsp64_did(phba, cmdiocb));
+
+
+ /* rrq completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2880 RRQ completes to DID x%x "
+ "Data: x%x x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ulp_status, ulp_word4,
+ get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
+
+ if (ulp_status) {
+ /* Check for retry */
+ /* RRQ failed Don't print the vport to vport rjts */
+ if (ulp_status != IOSTAT_LS_RJT ||
+ (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
+ ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
+ (phba)->pport->cfg_log_verbose & LOG_ELS)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2881 RRQ failure DID:%06X Status:"
+ "x%x/x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4);
+ }
+
+ lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+ 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 conditions. 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, *free_ndlp;
+ struct lpfc_dmabuf *prsp;
+ int disc;
+ struct serv_parm *sp = NULL;
+ u32 ulp_status, ulp_word4, did, iotag;
+ bool release_node = false;
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ cmdiocb->rsp_iocb = rspiocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ iotag = get_wqe_reqtag(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ iotag = irsp->ulpIoTag;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "PLOGI cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+
+ ndlp = lpfc_findnode_did(vport, did);
+ if (!ndlp) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0136 PLOGI completes to NPort x%x "
+ "with no ndlp. Data: x%x x%x x%x\n",
+ did, ulp_status, ulp_word4, iotag);
+ goto out_freeiocb;
+ }
+
+ /* Since ndlp can be freed in the disc state machine, note if this node
+ * is being used during discovery.
+ */
+ spin_lock_irq(&ndlp->lock);
+ disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+
+ /* PLOGI completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0102 PLOGI completes to NPort x%06x "
+ "Data: x%x x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_fc4_type,
+ ulp_status, ulp_word4,
+ disc, vport->num_disc_nodes);
+
+ /* Check to see if link went down during discovery */
+ if (lpfc_els_chk_latt(vport)) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ goto out;
+ }
+
+ if (ulp_status) {
+ /* Check for retry */
+ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
+ /* ELS command is being retried */
+ if (disc) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ }
+ goto out;
+ }
+ /* PLOGI failed Don't print the vport to vport rjts */
+ if (ulp_status != IOSTAT_LS_RJT ||
+ (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
+ ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
+ (phba)->pport->cfg_log_verbose & LOG_ELS)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2753 PLOGI failure DID:%06X "
+ "Status:x%x/x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4);
+
+ /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
+ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_CMPL_PLOGI);
+
+ /* If a PLOGI collision occurred, the node needs to continue
+ * with the reglogin process.
+ */
+ spin_lock_irq(&ndlp->lock);
+ if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) &&
+ ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
+ spin_unlock_irq(&ndlp->lock);
+ goto out;
+ }
+
+ /* No PLOGI collision and the node is not registered with the
+ * scsi or nvme transport. It is no longer an active node. Just
+ * start the device remove process.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
+ release_node = true;
+ }
+ spin_unlock_irq(&ndlp->lock);
+
+ if (release_node)
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_DEVICE_RM);
+ } else {
+ /* Good status, call state machine */
+ prsp = list_entry(cmdiocb->cmd_dmabuf->list.next,
+ struct lpfc_dmabuf, list);
+ ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
+
+ sp = (struct serv_parm *)((u8 *)prsp->virt +
+ sizeof(u32));
+
+ ndlp->vmid_support = 0;
+ if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
+ (phba->cfg_vmid_priority_tagging &&
+ sp->cmn.priority_tagging)) {
+ lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
+ "4018 app_hdr_support %d tagging %d DID x%x\n",
+ sp->cmn.app_hdr_support,
+ sp->cmn.priority_tagging,
+ ndlp->nlp_DID);
+ /* if the dest port supports VMID, mark it in ndlp */
+ ndlp->vmid_support = 1;
+ }
+
+ 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_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
+ "PLOGI Cmpl PUT: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+out_freeiocb:
+ /* Release the reference on the original I/O request. */
+ free_ndlp = cmdiocb->ndlp;
+
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
+ 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 fields of the PLOGI IOCB and invokes
+ * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
+ *
+ * Note that the ndlp reference count will be incremented by 1 for holding
+ * the ndlp and the reference to ndlp will be stored into the ndlp field
+ * of the IOCB for the completion callback function to the 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;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int ret;
+
+ ndlp = lpfc_findnode_did(vport, did);
+ if (!ndlp)
+ return 1;
+
+ /* Defer the processing of the issue PLOGI until after the
+ * outstanding UNREG_RPI mbox command completes, unless we
+ * are going offline. This logic does not apply for Fabric DIDs
+ */
+ if ((ndlp->nlp_flag & (NLP_IGNR_REG_CMPL | NLP_UNREG_INP)) &&
+ ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
+ !(vport->fc_flag & FC_OFFLINE_MODE)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "4110 Issue PLOGI x%x deferred "
+ "on NPort x%x rpi x%x flg x%x Data:"
+ " x%px\n",
+ ndlp->nlp_defer_did, ndlp->nlp_DID,
+ ndlp->nlp_rpi, ndlp->nlp_flag, ndlp);
+
+ /* We can only defer 1st PLOGI */
+ if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
+ ndlp->nlp_defer_did = did;
+ return 0;
+ }
+
+ 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;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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;
+
+ sp->cmn.valid_vendor_ver_level = 0;
+ memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
+ sp->cmn.bbRcvSizeMsb &= 0xF;
+
+ /* Check if the destination port supports VMID */
+ ndlp->vmid_support = 0;
+ if (vport->vmid_priority_tagging)
+ sp->cmn.priority_tagging = 1;
+ else if (phba->cfg_vmid_app_header &&
+ bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
+ sp->cmn.app_hdr_support = 1;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue PLOGI: did:x%x",
+ did, 0, 0);
+
+ /* If our firmware supports this feature, convey that
+ * information to the target using the vendor specific field.
+ */
+ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
+ sp->cmn.valid_vendor_ver_level = 1;
+ sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
+ sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
+ }
+
+ phba->fc_stat.elsXmitPLOGI++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue PLOGI: did:x%x refcnt %d",
+ did, kref_read(&ndlp->kref), 0);
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (ret) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 lpfc_nodelist *ndlp;
+ char *mode;
+ u32 loglevel;
+ u32 ulp_status;
+ u32 ulp_word4;
+ bool release_node = false;
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ cmdiocb->rsp_iocb = rspiocb;
+
+ ndlp = cmdiocb->ndlp;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_PRLI_SND;
+
+ /* Driver supports multiple FC4 types. Counters matter. */
+ vport->fc_prli_sent--;
+ ndlp->fc4_prli_sent--;
+ spin_unlock_irq(&ndlp->lock);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "PRLI cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4,
+ ndlp->nlp_DID);
+
+ /* PRLI completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0103 PRLI completes to NPort x%06x "
+ "Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ulp_status, ulp_word4,
+ vport->num_disc_nodes, ndlp->fc4_prli_sent);
+
+ /* Check to see if link went down during discovery */
+ if (lpfc_els_chk_latt(vport))
+ goto out;
+
+ if (ulp_status) {
+ /* Check for retry */
+ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
+ /* ELS command is being retried */
+ goto out;
+ }
+
+ /* If we don't send GFT_ID to Fabric, a PRLI error
+ * could be expected.
+ */
+ if ((vport->fc_flag & FC_FABRIC) ||
+ (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) {
+ mode = KERN_ERR;
+ loglevel = LOG_TRACE_EVENT;
+ } else {
+ mode = KERN_INFO;
+ loglevel = LOG_ELS;
+ }
+
+ /* PRLI failed */
+ lpfc_printf_vlog(vport, mode, loglevel,
+ "2754 PRLI failure DID:%06X Status:x%x/x%x, "
+ "data: x%x x%x x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4, ndlp->nlp_state,
+ ndlp->fc4_prli_sent, ndlp->nlp_flag);
+
+ /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
+ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_CMPL_PRLI);
+
+ /* The following condition catches an inflight transition
+ * mismatch typically caused by an RSCN. Skip any
+ * processing to allow recovery.
+ */
+ if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
+ ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) ||
+ (ndlp->nlp_state == NLP_STE_NPR_NODE &&
+ ndlp->nlp_flag & NLP_DELAY_TMO)) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
+ "2784 PRLI cmpl: Allow Node recovery "
+ "DID x%06x nstate x%x nflag x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag);
+ goto out;
+ }
+
+ /*
+ * For P2P topology, retain the node so that PLOGI can be
+ * attempted on it again.
+ */
+ if (vport->fc_flag & FC_PT2PT)
+ goto out;
+
+ /* As long as this node is not registered with the SCSI
+ * or NVMe transport and no other PRLIs are outstanding,
+ * it is no longer an active node. Otherwise devloss
+ * handles the final cleanup.
+ */
+ spin_lock_irq(&ndlp->lock);
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
+ !ndlp->fc4_prli_sent) {
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
+ release_node = true;
+ }
+ spin_unlock_irq(&ndlp->lock);
+
+ if (release_node)
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_DEVICE_RM);
+ } else {
+ /* Good status, call state machine. However, if another
+ * PRLI is outstanding, don't call the state machine
+ * because final disposition to Mapped or Unmapped is
+ * completed there.
+ */
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_CMPL_PRLI);
+ }
+
+out:
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ PRLI *npr;
+ struct lpfc_nvme_prli *npr_nvme;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ u32 local_nlp_type, elscmd;
+
+ /*
+ * If we are in RSCN mode, the FC4 types supported from a
+ * previous GFT_ID command may not be accurate. So, if we
+ * are a NVME Initiator, always look for the possibility of
+ * the remote NPort beng a NVME Target.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ vport->fc_flag & FC_RSCN_MODE &&
+ vport->nvmei_support)
+ ndlp->nlp_fc4_type |= NLP_FC4_NVME;
+ local_nlp_type = ndlp->nlp_fc4_type;
+
+ /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
+ * fields here before any of them can complete.
+ */
+ ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
+ ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
+ ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+ ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC);
+ ndlp->nvme_fb_size = 0;
+
+ send_next_prli:
+ if (local_nlp_type & NLP_FC4_FCP) {
+ /* Payload is 4 + 16 = 20 x14 bytes. */
+ cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
+ elscmd = ELS_CMD_PRLI;
+ } else if (local_nlp_type & NLP_FC4_NVME) {
+ /* Payload is 4 + 20 = 24 x18 bytes. */
+ cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
+ elscmd = ELS_CMD_NVMEPRLI;
+ } else {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
+ ndlp->nlp_fc4_type, ndlp->nlp_DID);
+ return 1;
+ }
+
+ /* SLI3 ports don't support NVME. If this rport is a strict NVME
+ * FC4 type, implicitly LOGO.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV3 &&
+ ndlp->nlp_fc4_type == NLP_FC4_NVME) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
+ ndlp->nlp_type);
+ lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
+ return 1;
+ }
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, elscmd);
+ if (!elsiocb)
+ return 1;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+
+ /* For PRLI request, remainder of payload is service parameters */
+ memset(pcmd, 0, cmdsize);
+
+ if (local_nlp_type & NLP_FC4_FCP) {
+ /* Remainder of payload is FCP PRLI parameter page.
+ * Note: this data structure is defined as
+ * BE/LE in the structure definition so no
+ * byte swap call is made.
+ */
+ *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
+ pcmd += sizeof(uint32_t);
+ 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;
+ if (vport->cfg_first_burst_size)
+ npr->writeXferRdyDis = 1;
+
+ /* For FCP support */
+ npr->prliType = PRLI_FCP_TYPE;
+ npr->initiatorFunc = 1;
+ elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
+
+ /* Remove FCP type - processed. */
+ local_nlp_type &= ~NLP_FC4_FCP;
+ } else if (local_nlp_type & NLP_FC4_NVME) {
+ /* Remainder of payload is NVME PRLI parameter page.
+ * This data structure is the newer definition that
+ * uses bf macros so a byte swap is required.
+ */
+ *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
+ pcmd += sizeof(uint32_t);
+ npr_nvme = (struct lpfc_nvme_prli *)pcmd;
+ bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
+ bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
+ if (phba->nsler) {
+ bf_set(prli_nsler, npr_nvme, 1);
+ bf_set(prli_conf, npr_nvme, 1);
+ }
+
+ /* Only initiators request first burst. */
+ if ((phba->cfg_nvme_enable_fb) &&
+ !phba->nvmet_support)
+ bf_set(prli_fba, npr_nvme, 1);
+
+ if (phba->nvmet_support) {
+ bf_set(prli_tgt, npr_nvme, 1);
+ bf_set(prli_disc, npr_nvme, 1);
+ } else {
+ bf_set(prli_init, npr_nvme, 1);
+ bf_set(prli_conf, npr_nvme, 1);
+ }
+
+ npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
+ npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
+ elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
+
+ /* Remove NVME type - processed. */
+ local_nlp_type &= ~NLP_FC4_NVME;
+ }
+
+ phba->fc_stat.elsXmitPRLI++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue PRLI: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ /* The vport counters are used for lpfc_scan_finished, but
+ * the ndlp is used to track outstanding PRLIs for different
+ * FC4 types.
+ */
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_PRLI_SND;
+ vport->fc_prli_sent++;
+ ndlp->fc4_prli_sent++;
+ spin_unlock_irq(&ndlp->lock);
+
+ /* The driver supports 2 FC4 types. Make sure
+ * a PRLI is issued for all types before exiting.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
+ goto send_next_prli;
+ else
+ 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)) {
+
+ /*
+ * If link is down, clear_la and reg_vpi will be done after
+ * flogi following a link up event
+ */
+ if (!lpfc_is_link_up(phba))
+ return;
+
+ /* The ADISCs are complete. Doesn't matter if they
+ * succeeded or failed because the ADISC completion
+ * routine guarantees to call the state machine and
+ * the RPI is either unregistered (failed ADISC response)
+ * or the RPI is still valid and the node is marked
+ * mapped for a target. The exchanges should be in the
+ * correct state. This code is specific to SLI3.
+ */
+ lpfc_issue_clear_la(phba, vport);
+ 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 */
+ 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)
+{
+ 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 */
+ 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;
+ IOCB_t *irsp;
+ struct lpfc_nodelist *ndlp;
+ int disc;
+ u32 ulp_status, ulp_word4, tmo;
+ bool release_node = false;
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ cmdiocb->rsp_iocb = rspiocb;
+
+ ndlp = cmdiocb->ndlp;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "ADISC cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4,
+ 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(&ndlp->lock);
+ disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
+ ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->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, ulp_status, ulp_word4,
+ tmo, disc, vport->num_disc_nodes);
+ /* Check to see if link went down during discovery */
+ if (lpfc_els_chk_latt(vport)) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ goto out;
+ }
+
+ if (ulp_status) {
+ /* Check for retry */
+ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
+ /* ELS command is being retried */
+ if (disc) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_set_disctmo(vport);
+ }
+ goto out;
+ }
+ /* ADISC failed */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4);
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_CMPL_ADISC);
+
+ /* As long as this node is not registered with the SCSI or NVMe
+ * transport, it is no longer an active node. Otherwise
+ * devloss handles the final cleanup.
+ */
+ spin_lock_irq(&ndlp->lock);
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS))
+ release_node = true;
+ }
+ spin_unlock_irq(&ndlp->lock);
+
+ if (release_node)
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_DEVICE_RM);
+ } else
+ /* Good status, call state machine */
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_CMPL_ADISC);
+
+ /* Check to see if there are more ADISCs to be sent */
+ if (disc && vport->num_disc_nodes)
+ lpfc_more_adisc(vport);
+out:
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+ return;
+}
+
+/**
+ * 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the ADISC 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)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ ADISC *ap;
+ 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;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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);
+
+ phba->fc_stat.elsXmitADISC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_ADISC_SND;
+ spin_unlock_irq(&ndlp->lock);
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto err;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue ADISC: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_ADISC_SND;
+ spin_unlock_irq(&ndlp->lock);
+ return 1;
+}
+
+/**
+ * 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.
+ **/
+static void
+lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ struct lpfc_vport *vport = ndlp->vport;
+ IOCB_t *irsp;
+ unsigned long flags;
+ uint32_t skip_recovery = 0;
+ int wake_up_waiter = 0;
+ u32 ulp_status;
+ u32 ulp_word4;
+ u32 tmo;
+
+ /* we pass cmdiocb to state machine which needs rspiocb as well */
+ cmdiocb->rsp_iocb = rspiocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ }
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_SND;
+ if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
+ wake_up_waiter = 1;
+ ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
+ }
+ spin_unlock_irq(&ndlp->lock);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "LOGO cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4,
+ ndlp->nlp_DID);
+
+ /* LOGO completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0105 LOGO completes to NPort x%x "
+ "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
+ ulp_status, ulp_word4,
+ tmo, vport->num_disc_nodes);
+
+ if (lpfc_els_chk_latt(vport)) {
+ skip_recovery = 1;
+ goto out;
+ }
+
+ /* The LOGO will not be retried on failure. A LOGO was
+ * issued to the remote rport and a ACC or RJT or no Answer are
+ * all acceptable. Note the failure and move forward with
+ * discovery. The PLOGI will retry.
+ */
+ if (ulp_status) {
+ /* LOGO failed */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2756 LOGO failure, No Retry DID:%06X "
+ "Status:x%x/x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4);
+
+ if (lpfc_error_lost_link(vport, ulp_status, ulp_word4))
+ skip_recovery = 1;
+ }
+
+ /* Call state machine. This will unregister the rpi if needed. */
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
+
+ if (skip_recovery)
+ goto out;
+
+ /* The driver sets this flag for an NPIV instance that doesn't want to
+ * log into the remote port.
+ */
+ if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
+ spin_lock_irq(&ndlp->lock);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ ndlp->nlp_flag |= NLP_RELEASE_RPI;
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_DEVICE_RM);
+ goto out_rsrc_free;
+ }
+
+out:
+ /* At this point, the LOGO processing is complete. NOTE: For a
+ * pt2pt topology, we are assuming the NPortID will only change
+ * on link up processing. For a LOGO / PLOGI initiated by the
+ * Initiator, we are assuming the NPortID is not going to change.
+ */
+
+ if (wake_up_waiter && ndlp->logo_waitq)
+ wake_up(ndlp->logo_waitq);
+ /*
+ * If the node is a target, the handling attempts to recover the port.
+ * For any other port type, the rpi is unregistered as an implicit
+ * LOGO.
+ */
+ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
+ skip_recovery == 0) {
+ lpfc_cancel_retry_delay_tmo(vport, ndlp);
+ spin_lock_irqsave(&ndlp->lock, flags);
+ ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+ spin_unlock_irqrestore(&ndlp->lock, flags);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3187 LOGO completes to NPort x%x: Start "
+ "Recovery Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ulp_status,
+ ulp_word4, tmo,
+ vport->num_disc_nodes);
+
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+
+ lpfc_disc_start(vport);
+ return;
+ }
+
+ /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
+ * driver sends a LOGO to the rport to cleanup. For fabric and
+ * initiator ports cleanup the node as long as it the node is not
+ * register with the transport.
+ */
+ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_state_machine(vport, ndlp, cmdiocb,
+ NLP_EVT_DEVICE_RM);
+ }
+out_rsrc_free:
+ /* Driver is done with the I/O. */
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the LOGO ELS command.
+ *
+ * Callers of this routine are expected to unregister the RPI first
+ *
+ * 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 lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int rc;
+
+ spin_lock_irq(&ndlp->lock);
+ if (ndlp->nlp_flag & NLP_LOGO_SND) {
+ spin_unlock_irq(&ndlp->lock);
+ return 0;
+ }
+ spin_unlock_irq(&ndlp->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;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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));
+
+ phba->fc_stat.elsXmitLOGO++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_SND;
+ ndlp->nlp_flag &= ~NLP_ISSUE_LOGO;
+ spin_unlock_irq(&ndlp->lock);
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto err;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue LOGO: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ goto err;
+ }
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
+ return 0;
+
+err:
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_SND;
+ spin_unlock_irq(&ndlp->lock);
+ return 1;
+}
+
+/**
+ * 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 RSCN, lpfc_issue_els_rscn, 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;
+ struct lpfc_nodelist *free_ndlp;
+ IOCB_t *irsp;
+ u32 ulp_status, ulp_word4, tmo, did, iotag;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ iotag = get_wqe_reqtag(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ iotag = irsp->ulpIoTag;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "ELS cmd cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+
+ /* 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",
+ iotag, ulp_status, ulp_word4, tmo);
+
+ /* Check to see if link went down during discovery */
+ lpfc_els_chk_latt(vport);
+
+ free_ndlp = cmdiocb->ndlp;
+
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(free_ndlp);
+}
+
+/**
+ * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
+ * @vport: pointer to lpfc_vport data structure.
+ * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
+ *
+ * This routine registers the rpi assigned to the fabric controller
+ * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
+ * state triggering a registration with the SCSI transport.
+ *
+ * This routine is single out because the fabric controller node
+ * does not receive a PLOGI. This routine is consumed by the
+ * SCR and RDF ELS commands. Callers are expected to qualify
+ * with SLI4 first.
+ **/
+static int
+lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_nodelist *ns_ndlp;
+ LPFC_MBOXQ_t *mbox;
+
+ if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED)
+ return rc;
+
+ ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ if (!ns_ndlp)
+ return -ENODEV;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
+ "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
+ __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
+ ns_ndlp->nlp_state);
+ if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
+ return -ENODEV;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "0936 %s: no memory for reg_login "
+ "Data: x%x x%x x%x x%x\n", __func__,
+ fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
+ fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
+ return -ENOMEM;
+ }
+ rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
+ (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi);
+ if (rc) {
+ rc = -EACCES;
+ goto out;
+ }
+
+ fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
+ mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
+ if (!mbox->ctx_ndlp) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ mbox->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ rc = -ENODEV;
+ lpfc_nlp_put(fc_ndlp);
+ goto out;
+ }
+ /* Success path. Exit. */
+ lpfc_nlp_set_state(vport, fc_ndlp,
+ NLP_STE_REG_LOGIN_ISSUE);
+ return 0;
+
+ out:
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "0938 %s: failed to format reg_login "
+ "Data: x%x x%x x%x x%x\n", __func__,
+ fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
+ fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
+ return rc;
+}
+
+/**
+ * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS 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 a generic completion callback function for Discovery ELS cmd.
+ * Currently used by the ELS command issuing routines for the ELS State Change
+ * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
+ * These commands will be retried once only for ELS timeout errors.
+ **/
+static void
+lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_vport *vport = cmdiocb->vport;
+ IOCB_t *irsp;
+ struct lpfc_els_rdf_rsp *prdf;
+ struct lpfc_dmabuf *pcmd, *prsp;
+ u32 *pdata;
+ u32 cmd;
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ u32 ulp_status, ulp_word4, tmo, did, iotag;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ iotag = get_wqe_reqtag(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ iotag = irsp->ulpIoTag;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "ELS cmd cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+
+ /* ELS cmd tag <ulpIoTag> completes */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
+ iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ if (!pcmd)
+ goto out;
+
+ pdata = (u32 *)pcmd->virt;
+ if (!pdata)
+ goto out;
+ cmd = *pdata;
+
+ /* Only 1 retry for ELS Timeout only */
+ if (ulp_status == IOSTAT_LOCAL_REJECT &&
+ ((ulp_word4 & IOERR_PARAM_MASK) ==
+ IOERR_SEQUENCE_TIMEOUT)) {
+ cmdiocb->retry++;
+ if (cmdiocb->retry <= 1) {
+ switch (cmd) {
+ case ELS_CMD_SCR:
+ lpfc_issue_els_scr(vport, cmdiocb->retry);
+ break;
+ case ELS_CMD_EDC:
+ lpfc_issue_els_edc(vport, cmdiocb->retry);
+ break;
+ case ELS_CMD_RDF:
+ lpfc_issue_els_rdf(vport, cmdiocb->retry);
+ break;
+ }
+ goto out;
+ }
+ phba->fc_stat.elsRetryExceeded++;
+ }
+ if (cmd == ELS_CMD_EDC) {
+ /* must be called before checking uplStatus and returning */
+ lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
+ return;
+ }
+ if (ulp_status) {
+ /* ELS discovery cmd completes with error */
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
+ "4203 ELS cmd x%x error: x%x x%X\n", cmd,
+ ulp_status, ulp_word4);
+ goto out;
+ }
+
+ /* The RDF response doesn't have any impact on the running driver
+ * but the notification descriptors are dumped here for support.
+ */
+ if (cmd == ELS_CMD_RDF) {
+ int i;
+
+ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+
+ prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
+ if (!prdf)
+ goto out;
+
+ for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
+ i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_ELS | LOG_CGN_MGMT,
+ "4677 Fabric RDF Notification Grant "
+ "Data: 0x%08x Reg: %x %x\n",
+ be32_to_cpu(
+ prdf->reg_d1.desc_tags[i]),
+ phba->cgn_reg_signal,
+ phba->cgn_reg_fpin);
+ }
+
+out:
+ /* Check to see if link went down during discovery */
+ lpfc_els_chk_latt(vport);
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+ return;
+}
+
+/**
+ * lpfc_issue_els_scr - Issue a scr to an node on a vport
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @retry: retry counter for the command IOCB.
+ *
+ * This routine issues a State Change Request (SCR) to a fabric node
+ * on a @vport. The remote node is Fabric Controller (0xfffffd). 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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, uint8_t retry)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ struct lpfc_nodelist *ndlp;
+
+ cmdsize = (sizeof(uint32_t) + sizeof(SCR));
+
+ ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
+ if (!ndlp)
+ return 1;
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_SCR);
+ if (!elsiocb)
+ return 1;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
+ if (rc) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "0937 %s: Failed to reg fc node, rc %d\n",
+ __func__, rc);
+ return 1;
+ }
+ }
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue SCR: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
+ * or the other nport (pt2pt).
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @retry: number of retries to the command IOCB.
+ *
+ * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
+ * when connected to a fabric, or to the remote port when connected
+ * in point-to-point mode. When sent to the Fabric Controller, it will
+ * replay the RSCN to registered recipients.
+ *
+ * Note that the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the RSCN ELS command.
+ *
+ * Return code
+ * 0 - Successfully issued RSCN command
+ * 1 - Failed to issue RSCN command
+ **/
+int
+lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_nodelist *ndlp;
+ struct {
+ struct fc_els_rscn rscn;
+ struct fc_els_rscn_page portid;
+ } *event;
+ uint32_t nportid;
+ uint16_t cmdsize = sizeof(*event);
+
+ /* Not supported for private loop */
+ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
+ !(vport->fc_flag & FC_PUBLIC_LOOP))
+ return 1;
+
+ if (vport->fc_flag & FC_PT2PT) {
+ /* find any mapped nport - that would be the other nport */
+ ndlp = lpfc_findnode_mapped(vport);
+ if (!ndlp)
+ return 1;
+ } else {
+ nportid = FC_FID_FCTRL;
+ /* find the fabric controller node */
+ ndlp = lpfc_findnode_did(vport, nportid);
+ if (!ndlp) {
+ /* if one didn't exist, make one */
+ ndlp = lpfc_nlp_init(vport, nportid);
+ if (!ndlp)
+ return 1;
+ lpfc_enqueue_node(vport, ndlp);
+ }
+ }
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
+
+ if (!elsiocb)
+ return 1;
+
+ event = elsiocb->cmd_dmabuf->virt;
+
+ event->rscn.rscn_cmd = ELS_RSCN;
+ event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
+ event->rscn.rscn_plen = cpu_to_be16(cmdsize);
+
+ nportid = vport->fc_myDID;
+ /* appears that page flags must be 0 for fabric to broadcast RSCN */
+ event->portid.rscn_page_flags = 0;
+ event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
+ event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
+ event->portid.rscn_fid[2] = nportid & 0x000000FF;
+
+ phba->fc_stat.elsXmitRSCN++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue RSCN: did:x%x",
+ ndlp->nlp_DID, 0, 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the FARPR 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)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ FARP *fp;
+ uint8_t *pcmd;
+ uint32_t *lp;
+ uint16_t cmdsize;
+ struct lpfc_nodelist *ondlp;
+ struct lpfc_nodelist *ndlp;
+
+ cmdsize = (sizeof(uint32_t) + sizeof(FARP));
+
+ ndlp = lpfc_findnode_did(vport, nportid);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, nportid);
+ if (!ndlp)
+ return 1;
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_FARPR);
+ if (!elsiocb)
+ return 1;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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) {
+ 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->cmd_cmpl = lpfc_cmpl_els_cmd;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ /* The additional lpfc_nlp_put will cause the following
+ * lpfc_els_free_iocb routine to trigger the release of
+ * the node.
+ */
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+ /* This will cause the callback-function lpfc_cmpl_els_cmd to
+ * trigger the release of the node.
+ */
+ /* Don't release reference count as RDF is likely outstanding */
+ return 0;
+}
+
+/**
+ * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @retry: retry counter for the command IOCB.
+ *
+ * This routine issues an ELS RDF to the Fabric Controller to register
+ * for diagnostic functions.
+ *
+ * Note that the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the RDF ELS command.
+ *
+ * Return code
+ * 0 - Successfully issued rdf command
+ * 1 - Failed to issue rdf command
+ **/
+int
+lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_els_rdf_req *prdf;
+ struct lpfc_nodelist *ndlp;
+ uint16_t cmdsize;
+ int rc;
+
+ cmdsize = sizeof(*prdf);
+
+ ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
+ if (!ndlp)
+ return -ENODEV;
+ lpfc_enqueue_node(vport, ndlp);
+ }
+
+ /* RDF ELS is not required on an NPIV VN_Port. */
+ if (vport->port_type == LPFC_NPIV_PORT)
+ return -EACCES;
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_RDF);
+ if (!elsiocb)
+ return -ENOMEM;
+
+ /* Configure the payload for the supported FPIN events. */
+ prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
+ memset(prdf, 0, cmdsize);
+ prdf->rdf.fpin_cmd = ELS_RDF;
+ prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
+ sizeof(struct fc_els_rdf));
+ prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
+ prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
+ FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
+ prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
+ prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
+ prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
+ prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
+ prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
+ ndlp->nlp_DID, phba->cgn_reg_signal,
+ phba->cgn_reg_fpin);
+
+ phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return -EIO;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue RDF: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return -EIO;
+ }
+ return 0;
+}
+
+ /**
+ * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
+ * @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.
+ *
+ * A received RDF implies a possible change to fabric supported diagnostic
+ * functions. This routine sends LS_ACC and then has the Nx_Port issue a new
+ * RDF request to reregister for supported diagnostic functions.
+ *
+ * Return code
+ * 0 - Success
+ * -EIO - Failed to process received RDF
+ **/
+static int
+lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ /* Send LS_ACC */
+ if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "1623 Failed to RDF_ACC from x%x for x%x\n",
+ ndlp->nlp_DID, vport->fc_myDID);
+ return -EIO;
+ }
+
+ /* Issue new RDF for reregistering */
+ if (lpfc_issue_els_rdf(vport, 0)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "2623 Failed to re register RDF for x%x\n",
+ vport->fc_myDID);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * lpfc_least_capable_settings - helper function for EDC rsp processing
+ * @phba: pointer to lpfc hba data structure.
+ * @pcgd: pointer to congestion detection descriptor in EDC rsp.
+ *
+ * This helper routine determines the least capable setting for
+ * congestion signals, signal freq, including scale, from the
+ * congestion detection descriptor in the EDC rsp. The routine
+ * sets @phba values in preparation for a set_featues mailbox.
+ **/
+static void
+lpfc_least_capable_settings(struct lpfc_hba *phba,
+ struct fc_diag_cg_sig_desc *pcgd)
+{
+ u32 rsp_sig_cap = 0, drv_sig_cap = 0;
+ u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
+
+ /* Get rsp signal and frequency capabilities. */
+ rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
+ rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
+ rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
+
+ /* If the Fport does not support signals. Set FPIN only */
+ if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
+ goto out_no_support;
+
+ /* Apply the xmt scale to the xmt cycle to get the correct frequency.
+ * Adapter default is 100 millisSeconds. Convert all xmt cycle values
+ * to milliSeconds.
+ */
+ switch (rsp_sig_freq_scale) {
+ case EDC_CG_SIGFREQ_SEC:
+ rsp_sig_freq_cyc *= MSEC_PER_SEC;
+ break;
+ case EDC_CG_SIGFREQ_MSEC:
+ rsp_sig_freq_cyc = 1;
+ break;
+ default:
+ goto out_no_support;
+ }
+
+ /* Convenient shorthand. */
+ drv_sig_cap = phba->cgn_reg_signal;
+
+ /* Choose the least capable frequency. */
+ if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
+ phba->cgn_sig_freq = rsp_sig_freq_cyc;
+
+ /* Should be some common signals support. Settle on least capable
+ * signal and adjust FPIN values. Initialize defaults to ease the
+ * decision.
+ */
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
+ (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
+ drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
+ phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
+ phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
+ }
+ if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
+ if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
+ phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
+ }
+ if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
+ phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
+ phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
+ }
+ }
+
+ /* We are NOT recording signal frequency in congestion info buffer */
+ return;
+
+out_no_support:
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ phba->cgn_sig_freq = 0;
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
+}
+
+DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
+ FC_LS_TLV_DTAG_INIT);
+
+/**
+ * lpfc_cmpl_els_edc - Completion callback function for EDC
+ * @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 Exchange
+ * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
+ * notify the FPort of its Congestion and Link Fault capabilities. This
+ * routine parses the FPort's response and decides on the least common
+ * values applicable to both FPort and NPort for Warnings and Alarms that
+ * are communicated via hardware signals.
+ **/
+static void
+lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ IOCB_t *irsp_iocb;
+ struct fc_els_edc_resp *edc_rsp;
+ struct fc_tlv_desc *tlv;
+ struct fc_diag_cg_sig_desc *pcgd;
+ struct fc_diag_lnkflt_desc *plnkflt;
+ struct lpfc_dmabuf *pcmd, *prsp;
+ const char *dtag_nm;
+ u32 *pdata, dtag;
+ int desc_cnt = 0, bytes_remain;
+ bool rcv_cap_desc = false;
+ struct lpfc_nodelist *ndlp;
+ u32 ulp_status, ulp_word4, tmo, did, iotag;
+
+ ndlp = cmdiocb->ndlp;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+ did = get_job_els_rsp64_did(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(rspiocb);
+ iotag = get_wqe_reqtag(rspiocb);
+ } else {
+ irsp_iocb = &rspiocb->iocb;
+ tmo = irsp_iocb->ulpTimeout;
+ iotag = irsp_iocb->ulpIoTag;
+ }
+
+ lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
+ "EDC cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+
+ /* ELS cmd tag <ulpIoTag> completes */
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
+ iotag, ulp_status, ulp_word4, tmo);
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ if (!pcmd)
+ goto out;
+
+ pdata = (u32 *)pcmd->virt;
+ if (!pdata)
+ goto out;
+
+ /* Need to clear signal values, send features MB and RDF with FPIN. */
+ if (ulp_status)
+ goto out;
+
+ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+
+ edc_rsp = prsp->virt;
+ if (!edc_rsp)
+ goto out;
+
+ /* ELS cmd tag <ulpIoTag> completes */
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "4676 Fabric EDC Rsp: "
+ "0x%02x, 0x%08x\n",
+ edc_rsp->acc_hdr.la_cmd,
+ be32_to_cpu(edc_rsp->desc_list_len));
+
+ /*
+ * Payload length in bytes is the response descriptor list
+ * length minus the 12 bytes of Link Service Request
+ * Information descriptor in the reply.
+ */
+ bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
+ sizeof(struct fc_els_lsri_desc);
+ if (bytes_remain <= 0)
+ goto out;
+
+ tlv = edc_rsp->desc;
+
+ /*
+ * cycle through EDC diagnostic descriptors to find the
+ * congestion signaling capability descriptor
+ */
+ while (bytes_remain) {
+ if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6461 Truncated TLV hdr on "
+ "Diagnostic descriptor[%d]\n",
+ desc_cnt);
+ goto out;
+ }
+
+ dtag = be32_to_cpu(tlv->desc_tag);
+ switch (dtag) {
+ case ELS_DTAG_LNK_FAULT_CAP:
+ if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
+ sizeof(struct fc_diag_lnkflt_desc)) {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "6462 Truncated Link Fault Diagnostic "
+ "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
+ desc_cnt, bytes_remain,
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
+ sizeof(struct fc_diag_lnkflt_desc));
+ goto out;
+ }
+ plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_ELS | LOG_LDS_EVENT,
+ "4617 Link Fault Desc Data: 0x%08x 0x%08x "
+ "0x%08x 0x%08x 0x%08x\n",
+ be32_to_cpu(plnkflt->desc_tag),
+ be32_to_cpu(plnkflt->desc_len),
+ be32_to_cpu(
+ plnkflt->degrade_activate_threshold),
+ be32_to_cpu(
+ plnkflt->degrade_deactivate_threshold),
+ be32_to_cpu(plnkflt->fec_degrade_interval));
+ break;
+ case ELS_DTAG_CG_SIGNAL_CAP:
+ if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
+ sizeof(struct fc_diag_cg_sig_desc)) {
+ lpfc_printf_log(
+ phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6463 Truncated Cgn Signal Diagnostic "
+ "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
+ desc_cnt, bytes_remain,
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
+ sizeof(struct fc_diag_cg_sig_desc));
+ goto out;
+ }
+
+ pcgd = (struct fc_diag_cg_sig_desc *)tlv;
+ lpfc_printf_log(
+ phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "4616 CGN Desc Data: 0x%08x 0x%08x "
+ "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
+ be32_to_cpu(pcgd->desc_tag),
+ be32_to_cpu(pcgd->desc_len),
+ be32_to_cpu(pcgd->xmt_signal_capability),
+ be16_to_cpu(pcgd->xmt_signal_frequency.count),
+ be16_to_cpu(pcgd->xmt_signal_frequency.units),
+ be32_to_cpu(pcgd->rcv_signal_capability),
+ be16_to_cpu(pcgd->rcv_signal_frequency.count),
+ be16_to_cpu(pcgd->rcv_signal_frequency.units));
+
+ /* Compare driver and Fport capabilities and choose
+ * least common.
+ */
+ lpfc_least_capable_settings(phba, pcgd);
+ rcv_cap_desc = true;
+ break;
+ default:
+ dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "4919 unknown Diagnostic "
+ "Descriptor[%d]: tag x%x (%s)\n",
+ desc_cnt, dtag, dtag_nm);
+ }
+
+ bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
+ tlv = fc_tlv_next_desc(tlv);
+ desc_cnt++;
+ }
+
+out:
+ if (!rcv_cap_desc) {
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ phba->cgn_sig_freq = 0;
+ lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
+ "4202 EDC rsp error - sending RDF "
+ "for FPIN only.\n");
+ }
+
+ lpfc_config_cgn_signal(phba);
+
+ /* Check to see if link went down during discovery */
+ lpfc_els_chk_latt(phba->pport);
+ lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
+ "EDC Cmpl: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+static void
+lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv;
+
+ lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP);
+ lft->desc_len = cpu_to_be32(
+ FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc));
+
+ lft->degrade_activate_threshold =
+ cpu_to_be32(phba->degrade_activate_threshold);
+ lft->degrade_deactivate_threshold =
+ cpu_to_be32(phba->degrade_deactivate_threshold);
+ lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval);
+}
+
+static void
+lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv;
+
+ /* We are assuming cgd was zero'ed before calling this routine */
+
+ /* Configure the congestion detection capability */
+ cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
+
+ /* Descriptor len doesn't include the tag or len fields. */
+ cgd->desc_len = cpu_to_be32(
+ FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
+
+ /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
+ * xmt_signal_frequency.count already set to 0.
+ * xmt_signal_frequency.units already set to 0.
+ */
+
+ if (phba->cmf_active_mode == LPFC_CFG_OFF) {
+ /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
+ * rcv_signal_frequency.count already set to 0.
+ * rcv_signal_frequency.units already set to 0.
+ */
+ phba->cgn_sig_freq = 0;
+ return;
+ }
+ switch (phba->cgn_reg_signal) {
+ case EDC_CG_SIG_WARN_ONLY:
+ cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
+ break;
+ case EDC_CG_SIG_WARN_ALARM:
+ cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
+ break;
+ default:
+ /* rcv_signal_capability left 0 thus no support */
+ break;
+ }
+
+ /* We start negotiation with lpfc_fabric_cgn_frequency, after
+ * the completion we settle on the higher frequency.
+ */
+ cgd->rcv_signal_frequency.count =
+ cpu_to_be16(lpfc_fabric_cgn_frequency);
+ cgd->rcv_signal_frequency.units =
+ cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
+}
+
+static bool
+lpfc_link_is_lds_capable(struct lpfc_hba *phba)
+{
+ if (!(phba->lmt & LMT_64Gb))
+ return false;
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return false;
+
+ if (phba->sli4_hba.conf_trunk) {
+ if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G)
+ return true;
+ } else if (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) {
+ return true;
+ }
+ return false;
+}
+
+ /**
+ * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @retry: retry counter for the command iocb.
+ *
+ * This routine issues an ELS EDC to the F-Port Controller to communicate
+ * this N_Port's support of hardware signals in its Congestion
+ * Capabilities Descriptor.
+ *
+ * Note: This routine does not check if one or more signals are
+ * set in the cgn_reg_signal parameter. The caller makes the
+ * decision to enforce cgn_reg_signal as nonzero or zero depending
+ * on the conditions. During Fabric requests, the driver
+ * requires cgn_reg_signals to be nonzero. But a dynamic request
+ * to set the congestion mode to OFF from Monitor or Manage
+ * would correctly issue an EDC with no signals enabled to
+ * turn off switch functionality and then update the FW.
+ *
+ * Return code
+ * 0 - Successfully issued edc command
+ * 1 - Failed to issue edc command
+ **/
+int
+lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ struct fc_els_edc *edc_req;
+ struct fc_tlv_desc *tlv;
+ u16 cmdsize;
+ struct lpfc_nodelist *ndlp;
+ u8 *pcmd = NULL;
+ u32 cgn_desc_size, lft_desc_size;
+ int rc;
+
+ if (vport->port_type == LPFC_NPIV_PORT)
+ return -EACCES;
+
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
+ return -ENODEV;
+
+ cgn_desc_size = (phba->cgn_init_reg_signal) ?
+ sizeof(struct fc_diag_cg_sig_desc) : 0;
+ lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
+ sizeof(struct fc_diag_lnkflt_desc) : 0;
+ cmdsize = cgn_desc_size + lft_desc_size;
+
+ /* Skip EDC if no applicable descriptors */
+ if (!cmdsize)
+ goto try_rdf;
+
+ cmdsize += sizeof(struct fc_els_edc);
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_EDC);
+ if (!elsiocb)
+ goto try_rdf;
+
+ /* Configure the payload for the supported Diagnostics capabilities. */
+ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
+ memset(pcmd, 0, cmdsize);
+ edc_req = (struct fc_els_edc *)pcmd;
+ edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size);
+ edc_req->edc_cmd = ELS_EDC;
+ tlv = edc_req->desc;
+
+ if (cgn_desc_size) {
+ lpfc_format_edc_cgn_desc(phba, tlv);
+ phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
+ tlv = fc_tlv_next_desc(tlv);
+ }
+
+ if (lft_desc_size)
+ lpfc_format_edc_lft_desc(phba, tlv);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
+ "4623 Xmit EDC to remote "
+ "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
+ ndlp->nlp_DID, phba->cgn_reg_signal,
+ phba->cgn_reg_fpin);
+
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return -EIO;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue EDC: did:x%x refcnt %d",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ /* The additional lpfc_nlp_put will cause the following
+ * lpfc_els_free_iocb routine to trigger the rlease of
+ * the node.
+ */
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ goto try_rdf;
+ }
+ return 0;
+try_rdf:
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ rc = lpfc_issue_els_rdf(vport, 0);
+ return rc;
+}
+
+/**
+ * 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(&nlp->lock);
+ nlp->nlp_flag &= ~NLP_DELAY_TMO;
+ spin_unlock_irq(&nlp->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(&nlp->lock);
+ nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&nlp->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
+ * @t: 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(struct timer_list *t)
+{
+ struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
+ 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;
+ uint32_t cmd, retry;
+
+ spin_lock_irq(&ndlp->lock);
+ cmd = ndlp->nlp_last_elscmd;
+ ndlp->nlp_last_elscmd = 0;
+
+ if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
+ spin_unlock_irq(&ndlp->lock);
+ return;
+ }
+
+ ndlp->nlp_flag &= ~NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->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:
+ case ELS_CMD_NVMEPRLI:
+ 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_LOGO_ISSUE);
+ }
+ break;
+ case ELS_CMD_FDISC:
+ if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI))
+ lpfc_issue_els_fdisc(vport, ndlp, retry);
+ break;
+ }
+ return;
+}
+
+/**
+ * lpfc_link_reset - Issue link reset
+ * @vport: pointer to a virtual N_Port data structure.
+ *
+ * This routine performs link reset by sending INIT_LINK mailbox command.
+ * For SLI-3 adapter, link attention interrupt is enabled before issuing
+ * INIT_LINK mailbox command.
+ *
+ * Return code
+ * 0 - Link reset initiated successfully
+ * 1 - Failed to initiate link reset
+ **/
+int
+lpfc_link_reset(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t control;
+ int rc;
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
+ "2851 Attempt link reset\n");
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2852 Failed to allocate mbox memory");
+ return 1;
+ }
+
+ /* Enable Link attention interrupts */
+ if (phba->sli_rev <= LPFC_SLI_REV3) {
+ spin_lock_irq(&phba->hbalock);
+ phba->sli.sli_flag |= LPFC_PROCESS_LA;
+ control = readl(phba->HCregaddr);
+ control |= HC_LAINT_ENA;
+ writel(control, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ spin_unlock_irq(&phba->hbalock);
+ }
+
+ lpfc_init_link(phba, mbox, phba->cfg_topology,
+ phba->cfg_link_speed);
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2853 Failed to issue INIT_LINK "
+ "mbox command, rc:x%x\n", rc);
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * 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 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;
+ union lpfc_wqe128 *irsp = &rspiocb->wqe;
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
+ 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;
+ int link_reset = 0, rc;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+
+
+ /* Note: cmd_dmabuf may be 0 for internal driver abort
+ * of delays ELS command.
+ */
+
+ if (pcmd && pcmd->virt) {
+ elscmd = (uint32_t *) (pcmd->virt);
+ cmd = *elscmd++;
+ }
+
+ if (ndlp)
+ did = ndlp->nlp_DID;
+ else {
+ /* We should only hit this case for retrying PLOGI */
+ did = get_job_els_rsp64_did(phba, rspiocb);
+ ndlp = lpfc_findnode_did(vport, did);
+ if (!ndlp && (cmd != ELS_CMD_PLOGI))
+ return 0;
+ }
+
+ 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), ulp_word4, did);
+
+ switch (ulp_status) {
+ 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_lxritag, 0, 0);
+ }
+ break;
+ case IOSTAT_LOCAL_REJECT:
+ switch ((ulp_word4 & IOERR_PARAM_MASK)) {
+ case IOERR_LOOP_OPEN_FAILURE:
+ if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
+ delay = 1000;
+ retry = 1;
+ break;
+
+ case IOERR_ILLEGAL_COMMAND:
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "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_INVALID_RPI:
+ if (cmd == ELS_CMD_PLOGI &&
+ did == NameServer_DID) {
+ /* Continue forever if plogi to */
+ /* the nameserver fails */
+ maxretry = 0;
+ delay = 100;
+ } else if (cmd == ELS_CMD_PRLI &&
+ ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
+ /* State-command disagreement. The PRLI was
+ * failed with an invalid rpi meaning there
+ * some unexpected state change. Don't retry.
+ */
+ maxretry = 0;
+ retry = 0;
+ break;
+ }
+ retry = 1;
+ break;
+
+ case IOERR_SEQUENCE_TIMEOUT:
+ if (cmd == ELS_CMD_PLOGI &&
+ did == NameServer_DID &&
+ (cmdiocb->retry + 1) == maxretry) {
+ /* Reset the Link */
+ link_reset = 1;
+ break;
+ }
+ retry = 1;
+ delay = 100;
+ break;
+ case IOERR_SLI_ABORTED:
+ /* Retry ELS PLOGI command?
+ * Possibly the rport just wasn't ready.
+ */
+ if (cmd == ELS_CMD_PLOGI) {
+ /* No retry if state change */
+ if (ndlp &&
+ ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
+ goto out_retry;
+ retry = 1;
+ maxretry = 2;
+ }
+ break;
+ }
+ break;
+
+ case IOSTAT_NPORT_RJT:
+ case IOSTAT_FABRIC_RJT:
+ if (ulp_word4 & 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.ls_rjt_error_be = cpu_to_be32(ulp_word4);
+ /* Added for Vendor specifc support
+ * Just keep retrying for these Rsn / Exp codes
+ */
+ if ((vport->fc_flag & FC_PT2PT) &&
+ cmd == ELS_CMD_NVMEPRLI) {
+ switch (stat.un.b.lsRjtRsnCode) {
+ case LSRJT_UNABLE_TPC:
+ case LSRJT_INVALID_CMD:
+ case LSRJT_LOGICAL_ERR:
+ case LSRJT_CMD_UNSUPPORTED:
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
+ "0168 NVME PRLI LS_RJT "
+ "reason %x port doesn't "
+ "support NVME, disabling NVME\n",
+ stat.un.b.lsRjtRsnCode);
+ retry = 0;
+ vport->fc_flag |= FC_PT2PT_NO_NVME;
+ goto out_retry;
+ }
+ }
+ switch (stat.un.b.lsRjtRsnCode) {
+ case LSRJT_UNABLE_TPC:
+ /* Special case for PRLI LS_RJTs. Recall that lpfc
+ * uses a single routine to issue both PRLI FC4 types.
+ * If the PRLI is rejected because that FC4 type
+ * isn't really supported, don't retry and cause
+ * multiple transport registrations. Otherwise, parse
+ * the reason code/reason code explanation and take the
+ * appropriate action.
+ */
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_DISCOVERY | LOG_ELS | LOG_NODE,
+ "0153 ELS cmd x%x LS_RJT by x%x. "
+ "RsnCode x%x RsnCodeExp x%x\n",
+ cmd, did, stat.un.b.lsRjtRsnCode,
+ stat.un.b.lsRjtRsnCodeExp);
+
+ switch (stat.un.b.lsRjtRsnCodeExp) {
+ case LSEXP_CANT_GIVE_DATA:
+ case LSEXP_CMD_IN_PROGRESS:
+ if (cmd == ELS_CMD_PLOGI) {
+ delay = 1000;
+ maxretry = 48;
+ }
+ retry = 1;
+ break;
+ case LSEXP_REQ_UNSUPPORTED:
+ case LSEXP_NO_RSRC_ASSIGN:
+ /* These explanation codes get no retry. */
+ if (cmd == ELS_CMD_PRLI ||
+ cmd == ELS_CMD_NVMEPRLI)
+ break;
+ fallthrough;
+ default:
+ /* Limit the delay and retry action to a limited
+ * cmd set. There are other ELS commands where
+ * a retry is not expected.
+ */
+ if (cmd == ELS_CMD_PLOGI ||
+ cmd == ELS_CMD_PRLI ||
+ cmd == ELS_CMD_NVMEPRLI) {
+ 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_TRACE_EVENT,
+ "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) ||
+ (cmd == ELS_CMD_NVMEPRLI)) {
+ 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;
+ } else if (cmd == ELS_CMD_FLOGI &&
+ stat.un.b.lsRjtRsnCodeExp ==
+ LSEXP_NOTHING_MORE) {
+ vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
+ retry = 1;
+ lpfc_printf_vlog(vport, KERN_ERR,
+ LOG_TRACE_EVENT,
+ "0820 FLOGI Failed (x%x). "
+ "BBCredit Not Supported\n",
+ stat.un.lsRjtError);
+ }
+ 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_TRACE_EVENT,
+ "0122 FDISC Failed (x%x). "
+ "Fabric Detected Bad WWN\n",
+ stat.un.lsRjtError);
+ lpfc_vport_set_state(vport,
+ FC_VPORT_FABRIC_REJ_WWN);
+ }
+ break;
+ case LSRJT_VENDOR_UNIQUE:
+ if ((stat.un.b.vendorUnique == 0x45) &&
+ (cmd == ELS_CMD_FLOGI)) {
+ goto out_retry;
+ }
+ break;
+ case LSRJT_CMD_UNSUPPORTED:
+ /* lpfc nvmet returns this type of LS_RJT when it
+ * receives an FCP PRLI because lpfc nvmet only
+ * support NVME. ELS request is terminated for FCP4
+ * on this rport.
+ */
+ if (stat.un.b.lsRjtRsnCodeExp ==
+ LSEXP_REQ_UNSUPPORTED) {
+ if (cmd == ELS_CMD_PRLI)
+ goto out_retry;
+ }
+ break;
+ }
+ break;
+
+ case IOSTAT_INTERMED_RSP:
+ case IOSTAT_BA_RJT:
+ break;
+
+ default:
+ break;
+ }
+
+ if (link_reset) {
+ rc = lpfc_link_reset(vport);
+ if (rc) {
+ /* Do not give up. Retry PLOGI one more time and attempt
+ * link reset if PLOGI fails again.
+ */
+ retry = 1;
+ delay = 100;
+ goto out_retry;
+ }
+ return 1;
+ }
+
+ if (did == FDMI_DID)
+ retry = 1;
+
+ if ((cmd == ELS_CMD_FLOGI) &&
+ (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
+ !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
+ /* FLOGI retry policy */
+ retry = 1;
+ /* retry FLOGI forever */
+ if (phba->link_flag != LS_LOOPBACK_MODE)
+ maxretry = 0;
+ else
+ maxretry = 2;
+
+ if (cmdiocb->retry >= 100)
+ delay = 5000;
+ else if (cmdiocb->retry >= 32)
+ delay = 1000;
+ } else if ((cmd == ELS_CMD_FDISC) &&
+ !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
+ /* 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;
+
+out_retry:
+ if (retry) {
+ if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
+ /* Stop retrying PLOGI and FDISC if in FCF discovery */
+ if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2849 Stop retry ELS command "
+ "x%x to remote NPORT x%x, "
+ "Data: x%x x%x\n", cmd, did,
+ cmdiocb->retry, delay);
+ 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)) &&
+ ((ulp_status != IOSTAT_LOCAL_REJECT) ||
+ ((ulp_word4 & IOERR_PARAM_MASK) !=
+ IOERR_NO_RESOURCES))) {
+ /* Don't reset timer for no resources */
+
+ /* If discovery / RSCN timer is running, reset it */
+ if (timer_pending(&vport->fc_disctmo) ||
+ (vport->fc_flag & FC_RSCN_MODE))
+ lpfc_set_disctmo(vport);
+ }
+
+ phba->fc_stat.elsXmitRetry++;
+ if (ndlp && delay) {
+ phba->fc_stat.elsDelayRetry++;
+ ndlp->nlp_retry = cmdiocb->retry;
+
+ /* delay is specified in milliseconds */
+ mod_timer(&ndlp->nlp_delayfunc,
+ jiffies + msecs_to_jiffies(delay));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->lock);
+
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ if ((cmd == ELS_CMD_PRLI) ||
+ (cmd == ELS_CMD_NVMEPRLI))
+ lpfc_nlp_set_state(vport, ndlp,
+ NLP_STE_PRLI_ISSUE);
+ else if (cmd != ELS_CMD_ADISC)
+ 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) {
+ 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:
+ case ELS_CMD_NVMEPRLI:
+ 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_LOGO_ISSUE);
+ 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_TRACE_EVENT,
+ "0137 No retry ELS command x%x to remote "
+ "NPORT x%x: Out of Resources: Error:x%x/%x\n",
+ cmd, did, ulp_status,
+ ulp_word4);
+ }
+ 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, ulp_status,
+ ulp_word4);
+ }
+ 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:
+ * cmd_dmabuf - reference to cmd.
+ * cmd_dmabuf->next - reference to rsp
+ * rsp_dmabuf - unused
+ * bpl_dmabuf - 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;
+
+ /* The I/O iocb is complete. Clear the node and first dmbuf */
+ elsiocb->ndlp = NULL;
+
+ /* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
+ if (elsiocb->cmd_dmabuf) {
+ if (elsiocb->cmd_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->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
+ buf_ptr = elsiocb->cmd_dmabuf;
+ elsiocb->cmd_dmabuf = 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 = elsiocb->cmd_dmabuf;
+ lpfc_els_free_data(phba, buf_ptr1);
+ elsiocb->cmd_dmabuf = NULL;
+ }
+ }
+
+ if (elsiocb->bpl_dmabuf) {
+ buf_ptr = elsiocb->bpl_dmabuf;
+ lpfc_els_free_bpl(phba, buf_ptr);
+ elsiocb->bpl_dmabuf = NULL;
+ }
+ 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. If the node has transitioned to NPR,
+ * this routine unregisters the RPI if it is still registered. 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 = cmdiocb->ndlp;
+ struct lpfc_vport *vport = cmdiocb->vport;
+ u32 ulp_status, ulp_word4;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
+ "ACC LOGO cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, ndlp->nlp_DID);
+ /* ACC to LOGO completes to NPort <nlp_DID> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0109 ACC to LOGO completes to NPort x%x refcnt %d "
+ "Data: x%x x%x x%x\n",
+ ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag,
+ ndlp->nlp_state, ndlp->nlp_rpi);
+
+ /* This clause allows the LOGO ACC to complete and free resources
+ * for the Fabric Domain Controller. It does deliberately skip
+ * the unreg_rpi and release rpi because some fabrics send RDP
+ * requests after logging out from the initiator.
+ */
+ if (ndlp->nlp_type & NLP_FABRIC &&
+ ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
+ goto out;
+
+ if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
+ /* If PLOGI is being retried, PLOGI completion will cleanup the
+ * node. The NLP_NPR_2B_DISC flag needs to be retained to make
+ * progress on nodes discovered from last RSCN.
+ */
+ if ((ndlp->nlp_flag & NLP_DELAY_TMO) &&
+ (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI))
+ goto out;
+
+ if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
+ lpfc_unreg_rpi(vport, ndlp);
+
+ }
+ out:
+ /*
+ * 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);
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * 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_drop_node to check
+ * whether it is appropriate to release the node.
+ **/
+void
+lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
+ u32 mbx_flag = pmb->mbox_flag;
+ u32 mbx_cmd = pmb->u.mb.mbxCommand;
+
+ if (ndlp) {
+ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+ "0006 rpi x%x DID:%x flg:%x %d x%px "
+ "mbx_cmd x%x mbx_flag x%x x%px\n",
+ ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
+ kref_read(&ndlp->kref), ndlp, mbx_cmd,
+ mbx_flag, pmb);
+
+ /* This ends the default/temporary RPI cleanup logic for this
+ * ndlp and the node and rpi needs to be released. Free the rpi
+ * first on an UNREG_LOGIN and then release the final
+ * references.
+ */
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+ if (mbx_cmd == MBX_UNREG_LOGIN)
+ ndlp->nlp_flag &= ~NLP_UNREG_INP;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_nlp_put(ndlp);
+ lpfc_drop_node(ndlp->vport, ndlp);
+ }
+
+ lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
+}
+
+/**
+ * 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.
+ **/
+static void
+lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+ struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
+ struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
+ IOCB_t *irsp;
+ LPFC_MBOXQ_t *mbox = NULL;
+ u32 ulp_status, ulp_word4, tmo, did, iotag;
+
+ if (!vport) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3177 ELS response failed\n");
+ goto out;
+ }
+ if (cmdiocb->context_un.mbox)
+ mbox = cmdiocb->context_un.mbox;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ tmo = get_wqe_tmo(cmdiocb);
+ iotag = get_wqe_reqtag(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ tmo = irsp->ulpTimeout;
+ iotag = irsp->ulpIoTag;
+ }
+
+ /* Check to see if link went down during discovery */
+ if (!ndlp || lpfc_els_chk_latt(vport)) {
+ if (mbox)
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ goto out;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
+ "ELS rsp cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+ /* 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 x%x %p %p\n",
+ iotag, ulp_status, ulp_word4, tmo,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
+ if (mbox) {
+ if (ulp_status == 0
+ && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
+ if (!lpfc_unreg_rpi(vport, ndlp) &&
+ (!(vport->fc_flag & FC_PT2PT))) {
+ if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
+ ndlp->nlp_state ==
+ NLP_STE_REG_LOGIN_ISSUE) {
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_DISCOVERY,
+ "0314 PLOGI recov "
+ "DID x%x "
+ "Data: x%x x%x x%x\n",
+ ndlp->nlp_DID,
+ ndlp->nlp_state,
+ ndlp->nlp_rpi,
+ ndlp->nlp_flag);
+ goto out_free_mbox;
+ }
+ }
+
+ /* Increment reference count to ndlp to hold the
+ * reference to ndlp for the callback function.
+ */
+ mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto out_free_mbox;
+
+ 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);
+ }
+
+ ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
+ if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
+ != MBX_NOT_FINISHED)
+ goto out;
+
+ /* Decrement the ndlp reference count we
+ * set for this failed mailbox command.
+ */
+ lpfc_nlp_put(ndlp);
+ ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+
+ /* ELS rsp: Cannot issue reg_login for <NPortid> */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "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);
+ }
+out_free_mbox:
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ }
+out:
+ if (ndlp && shost) {
+ spin_lock_irq(&ndlp->lock);
+ if (mbox)
+ ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
+ ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI;
+ spin_unlock_irq(&ndlp->lock);
+ }
+
+ /* An SLI4 NPIV instance wants to drop the node at this point under
+ * these conditions and release the RPI.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ vport && vport->port_type == LPFC_NPIV_PORT &&
+ !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
+ if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
+ if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
+ ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) {
+ lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
+ ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
+ spin_unlock_irq(&ndlp->lock);
+ }
+ lpfc_drop_node(vport, ndlp);
+ } else if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
+ ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
+ ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
+ /* Drop ndlp if there is no planned or outstanding
+ * issued PRLI.
+ *
+ * In cases when the ndlp is acting as both an initiator
+ * and target function, let our issued PRLI determine
+ * the final ndlp kref drop.
+ */
+ lpfc_drop_node(vport, ndlp);
+ }
+ }
+
+ /* Release the originating I/O reference. */
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+ return;
+}
+
+/**
+ * lpfc_els_rsp_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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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 lpfc_hba *phba = vport->phba;
+ IOCB_t *icmd;
+ IOCB_t *oldcmd;
+ union lpfc_wqe128 *wqe;
+ union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ struct serv_parm *sp;
+ uint16_t cmdsize;
+ int rc;
+ ELS_PKT *els_pkt_ptr;
+ struct fc_els_rdf_resp *rdf_resp;
+
+ 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(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+ return 1;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* XRI / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_ctxt_tag,
+ &oldwqe->xmit_els_rsp.wqe_com));
+
+ /* oxid */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_rcvoxid,
+ &oldwqe->xmit_els_rsp.wqe_com));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ icmd->unsli3.rcvsli3.ox_id =
+ oldcmd->unsli3.rcvsli3.ox_id;
+ }
+
+ pcmd = elsiocb->cmd_dmabuf->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_FLOGI:
+ 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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* XRI / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_ctxt_tag,
+ &oldwqe->xmit_els_rsp.wqe_com));
+
+ /* oxid */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_rcvoxid,
+ &oldwqe->xmit_els_rsp.wqe_com));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ icmd->unsli3.rcvsli3.ox_id =
+ oldcmd->unsli3.rcvsli3.ox_id;
+ }
+
+ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
+
+ if (mbox)
+ elsiocb->context_un.mbox = mbox;
+
+ *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
+ pcmd += sizeof(uint32_t);
+ sp = (struct serv_parm *)pcmd;
+
+ if (flag == ELS_CMD_FLOGI) {
+ /* Copy the received service parameters back */
+ memcpy(sp, &phba->fc_fabparam,
+ sizeof(struct serv_parm));
+
+ /* Clear the F_Port bit */
+ sp->cmn.fPort = 0;
+
+ /* Mark all class service parameters as invalid */
+ sp->cls1.classValid = 0;
+ sp->cls2.classValid = 0;
+ sp->cls3.classValid = 0;
+ sp->cls4.classValid = 0;
+
+ /* Copy our worldwide names */
+ memcpy(&sp->portName, &vport->fc_sparam.portName,
+ sizeof(struct lpfc_name));
+ memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
+ sizeof(struct lpfc_name));
+ } else {
+ memcpy(pcmd, &vport->fc_sparam,
+ sizeof(struct serv_parm));
+
+ sp->cmn.valid_vendor_ver_level = 0;
+ memset(sp->un.vendorVersion, 0,
+ sizeof(sp->un.vendorVersion));
+ sp->cmn.bbRcvSizeMsb &= 0xF;
+
+ /* If our firmware supports this feature, convey that
+ * info to the target using the vendor specific field.
+ */
+ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
+ sp->cmn.valid_vendor_ver_level = 1;
+ sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
+ sp->un.vv.flags =
+ cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
+ }
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
+ "Issue ACC FLOGI/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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* XRI / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_ctxt_tag,
+ &oldwqe->xmit_els_rsp.wqe_com));
+
+ /* oxid */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_rcvoxid,
+ &oldwqe->xmit_els_rsp.wqe_com));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ icmd->unsli3.rcvsli3.ox_id =
+ oldcmd->unsli3.rcvsli3.ox_id;
+ }
+
+ pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
+
+ memcpy(pcmd, oldiocb->cmd_dmabuf->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;
+ case ELS_CMD_RDF:
+ cmdsize = sizeof(*rdf_resp);
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
+ ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
+ if (!elsiocb)
+ return 1;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* XRI / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_ctxt_tag,
+ &oldwqe->xmit_els_rsp.wqe_com));
+
+ /* oxid */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ bf_get(wqe_rcvoxid,
+ &oldwqe->xmit_els_rsp.wqe_com));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ icmd->unsli3.rcvsli3.ox_id =
+ oldcmd->unsli3.rcvsli3.ox_id;
+ }
+
+ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
+ rdf_resp = (struct fc_els_rdf_resp *)pcmd;
+ memset(rdf_resp, 0, sizeof(*rdf_resp));
+ rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
+
+ /* FC-LS-5 specifies desc_list_len shall be set to 12 */
+ rdf_resp->desc_list_len = cpu_to_be32(12);
+
+ /* FC-LS-5 specifies LS REQ Information descriptor */
+ rdf_resp->lsri.desc_tag = cpu_to_be32(1);
+ rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
+ rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
+ break;
+ default:
+ return 1;
+ }
+ if (ndlp->nlp_flag & NLP_LOGO_ACC) {
+ spin_lock_irq(&ndlp->lock);
+ if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED ||
+ ndlp->nlp_flag & NLP_REG_LOGIN_SEND))
+ ndlp->nlp_flag &= ~NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
+ } else {
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ }
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ /* Xmit ELS ACC response tag <ulpIoTag> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
+ "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
+ "RPI: x%x, fc_flag x%x refcnt %d\n",
+ rc, elsiocb->iotag, elsiocb->sli4_xritag,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
+ return 0;
+}
+
+/**
+ * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
+ * @vport: pointer to a virtual N_Port data structure.
+ * @rejectError: reject response to issue
+ * @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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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)
+{
+ int rc;
+ struct lpfc_hba *phba = vport->phba;
+ IOCB_t *icmd;
+ IOCB_t *oldcmd;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+
+ 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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ 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 *)elsiocb->cmd_dmabuf->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,
+ get_job_ulpcontext(phba, elsiocb), 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->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ /* The NPIV instance is rejecting this unsolicited ELS. Make sure the
+ * node's assigned RPI gets released provided this node is not already
+ * registered with the transport.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ vport->port_type == LPFC_NPIV_PORT &&
+ !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_RELEASE_RPI;
+ spin_unlock_irq(&ndlp->lock);
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ return 0;
+}
+
+ /**
+ * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to the original lpfc command iocb data structure.
+ * @ndlp: NPort to where rsp is directed
+ *
+ * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
+ * this N_Port's support of hardware signals in its Congestion
+ * Capabilities Descriptor.
+ *
+ * Return code
+ * 0 - Successfully issued edc rsp command
+ * 1 - Failed to issue edc rsp command
+ **/
+static int
+lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct fc_els_edc_resp *edc_rsp;
+ struct fc_tlv_desc *tlv;
+ struct lpfc_iocbq *elsiocb;
+ IOCB_t *icmd, *cmd;
+ union lpfc_wqe128 *wqe;
+ u32 cgn_desc_size, lft_desc_size;
+ u16 cmdsize;
+ uint8_t *pcmd;
+ int rc;
+
+ cmdsize = sizeof(struct fc_els_edc_resp);
+ cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
+ lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
+ sizeof(struct fc_diag_lnkflt_desc) : 0;
+ cmdsize += cgn_desc_size + lft_desc_size;
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
+ ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
+ if (!elsiocb)
+ return 1;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, cmdiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ cmd = &cmdiocb->iocb;
+ icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
+ icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
+ }
+
+ pcmd = elsiocb->cmd_dmabuf->virt;
+ memset(pcmd, 0, cmdsize);
+
+ edc_rsp = (struct fc_els_edc_resp *)pcmd;
+ edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC;
+ edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) +
+ cgn_desc_size + lft_desc_size);
+ edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
+ edc_rsp->lsri.desc_len = cpu_to_be32(
+ FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
+ edc_rsp->lsri.rqst_w0.cmd = ELS_EDC;
+ tlv = edc_rsp->desc;
+ lpfc_format_edc_cgn_desc(phba, tlv);
+ tlv = fc_tlv_next_desc(tlv);
+ if (lft_desc_size)
+ lpfc_format_edc_lft_desc(phba, tlv);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
+ "Issue EDC ACC: did:x%x flg:x%x refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag,
+ kref_read(&ndlp->kref));
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ /* Xmit ELS ACC response tag <ulpIoTag> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
+ "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x "
+ "RPI: x%x, fc_flag x%x\n",
+ rc, elsiocb->iotag, elsiocb->sli4_xritag,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi, vport->fc_flag);
+
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the ADISC Accept response
+ * ELS IOCB command.
+ *
+ * Return code
+ * 0 - Successfully issued acc adisc response
+ * 1 - Failed to issue adisc acc response
+ **/
+int
+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;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int rc;
+ u32 ulp_context;
+
+ 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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* XRI / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb));
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ /* oxid */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ ulp_context = elsiocb->iocb.ulpContext;
+ 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, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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 refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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;
+ struct lpfc_nvme_prli *npr_nvme;
+ lpfc_vpd_t *vpd;
+ IOCB_t *icmd;
+ IOCB_t *oldcmd;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ uint32_t prli_fc4_req, *req_payload;
+ struct lpfc_dmabuf *req_buf;
+ int rc;
+ u32 elsrspcmd, ulp_context;
+
+ /* Need the incoming PRLI payload to determine if the ACC is for an
+ * FC4 or NVME PRLI type. The PRLI type is at word 1.
+ */
+ req_buf = oldiocb->cmd_dmabuf;
+ req_payload = (((uint32_t *)req_buf->virt) + 1);
+
+ /* PRLI type payload is at byte 3 for FCP or NVME. */
+ prli_fc4_req = be32_to_cpu(*req_payload);
+ prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
+ prli_fc4_req, *((uint32_t *)req_payload));
+
+ if (prli_fc4_req == PRLI_FCP_TYPE) {
+ cmdsize = sizeof(uint32_t) + sizeof(PRLI);
+ elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
+ } else if (prli_fc4_req == PRLI_NVME_TYPE) {
+ cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
+ elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
+ } else {
+ return 1;
+ }
+
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
+ ndlp->nlp_DID, elsrspcmd);
+ if (!elsiocb)
+ return 1;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ ulp_context = elsiocb->iocb.ulpContext;
+ 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, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+ memset(pcmd, 0, cmdsize);
+
+ *((uint32_t *)(pcmd)) = elsrspcmd;
+ pcmd += sizeof(uint32_t);
+
+ /* For PRLI, remainder of payload is PRLI parameter page */
+ vpd = &phba->vpd;
+
+ if (prli_fc4_req == PRLI_FCP_TYPE) {
+ /*
+ * If the remote port is a target and our firmware version
+ * is 3.20 or later, set the following bits for FC-TAPE
+ * support.
+ */
+ npr = (PRLI *) pcmd;
+ 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;
+
+ /* Set image pair for complementary pairs only. */
+ if (ndlp->nlp_type & NLP_FCP_TARGET)
+ npr->estabImagePair = 1;
+ else
+ npr->estabImagePair = 0;
+ npr->readXferRdyDis = 1;
+ npr->ConfmComplAllowed = 1;
+ npr->prliType = PRLI_FCP_TYPE;
+ npr->initiatorFunc = 1;
+
+ /* Xmit PRLI ACC response tag <ulpIoTag> */
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_ELS | LOG_NODE | LOG_DISCOVERY,
+ "6014 FCP issue PRLI ACC imgpair %d "
+ "retry %d task %d\n",
+ npr->estabImagePair,
+ npr->Retry, npr->TaskRetryIdReq);
+
+ } else if (prli_fc4_req == PRLI_NVME_TYPE) {
+ /* Respond with an NVME PRLI Type */
+ npr_nvme = (struct lpfc_nvme_prli *) pcmd;
+ bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
+ bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
+ bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
+ if (phba->nvmet_support) {
+ bf_set(prli_tgt, npr_nvme, 1);
+ bf_set(prli_disc, npr_nvme, 1);
+ if (phba->cfg_nvme_enable_fb) {
+ bf_set(prli_fba, npr_nvme, 1);
+
+ /* TBD. Target mode needs to post buffers
+ * that support the configured first burst
+ * byte size.
+ */
+ bf_set(prli_fb_sz, npr_nvme,
+ phba->cfg_nvmet_fb_size);
+ }
+ } else {
+ bf_set(prli_init, npr_nvme, 1);
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+ "6015 NVME issue PRLI ACC word1 x%08x "
+ "word4 x%08x word5 x%08x flag x%x, "
+ "fcp_info x%x nlp_type x%x\n",
+ npr_nvme->word1, npr_nvme->word4,
+ npr_nvme->word5, ndlp->nlp_flag,
+ ndlp->nlp_fcp_info, ndlp->nlp_type);
+ npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
+ npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
+ npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
+ } else
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
+ prli_fc4_req, ndlp->nlp_fc4_type,
+ ndlp->nlp_DID);
+
+ 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, kref_read(&ndlp->kref));
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function.
+ *
+ * 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;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int rc;
+ u32 ulp_context;
+
+ 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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ ulp_context = elsiocb->iocb.ulpContext;
+ 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, ulp_context);
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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 refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 *)iocb->cmd_dmabuf->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,
+ get_wqe_reqtag(iocb),
+ get_job_ulpcontext(phba, iocb));
+
+ 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;
+ IOCB_t *icmd, *oldcmd;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int rc;
+ u32 ulp_context;
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
+ else
+ 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;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ oldcmd = &oldiocb->iocb;
+ icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
+ ulp_context = elsiocb->iocb.ulpContext;
+ icmd->unsli3.rcvsli3.ox_id =
+ oldcmd->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, ulp_context);
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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 refcnt %d",
+ ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 (ndlp->nlp_state != NLP_STE_NPR_NODE ||
+ !(ndlp->nlp_flag & NLP_NPR_ADISC))
+ continue;
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+
+ if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
+ /* This node was marked for ADISC but was not picked
+ * for discovery. This is possible if the node was
+ * missing in gidft response.
+ *
+ * At time of marking node for ADISC, we skipped unreg
+ * from backend
+ */
+ lpfc_nlp_unreg_node(vport, ndlp);
+ lpfc_unreg_rpi(vport, ndlp);
+ continue;
+ }
+
+ 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 (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;
+ }
+ }
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "6452 Discover PLOGI %d flag x%x\n",
+ sentplogi, vport->fc_flag);
+
+ 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;
+}
+
+static uint32_t
+lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
+ uint32_t word0)
+{
+
+ desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
+ desc->payload.els_req = word0;
+ desc->length = cpu_to_be32(sizeof(desc->payload));
+
+ return sizeof(struct fc_rdp_link_service_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
+ uint8_t *page_a0, uint8_t *page_a2)
+{
+ uint16_t wavelength;
+ uint16_t temperature;
+ uint16_t rx_power;
+ uint16_t tx_bias;
+ uint16_t tx_power;
+ uint16_t vcc;
+ uint16_t flag = 0;
+ struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
+ struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
+
+ desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
+
+ trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
+ &page_a0[SSF_TRANSCEIVER_CODE_B4];
+ trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
+ &page_a0[SSF_TRANSCEIVER_CODE_B5];
+
+ if ((trasn_code_byte4->fc_sw_laser) ||
+ (trasn_code_byte5->fc_sw_laser_sl) ||
+ (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */
+ flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
+ } else if (trasn_code_byte4->fc_lw_laser) {
+ wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
+ page_a0[SSF_WAVELENGTH_B0];
+ if (wavelength == SFP_WAVELENGTH_LC1310)
+ flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
+ if (wavelength == SFP_WAVELENGTH_LL1550)
+ flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
+ }
+ /* check if its SFP+ */
+ flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
+ SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
+ << SFP_FLAG_CT_SHIFT;
+
+ /* check if its OPTICAL */
+ flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
+ SFP_FLAG_IS_OPTICAL_PORT : 0)
+ << SFP_FLAG_IS_OPTICAL_SHIFT;
+
+ temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
+ page_a2[SFF_TEMPERATURE_B0]);
+ vcc = (page_a2[SFF_VCC_B1] << 8 |
+ page_a2[SFF_VCC_B0]);
+ tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
+ page_a2[SFF_TXPOWER_B0]);
+ tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
+ page_a2[SFF_TX_BIAS_CURRENT_B0]);
+ rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
+ page_a2[SFF_RXPOWER_B0]);
+ desc->sfp_info.temperature = cpu_to_be16(temperature);
+ desc->sfp_info.rx_power = cpu_to_be16(rx_power);
+ desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
+ desc->sfp_info.tx_power = cpu_to_be16(tx_power);
+ desc->sfp_info.vcc = cpu_to_be16(vcc);
+
+ desc->sfp_info.flags = cpu_to_be16(flag);
+ desc->length = cpu_to_be32(sizeof(desc->sfp_info));
+
+ return sizeof(struct fc_rdp_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
+ READ_LNK_VAR *stat)
+{
+ uint32_t type;
+
+ desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
+
+ type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
+
+ desc->info.port_type = cpu_to_be32(type);
+
+ desc->info.link_status.link_failure_cnt =
+ cpu_to_be32(stat->linkFailureCnt);
+ desc->info.link_status.loss_of_synch_cnt =
+ cpu_to_be32(stat->lossSyncCnt);
+ desc->info.link_status.loss_of_signal_cnt =
+ cpu_to_be32(stat->lossSignalCnt);
+ desc->info.link_status.primitive_seq_proto_err =
+ cpu_to_be32(stat->primSeqErrCnt);
+ desc->info.link_status.invalid_trans_word =
+ cpu_to_be32(stat->invalidXmitWord);
+ desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
+
+ desc->length = cpu_to_be32(sizeof(desc->info));
+
+ return sizeof(struct fc_rdp_link_error_status_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
+ struct lpfc_vport *vport)
+{
+ uint32_t bbCredit;
+
+ desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
+
+ bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
+ (vport->fc_sparam.cmn.bbCreditMsb << 8);
+ desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
+ if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
+ bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
+ (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
+ desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
+ } else {
+ desc->bbc_info.attached_port_bbc = 0;
+ }
+
+ desc->bbc_info.rtt = 0;
+ desc->length = cpu_to_be32(sizeof(desc->bbc_info));
+
+ return sizeof(struct fc_rdp_bbc_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
+ struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
+{
+ uint32_t flags = 0;
+
+ desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
+
+ desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
+ desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
+ desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
+ desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
+
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
+ flags |= RDP_OET_HIGH_ALARM;
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
+ flags |= RDP_OET_LOW_ALARM;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
+ flags |= RDP_OET_HIGH_WARNING;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
+ flags |= RDP_OET_LOW_WARNING;
+
+ flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
+ desc->oed_info.function_flags = cpu_to_be32(flags);
+ desc->length = cpu_to_be32(sizeof(desc->oed_info));
+ return sizeof(struct fc_rdp_oed_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
+ struct fc_rdp_oed_sfp_desc *desc,
+ uint8_t *page_a2)
+{
+ uint32_t flags = 0;
+
+ desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
+
+ desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
+ desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
+ desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
+ desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
+
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
+ flags |= RDP_OET_HIGH_ALARM;
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
+ flags |= RDP_OET_LOW_ALARM;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
+ flags |= RDP_OET_HIGH_WARNING;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
+ flags |= RDP_OET_LOW_WARNING;
+
+ flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
+ desc->oed_info.function_flags = cpu_to_be32(flags);
+ desc->length = cpu_to_be32(sizeof(desc->oed_info));
+ return sizeof(struct fc_rdp_oed_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
+ struct fc_rdp_oed_sfp_desc *desc,
+ uint8_t *page_a2)
+{
+ uint32_t flags = 0;
+
+ desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
+
+ desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
+ desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
+ desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
+ desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
+
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
+ flags |= RDP_OET_HIGH_ALARM;
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
+ flags |= RDP_OET_LOW_ALARM;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
+ flags |= RDP_OET_HIGH_WARNING;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
+ flags |= RDP_OET_LOW_WARNING;
+
+ flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
+ desc->oed_info.function_flags = cpu_to_be32(flags);
+ desc->length = cpu_to_be32(sizeof(desc->oed_info));
+ return sizeof(struct fc_rdp_oed_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
+ struct fc_rdp_oed_sfp_desc *desc,
+ uint8_t *page_a2)
+{
+ uint32_t flags = 0;
+
+ desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
+
+ desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
+ desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
+ desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
+ desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
+
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
+ flags |= RDP_OET_HIGH_ALARM;
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
+ flags |= RDP_OET_LOW_ALARM;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
+ flags |= RDP_OET_HIGH_WARNING;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
+ flags |= RDP_OET_LOW_WARNING;
+
+ flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
+ desc->oed_info.function_flags = cpu_to_be32(flags);
+ desc->length = cpu_to_be32(sizeof(desc->oed_info));
+ return sizeof(struct fc_rdp_oed_sfp_desc);
+}
+
+
+static uint32_t
+lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
+ struct fc_rdp_oed_sfp_desc *desc,
+ uint8_t *page_a2)
+{
+ uint32_t flags = 0;
+
+ desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
+
+ desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
+ desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
+ desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
+ desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
+
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
+ flags |= RDP_OET_HIGH_ALARM;
+ if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
+ flags |= RDP_OET_LOW_ALARM;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
+ flags |= RDP_OET_HIGH_WARNING;
+ if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
+ flags |= RDP_OET_LOW_WARNING;
+
+ flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
+ desc->oed_info.function_flags = cpu_to_be32(flags);
+ desc->length = cpu_to_be32(sizeof(desc->oed_info));
+ return sizeof(struct fc_rdp_oed_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
+ uint8_t *page_a0, struct lpfc_vport *vport)
+{
+ desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
+ memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
+ memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
+ memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
+ memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
+ memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
+ desc->length = cpu_to_be32(sizeof(desc->opd_info));
+ return sizeof(struct fc_rdp_opd_sfp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
+{
+ if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
+ return 0;
+ desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
+
+ desc->info.CorrectedBlocks =
+ cpu_to_be32(stat->fecCorrBlkCount);
+ desc->info.UncorrectableBlocks =
+ cpu_to_be32(stat->fecUncorrBlkCount);
+
+ desc->length = cpu_to_be32(sizeof(desc->info));
+
+ return sizeof(struct fc_fec_rdp_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
+{
+ uint16_t rdp_cap = 0;
+ uint16_t rdp_speed;
+
+ desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
+
+ switch (phba->fc_linkspeed) {
+ case LPFC_LINK_SPEED_1GHZ:
+ rdp_speed = RDP_PS_1GB;
+ break;
+ case LPFC_LINK_SPEED_2GHZ:
+ rdp_speed = RDP_PS_2GB;
+ break;
+ case LPFC_LINK_SPEED_4GHZ:
+ rdp_speed = RDP_PS_4GB;
+ break;
+ case LPFC_LINK_SPEED_8GHZ:
+ rdp_speed = RDP_PS_8GB;
+ break;
+ case LPFC_LINK_SPEED_10GHZ:
+ rdp_speed = RDP_PS_10GB;
+ break;
+ case LPFC_LINK_SPEED_16GHZ:
+ rdp_speed = RDP_PS_16GB;
+ break;
+ case LPFC_LINK_SPEED_32GHZ:
+ rdp_speed = RDP_PS_32GB;
+ break;
+ case LPFC_LINK_SPEED_64GHZ:
+ rdp_speed = RDP_PS_64GB;
+ break;
+ case LPFC_LINK_SPEED_128GHZ:
+ rdp_speed = RDP_PS_128GB;
+ break;
+ case LPFC_LINK_SPEED_256GHZ:
+ rdp_speed = RDP_PS_256GB;
+ break;
+ default:
+ rdp_speed = RDP_PS_UNKNOWN;
+ break;
+ }
+
+ desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
+
+ if (phba->lmt & LMT_256Gb)
+ rdp_cap |= RDP_PS_256GB;
+ if (phba->lmt & LMT_128Gb)
+ rdp_cap |= RDP_PS_128GB;
+ if (phba->lmt & LMT_64Gb)
+ rdp_cap |= RDP_PS_64GB;
+ if (phba->lmt & LMT_32Gb)
+ rdp_cap |= RDP_PS_32GB;
+ if (phba->lmt & LMT_16Gb)
+ rdp_cap |= RDP_PS_16GB;
+ if (phba->lmt & LMT_10Gb)
+ rdp_cap |= RDP_PS_10GB;
+ if (phba->lmt & LMT_8Gb)
+ rdp_cap |= RDP_PS_8GB;
+ if (phba->lmt & LMT_4Gb)
+ rdp_cap |= RDP_PS_4GB;
+ if (phba->lmt & LMT_2Gb)
+ rdp_cap |= RDP_PS_2GB;
+ if (phba->lmt & LMT_1Gb)
+ rdp_cap |= RDP_PS_1GB;
+
+ if (rdp_cap == 0)
+ rdp_cap = RDP_CAP_UNKNOWN;
+ if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
+ rdp_cap |= RDP_CAP_USER_CONFIGURED;
+
+ desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
+ desc->length = cpu_to_be32(sizeof(desc->info));
+ return sizeof(struct fc_rdp_port_speed_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
+ struct lpfc_vport *vport)
+{
+
+ desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
+
+ memcpy(desc->port_names.wwnn, &vport->fc_nodename,
+ sizeof(desc->port_names.wwnn));
+
+ memcpy(desc->port_names.wwpn, &vport->fc_portname,
+ sizeof(desc->port_names.wwpn));
+
+ desc->length = cpu_to_be32(sizeof(desc->port_names));
+ return sizeof(struct fc_rdp_port_name_desc);
+}
+
+static uint32_t
+lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
+ struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+{
+
+ desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
+ if (vport->fc_flag & FC_FABRIC) {
+ memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
+ sizeof(desc->port_names.wwnn));
+
+ memcpy(desc->port_names.wwpn, &vport->fabric_portname,
+ sizeof(desc->port_names.wwpn));
+ } else { /* Point to Point */
+ memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
+ sizeof(desc->port_names.wwnn));
+
+ memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
+ sizeof(desc->port_names.wwpn));
+ }
+
+ desc->length = cpu_to_be32(sizeof(desc->port_names));
+ return sizeof(struct fc_rdp_port_name_desc);
+}
+
+static void
+lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
+ int status)
+{
+ struct lpfc_nodelist *ndlp = rdp_context->ndlp;
+ struct lpfc_vport *vport = ndlp->vport;
+ struct lpfc_iocbq *elsiocb;
+ struct ulp_bde64 *bpl;
+ IOCB_t *icmd;
+ union lpfc_wqe128 *wqe;
+ uint8_t *pcmd;
+ struct ls_rjt *stat;
+ struct fc_rdp_res_frame *rdp_res;
+ uint32_t cmdsize, len;
+ uint16_t *flag_ptr;
+ int rc;
+ u32 ulp_context;
+
+ if (status != SUCCESS)
+ goto error;
+
+ /* This will change once we know the true size of the RDP payload */
+ cmdsize = sizeof(struct fc_rdp_res_frame);
+
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
+ lpfc_max_els_tries, rdp_context->ndlp,
+ rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
+ if (!elsiocb)
+ goto free_rdp_context;
+
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* ox-id of the frame */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ rdp_context->ox_id);
+ bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
+ rdp_context->rx_id);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = rdp_context->rx_id;
+ icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2171 Xmit RDP response tag x%x xri x%x, "
+ "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x",
+ elsiocb->iotag, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+ memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
+ *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
+
+ /* Update Alarm and Warning */
+ flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
+ phba->sfp_alarm |= *flag_ptr;
+ flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
+ phba->sfp_warning |= *flag_ptr;
+
+ /* For RDP payload */
+ len = 8;
+ len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
+ (len + pcmd), ELS_CMD_RDP);
+
+ len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
+ rdp_context->page_a0, rdp_context->page_a2);
+ len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
+ phba);
+ len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
+ (len + pcmd), &rdp_context->link_stat);
+ len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
+ (len + pcmd), vport);
+ len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
+ (len + pcmd), vport, ndlp);
+ len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
+ &rdp_context->link_stat);
+ len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
+ &rdp_context->link_stat, vport);
+ len += lpfc_rdp_res_oed_temp_desc(phba,
+ (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
+ rdp_context->page_a2);
+ len += lpfc_rdp_res_oed_voltage_desc(phba,
+ (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
+ rdp_context->page_a2);
+ len += lpfc_rdp_res_oed_txbias_desc(phba,
+ (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
+ rdp_context->page_a2);
+ len += lpfc_rdp_res_oed_txpower_desc(phba,
+ (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
+ rdp_context->page_a2);
+ len += lpfc_rdp_res_oed_rxpower_desc(phba,
+ (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
+ rdp_context->page_a2);
+ len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
+ rdp_context->page_a0, vport);
+
+ rdp_res->length = cpu_to_be32(len - 8);
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+
+ /* Now that we know the true size of the payload, update the BPL */
+ bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
+ bpl->tus.f.bdeSize = len;
+ bpl->tus.f.bdeFlags = 0;
+ bpl->tus.w = le32_to_cpu(bpl->tus.w);
+
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_rdp_context;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+
+ goto free_rdp_context;
+
+error:
+ cmdsize = 2 * sizeof(uint32_t);
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
+ ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
+ if (!elsiocb)
+ goto free_rdp_context;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* ox-id of the frame */
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ rdp_context->ox_id);
+ bf_set(wqe_ctxt_tag,
+ &wqe->xmit_els_rsp.wqe_com,
+ rdp_context->rx_id);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = rdp_context->rx_id;
+ icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
+ }
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+
+ *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
+ stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
+ stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+
+ phba->fc_stat.elsXmitLSRJT++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_rdp_context;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+
+free_rdp_context:
+ /* This reference put is for the original unsolicited RDP. If the
+ * prep failed, there is no reference to remove.
+ */
+ lpfc_nlp_put(ndlp);
+ kfree(rdp_context);
+}
+
+static int
+lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
+{
+ LPFC_MBOXQ_t *mbox = NULL;
+ int rc;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
+ "7105 failed to allocate mailbox memory");
+ return 1;
+ }
+
+ if (lpfc_sli4_dump_page_a0(phba, mbox))
+ goto rdp_fail;
+ mbox->vport = rdp_context->ndlp->vport;
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
+ mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ return 1;
+ }
+
+ return 0;
+
+rdp_fail:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 1;
+}
+
+int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
+ struct lpfc_rdp_context *rdp_context)
+{
+ LPFC_MBOXQ_t *mbox = NULL;
+ int rc;
+ struct lpfc_dmabuf *mp;
+ struct lpfc_dmabuf *mpsave;
+ void *virt;
+ MAILBOX_t *mb;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
+ "7205 failed to allocate mailbox memory");
+ return 1;
+ }
+
+ if (lpfc_sli4_dump_page_a0(phba, mbox))
+ goto sfp_fail;
+ mp = mbox->ctx_buf;
+ mpsave = mp;
+ virt = mp->virt;
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ mb = &mbox->u.mb;
+ mb->un.varDmp.cv = 1;
+ mb->un.varDmp.co = 1;
+ mb->un.varWords[2] = 0;
+ mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4;
+ mb->un.varWords[4] = 0;
+ mb->un.varWords[5] = 0;
+ mb->un.varWords[6] = 0;
+ mb->un.varWords[7] = 0;
+ mb->un.varWords[8] = 0;
+ mb->un.varWords[9] = 0;
+ mb->un.varWords[10] = 0;
+ mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
+ mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
+ mbox->mbox_offset_word = 5;
+ mbox->ctx_buf = virt;
+ } else {
+ bf_set(lpfc_mbx_memory_dump_type3_length,
+ &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE);
+ mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
+ mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
+ }
+ mbox->vport = phba->pport;
+ mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
+
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30);
+ if (rc == MBX_NOT_FINISHED) {
+ rc = 1;
+ goto error;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ mp = (struct lpfc_dmabuf *)(mbox->ctx_buf);
+ else
+ mp = mpsave;
+
+ if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
+ rc = 1;
+ goto error;
+ }
+
+ lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0,
+ DMP_SFF_PAGE_A0_SIZE);
+
+ memset(mbox, 0, sizeof(*mbox));
+ memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE);
+ INIT_LIST_HEAD(&mp->list);
+
+ /* save address for completion */
+ mbox->ctx_buf = mp;
+ mbox->vport = phba->pport;
+
+ bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY);
+ bf_set(lpfc_mbx_memory_dump_type3_type,
+ &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD);
+ bf_set(lpfc_mbx_memory_dump_type3_link,
+ &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port);
+ bf_set(lpfc_mbx_memory_dump_type3_page_no,
+ &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2);
+ if (phba->sli_rev < LPFC_SLI_REV4) {
+ mb = &mbox->u.mb;
+ mb->un.varDmp.cv = 1;
+ mb->un.varDmp.co = 1;
+ mb->un.varWords[2] = 0;
+ mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4;
+ mb->un.varWords[4] = 0;
+ mb->un.varWords[5] = 0;
+ mb->un.varWords[6] = 0;
+ mb->un.varWords[7] = 0;
+ mb->un.varWords[8] = 0;
+ mb->un.varWords[9] = 0;
+ mb->un.varWords[10] = 0;
+ mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
+ mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
+ mbox->mbox_offset_word = 5;
+ mbox->ctx_buf = virt;
+ } else {
+ bf_set(lpfc_mbx_memory_dump_type3_length,
+ &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE);
+ mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
+ mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
+ }
+
+ mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context;
+ rc = lpfc_sli_issue_mbox_wait(phba, mbox, 30);
+ if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
+ rc = 1;
+ goto error;
+ }
+ rc = 0;
+
+ lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2,
+ DMP_SFF_PAGE_A2_SIZE);
+
+error:
+ mbox->ctx_buf = mpsave;
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+
+ return rc;
+
+sfp_fail:
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 1;
+}
+
+/*
+ * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
+ * IOCB. First, the payload of the unsolicited RDP is checked.
+ * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
+ * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
+ * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
+ * gather all data and send RDP response.
+ *
+ * Return code
+ * 0 - Sent the acc response
+ * 1 - Sent the reject response.
+ */
+static int
+lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_dmabuf *pcmd;
+ uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
+ struct fc_rdp_req_frame *rdp_req;
+ struct lpfc_rdp_context *rdp_context;
+ union lpfc_wqe128 *cmd = NULL;
+ struct ls_rjt stat;
+
+ if (phba->sli_rev < LPFC_SLI_REV4 ||
+ bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
+ LPFC_SLI_INTF_IF_TYPE_2) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_expl = LSEXP_REQ_UNSUPPORTED;
+ goto error;
+ }
+
+ if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_expl = LSEXP_REQ_UNSUPPORTED;
+ goto error;
+ }
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2422 ELS RDP Request "
+ "dec len %d tag x%x port_id %d len %d\n",
+ be32_to_cpu(rdp_req->rdp_des_length),
+ be32_to_cpu(rdp_req->nport_id_desc.tag),
+ be32_to_cpu(rdp_req->nport_id_desc.nport_id),
+ be32_to_cpu(rdp_req->nport_id_desc.length));
+
+ if (sizeof(struct fc_rdp_nport_desc) !=
+ be32_to_cpu(rdp_req->rdp_des_length))
+ goto rjt_logerr;
+ if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
+ goto rjt_logerr;
+ if (RDP_NPORT_ID_SIZE !=
+ be32_to_cpu(rdp_req->nport_id_desc.length))
+ goto rjt_logerr;
+ rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
+ if (!rdp_context) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto error;
+ }
+
+ cmd = &cmdiocb->wqe;
+ rdp_context->ndlp = lpfc_nlp_get(ndlp);
+ if (!rdp_context->ndlp) {
+ kfree(rdp_context);
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto error;
+ }
+ rdp_context->ox_id = bf_get(wqe_rcvoxid,
+ &cmd->xmit_els_rsp.wqe_com);
+ rdp_context->rx_id = bf_get(wqe_ctxt_tag,
+ &cmd->xmit_els_rsp.wqe_com);
+ rdp_context->cmpl = lpfc_els_rdp_cmpl;
+ if (lpfc_get_rdp_info(phba, rdp_context)) {
+ lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
+ "2423 Unable to send mailbox");
+ kfree(rdp_context);
+ rjt_err = LSRJT_UNABLE_TPC;
+ lpfc_nlp_put(ndlp);
+ goto error;
+ }
+
+ return 0;
+
+rjt_logerr:
+ rjt_err = LSRJT_LOGICAL_ERR;
+
+error:
+ memset(&stat, 0, sizeof(stat));
+ stat.un.b.lsRjtRsnCode = rjt_err;
+ stat.un.b.lsRjtRsnCodeExp = rjt_expl;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return 1;
+}
+
+
+static void
+lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ MAILBOX_t *mb;
+ IOCB_t *icmd;
+ union lpfc_wqe128 *wqe;
+ uint8_t *pcmd;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_nodelist *ndlp;
+ struct ls_rjt *stat;
+ union lpfc_sli4_cfg_shdr *shdr;
+ struct lpfc_lcb_context *lcb_context;
+ struct fc_lcb_res_frame *lcb_res;
+ uint32_t cmdsize, shdr_status, shdr_add_status;
+ int rc;
+
+ mb = &pmb->u.mb;
+ lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp;
+ ndlp = lcb_context->ndlp;
+ pmb->ctx_ndlp = NULL;
+ pmb->ctx_buf = NULL;
+
+ shdr = (union lpfc_sli4_cfg_shdr *)
+ &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
+ shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
+ "0194 SET_BEACON_CONFIG mailbox "
+ "completed with status x%x add_status x%x,"
+ " mbx status x%x\n",
+ shdr_status, shdr_add_status, mb->mbxStatus);
+
+ if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
+ (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
+ (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ goto error;
+ }
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+ cmdsize = sizeof(struct fc_lcb_res_frame);
+ 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)
+ goto free_lcb_context;
+
+ lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
+
+ memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ lcb_context->ox_id);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = lcb_context->rx_id;
+ icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
+ }
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+ *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
+ lcb_res->lcb_sub_command = lcb_context->sub_command;
+ lcb_res->lcb_type = lcb_context->type;
+ lcb_res->capability = lcb_context->capability;
+ lcb_res->lcb_frequency = lcb_context->frequency;
+ lcb_res->lcb_duration = lcb_context->duration;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ phba->fc_stat.elsXmitACC++;
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto out;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+ out:
+ kfree(lcb_context);
+ return;
+
+error:
+ cmdsize = sizeof(struct fc_lcb_res_frame);
+ elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
+ lpfc_max_els_tries, ndlp,
+ ndlp->nlp_DID, ELS_CMD_LS_RJT);
+ lpfc_nlp_put(ndlp);
+ if (!elsiocb)
+ goto free_lcb_context;
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ lcb_context->ox_id);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = lcb_context->rx_id;
+ icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
+ }
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+
+ *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
+ stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
+ stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+
+ if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
+ stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
+
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ phba->fc_stat.elsXmitLSRJT++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto free_lcb_context;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+free_lcb_context:
+ kfree(lcb_context);
+}
+
+static int
+lpfc_sli4_set_beacon(struct lpfc_vport *vport,
+ struct lpfc_lcb_context *lcb_context,
+ uint32_t beacon_state)
+{
+ struct lpfc_hba *phba = vport->phba;
+ union lpfc_sli4_cfg_shdr *cfg_shdr;
+ LPFC_MBOXQ_t *mbox = NULL;
+ uint32_t len;
+ int rc;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return 1;
+
+ cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
+ len = sizeof(struct lpfc_mbx_set_beacon_config) -
+ sizeof(struct lpfc_sli4_cfg_mhdr);
+ lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+ LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
+ LPFC_SLI4_MBX_EMBED);
+ mbox->ctx_ndlp = (void *)lcb_context;
+ mbox->vport = phba->pport;
+ mbox->mbox_cmpl = lpfc_els_lcb_rsp;
+ bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
+ phba->sli4_hba.physical_port);
+ bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
+ beacon_state);
+ mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */
+
+ /*
+ * Check bv1s bit before issuing the mailbox
+ * if bv1s == 1, LCB V1 supported
+ * else, LCB V0 supported
+ */
+
+ if (phba->sli4_hba.pc_sli4_params.bv1s) {
+ /* COMMON_SET_BEACON_CONFIG_V1 */
+ cfg_shdr->request.word9 = BEACON_VERSION_V1;
+ lcb_context->capability |= LCB_CAPABILITY_DURATION;
+ bf_set(lpfc_mbx_set_beacon_port_type,
+ &mbox->u.mqe.un.beacon_config, 0);
+ bf_set(lpfc_mbx_set_beacon_duration_v1,
+ &mbox->u.mqe.un.beacon_config,
+ be16_to_cpu(lcb_context->duration));
+ } else {
+ /* COMMON_SET_BEACON_CONFIG_V0 */
+ if (be16_to_cpu(lcb_context->duration) != 0) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 1;
+ }
+ cfg_shdr->request.word9 = BEACON_VERSION_V0;
+ lcb_context->capability &= ~(LCB_CAPABILITY_DURATION);
+ bf_set(lpfc_mbx_set_beacon_state,
+ &mbox->u.mqe.un.beacon_config, beacon_state);
+ bf_set(lpfc_mbx_set_beacon_port_type,
+ &mbox->u.mqe.un.beacon_config, 1);
+ bf_set(lpfc_mbx_set_beacon_duration,
+ &mbox->u.mqe.un.beacon_config,
+ be16_to_cpu(lcb_context->duration));
+ }
+
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ return 1;
+ }
+
+ return 0;
+}
+
+
+/**
+ * lpfc_els_rcv_lcb - Process an unsolicited LCB
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
+ * First, the payload of the unsolicited LCB is checked.
+ * Then based on Subcommand beacon will either turn on or off.
+ *
+ * Return code
+ * 0 - Sent the acc response
+ * 1 - Sent the reject response.
+ **/
+static int
+lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_dmabuf *pcmd;
+ uint8_t *lp;
+ struct fc_lcb_request_frame *beacon;
+ struct lpfc_lcb_context *lcb_context;
+ u8 state, rjt_err = 0;
+ struct ls_rjt stat;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint8_t *)pcmd->virt;
+ beacon = (struct fc_lcb_request_frame *)pcmd->virt;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
+ "type x%x frequency %x duration x%x\n",
+ lp[0], lp[1], lp[2],
+ beacon->lcb_command,
+ beacon->lcb_sub_command,
+ beacon->lcb_type,
+ beacon->lcb_frequency,
+ be16_to_cpu(beacon->lcb_duration));
+
+ if (beacon->lcb_sub_command != LPFC_LCB_ON &&
+ beacon->lcb_sub_command != LPFC_LCB_OFF) {
+ rjt_err = LSRJT_CMD_UNSUPPORTED;
+ goto rjt;
+ }
+
+ if (phba->sli_rev < LPFC_SLI_REV4 ||
+ phba->hba_flag & HBA_FCOE_MODE ||
+ (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
+ LPFC_SLI_INTF_IF_TYPE_2)) {
+ rjt_err = LSRJT_CMD_UNSUPPORTED;
+ goto rjt;
+ }
+
+ lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
+ if (!lcb_context) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto rjt;
+ }
+
+ state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
+ lcb_context->sub_command = beacon->lcb_sub_command;
+ lcb_context->capability = 0;
+ lcb_context->type = beacon->lcb_type;
+ lcb_context->frequency = beacon->lcb_frequency;
+ lcb_context->duration = beacon->lcb_duration;
+ lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
+ lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
+ lcb_context->ndlp = lpfc_nlp_get(ndlp);
+ if (!lcb_context->ndlp) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto rjt_free;
+ }
+
+ if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
+ lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0193 failed to send mail box");
+ lpfc_nlp_put(ndlp);
+ rjt_err = LSRJT_UNABLE_TPC;
+ goto rjt_free;
+ }
+ return 0;
+
+rjt_free:
+ kfree(lcb_context);
+rjt:
+ memset(&stat, 0, sizeof(stat));
+ stat.un.b.lsRjtRsnCode = rjt_err;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return 1;
+}
+
+
+/**
+ * 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, *n;
+
+ /* Move all affected nodes by pending RSCNs to NPR state. */
+ list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
+ if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
+ !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
+ continue;
+
+ /* NVME Target mode does not do RSCN Recovery. */
+ if (vport->phba->nvmet_support)
+ continue;
+
+ /* If we are in the process of doing discovery on this
+ * NPort, let it continue on its own.
+ */
+ switch (ndlp->nlp_state) {
+ case NLP_STE_PLOGI_ISSUE:
+ case NLP_STE_ADISC_ISSUE:
+ case NLP_STE_REG_LOGIN_ISSUE:
+ case NLP_STE_PRLI_ISSUE:
+ case NLP_STE_LOGO_ISSUE:
+ continue;
+ }
+
+ lpfc_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 = cmdiocb->cmd_dmabuf;
+ 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_TRACE_EVENT,
+ "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_rscn_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;
+ uint32_t payload_len, length, nportid, *cmd;
+ int rscn_cnt;
+ int rscn_id = 0, hba_id = 0;
+ int i, tmo;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ 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]);
+
+ /* Check if RSCN is coming from a direct-connected remote NPort */
+ if (vport->fc_flag & FC_PT2PT) {
+ /* If so, just ACC it, no other action needed for now */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "2024 pt2pt RSCN %08x Data: x%x x%x\n",
+ *lp, vport->fc_flag, payload_len);
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+ /* Check to see if we need to NVME rescan this target
+ * remoteport.
+ */
+ if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
+ ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
+ lpfc_nvme_rescan_port(vport, ndlp);
+ return 0;
+ }
+
+ /* If we are about to begin discovery, just ACC the RSCN.
+ * Discovery processing will satisfy it.
+ */
+ if (vport->port_state <= LPFC_NS_QRY) {
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
+ "RCV RSCN ignore: did:x%x/ste:x%x flg:x%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);
+ /* Restart disctmo if its already running */
+ if (vport->fc_flag & FC_DISC_TMO) {
+ tmo = ((phba->fc_ratov * 3) + 3);
+ mod_timer(&vport->fc_disctmo,
+ jiffies +
+ msecs_to_jiffies(1000 * tmo));
+ }
+ 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->cmd_dmabuf 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;
+
+ /* Restart disctmo if its already running */
+ if (vport->fc_flag & FC_DISC_TMO) {
+ tmo = ((phba->fc_ratov * 3) + 3);
+ mod_timer(&vport->fc_disctmo,
+ jiffies + msecs_to_jiffies(1000 * tmo));
+ }
+ 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->cmd_dmabuf, the calling
+ * routine will not try to free it.
+ */
+ cmdiocb->cmd_dmabuf = NULL;
+ }
+ /* Deferred RSCN */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "0235 Deferred RSCN "
+ "Data: x%x x%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);
+ 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->cmd_dmabuf, the calling routine will
+ * not try to free it.
+ */
+ cmdiocb->cmd_dmabuf = NULL;
+ lpfc_set_disctmo(vport);
+ /* Send back ACC */
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+ /* send RECOVERY event for ALL nodes that match RSCN payload */
+ lpfc_rscn_recovery_check(vport);
+ return lpfc_els_handle_rscn(vport);
+}
+
+/**
+ * lpfc_els_handle_rscn - Handle rscn for a vport
+ * @vport: pointer to a host virtual N_Port data structure.
+ *
+ * This routine handles the Registration State Configuration Notification
+ * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
+ * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
+ * if the ndlp to NameServer exists, a Common Transport (CT) command to the
+ * NameServer shall be issued. If CT command to the NameServer fails to be
+ * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
+ * RSCN activities with the @vport.
+ *
+ * Return code
+ * 0 - Cleaned up rscn on the @vport
+ * 1 - Wait for plogi to name server before proceed
+ **/
+int
+lpfc_els_handle_rscn(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_hba *phba = vport->phba;
+
+ /* Ignore RSCN if the port is being torn down. */
+ if (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 x%x x%x\n",
+ vport->fc_flag, 0, vport->fc_rscn_id_cnt,
+ vport->port_state, vport->num_disc_nodes,
+ vport->gidft_inp);
+
+ /* To process RSCN, first compare RSCN data with NameServer */
+ vport->fc_ns_retry = 0;
+ vport->num_disc_nodes = 0;
+
+ ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
+ /* Good ndlp, issue CT Request to NameServer. Need to
+ * know how many gidfts were issued. If none, then just
+ * flush the RSCN. Otherwise, the outstanding requests
+ * need to complete.
+ */
+ if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
+ if (lpfc_issue_gidft(vport) > 0)
+ return 1;
+ } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
+ if (lpfc_issue_gidpt(vport) > 0)
+ return 1;
+ } else {
+ return 1;
+ }
+ } else {
+ /* Nameserver login in question. Revalidate. */
+ if (ndlp) {
+ ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ } else {
+ ndlp = lpfc_nlp_init(vport, NameServer_DID);
+ if (!ndlp) {
+ lpfc_els_flush_rscn(vport);
+ return 0;
+ }
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ }
+ ndlp->nlp_type |= NLP_FABRIC;
+ lpfc_issue_els_plogi(vport, NameServer_DID, 0);
+ /* Wait for NameServer login cmpl before we can
+ * continue
+ */
+ return 1;
+ }
+
+ lpfc_els_flush_rscn(vport);
+ return 0;
+}
+
+/**
+ * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
+ * unsolicited event. An unsolicited FLOGI can be received in a point-to-
+ * point topology. As an unsolicited FLOGI should not be received in a loop
+ * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
+ * lpfc_check_sparm() routine is invoked to check the parameters in the
+ * unsolicited FLOGI. If parameters validation failed, the routine
+ * lpfc_els_rsp_reject() shall be called with reject reason code set to
+ * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
+ * FLOGI shall be compared with the Port WWN of the @vport to determine who
+ * will initiate PLOGI. The higher lexicographical value party shall has
+ * higher priority (as the winning port) and will initiate PLOGI and
+ * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
+ * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
+ * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
+ *
+ * Return code
+ * 0 - Successfully processed the unsolicited flogi
+ * 1 - Failed to process the unsolicited flogi
+ **/
+static int
+lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
+ uint32_t *lp = (uint32_t *) pcmd->virt;
+ union lpfc_wqe128 *wqe = &cmdiocb->wqe;
+ struct serv_parm *sp;
+ LPFC_MBOXQ_t *mbox;
+ uint32_t cmd, did;
+ int rc;
+ uint32_t fc_flag = 0;
+ uint32_t port_state = 0;
+
+ /* Clear external loopback plug detected flag */
+ phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
+
+ 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 = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
+
+ /* An FLOGI ELS command <elsCmd> was received from DID <did> in
+ Loop Mode */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0113 An FLOGI ELS command x%x was "
+ "received from DID x%x in Loop Mode\n",
+ cmd, did);
+ return 1;
+ }
+
+ (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
+
+ /*
+ * If our portname is greater than the remote portname,
+ * then 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;
+ }
+
+ /* External loopback plug insertion detected */
+ phba->link_flag |= LS_EXTERNAL_LOOPBACK;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
+ "1119 External Loopback plug detected\n");
+
+ /* 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);
+
+ /* If we have the high WWPN we can assign our own
+ * myDID; otherwise, we have to WAIT for a PLOGI
+ * from the remote NPort to find out what it
+ * will be.
+ */
+ vport->fc_myDID = PT2PT_LocalID;
+ } else {
+ vport->fc_myDID = PT2PT_RemoteID;
+ }
+
+ /*
+ * The vport state should go to LPFC_FLOGI only
+ * AFTER we issue a FLOGI, not receive one.
+ */
+ spin_lock_irq(shost->host_lock);
+ fc_flag = vport->fc_flag;
+ port_state = vport->port_state;
+ vport->fc_flag |= FC_PT2PT;
+ vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
+
+ /* Acking an unsol FLOGI. Count 1 for link bounce
+ * work-around.
+ */
+ vport->rcv_flogi_cnt++;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3311 Rcv Flogi PS x%x new PS x%x "
+ "fc_flag x%x new fc_flag x%x\n",
+ port_state, vport->port_state,
+ fc_flag, vport->fc_flag);
+
+ /*
+ * We temporarily set fc_myDID to make it look like we are
+ * a Fabric. This is done just so we end up with the right
+ * did / sid on the FLOGI ACC rsp.
+ */
+ did = vport->fc_myDID;
+ vport->fc_myDID = Fabric_DID;
+
+ memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
+
+ /* Defer ACC response until AFTER we issue a FLOGI */
+ if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) {
+ phba->defer_flogi_acc_rx_id = bf_get(wqe_ctxt_tag,
+ &wqe->xmit_els_rsp.wqe_com);
+ phba->defer_flogi_acc_ox_id = bf_get(wqe_rcvoxid,
+ &wqe->xmit_els_rsp.wqe_com);
+
+ vport->fc_myDID = did;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3344 Deferring FLOGI ACC: rx_id: x%x,"
+ " ox_id: x%x, hba_flag x%x\n",
+ phba->defer_flogi_acc_rx_id,
+ phba->defer_flogi_acc_ox_id, phba->hba_flag);
+
+ phba->defer_flogi_acc_flag = true;
+
+ return 0;
+ }
+
+ /* Send back ACC */
+ lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
+
+ /* Now lets put fc_myDID back to what its supposed to be */
+ vport->fc_myDID = did;
+
+ return 0;
+}
+
+/**
+ * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes Request Node Identification Data (RNID) IOCB
+ * received as an ELS unsolicited event. Only when the RNID specified format
+ * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
+ * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
+ * Accept (ACC) the RNID ELS command. All the other RNID formats are
+ * rejected by invoking the lpfc_els_rsp_reject() routine.
+ *
+ * Return code
+ * 0 - Successfully processed rnid iocb (currently always return 0)
+ **/
+static int
+lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_dmabuf *pcmd;
+ uint32_t *lp;
+ RNID *rn;
+ struct ls_rjt stat;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint32_t *) pcmd->virt;
+
+ 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 *)cmdiocb->cmd_dmabuf->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 Link Status (RLS) unsolicited IOCB event. It
+ * collects the link statistics from the completion of the MBX_READ_LNK_STAT
+ * mailbox command, constructs the RLS response with the link statistics
+ * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
+ * response to the RLS.
+ *
+ * Note that the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the RLS Accept Response
+ * ELS IOCB command.
+ *
+ **/
+static void
+lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ int rc = 0;
+ MAILBOX_t *mb;
+ IOCB_t *icmd;
+ union lpfc_wqe128 *wqe;
+ struct RLS_RSP *rls_rsp;
+ uint8_t *pcmd;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_nodelist *ndlp;
+ uint16_t oxid;
+ uint16_t rxid;
+ uint32_t cmdsize;
+ u32 ulp_context;
+
+ mb = &pmb->u.mb;
+
+ ndlp = pmb->ctx_ndlp;
+ rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff);
+ oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff);
+ pmb->ctx_buf = NULL;
+ pmb->ctx_ndlp = NULL;
+
+ if (mb->mbxStatus) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return;
+ }
+
+ cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
+ 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) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return;
+ }
+
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* Xri / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = rxid;
+ icmd->unsli3.rcvsli3.ox_id = oxid;
+ }
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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);
+ mempool_free(pmb, phba->mbox_mem_pool);
+ /* 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, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+ 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 Link Status (RLS) IOCB received as an
+ * ELS unsolicited event. It first checks the remote port state. If the
+ * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
+ * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
+ * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
+ * for reading the HBA link statistics. It is for the callback function,
+ * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
+ * to actually sending out RPL Accept (ACC) response.
+ *
+ * Return codes
+ * 0 - Successfully processed rls iocb (currently always return 0)
+ **/
+static int
+lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ LPFC_MBOXQ_t *mbox;
+ struct ls_rjt stat;
+ u32 ctx = get_job_ulpcontext(phba, cmdiocb);
+ u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
+
+ if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
+ /* reject the unsolicited RLS request and done with it */
+ goto reject_out;
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
+ if (mbox) {
+ lpfc_read_lnk_stat(phba, mbox);
+ mbox->ctx_buf = (void *)((unsigned long)
+ (ox_id << 16 | ctx));
+ mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto node_err;
+ 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);
+node_err:
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the RTV Accept Response
+ * ELS IOCB command.
+ *
+ * Return codes
+ * 0 - Successfully processed rtv iocb (currently always return 0)
+ **/
+static int
+lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ int rc = 0;
+ IOCB_t *icmd;
+ union lpfc_wqe128 *wqe;
+ struct lpfc_hba *phba = vport->phba;
+ struct ls_rjt stat;
+ struct RTV_RSP *rtv_rsp;
+ uint8_t *pcmd;
+ struct lpfc_iocbq *elsiocb;
+ uint32_t cmdsize;
+ u32 ulp_context;
+
+ if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
+ /* reject the unsolicited RTV request and done with it */
+ goto reject_out;
+
+ 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 *)elsiocb->cmd_dmabuf->virt;
+ *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
+ pcmd += sizeof(uint32_t); /* Skip past command */
+
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ /* use the command's xri in the response */
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, cmdiocb));
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, cmdiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
+ icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
+ }
+
+ 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, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi,
+ rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 0;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ }
+ 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_issue_els_rrq - Process an unsolicited rrq iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @ndlp: pointer to a node-list data structure.
+ * @did: DID of the target.
+ * @rrq: Pointer to the rrq struct.
+ *
+ * Build a ELS RRQ command and send it to the target. If the issue_iocb is
+ * successful, the completion handler will clear the RRQ.
+ *
+ * Return codes
+ * 0 - Successfully sent rrq els iocb.
+ * 1 - Failed to send rrq els iocb.
+ **/
+static int
+lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ uint32_t did, struct lpfc_node_rrq *rrq)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct RRQ *els_rrq;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ int ret;
+
+ if (!ndlp)
+ return 1;
+
+ /* If ndlp is not NULL, we will bump the reference count on it */
+ cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
+ ELS_CMD_RRQ);
+ if (!elsiocb)
+ return 1;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
+
+ /* For RRQ request, remainder of payload is Exchange IDs */
+ *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
+ pcmd += sizeof(uint32_t);
+ els_rrq = (struct RRQ *) pcmd;
+
+ bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[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->cmd_cmpl = lpfc_cmpl_els_rrq;
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp)
+ goto io_err;
+
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (ret == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
+ goto io_err;
+ }
+ return 0;
+
+ io_err:
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+}
+
+/**
+ * lpfc_send_rrq - Sends ELS RRQ if needed.
+ * @phba: pointer to lpfc hba data structure.
+ * @rrq: pointer to the active rrq.
+ *
+ * This routine will call the lpfc_issue_els_rrq if the rrq is
+ * still active for the xri. If this function returns a failure then
+ * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
+ *
+ * Returns 0 Success.
+ * 1 Failure.
+ **/
+int
+lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
+{
+ struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
+ rrq->nlp_DID);
+ if (!ndlp)
+ return 1;
+
+ 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the RPL Accept Response
+ * ELS command.
+ *
+ * Return code
+ * 0 - Successfully issued ACC RPL ELS command
+ * 1 - Failed to issue ACC RPL ELS command
+ **/
+static int
+lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
+ struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ IOCB_t *icmd;
+ union lpfc_wqe128 *wqe;
+ RPL_RSP rpl_rsp;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ u32 ulp_context;
+
+ elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_ACC);
+
+ if (!elsiocb)
+ return 1;
+
+ ulp_context = get_job_ulpcontext(phba, elsiocb);
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ /* Xri / rx_id */
+ bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
+ get_job_ulpcontext(phba, oldiocb));
+ bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
+ get_job_rcvoxid(phba, oldiocb));
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
+ icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
+ }
+
+ pcmd = elsiocb->cmd_dmabuf->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, ulp_context,
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
+ phba->fc_stat.elsXmitACC++;
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ 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 = cmdiocb->cmd_dmabuf;
+ 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;
+ FARP *fp;
+ uint32_t cnt, did;
+
+ did = get_job_els_rsp64_did(vport->phba, cmdiocb);
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint32_t *) pcmd->virt;
+
+ lp++;
+ fp = (FARP *) lp;
+ /* FARP-REQ received from DID <did> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0601 FARP-REQ received from DID x%x\n", did);
+ /* We will only support match on WWPN or WWNN */
+ if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
+ return 0;
+ }
+
+ cnt = 0;
+ /* If this FARP command is searching for my portname */
+ if (fp->Mflags & FARP_MATCH_PORT) {
+ if (memcmp(&fp->RportName, &vport->fc_portname,
+ sizeof(struct lpfc_name)) == 0)
+ cnt = 1;
+ }
+
+ /* If this FARP command is searching for my nodename */
+ if (fp->Mflags & FARP_MATCH_NODE) {
+ if (memcmp(&fp->RnodeName, &vport->fc_nodename,
+ sizeof(struct lpfc_name)) == 0)
+ cnt = 1;
+ }
+
+ if (cnt) {
+ if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
+ (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
+ /* Log back into the node before sending the FARP. */
+ if (fp->Rflags & FARP_REQUEST_PLOGI) {
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, ndlp,
+ NLP_STE_PLOGI_ISSUE);
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ }
+
+ /* Send a FARP response to that node */
+ if (fp->Rflags & FARP_REQUEST_FARPR)
+ lpfc_issue_els_farpr(vport, did, 0);
+ }
+ }
+ return 0;
+}
+
+/**
+ * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes Fibre Channel Address Resolution Protocol
+ * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
+ * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
+ * the FARP response request.
+ *
+ * Return code
+ * 0 - Successfully processed FARPR IOCB (currently always return 0)
+ **/
+static int
+lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ uint32_t did;
+
+ did = get_job_els_rsp64_did(vport->phba, cmdiocb);
+
+ /* FARP-RSP received from DID <did> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0600 FARP-RSP received from DID x%x\n", did);
+ /* ACCEPT the Farp resp request */
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+ return 0;
+}
+
+/**
+ * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @fan_ndlp: pointer to a node-list data structure.
+ *
+ * This routine processes a Fabric Address Notification (FAN) IOCB
+ * command received as an ELS unsolicited event. The FAN ELS command will
+ * only be processed on a physical port (i.e., the @vport represents the
+ * physical port). The fabric NodeName and PortName from the FAN IOCB are
+ * compared against those in the phba data structure. If any of those is
+ * different, the lpfc_initial_flogi() routine is invoked to initialize
+ * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
+ * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
+ * is invoked to register login to the fabric.
+ *
+ * Return code
+ * 0 - Successfully processed fan iocb (currently always return 0).
+ **/
+static int
+lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *fan_ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ uint32_t *lp;
+ FAN *fp;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
+ lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
+ fp = (FAN *) ++lp;
+ /* FAN received; Fan does not have a reply sequence */
+ if ((vport == phba->pport) &&
+ (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
+ if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
+ sizeof(struct lpfc_name))) ||
+ (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
+ sizeof(struct lpfc_name)))) {
+ /* This port has switched fabrics. FLOGI is required */
+ lpfc_issue_init_vfi(vport);
+ } else {
+ /* FAN verified - skip FLOGI */
+ vport->fc_myDID = vport->fc_prevDID;
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ lpfc_issue_fabric_reglogin(vport);
+ else {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3138 Need register VFI: (x%x/%x)\n",
+ vport->fc_prevDID, vport->fc_myDID);
+ lpfc_issue_reg_vfi(vport);
+ }
+ }
+ }
+ return 0;
+}
+
+/**
+ * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @cmdiocb: pointer to lpfc command iocb data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * Return code
+ * 0 - Successfully processed echo iocb (currently always return 0)
+ **/
+static int
+lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_nodelist *ndlp)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct fc_els_edc *edc_req;
+ struct fc_tlv_desc *tlv;
+ uint8_t *payload;
+ uint32_t *ptr, dtag;
+ const char *dtag_nm;
+ int desc_cnt = 0, bytes_remain;
+ struct fc_diag_lnkflt_desc *plnkflt;
+
+ payload = cmdiocb->cmd_dmabuf->virt;
+
+ edc_req = (struct fc_els_edc *)payload;
+ bytes_remain = be32_to_cpu(edc_req->desc_len);
+
+ ptr = (uint32_t *)payload;
+ lpfc_printf_vlog(vport, KERN_INFO,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
+ bytes_remain, be32_to_cpu(*ptr),
+ be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
+
+ /* No signal support unless there is a congestion descriptor */
+ phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
+ phba->cgn_sig_freq = 0;
+ phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
+
+ if (bytes_remain <= 0)
+ goto out;
+
+ tlv = edc_req->desc;
+
+ /*
+ * cycle through EDC diagnostic descriptors to find the
+ * congestion signaling capability descriptor
+ */
+ while (bytes_remain) {
+ if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "6464 Truncated TLV hdr on "
+ "Diagnostic descriptor[%d]\n",
+ desc_cnt);
+ goto out;
+ }
+
+ dtag = be32_to_cpu(tlv->desc_tag);
+ switch (dtag) {
+ case ELS_DTAG_LNK_FAULT_CAP:
+ if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
+ sizeof(struct fc_diag_lnkflt_desc)) {
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "6465 Truncated Link Fault Diagnostic "
+ "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
+ desc_cnt, bytes_remain,
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
+ sizeof(struct fc_diag_lnkflt_desc));
+ goto out;
+ }
+ plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_ELS | LOG_LDS_EVENT,
+ "4626 Link Fault Desc Data: x%08x len x%x "
+ "da x%x dd x%x interval x%x\n",
+ be32_to_cpu(plnkflt->desc_tag),
+ be32_to_cpu(plnkflt->desc_len),
+ be32_to_cpu(
+ plnkflt->degrade_activate_threshold),
+ be32_to_cpu(
+ plnkflt->degrade_deactivate_threshold),
+ be32_to_cpu(plnkflt->fec_degrade_interval));
+ break;
+ case ELS_DTAG_CG_SIGNAL_CAP:
+ if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
+ sizeof(struct fc_diag_cg_sig_desc)) {
+ lpfc_printf_log(
+ phba, KERN_WARNING, LOG_CGN_MGMT,
+ "6466 Truncated cgn signal Diagnostic "
+ "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
+ desc_cnt, bytes_remain,
+ FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
+ sizeof(struct fc_diag_cg_sig_desc));
+ goto out;
+ }
+
+ phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
+ phba->cgn_reg_signal = phba->cgn_init_reg_signal;
+
+ /* We start negotiation with lpfc_fabric_cgn_frequency.
+ * When we process the EDC, we will settle on the
+ * higher frequency.
+ */
+ phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
+
+ lpfc_least_capable_settings(
+ phba, (struct fc_diag_cg_sig_desc *)tlv);
+ break;
+ default:
+ dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
+ lpfc_printf_log(phba, KERN_WARNING,
+ LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
+ "6467 unknown Diagnostic "
+ "Descriptor[%d]: tag x%x (%s)\n",
+ desc_cnt, dtag, dtag_nm);
+ }
+ bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
+ tlv = fc_tlv_next_desc(tlv);
+ desc_cnt++;
+ }
+out:
+ /* Need to send back an ACC */
+ lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
+
+ lpfc_config_cgn_signal(phba);
+ return 0;
+}
+
+/**
+ * lpfc_els_timeout - Handler funciton to the els timer
+ * @t: timer context used to obtain the vport.
+ *
+ * This routine is invoked by the ELS timer after timeout. It posts the ELS
+ * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
+ * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
+ * up the worker thread. It is for the worker thread to invoke the routine
+ * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
+ **/
+void
+lpfc_els_timeout(struct timer_list *t)
+{
+ struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
+ 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->load_flag & FC_UNLOADING)))
+ vport->work_port_events |= WORKER_ELS_TMO;
+ spin_unlock_irqrestore(&vport->work_port_lock, iflag);
+
+ if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING)))
+ lpfc_worker_wake_up(phba);
+ return;
+}
+
+
+/**
+ * lpfc_els_timeout_handler - Process an els timeout event
+ * @vport: pointer to a virtual N_Port data structure.
+ *
+ * This routine is the actual handler function that processes an ELS timeout
+ * event. It walks the ELS ring to get and abort all the IOCBs (except the
+ * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
+ * invoking the lpfc_sli_issue_abort_iotag() routine.
+ **/
+void
+lpfc_els_timeout_handler(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *tmp_iocb, *piocb;
+ IOCB_t *cmd = NULL;
+ struct lpfc_dmabuf *pcmd;
+ uint32_t els_command = 0;
+ uint32_t timeout;
+ uint32_t remote_ID = 0xffffffff;
+ LIST_HEAD(abort_list);
+ u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
+
+
+ timeout = (uint32_t)(phba->fc_ratov << 1);
+
+ pring = lpfc_phba_elsring(phba);
+ if (unlikely(!pring))
+ return;
+
+ if (phba->pport->load_flag & FC_UNLOADING)
+ return;
+
+ spin_lock_irq(&phba->hbalock);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock(&pring->ring_lock);
+
+ list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
+ ulp_command = get_job_cmnd(phba, piocb);
+ ulp_context = get_job_ulpcontext(phba, piocb);
+ did = get_job_els_rsp64_did(phba, piocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ iotag = get_wqe_reqtag(piocb);
+ } else {
+ cmd = &piocb->iocb;
+ iotag = cmd->ulpIoTag;
+ }
+
+ if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
+ ulp_command == CMD_ABORT_XRI_CX ||
+ ulp_command == CMD_ABORT_XRI_CN ||
+ ulp_command == CMD_CLOSE_XRI_CN)
+ continue;
+
+ if (piocb->vport != vport)
+ continue;
+
+ pcmd = piocb->cmd_dmabuf;
+ 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 (ulp_command != CMD_GEN_REQUEST64_CR) {
+ remote_ID = did;
+ } else {
+ struct lpfc_nodelist *ndlp;
+ ndlp = __lpfc_findnode_rpi(vport, ulp_context);
+ if (ndlp)
+ remote_ID = ndlp->nlp_DID;
+ }
+ list_add_tail(&piocb->dlist, &abort_list);
+ }
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring->ring_lock);
+ spin_unlock_irq(&phba->hbalock);
+
+ list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0127 ELS timeout Data: x%x x%x x%x "
+ "x%x\n", els_command,
+ remote_ID, ulp_command, iotag);
+
+ spin_lock_irq(&phba->hbalock);
+ list_del_init(&piocb->dlist);
+ lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
+ spin_unlock_irq(&phba->hbalock);
+ }
+
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+
+ if (!list_empty(&pring->txcmplq))
+ if (!(phba->pport->load_flag & FC_UNLOADING))
+ mod_timer(&vport->els_tmofunc,
+ jiffies + msecs_to_jiffies(1000 * timeout));
+}
+
+/**
+ * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
+ * @vport: pointer to a host virtual N_Port data structure.
+ *
+ * This routine is used to clean up all the outstanding ELS commands on a
+ * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
+ * routine. After that, it walks the ELS transmit queue to remove all the
+ * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
+ * the IOCBs with a non-NULL completion callback function, the callback
+ * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
+ * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
+ * callback function, the IOCB will simply be released. Finally, it walks
+ * the ELS transmit completion queue to issue an abort IOCB to any transmit
+ * completion queue IOCB that is associated with the @vport and is not
+ * an IOCB from libdfc (i.e., the management plane IOCBs that are not
+ * part of the discovery state machine) out to HBA by invoking the
+ * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
+ * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
+ * the IOCBs are aborted when this function returns.
+ **/
+void
+lpfc_els_flush_cmd(struct lpfc_vport *vport)
+{
+ LIST_HEAD(abort_list);
+ LIST_HEAD(cancel_list);
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *tmp_iocb, *piocb;
+ u32 ulp_command;
+ unsigned long iflags = 0;
+ bool mbx_tmo_err;
+
+ lpfc_fabric_abort_vport(vport);
+
+ /*
+ * For SLI3, only the hbalock is required. But SLI4 needs to coordinate
+ * with the ring insert operation. Because lpfc_sli_issue_abort_iotag
+ * ultimately grabs the ring_lock, the driver must splice the list into
+ * a working list and release the locks before calling the abort.
+ */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ pring = lpfc_phba_elsring(phba);
+
+ /* Bail out if we've no ELS wq, like in PCI error recovery case. */
+ if (unlikely(!pring)) {
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ return;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock(&pring->ring_lock);
+
+ mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags);
+ /* First we need to issue aborts to outstanding cmds on txcmpl */
+ list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
+ if (piocb->cmd_flag & LPFC_IO_LIBDFC && !mbx_tmo_err)
+ continue;
+
+ if (piocb->vport != vport)
+ continue;
+
+ if (piocb->cmd_flag & LPFC_DRIVER_ABORTED && !mbx_tmo_err)
+ continue;
+
+ /* On the ELS ring we can have ELS_REQUESTs or
+ * GEN_REQUESTs waiting for a response.
+ */
+ ulp_command = get_job_cmnd(phba, piocb);
+ if (ulp_command == CMD_ELS_REQUEST64_CR) {
+ list_add_tail(&piocb->dlist, &abort_list);
+
+ /* If the link is down when flushing ELS commands
+ * the firmware will not complete them till after
+ * the link comes back up. This may confuse
+ * discovery for the new link up, so we need to
+ * change the compl routine to just clean up the iocb
+ * and avoid any retry logic.
+ */
+ if (phba->link_state == LPFC_LINK_DOWN)
+ piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
+ } else if (ulp_command == CMD_GEN_REQUEST64_CR ||
+ mbx_tmo_err)
+ list_add_tail(&piocb->dlist, &abort_list);
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring->ring_lock);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
+ list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ list_del_init(&piocb->dlist);
+ if (mbx_tmo_err)
+ list_move_tail(&piocb->list, &cancel_list);
+ else
+ lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
+
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ }
+ if (!list_empty(&cancel_list))
+ lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
+ IOERR_SLI_ABORTED);
+ else
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+
+ if (!list_empty(&abort_list))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "3387 abort list for txq not empty\n");
+ INIT_LIST_HEAD(&abort_list);
+
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock(&pring->ring_lock);
+
+ /* No need to abort the txq list,
+ * just queue them up for lpfc_sli_cancel_iocbs
+ */
+ list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
+ ulp_command = get_job_cmnd(phba, piocb);
+
+ if (piocb->cmd_flag & LPFC_IO_LIBDFC)
+ continue;
+
+ /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
+ if (ulp_command == CMD_QUE_RING_BUF_CN ||
+ ulp_command == CMD_QUE_RING_BUF64_CN ||
+ ulp_command == CMD_CLOSE_XRI_CN ||
+ ulp_command == CMD_ABORT_XRI_CN ||
+ ulp_command == CMD_ABORT_XRI_CX)
+ continue;
+
+ if (piocb->vport != vport)
+ continue;
+
+ list_del_init(&piocb->list);
+ list_add_tail(&piocb->list, &abort_list);
+ }
+
+ /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
+ if (vport == phba->pport) {
+ list_for_each_entry_safe(piocb, tmp_iocb,
+ &phba->fabric_iocb_list, list) {
+ list_del_init(&piocb->list);
+ list_add_tail(&piocb->list, &abort_list);
+ }
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring->ring_lock);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &abort_list,
+ IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
+
+ return;
+}
+
+/**
+ * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is used to clean up all the outstanding ELS commands on a
+ * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
+ * routine. After that, it walks the ELS transmit queue to remove all the
+ * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
+ * the IOCBs with the completion callback function associated, the callback
+ * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
+ * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
+ * callback function associated, the IOCB will simply be released. Finally,
+ * it walks the ELS transmit completion queue to issue an abort IOCB to any
+ * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
+ * management plane IOCBs that are not part of the discovery state machine)
+ * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
+ **/
+void
+lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
+{
+ struct lpfc_vport *vport;
+
+ spin_lock_irq(&phba->port_list_lock);
+ list_for_each_entry(vport, &phba->port_list, listentry)
+ lpfc_els_flush_cmd(vport);
+ spin_unlock_irq(&phba->port_list_lock);
+
+ 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;
+ u32 ulp_status, ulp_word4;
+
+ ndlp = cmdiocbp->ndlp;
+ if (!ndlp)
+ return;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocbp);
+ ulp_word4 = get_job_word4(phba, rspiocbp);
+
+ if (ulp_status == 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 *)cmdiocbp->cmd_dmabuf->virt;
+ lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
+ stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
+ 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 (ulp_status == IOSTAT_NPORT_BSY ||
+ ulp_status == IOSTAT_FABRIC_BSY) {
+ fabric_event.event_type = FC_REG_FABRIC_EVENT;
+ if (ulp_status == 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.
+ * @payload: ELS command code type.
+ *
+ * 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_TRACE_EVENT,
+ "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_TRACE_EVENT,
+ "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;
+}
+
+
+DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
+ FC_FPIN_LI_EVT_TYPES_INIT);
+
+DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
+ FC_FPIN_DELI_EVT_TYPES_INIT);
+
+DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
+ FC_FPIN_CONGN_EVT_TYPES_INIT);
+
+DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
+ fc_fpin_congn_severity_types,
+ FC_FPIN_CONGN_SEVERITY_INIT);
+
+
+/**
+ * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
+ * @phba: Pointer to phba object.
+ * @wwnlist: Pointer to list of WWPNs in FPIN payload
+ * @cnt: count of WWPNs in FPIN payload
+ *
+ * This routine is called by LI and PC descriptors.
+ * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
+ */
+static void
+lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
+{
+ char buf[LPFC_FPIN_WWPN_LINE_SZ];
+ __be64 wwn;
+ u64 wwpn;
+ int i, len;
+ int line = 0;
+ int wcnt = 0;
+ bool endit = false;
+
+ len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
+ for (i = 0; i < cnt; i++) {
+ /* Are we on the last WWPN */
+ if (i == (cnt - 1))
+ endit = true;
+
+ /* Extract the next WWPN from the payload */
+ wwn = *wwnlist++;
+ wwpn = be64_to_cpu(wwn);
+ len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
+ " %016llx", wwpn);
+
+ /* Log a message if we are on the last WWPN
+ * or if we hit the max allowed per message.
+ */
+ wcnt++;
+ if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
+ buf[len] = 0;
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "4686 %s\n", buf);
+
+ /* Check if we reached the last WWPN */
+ if (endit)
+ return;
+
+ /* Limit the number of log message displayed per FPIN */
+ line++;
+ if (line == LPFC_FPIN_WWPN_NUM_LINE) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "4687 %d WWPNs Truncated\n",
+ cnt - i - 1);
+ return;
+ }
+
+ /* Start over with next log message */
+ wcnt = 0;
+ len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
+ "Additional WWPNs:");
+ }
+ }
+}
+
+/**
+ * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
+ * @phba: Pointer to phba object.
+ * @tlv: Pointer to the Link Integrity Notification Descriptor.
+ *
+ * This function processes a Link Integrity FPIN event by logging a message.
+ **/
+static void
+lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
+ const char *li_evt_str;
+ u32 li_evt, cnt;
+
+ li_evt = be16_to_cpu(li->event_type);
+ li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
+ cnt = be32_to_cpu(li->pname_count);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "4680 FPIN Link Integrity %s (x%x) "
+ "Detecting PN x%016llx Attached PN x%016llx "
+ "Duration %d mSecs Count %d Port Cnt %d\n",
+ li_evt_str, li_evt,
+ be64_to_cpu(li->detecting_wwpn),
+ be64_to_cpu(li->attached_wwpn),
+ be32_to_cpu(li->event_threshold),
+ be32_to_cpu(li->event_count), cnt);
+
+ lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
+}
+
+/**
+ * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
+ * @phba: Pointer to hba object.
+ * @tlv: Pointer to the Delivery Notification Descriptor TLV
+ *
+ * This function processes a Delivery FPIN event by logging a message.
+ **/
+static void
+lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
+ const char *del_rsn_str;
+ u32 del_rsn;
+ __be32 *frame;
+
+ del_rsn = be16_to_cpu(del->deli_reason_code);
+ del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
+
+ /* Skip over desc_tag/desc_len header to payload */
+ frame = (__be32 *)(del + 1);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+ "4681 FPIN Delivery %s (x%x) "
+ "Detecting PN x%016llx Attached PN x%016llx "
+ "DiscHdr0 x%08x "
+ "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
+ "DiscHdr4 x%08x DiscHdr5 x%08x\n",
+ del_rsn_str, del_rsn,
+ be64_to_cpu(del->detecting_wwpn),
+ be64_to_cpu(del->attached_wwpn),
+ be32_to_cpu(frame[0]),
+ be32_to_cpu(frame[1]),
+ be32_to_cpu(frame[2]),
+ be32_to_cpu(frame[3]),
+ be32_to_cpu(frame[4]),
+ be32_to_cpu(frame[5]));
+}
+
+/**
+ * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
+ * @phba: Pointer to hba object.
+ * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV
+ *
+ * This function processes a Peer Congestion FPIN event by logging a message.
+ **/
+static void
+lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
+ const char *pc_evt_str;
+ u32 pc_evt, cnt;
+
+ pc_evt = be16_to_cpu(pc->event_type);
+ pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
+ cnt = be32_to_cpu(pc->pname_count);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
+ "4684 FPIN Peer Congestion %s (x%x) "
+ "Duration %d mSecs "
+ "Detecting PN x%016llx Attached PN x%016llx "
+ "Impacted Port Cnt %d\n",
+ pc_evt_str, pc_evt,
+ be32_to_cpu(pc->event_period),
+ be64_to_cpu(pc->detecting_wwpn),
+ be64_to_cpu(pc->attached_wwpn),
+ cnt);
+
+ lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
+}
+
+/**
+ * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
+ * @phba: Pointer to hba object.
+ * @tlv: Pointer to the Congestion Notification Descriptor TLV
+ *
+ * This function processes an FPIN Congestion Notifiction. The notification
+ * could be an Alarm or Warning. This routine feeds that data into driver's
+ * running congestion algorithm. It also processes the FPIN by
+ * logging a message. It returns 1 to indicate deliver this message
+ * to the upper layer or 0 to indicate don't deliver it.
+ **/
+static int
+lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
+{
+ struct lpfc_cgn_info *cp;
+ struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
+ const char *cgn_evt_str;
+ u32 cgn_evt;
+ const char *cgn_sev_str;
+ u32 cgn_sev;
+ uint16_t value;
+ u32 crc;
+ bool nm_log = false;
+ int rc = 1;
+
+ cgn_evt = be16_to_cpu(cgn->event_type);
+ cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
+ cgn_sev = cgn->severity;
+ cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
+
+ /* The driver only takes action on a Credit Stall or Oversubscription
+ * event type to engage the IO algorithm. The driver prints an
+ * unmaskable message only for Lost Credit and Credit Stall.
+ * TODO: Still need to have definition of host action on clear,
+ * lost credit and device specific event types.
+ */
+ switch (cgn_evt) {
+ case FPIN_CONGN_LOST_CREDIT:
+ nm_log = true;
+ break;
+ case FPIN_CONGN_CREDIT_STALL:
+ nm_log = true;
+ fallthrough;
+ case FPIN_CONGN_OVERSUBSCRIPTION:
+ if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
+ nm_log = false;
+ switch (cgn_sev) {
+ case FPIN_CONGN_SEVERITY_ERROR:
+ /* Take action here for an Alarm event */
+ if (phba->cmf_active_mode != LPFC_CFG_OFF) {
+ if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
+ /* Track of alarm cnt for SYNC_WQE */
+ atomic_inc(&phba->cgn_sync_alarm_cnt);
+ }
+ /* Track alarm cnt for cgn_info regardless
+ * of whether CMF is configured for Signals
+ * or FPINs.
+ */
+ atomic_inc(&phba->cgn_fabric_alarm_cnt);
+ goto cleanup;
+ }
+ break;
+ case FPIN_CONGN_SEVERITY_WARNING:
+ /* Take action here for a Warning event */
+ if (phba->cmf_active_mode != LPFC_CFG_OFF) {
+ if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
+ /* Track of warning cnt for SYNC_WQE */
+ atomic_inc(&phba->cgn_sync_warn_cnt);
+ }
+ /* Track warning cnt and freq for cgn_info
+ * regardless of whether CMF is configured for
+ * Signals or FPINs.
+ */
+ atomic_inc(&phba->cgn_fabric_warn_cnt);
+cleanup:
+ /* Save frequency in ms */
+ phba->cgn_fpin_frequency =
+ be32_to_cpu(cgn->event_period);
+ value = phba->cgn_fpin_frequency;
+ if (phba->cgn_i) {
+ cp = (struct lpfc_cgn_info *)
+ phba->cgn_i->virt;
+ cp->cgn_alarm_freq =
+ cpu_to_le16(value);
+ cp->cgn_warn_freq =
+ cpu_to_le16(value);
+ crc = lpfc_cgn_calc_crc32
+ (cp,
+ LPFC_CGN_INFO_SZ,
+ LPFC_CGN_CRC32_SEED);
+ cp->cgn_info_crc = cpu_to_le32(crc);
+ }
+
+ /* Don't deliver to upper layer since
+ * driver took action on this tlv.
+ */
+ rc = 0;
+ }
+ break;
+ }
+ break;
+ }
+
+ /* Change the log level to unmaskable for the following event types. */
+ lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
+ LOG_CGN_MGMT | LOG_ELS,
+ "4683 FPIN CONGESTION %s type %s (x%x) Event "
+ "Duration %d mSecs\n",
+ cgn_sev_str, cgn_evt_str, cgn_evt,
+ be32_to_cpu(cgn->event_period));
+ return rc;
+}
+
+void
+lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
+ struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
+ const char *dtag_nm;
+ int desc_cnt = 0, bytes_remain, cnt;
+ u32 dtag, deliver = 0;
+ int len;
+
+ /* FPINs handled only if we are in the right discovery state */
+ if (vport->port_state < LPFC_DISC_AUTH)
+ return;
+
+ /* make sure there is the full fpin header */
+ if (fpin_length < sizeof(struct fc_els_fpin))
+ return;
+
+ /* Sanity check descriptor length. The desc_len value does not
+ * include space for the ELS command and the desc_len fields.
+ */
+ len = be32_to_cpu(fpin->desc_len);
+ if (fpin_length < len + sizeof(struct fc_els_fpin)) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "4671 Bad ELS FPIN length %d: %d\n",
+ len, fpin_length);
+ return;
+ }
+
+ tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
+ first_tlv = tlv;
+ bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
+ bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
+
+ /* process each descriptor separately */
+ while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
+ bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
+ dtag = be32_to_cpu(tlv->desc_tag);
+ switch (dtag) {
+ case ELS_DTAG_LNK_INTEGRITY:
+ lpfc_els_rcv_fpin_li(phba, tlv);
+ deliver = 1;
+ break;
+ case ELS_DTAG_DELIVERY:
+ lpfc_els_rcv_fpin_del(phba, tlv);
+ deliver = 1;
+ break;
+ case ELS_DTAG_PEER_CONGEST:
+ lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
+ deliver = 1;
+ break;
+ case ELS_DTAG_CONGESTION:
+ deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
+ break;
+ default:
+ dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "4678 unknown FPIN descriptor[%d]: "
+ "tag x%x (%s)\n",
+ desc_cnt, dtag, dtag_nm);
+
+ /* If descriptor is bad, drop the rest of the data */
+ return;
+ }
+ lpfc_cgn_update_stat(phba, dtag);
+ cnt = be32_to_cpu(tlv->desc_len);
+
+ /* Sanity check descriptor length. The desc_len value does not
+ * include space for the desc_tag and the desc_len fields.
+ */
+ len -= (cnt + sizeof(struct fc_tlv_desc));
+ if (len < 0) {
+ dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
+ "4672 Bad FPIN descriptor TLV length "
+ "%d: %d %d %s\n",
+ cnt, len, fpin_length, dtag_nm);
+ return;
+ }
+
+ current_tlv = tlv;
+ bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
+ tlv = fc_tlv_next_desc(tlv);
+
+ /* Format payload such that the FPIN delivered to the
+ * upper layer is a single descriptor FPIN.
+ */
+ if (desc_cnt)
+ memcpy(first_tlv, current_tlv,
+ (cnt + sizeof(struct fc_els_fpin)));
+
+ /* Adjust the length so that it only reflects a
+ * single descriptor FPIN.
+ */
+ fpin_length = cnt + sizeof(struct fc_els_fpin);
+ fpin->desc_len = cpu_to_be32(fpin_length);
+ fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
+
+ /* Send every descriptor individually to the upper layer */
+ if (deliver)
+ fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
+ fpin_length, (char *)fpin, 0);
+ desc_cnt++;
+ }
+}
+
+/**
+ * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @elsiocb: pointer to lpfc els command iocb data structure.
+ *
+ * This routine is used for processing the IOCB associated with a unsolicited
+ * event. It first determines whether there is an existing ndlp that matches
+ * the DID from the unsolicited IOCB. If not, it will create a new one with
+ * the DID from the unsolicited IOCB. The ELS command from the unsolicited
+ * IOCB is then used to invoke the proper routine and to set up proper state
+ * of the discovery state machine.
+ **/
+static void
+lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
+{
+ struct lpfc_nodelist *ndlp;
+ struct ls_rjt stat;
+ u32 *payload, payload_len;
+ u32 cmd = 0, did = 0, newnode, status = 0;
+ uint8_t rjt_exp, rjt_err = 0, init_link = 0;
+ struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
+ LPFC_MBOXQ_t *mbox;
+
+ if (!vport || !elsiocb->cmd_dmabuf)
+ goto dropit;
+
+ newnode = 0;
+ wcqe_cmpl = &elsiocb->wcqe_cmpl;
+ payload = elsiocb->cmd_dmabuf->virt;
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ payload_len = wcqe_cmpl->total_data_placed;
+ else
+ payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
+ status = get_job_ulpstatus(phba, elsiocb);
+ cmd = *payload;
+ if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
+ lpfc_sli3_post_buffer(phba, pring, 1);
+
+ did = get_job_els_rsp64_did(phba, elsiocb);
+ if (status) {
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
+ "RCV Unsol ELS: status:x%x/x%x did:x%x",
+ status, get_job_word4(phba, elsiocb), 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 = lpfc_nlp_init(vport, did);
+ if (!ndlp)
+ goto dropit;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ newnode = 1;
+ if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
+ ndlp->nlp_type |= NLP_FABRIC;
+ } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ newnode = 1;
+ }
+
+ phba->fc_stat.elsRcvFrame++;
+
+ /*
+ * Do not process any unsolicited ELS commands
+ * if the ndlp is in DEV_LOSS
+ */
+ spin_lock_irq(&ndlp->lock);
+ if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) {
+ spin_unlock_irq(&ndlp->lock);
+ if (newnode)
+ lpfc_nlp_put(ndlp);
+ goto dropit;
+ }
+ spin_unlock_irq(&ndlp->lock);
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp)
+ goto dropit;
+ elsiocb->vport = vport;
+
+ if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
+ cmd &= ELS_CMD_MASK;
+ }
+ /* ELS command <elsCmd> received from NPORT <did> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0112 ELS command x%x received from NPORT x%x "
+ "refcnt %d Data: x%x x%x x%x x%x\n",
+ cmd, did, kref_read(&ndlp->kref), vport->port_state,
+ vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
+
+ /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
+ if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
+ (cmd != ELS_CMD_FLOGI) &&
+ !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) {
+ rjt_err = LSRJT_LOGICAL_BSY;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ goto lsrjt;
+ }
+
+ 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);
+ if (phba->sli_rev == LPFC_SLI_REV4 &&
+ (phba->pport->fc_flag & FC_PT2PT)) {
+ vport->fc_prevDID = vport->fc_myDID;
+ /* Our DID needs to be updated before registering
+ * the vfi. This is done in lpfc_rcv_plogi but
+ * that is called after the reg_vfi.
+ */
+ vport->fc_myDID =
+ bf_get(els_rsp64_sid,
+ &elsiocb->wqe.xmit_els_rsp);
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "3312 Remote port assigned DID x%x "
+ "%x\n", vport->fc_myDID,
+ vport->fc_prevDID);
+ }
+
+ lpfc_send_els_event(vport, ndlp, payload);
+
+ /* If Nport discovery is delayed, reject PLOGIs */
+ if (vport->fc_flag & FC_DISC_DELAYED) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ 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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ break;
+ }
+ }
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
+ spin_unlock_irq(&ndlp->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++;
+
+ /* If the driver believes fabric discovery is done and is ready,
+ * bounce the link. There is some descrepancy.
+ */
+ if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
+ vport->fc_flag & FC_PT2PT &&
+ vport->rcv_flogi_cnt >= 1) {
+ rjt_err = LSRJT_LOGICAL_BSY;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ init_link++;
+ goto lsrjt;
+ }
+
+ lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
+ /* retain node if our response is deferred */
+ if (phba->defer_flogi_acc_flag)
+ break;
+ if (newnode)
+ lpfc_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ break;
+ case ELS_CMD_LOGO:
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
+ "RCV LOGO: did:x%x/ste:x%x flg:x%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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ break;
+ }
+ lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
+ if (newnode)
+ lpfc_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ break;
+ }
+ lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
+ break;
+ case ELS_CMD_LCB:
+ phba->fc_stat.elsRcvLCB++;
+ lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
+ break;
+ case ELS_CMD_RDP:
+ phba->fc_stat.elsRcvRDP++;
+ lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
+ break;
+ case ELS_CMD_RSCN:
+ phba->fc_stat.elsRcvRSCN++;
+ lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
+ if (newnode)
+ lpfc_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ 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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ 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:
+ case ELS_CMD_NVMEPRLI:
+ 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) &&
+ (vport->fc_flag & FC_FABRIC)) {
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ 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_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ break;
+ case ELS_CMD_REC:
+ /* receive this due to exchange closed */
+ rjt_err = LSRJT_UNABLE_TPC;
+ rjt_exp = LSEXP_INVALID_OX_RX;
+ break;
+ case ELS_CMD_FPIN:
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
+ "RCV FPIN: did:x%x/ste:x%x flg:x%x",
+ did, vport->port_state, ndlp->nlp_flag);
+
+ lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
+ payload_len);
+
+ /* There are no replies, so no rjt codes */
+ break;
+ case ELS_CMD_EDC:
+ lpfc_els_rcv_edc(vport, elsiocb, ndlp);
+ break;
+ case ELS_CMD_RDF:
+ phba->fc_stat.elsRcvRDF++;
+ /* Accept RDF only from fabric controller */
+ if (did != Fabric_Cntl_DID) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
+ "1115 Received RDF from invalid DID "
+ "x%x\n", did);
+ rjt_err = LSRJT_PROTOCOL_ERR;
+ rjt_exp = LSEXP_NOTHING_MORE;
+ goto lsrjt;
+ }
+
+ lpfc_els_rcv_rdf(vport, elsiocb, 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;
+ rjt_exp = LSEXP_NOTHING_MORE;
+
+ /* Unknown ELS command <elsCmd> received from NPORT <did> */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0115 Unknown ELS command x%x "
+ "received from NPORT x%x\n", cmd, did);
+ if (newnode)
+ lpfc_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ break;
+ }
+
+lsrjt:
+ /* check if need to LS_RJT received ELS cmd */
+ if (rjt_err) {
+ memset(&stat, 0, sizeof(stat));
+ stat.un.b.lsRjtRsnCode = rjt_err;
+ stat.un.b.lsRjtRsnCodeExp = rjt_exp;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
+ NULL);
+ /* Remove the reference from above for new nodes. */
+ if (newnode)
+ lpfc_disc_state_machine(vport, ndlp, NULL,
+ NLP_EVT_DEVICE_RM);
+ }
+
+ /* Release the reference on this elsiocb, not the ndlp. */
+ lpfc_nlp_put(elsiocb->ndlp);
+ elsiocb->ndlp = NULL;
+
+ /* Special case. Driver received an unsolicited command that
+ * unsupportable given the driver's current state. Reset the
+ * link and start over.
+ */
+ if (init_link) {
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox)
+ return;
+ lpfc_linkdown(phba);
+ lpfc_init_link(phba, mbox,
+ phba->cfg_topology,
+ phba->cfg_link_speed);
+ mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->vport = vport;
+ if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
+ MBX_NOT_FINISHED)
+ mempool_free(mbox, phba->mbox_mem_pool);
+ }
+
+ return;
+
+dropit:
+ if (vport && !(vport->load_flag & FC_UNLOADING))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0111 Dropping received ELS cmd "
+ "Data: x%x x%x x%x x%x\n",
+ cmd, status, get_job_word4(phba, elsiocb), did);
+
+ phba->fc_stat.elsRcvDrop++;
+}
+
+/**
+ * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @elsiocb: pointer to lpfc els iocb data structure.
+ *
+ * This routine is used to process an unsolicited event received from a SLI
+ * (Service Level Interface) ring. The actual processing of the data buffer
+ * associated with the unsolicited event is done by invoking the routine
+ * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
+ * SLI ring on which the unsolicited event was received.
+ **/
+void
+lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *elsiocb)
+{
+ struct lpfc_vport *vport = elsiocb->vport;
+ u32 ulp_command, status, parameter, bde_count = 0;
+ IOCB_t *icmd;
+ struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
+ struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
+ struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
+ dma_addr_t paddr;
+
+ elsiocb->cmd_dmabuf = NULL;
+ elsiocb->rsp_dmabuf = NULL;
+ elsiocb->bpl_dmabuf = NULL;
+
+ wcqe_cmpl = &elsiocb->wcqe_cmpl;
+ ulp_command = get_job_cmnd(phba, elsiocb);
+ status = get_job_ulpstatus(phba, elsiocb);
+ parameter = get_job_word4(phba, elsiocb);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ bde_count = wcqe_cmpl->word3;
+ else
+ bde_count = elsiocb->iocb.ulpBdeCount;
+
+ if (status == IOSTAT_NEED_BUFFER) {
+ lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
+ } else if (status == IOSTAT_LOCAL_REJECT &&
+ (parameter & IOERR_PARAM_MASK) ==
+ 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_sli3_post_buffer(phba, pring, 0);
+ return;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV3) {
+ icmd = &elsiocb->iocb;
+ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
+ (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
+ ulp_command == 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 (bde_count == 0)
+ return;
+
+ /* Account for SLI2 or SLI3 and later unsolicited buffering */
+ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
+ elsiocb->cmd_dmabuf = bdeBuf1;
+ if (bde_count == 2)
+ elsiocb->bpl_dmabuf = bdeBuf2;
+ } else {
+ icmd = &elsiocb->iocb;
+ paddr = getPaddr(icmd->un.cont64[0].addrHigh,
+ icmd->un.cont64[0].addrLow);
+ elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
+ paddr);
+ if (bde_count == 2) {
+ paddr = getPaddr(icmd->un.cont64[1].addrHigh,
+ icmd->un.cont64[1].addrLow);
+ elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
+ pring,
+ paddr);
+ }
+ }
+
+ lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
+ /*
+ * The different unsolicited event handlers would tell us
+ * if they are done with "mp" by setting cmd_dmabuf to NULL.
+ */
+ if (elsiocb->cmd_dmabuf) {
+ lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
+ elsiocb->cmd_dmabuf = NULL;
+ }
+
+ if (elsiocb->bpl_dmabuf) {
+ lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
+ elsiocb->bpl_dmabuf = NULL;
+ }
+
+}
+
+static void
+lpfc_start_fdmi(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp;
+
+ /* If this is the first time, allocate an ndlp and initialize
+ * it. Otherwise, make sure the node is enabled and then do the
+ * login.
+ */
+ ndlp = lpfc_findnode_did(vport, FDMI_DID);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, FDMI_DID);
+ if (ndlp) {
+ ndlp->nlp_type |= NLP_FABRIC;
+ } else {
+ return;
+ }
+ }
+
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+}
+
+/**
+ * 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;
+ 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);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "3334 Delay fc port discovery for %d secs\n",
+ phba->fc_ratov);
+ mod_timer(&vport->delayed_disc_tmo,
+ jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
+ return;
+ }
+ spin_unlock_irq(shost->host_lock);
+
+ ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, NameServer_DID);
+ if (!ndlp) {
+ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
+ lpfc_disc_start(vport);
+ return;
+ }
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0251 NameServer login: no memory\n");
+ return;
+ }
+ }
+
+ 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_TRACE_EVENT,
+ "0252 Cannot issue NameServer login\n");
+ return;
+ }
+
+ if ((phba->cfg_enable_SmartSAN ||
+ (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) &&
+ (vport->load_flag & FC_ALLOW_FDMI))
+ lpfc_start_fdmi(vport);
+}
+
+/**
+ * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
+ * @phba: pointer to lpfc hba data structure.
+ * @pmb: pointer to the driver internal queue element for mailbox command.
+ *
+ * This routine is the completion callback function to register new vport
+ * mailbox command. If the new vport mailbox command completes successfully,
+ * the fabric registration login shall be performed on physical port (the
+ * new vport created is actually a physical port, with VPI 0) or the port
+ * login to Name Server for State Change Request (SCR) will be performed
+ * on virtual port (real virtual port, with VPI greater than 0).
+ **/
+static void
+lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
+{
+ struct lpfc_vport *vport = pmb->vport;
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+ struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
+ MAILBOX_t *mb = &pmb->u.mb;
+ int rc;
+
+ 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_TRACE_EVENT,
+ "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_TRACE_EVENT,
+ "2732 Failed to issue INIT_VPI"
+ " mailbox command\n");
+ } else {
+ lpfc_nlp_put(ndlp);
+ return;
+ }
+ fallthrough;
+ default:
+ /* Try to recover from this error */
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_sli4_unreg_all_rpis(vport);
+ lpfc_mbx_unreg_vpi(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(shost->host_lock);
+ if (mb->mbxStatus == MBX_NOT_FINISHED)
+ break;
+ if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
+ !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) {
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_issue_init_vfi(vport);
+ else
+ lpfc_initial_flogi(vport);
+ } else {
+ lpfc_initial_fdisc(vport);
+ }
+ break;
+ }
+ } else {
+ spin_lock_irq(shost->host_lock);
+ vport->vpi_state |= LPFC_VPI_REGISTERED;
+ spin_unlock_irq(shost->host_lock);
+ if (vport == phba->pport) {
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ lpfc_issue_fabric_reglogin(vport);
+ else {
+ /*
+ * If the physical port is instantiated using
+ * FDISC, do not start vport discovery.
+ */
+ if (vport->port_state != LPFC_FDISC)
+ lpfc_start_fdiscs(phba);
+ lpfc_do_scr_ns_plogi(phba, vport);
+ }
+ } else {
+ lpfc_do_scr_ns_plogi(phba, vport);
+ }
+ }
+mbox_err_exit:
+ /* Now, we decrement the ndlp reference count held for this
+ * callback function
+ */
+ lpfc_nlp_put(ndlp);
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+ 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->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ goto mbox_err_exit;
+ }
+
+ 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_TRACE_EVENT,
+ "0253 Register VPI: Can't send mbox\n");
+ goto mbox_err_exit;
+ }
+ } else {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "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;
+
+ /* 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;
+
+ mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->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)
+{
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (ulp_status != IOSTAT_FABRIC_RJT ||
+ ulp_word4 != 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 = cmdiocb->ndlp;
+ struct lpfc_nodelist *np;
+ struct lpfc_nodelist *next_np;
+ struct lpfc_iocbq *piocb;
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
+ struct serv_parm *sp;
+ uint8_t fabric_param_changed;
+ u32 ulp_status, ulp_word4;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
+ ulp_status, ulp_word4,
+ vport->fc_prevDID);
+ /* Since all FDISCs are being single threaded, we
+ * 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",
+ ulp_status, ulp_word4, vport->fc_prevDID);
+
+ if (ulp_status) {
+
+ 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_TRACE_EVENT,
+ "0126 FDISC failed. (x%x/x%x)\n",
+ ulp_status, ulp_word4);
+ goto fdisc_failed;
+ }
+
+ lpfc_check_nlp_post_devloss(vport, ndlp);
+
+ 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 = ulp_word4 & Mask_DID;
+ lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
+ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+ 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 ((np->nlp_state != NLP_STE_NPR_NODE) ||
+ !(np->nlp_flag & NLP_NPR_ADISC))
+ continue;
+ spin_lock_irq(&ndlp->lock);
+ np->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->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);
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ 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);
+
+ /* The FDISC completed successfully. Move the fabric ndlp to
+ * UNMAPPED state and register with the transport.
+ */
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ goto out;
+
+fdisc_failed:
+ if (vport->fc_vport &&
+ (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ /* Cancel discovery timer */
+ lpfc_can_disctmo(vport);
+out:
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * 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 the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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;
+ union lpfc_wqe128 *wqe = NULL;
+ 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_TRACE_EVENT,
+ "0255 Issue FDISC: no IOCB\n");
+ return 1;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ wqe = &elsiocb->wqe;
+ bf_set(els_req64_sid, &wqe->els_req, 0);
+ bf_set(els_req64_sp, &wqe->els_req, 1);
+ } else {
+ icmd = &elsiocb->iocb;
+ icmd->un.elsreq64.myID = 0;
+ icmd->un.elsreq64.fl = 1;
+ icmd->ulpCt_h = 1;
+ icmd->ulpCt_l = 0;
+ }
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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);
+ sp->cmn.valid_vendor_ver_level = 0;
+ memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
+ lpfc_set_disctmo(vport);
+
+ phba->fc_stat.elsXmitFDISC++;
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue FDISC: did:x%x",
+ did, 0, 0);
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp)
+ goto err_out;
+
+ rc = lpfc_issue_fabric_iocb(phba, elsiocb);
+ if (rc == IOCB_ERROR) {
+ lpfc_nlp_put(ndlp);
+ goto err_out;
+ }
+
+ lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
+ return 0;
+
+ err_out:
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0256 Issue FDISC: Cannot send IOCB\n");
+ return 1;
+}
+
+/**
+ * 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);
+ u32 ulp_status, ulp_word4, did, tmo;
+
+ ndlp = cmdiocb->ndlp;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+ ulp_word4 = get_job_word4(phba, rspiocb);
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+ tmo = get_wqe_tmo(cmdiocb);
+ } else {
+ irsp = &rspiocb->iocb;
+ did = get_job_els_rsp64_did(phba, rspiocb);
+ tmo = irsp->ulpTimeout;
+ }
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "LOGO npiv cmpl: status:x%x/x%x did:x%x",
+ ulp_status, ulp_word4, did);
+
+ /* 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 x%x x%x x%x\n",
+ ndlp->nlp_DID, ulp_status, ulp_word4,
+ tmo, vport->num_disc_nodes,
+ kref_read(&ndlp->kref), ndlp->nlp_flag,
+ ndlp->fc4_xpt_flags);
+
+ if (ulp_status == IOSTAT_SUCCESS) {
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag &= ~FC_NDISC_ACTIVE;
+ vport->fc_flag &= ~FC_FABRIC;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_can_disctmo(vport);
+ }
+
+ if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) {
+ /* Wake up lpfc_vport_delete if waiting...*/
+ if (ndlp->logo_waitq)
+ wake_up(ndlp->logo_waitq);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_ISSUE_LOGO | NLP_LOGO_SND);
+ ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO;
+ spin_unlock_irq(&ndlp->lock);
+ }
+
+ /* Safe to release resources now. */
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+/**
+ * lpfc_issue_els_npiv_logo - Issue a logo off a vport
+ * @vport: pointer to a virtual N_Port data structure.
+ * @ndlp: pointer to a node-list data structure.
+ *
+ * This routine issues a LOGO ELS command to an @ndlp off a @vport.
+ *
+ * Note that the ndlp reference count will be incremented by 1 for holding the
+ * ndlp and the reference to ndlp will be stored into the ndlp field of
+ * the IOCB for the completion callback function to the 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)
+{
+ int rc = 0;
+ struct lpfc_hba *phba = vport->phba;
+ 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;
+
+ pcmd = (uint8_t *)elsiocb->cmd_dmabuf->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->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_SND;
+ spin_unlock_irq(&ndlp->lock);
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ goto err;
+ }
+
+ rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
+ if (rc == IOCB_ERROR) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ goto err;
+ }
+ return 0;
+
+err:
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_LOGO_SND;
+ spin_unlock_irq(&ndlp->lock);
+ return 1;
+}
+
+/**
+ * lpfc_fabric_block_timeout - Handler function to the fabric block timer
+ * @t: timer context used to obtain the lpfc hba.
+ *
+ * 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(struct timer_list *t)
+{
+ struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer);
+ 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;
+
+repeat:
+ iocb = NULL;
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ /* Post any pending iocb to the SLI layer */
+ if (atomic_read(&phba->fabric_iocb_count) == 0) {
+ list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
+ list);
+ if (iocb)
+ /* Increment fabric iocb count to hold the position */
+ atomic_inc(&phba->fabric_iocb_count);
+ }
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (iocb) {
+ iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
+ iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
+ iocb->cmd_flag |= LPFC_IO_FABRIC;
+
+ 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->cmd_cmpl = iocb->fabric_cmd_cmpl;
+ iocb->fabric_cmd_cmpl = NULL;
+ iocb->cmd_flag &= ~LPFC_IO_FABRIC;
+ set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
+ iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
+ iocb->cmd_cmpl(phba, iocb, iocb);
+
+ atomic_dec(&phba->fabric_iocb_count);
+ goto repeat;
+ }
+ }
+}
+
+/**
+ * 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 + msecs_to_jiffies(100));
+
+ 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->cmd_cmpl). The original iocb's callback
+ * function pointer has been stored in iocb->fabric_cmd_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;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+
+ WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
+
+ switch (ulp_status) {
+ case IOSTAT_NPORT_RJT:
+ case IOSTAT_FABRIC_RJT:
+ if (ulp_word4 & 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.ls_rjt_error_be =
+ cpu_to_be32(ulp_word4);
+ if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
+ (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
+ lpfc_block_fabric_iocbs(phba);
+ break;
+ }
+
+ BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
+
+ cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
+ cmdiocb->fabric_cmd_cmpl = NULL;
+ cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
+ cmdiocb->cmd_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;
+
+ BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
+
+ 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_cmd_cmpl = iocb->cmd_cmpl;
+ iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
+ iocb->cmd_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->cmd_cmpl = iocb->fabric_cmd_cmpl;
+ iocb->fabric_cmd_cmpl = NULL;
+ iocb->cmd_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 field 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 field 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;
+
+ pring = lpfc_phba_elsring(phba);
+
+ if (unlikely(!pring))
+ return;
+
+ 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 field 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;
+ struct lpfc_nodelist *ndlp = NULL;
+ unsigned long iflag = 0;
+
+ spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
+ list_for_each_entry_safe(sglq_entry, sglq_next,
+ &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
+ if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
+ lpfc_nlp_put(sglq_entry->ndlp);
+ ndlp = sglq_entry->ndlp;
+ sglq_entry->ndlp = NULL;
+
+ /* If the xri on the abts_els_sgl list is for the Fport
+ * node and the vport is unloading, the xri aborted wcqe
+ * likely isn't coming back. Just release the sgl.
+ */
+ if ((vport->load_flag & FC_UNLOADING) &&
+ ndlp->nlp_DID == Fabric_DID) {
+ list_del(&sglq_entry->list);
+ sglq_entry->state = SGL_FREED;
+ list_add_tail(&sglq_entry->list,
+ &phba->sli4_hba.lpfc_els_sgl_list);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
+ return;
+}
+
+/**
+ * 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;
+
+ pring = lpfc_phba_elsring(phba);
+
+ spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
+ list_for_each_entry_safe(sglq_entry, sglq_next,
+ &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
+ if (sglq_entry->sli4_xritag == xri) {
+ list_del(&sglq_entry->list);
+ ndlp = sglq_entry->ndlp;
+ sglq_entry->ndlp = NULL;
+ list_add_tail(&sglq_entry->list,
+ &phba->sli4_hba.lpfc_els_sgl_list);
+ sglq_entry->state = SGL_FREED;
+ spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
+ iflag);
+
+ if (ndlp) {
+ lpfc_set_rrq_active(phba, ndlp,
+ sglq_entry->sli4_lxritag,
+ rxid, 1);
+ lpfc_nlp_put(ndlp);
+ }
+
+ /* Check if TXQ queue needs to be serviced */
+ if (pring && !list_empty(&pring->txq))
+ lpfc_worker_wake_up(phba);
+ return;
+ }
+ }
+ spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
+ lxri = lpfc_sli4_xri_inrange(phba, xri);
+ if (lxri == NO_XRI)
+ return;
+
+ spin_lock_irqsave(&phba->hbalock, iflag);
+ 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;
+}
+
+/* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
+ * @vport: pointer to virtual port object.
+ * @ndlp: nodelist pointer for the impacted node.
+ *
+ * The driver calls this routine in response to an SLI4 XRI ABORT CQE
+ * or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
+ * the driver is required to send a LOGO to the remote node before it
+ * attempts to recover its login to the remote node.
+ */
+void
+lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp)
+{
+ struct Scsi_Host *shost;
+ struct lpfc_hba *phba;
+ unsigned long flags = 0;
+
+ shost = lpfc_shost_from_vport(vport);
+ phba = vport->phba;
+ if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
+ lpfc_printf_log(phba, KERN_INFO,
+ LOG_SLI, "3093 No rport recovery needed. "
+ "rport in state 0x%x\n", ndlp->nlp_state);
+ return;
+ }
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "3094 Start rport recovery on shost id 0x%x "
+ "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
+ "flags 0x%x\n",
+ shost->host_no, ndlp->nlp_DID,
+ vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
+ ndlp->nlp_flag);
+ /*
+ * The rport is not responding. Remove the FCP-2 flag to prevent
+ * an ADISC in the follow-up recovery code.
+ */
+ spin_lock_irqsave(&ndlp->lock, flags);
+ ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+ ndlp->nlp_flag |= NLP_ISSUE_LOGO;
+ spin_unlock_irqrestore(&ndlp->lock, flags);
+ lpfc_unreg_rpi(vport, ndlp);
+}
+
+static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
+{
+ bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
+}
+
+static void
+lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
+{
+ u32 i;
+
+ if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
+ return;
+
+ for (i = min; i <= max; i++)
+ set_bit(i, vport->vmid_priority_range);
+}
+
+static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
+{
+ set_bit(ctcl_vmid, vport->vmid_priority_range);
+}
+
+u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
+{
+ u32 i;
+
+ i = find_first_bit(vport->vmid_priority_range,
+ LPFC_VMID_MAX_PRIORITY_RANGE);
+
+ if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
+ return 0;
+
+ clear_bit(i, vport->vmid_priority_range);
+ return i;
+}
+
+#define MAX_PRIORITY_DESC 255
+
+static void
+lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_vport *vport = cmdiocb->vport;
+ struct priority_range_desc *desc;
+ struct lpfc_dmabuf *prsp = NULL;
+ struct lpfc_vmid_priority_range *vmid_range = NULL;
+ u32 *data;
+ struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+ u8 *pcmd, max_desc;
+ u32 len, i;
+ struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
+
+ prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+
+ pcmd = prsp->virt;
+ data = (u32 *)pcmd;
+ if (data[0] == ELS_CMD_LS_RJT) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
+ "3277 QFPA LS_RJT x%x x%x\n",
+ data[0], data[1]);
+ goto out;
+ }
+ if (ulp_status) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
+ "6529 QFPA failed with status x%x x%x\n",
+ ulp_status, ulp_word4);
+ goto out;
+ }
+
+ if (!vport->qfpa_res) {
+ max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
+ vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res),
+ GFP_KERNEL);
+ if (!vport->qfpa_res)
+ goto out;
+ }
+
+ len = *((u32 *)(pcmd + 4));
+ len = be32_to_cpu(len);
+ memcpy(vport->qfpa_res, pcmd, len + 8);
+ len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
+
+ desc = (struct priority_range_desc *)(pcmd + 8);
+ vmid_range = vport->vmid_priority.vmid_range;
+ if (!vmid_range) {
+ vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range),
+ GFP_KERNEL);
+ if (!vmid_range) {
+ kfree(vport->qfpa_res);
+ goto out;
+ }
+ vport->vmid_priority.vmid_range = vmid_range;
+ }
+ vport->vmid_priority.num_descriptors = len;
+
+ for (i = 0; i < len; i++, vmid_range++, desc++) {
+ lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
+ "6539 vmid values low=%d, high=%d, qos=%d, "
+ "local ve id=%d\n", desc->lo_range,
+ desc->hi_range, desc->qos_priority,
+ desc->local_ve_id);
+
+ vmid_range->low = desc->lo_range << 1;
+ if (desc->local_ve_id == QFPA_ODD_ONLY)
+ vmid_range->low++;
+ if (desc->qos_priority)
+ vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
+ vmid_range->qos = desc->qos_priority;
+
+ vmid_range->high = desc->hi_range << 1;
+ if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
+ (desc->local_ve_id == QFPA_EVEN_ODD))
+ vmid_range->high++;
+ }
+ lpfc_init_cs_ctl_bitmap(vport);
+ for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
+ lpfc_vmid_set_cs_ctl_range(vport,
+ vport->vmid_priority.vmid_range[i].low,
+ vport->vmid_priority.vmid_range[i].high);
+ }
+
+ vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
+ out:
+ lpfc_els_free_iocb(phba, cmdiocb);
+ lpfc_nlp_put(ndlp);
+}
+
+int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_iocbq *elsiocb;
+ u8 *pcmd;
+ int ret;
+
+ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
+ if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
+ return -ENXIO;
+
+ elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
+ ndlp->nlp_DID, ELS_CMD_QFPA);
+ if (!elsiocb)
+ return -ENOMEM;
+
+ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
+
+ *((u32 *)(pcmd)) = ELS_CMD_QFPA;
+ pcmd += 4;
+
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(vport->phba, elsiocb);
+ return -ENXIO;
+ }
+
+ ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
+ if (ret != IOCB_SUCCESS) {
+ lpfc_els_free_iocb(phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ return -EIO;
+ }
+ vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
+ return 0;
+}
+
+int
+lpfc_vmid_uvem(struct lpfc_vport *vport,
+ struct lpfc_vmid *vmid, bool instantiated)
+{
+ struct lpfc_vem_id_desc *vem_id_desc;
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_iocbq *elsiocb;
+ struct instantiated_ve_desc *inst_desc;
+ struct lpfc_vmid_context *vmid_context;
+ u8 *pcmd;
+ u32 *len;
+ int ret = 0;
+
+ ndlp = lpfc_findnode_did(vport, Fabric_DID);
+ if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
+ return -ENXIO;
+
+ vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL);
+ if (!vmid_context)
+ return -ENOMEM;
+ elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
+ ndlp, Fabric_DID, ELS_CMD_UVEM);
+ if (!elsiocb)
+ goto out;
+
+ lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
+ "3427 Host vmid %s %d\n",
+ vmid->host_vmid, instantiated);
+ vmid_context->vmp = vmid;
+ vmid_context->nlp = ndlp;
+ vmid_context->instantiated = instantiated;
+ elsiocb->vmid_tag.vmid_context = vmid_context;
+ pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
+
+ if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
+ sizeof(vport->lpfc_vmid_host_uuid)))
+ memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
+ sizeof(vport->lpfc_vmid_host_uuid));
+
+ *((u32 *)(pcmd)) = ELS_CMD_UVEM;
+ len = (u32 *)(pcmd + 4);
+ *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
+
+ vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
+ vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
+ vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
+ memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
+ sizeof(vem_id_desc->vem_id));
+
+ inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
+ inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
+ inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
+ memcpy(inst_desc->global_vem_id, vmid->host_vmid,
+ sizeof(inst_desc->global_vem_id));
+
+ bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
+ bf_set(lpfc_instantiated_local_id, inst_desc,
+ vmid->un.cs_ctl_vmid);
+ if (instantiated) {
+ inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
+ } else {
+ inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
+ lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
+ }
+ inst_desc->word6 = cpu_to_be32(inst_desc->word6);
+
+ elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
+
+ elsiocb->ndlp = lpfc_nlp_get(ndlp);
+ if (!elsiocb->ndlp) {
+ lpfc_els_free_iocb(vport->phba, elsiocb);
+ goto out;
+ }
+
+ ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
+ if (ret != IOCB_SUCCESS) {
+ lpfc_els_free_iocb(vport->phba, elsiocb);
+ lpfc_nlp_put(ndlp);
+ goto out;
+ }
+
+ return 0;
+ out:
+ kfree(vmid_context);
+ return -EIO;
+}
+
+static void
+lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_vport *vport = icmdiocb->vport;
+ struct lpfc_dmabuf *prsp = NULL;
+ struct lpfc_vmid_context *vmid_context =
+ icmdiocb->vmid_tag.vmid_context;
+ struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
+ u8 *pcmd;
+ u32 *data;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+ u32 ulp_word4 = get_job_word4(phba, rspiocb);
+ struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
+ struct lpfc_vmid *vmid;
+
+ vmid = vmid_context->vmp;
+ if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
+ ndlp = NULL;
+
+ prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+ pcmd = prsp->virt;
+ data = (u32 *)pcmd;
+ if (data[0] == ELS_CMD_LS_RJT) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
+ "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
+ goto out;
+ }
+ if (ulp_status) {
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
+ "4533 UVEM error status %x: %x\n",
+ ulp_status, ulp_word4);
+ goto out;
+ }
+ spin_lock(&phba->hbalock);
+ /* Set IN USE flag */
+ vport->vmid_flag |= LPFC_VMID_IN_USE;
+ phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
+ spin_unlock(&phba->hbalock);
+
+ if (vmid_context->instantiated) {
+ write_lock(&vport->vmid_lock);
+ vmid->flag |= LPFC_VMID_REGISTERED;
+ vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
+ write_unlock(&vport->vmid_lock);
+ }
+
+ out:
+ kfree(vmid_context);
+ lpfc_els_free_iocb(phba, icmdiocb);
+ lpfc_nlp_put(ndlp);
+}