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path: root/drivers/scsi/lpfc/lpfc_nportdisc.c
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Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nportdisc.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_nportdisc.c3139
1 files changed, 3139 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
new file mode 100644
index 000000000..b86ff9fcd
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -0,0 +1,3139 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channel Host Bus Adapters. *
+ * Copyright (C) 2017-2022 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. *
+ *******************************************************************/
+
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport_fc.h>
+#include <scsi/fc/fc_fs.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.h"
+#include "lpfc_scsi.h"
+#include "lpfc_nvme.h"
+#include "lpfc_logmsg.h"
+#include "lpfc_crtn.h"
+#include "lpfc_vport.h"
+#include "lpfc_debugfs.h"
+
+
+/* Called to verify a rcv'ed ADISC was intended for us. */
+static int
+lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct lpfc_name *nn, struct lpfc_name *pn)
+{
+ /* First, we MUST have a RPI registered */
+ if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
+ return 0;
+
+ /* Compare the ADISC rsp WWNN / WWPN matches our internal node
+ * table entry for that node.
+ */
+ if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
+ return 0;
+
+ if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
+ return 0;
+
+ /* we match, return success */
+ return 1;
+}
+
+int
+lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct serv_parm *sp, uint32_t class, int flogi)
+{
+ volatile struct serv_parm *hsp = &vport->fc_sparam;
+ uint16_t hsp_value, ssp_value = 0;
+
+ /*
+ * The receive data field size and buffer-to-buffer receive data field
+ * size entries are 16 bits but are represented as two 8-bit fields in
+ * the driver data structure to account for rsvd bits and other control
+ * bits. Reconstruct and compare the fields as a 16-bit values before
+ * correcting the byte values.
+ */
+ if (sp->cls1.classValid) {
+ if (!flogi) {
+ hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
+ hsp->cls1.rcvDataSizeLsb);
+ ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
+ sp->cls1.rcvDataSizeLsb);
+ if (!ssp_value)
+ goto bad_service_param;
+ if (ssp_value > hsp_value) {
+ sp->cls1.rcvDataSizeLsb =
+ hsp->cls1.rcvDataSizeLsb;
+ sp->cls1.rcvDataSizeMsb =
+ hsp->cls1.rcvDataSizeMsb;
+ }
+ }
+ } else if (class == CLASS1)
+ goto bad_service_param;
+ if (sp->cls2.classValid) {
+ if (!flogi) {
+ hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
+ hsp->cls2.rcvDataSizeLsb);
+ ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
+ sp->cls2.rcvDataSizeLsb);
+ if (!ssp_value)
+ goto bad_service_param;
+ if (ssp_value > hsp_value) {
+ sp->cls2.rcvDataSizeLsb =
+ hsp->cls2.rcvDataSizeLsb;
+ sp->cls2.rcvDataSizeMsb =
+ hsp->cls2.rcvDataSizeMsb;
+ }
+ }
+ } else if (class == CLASS2)
+ goto bad_service_param;
+ if (sp->cls3.classValid) {
+ if (!flogi) {
+ hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
+ hsp->cls3.rcvDataSizeLsb);
+ ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
+ sp->cls3.rcvDataSizeLsb);
+ if (!ssp_value)
+ goto bad_service_param;
+ if (ssp_value > hsp_value) {
+ sp->cls3.rcvDataSizeLsb =
+ hsp->cls3.rcvDataSizeLsb;
+ sp->cls3.rcvDataSizeMsb =
+ hsp->cls3.rcvDataSizeMsb;
+ }
+ }
+ } else if (class == CLASS3)
+ goto bad_service_param;
+
+ /*
+ * Preserve the upper four bits of the MSB from the PLOGI response.
+ * These bits contain the Buffer-to-Buffer State Change Number
+ * from the target and need to be passed to the FW.
+ */
+ hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
+ ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
+ if (ssp_value > hsp_value) {
+ sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
+ sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
+ (hsp->cmn.bbRcvSizeMsb & 0x0F);
+ }
+
+ memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
+ memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
+ return 1;
+bad_service_param:
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0207 Device %x "
+ "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
+ "invalid service parameters. Ignoring device.\n",
+ ndlp->nlp_DID,
+ sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
+ sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
+ sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
+ sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
+ return 0;
+}
+
+static void *
+lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
+ struct lpfc_iocbq *rspiocb)
+{
+ struct lpfc_dmabuf *pcmd, *prsp;
+ uint32_t *lp;
+ void *ptr = NULL;
+ u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ pcmd = cmdiocb->cmd_dmabuf;
+
+ /* For lpfc_els_abort, cmd_dmabuf could be zero'ed to delay
+ * freeing associated memory till after ABTS completes.
+ */
+ if (pcmd) {
+ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
+ list);
+ if (prsp) {
+ lp = (uint32_t *) prsp->virt;
+ ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
+ }
+ } else {
+ /* Force ulp_status error since we are returning NULL ptr */
+ if (!(ulp_status)) {
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ bf_set(lpfc_wcqe_c_status, &rspiocb->wcqe_cmpl,
+ IOSTAT_LOCAL_REJECT);
+ rspiocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
+ } else {
+ rspiocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
+ rspiocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
+ }
+ }
+ ptr = NULL;
+ }
+ return ptr;
+}
+
+
+
+/*
+ * Free resources / clean up outstanding I/Os
+ * associated with a LPFC_NODELIST entry. This
+ * routine effectively results in a "software abort".
+ */
+void
+lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
+{
+ LIST_HEAD(abort_list);
+ struct lpfc_sli_ring *pring;
+ struct lpfc_iocbq *iocb, *next_iocb;
+
+ pring = lpfc_phba_elsring(phba);
+
+ /* In case of error recovery path, we might have a NULL pring here */
+ if (unlikely(!pring))
+ return;
+
+ /* Abort outstanding I/O on NPort <nlp_DID> */
+ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
+ "2819 Abort outstanding I/O on NPort x%x "
+ "Data: x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
+ ndlp->nlp_rpi);
+ /* Clean up all fabric IOs first.*/
+ lpfc_fabric_abort_nport(ndlp);
+
+ /*
+ * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
+ * of all ELS IOs that need an ABTS. The IOs need to stay on the
+ * txcmplq so that the abort operation completes them successfully.
+ */
+ spin_lock_irq(&phba->hbalock);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock(&pring->ring_lock);
+ list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
+ /* Add to abort_list on on NDLP match. */
+ if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
+ list_add_tail(&iocb->dlist, &abort_list);
+ }
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring->ring_lock);
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Abort the targeted IOs and remove them from the abort list. */
+ list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
+ spin_lock_irq(&phba->hbalock);
+ list_del_init(&iocb->dlist);
+ lpfc_sli_issue_abort_iotag(phba, pring, iocb, NULL);
+ spin_unlock_irq(&phba->hbalock);
+ }
+ /* Make sure HBA is alive */
+ lpfc_issue_hb_tmo(phba);
+
+ INIT_LIST_HEAD(&abort_list);
+
+ /* Now process the txq */
+ spin_lock_irq(&phba->hbalock);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_lock(&pring->ring_lock);
+
+ list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
+ /* Check to see if iocb matches the nport we are looking for */
+ if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
+ list_del_init(&iocb->list);
+ list_add_tail(&iocb->list, &abort_list);
+ }
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ spin_unlock(&pring->ring_lock);
+ spin_unlock_irq(&phba->hbalock);
+
+ /* Cancel all the IOCBs from the completions list */
+ lpfc_sli_cancel_iocbs(phba, &abort_list,
+ IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
+
+ lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
+}
+
+/* lpfc_defer_plogi_acc - Issue PLOGI ACC after reg_login completes
+ * @phba: pointer to lpfc hba data structure.
+ * @login_mbox: pointer to REG_RPI mailbox object
+ *
+ * The ACC for a rcv'ed PLOGI is deferred until AFTER the REG_RPI completes
+ */
+static void
+lpfc_defer_plogi_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *login_mbox)
+{
+ struct lpfc_iocbq *save_iocb;
+ struct lpfc_nodelist *ndlp;
+ MAILBOX_t *mb = &login_mbox->u.mb;
+
+ int rc;
+
+ ndlp = login_mbox->ctx_ndlp;
+ save_iocb = login_mbox->context3;
+
+ if (mb->mbxStatus == MBX_SUCCESS) {
+ /* Now that REG_RPI completed successfully,
+ * we can now proceed with sending the PLOGI ACC.
+ */
+ rc = lpfc_els_rsp_acc(login_mbox->vport, ELS_CMD_PLOGI,
+ save_iocb, ndlp, NULL);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "4576 PLOGI ACC fails pt2pt discovery: "
+ "DID %x Data: %x\n", ndlp->nlp_DID, rc);
+ }
+ }
+
+ /* Now process the REG_RPI cmpl */
+ lpfc_mbx_cmpl_reg_login(phba, login_mbox);
+ ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
+ kfree(save_iocb);
+}
+
+static int
+lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct lpfc_iocbq *cmdiocb)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_dmabuf *pcmd;
+ uint64_t nlp_portwwn = 0;
+ uint32_t *lp;
+ union lpfc_wqe128 *wqe;
+ IOCB_t *icmd;
+ struct serv_parm *sp;
+ uint32_t ed_tov;
+ LPFC_MBOXQ_t *link_mbox;
+ LPFC_MBOXQ_t *login_mbox;
+ struct lpfc_iocbq *save_iocb;
+ struct ls_rjt stat;
+ uint32_t vid, flag;
+ int rc;
+ u32 remote_did;
+
+ memset(&stat, 0, sizeof (struct ls_rjt));
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint32_t *) pcmd->virt;
+ sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+ if (wwn_to_u64(sp->portName.u.wwn) == 0) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0140 PLOGI Reject: invalid pname\n");
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+ NULL);
+ return 0;
+ }
+ if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0141 PLOGI Reject: invalid nname\n");
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+ NULL);
+ return 0;
+ }
+
+ nlp_portwwn = wwn_to_u64(ndlp->nlp_portname.u.wwn);
+ if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
+ /* Reject this request because invalid parameters */
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+ NULL);
+ return 0;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ wqe = &cmdiocb->wqe;
+ else
+ icmd = &cmdiocb->iocb;
+
+ /* PLOGI chkparm OK */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0114 PLOGI chkparm OK Data: x%x x%x x%x "
+ "x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
+ ndlp->nlp_rpi, vport->port_state,
+ vport->fc_flag);
+
+ if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
+ ndlp->nlp_fcp_info |= CLASS2;
+ else
+ ndlp->nlp_fcp_info |= CLASS3;
+
+ 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;
+ /* if already logged in, do implicit logout */
+ switch (ndlp->nlp_state) {
+ case NLP_STE_NPR_NODE:
+ if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
+ break;
+ fallthrough;
+ case NLP_STE_REG_LOGIN_ISSUE:
+ case NLP_STE_PRLI_ISSUE:
+ case NLP_STE_UNMAPPED_NODE:
+ case NLP_STE_MAPPED_NODE:
+ /* For initiators, lpfc_plogi_confirm_nport skips fabric did.
+ * For target mode, execute implicit logo.
+ * Fabric nodes go into NPR.
+ */
+ if (!(ndlp->nlp_type & NLP_FABRIC) &&
+ !(phba->nvmet_support)) {
+ /* Clear ndlp info, since follow up PRLI may have
+ * updated ndlp information
+ */
+ 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_nvme_info &= ~NLP_NVME_NSLER;
+ ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+
+ lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
+ ndlp, NULL);
+ return 1;
+ }
+ if (nlp_portwwn != 0 &&
+ nlp_portwwn != wwn_to_u64(sp->portName.u.wwn))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0143 PLOGI recv'd from DID: x%x "
+ "WWPN changed: old %llx new %llx\n",
+ ndlp->nlp_DID,
+ (unsigned long long)nlp_portwwn,
+ (unsigned long long)
+ wwn_to_u64(sp->portName.u.wwn));
+
+ /* Notify transport of connectivity loss to trigger cleanup. */
+ if (phba->nvmet_support &&
+ ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
+ lpfc_nvmet_invalidate_host(phba, ndlp);
+
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ /* rport needs to be unregistered first */
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ break;
+ }
+
+ 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_nvme_info &= ~NLP_NVME_NSLER;
+ ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+
+ login_mbox = NULL;
+ link_mbox = NULL;
+ save_iocb = NULL;
+
+ /* Check for Nport to NPort pt2pt protocol */
+ if ((vport->fc_flag & FC_PT2PT) &&
+ !(vport->fc_flag & FC_PT2PT_PLOGI)) {
+ /* rcv'ed PLOGI decides what our NPortId will be */
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ vport->fc_myDID = bf_get(els_rsp64_sid,
+ &cmdiocb->wqe.xmit_els_rsp);
+ } else {
+ vport->fc_myDID = icmd->un.rcvels.parmRo;
+ }
+
+ /* If there is an outstanding FLOGI, abort it now.
+ * The remote NPort is not going to ACC our FLOGI
+ * if its already issuing a PLOGI for pt2pt mode.
+ * This indicates our FLOGI was dropped; however, we
+ * must have ACCed the remote NPorts FLOGI to us
+ * to make it here.
+ */
+ if (phba->hba_flag & HBA_FLOGI_OUTSTANDING)
+ lpfc_els_abort_flogi(phba);
+
+ ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
+ if (sp->cmn.edtovResolution) {
+ /* E_D_TOV ticks are in nanoseconds */
+ ed_tov = (phba->fc_edtov + 999999) / 1000000;
+ }
+
+ /*
+ * For pt-to-pt, use the larger EDTOV
+ * RATOV = 2 * EDTOV
+ */
+ if (ed_tov > phba->fc_edtov)
+ phba->fc_edtov = ed_tov;
+ phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
+
+ memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
+
+ /* Issue CONFIG_LINK for SLI3 or REG_VFI for SLI4,
+ * to account for updated TOV's / parameters
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_issue_reg_vfi(vport);
+ else {
+ link_mbox = mempool_alloc(phba->mbox_mem_pool,
+ GFP_KERNEL);
+ if (!link_mbox)
+ goto out;
+ lpfc_config_link(phba, link_mbox);
+ link_mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ link_mbox->vport = vport;
+
+ /* The default completion handling for CONFIG_LINK
+ * does not require the ndlp so no reference is needed.
+ */
+ link_mbox->ctx_ndlp = ndlp;
+
+ rc = lpfc_sli_issue_mbox(phba, link_mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(link_mbox, phba->mbox_mem_pool);
+ goto out;
+ }
+ }
+
+ lpfc_can_disctmo(vport);
+ }
+
+ ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
+ if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
+ sp->cmn.valid_vendor_ver_level) {
+ vid = be32_to_cpu(sp->un.vv.vid);
+ flag = be32_to_cpu(sp->un.vv.flags);
+ if ((vid == LPFC_VV_EMLX_ID) && (flag & LPFC_VV_SUPPRESS_RSP))
+ ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
+ }
+
+ login_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!login_mbox)
+ goto out;
+
+ save_iocb = kzalloc(sizeof(*save_iocb), GFP_KERNEL);
+ if (!save_iocb)
+ goto out;
+
+ /* Save info from cmd IOCB to be used in rsp after all mbox completes */
+ memcpy((uint8_t *)save_iocb, (uint8_t *)cmdiocb,
+ sizeof(struct lpfc_iocbq));
+
+ /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ lpfc_unreg_rpi(vport, ndlp);
+
+ /* Issue REG_LOGIN first, before ACCing the PLOGI, thus we will
+ * always be deferring the ACC.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ remote_did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
+ else
+ remote_did = icmd->un.rcvels.remoteID;
+ rc = lpfc_reg_rpi(phba, vport->vpi, remote_did,
+ (uint8_t *)sp, login_mbox, ndlp->nlp_rpi);
+ if (rc)
+ goto out;
+
+ login_mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
+ login_mbox->vport = vport;
+
+ /*
+ * If there is an outstanding PLOGI issued, abort it before
+ * sending ACC rsp for received PLOGI. If pending plogi
+ * is not canceled here, the plogi will be rejected by
+ * remote port and will be retried. On a configuration with
+ * single discovery thread, this will cause a huge delay in
+ * discovery. Also this will cause multiple state machines
+ * running in parallel for this node.
+ * This only applies to a fabric environment.
+ */
+ if ((ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) &&
+ (vport->fc_flag & FC_FABRIC)) {
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(phba, ndlp);
+ }
+
+ if ((vport->port_type == LPFC_NPIV_PORT &&
+ vport->cfg_restrict_login)) {
+
+ /* no deferred ACC */
+ kfree(save_iocb);
+
+ /* This is an NPIV SLI4 instance that does not need to register
+ * a default RPI.
+ */
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ lpfc_mbox_rsrc_cleanup(phba, login_mbox,
+ MBOX_THD_UNLOCKED);
+ login_mbox = NULL;
+ } else {
+ /* In order to preserve RPIs, we want to cleanup
+ * the default RPI the firmware created to rcv
+ * this ELS request. The only way to do this is
+ * to register, then unregister the RPI.
+ */
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= (NLP_RM_DFLT_RPI | NLP_ACC_REGLOGIN |
+ NLP_RCV_PLOGI);
+ spin_unlock_irq(&ndlp->lock);
+ }
+
+ stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+ ndlp, login_mbox);
+ if (rc && login_mbox)
+ lpfc_mbox_rsrc_cleanup(phba, login_mbox,
+ MBOX_THD_UNLOCKED);
+ return 1;
+ }
+
+ /* So the order here should be:
+ * SLI3 pt2pt
+ * Issue CONFIG_LINK mbox
+ * CONFIG_LINK cmpl
+ * SLI4 pt2pt
+ * Issue REG_VFI mbox
+ * REG_VFI cmpl
+ * SLI4
+ * Issue UNREG RPI mbx
+ * UNREG RPI cmpl
+ * Issue REG_RPI mbox
+ * REG RPI cmpl
+ * Issue PLOGI ACC
+ * PLOGI ACC cmpl
+ */
+ login_mbox->mbox_cmpl = lpfc_defer_plogi_acc;
+ login_mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!login_mbox->ctx_ndlp)
+ goto out;
+
+ login_mbox->context3 = save_iocb; /* For PLOGI ACC */
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
+ spin_unlock_irq(&ndlp->lock);
+
+ /* Start the ball rolling by issuing REG_LOGIN here */
+ rc = lpfc_sli_issue_mbox(phba, login_mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_nlp_put(ndlp);
+ goto out;
+ }
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
+
+ return 1;
+out:
+ kfree(save_iocb);
+ if (login_mbox)
+ mempool_free(login_mbox, phba->mbox_mem_pool);
+
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return 0;
+}
+
+/**
+ * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: pointer to mailbox object
+ *
+ * This routine is invoked to issue a completion to a rcv'ed
+ * ADISC or PDISC after the paused RPI has been resumed.
+ **/
+static void
+lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+ struct lpfc_vport *vport;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_nodelist *ndlp;
+ uint32_t cmd;
+
+ elsiocb = (struct lpfc_iocbq *)mboxq->ctx_buf;
+ ndlp = (struct lpfc_nodelist *)mboxq->ctx_ndlp;
+ vport = mboxq->vport;
+ cmd = elsiocb->drvrTimeout;
+
+ if (cmd == ELS_CMD_ADISC) {
+ lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
+ } else {
+ lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
+ ndlp, NULL);
+ }
+
+ /* This nlp_put pairs with lpfc_sli4_resume_rpi */
+ lpfc_nlp_put(ndlp);
+
+ kfree(elsiocb);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+}
+
+static int
+lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct lpfc_iocbq *cmdiocb)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ struct lpfc_dmabuf *pcmd;
+ struct serv_parm *sp;
+ struct lpfc_name *pnn, *ppn;
+ struct ls_rjt stat;
+ ADISC *ap;
+ uint32_t *lp;
+ uint32_t cmd;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint32_t *) pcmd->virt;
+
+ cmd = *lp++;
+ if (cmd == ELS_CMD_ADISC) {
+ ap = (ADISC *) lp;
+ pnn = (struct lpfc_name *) & ap->nodeName;
+ ppn = (struct lpfc_name *) & ap->portName;
+ } else {
+ sp = (struct serv_parm *) lp;
+ pnn = (struct lpfc_name *) & sp->nodeName;
+ ppn = (struct lpfc_name *) & sp->portName;
+ }
+
+ if (get_job_ulpstatus(phba, cmdiocb) == 0 &&
+ lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
+
+ /*
+ * As soon as we send ACC, the remote NPort can
+ * start sending us data. Thus, for SLI4 we must
+ * resume the RPI before the ACC goes out.
+ */
+ if (vport->phba->sli_rev == LPFC_SLI_REV4) {
+ elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
+ GFP_KERNEL);
+ if (elsiocb) {
+ /* Save info from cmd IOCB used in rsp */
+ memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
+ sizeof(struct lpfc_iocbq));
+
+ /* Save the ELS cmd */
+ elsiocb->drvrTimeout = cmd;
+
+ lpfc_sli4_resume_rpi(ndlp,
+ lpfc_mbx_cmpl_resume_rpi, elsiocb);
+ goto out;
+ }
+ }
+
+ if (cmd == ELS_CMD_ADISC) {
+ lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
+ } else {
+ lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
+ ndlp, NULL);
+ }
+out:
+ /* If we are authenticated, move to the proper state.
+ * It is possible an ADISC arrived and the remote nport
+ * is already in MAPPED or UNMAPPED state. Catch this
+ * condition and don't set the nlp_state again because
+ * it causes an unnecessary transport unregister/register.
+ *
+ * Nodes marked for ADISC will move MAPPED or UNMAPPED state
+ * after issuing ADISC
+ */
+ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
+ if ((ndlp->nlp_state != NLP_STE_MAPPED_NODE) &&
+ !(ndlp->nlp_flag & NLP_NPR_ADISC))
+ lpfc_nlp_set_state(vport, ndlp,
+ NLP_STE_MAPPED_NODE);
+ }
+
+ return 1;
+ }
+ /* Reject this request because invalid parameters */
+ stat.un.b.lsRjtRsvd0 = 0;
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
+ stat.un.b.vendorUnique = 0;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+
+ /* 1 sec timeout */
+ 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_PLOGI;
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ return 0;
+}
+
+static int
+lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
+{
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_vport **vports;
+ int i, active_vlink_present = 0 ;
+
+ /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
+ /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
+ * PLOGIs during LOGO storms from a device.
+ */
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+ if (els_cmd == ELS_CMD_PRLO)
+ lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+ else
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+ /* This clause allows the initiator to ACC the LOGO back to the
+ * Fabric Domain Controller. It does deliberately skip all other
+ * steps 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))
+ return 0;
+
+ /* Notify transport of connectivity loss to trigger cleanup. */
+ if (phba->nvmet_support &&
+ ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
+ lpfc_nvmet_invalidate_host(phba, ndlp);
+
+ if (ndlp->nlp_DID == Fabric_DID) {
+ if (vport->port_state <= LPFC_FDISC ||
+ vport->fc_flag & FC_PT2PT)
+ goto out;
+ lpfc_linkdown_port(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_LOGO_RCVD;
+ spin_unlock_irq(shost->host_lock);
+ vports = lpfc_create_vport_work_array(phba);
+ if (vports) {
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL;
+ i++) {
+ if ((!(vports[i]->fc_flag &
+ FC_VPORT_LOGO_RCVD)) &&
+ (vports[i]->port_state > LPFC_FDISC)) {
+ active_vlink_present = 1;
+ break;
+ }
+ }
+ lpfc_destroy_vport_work_array(phba, vports);
+ }
+
+ /*
+ * Don't re-instantiate if vport is marked for deletion.
+ * If we are here first then vport_delete is going to wait
+ * for discovery to complete.
+ */
+ if (!(vport->load_flag & FC_UNLOADING) &&
+ active_vlink_present) {
+ /*
+ * If there are other active VLinks present,
+ * re-instantiate the Vlink using FDISC.
+ */
+ 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_FDISC;
+ vport->port_state = LPFC_FDISC;
+ } else {
+ spin_lock_irq(shost->host_lock);
+ phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
+ spin_unlock_irq(shost->host_lock);
+ lpfc_retry_pport_discovery(phba);
+ }
+ } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
+ ((ndlp->nlp_type & NLP_FCP_TARGET) ||
+ (ndlp->nlp_type & NLP_NVME_TARGET) ||
+ (vport->fc_flag & FC_PT2PT))) ||
+ (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
+ /* Only try to re-login if this is NOT a Fabric Node
+ * AND the remote NPORT is a FCP/NVME Target or we
+ * are in pt2pt mode. NLP_STE_ADISC_ISSUE is a special
+ * case for LOGO as a response to ADISC behavior.
+ */
+ mod_timer(&ndlp->nlp_delayfunc,
+ jiffies + msecs_to_jiffies(1000 * 1));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->lock);
+
+ ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+ }
+out:
+ /* Unregister from backend, could have been skipped due to ADISC */
+ lpfc_nlp_unreg_node(vport, ndlp);
+
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ /* The driver has to wait until the ACC completes before it continues
+ * processing the LOGO. The action will resume in
+ * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
+ * unreg_login, the driver waits so the ACC does not get aborted.
+ */
+ return 0;
+}
+
+static uint32_t
+lpfc_rcv_prli_support_check(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ struct lpfc_iocbq *cmdiocb)
+{
+ struct ls_rjt stat;
+ uint32_t *payload;
+ uint32_t cmd;
+
+ payload = cmdiocb->cmd_dmabuf->virt;
+ cmd = *payload;
+ if (vport->phba->nvmet_support) {
+ /* Must be a NVME PRLI */
+ if (cmd == ELS_CMD_PRLI)
+ goto out;
+ } else {
+ /* Initiator mode. */
+ if (!vport->nvmei_support && (cmd == ELS_CMD_NVMEPRLI))
+ goto out;
+ }
+ return 1;
+out:
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME_DISC,
+ "6115 Rcv PRLI (%x) check failed: ndlp rpi %d "
+ "state x%x flags x%x\n",
+ cmd, ndlp->nlp_rpi, ndlp->nlp_state,
+ ndlp->nlp_flag);
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_CMD_UNSUPPORTED;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_REQ_UNSUPPORTED;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+ ndlp, NULL);
+ return 0;
+}
+
+static void
+lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ struct lpfc_iocbq *cmdiocb)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_dmabuf *pcmd;
+ uint32_t *lp;
+ PRLI *npr;
+ struct fc_rport *rport = ndlp->rport;
+ u32 roles;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+ lp = (uint32_t *)pcmd->virt;
+ npr = (PRLI *)((uint8_t *)lp + sizeof(uint32_t));
+
+ if ((npr->prliType == PRLI_FCP_TYPE) ||
+ (npr->prliType == PRLI_NVME_TYPE)) {
+ if (npr->initiatorFunc) {
+ if (npr->prliType == PRLI_FCP_TYPE)
+ ndlp->nlp_type |= NLP_FCP_INITIATOR;
+ if (npr->prliType == PRLI_NVME_TYPE)
+ ndlp->nlp_type |= NLP_NVME_INITIATOR;
+ }
+ if (npr->targetFunc) {
+ if (npr->prliType == PRLI_FCP_TYPE)
+ ndlp->nlp_type |= NLP_FCP_TARGET;
+ if (npr->prliType == PRLI_NVME_TYPE)
+ ndlp->nlp_type |= NLP_NVME_TARGET;
+ if (npr->writeXferRdyDis)
+ ndlp->nlp_flag |= NLP_FIRSTBURST;
+ }
+ if (npr->Retry && ndlp->nlp_type &
+ (NLP_FCP_INITIATOR | NLP_FCP_TARGET))
+ ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+
+ if (npr->Retry && phba->nsler &&
+ ndlp->nlp_type & (NLP_NVME_INITIATOR | NLP_NVME_TARGET))
+ ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
+
+
+ /* If this driver is in nvme target mode, set the ndlp's fc4
+ * type to NVME provided the PRLI response claims NVME FC4
+ * type. Target mode does not issue gft_id so doesn't get
+ * the fc4 type set until now.
+ */
+ if (phba->nvmet_support && (npr->prliType == PRLI_NVME_TYPE)) {
+ ndlp->nlp_fc4_type |= NLP_FC4_NVME;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ }
+
+ /* Fabric Controllers send FCP PRLI as an initiator but should
+ * not get recognized as FCP type and registered with transport.
+ */
+ if (npr->prliType == PRLI_FCP_TYPE &&
+ !(ndlp->nlp_type & NLP_FABRIC))
+ ndlp->nlp_fc4_type |= NLP_FC4_FCP;
+ }
+ if (rport) {
+ /* We need to update the rport role values */
+ roles = FC_RPORT_ROLE_UNKNOWN;
+ if (ndlp->nlp_type & NLP_FCP_INITIATOR)
+ roles |= FC_RPORT_ROLE_FCP_INITIATOR;
+ if (ndlp->nlp_type & NLP_FCP_TARGET)
+ roles |= FC_RPORT_ROLE_FCP_TARGET;
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
+ "rport rolechg: role:x%x did:x%x flg:x%x",
+ roles, ndlp->nlp_DID, ndlp->nlp_flag);
+
+ if (vport->cfg_enable_fc4_type != LPFC_ENABLE_NVME)
+ fc_remote_port_rolechg(rport, roles);
+ }
+}
+
+static uint32_t
+lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
+{
+ if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ return 0;
+ }
+
+ if (!(vport->fc_flag & FC_PT2PT)) {
+ /* Check config parameter use-adisc or FCP-2 */
+ if (vport->cfg_use_adisc && ((vport->fc_flag & FC_RSCN_MODE) ||
+ ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
+ (ndlp->nlp_type & NLP_FCP_TARGET)))) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ return 1;
+ }
+ }
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_unreg_rpi(vport, ndlp);
+ return 0;
+}
+
+/**
+ * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
+ * @phba : Pointer to lpfc_hba structure.
+ * @vport: Pointer to lpfc_vport structure.
+ * @ndlp: Pointer to lpfc_nodelist structure.
+ * @rpi : rpi to be release.
+ *
+ * This function will send a unreg_login mailbox command to the firmware
+ * to release a rpi.
+ **/
+static void
+lpfc_release_rpi(struct lpfc_hba *phba, struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp, uint16_t rpi)
+{
+ LPFC_MBOXQ_t *pmb;
+ int rc;
+
+ /* If there is already an UNREG in progress for this ndlp,
+ * no need to queue up another one.
+ */
+ if (ndlp->nlp_flag & NLP_UNREG_INP) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "1435 release_rpi SKIP UNREG x%x on "
+ "NPort x%x deferred x%x flg x%x "
+ "Data: x%px\n",
+ ndlp->nlp_rpi, ndlp->nlp_DID,
+ ndlp->nlp_defer_did,
+ ndlp->nlp_flag, ndlp);
+ return;
+ }
+
+ pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
+ GFP_KERNEL);
+ if (!pmb)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "2796 mailbox memory allocation failed \n");
+ else {
+ lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
+ pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ pmb->vport = vport;
+ pmb->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!pmb->ctx_ndlp) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return;
+ }
+
+ if (((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
+ (!(vport->fc_flag & FC_OFFLINE_MODE)))
+ ndlp->nlp_flag |= NLP_UNREG_INP;
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "1437 release_rpi UNREG x%x "
+ "on NPort x%x flg x%x\n",
+ ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag);
+
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ lpfc_nlp_put(ndlp);
+ mempool_free(pmb, phba->mbox_mem_pool);
+ }
+ }
+}
+
+static uint32_t
+lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba;
+ LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+ uint16_t rpi;
+
+ phba = vport->phba;
+ /* Release the RPI if reglogin completing */
+ if (!(phba->pport->load_flag & FC_UNLOADING) &&
+ (evt == NLP_EVT_CMPL_REG_LOGIN) &&
+ (!pmb->u.mb.mbxStatus)) {
+ rpi = pmb->u.mb.un.varWords[0];
+ lpfc_release_rpi(phba, vport, ndlp, rpi);
+ }
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0271 Illegal State Transition: node x%x "
+ "event x%x, state x%x Data: x%x x%x\n",
+ ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
+ ndlp->nlp_flag);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ /* This transition is only legal if we previously
+ * rcv'ed a PLOGI. Since we don't want 2 discovery threads
+ * working on the same NPortID, do nothing for this thread
+ * to stop it.
+ */
+ if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0272 Illegal State Transition: node x%x "
+ "event x%x, state x%x Data: x%x x%x\n",
+ ndlp->nlp_DID, evt, ndlp->nlp_state,
+ ndlp->nlp_rpi, ndlp->nlp_flag);
+ }
+ return ndlp->nlp_state;
+}
+
+/* Start of Discovery State Machine routines */
+
+static uint32_t
+lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+ return ndlp->nlp_state;
+ }
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ lpfc_issue_els_logo(vport, ndlp, 0);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_unused_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb = arg;
+ struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
+ uint32_t *lp = (uint32_t *) pcmd->virt;
+ struct serv_parm *sp = (struct serv_parm *) (lp + 1);
+ struct ls_rjt stat;
+ int port_cmp;
+
+ memset(&stat, 0, sizeof (struct ls_rjt));
+
+ /* For a PLOGI, we only accept if our portname is less
+ * than the remote portname.
+ */
+ phba->fc_stat.elsLogiCol++;
+ port_cmp = memcmp(&vport->fc_portname, &sp->portName,
+ sizeof(struct lpfc_name));
+
+ if (port_cmp >= 0) {
+ /* Reject this request because the remote node will accept
+ ours */
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
+ NULL);
+ } else {
+ if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
+ (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
+ (vport->num_disc_nodes)) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ /* 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);
+ }
+ }
+ } /* If our portname was less */
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof (struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* Retrieve RPI from LOGO IOCB. RPI is used for CMD_ABORT_XRI_CN */
+ if (vport->phba->sli_rev == LPFC_SLI_REV3)
+ ndlp->nlp_rpi = cmdiocb->iocb.ulpIoTag;
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(vport->phba, ndlp);
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(phba, ndlp);
+
+ if (evt == NLP_EVT_RCV_LOGO) {
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+ } else {
+ lpfc_issue_els_logo(vport, ndlp, 0);
+ }
+
+ /* Put ndlp in npr state set plogi timer for 1 sec */
+ mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->lock);
+ ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+ ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ struct lpfc_dmabuf *pcmd, *prsp;
+ uint32_t *lp;
+ uint32_t vid, flag;
+ struct serv_parm *sp;
+ uint32_t ed_tov;
+ LPFC_MBOXQ_t *mbox;
+ int rc;
+ u32 ulp_status;
+ u32 did;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
+ /* Recovery from PLOGI collision logic */
+ return ndlp->nlp_state;
+ }
+
+ if (ulp_status)
+ goto out;
+
+ pcmd = cmdiocb->cmd_dmabuf;
+
+ prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
+ if (!prsp)
+ goto out;
+
+ lp = (uint32_t *) prsp->virt;
+ sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
+
+ /* Some switches have FDMI servers returning 0 for WWN */
+ if ((ndlp->nlp_DID != FDMI_DID) &&
+ (wwn_to_u64(sp->portName.u.wwn) == 0 ||
+ wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0142 PLOGI RSP: Invalid WWN.\n");
+ goto out;
+ }
+ if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
+ goto out;
+ /* PLOGI chkparm OK */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
+ "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag, ndlp->nlp_rpi);
+ if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
+ ndlp->nlp_fcp_info |= CLASS2;
+ else
+ ndlp->nlp_fcp_info |= CLASS3;
+
+ 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;
+
+ if ((vport->fc_flag & FC_PT2PT) &&
+ (vport->fc_flag & FC_PT2PT_PLOGI)) {
+ ed_tov = be32_to_cpu(sp->cmn.e_d_tov);
+ if (sp->cmn.edtovResolution) {
+ /* E_D_TOV ticks are in nanoseconds */
+ ed_tov = (phba->fc_edtov + 999999) / 1000000;
+ }
+
+ ndlp->nlp_flag &= ~NLP_SUPPRESS_RSP;
+ if ((phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) &&
+ sp->cmn.valid_vendor_ver_level) {
+ vid = be32_to_cpu(sp->un.vv.vid);
+ flag = be32_to_cpu(sp->un.vv.flags);
+ if ((vid == LPFC_VV_EMLX_ID) &&
+ (flag & LPFC_VV_SUPPRESS_RSP))
+ ndlp->nlp_flag |= NLP_SUPPRESS_RSP;
+ }
+
+ /*
+ * Use the larger EDTOV
+ * RATOV = 2 * EDTOV for pt-to-pt
+ */
+ if (ed_tov > phba->fc_edtov)
+ phba->fc_edtov = ed_tov;
+ phba->fc_ratov = (2 * phba->fc_edtov) / 1000;
+
+ memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
+
+ /* Issue config_link / reg_vfi to account for updated TOV's */
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ lpfc_issue_reg_vfi(vport);
+ } else {
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_vlog(vport, KERN_ERR,
+ LOG_TRACE_EVENT,
+ "0133 PLOGI: no memory "
+ "for config_link "
+ "Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag, ndlp->nlp_rpi);
+ goto out;
+ }
+
+ lpfc_config_link(phba, mbox);
+
+ mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mbox->vport = vport;
+ rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
+ if (rc == MBX_NOT_FINISHED) {
+ mempool_free(mbox, phba->mbox_mem_pool);
+ goto out;
+ }
+ }
+ }
+
+ lpfc_unreg_rpi(vport, ndlp);
+
+ mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!mbox) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0018 PLOGI: no memory for reg_login "
+ "Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag, ndlp->nlp_rpi);
+ goto out;
+ }
+
+ did = get_job_els_rsp64_did(phba, cmdiocb);
+
+ if (lpfc_reg_rpi(phba, vport->vpi, did,
+ (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
+ switch (ndlp->nlp_DID) {
+ case NameServer_DID:
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
+ /* Fabric Controller Node needs these parameters. */
+ memcpy(&ndlp->fc_sparam, sp, sizeof(struct serv_parm));
+ break;
+ case FDMI_DID:
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
+ break;
+ default:
+ ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
+ mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
+ }
+
+ mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
+ if (!mbox->ctx_ndlp)
+ goto out;
+
+ mbox->vport = vport;
+ if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
+ != MBX_NOT_FINISHED) {
+ lpfc_nlp_set_state(vport, ndlp,
+ NLP_STE_REG_LOGIN_ISSUE);
+ return ndlp->nlp_state;
+ }
+ if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
+ ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+ /* decrement node reference count to the failed mbox
+ * command
+ */
+ lpfc_nlp_put(ndlp);
+ lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0134 PLOGI: cannot issue reg_login "
+ "Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag, ndlp->nlp_rpi);
+ } else {
+ mempool_free(mbox, phba->mbox_mem_pool);
+
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0135 PLOGI: cannot format reg_login "
+ "Data: x%x x%x x%x x%x\n",
+ ndlp->nlp_DID, ndlp->nlp_state,
+ ndlp->nlp_flag, ndlp->nlp_rpi);
+ }
+
+
+out:
+ if (ndlp->nlp_DID == NameServer_DID) {
+ lpfc_vport_set_state(vport, FC_VPORT_FAILED);
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0261 Cannot Register NameServer login\n");
+ }
+
+ /*
+ ** In case the node reference counter does not go to zero, ensure that
+ ** the stale state for the node is not processed.
+ */
+
+ ndlp->nlp_prev_state = ndlp->nlp_state;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba;
+ LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+ MAILBOX_t *mb = &pmb->u.mb;
+ uint16_t rpi;
+
+ phba = vport->phba;
+ /* Release the RPI */
+ if (!(phba->pport->load_flag & FC_UNLOADING) &&
+ !mb->mbxStatus) {
+ rpi = pmb->u.mb.un.varWords[0];
+ lpfc_release_rpi(phba, vport, ndlp, rpi);
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+ } else {
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(vport->phba, ndlp);
+
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+}
+
+static uint32_t
+lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+
+ /* Don't do anything that will mess up processing of the
+ * previous RSCN.
+ */
+ if (vport->fc_flag & FC_RSCN_DEFERRED)
+ return ndlp->nlp_state;
+
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(phba, ndlp);
+
+ ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb;
+
+ /* software abort outstanding ADISC */
+ lpfc_els_abort(phba, ndlp);
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
+ spin_unlock_irq(&ndlp->lock);
+ if (vport->num_disc_nodes)
+ lpfc_more_adisc(vport);
+ }
+ return ndlp->nlp_state;
+ }
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* software abort outstanding ADISC */
+ lpfc_els_abort(phba, ndlp);
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* Treat like rcv logo */
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ ADISC *ap;
+ int rc;
+ u32 ulp_status;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+
+ if ((ulp_status) ||
+ (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
+ /* 1 sec timeout */
+ 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_PLOGI;
+
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ lpfc_unreg_rpi(vport, ndlp);
+ return ndlp->nlp_state;
+ }
+
+ if (phba->sli_rev == LPFC_SLI_REV4) {
+ rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
+ if (rc) {
+ /* Stay in state and retry. */
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ return ndlp->nlp_state;
+ }
+ }
+
+ if (ndlp->nlp_type & NLP_FCP_TARGET)
+ ndlp->nlp_fc4_type |= NLP_FC4_FCP;
+
+ if (ndlp->nlp_type & NLP_NVME_TARGET)
+ ndlp->nlp_fc4_type |= NLP_FC4_NVME;
+
+ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET)) {
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+ } else {
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ }
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+ } else {
+ /* software abort outstanding ADISC */
+ lpfc_els_abort(vport->phba, ndlp);
+
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+}
+
+static uint32_t
+lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+
+ /* Don't do anything that will mess up processing of the
+ * previous RSCN.
+ */
+ if (vport->fc_flag & FC_RSCN_DEFERRED)
+ return ndlp->nlp_state;
+
+ /* software abort outstanding ADISC */
+ lpfc_els_abort(phba, ndlp);
+
+ ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_set_adisc(vport, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+ struct ls_rjt stat;
+
+ if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb)) {
+ return ndlp->nlp_state;
+ }
+ if (vport->phba->nvmet_support) {
+ /* NVME Target mode. Handle and respond to the PRLI and
+ * transition to UNMAPPED provided the RPI has completed
+ * registration.
+ */
+ if (ndlp->nlp_flag & NLP_RPI_REGISTERED) {
+ lpfc_rcv_prli(vport, ndlp, cmdiocb);
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ } else {
+ /* RPI registration has not completed. Reject the PRLI
+ * to prevent an illegal state transition when the
+ * rpi registration does complete.
+ */
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
+ ndlp, NULL);
+ return ndlp->nlp_state;
+ }
+ } else {
+ /* Initiator mode. */
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+ LPFC_MBOXQ_t *mb;
+ LPFC_MBOXQ_t *nextmb;
+ struct lpfc_nodelist *ns_ndlp;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
+ if ((mb = phba->sli.mbox_active)) {
+ if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
+ (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
+ ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+ lpfc_nlp_put(ndlp);
+ mb->ctx_ndlp = NULL;
+ mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ }
+ }
+
+ spin_lock_irq(&phba->hbalock);
+ list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
+ if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
+ (ndlp == (struct lpfc_nodelist *)mb->ctx_ndlp)) {
+ ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
+ lpfc_nlp_put(ndlp);
+ list_del(&mb->list);
+ phba->sli.mboxq_cnt--;
+ lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_LOCKED);
+ }
+ }
+ spin_unlock_irq(&phba->hbalock);
+
+ /* software abort if any GID_FT is outstanding */
+ if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
+ ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ if (ns_ndlp)
+ lpfc_els_abort(phba, ns_ndlp);
+ }
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+ MAILBOX_t *mb = &pmb->u.mb;
+ uint32_t did = mb->un.varWords[1];
+
+ if (mb->mbxStatus) {
+ /* RegLogin failed */
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
+ "0246 RegLogin failed Data: x%x x%x x%x x%x "
+ "x%x\n",
+ did, mb->mbxStatus, vport->port_state,
+ mb->un.varRegLogin.vpi,
+ mb->un.varRegLogin.rpi);
+ /*
+ * If RegLogin failed due to lack of HBA resources do not
+ * retry discovery.
+ */
+ if (mb->mbxStatus == MBXERR_RPI_FULL) {
+ ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ return ndlp->nlp_state;
+ }
+
+ /* Put ndlp in npr state set plogi timer for 1 sec */
+ mod_timer(&ndlp->nlp_delayfunc,
+ jiffies + msecs_to_jiffies(1000 * 1));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ spin_unlock_irq(&ndlp->lock);
+ ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+
+ lpfc_issue_els_logo(vport, ndlp, 0);
+ return ndlp->nlp_state;
+ }
+
+ /* SLI4 ports have preallocated logical rpis. */
+ if (phba->sli_rev < LPFC_SLI_REV4)
+ ndlp->nlp_rpi = mb->un.varWords[0];
+
+ ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+
+ /* Only if we are not a fabric nport do we issue PRLI */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "3066 RegLogin Complete on x%x x%x x%x\n",
+ did, ndlp->nlp_type, ndlp->nlp_fc4_type);
+ if (!(ndlp->nlp_type & NLP_FABRIC) &&
+ (phba->nvmet_support == 0)) {
+ /* The driver supports FCP and NVME concurrently. If the
+ * ndlp's nlp_fc4_type is still zero, the driver doesn't
+ * know what PRLI to send yet. Figure that out now and
+ * call PRLI depending on the outcome.
+ */
+ if (vport->fc_flag & FC_PT2PT) {
+ /* If we are pt2pt, there is no Fabric to determine
+ * the FC4 type of the remote nport. So if NVME
+ * is configured try it.
+ */
+ ndlp->nlp_fc4_type |= NLP_FC4_FCP;
+ if ((!(vport->fc_flag & FC_PT2PT_NO_NVME)) &&
+ (vport->cfg_enable_fc4_type == LPFC_ENABLE_BOTH ||
+ vport->cfg_enable_fc4_type == LPFC_ENABLE_NVME)) {
+ ndlp->nlp_fc4_type |= NLP_FC4_NVME;
+ /* We need to update the localport also */
+ lpfc_nvme_update_localport(vport);
+ }
+
+ } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
+ ndlp->nlp_fc4_type |= NLP_FC4_FCP;
+
+ } else if (ndlp->nlp_fc4_type == 0) {
+ /* If we are only configured for FCP, the driver
+ * should just issue PRLI for FCP. Otherwise issue
+ * GFT_ID to determine if remote port supports NVME.
+ */
+ if (vport->cfg_enable_fc4_type != LPFC_ENABLE_FCP) {
+ lpfc_ns_cmd(vport, SLI_CTNS_GFT_ID, 0,
+ ndlp->nlp_DID);
+ return ndlp->nlp_state;
+ }
+ ndlp->nlp_fc4_type = NLP_FC4_FCP;
+ }
+
+ ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
+ if (lpfc_issue_els_prli(vport, ndlp, 0)) {
+ lpfc_issue_els_logo(vport, ndlp, 0);
+ ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ }
+ } else {
+ if ((vport->fc_flag & FC_PT2PT) && phba->nvmet_support)
+ phba->targetport->port_id = vport->fc_myDID;
+
+ /* Only Fabric ports should transition. NVME target
+ * must complete PRLI.
+ */
+ if (ndlp->nlp_type & NLP_FABRIC) {
+ ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
+ ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ }
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+ } else {
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+}
+
+static uint32_t
+lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ /* Don't do anything that will mess up processing of the
+ * previous RSCN.
+ */
+ if (vport->fc_flag & FC_RSCN_DEFERRED)
+ return ndlp->nlp_state;
+
+ ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+
+ /* If we are a target we won't immediately transition into PRLI,
+ * so if REG_LOGIN already completed we don't need to ignore it.
+ */
+ if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED) ||
+ !vport->phba->nvmet_support)
+ ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
+
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_set_adisc(vport, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
+ return ndlp->nlp_state;
+ lpfc_rcv_prli(vport, ndlp, cmdiocb);
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* Software abort outstanding PRLI before sending acc */
+ lpfc_els_abort(vport->phba, ndlp);
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+/* This routine is envoked when we rcv a PRLO request from a nport
+ * we are logged into. We should send back a PRLO rsp setting the
+ * appropriate bits.
+ * NEXT STATE = PRLI_ISSUE
+ */
+static uint32_t
+lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ struct lpfc_hba *phba = vport->phba;
+ PRLI *npr;
+ struct lpfc_nvme_prli *nvpr;
+ void *temp_ptr;
+ u32 ulp_status;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ /* A solicited PRLI is either FCP or NVME. The PRLI cmd/rsp
+ * format is different so NULL the two PRLI types so that the
+ * driver correctly gets the correct context.
+ */
+ npr = NULL;
+ nvpr = NULL;
+ temp_ptr = lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
+ if (cmdiocb->cmd_flag & LPFC_PRLI_FCP_REQ)
+ npr = (PRLI *) temp_ptr;
+ else if (cmdiocb->cmd_flag & LPFC_PRLI_NVME_REQ)
+ nvpr = (struct lpfc_nvme_prli *) temp_ptr;
+
+ if (ulp_status) {
+ if ((vport->port_type == LPFC_NPIV_PORT) &&
+ vport->cfg_restrict_login) {
+ goto out;
+ }
+
+ /* Adjust the nlp_type accordingly if the PRLI failed */
+ if (npr)
+ ndlp->nlp_fc4_type &= ~NLP_FC4_FCP;
+ if (nvpr)
+ ndlp->nlp_fc4_type &= ~NLP_FC4_NVME;
+
+ /* We can't set the DSM state till BOTH PRLIs complete */
+ goto out_err;
+ }
+
+ if (npr && (npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
+ (npr->prliType == PRLI_FCP_TYPE)) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+ "6028 FCP NPR PRLI Cmpl Init %d Target %d\n",
+ npr->initiatorFunc,
+ npr->targetFunc);
+ if (npr->initiatorFunc)
+ ndlp->nlp_type |= NLP_FCP_INITIATOR;
+ if (npr->targetFunc) {
+ ndlp->nlp_type |= NLP_FCP_TARGET;
+ if (npr->writeXferRdyDis)
+ ndlp->nlp_flag |= NLP_FIRSTBURST;
+ }
+ if (npr->Retry)
+ ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
+
+ } else if (nvpr &&
+ (bf_get_be32(prli_acc_rsp_code, nvpr) ==
+ PRLI_REQ_EXECUTED) &&
+ (bf_get_be32(prli_type_code, nvpr) ==
+ PRLI_NVME_TYPE)) {
+
+ /* Complete setting up the remote ndlp personality. */
+ if (bf_get_be32(prli_init, nvpr))
+ ndlp->nlp_type |= NLP_NVME_INITIATOR;
+
+ if (phba->nsler && bf_get_be32(prli_nsler, nvpr) &&
+ bf_get_be32(prli_conf, nvpr))
+
+ ndlp->nlp_nvme_info |= NLP_NVME_NSLER;
+ else
+ ndlp->nlp_nvme_info &= ~NLP_NVME_NSLER;
+
+ /* Target driver cannot solicit NVME FB. */
+ if (bf_get_be32(prli_tgt, nvpr)) {
+ /* Complete the nvme target roles. The transport
+ * needs to know if the rport is capable of
+ * discovery in addition to its role.
+ */
+ ndlp->nlp_type |= NLP_NVME_TARGET;
+ if (bf_get_be32(prli_disc, nvpr))
+ ndlp->nlp_type |= NLP_NVME_DISCOVERY;
+
+ /*
+ * If prli_fba is set, the Target supports FirstBurst.
+ * If prli_fb_sz is 0, the FirstBurst size is unlimited,
+ * otherwise it defines the actual size supported by
+ * the NVME Target.
+ */
+ if ((bf_get_be32(prli_fba, nvpr) == 1) &&
+ (phba->cfg_nvme_enable_fb) &&
+ (!phba->nvmet_support)) {
+ /* Both sides support FB. The target's first
+ * burst size is a 512 byte encoded value.
+ */
+ ndlp->nlp_flag |= NLP_FIRSTBURST;
+ ndlp->nvme_fb_size = bf_get_be32(prli_fb_sz,
+ nvpr);
+
+ /* Expressed in units of 512 bytes */
+ if (ndlp->nvme_fb_size)
+ ndlp->nvme_fb_size <<=
+ LPFC_NVME_FB_SHIFT;
+ else
+ ndlp->nvme_fb_size = LPFC_NVME_MAX_FB;
+ }
+ }
+
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
+ "6029 NVME PRLI Cmpl w1 x%08x "
+ "w4 x%08x w5 x%08x flag x%x, "
+ "fcp_info x%x nlp_type x%x\n",
+ be32_to_cpu(nvpr->word1),
+ be32_to_cpu(nvpr->word4),
+ be32_to_cpu(nvpr->word5),
+ ndlp->nlp_flag, ndlp->nlp_fcp_info,
+ ndlp->nlp_type);
+ }
+ if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
+ (vport->port_type == LPFC_NPIV_PORT) &&
+ vport->cfg_restrict_login) {
+out:
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_TARGET_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_issue_els_logo(vport, ndlp, 0);
+
+ ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ return ndlp->nlp_state;
+ }
+
+out_err:
+ /* The ndlp state cannot move to MAPPED or UNMAPPED before all PRLIs
+ * are complete.
+ */
+ if (ndlp->fc4_prli_sent == 0) {
+ ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET))
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
+ else if (ndlp->nlp_type &
+ (NLP_FCP_INITIATOR | NLP_NVME_INITIATOR))
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
+ } else
+ lpfc_printf_vlog(vport,
+ KERN_INFO, LOG_ELS,
+ "3067 PRLI's still outstanding "
+ "on x%06x - count %d, Pend Node Mode "
+ "transition...\n",
+ ndlp->nlp_DID, ndlp->fc4_prli_sent);
+
+ return ndlp->nlp_state;
+}
+
+/*! lpfc_device_rm_prli_issue
+ *
+ * \pre
+ * \post
+ * \param phba
+ * \param ndlp
+ * \param arg
+ * \param evt
+ * \return uint32_t
+ *
+ * \b Description:
+ * This routine is envoked when we a request to remove a nport we are in the
+ * process of PRLIing. We should software abort outstanding prli, unreg
+ * login, send a logout. We will change node state to UNUSED_NODE, put it
+ * on plogi list so it can be freed when LOGO completes.
+ *
+ */
+
+static uint32_t
+lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+ } else {
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(vport->phba, ndlp);
+
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+}
+
+
+/*! lpfc_device_recov_prli_issue
+ *
+ * \pre
+ * \post
+ * \param phba
+ * \param ndlp
+ * \param arg
+ * \param evt
+ * \return uint32_t
+ *
+ * \b Description:
+ * The routine is envoked when the state of a device is unknown, like
+ * during a link down. We should remove the nodelist entry from the
+ * unmapped list, issue a UNREG_LOGIN, do a software abort of the
+ * outstanding PRLI command, then free the node entry.
+ */
+static uint32_t
+lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+
+ /* Don't do anything that will mess up processing of the
+ * previous RSCN.
+ */
+ if (vport->fc_flag & FC_RSCN_DEFERRED)
+ return ndlp->nlp_state;
+
+ /* software abort outstanding PRLI */
+ lpfc_els_abort(phba, ndlp);
+
+ ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_set_adisc(vport, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof(struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_set_adisc(vport, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ /*
+ * DevLoss has timed out and is calling for Device Remove.
+ * In this case, abort the LOGO and cleanup the ndlp
+ */
+
+ lpfc_unreg_rpi(vport, ndlp);
+ /* software abort outstanding PLOGI */
+ lpfc_els_abort(vport->phba, ndlp);
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ /*
+ * Device Recovery events have no meaning for a node with a LOGO
+ * outstanding. The LOGO has to complete first and handle the
+ * node from that point.
+ */
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
+ return ndlp->nlp_state;
+
+ lpfc_rcv_prli(vport, ndlp, cmdiocb);
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_unmap_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
+ spin_unlock_irq(&ndlp->lock);
+ lpfc_disc_set_adisc(vport, ndlp);
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_plogi(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ if (!lpfc_rcv_prli_support_check(vport, ndlp, cmdiocb))
+ return ndlp->nlp_state;
+ lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* flush the target */
+ lpfc_sli_abort_iocb(vport, ndlp->nlp_sid, 0, LPFC_CTX_TGT);
+
+ /* Treat like rcv logo */
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg,
+ uint32_t evt)
+{
+ lpfc_disc_set_adisc(vport, ndlp);
+
+ ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ /* Ignore PLOGI if we have an outstanding LOGO */
+ if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
+ return ndlp->nlp_state;
+ if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
+ lpfc_cancel_retry_delay_tmo(vport, ndlp);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
+ spin_unlock_irq(&ndlp->lock);
+ } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
+ /* send PLOGI immediately, move to PLOGI issue state */
+ if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
+ ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ }
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+ struct ls_rjt stat;
+
+ memset(&stat, 0, sizeof (struct ls_rjt));
+ stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
+ stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
+ lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
+
+ if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
+ /*
+ * ADISC nodes will be handled in regular discovery path after
+ * receiving response from NS.
+ *
+ * For other nodes, Send PLOGI to trigger an implicit LOGO.
+ */
+ if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
+ ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ }
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ lpfc_rcv_padisc(vport, ndlp, cmdiocb);
+ /*
+ * Do not start discovery if discovery is about to start
+ * or discovery in progress for this node. Starting discovery
+ * here will affect the counting of discovery threads.
+ */
+ if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
+ !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
+ /*
+ * ADISC nodes will be handled in regular discovery path after
+ * receiving response from NS.
+ *
+ * For other nodes, Send PLOGI to trigger an implicit LOGO.
+ */
+ if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
+ ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
+ lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
+ lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
+ }
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
+
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_LOGO_ACC;
+ spin_unlock_irq(&ndlp->lock);
+
+ lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
+
+ if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
+ mod_timer(&ndlp->nlp_delayfunc,
+ jiffies + msecs_to_jiffies(1000 * 1));
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_DELAY_TMO;
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
+ } else {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ spin_unlock_irq(&ndlp->lock);
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ u32 ulp_status;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ if (ulp_status)
+ return NLP_STE_FREED_NODE;
+
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ u32 ulp_status;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+
+ /* For the fabric port just clear the fc flags. */
+ if (ndlp->nlp_DID == Fabric_DID) {
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
+ spin_unlock_irq(shost->host_lock);
+ }
+ lpfc_unreg_rpi(vport, ndlp);
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *cmdiocb, *rspiocb;
+ u32 ulp_status;
+
+ cmdiocb = (struct lpfc_iocbq *) arg;
+ rspiocb = cmdiocb->rsp_iocb;
+
+ ulp_status = get_job_ulpstatus(phba, rspiocb);
+
+ if (ulp_status && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
+ struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
+ MAILBOX_t *mb = &pmb->u.mb;
+
+ if (!mb->mbxStatus) {
+ /* SLI4 ports have preallocated logical rpis. */
+ if (vport->phba->sli_rev < LPFC_SLI_REV4)
+ ndlp->nlp_rpi = mb->un.varWords[0];
+ ndlp->nlp_flag |= NLP_RPI_REGISTERED;
+ if (ndlp->nlp_flag & NLP_LOGO_ACC) {
+ lpfc_unreg_rpi(vport, ndlp);
+ }
+ } else {
+ if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+ }
+ }
+ return ndlp->nlp_state;
+}
+
+static uint32_t
+lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag |= NLP_NODEV_REMOVE;
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+ }
+ lpfc_drop_node(vport, ndlp);
+ return NLP_STE_FREED_NODE;
+}
+
+static uint32_t
+lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ /* Don't do anything that will mess up processing of the
+ * previous RSCN.
+ */
+ if (vport->fc_flag & FC_RSCN_DEFERRED)
+ return ndlp->nlp_state;
+
+ lpfc_cancel_retry_delay_tmo(vport, ndlp);
+ spin_lock_irq(&ndlp->lock);
+ ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
+ ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
+ spin_unlock_irq(&ndlp->lock);
+ return ndlp->nlp_state;
+}
+
+
+/* This next section defines the NPort Discovery State Machine */
+
+/* There are 4 different double linked lists nodelist entries can reside on.
+ * The plogi list and adisc list are used when Link Up discovery or RSCN
+ * processing is needed. Each list holds the nodes that we will send PLOGI
+ * or ADISC on. These lists will keep track of what nodes will be effected
+ * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
+ * The unmapped_list will contain all nodes that we have successfully logged
+ * into at the Fibre Channel level. The mapped_list will contain all nodes
+ * that are mapped FCP targets.
+ */
+/*
+ * The bind list is a list of undiscovered (potentially non-existent) nodes
+ * that we have saved binding information on. This information is used when
+ * nodes transition from the unmapped to the mapped list.
+ */
+/* For UNUSED_NODE state, the node has just been allocated .
+ * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
+ * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
+ * and put on the unmapped list. For ADISC processing, the node is taken off
+ * the ADISC list and placed on either the mapped or unmapped list (depending
+ * on its previous state). Once on the unmapped list, a PRLI is issued and the
+ * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
+ * changed to UNMAPPED_NODE. If the completion indicates a mapped
+ * node, the node is taken off the unmapped list. The binding list is checked
+ * for a valid binding, or a binding is automatically assigned. If binding
+ * assignment is unsuccessful, the node is left on the unmapped list. If
+ * binding assignment is successful, the associated binding list entry (if
+ * any) is removed, and the node is placed on the mapped list.
+ */
+/*
+ * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
+ * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
+ * expire, all effected nodes will receive a DEVICE_RM event.
+ */
+/*
+ * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
+ * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
+ * check, additional nodes may be added or removed (via DEVICE_RM) to / from
+ * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
+ * we will first process the ADISC list. 32 entries are processed initially and
+ * ADISC is initited for each one. Completions / Events for each node are
+ * funnelled thru the state machine. As each node finishes ADISC processing, it
+ * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
+ * waiting, and the ADISC list count is identically 0, then we are done. For
+ * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
+ * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
+ * list. 32 entries are processed initially and PLOGI is initited for each one.
+ * Completions / Events for each node are funnelled thru the state machine. As
+ * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
+ * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
+ * indentically 0, then we are done. We have now completed discovery / RSCN
+ * handling. Upon completion, ALL nodes should be on either the mapped or
+ * unmapped lists.
+ */
+
+static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
+ (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
+ /* Action routine Event Current State */
+ lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
+ lpfc_rcv_els_unused_node, /* RCV_PRLI */
+ lpfc_rcv_logo_unused_node, /* RCV_LOGO */
+ lpfc_rcv_els_unused_node, /* RCV_ADISC */
+ lpfc_rcv_els_unused_node, /* RCV_PDISC */
+ lpfc_rcv_els_unused_node, /* RCV_PRLO */
+ lpfc_disc_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_unused_node, /* DEVICE_RM */
+ lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
+ lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
+ lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
+ lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
+ lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
+ lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
+ lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
+ lpfc_device_rm_plogi_issue, /* DEVICE_RM */
+ lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
+ lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
+ lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
+ lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
+ lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
+ lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
+ lpfc_disc_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_disc_illegal, /* CMPL_LOGO */
+ lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_adisc_issue, /* DEVICE_RM */
+ lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
+ lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
+ lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
+ lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
+ lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
+ lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
+ lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_disc_illegal, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
+ lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
+ lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
+ lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
+ lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
+ lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
+ lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
+ lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
+ lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
+ lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
+ lpfc_disc_illegal, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_prli_issue, /* DEVICE_RM */
+ lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
+ lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
+ lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
+ lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
+ lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
+ lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
+ lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_logo_issue, /* DEVICE_RM */
+ lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
+ lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
+ lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
+ lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
+ lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
+ lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
+ lpfc_disc_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_disc_illegal, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_unmap_node, /* DEVICE_RM */
+ lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
+ lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
+ lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
+ lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
+ lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
+ lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
+ lpfc_disc_illegal, /* CMPL_PLOGI */
+ lpfc_disc_illegal, /* CMPL_PRLI */
+ lpfc_disc_illegal, /* CMPL_LOGO */
+ lpfc_disc_illegal, /* CMPL_ADISC */
+ lpfc_disc_illegal, /* CMPL_REG_LOGIN */
+ lpfc_disc_illegal, /* DEVICE_RM */
+ lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
+
+ lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
+ lpfc_rcv_prli_npr_node, /* RCV_PRLI */
+ lpfc_rcv_logo_npr_node, /* RCV_LOGO */
+ lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
+ lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
+ lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
+ lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
+ lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
+ lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
+ lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
+ lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
+ lpfc_device_rm_npr_node, /* DEVICE_RM */
+ lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
+};
+
+int
+lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
+ void *arg, uint32_t evt)
+{
+ uint32_t cur_state, rc;
+ uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
+ uint32_t);
+ uint32_t got_ndlp = 0;
+ uint32_t data1;
+
+ if (lpfc_nlp_get(ndlp))
+ got_ndlp = 1;
+
+ cur_state = ndlp->nlp_state;
+
+ data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
+ ((uint32_t)ndlp->nlp_type));
+ /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "0211 DSM in event x%x on NPort x%x in "
+ "state %d rpi x%x Data: x%x x%x\n",
+ evt, ndlp->nlp_DID, cur_state, ndlp->nlp_rpi,
+ ndlp->nlp_flag, data1);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+ "DSM in: evt:%d ste:%d did:x%x",
+ evt, cur_state, ndlp->nlp_DID);
+
+ func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
+ rc = (func) (vport, ndlp, arg, evt);
+
+ /* DSM out state <rc> on NPort <nlp_DID> */
+ if (got_ndlp) {
+ data1 = (((uint32_t)ndlp->nlp_fc4_type << 16) |
+ ((uint32_t)ndlp->nlp_type));
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "0212 DSM out state %d on NPort x%x "
+ "rpi x%x Data: x%x x%x\n",
+ rc, ndlp->nlp_DID, ndlp->nlp_rpi, ndlp->nlp_flag,
+ data1);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+ "DSM out: ste:%d did:x%x flg:x%x",
+ rc, ndlp->nlp_DID, ndlp->nlp_flag);
+ /* Decrement the ndlp reference count held for this function */
+ lpfc_nlp_put(ndlp);
+ } else {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
+ "0213 DSM out state %d on NPort free\n", rc);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
+ "DSM out: ste:%d did:x%x flg:x%x",
+ rc, 0, 0);
+ }
+
+ return rc;
+}