/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2004-2016 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.broadcom.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. *
*******************************************************************/ /* See Fibre Channel protocol T11 FC-LS for details */ #include <linux/blkdev.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h>
/** * lpfc_els_chk_latt - Check host link attention event for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there is an outstanding host link * attention event during the discovery process with the @vport. It is done * by reading the HBA's Host Attention (HA) register. If there is any host * link attention events during this @vport's discovery process, the @vport * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall * be issued if the link state is not already in host link cleared state, * and a return code shall indicate whether the host link attention event * had happened. * * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport * state in LPFC_VPORT_READY, the request for checking host link attention * event will be ignored and a return code shall indicate no host link * attention event had happened. * * Return codes * 0 - no host link attention event happened * 1 - host link attention event happened
**/ int
lpfc_els_chk_latt(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
uint32_t ha_copy;
/* Read the HBA Host Attention Register */ if (lpfc_readl(phba->HAregaddr, &ha_copy)) return 1;
if (!(ha_copy & HA_LATT)) return 0;
/* Pending Link Event during Discovery */
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0237 Pending Link Event during " "Discovery: State x%x\n",
phba->pport->port_state);
/* CLEAR_LA should re-enable link attention events and * we should then immediately take a LATT event. The * LATT processing should call lpfc_linkdown() which * will cleanup any left over in-progress discovery * events.
*/
set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
if (phba->link_state != LPFC_CLEAR_LA)
lpfc_issue_clear_la(phba, vport);
if (rsp && rsp->la_cmd == ELS_LS_ACC) returntrue; returnfalse;
}
/** * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure * @vport: pointer to a host virtual N_Port data structure. * @expect_rsp: flag indicating whether response is expected. * @cmd_size: size of the ELS command. * @retry: number of retries to the command when it fails. * @ndlp: pointer to a node-list data structure. * @did: destination identifier. * @elscmd: the ELS command code. * * This routine is used for allocating a lpfc-IOCB data structure from * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters * passed into the routine for discovery state machine to issue an Extended * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation * and preparation routine that is used by all the discovery state machine * routines and the ELS command-specific fields will be later set up by * the individual discovery machine routines after calling this routine * allocating and preparing a generic IOCB data structure. It fills in the * Buffer Descriptor Entries (BDEs), allocates buffers for both command * payload and response payload (if expected). The reference count on the * ndlp is incremented by 1 and the reference to the ndlp is put into * ndlp of the IOCB data structure for this IOCB to hold the ndlp * reference for the command's callback function to access later. * * Return code * Pointer to the newly allocated/prepared els iocb data structure * NULL - when els iocb data structure allocation/preparation failed
**/ struct lpfc_iocbq *
lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
u16 cmd_size, u8 retry, struct lpfc_nodelist *ndlp, u32 did,
u32 elscmd)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp; struct ulp_bde64_le *bpl;
u32 timeout = 0;
if (!lpfc_is_link_up(phba)) return NULL;
/* Allocate buffer for command iocb */
elsiocb = lpfc_sli_get_iocbq(phba); if (!elsiocb) return NULL;
/* * If this command is for fabric controller and HBA running * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
*/ if (did == Fabric_DID &&
test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
(elscmd == ELS_CMD_FLOGI ||
elscmd == ELS_CMD_FDISC ||
elscmd == ELS_CMD_LOGO)) switch (elscmd) { case ELS_CMD_FLOGI:
elsiocb->cmd_flag |=
((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_FDISC:
elsiocb->cmd_flag |=
((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK); break; case ELS_CMD_LOGO:
elsiocb->cmd_flag |=
((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
& LPFC_FIP_ELS_ID_MASK); break;
} else
elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
/* fill in BDEs for command */ /* Allocate buffer for command payload */
pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL); if (pcmd)
pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); if (!pcmd || !pcmd->virt) goto els_iocb_free_pcmb_exit;
INIT_LIST_HEAD(&pcmd->list);
/* Allocate buffer for response payload */ if (expect_rsp) {
prsp = kmalloc(sizeof(*prsp), GFP_KERNEL); if (prsp)
prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&prsp->phys); if (!prsp || !prsp->virt) goto els_iocb_free_prsp_exit;
INIT_LIST_HEAD(&prsp->list);
} else {
prsp = NULL;
}
/* Allocate buffer for Buffer ptr list */
pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL); if (pbuflist)
pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
&pbuflist->phys); if (!pbuflist || !pbuflist->virt) goto els_iocb_free_pbuf_exit;
INIT_LIST_HEAD(&pbuflist->list);
if (expect_rsp) { switch (elscmd) { case ELS_CMD_FLOGI:
timeout = FF_DEF_RATOV * 2; break; case ELS_CMD_LOGO:
timeout = phba->fc_ratov; break; default:
timeout = phba->fc_ratov * 2;
}
/* Fill SGE for the num bde count */
elsiocb->num_bdes = 2;
}
/** * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a fabric registration login for a @vport. An * active ndlp node with Fabric_DID must already exist for this @vport. * The routine invokes two mailbox commands to carry out fabric registration * login through the HBA firmware: the first mailbox command requests the * HBA to perform link configuration for the @vport; and the second mailbox * command requests the HBA to perform the actual fabric registration login * with the @vport. * * Return code * 0 - successfully issued fabric registration login for @vport * -ENXIO -- failed to issue fabric registration login for @vport
**/ int
lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox; struct lpfc_nodelist *ndlp; struct serv_parm *sp; int rc; int err = 0;
mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
mbox->vport = vport; /* increment the reference count on ndlp to hold reference * for the callback routine.
*/
mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) {
err = 6; goto fail_free_mbox;
}
fail_issue_reg_login: /* decrement the reference count on ndlp just incremented * for the failed mbox command.
*/
lpfc_nlp_put(ndlp);
fail_free_mbox:
lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
fail:
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0249 Cannot issue Register Fabric login: Err %d\n",
err); return -ENXIO;
}
/** * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for * the @vport. This mailbox command is necessary for SLI4 port only. * * Return code * 0 - successfully issued REG_VFI for @vport * A failure code otherwise.
**/ int
lpfc_issue_reg_vfi(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mboxq = NULL; struct lpfc_nodelist *ndlp; struct lpfc_dmabuf *dmabuf = NULL; int rc = 0;
/* move forward in case of SLI4 FC port loopback test and pt2pt mode */ if ((phba->sli_rev == LPFC_SLI_REV4) &&
!(phba->link_flag & LS_LOOPBACK_MODE) &&
!test_bit(FC_PT2PT, &vport->fc_flag)) {
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) {
rc = -ENODEV; goto fail;
}
}
/** * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login * @vport: pointer to a host virtual N_Port data structure. * * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for * the @vport. This mailbox command is necessary for SLI4 port only. * * Return code * 0 - successfully issued REG_VFI for @vport * A failure code otherwise.
**/ int
lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mboxq; int rc;
/** * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. * @vport: pointer to a host virtual N_Port data structure. * @sp: pointer to service parameter data structure. * * This routine is called from FLOGI/FDISC completion handler functions. * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric * node nodename is changed in the completion service parameter else return * 0. This function also set flag in the vport data structure to delay * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric * node nodename is changed in the completion service parameter. * * Return code * 0 - FCID and Fabric Nodename and Fabric portname is not changed. * 1 - FCID or Fabric Nodename or Fabric portname is changed. *
**/ static uint8_t
lpfc_check_clean_addr_bit(struct lpfc_vport *vport, struct serv_parm *sp)
{ struct lpfc_hba *phba = vport->phba;
uint8_t fabric_param_changed = 0;
if ((vport->fc_prevDID != vport->fc_myDID) ||
memcmp(&vport->fabric_portname, &sp->portName, sizeof(struct lpfc_name)) ||
memcmp(&vport->fabric_nodename, &sp->nodeName, sizeof(struct lpfc_name)) ||
(vport->vport_flag & FAWWPN_PARAM_CHG)) {
fabric_param_changed = 1;
vport->vport_flag &= ~FAWWPN_PARAM_CHG;
} /* * Word 1 Bit 31 in common service parameter is overloaded. * Word 1 Bit 31 in FLOGI request is multiple NPort request * Word 1 Bit 31 in FLOGI response is clean address bit * * If fabric parameter is changed and clean address bit is * cleared delay nport discovery if * - vport->fc_prevDID != 0 (not initial discovery) OR * - lpfc_delay_discovery module parameter is set.
*/ if (fabric_param_changed && !sp->cmn.clean_address_bit &&
(vport->fc_prevDID || phba->cfg_delay_discovery))
set_bit(FC_DISC_DELAYED, &vport->fc_flag);
return fabric_param_changed;
}
/** * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * @ulp_word4: command response value * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into a fabric * port in a fabric topology. It properly sets up the parameters to the @ndlp * from the IOCB response. It also check the newly assigned N_Port ID to the * @vport against the previously assigned N_Port ID. If it is different from * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine * is invoked on all the remaining nodes with the @vport to unregister the * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() * is invoked to register login to the fabric. * * Return code * 0 - Success (currently, always return 0)
**/ staticint
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp, uint32_t ulp_word4)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np;
uint8_t fabric_param_changed;
set_bit(FC_FABRIC, &vport->fc_flag);
phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { if (sp->cmn.response_multiple_NPort) {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT, "1816 FLOGI NPIV supported, " "response data 0x%x\n",
sp->cmn.response_multiple_NPort);
spin_lock_irq(&phba->hbalock);
phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
} else { /* Because we asked f/w for NPIV it still expects us
to call reg_vnpid at least for the physical host */
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_ELS | LOG_VPORT, "1817 Fabric does not support NPIV " "- configuring single port mode.\n");
spin_lock_irq(&phba->hbalock);
phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
spin_unlock_irq(&phba->hbalock);
}
}
/* * For FC we need to do some special processing because of the SLI * Port's default settings of the Common Service Parameters.
*/ if ((phba->sli_rev == LPFC_SLI_REV4) &&
(phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if (fabric_param_changed)
lpfc_unregister_fcf_prep(phba);
/* This should just update the VFI CSPs*/ if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
lpfc_issue_reg_vfi(vport);
}
if (fabric_param_changed &&
!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
/* If our NportID changed, we need to ensure all * remaining NPORTs get unreg_login'ed.
*/
list_for_each_entry_safe(np, next_np,
&vport->fc_nodes, nlp_listp) { if ((np->nlp_state != NLP_STE_NPR_NODE) ||
!test_bit(NLP_NPR_ADISC, &np->nlp_flag)) continue;
clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
lpfc_unreg_rpi(vport, np);
}
lpfc_cleanup_pending_mbox(vport);
if (phba->sli_rev == LPFC_SLI_REV4) {
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
}
/* * For SLI3 and SLI4, the VPI needs to be reregistered in * response to this fabric parameter change event.
*/
set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
} elseif ((phba->sli_rev == LPFC_SLI_REV4) &&
!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) { /* * Driver needs to re-reg VPI in order for f/w * to update the MAC address.
*/
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
lpfc_register_new_vport(phba, vport, ndlp); return 0;
}
/** * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @sp: pointer to service parameter data structure. * * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback * function to handle the completion of a Fabric Login (FLOGI) into an N_Port * in a point-to-point topology. First, the @vport's N_Port Name is compared * with the received N_Port Name: if the @vport's N_Port Name is greater than * the received N_Port Name lexicographically, this node shall assign local * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, * this node shall just wait for the remote node to issue PLOGI and assign * N_Port IDs. * * Return code * 0 - Success * -ENXIO - Fail
**/ staticint
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, struct serv_parm *sp)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox; int rc;
/* If we are pt2pt with another NPort, force NPIV off! */
phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
/* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
phba->fc_topology_changed = 0;
}
if (rc >= 0) { /* This side will initiate the PLOGI */
set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
/* * N_Port ID cannot be 0, set our Id to LocalID * the other side will be RemoteID.
*/
/* not equal */ if (rc)
vport->fc_myDID = PT2PT_LocalID;
/* If not registered with a transport, decrement ndlp reference * count indicating that ndlp can be safely released when other * references are removed.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
lpfc_nlp_put(ndlp);
ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); if (!ndlp) { /* * Cannot find existing Fabric ndlp, so allocate a * new one
*/
ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); if (!ndlp) goto fail;
}
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); /* Set state will put ndlp onto node list if not already done */
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) goto fail;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool); goto fail;
}
} else { /* This side will wait for the PLOGI. If not registered with * a transport, decrement node reference count indicating that * ndlp can be released when other references are removed.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
lpfc_nlp_put(ndlp);
/* Start discovery - this should just do CLEAR_LA */
lpfc_disc_start(vport);
}
return 0;
fail: return -ENXIO;
}
/** * lpfc_cmpl_els_flogi - Completion callback function for flogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the top-level completion callback function for issuing * a Fabric Login (FLOGI) command. If the response IOCB reported error, * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If * retry has been made (either immediately or delayed with lpfc_els_retry() * returning 1), the command IOCB will be released and function returned. * If the retry attempt has been given up (possibly reach the maximum * number of retries), one additional decrement of ndlp reference shall be * invoked before going out after releasing the command IOCB. This will * actually release the remote node (Note, lpfc_els_free_iocb() will also * invoke one decrement of ndlp reference count). If no error reported in * the IOCB status, the command Port ID field is used to determine whether * this is a point-to-point topology or a fabric topology: if the Port ID * field is assigned, it is a fabric topology; otherwise, it is a * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the * specific topology completion conditions.
**/ staticvoid
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
IOCB_t *irsp; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; struct serv_parm *sp;
uint16_t fcf_index; int rc;
u32 ulp_status, ulp_word4, tmo; bool flogi_in_retry = false;
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) { /* One additional decrement on node reference count to * trigger the release of the node
*/ if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
lpfc_nlp_put(ndlp); goto out;
}
/* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* Address a timing race with dev_loss. If dev_loss * is active on this FPort node, put the initial ref * count back to stop premature node release actions.
*/
lpfc_check_nlp_post_devloss(vport, ndlp);
flogi_in_retry = true; goto out;
}
/* The FLOGI will not be retried. If the FPort node is not * registered with the SCSI transport, remove the initial * reference to trigger node release.
*/ if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
lpfc_nlp_put(ndlp);
/* If this is not a loop open failure, bail out */ if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
((ulp_word4 & IOERR_PARAM_MASK) ==
IOERR_LOOP_OPEN_FAILURE))) { /* Warn FLOGI status */
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0100 FLOGI Status:x%x/x%x " "TMO:x%x\n",
ulp_status, ulp_word4, tmo); goto flogifail;
}
/* FLOGI failed, so there is no fabric */
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
/* If private loop, then allow max outstanding els to be * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no * alpa map would take too long otherwise.
*/ if (phba->alpa_map[0] == 0)
vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; if ((phba->sli_rev == LPFC_SLI_REV4) &&
(!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) ||
(vport->fc_prevDID != vport->fc_myDID) ||
phba->fc_topology_changed)) { if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) { if (phba->fc_topology_changed) {
lpfc_unregister_fcf_prep(phba);
clear_bit(FC_VFI_REGISTERED,
&vport->fc_flag);
phba->fc_topology_changed = 0;
} else {
lpfc_sli4_unreg_all_rpis(vport);
}
}
/* Do not register VFI if the driver aborted FLOGI */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_issue_reg_vfi(vport);
/* * The FLOGI succeeded. Sync the data for the CPU before * accessing it.
*/
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out;
sp = prsp->virt + sizeof(uint32_t);
/* reinitialize the VMID datastructure before returning */ if (lpfc_is_vmid_enabled(phba)) {
lpfc_reinit_vmid(vport);
vport->vmid_flag = 0;
} if (sp->cmn.priority_tagging)
vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
LPFC_VMID_TYPE_PRIO);
/* * Address a timing race with dev_loss. If dev_loss is active on * this FPort node, put the initial ref count back to stop premature * node release actions.
*/
lpfc_check_nlp_post_devloss(vport, ndlp); if (vport->port_state == LPFC_FLOGI) { /* * If Common Service Parameters indicate Nport * we are point to point, if Fport we are Fabric.
*/ if (sp->cmn.fPort)
rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
ulp_word4); elseif (!test_bit(HBA_FCOE_MODE, &phba->hba_flag))
rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); else {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "2831 FLOGI response with cleared Fabric " "bit fcf_index 0x%x " "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " "Fabric Name " "%02x%02x%02x%02x%02x%02x%02x%02x\n",
phba->fcf.current_rec.fcf_indx,
phba->fcf.current_rec.switch_name[0],
phba->fcf.current_rec.switch_name[1],
phba->fcf.current_rec.switch_name[2],
phba->fcf.current_rec.switch_name[3],
phba->fcf.current_rec.switch_name[4],
phba->fcf.current_rec.switch_name[5],
phba->fcf.current_rec.switch_name[6],
phba->fcf.current_rec.switch_name[7],
phba->fcf.current_rec.fabric_name[0],
phba->fcf.current_rec.fabric_name[1],
phba->fcf.current_rec.fabric_name[2],
phba->fcf.current_rec.fabric_name[3],
phba->fcf.current_rec.fabric_name[4],
phba->fcf.current_rec.fabric_name[5],
phba->fcf.current_rec.fabric_name[6],
phba->fcf.current_rec.fabric_name[7]);
lpfc_nlp_put(ndlp);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
spin_unlock_irq(&phba->hbalock);
clear_bit(FCF_RR_INPROG, &phba->hba_flag);
clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out;
} if (!rc) { /* Mark the FCF discovery process done */ if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag))
lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
LOG_ELS, "2769 FLOGI to FCF (x%x) " "completed successfully\n",
phba->fcf.current_rec.fcf_indx);
spin_lock_irq(&phba->hbalock);
phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
spin_unlock_irq(&phba->hbalock);
clear_bit(FCF_RR_INPROG, &phba->hba_flag);
clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out;
}
} elseif (vport->port_state > LPFC_FLOGI &&
test_bit(FC_PT2PT, &vport->fc_flag)) { /* * In a p2p topology, it is possible that discovery has * already progressed, and this completion can be ignored. * Recheck the indicated topology.
*/ if (!sp->cmn.fPort) goto out;
}
if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) { /* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(vport);
/** * lpfc_cmpl_els_link_down - Completion callback function for ELS command * aborted during a link down * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. *
*/ staticvoid
lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{
uint32_t *pcmd;
uint32_t cmd;
u32 ulp_status, ulp_word4;
/** * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Fabric Login (FLOGI) Request ELS command * for a @vport. The initiator service parameters are put into the payload * of the FLOGI Request IOCB and the top-level callback function pointer * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback * function field. The lpfc_issue_fabric_iocb routine is invoked to send * out FLOGI ELS command with one outstanding fabric IOCB at a time. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FLOGI ELS command. * * Return code * 0 - successfully issued flogi iocb for @vport * 1 - failed to issue flogi iocb for @vport
**/ staticint
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{ struct lpfc_hba *phba = vport->phba; struct serv_parm *sp; union lpfc_wqe128 *wqe = NULL;
IOCB_t *icmd = NULL; struct lpfc_iocbq *elsiocb; struct lpfc_iocbq defer_flogi_acc;
u8 *pcmd, ct;
uint16_t cmdsize;
uint32_t tmo, did; int rc;
/* Check for a deferred FLOGI ACC condition */ if (phba->defer_flogi_acc.flag) { /* lookup ndlp for received FLOGI */
ndlp = lpfc_findnode_did(vport, 0); if (!ndlp) return 0;
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
/* Decrement the held ndlp that was incremented when the * deferred flogi acc flag was set.
*/ if (phba->defer_flogi_acc.ndlp) {
lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
phba->defer_flogi_acc.ndlp = NULL;
}
vport->fc_myDID = did;
}
return 0;
}
/** * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs * @phba: pointer to lpfc hba data structure. * * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq * list and issues an abort IOCB commond on each outstanding IOCB that * contains a active Fabric_DID ndlp. Note that this function is to issue * the abort IOCB command on all the outstanding IOCBs, thus when this * function returns, it does not guarantee all the IOCBs are actually aborted. * * Return code * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
**/ int
lpfc_els_abort_flogi(struct lpfc_hba *phba)
{ struct lpfc_sli_ring *pring; struct lpfc_iocbq *iocb, *next_iocb; struct lpfc_nodelist *ndlp;
u32 ulp_command;
/* Abort outstanding I/O on NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, "0201 Abort outstanding I/O on NPort x%x\n",
Fabric_DID);
pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return -EIO;
/* * Check the txcmplq for an iocb that matches the nport the driver is * searching for.
*/
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
ulp_command = get_job_cmnd(phba, iocb); if (ulp_command == CMD_ELS_REQUEST64_CR) {
ndlp = iocb->ndlp; if (ndlp && ndlp->nlp_DID == Fabric_DID) { if (test_bit(FC_PT2PT, &phba->pport->fc_flag) &&
!test_bit(FC_PT2PT_PLOGI,
&phba->pport->fc_flag))
iocb->fabric_cmd_cmpl =
lpfc_ignore_els_cmpl;
lpfc_sli_issue_abort_iotag(phba, pring, iocb,
NULL);
}
}
} /* Make sure HBA is alive */
lpfc_issue_hb_tmo(phba);
spin_unlock_irq(&phba->hbalock);
return 0;
}
/** * lpfc_initial_flogi - Issue an initial fabric login for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Login (FLOGI) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_flogi() routine * is then invoked with the @vport and the ndlp to perform the FLOGI for the * @vport. * * Return code * 0 - failed to issue initial flogi for @vport * 1 - successfully issued initial flogi for @vport
**/ int
lpfc_initial_flogi(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp;
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return 0; /* Set the node type */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
}
/* Reset the Fabric flag, topology change may have happened */
clear_bit(FC_FABRIC, &vport->fc_flag); if (lpfc_issue_els_flogi(vport, ndlp, 0)) { /* A node reference should be retained while registered with a * transport or dev-loss-evt work is pending. * Otherwise, decrement node reference to trigger release.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
lpfc_nlp_put(ndlp); return 0;
} return 1;
}
/** * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues an initial Fabric Discover (FDISC) for the @vport * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and * put it into the @vport's ndlp list. If an inactive ndlp found on the list, * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine * is then invoked with the @vport and the ndlp to perform the FDISC for the * @vport. * * Return code * 0 - failed to issue initial fdisc for @vport * 1 - successfully issued initial fdisc for @vport
**/ int
lpfc_initial_fdisc(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp;
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, Fabric_DID); if (!ndlp) return 0;
/* NPIV is only supported in Fabrics. */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */
lpfc_enqueue_node(vport, ndlp);
}
if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { /* A node reference should be retained while registered with a * transport or dev-loss-evt work is pending. * Otherwise, decrement node reference to trigger release.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
lpfc_nlp_put(ndlp); return 0;
} return 1;
}
/** * lpfc_more_plogi - Check and issue remaining plogis for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether there are more remaining Port Logins * (PLOGI) to be issued for the @vport. If so, it will invoke the routine * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes * to issue ELS PLOGIs up to the configured discover threads with the * @vport (@vport->cfg_discovery_threads). The function also decrement * the @vport's num_disc_node by 1 if it is not already 0.
**/ void
lpfc_more_plogi(struct lpfc_vport *vport)
{ if (vport->num_disc_nodes)
vport->num_disc_nodes--;
/* Continue discovery with <num_disc_nodes> PLOGIs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0232 Continue discovery with %d PLOGIs to go " "Data: x%x x%lx x%x\n",
vport->num_disc_nodes,
atomic_read(&vport->fc_plogi_cnt),
vport->fc_flag, vport->port_state); /* Check to see if there are more PLOGIs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) /* go thru NPR nodes and issue any remaining ELS PLOGIs */
lpfc_els_disc_plogi(vport);
return;
}
/** * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp * @phba: pointer to lpfc hba data structure. * @prsp: pointer to response IOCB payload. * @ndlp: pointer to a node-list data structure. * * This routine checks and indicates whether the WWPN of an N_Port, retrieved * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. * The following cases are considered N_Port confirmed: * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but * it does not have WWPN assigned either. If the WWPN is confirmed, the * pointer to the @ndlp will be returned. If the WWPN is not confirmed: * 1) if there is a node on vport list other than the @ndlp with the same * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked * on that node to release the RPI associated with the node; 2) if there is * no node found on vport list with the same WWPN of the N_Port PLOGI logged * into, a new node shall be allocated (or activated). In either case, the * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall * be released and the new_ndlp shall be put on to the vport node list and * its pointer returned as the confirmed node. * * Note that before the @ndlp got "released", the keepDID from not-matching * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID * of the @ndlp. This is because the release of @ndlp is actually to put it * into an inactive state on the vport node list and the vport node list * management algorithm does not allow two node with a same DID. * * Return code * pointer to the PLOGI N_Port @ndlp
**/ staticstruct lpfc_nodelist *
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, struct lpfc_nodelist *ndlp)
{ struct lpfc_vport *vport = ndlp->vport; struct lpfc_nodelist *new_ndlp; struct serv_parm *sp;
uint8_t name[sizeof(struct lpfc_name)];
uint32_t keepDID = 0; int rc; unsignedlong keep_nlp_flag = 0, keep_new_nlp_flag = 0;
uint16_t keep_nlp_state;
u32 keep_nlp_fc4_type = 0; struct lpfc_nvme_rport *keep_nrport = NULL; unsignedlong *active_rrqs_xri_bitmap = NULL;
/* Now we find out if the NPort we are logging into, matches the WWPN * we have for that ndlp. If not, we have some work to do.
*/
new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
/* return immediately if the WWPN matches ndlp */ if (new_ndlp == ndlp) return ndlp;
if (phba->sli_rev == LPFC_SLI_REV4) {
active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
GFP_KERNEL); if (active_rrqs_xri_bitmap)
memset(active_rrqs_xri_bitmap, 0,
phba->cfg_rrq_xri_bitmap_sz);
}
if (!new_ndlp) {
rc = memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)); if (!rc) { if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool); return ndlp;
}
new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID); if (!new_ndlp) { if (active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool); return ndlp;
}
} else { if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(active_rrqs_xri_bitmap,
new_ndlp->active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* * Unregister from backend if not done yet. Could have been * skipped due to ADISC
*/
lpfc_nlp_unreg_node(vport, new_ndlp);
}
keepDID = new_ndlp->nlp_DID;
/* At this point in this routine, we know new_ndlp will be * returned. however, any previous GID_FTs that were done * would have updated nlp_fc4_type in ndlp, so we must ensure * new_ndlp has the right value.
*/ if (test_bit(FC_FABRIC, &vport->fc_flag)) {
keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
}
/* if new_ndlp had NLP_UNREG_INP set, keep it */ if (test_bit(NLP_UNREG_INP, &keep_new_nlp_flag))
set_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag); else
clear_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
/* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ if (test_bit(NLP_RPI_REGISTERED, &keep_new_nlp_flag))
set_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag); else
clear_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
/* * Retain the DROPPED flag. This will take care of the init * refcount when affecting the state change
*/ if (test_bit(NLP_DROPPED, &keep_new_nlp_flag))
set_bit(NLP_DROPPED, &new_ndlp->nlp_flag); else
clear_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
ndlp->nlp_flag = keep_new_nlp_flag;
/* if ndlp had NLP_UNREG_INP set, keep it */ if (test_bit(NLP_UNREG_INP, &keep_nlp_flag))
set_bit(NLP_UNREG_INP, &ndlp->nlp_flag); else
clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
/* if ndlp had NLP_RPI_REGISTERED set, keep it */ if (test_bit(NLP_RPI_REGISTERED, &keep_nlp_flag))
set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag); else
clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
/* * Retain the DROPPED flag. This will take care of the init * refcount when affecting the state change
*/ if (test_bit(NLP_DROPPED, &keep_nlp_flag))
set_bit(NLP_DROPPED, &ndlp->nlp_flag); else
clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
/* Move this back to NPR state */ if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { /* The ndlp doesn't have a portname yet, but does have an * NPort ID. The new_ndlp portname matches the Rport's * portname. Reinstantiate the new_ndlp and reset the ndlp.
*/
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3179 PLOGI confirm NEW: %x %x\n",
new_ndlp->nlp_DID, keepDID);
/* Two ndlps cannot have the same did on the nodelist. * The KeepDID and keep_nlp_fc4_type need to be swapped * because ndlp is inflight with no WWPN.
*/
ndlp->nlp_DID = keepDID;
ndlp->nlp_fc4_type = keep_nlp_fc4_type;
lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* The ndlp and new_ndlp both have WWPNs but are swapping * NPort Ids and attributes.
*/
ndlp->nlp_DID = keepDID;
ndlp->nlp_fc4_type = keep_nlp_fc4_type;
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
memcpy(ndlp->active_rrqs_xri_bitmap,
active_rrqs_xri_bitmap,
phba->cfg_rrq_xri_bitmap_sz);
/* Since we are switching over to the new_ndlp, * reset the old ndlp state
*/ if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE))
keep_nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
ndlp->nrport = keep_nrport;
}
/* * If ndlp is not associated with any rport we can drop it here else * let dev_loss_tmo_callbk trigger DEVICE_RM event
*/ if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
if (phba->sli_rev == LPFC_SLI_REV4 &&
active_rrqs_xri_bitmap)
mempool_free(active_rrqs_xri_bitmap,
phba->active_rrq_pool);
/** * lpfc_end_rscn - Check and handle more rscn for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine checks whether more Registration State Change * Notifications (RSCNs) came in while the discovery state machine was in * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be * invoked to handle the additional RSCNs for the @vport. Otherwise, the * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of * handling the RSCNs.
**/ void
lpfc_end_rscn(struct lpfc_vport *vport)
{
if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) { /* * Check to see if more RSCNs came in while we were * processing this one.
*/ if (vport->fc_rscn_id_cnt ||
test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
lpfc_els_handle_rscn(vport); else
clear_bit(FC_RSCN_MODE, &vport->fc_flag);
}
}
/** * lpfc_cmpl_els_rrq - Completion handled for els RRQs. * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine will call the clear rrq function to free the rrq and * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not * exist then the clear_rrq is still called because the rrq needs to * be freed.
**/
/* rrq completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2880 RRQ completes to DID x%x " "Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, ulp_status, ulp_word4,
get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
if (ulp_status) { /* Check for retry */ /* Warn RRQ status Don't print the vport to vport rjts */ if (ulp_status != IOSTAT_LS_RJT ||
(((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
(phba)->pport->cfg_log_verbose & LOG_ELS)
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2881 RRQ DID:%06X Status:" "x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
}
lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
} /** * lpfc_cmpl_els_plogi - Completion callback function for plogi * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for issuing the Port * Login (PLOGI) command. For PLOGI completion, there must be an active * ndlp on the vport node list that matches the remote node ID from the * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply * ignored and command IOCB released. The PLOGI response IOCB status is * checked for error conditions. If there is error status reported, PLOGI * retry shall be attempted by invoking the lpfc_els_retry() routine. * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine * (DSM) is set for this PLOGI completion. Finally, it checks whether * there are additional N_Port nodes with the vport that need to perform * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition * PLOGIs.
**/ staticvoid
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp; struct lpfc_nodelist *ndlp, *free_ndlp; struct lpfc_dmabuf *prsp; bool disc; struct serv_parm *sp = NULL;
u32 ulp_status, ulp_word4, did, iotag; bool release_node = false;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->rsp_iocb = rspiocb;
/* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery.
*/
disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
}
if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc)
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
} /* Warn PLOGI status Don't print the vport to vport rjts */ if (ulp_status != IOSTAT_LS_RJT ||
(((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
(phba)->pport->cfg_log_verbose & LOG_ELS)
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2753 PLOGI DID:%06X " "Status:x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PLOGI);
/* If a PLOGI collision occurred, the node needs to continue * with the reglogin process.
*/
spin_lock_irq(&ndlp->lock); if ((test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag) ||
test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)) &&
ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
spin_unlock_irq(&ndlp->lock); goto out;
}
/* No PLOGI collision and the node is not registered with the * scsi or nvme transport. It is no longer an active node. Just * start the device remove process.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else { /* Good status, call state machine */
prsp = list_get_first(&cmdiocb->cmd_dmabuf->list, struct lpfc_dmabuf, list); if (!prsp) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out;
ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
ndlp->vmid_support = 0; if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
(phba->cfg_vmid_priority_tagging &&
sp->cmn.priority_tagging)) {
lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS, "4018 app_hdr_support %d tagging %d DID x%x\n",
sp->cmn.app_hdr_support,
sp->cmn.priority_tagging,
ndlp->nlp_DID); /* if the dest port supports VMID, mark it in ndlp */
ndlp->vmid_support = 1;
}
/** * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @did: destination port identifier. * @retry: number of retries to the command IOCB. * * This routine issues a Port Login (PLOGI) command to a remote N_Port * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. * This routine constructs the proper fields of the PLOGI IOCB and invokes * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding * the ndlp and the reference to ndlp will be stored into the ndlp field * of the IOCB for the completion callback function to the PLOGI ELS command. * * Return code * 0 - Successfully issued a plogi for @vport * 1 - failed to issue a plogi for @vport
**/ int
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
{ struct lpfc_hba *phba = vport->phba; struct serv_parm *sp; struct lpfc_nodelist *ndlp; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int ret;
ndlp = lpfc_findnode_did(vport, did); if (!ndlp) return 1;
/* Defer the processing of the issue PLOGI until after the * outstanding UNREG_RPI mbox command completes, unless we * are going offline. This logic does not apply for Fabric DIDs
*/ if ((test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) &&
((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
!test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "4110 Issue PLOGI x%x deferred " "on NPort x%x rpi x%x flg x%lx Data:" " x%px\n",
ndlp->nlp_defer_did, ndlp->nlp_DID,
ndlp->nlp_rpi, ndlp->nlp_flag, ndlp);
/* We can only defer 1st PLOGI */ if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
ndlp->nlp_defer_did = did; return 0;
}
/* For PLOGI request, remainder of payload is service parameters */
*((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
pcmd += sizeof(uint32_t);
memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
sp = (struct serv_parm *) pcmd;
/* * If we are a N-port connected to a Fabric, fix-up paramm's so logins * to device on remote loops work.
*/ if (test_bit(FC_FABRIC, &vport->fc_flag) &&
!test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
sp->cmn.altBbCredit = 1;
if (sp->cmn.fcphLow < FC_PH_4_3)
sp->cmn.fcphLow = FC_PH_4_3;
if (sp->cmn.fcphHigh < FC_PH3)
sp->cmn.fcphHigh = FC_PH3;
/* If our firmware supports this feature, convey that * information to the target using the vendor specific field.
*/ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
sp->cmn.valid_vendor_ver_level = 1;
sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
}
ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (ret) {
lpfc_els_free_iocb(phba, elsiocb);
lpfc_nlp_put(ndlp); return 1;
}
return 0;
}
/** * lpfc_cmpl_els_prli - Completion callback function for prli * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for a Process Login * (PRLI) ELS command. The PRLI response IOCB status is checked for error * status. If there is error status reported, PRLI retry shall be attempted * by invoking the lpfc_els_retry() routine. Otherwise, the state * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this * ndlp to mark the PRLI completion.
**/ staticvoid
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp; char *mode;
u32 ulp_status;
u32 ulp_word4; bool release_node = false;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->rsp_iocb = rspiocb;
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto out;
if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ goto out;
}
/* If we don't send GFT_ID to Fabric, a PRLI error * could be expected.
*/ if (test_bit(FC_FABRIC, &vport->fc_flag) ||
vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)
mode = KERN_WARNING; else
mode = KERN_INFO;
/* Do not call DSM for lpfc_els_abort'ed ELS cmds */ if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
/* The following condition catches an inflight transition * mismatch typically caused by an RSCN. Skip any * processing to allow recovery.
*/ if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) ||
(ndlp->nlp_state == NLP_STE_NPR_NODE &&
test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, "2784 PRLI cmpl: Allow Node recovery " "DID x%06x nstate x%x nflag x%lx\n",
ndlp->nlp_DID, ndlp->nlp_state,
ndlp->nlp_flag); goto out;
}
/* * For P2P topology, retain the node so that PLOGI can be * attempted on it again.
*/ if (test_bit(FC_PT2PT, &vport->fc_flag)) goto out;
/* As long as this node is not registered with the SCSI * or NVMe transport and no other PRLIs are outstanding, * it is no longer an active node. Otherwise devloss * handles the final cleanup.
*/
spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
!ndlp->fc4_prli_sent) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else { /* Good status, call state machine. However, if another * PRLI is outstanding, don't call the state machine * because final disposition to Mapped or Unmapped is * completed there.
*/
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_PRLI);
}
/** * lpfc_issue_els_prli - Issue a prli iocb command for a vport * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues a Process Login (PRLI) ELS command for the * @vport. The PRLI service parameters are set up in the payload of the * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine * is put to the IOCB completion callback func field before invoking the * routine lpfc_sli_issue_iocb() to send out PRLI command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the PRLI ELS command. * * Return code * 0 - successfully issued prli iocb command for @vport * 1 - failed to issue prli iocb command for @vport
**/ int
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{ int rc = 0; struct lpfc_hba *phba = vport->phba;
PRLI *npr; struct lpfc_nvme_prli *npr_nvme; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
u32 local_nlp_type, elscmd;
/* * If we are in RSCN mode, the FC4 types supported from a * previous GFT_ID command may not be accurate. So, if we * are a NVME Initiator, always look for the possibility of * the remote NPort beng a NVME Target.
*/ if (phba->sli_rev == LPFC_SLI_REV4 &&
test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
vport->nvmei_support)
ndlp->nlp_fc4_type |= NLP_FC4_NVME;
local_nlp_type = ndlp->nlp_fc4_type;
/* This routine will issue 1 or 2 PRLIs, so zero all the ndlp * fields here before any of them can complete.
*/
ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
clear_bit(NLP_FIRSTBURST, &ndlp->nlp_flag);
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
ndlp->nvme_fb_size = 0;
/* For PRLI request, remainder of payload is service parameters */
memset(pcmd, 0, cmdsize);
if (local_nlp_type & NLP_FC4_FCP) { /* Remainder of payload is FCP PRLI parameter page. * Note: this data structure is defined as * BE/LE in the structure definition so no * byte swap call is made.
*/
*((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
pcmd += sizeof(uint32_t);
npr = (PRLI *)pcmd;
/* * If our firmware version is 3.20 or later, * set the following bits for FC-TAPE support.
*/ if (phba->vpd.rev.feaLevelHigh >= 0x02) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->estabImagePair = 1;
npr->readXferRdyDis = 1; if (vport->cfg_first_burst_size)
npr->writeXferRdyDis = 1;
/* For FCP support */
npr->prliType = PRLI_FCP_TYPE;
npr->initiatorFunc = 1;
elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
/* Remove FCP type - processed. */
local_nlp_type &= ~NLP_FC4_FCP;
} elseif (local_nlp_type & NLP_FC4_NVME) { /* Remainder of payload is NVME PRLI parameter page. * This data structure is the newer definition that * uses bf macros so a byte swap is required.
*/
*((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
pcmd += sizeof(uint32_t);
npr_nvme = (struct lpfc_nvme_prli *)pcmd;
bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ if (phba->nsler) {
bf_set(prli_nsler, npr_nvme, 1);
bf_set(prli_conf, npr_nvme, 1);
}
/* Only initiators request first burst. */ if ((phba->cfg_nvme_enable_fb) &&
!phba->nvmet_support)
bf_set(prli_fba, npr_nvme, 1);
/* The vport counters are used for lpfc_scan_finished, but * the ndlp is used to track outstanding PRLIs for different * FC4 types.
*/
set_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
spin_lock_irq(&ndlp->lock);
vport->fc_prli_sent++;
ndlp->fc4_prli_sent++;
spin_unlock_irq(&ndlp->lock);
/* The driver supports 2 FC4 types. Make sure * a PRLI is issued for all types before exiting.
*/ if (phba->sli_rev == LPFC_SLI_REV4 &&
local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) goto send_next_prli; else return 0;
}
/** * lpfc_rscn_disc - Perform rscn discovery for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine performs Registration State Change Notification (RSCN) * discovery for a @vport. If the @vport's node port recovery count is not * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all * the nodes that need recovery. If none of the PLOGI were needed through * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be * invoked to check and handle possible more RSCN came in during the period * of processing the current ones.
**/ staticvoid
lpfc_rscn_disc(struct lpfc_vport *vport)
{
lpfc_can_disctmo(vport);
/* RSCN discovery */ /* go thru NPR nodes and issue ELS PLOGIs */ if (atomic_read(&vport->fc_npr_cnt)) if (lpfc_els_disc_plogi(vport)) return;
lpfc_end_rscn(vport);
}
/** * lpfc_adisc_done - Complete the adisc phase of discovery * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. * * This function is called when the final ADISC is completed during discovery. * This function handles clearing link attention or issuing reg_vpi depending * on whether npiv is enabled. This function also kicks off the PLOGI phase of * discovery. * This function is called with no locks held.
**/ staticvoid
lpfc_adisc_done(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
/* * For NPIV, cmpl_reg_vpi will set port_state to READY, * and continue discovery.
*/ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
(phba->sli_rev < LPFC_SLI_REV4)) {
/* * If link is down, clear_la and reg_vpi will be done after * flogi following a link up event
*/ if (!lpfc_is_link_up(phba)) return;
/* The ADISCs are complete. Doesn't matter if they * succeeded or failed because the ADISC completion * routine guarantees to call the state machine and * the RPI is either unregistered (failed ADISC response) * or the RPI is still valid and the node is marked * mapped for a target. The exchanges should be in the * correct state. This code is specific to SLI3.
*/
lpfc_issue_clear_la(phba, vport);
lpfc_issue_reg_vpi(phba, vport); return;
} /* * For SLI2, we need to set port_state to READY * and continue discovery.
*/ if (vport->port_state < LPFC_VPORT_READY) { /* If we get here, there is nothing to ADISC */
lpfc_issue_clear_la(phba, vport); if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
vport->num_disc_nodes = 0; /* go thru NPR list, issue ELS PLOGIs */ if (atomic_read(&vport->fc_npr_cnt))
lpfc_els_disc_plogi(vport); if (!vport->num_disc_nodes) {
clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
vport->port_state = LPFC_VPORT_READY;
} else
lpfc_rscn_disc(vport);
}
/** * lpfc_more_adisc - Issue more adisc as needed * @vport: pointer to a host virtual N_Port data structure. * * This routine determines whether there are more ndlps on a @vport * node list need to have Address Discover (ADISC) issued. If so, it will * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's * remaining nodes which need to have ADISC sent.
**/ void
lpfc_more_adisc(struct lpfc_vport *vport)
{ if (vport->num_disc_nodes)
vport->num_disc_nodes--; /* Continue discovery with <num_disc_nodes> ADISCs to go */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0210 Continue discovery with %d ADISCs to go " "Data: x%x x%lx x%x\n",
vport->num_disc_nodes,
atomic_read(&vport->fc_adisc_cnt),
vport->fc_flag, vport->port_state); /* Check to see if there are more ADISCs to be sent */ if (test_bit(FC_NLP_MORE, &vport->fc_flag)) {
lpfc_set_disctmo(vport); /* go thru NPR nodes and issue any remaining ELS ADISCs */
lpfc_els_disc_adisc(vport);
} if (!vport->num_disc_nodes)
lpfc_adisc_done(vport); return;
}
/** * lpfc_cmpl_els_adisc - Completion callback function for adisc * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the Address Discover * (ADISC) command. It first checks to see whether link went down during * the discovery process. If so, the node will be marked as node port * recovery for issuing discover IOCB by the link attention handler and * exit. Otherwise, the response status is checked. If error was reported * in the response status, the ADISC command shall be retried by invoking * the lpfc_els_retry() routine. Otherwise, if no error was reported in * the response status, the state machine is invoked to set transition * with respect to NLP_EVT_CMPL_ADISC event.
**/ staticvoid
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp; struct lpfc_nodelist *ndlp; bool disc;
u32 ulp_status, ulp_word4, tmo, iotag; bool release_node = false;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->rsp_iocb = rspiocb;
/* Since ndlp can be freed in the disc state machine, note if this node * is being used during discovery.
*/
disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag); /* ADISC completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0104 ADISC completes to NPort x%x " "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
ndlp->nlp_DID, iotag,
ulp_status, ulp_word4,
tmo, disc, vport->num_disc_nodes);
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); goto out;
}
if (ulp_status) { /* Check for retry */ if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { /* ELS command is being retried */ if (disc) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
lpfc_set_disctmo(vport);
} goto out;
} /* Warn ADISC status */
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2755 ADISC DID:%06X Status:x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
/* As long as this node is not registered with the SCSI or NVMe * transport, it is no longer an active node. Otherwise * devloss handles the final cleanup.
*/
spin_lock_irq(&ndlp->lock); if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag); if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
release_node = true;
}
spin_unlock_irq(&ndlp->lock);
if (release_node)
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
} else /* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_CMPL_ADISC);
/* Check to see if there are more ADISCs to be sent */ if (disc && vport->num_disc_nodes)
lpfc_more_adisc(vport);
out:
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
}
/** * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine issues an Address Discover (ADISC) for an @ndlp on a * @vport. It prepares the payload of the ADISC ELS command, updates the * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine * to issue the ADISC ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the ADISC ELS command. * * Return code * 0 - successfully issued adisc * 1 - failed to issue adisc
**/ int
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{ int rc = 0; struct lpfc_hba *phba = vport->phba;
ADISC *ap; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
/** * lpfc_cmpl_els_logo - Completion callback function for logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion function for issuing the ELS Logout (LOGO) * command. If no error status was reported from the LOGO response, the * state machine of the associated ndlp shall be invoked for transition with * respect to NLP_EVT_CMPL_LOGO event.
**/ staticvoid
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = ndlp->vport;
IOCB_t *irsp;
uint32_t skip_recovery = 0; int wake_up_waiter = 0;
u32 ulp_status;
u32 ulp_word4;
u32 tmo, iotag;
/* we pass cmdiocb to state machine which needs rspiocb as well */
cmdiocb->rsp_iocb = rspiocb;
/* LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0105 LOGO completes to NPort x%x " "IoTag x%x refcnt %d nflags x%lx xflags x%x " "Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, iotag,
kref_read(&ndlp->kref), ndlp->nlp_flag,
ndlp->fc4_xpt_flags, ulp_status, ulp_word4,
tmo, vport->num_disc_nodes);
if (lpfc_els_chk_latt(vport)) {
skip_recovery = 1; goto out;
}
/* The LOGO will not be retried on failure. A LOGO was * issued to the remote rport and a ACC or RJT or no Answer are * all acceptable. Note the failure and move forward with * discovery. The PLOGI will retry.
*/ if (ulp_status) { /* Warn LOGO status */
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "2756 LOGO, No Retry DID:%06X " "Status:x%x/x%x\n",
ndlp->nlp_DID, ulp_status,
ulp_word4);
if (lpfc_error_lost_link(vport, ulp_status, ulp_word4))
skip_recovery = 1;
}
/* Call state machine. This will unregister the rpi if needed. */
lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
out: /* At this point, the LOGO processing is complete. NOTE: For a * pt2pt topology, we are assuming the NPortID will only change * on link up processing. For a LOGO / PLOGI initiated by the * Initiator, we are assuming the NPortID is not going to change.
*/
if (wake_up_waiter && ndlp->logo_waitq)
wake_up(ndlp->logo_waitq); /* * If the node is a target, the handling attempts to recover the port. * For any other port type, the rpi is unregistered as an implicit * LOGO.
*/ if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
skip_recovery == 0) {
lpfc_cancel_retry_delay_tmo(vport, ndlp);
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
/* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the * driver sends a LOGO to the rport to cleanup. For fabric and * initiator ports cleanup the node as long as it the node is not * register with the transport.
*/ if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
lpfc_disc_state_machine(vport, ndlp, cmdiocb,
NLP_EVT_DEVICE_RM);
}
/* Driver is done with the I/O. */
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp);
}
/** * lpfc_issue_els_logo - Issue a logo to an node on a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine constructs and issues an ELS Logout (LOGO) iocb command * to a remote node, referred by an @ndlp on a @vport. It constructs the * payload of the IOCB, properly sets up the @ndlp state, and invokes the * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the LOGO ELS command. * * Callers of this routine are expected to unregister the RPI first * * Return code * 0 - successfully issued logo * 1 - failed to issue logo
**/ int
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int rc;
if (test_bit(NLP_LOGO_SND, &ndlp->nlp_flag)) return 0;
/** * lpfc_cmpl_els_cmd - Completion callback function for generic els command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is a generic completion callback function for ELS commands. * Specifically, it is the callback function which does not need to perform * any command specific operations. It is currently used by the ELS command * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). * Other than certain debug loggings, this callback function simply invokes the * lpfc_els_chk_latt() routine to check whether link went down during the * discovery process.
**/ staticvoid
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *free_ndlp;
IOCB_t *irsp;
u32 ulp_status, ulp_word4, tmo, did, iotag;
/** * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node. * @vport: pointer to lpfc_vport data structure. * @fc_ndlp: pointer to the fabric controller (0xfffffd) node. * * This routine registers the rpi assigned to the fabric controller * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED * state triggering a registration with the SCSI transport. * * This routine is single out because the fabric controller node * does not receive a PLOGI. This routine is consumed by the * SCR and RDF ELS commands. Callers are expected to qualify * with SLI4 first.
**/ staticint
lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
{ int rc; struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ns_ndlp;
LPFC_MBOXQ_t *mbox;
if (test_bit(NLP_RPI_REGISTERED, &fc_ndlp->nlp_flag)) return 0;
ns_ndlp = lpfc_findnode_did(vport, NameServer_DID); if (!ns_ndlp) return -ENODEV;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
__func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
ns_ndlp->nlp_state); if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) return -ENODEV;
/** * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is a generic completion callback function for Discovery ELS cmd. * Currently used by the ELS command issuing routines for the ELS State Change * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf(). * These commands will be retried once only for ELS timeout errors.
**/ staticvoid
lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp; struct lpfc_els_rdf_rsp *prdf; struct lpfc_dmabuf *pcmd, *prsp;
u32 *pdata;
u32 cmd; struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
u32 ulp_status, ulp_word4, tmo, did, iotag;
/* Only 1 retry for ELS Timeout only */ if (ulp_status == IOSTAT_LOCAL_REJECT &&
((ulp_word4 & IOERR_PARAM_MASK) ==
IOERR_SEQUENCE_TIMEOUT)) {
cmdiocb->retry++; if (cmdiocb->retry <= 1) { switch (cmd) { case ELS_CMD_SCR:
lpfc_issue_els_scr(vport, cmdiocb->retry); break; case ELS_CMD_EDC:
lpfc_issue_els_edc(vport, cmdiocb->retry); break; case ELS_CMD_RDF:
lpfc_issue_els_rdf(vport, cmdiocb->retry); break;
} goto out;
}
phba->fc_stat.elsRetryExceeded++;
} if (cmd == ELS_CMD_EDC) { /* must be called before checking uplStatus and returning */
lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb); return;
} if (ulp_status) { /* ELS discovery cmd completes with error */
lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, "4203 ELS cmd x%x error: x%x x%X\n", cmd,
ulp_status, ulp_word4); goto out;
}
/* The RDF response doesn't have any impact on the running driver * but the notification descriptors are dumped here for support.
*/ if (cmd == ELS_CMD_RDF) { int i;
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out;
prdf = (struct lpfc_els_rdf_rsp *)prsp->virt; if (!prdf) goto out; if (!lpfc_is_els_acc_rsp(prsp)) goto out;
for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
lpfc_printf_vlog(vport, KERN_INFO,
LOG_ELS | LOG_CGN_MGMT, "4677 Fabric RDF Notification Grant " "Data: 0x%08x Reg: %x %x\n",
be32_to_cpu(
prdf->reg_d1.desc_tags[i]),
phba->cgn_reg_signal,
phba->cgn_reg_fpin);
}
out: /* Check to see if link went down during discovery */
lpfc_els_chk_latt(vport);
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
}
/** * lpfc_issue_els_scr - Issue a scr to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command IOCB. * * This routine issues a State Change Request (SCR) to a fabric node * on a @vport. The remote node is Fabric Controller (0xfffffd). It * first search the @vport node list to find the matching ndlp. If no such * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() * routine is invoked to send the SCR IOCB. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the SCR ELS command. * * Return code * 0 - Successfully issued scr command * 1 - Failed to issue scr command
**/ int
lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
{ int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; struct lpfc_nodelist *ndlp;
cmdsize = (sizeof(uint32_t) + sizeof(SCR));
ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); if (!ndlp) {
ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); if (!ndlp) return 1;
lpfc_enqueue_node(vport, ndlp);
}
/** * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric) * or the other nport (pt2pt). * @vport: pointer to a host virtual N_Port data structure. * @retry: number of retries to the command IOCB. * * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD) * when connected to a fabric, or to the remote port when connected * in point-to-point mode. When sent to the Fabric Controller, it will * replay the RSCN to registered recipients. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RSCN ELS command. * * Return code * 0 - Successfully issued RSCN command * 1 - Failed to issue RSCN command
**/ int
lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
{ int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp; struct { struct fc_els_rscn rscn; struct fc_els_rscn_page portid;
} *event;
uint32_t nportid;
uint16_t cmdsize = sizeof(*event);
/* Not supported for private loop */ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
!test_bit(FC_PUBLIC_LOOP, &vport->fc_flag)) return 1;
if (test_bit(FC_PT2PT, &vport->fc_flag)) { /* find any mapped nport - that would be the other nport */
ndlp = lpfc_findnode_mapped(vport); if (!ndlp) return 1;
} else {
nportid = FC_FID_FCTRL; /* find the fabric controller node */
ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) { /* if one didn't exist, make one */
ndlp = lpfc_nlp_init(vport, nportid); if (!ndlp) return 1;
lpfc_enqueue_node(vport, ndlp);
}
}
/** * lpfc_issue_els_farpr - Issue a farp to an node on a vport * @vport: pointer to a host virtual N_Port data structure. * @nportid: N_Port identifier to the remote node. * @retry: number of retries to the command IOCB. * * This routine issues a Fibre Channel Address Resolution Response * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) * is passed into the function. It first search the @vport node list to find * the matching ndlp. If no such ndlp is found, a new ndlp shall be created * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FARPR ELS command. * * Return code * 0 - Successfully issued farpr command * 1 - Failed to issue farpr command
**/ staticint
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
{ int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb;
FARP *fp;
uint8_t *pcmd;
uint32_t *lp;
uint16_t cmdsize; struct lpfc_nodelist *ondlp; struct lpfc_nodelist *ndlp;
cmdsize = (sizeof(uint32_t) + sizeof(FARP));
ndlp = lpfc_findnode_did(vport, nportid); if (!ndlp) {
ndlp = lpfc_nlp_init(vport, nportid); if (!ndlp) return 1;
lpfc_enqueue_node(vport, ndlp);
}
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the release of * the node.
*/
lpfc_els_free_iocb(phba, elsiocb);
lpfc_nlp_put(ndlp); return 1;
} /* This will cause the callback-function lpfc_cmpl_els_cmd to * trigger the release of the node.
*/ /* Don't release reference count as RDF is likely outstanding */ return 0;
}
/** * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric. * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command IOCB. * * This routine issues an ELS RDF to the Fabric Controller to register * for diagnostic functions. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RDF ELS command. * * Return code * 0 - Successfully issued rdf command * 1 - Failed to issue rdf command
**/ int
lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct lpfc_els_rdf_req *prdf; struct lpfc_nodelist *ndlp;
uint16_t cmdsize; int rc;
cmdsize = sizeof(*prdf);
ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); if (!ndlp) {
ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); if (!ndlp) return -ENODEV;
lpfc_enqueue_node(vport, ndlp);
}
/* RDF ELS is not required on an NPIV VN_Port. */ if (vport->port_type == LPFC_NPIV_PORT) return -EACCES;
/** * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * A received RDF implies a possible change to fabric supported diagnostic * functions. This routine sends LS_ACC and then has the Nx_Port issue a new * RDF request to reregister for supported diagnostic functions. * * Return code * 0 - Success * -EIO - Failed to process received RDF
**/ staticint
lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ /* Send LS_ACC */ if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "1623 Failed to RDF_ACC from x%x for x%x\n",
ndlp->nlp_DID, vport->fc_myDID); return -EIO;
}
/* Issue new RDF for reregistering */ if (lpfc_issue_els_rdf(vport, 0)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "2623 Failed to re register RDF for x%x\n",
vport->fc_myDID); return -EIO;
}
return 0;
}
/** * lpfc_least_capable_settings - helper function for EDC rsp processing * @phba: pointer to lpfc hba data structure. * @pcgd: pointer to congestion detection descriptor in EDC rsp. * * This helper routine determines the least capable setting for * congestion signals, signal freq, including scale, from the * congestion detection descriptor in the EDC rsp. The routine * sets @phba values in preparation for a set_featues mailbox.
**/ staticvoid
lpfc_least_capable_settings(struct lpfc_hba *phba, struct fc_diag_cg_sig_desc *pcgd)
{
u32 rsp_sig_cap = 0, drv_sig_cap = 0;
u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
/* Get rsp signal and frequency capabilities. */
rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
/* If the Fport does not support signals. Set FPIN only */ if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED) goto out_no_support;
/* Apply the xmt scale to the xmt cycle to get the correct frequency. * Adapter default is 100 millisSeconds. Convert all xmt cycle values * to milliSeconds.
*/ switch (rsp_sig_freq_scale) { case EDC_CG_SIGFREQ_SEC:
rsp_sig_freq_cyc *= MSEC_PER_SEC; break; case EDC_CG_SIGFREQ_MSEC:
rsp_sig_freq_cyc = 1; break; default: goto out_no_support;
}
/** * lpfc_cmpl_els_edc - Completion callback function for EDC * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for issuing the Exchange * Diagnostic Capabilities (EDC) command. The driver issues an EDC to * notify the FPort of its Congestion and Link Fault capabilities. This * routine parses the FPort's response and decides on the least common * values applicable to both FPort and NPort for Warnings and Alarms that * are communicated via hardware signals.
**/ staticvoid
lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{
IOCB_t *irsp_iocb; struct fc_els_edc_resp *edc_rsp; struct fc_tlv_desc *tlv; struct fc_diag_cg_sig_desc *pcgd; struct fc_diag_lnkflt_desc *plnkflt; struct lpfc_dmabuf *pcmd, *prsp; constchar *dtag_nm;
u32 *pdata, dtag; int desc_cnt = 0, bytes_remain; bool rcv_cap_desc = false; struct lpfc_nodelist *ndlp;
u32 ulp_status, ulp_word4, tmo, did, iotag;
/* ELS cmd tag <ulpIoTag> completes */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
iotag, ulp_status, ulp_word4, tmo);
pcmd = cmdiocb->cmd_dmabuf; if (!pcmd) goto out;
pdata = (u32 *)pcmd->virt; if (!pdata) goto out;
/* Need to clear signal values, send features MB and RDF with FPIN. */ if (ulp_status) goto out;
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); if (!prsp) goto out;
edc_rsp = prsp->virt; if (!edc_rsp) goto out;
/* ELS cmd tag <ulpIoTag> completes */
lpfc_printf_log(phba, KERN_INFO,
LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "4676 Fabric EDC Rsp: " "0x%02x, 0x%08x\n",
edc_rsp->acc_hdr.la_cmd,
be32_to_cpu(edc_rsp->desc_list_len));
if (!lpfc_is_els_acc_rsp(prsp)) goto out;
/* * Payload length in bytes is the response descriptor list * length minus the 12 bytes of Link Service Request * Information descriptor in the reply.
*/
bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) - sizeof(struct fc_els_lsri_desc); if (bytes_remain <= 0) goto out;
tlv = edc_rsp->desc;
/* * cycle through EDC diagnostic descriptors to find the * congestion signaling capability descriptor
*/ while (bytes_remain) { if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "6461 Truncated TLV hdr on " "Diagnostic descriptor[%d]\n",
desc_cnt); goto out;
}
/* Check to see if link went down during discovery */
lpfc_els_chk_latt(phba->pport);
lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, "EDC Cmpl: did:x%x refcnt %d",
ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp);
}
/* We are assuming cgd was zero'ed before calling this routine */
/* Configure the congestion detection capability */
cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
/* Descriptor len doesn't include the tag or len fields. */
cgd->desc_len = cpu_to_be32(
FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
/* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. * xmt_signal_frequency.count already set to 0. * xmt_signal_frequency.units already set to 0.
*/
if (phba->cmf_active_mode == LPFC_CFG_OFF) { /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. * rcv_signal_frequency.count already set to 0. * rcv_signal_frequency.units already set to 0.
*/
phba->cgn_sig_freq = 0; return;
} switch (phba->cgn_reg_signal) { case EDC_CG_SIG_WARN_ONLY:
cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY); break; case EDC_CG_SIG_WARN_ALARM:
cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM); break; default: /* rcv_signal_capability left 0 thus no support */ break;
}
/* We start negotiation with lpfc_fabric_cgn_frequency, after * the completion we settle on the higher frequency.
*/
cgd->rcv_signal_frequency.count =
cpu_to_be16(lpfc_fabric_cgn_frequency);
cgd->rcv_signal_frequency.units =
cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
}
staticbool
lpfc_link_is_lds_capable(struct lpfc_hba *phba)
{ if (!(phba->lmt & LMT_64Gb)) returnfalse; if (phba->sli_rev != LPFC_SLI_REV4) returnfalse;
if (phba->sli4_hba.conf_trunk) { if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G) returntrue;
} elseif (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) { returntrue;
} returnfalse;
}
/** * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric. * @vport: pointer to a host virtual N_Port data structure. * @retry: retry counter for the command iocb. * * This routine issues an ELS EDC to the F-Port Controller to communicate * this N_Port's support of hardware signals in its Congestion * Capabilities Descriptor. * * Note: This routine does not check if one or more signals are * set in the cgn_reg_signal parameter. The caller makes the * decision to enforce cgn_reg_signal as nonzero or zero depending * on the conditions. During Fabric requests, the driver * requires cgn_reg_signals to be nonzero. But a dynamic request * to set the congestion mode to OFF from Monitor or Manage * would correctly issue an EDC with no signals enabled to * turn off switch functionality and then update the FW. * * Return code * 0 - Successfully issued edc command * 1 - Failed to issue edc command
**/ int
lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb; struct fc_els_edc *edc_req; struct fc_tlv_desc *tlv;
u16 cmdsize; struct lpfc_nodelist *ndlp;
u8 *pcmd = NULL;
u32 cgn_desc_size, lft_desc_size; int rc;
if (vport->port_type == LPFC_NPIV_PORT) return -EACCES;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, "Issue EDC: did:x%x refcnt %d",
ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); if (rc == IOCB_ERROR) { /* The additional lpfc_nlp_put will cause the following * lpfc_els_free_iocb routine to trigger the rlease of * the node.
*/
lpfc_els_free_iocb(phba, elsiocb);
lpfc_nlp_put(ndlp); goto try_rdf;
} return 0;
try_rdf:
phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
rc = lpfc_issue_els_rdf(vport, 0); return rc;
}
/** * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry * @vport: pointer to a host virtual N_Port data structure. * @nlp: pointer to a node-list data structure. * * This routine cancels the timer with a delayed IOCB-command retry for * a @vport's @ndlp. It stops the timer for the delayed function retrial and * removes the ELS retry event if it presents. In addition, if the * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB * commands are sent for the @vport's nodes that require issuing discovery * ADISC.
**/ void
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
{ struct lpfc_work_evt *evtp;
if (!test_and_clear_bit(NLP_DELAY_TMO, &nlp->nlp_flag)) return;
timer_delete_sync(&nlp->nlp_delayfunc);
nlp->nlp_last_elscmd = 0; if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
list_del_init(&nlp->els_retry_evt.evt_listp); /* Decrement nlp reference count held for the delayed retry */
evtp = &nlp->els_retry_evt;
lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
} if (test_and_clear_bit(NLP_NPR_2B_DISC, &nlp->nlp_flag)) { if (vport->num_disc_nodes) { if (vport->port_state < LPFC_VPORT_READY) { /* Check if there are more ADISCs to be sent */
lpfc_more_adisc(vport);
} else { /* Check if there are more PLOGIs to be sent */
lpfc_more_plogi(vport); if (vport->num_disc_nodes == 0) {
clear_bit(FC_NDISC_ACTIVE,
&vport->fc_flag);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
}
} return;
}
/** * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer * @t: pointer to the timer function associated data (ndlp). * * This routine is invoked by the ndlp delayed-function timer to check * whether there is any pending ELS retry event(s) with the node. If not, it * simply returns. Otherwise, if there is at least one ELS delayed event, it * adds the delayed events to the HBA work list and invokes the * lpfc_worker_wake_up() routine to wake up worker thread to process the * event. Note that lpfc_nlp_get() is called before posting the event to * the work list to hold reference count of ndlp so that it guarantees the * reference to ndlp will still be available when the worker thread gets * to the event associated with the ndlp.
**/ void
lpfc_els_retry_delay(struct timer_list *t)
{ struct lpfc_nodelist *ndlp = timer_container_of(ndlp, t,
nlp_delayfunc); struct lpfc_vport *vport = ndlp->vport; struct lpfc_hba *phba = vport->phba; unsignedlong flags; struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
/* Hold a node reference for outstanding queued work */ if (!lpfc_nlp_get(ndlp)) return;
spin_lock_irqsave(&phba->hbalock, flags); if (!list_empty(&evtp->evt_listp)) {
spin_unlock_irqrestore(&phba->hbalock, flags);
lpfc_nlp_put(ndlp); return;
}
/** * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function * @ndlp: pointer to a node-list data structure. * * This routine is the worker-thread handler for processing the @ndlp delayed * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves * the last ELS command from the associated ndlp and invokes the proper ELS * function according to the delayed ELS command to retry the command.
**/ void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{ struct lpfc_vport *vport = ndlp->vport;
uint32_t cmd, retry;
if (!test_and_clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag)) return;
/* * If a discovery event readded nlp_delayfunc after timer * firing and before processing the timer, cancel the * nlp_delayfunc.
*/
timer_delete_sync(&ndlp->nlp_delayfunc);
retry = ndlp->nlp_retry;
ndlp->nlp_retry = 0;
switch (cmd) { case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(vport, ndlp, retry); break; case ELS_CMD_PLOGI: if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
} break; case ELS_CMD_ADISC: if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
} break; case ELS_CMD_PRLI: case ELS_CMD_NVMEPRLI: if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
} break; case ELS_CMD_LOGO: if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
} break; case ELS_CMD_FDISC: if (!test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
lpfc_issue_els_fdisc(vport, ndlp, retry); break;
} return;
}
/** * lpfc_link_reset - Issue link reset * @vport: pointer to a virtual N_Port data structure. * * This routine performs link reset by sending INIT_LINK mailbox command. * For SLI-3 adapter, link attention interrupt is enabled before issuing * INIT_LINK mailbox command. * * Return code * 0 - Link reset initiated successfully * 1 - Failed to initiate link reset
**/ int
lpfc_link_reset(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
uint32_t control; int rc;
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "2851 Attempt link reset\n");
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) {
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "2852 Failed to allocate mbox memory"); return 1;
}
/* Enable Link attention interrupts */ if (phba->sli_rev <= LPFC_SLI_REV3) {
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag |= LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(&phba->hbalock);
}
/** * lpfc_els_retry - Make retry decision on an els command iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine makes a retry decision on an ELS command IOCB, which has * failed. The following ELS IOCBs use this function for retrying the command * when previously issued command responsed with error status: FLOGI, PLOGI, * PRLI, ADISC and FDISC. Based on the ELS command type and the * returned error status, it makes the decision whether a retry shall be * issued for the command, and whether a retry shall be made immediately or * delayed. In the former case, the corresponding ELS command issuing-function * is called to retry the command. In the later case, the ELS command shall * be posted to the ndlp delayed event and delayed function timer set to the * ndlp for the delayed command issusing. * * Return code * 0 - No retry of els command is made * 1 - Immediate or delayed retry of els command is made
**/ staticint
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport; union lpfc_wqe128 *irsp = &rspiocb->wqe; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
uint32_t *elscmd; struct ls_rjt stat; int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; int logerr = 0;
uint32_t cmd = 0;
uint32_t did; int link_reset = 0, rc;
u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
u32 ulp_word4 = get_job_word4(phba, rspiocb);
u8 rsn_code_exp = 0;
/* Note: cmd_dmabuf may be 0 for internal driver abort * of delays ELS command.
*/
if (ndlp)
did = ndlp->nlp_DID; else { /* We should only hit this case for retrying PLOGI */
did = get_job_els_rsp64_did(phba, rspiocb);
ndlp = lpfc_findnode_did(vport, did); if (!ndlp && (cmd != ELS_CMD_PLOGI)) return 0;
}
switch (ulp_status) { case IOSTAT_FCP_RSP_ERROR: break; case IOSTAT_REMOTE_STOP: if (phba->sli_rev == LPFC_SLI_REV4) { /* This IO was aborted by the target, we don't * know the rxid and because we did not send the * ABTS we cannot generate and RRQ.
*/
lpfc_set_rrq_active(phba, ndlp,
cmdiocb->sli4_lxritag, 0, 0);
} break; case IOSTAT_LOCAL_REJECT: switch ((ulp_word4 & IOERR_PARAM_MASK)) { case IOERR_LOOP_OPEN_FAILURE: if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
delay = 1000;
retry = 1; break;
case IOERR_NO_RESOURCES:
logerr = 1; /* HBA out of resources */
retry = 1; if (cmdiocb->retry > 100)
delay = 100;
maxretry = 250; break;
case IOERR_ILLEGAL_FRAME:
delay = 100;
retry = 1; break;
case IOERR_INVALID_RPI: if (cmd == ELS_CMD_PLOGI &&
did == NameServer_DID) { /* Continue forever if plogi to */ /* the nameserver fails */
maxretry = 0;
delay = 100;
} elseif (cmd == ELS_CMD_PRLI &&
ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { /* State-command disagreement. The PRLI was * failed with an invalid rpi meaning there * some unexpected state change. Don't retry.
*/
maxretry = 0;
retry = 0; break;
}
retry = 1; break;
case IOERR_SEQUENCE_TIMEOUT: if (cmd == ELS_CMD_PLOGI &&
did == NameServer_DID &&
(cmdiocb->retry + 1) == maxretry) { /* Reset the Link */
link_reset = 1; break;
}
retry = 1;
delay = 100; break; case IOERR_SLI_ABORTED: /* Retry ELS PLOGI command? * Possibly the rport just wasn't ready.
*/ if (cmd == ELS_CMD_PLOGI) { /* No retry if state change */ if (ndlp &&
ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) goto out_retry;
retry = 1;
maxretry = 2;
} break;
} break;
case IOSTAT_NPORT_RJT: case IOSTAT_FABRIC_RJT: if (ulp_word4 & RJT_UNAVAIL_TEMP) {
retry = 1; break;
} break;
case IOSTAT_NPORT_BSY: case IOSTAT_FABRIC_BSY:
logerr = 1; /* Fabric / Remote NPort out of resources */
retry = 1; break;
case IOSTAT_LS_RJT:
stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); /* Added for Vendor specifc support * Just keep retrying for these Rsn / Exp codes
*/ if (test_bit(FC_PT2PT, &vport->fc_flag) &&
cmd == ELS_CMD_NVMEPRLI) { switch (stat.un.b.lsRjtRsnCode) { case LSRJT_UNABLE_TPC: case LSRJT_INVALID_CMD: case LSRJT_LOGICAL_ERR: case LSRJT_CMD_UNSUPPORTED:
lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, "0168 NVME PRLI LS_RJT " "reason %x port doesn't " "support NVME, disabling NVME\n",
stat.un.b.lsRjtRsnCode);
retry = 0;
set_bit(FC_PT2PT_NO_NVME, &vport->fc_flag); goto out_retry;
}
} switch (stat.un.b.lsRjtRsnCode) { case LSRJT_UNABLE_TPC: /* Special case for PRLI LS_RJTs. Recall that lpfc * uses a single routine to issue both PRLI FC4 types. * If the PRLI is rejected because that FC4 type * isn't really supported, don't retry and cause * multiple transport registrations. Otherwise, parse * the reason code/reason code explanation and take the * appropriate action.
*/
lpfc_printf_vlog(vport, KERN_INFO,
LOG_DISCOVERY | LOG_ELS | LOG_NODE, "0153 ELS cmd x%x LS_RJT by x%x. " "RsnCode x%x RsnCodeExp x%x\n",
cmd, did, stat.un.b.lsRjtRsnCode,
stat.un.b.lsRjtRsnCodeExp);
switch (stat.un.b.lsRjtRsnCodeExp) { case LSEXP_CANT_GIVE_DATA: case LSEXP_CMD_IN_PROGRESS: if (cmd == ELS_CMD_PLOGI) {
delay = 1000;
maxretry = 48;
}
retry = 1; break; case LSEXP_REQ_UNSUPPORTED: case LSEXP_NO_RSRC_ASSIGN: /* These explanation codes get no retry. */ if (cmd == ELS_CMD_PRLI ||
cmd == ELS_CMD_NVMEPRLI) break;
fallthrough; default: /* Limit the delay and retry action to a limited * cmd set. There are other ELS commands where * a retry is not expected.
*/ if (cmd == ELS_CMD_PLOGI ||
cmd == ELS_CMD_PRLI ||
cmd == ELS_CMD_NVMEPRLI) {
delay = 1000;
maxretry = lpfc_max_els_tries + 1;
retry = 1;
} break;
}
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(cmd == ELS_CMD_FDISC) &&
(stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0125 FDISC (x%x). " "Fabric out of resources\n",
stat.un.lsRjtError);
lpfc_vport_set_state(vport,
FC_VPORT_NO_FABRIC_RSCS);
} break;
/* An authentication LS_RJT reason code * explanation means some error in the * security settings end-to-end. Reduce * the retry count to allow lpfc to clear * RSCN mode and not race with dev_loss.
*/ if (cmd == ELS_CMD_PLOGI &&
rsn_code_exp == LSEXP_AUTH_REQ)
maxretry = 8;
} elseif (cmd == ELS_CMD_FDISC) { /* FDISC retry policy */
maxretry = 48; if (cmdiocb->retry >= 32)
delay = 1000;
}
retry = 1; break;
case LSRJT_LOGICAL_ERR: /* There are some cases where switches return this * error when they are not ready and should be returning * Logical Busy. We should delay every time.
*/ if (cmd == ELS_CMD_FDISC &&
stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
maxretry = 3;
delay = 1000;
retry = 1;
} elseif (cmd == ELS_CMD_FLOGI &&
stat.un.b.lsRjtRsnCodeExp ==
LSEXP_NOTHING_MORE) {
vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
retry = 1;
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0820 FLOGI (x%x). " "BBCredit Not Supported\n",
stat.un.lsRjtError);
} elseif (cmd == ELS_CMD_PLOGI) {
rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
/* An authentication LS_RJT reason code * explanation means some error in the * security settings end-to-end. Reduce * the retry count to allow lpfc to clear * RSCN mode and not race with dev_loss.
*/ if (rsn_code_exp == LSEXP_AUTH_REQ) {
delay = 1000;
retry = 1;
maxretry = 8;
}
} break;
case LSRJT_PROTOCOL_ERR: if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(cmd == ELS_CMD_FDISC) &&
((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
(stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
) {
lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS, "0122 FDISC (x%x). " "Fabric Detected Bad WWN\n",
stat.un.lsRjtError);
lpfc_vport_set_state(vport,
FC_VPORT_FABRIC_REJ_WWN);
} break; case LSRJT_VENDOR_UNIQUE: if ((stat.un.b.vendorUnique == 0x45) &&
(cmd == ELS_CMD_FLOGI)) { goto out_retry;
} break; case LSRJT_CMD_UNSUPPORTED: /* lpfc nvmet returns this type of LS_RJT when it * receives an FCP PRLI because lpfc nvmet only * support NVME. ELS request is terminated for FCP4 * on this rport.
*/ if (stat.un.b.lsRjtRsnCodeExp ==
LSEXP_REQ_UNSUPPORTED) { if (cmd == ELS_CMD_PRLI) goto out_retry;
} break;
} break;
case IOSTAT_INTERMED_RSP: case IOSTAT_BA_RJT: break;
default: break;
}
if (link_reset) {
rc = lpfc_link_reset(vport); if (rc) { /* Do not give up. Retry PLOGI one more time and attempt * link reset if PLOGI fails again.
*/
retry = 1;
delay = 100; goto out_retry;
} return 1;
}
if (test_bit(FC_UNLOADING, &vport->load_flag))
retry = 0;
out_retry: if (retry) { if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { /* Stop retrying PLOGI and FDISC if in FCF discovery */ if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2849 Stop retry ELS command " "x%x to remote NPORT x%x, " "Data: x%x x%x\n", cmd, did,
cmdiocb->retry, delay); return 0;
}
}
/* Retry ELS command <elsCmd> to remote NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0107 Retry ELS command x%x to remote " "NPORT x%x Data: x%x x%x\n",
cmd, did, cmdiocb->retry, delay);
if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
((ulp_status != IOSTAT_LOCAL_REJECT) ||
((ulp_word4 & IOERR_PARAM_MASK) !=
IOERR_NO_RESOURCES))) { /* Don't reset timer for no resources */
/* If discovery / RSCN timer is running, reset it */ if (timer_pending(&vport->fc_disctmo) ||
test_bit(FC_RSCN_MODE, &vport->fc_flag))
lpfc_set_disctmo(vport);
}
phba->fc_stat.elsXmitRetry++; if (ndlp && delay) {
phba->fc_stat.elsDelayRetry++;
ndlp->nlp_retry = cmdiocb->retry;
/* delay is specified in milliseconds */
mod_timer(&ndlp->nlp_delayfunc,
jiffies + msecs_to_jiffies(delay));
set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
return 1;
} switch (cmd) { case ELS_CMD_FLOGI:
lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_FDISC:
lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PLOGI: if (ndlp) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
}
lpfc_issue_els_plogi(vport, did, cmdiocb->retry); return 1; case ELS_CMD_ADISC:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_PRLI: case ELS_CMD_NVMEPRLI:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); return 1; case ELS_CMD_LOGO:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); return 1;
}
} /* No retry ELS command <elsCmd> to remote NPORT <did> */ if (logerr) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0137 No retry ELS command x%x to remote " "NPORT x%x: Out of Resources: Error:x%x/%x " "IoTag x%x\n",
cmd, did, ulp_status, ulp_word4,
cmdiocb->iotag);
} else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0108 No retry ELS command x%x to remote " "NPORT x%x Retried:%d Error:x%x/%x " "IoTag x%x nflags x%lx\n",
cmd, did, cmdiocb->retry, ulp_status,
ulp_word4, cmdiocb->iotag,
(ndlp ? ndlp->nlp_flag : 0));
} return 0;
}
/** * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb * @phba: pointer to lpfc hba data structure. * @buf_ptr1: pointer to the lpfc DMA buffer data structure. * * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) * associated with a command IOCB back to the lpfc DMA buffer pool. It first * checks to see whether there is a lpfc DMA buffer associated with the * response of the command IOCB. If so, it will be released before releasing * the lpfc DMA buffer associated with the IOCB itself. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
**/ staticint
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{ struct lpfc_dmabuf *buf_ptr;
/* Free the response before processing the command. */ if (!list_empty(&buf_ptr1->list)) {
list_remove_head(&buf_ptr1->list, buf_ptr, struct lpfc_dmabuf,
list);
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
kfree(buf_ptr1); return 0;
}
/** * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl * @phba: pointer to lpfc hba data structure. * @buf_ptr: pointer to the lpfc dma buffer data structure. * * This routine releases the lpfc Direct Memory Access (DMA) buffer * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer * pool. * * Return code * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
**/ staticint
lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
{
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr); return 0;
}
/** * lpfc_els_free_iocb - Free a command iocb and its associated resources * @phba: pointer to lpfc hba data structure. * @elsiocb: pointer to lpfc els command iocb data structure. * * This routine frees a command IOCB and its associated resources. The * command IOCB data structure contains the reference to various associated * resources, these fields must be set to NULL if the associated reference * not present: * cmd_dmabuf - reference to cmd. * cmd_dmabuf->next - reference to rsp * rsp_dmabuf - unused * bpl_dmabuf - reference to bpl * * It first properly decrements the reference count held on ndlp for the * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not * set, it invokes the lpfc_els_free_data() routine to release the Direct * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it * adds the DMA buffer the @phba data structure for the delayed release. * If reference to the Buffer Pointer List (BPL) is present, the * lpfc_els_free_bpl() routine is invoked to release the DMA memory * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is * invoked to release the IOCB data structure back to @phba IOCBQ list. * * Return code * 0 - Success (currently, always return 0)
**/ int
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
{ struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
/* The I/O iocb is complete. Clear the node and first dmbuf */
elsiocb->ndlp = NULL;
/* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */ if (elsiocb->cmd_dmabuf) { if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) { /* Firmware could still be in progress of DMAing * payload, so don't free data buffer till after * a hbeat.
*/
elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
buf_ptr = elsiocb->cmd_dmabuf;
elsiocb->cmd_dmabuf = NULL; if (buf_ptr) {
buf_ptr1 = NULL;
spin_lock_irq(&phba->hbalock); if (!list_empty(&buf_ptr->list)) {
list_remove_head(&buf_ptr->list,
buf_ptr1, struct lpfc_dmabuf,
list);
INIT_LIST_HEAD(&buf_ptr1->list);
list_add_tail(&buf_ptr1->list,
&phba->elsbuf);
phba->elsbuf_cnt++;
}
INIT_LIST_HEAD(&buf_ptr->list);
list_add_tail(&buf_ptr->list, &phba->elsbuf);
phba->elsbuf_cnt++;
spin_unlock_irq(&phba->hbalock);
}
} else {
buf_ptr1 = elsiocb->cmd_dmabuf;
lpfc_els_free_data(phba, buf_ptr1);
elsiocb->cmd_dmabuf = NULL;
}
}
/** * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the Logout (LOGO) * Accept (ACC) Response ELS command. This routine is invoked to indicate * the completion of the LOGO process. If the node has transitioned to NPR, * this routine unregisters the RPI if it is still registered. The * lpfc_els_free_iocb() is invoked to release the IOCB data structure.
**/ staticvoid
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = cmdiocb->vport;
u32 ulp_status, ulp_word4;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, "ACC LOGO cmpl: status:x%x/x%x did:x%x",
ulp_status, ulp_word4, ndlp->nlp_DID); /* ACC to LOGO completes to NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0109 ACC to LOGO completes to NPort x%x refcnt %d " "last els x%x Data: x%lx x%x x%x\n",
ndlp->nlp_DID, kref_read(&ndlp->kref),
ndlp->nlp_last_elscmd, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
/* This clause allows the LOGO ACC to complete and free resources * for the Fabric Domain Controller. It does deliberately skip * the unreg_rpi and release rpi because some fabrics send RDP * requests after logging out from the initiator.
*/ if (ndlp->nlp_type & NLP_FABRIC &&
((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) goto out;
if (ndlp->nlp_state == NLP_STE_NPR_NODE) { if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag))
lpfc_unreg_rpi(vport, ndlp);
/* If came from PRLO, then PRLO_ACC is done. * Start rediscovery now.
*/ if (ndlp->nlp_last_elscmd == ELS_CMD_PRLO) {
set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
}
}
out: /* * The driver received a LOGO from the rport and has ACK'd it. * At this point, the driver is done so release the IOCB
*/
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp);
}
/** * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function for unregister default * RPI (Remote Port Index) mailbox command to the @phba. It simply releases * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and * decrements the ndlp reference count held for this completion callback * function. After that, it invokes the lpfc_drop_node to check * whether it is appropriate to release the node.
**/ void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{ struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
u32 mbx_flag = pmb->mbox_flag;
u32 mbx_cmd = pmb->u.mb.mbxCommand;
/* This ends the default/temporary RPI cleanup logic for this * ndlp and the node and rpi needs to be released. Free the rpi * first on an UNREG_LOGIN and then release the final * references.
*/
clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag); if (mbx_cmd == MBX_UNREG_LOGIN)
clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
lpfc_nlp_put(ndlp);
lpfc_drop_node(ndlp->vport, ndlp);
}
/** * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function for ELS Response IOCB * command. In normal case, this callback function just properly sets the * nlp_flag bitmap in the ndlp data structure, if the mbox command reference * field in the command IOCB is not NULL, the referred mailbox command will * be send out, and then invokes the lpfc_els_free_iocb() routine to release * the IOCB.
**/ staticvoid
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
IOCB_t *irsp;
LPFC_MBOXQ_t *mbox = NULL;
u32 ulp_status, ulp_word4, tmo, did, iotag;
if (!vport) {
lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, "3177 null vport in ELS rsp\n"); goto out;
} if (cmdiocb->context_un.mbox)
mbox = cmdiocb->context_un.mbox;
/* Check to see if link went down during discovery */ if (!ndlp || lpfc_els_chk_latt(vport)) { if (mbox)
lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); goto out;
}
/* Increment reference count to ndlp to hold the * reference to ndlp for the callback function.
*/
mbox->ctx_ndlp = lpfc_nlp_get(ndlp); if (!mbox->ctx_ndlp) goto out_free_mbox;
/* An SLI4 NPIV instance wants to drop the node at this point under * these conditions because it doesn't need the login.
*/ if (phba->sli_rev == LPFC_SLI_REV4 &&
vport && vport->port_type == LPFC_NPIV_PORT &&
!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { /* Drop ndlp if there is no planned or outstanding * issued PRLI. * * In cases when the ndlp is acting as both an initiator * and target function, let our issued PRLI determine * the final ndlp kref drop.
*/
lpfc_drop_node(vport, ndlp);
}
}
/* Release the originating I/O reference. */
lpfc_els_free_iocb(phba, cmdiocb);
lpfc_nlp_put(ndlp); return;
}
/** * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command * @vport: pointer to a host virtual N_Port data structure. * @flag: the els command code to be accepted. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issues an Accept (ACC) response IOCB * command. It uses the @flag to properly set up the IOCB field for the * specific ACC response command to be issued and invokes the * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a * @mbox pointer is passed in, it will be put into the context_un.mbox * field of the IOCB for the completion callback function to issue the * mailbox command to the HBA later when callback is invoked. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the corresponding * response ELS IOCB command. * * Return code * 0 - Successfully issued acc response * 1 - Failed to issue acc response
**/ int
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
LPFC_MBOXQ_t *mbox)
{ struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
IOCB_t *oldcmd; union lpfc_wqe128 *wqe; union lpfc_wqe128 *oldwqe = &oldiocb->wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd; struct serv_parm *sp;
uint16_t cmdsize; int rc;
ELS_PKT *els_pkt_ptr; struct fc_els_rdf_resp *rdf_resp;
/* If our firmware supports this feature, convey that * info to the target using the vendor specific field.
*/ if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
sp->cmn.valid_vendor_ver_level = 1;
sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
sp->un.vv.flags =
cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
}
}
/** * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command * @vport: pointer to a virtual N_Port data structure. * @rejectError: reject response to issue * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * @mbox: pointer to the driver internal queue element for mailbox command. * * This routine prepares and issue an Reject (RJT) response IOCB * command. If a @mbox pointer is passed in, it will be put into the * context_un.mbox field of the IOCB for the completion callback function * to issue to the HBA later. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the reject response * ELS IOCB command. * * Return code * 0 - Successfully issued reject response * 1 - Failed to issue reject response
**/ int
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
LPFC_MBOXQ_t *mbox)
{ int rc; struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd;
IOCB_t *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
/** * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to the original lpfc command iocb data structure. * @ndlp: NPort to where rsp is directed * * This routine issues an EDC ACC RSP to the F-Port Controller to communicate * this N_Port's support of hardware signals in its Congestion * Capabilities Descriptor. * * Return code * 0 - Successfully issued edc rsp command * 1 - Failed to issue edc rsp command
**/ staticint
lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba; struct fc_els_edc_resp *edc_rsp; struct fc_tlv_desc *tlv; struct lpfc_iocbq *elsiocb;
IOCB_t *icmd, *cmd; union lpfc_wqe128 *wqe;
u32 cgn_desc_size, lft_desc_size;
u16 cmdsize;
uint8_t *pcmd; int rc;
/** * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd * @vport: pointer to a virtual N_Port data structure. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine prepares and issues an Accept (ACC) response to Address * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB * and invokes the lpfc_sli_issue_iocb() routine to send out the command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the ADISC Accept response * ELS IOCB command. * * Return code * 0 - Successfully issued acc adisc response * 1 - Failed to issue adisc acc response
**/ int
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba;
ADISC *ap;
IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int rc;
u32 ulp_context;
/** * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd * @vport: pointer to a virtual N_Port data structure. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine prepares and issues an Accept (ACC) response to Process * Login (PRLI) ELS command. It simply prepares the payload of the IOCB * and invokes the lpfc_sli_issue_iocb() routine to send out the command. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the PRLI Accept response * ELS IOCB command. * * Return code * 0 - Successfully issued acc prli response * 1 - Failed to issue acc prli response
**/ int
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba;
PRLI *npr; struct lpfc_nvme_prli *npr_nvme;
lpfc_vpd_t *vpd;
IOCB_t *icmd;
IOCB_t *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
uint32_t prli_fc4_req, *req_payload; struct lpfc_dmabuf *req_buf; int rc;
u32 elsrspcmd, ulp_context;
/* Need the incoming PRLI payload to determine if the ACC is for an * FC4 or NVME PRLI type. The PRLI type is at word 1.
*/
req_buf = oldiocb->cmd_dmabuf;
req_payload = (((uint32_t *)req_buf->virt) + 1);
/* PRLI type payload is at byte 3 for FCP or NVME. */
prli_fc4_req = be32_to_cpu(*req_payload);
prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
prli_fc4_req, *((uint32_t *)req_payload));
/* For PRLI, remainder of payload is PRLI parameter page */
vpd = &phba->vpd;
if (prli_fc4_req == PRLI_FCP_TYPE) { /* * If the remote port is a target and our firmware version * is 3.20 or later, set the following bits for FC-TAPE * support.
*/
npr = (PRLI *) pcmd; if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
(vpd->rev.feaLevelHigh >= 0x02)) {
npr->ConfmComplAllowed = 1;
npr->Retry = 1;
npr->TaskRetryIdReq = 1;
}
npr->acceptRspCode = PRLI_REQ_EXECUTED;
} elseif (prli_fc4_req == PRLI_NVME_TYPE) { /* Respond with an NVME PRLI Type */
npr_nvme = (struct lpfc_nvme_prli *) pcmd;
bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); if (phba->nvmet_support) {
bf_set(prli_tgt, npr_nvme, 1);
bf_set(prli_disc, npr_nvme, 1); if (phba->cfg_nvme_enable_fb) {
bf_set(prli_fba, npr_nvme, 1);
/* TBD. Target mode needs to post buffers * that support the configured first burst * byte size.
*/
bf_set(prli_fb_sz, npr_nvme,
phba->cfg_nvmet_fb_size);
}
} else {
bf_set(prli_init, npr_nvme, 1);
}
/** * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command * @vport: pointer to a virtual N_Port data structure. * @format: rnid command format. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a Request Node Identification Data (RNID) Accept * (ACC) response. It constructs the RNID ACC response command according to * the proper @format and then calls the lpfc_sli_issue_iocb() routine to * issue the response. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function. * * Return code * 0 - Successfully issued acc rnid response * 1 - Failed to issue acc rnid response
**/ staticint
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba;
RNID *rn;
IOCB_t *icmd, *oldcmd; union lpfc_wqe128 *wqe; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int rc;
u32 ulp_context;
/* The accumulated length can exceed the BPL_SIZE. For * now, use this as the limit
*/ if (cmdsize > LPFC_BPL_SIZE)
cmdsize = LPFC_BPL_SIZE;
elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
ndlp->nlp_DID, ELS_CMD_ACC); if (!elsiocb) return 1;
/** * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine issues Address Discover (ADISC) ELS commands to those * N_Ports which are in node port recovery state and ADISC has not been issued * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the * lpfc_issue_els_adisc() routine, the per @vport number of discover count * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC * IOCBs quit for later pick up. On the other hand, after walking through * all the ndlps with the @vport and there is none ADISC IOCB issued, the * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is * no more ADISC need to be sent. * * Return code * The number of N_Ports with adisc issued.
**/ int
lpfc_els_disc_adisc(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp, *next_ndlp; int sentadisc = 0;
/* go thru NPR nodes and issue any remaining ELS ADISCs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) continue;
clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
if (!test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag)) { /* This node was marked for ADISC but was not picked * for discovery. This is possible if the node was * missing in gidft response. * * At time of marking node for ADISC, we skipped unreg * from backend
*/
lpfc_nlp_unreg_node(vport, ndlp);
lpfc_unreg_rpi(vport, ndlp); continue;
}
} if (sentadisc == 0)
clear_bit(FC_NLP_MORE, &vport->fc_flag); return sentadisc;
}
/** * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc * @vport: pointer to a host virtual N_Port data structure. * * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports * which are in node port recovery state, with a @vport. Each time an ELS * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, * the per @vport number of discover count (num_disc_nodes) shall be * incremented. If the num_disc_nodes reaches a pre-configured threshold * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for * later pick up. On the other hand, after walking through all the ndlps with * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC * PLOGI need to be sent. * * Return code * The number of N_Ports with plogi issued.
**/ int
lpfc_els_disc_plogi(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp, *next_ndlp; int sentplogi = 0;
/* go thru NPR nodes and issue any remaining ELS PLOGIs */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag) &&
!test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag) &&
!test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
sentplogi++;
vport->num_disc_nodes++; if (vport->num_disc_nodes >=
vport->cfg_discovery_threads) {
set_bit(FC_NLP_MORE, &vport->fc_flag); break;
}
}
}
desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); if (test_bit(FC_FABRIC, &vport->fc_flag)) {
memcpy(desc->port_names.wwnn, &vport->fabric_nodename, sizeof(desc->port_names.wwnn));
memcpy(desc->port_names.wwpn, &vport->fabric_portname, sizeof(desc->port_names.wwpn));
} else { /* Point to Point */
memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, sizeof(desc->port_names.wwnn));
/* Now that we know the true size of the payload, update the BPL */
bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
bpl->tus.f.bdeSize = len;
bpl->tus.f.bdeFlags = 0;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
free_rdp_context: /* This reference put is for the original unsolicited RDP. If the * prep failed, there is no reference to remove.
*/
lpfc_nlp_put(ndlp);
kfree(rdp_context);
}
/* * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited RDP(Read Diagnostic Parameters) * IOCB. First, the payload of the unsolicited RDP is checked. * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl * gather all data and send RDP response. * * Return code * 0 - Sent the acc response * 1 - Sent the reject response.
*/ staticint
lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd;
uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; struct fc_rdp_req_frame *rdp_req; struct lpfc_rdp_context *rdp_context; union lpfc_wqe128 *cmd = NULL; struct ls_rjt stat;
/** * lpfc_els_rcv_lcb - Process an unsolicited LCB * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. * First, the payload of the unsolicited LCB is checked. * Then based on Subcommand beacon will either turn on or off. * * Return code * 0 - Sent the acc response * 1 - Sent the reject response.
**/ staticint
lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd;
uint8_t *lp; struct fc_lcb_request_frame *beacon; struct lpfc_lcb_context *lcb_context;
u8 state, rjt_err = 0; struct ls_rjt stat;
/** * lpfc_els_flush_rscn - Clean up any rscn activities with a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine cleans up any Registration State Change Notification * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the * @vport together with the host_lock is used to prevent multiple thread * trying to access the RSCN array on a same @vport at the same time.
**/ void
lpfc_els_flush_rscn(struct lpfc_vport *vport)
{ struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; int i;
spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock); return;
} /* Indicate we are walking lpfc_els_flush_rscn on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock);
for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
vport->fc_rscn_id_list[i] = NULL;
}
clear_bit(FC_RSCN_MODE, &vport->fc_flag);
clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
spin_lock_irq(shost->host_lock);
vport->fc_rscn_id_cnt = 0;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport); /* Indicate we are done walking this fc_rscn_id_list */
vport->fc_rscn_flush = 0;
}
/** * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did * @vport: pointer to a host virtual N_Port data structure. * @did: remote destination port identifier. * * This routine checks whether there is any pending Registration State * Configuration Notification (RSCN) to a @did on @vport. * * Return code * None zero - The @did matched with a pending rscn * 0 - not able to match @did with a pending rscn
**/ int
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
{
D_ID ns_did;
D_ID rscn_did;
uint32_t *lp;
uint32_t payload_len, i; struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
ns_did.un.word = did;
/* Never match fabric nodes for RSCNs */ if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) return 0;
/* If we are doing a FULL RSCN rediscovery, match everything */ if (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) return did;
spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock); return 0;
} /* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock); for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
lp = vport->fc_rscn_id_list[i]->virt;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */ while (payload_len) {
rscn_did.un.word = be32_to_cpu(*lp++);
payload_len -= sizeof(uint32_t); switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { case RSCN_ADDRESS_FORMAT_PORT: if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area)
&& (ns_did.un.b.id == rscn_did.un.b.id)) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_AREA: if ((ns_did.un.b.domain == rscn_did.un.b.domain)
&& (ns_did.un.b.area == rscn_did.un.b.area)) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_DOMAIN: if (ns_did.un.b.domain == rscn_did.un.b.domain) goto return_did_out; break; case RSCN_ADDRESS_FORMAT_FABRIC: goto return_did_out;
}
}
} /* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0; return 0;
return_did_out: /* Indicate we are done with walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0; return did;
}
/** * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn * @vport: pointer to a host virtual N_Port data structure. * * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the * state machine for a @vport's nodes that are with pending RSCN (Registration * State Change Notification). * * Return code * 0 - Successful (currently alway return 0)
**/ staticint
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp = NULL, *n;
/* Move all affected nodes by pending RSCNs to NPR state. */
list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) { if (test_bit(FC_UNLOADING, &vport->load_flag)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "1000 %s Unloading set\n",
__func__); return 0;
}
if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
!lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) continue;
/* NVME Target mode does not do RSCN Recovery. */ if (vport->phba->nvmet_support) continue;
/* If we are in the process of doing discovery on this * NPort, let it continue on its own.
*/ switch (ndlp->nlp_state) { case NLP_STE_PLOGI_ISSUE: case NLP_STE_ADISC_ISSUE: case NLP_STE_REG_LOGIN_ISSUE: case NLP_STE_PRLI_ISSUE: case NLP_STE_LOGO_ISSUE: continue;
}
/** * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes an unsolicited RSCN (Registration State Change * Notification) IOCB. First, the payload of the unsolicited RSCN is walked * to invoke fc_host_post_event() routine to the FC transport layer. If the * discover state machine is about to begin discovery, it just accepts the * RSCN and the discovery process will satisfy the RSCN. If this RSCN only * contains N_Port IDs for other vports on this HBA, it just accepts the * RSCN and ignore processing it. If the state machine is in the recovery * state, the fc_rscn_id_list of this @vport is walked and the * lpfc_rscn_recovery_check() routine is invoked to send recovery event for * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() * routine is invoked to handle the RSCN event. * * Return code * 0 - Just sent the acc response * 1 - Sent the acc response and waited for name server completion
**/ staticint
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd;
uint32_t *lp, *datap;
uint32_t payload_len, length, nportid, *cmd; int rscn_cnt; int rscn_id = 0, hba_id = 0; int i, tmo;
payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
payload_len -= sizeof(uint32_t); /* take off word 0 */ /* RSCN received */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0214 RSCN received Data: x%lx x%x x%x x%x\n",
vport->fc_flag, payload_len, *lp,
vport->fc_rscn_id_cnt);
/* Send an RSCN event to the management application */
lpfc_send_rscn_event(vport, cmdiocb);
for (i = 0; i < payload_len/sizeof(uint32_t); i++)
fc_host_post_event(shost, fc_get_event_number(),
FCH_EVT_RSCN, lp[i]);
/* Check if RSCN is coming from a direct-connected remote NPort */ if (test_bit(FC_PT2PT, &vport->fc_flag)) { /* If so, just ACC it, no other action needed for now */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "2024 pt2pt RSCN %08x Data: x%lx x%x\n",
*lp, vport->fc_flag, payload_len);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
/* Check to see if we need to NVME rescan this target * remoteport.
*/ if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
lpfc_nvme_rescan_port(vport, ndlp); return 0;
}
/* If we are about to begin discovery, just ACC the RSCN. * Discovery processing will satisfy it.
*/ if (vport->port_state <= LPFC_NS_QRY) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN ignore: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
/* If this RSCN just contains NPortIDs for other vports on this HBA, * just ACC and ignore it.
*/ if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!(vport->cfg_peer_port_login)) {
i = payload_len;
datap = lp; while (i > 0) {
nportid = *datap++;
nportid = ((be32_to_cpu(nportid)) & Mask_DID);
i -= sizeof(uint32_t);
rscn_id++; if (lpfc_find_vport_by_did(phba, nportid))
hba_id++;
} if (rscn_id == hba_id) { /* ALL NPortIDs in RSCN are on HBA */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0219 Ignore RSCN " "Data: x%lx x%x x%x x%x\n",
vport->fc_flag, payload_len,
*lp, vport->fc_rscn_id_cnt);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN vport: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state,
ndlp->nlp_flag);
spin_lock_irq(shost->host_lock); if (vport->fc_rscn_flush) { /* Another thread is walking fc_rscn_id_list on this vport */
spin_unlock_irq(shost->host_lock);
set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); /* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); return 0;
} /* Indicate we are walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 1;
spin_unlock_irq(shost->host_lock); /* Get the array count after successfully have the token */
rscn_cnt = vport->fc_rscn_id_cnt; /* If we are already processing an RSCN, save the received * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
*/ if (test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN defer: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
set_bit(FC_RSCN_DEFERRED, &vport->fc_flag);
/* Restart disctmo if its already running */ if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
tmo = ((phba->fc_ratov * 3) + 3);
mod_timer(&vport->fc_disctmo,
jiffies + secs_to_jiffies(tmo));
} if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
!test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
set_bit(FC_RSCN_MODE, &vport->fc_flag); if (rscn_cnt) {
cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
} if ((rscn_cnt) &&
(payload_len + length <= LPFC_BPL_SIZE)) {
*cmd &= ELS_CMD_MASK;
*cmd |= cpu_to_be32(payload_len + length);
memcpy(((uint8_t *)cmd) + length, lp,
payload_len);
} else {
vport->fc_rscn_id_list[rscn_cnt] = pcmd;
vport->fc_rscn_id_cnt++; /* If we zero, cmdiocb->cmd_dmabuf, the calling * routine will not try to free it.
*/
cmdiocb->cmd_dmabuf = NULL;
} /* Deferred RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0235 Deferred RSCN " "Data: x%x x%lx x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
} else {
set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag); /* ReDiscovery RSCN */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, "0234 ReDiscovery RSCN " "Data: x%x x%lx x%x\n",
vport->fc_rscn_id_cnt, vport->fc_flag,
vport->port_state);
} /* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0; /* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport); return 0;
}
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV RSCN: did:x%x/ste:x%x flg:x%lx",
ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
set_bit(FC_RSCN_MODE, &vport->fc_flag);
vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; /* Indicate we are done walking fc_rscn_id_list on this vport */
vport->fc_rscn_flush = 0; /* * If we zero, cmdiocb->cmd_dmabuf, the calling routine will * not try to free it.
*/
cmdiocb->cmd_dmabuf = NULL;
lpfc_set_disctmo(vport); /* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); /* send RECOVERY event for ALL nodes that match RSCN payload */
lpfc_rscn_recovery_check(vport); return lpfc_els_handle_rscn(vport);
}
/** * lpfc_els_handle_rscn - Handle rscn for a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine handles the Registration State Configuration Notification * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, * if the ndlp to NameServer exists, a Common Transport (CT) command to the * NameServer shall be issued. If CT command to the NameServer fails to be * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any * RSCN activities with the @vport. * * Return code * 0 - Cleaned up rscn on the @vport * 1 - Wait for plogi to name server before proceed
**/ int
lpfc_els_handle_rscn(struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp; struct lpfc_hba *phba = vport->phba;
/* Ignore RSCN if the port is being torn down. */ if (test_bit(FC_UNLOADING, &vport->load_flag)) {
lpfc_els_flush_rscn(vport); return 0;
}
/* Start timer for RSCN processing */
lpfc_set_disctmo(vport);
/* To process RSCN, first compare RSCN data with NameServer */
vport->fc_ns_retry = 0;
vport->num_disc_nodes = 0;
ndlp = lpfc_findnode_did(vport, NameServer_DID); if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { /* Good ndlp, issue CT Request to NameServer. Need to * know how many gidfts were issued. If none, then just * flush the RSCN. Otherwise, the outstanding requests * need to complete.
*/ if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { if (lpfc_issue_gidft(vport) > 0) return 1;
} elseif (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { if (lpfc_issue_gidpt(vport) > 0) return 1;
} else { return 1;
}
} else { /* Nameserver login in question. Revalidate. */ if (ndlp) {
ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
} else {
ndlp = lpfc_nlp_init(vport, NameServer_DID); if (!ndlp) {
lpfc_els_flush_rscn(vport); return 0;
}
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
}
ndlp->nlp_type |= NLP_FABRIC;
lpfc_issue_els_plogi(vport, NameServer_DID, 0); /* Wait for NameServer login cmpl before we can * continue
*/ return 1;
}
lpfc_els_flush_rscn(vport); return 0;
}
/** * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fabric Login (FLOGI) IOCB received as an ELS * unsolicited event. An unsolicited FLOGI can be received in a point-to- * point topology. As an unsolicited FLOGI should not be received in a loop * mode, any unsolicited FLOGI received in loop mode shall be ignored. The * lpfc_check_sparm() routine is invoked to check the parameters in the * unsolicited FLOGI. If parameters validation failed, the routine * lpfc_els_rsp_reject() shall be called with reject reason code set to * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the * FLOGI shall be compared with the Port WWN of the @vport to determine who * will initiate PLOGI. The higher lexicographical value party shall has * higher priority (as the winning port) and will initiate PLOGI and * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. * * Return code * 0 - Successfully processed the unsolicited flogi * 1 - Failed to process the unsolicited flogi
**/ staticint
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_hba *phba = vport->phba; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
uint32_t *lp = (uint32_t *) pcmd->virt; union lpfc_wqe128 *wqe = &cmdiocb->wqe; struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
uint32_t cmd, did; int rc; unsignedlong fc_flag = 0;
uint32_t port_state = 0;
if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { /* We should never receive a FLOGI in loop mode, ignore it */
did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
/* An FLOGI ELS command <elsCmd> was received from DID <did> in
Loop Mode */
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0113 An FLOGI ELS command x%x was " "received from DID x%x in Loop Mode\n",
cmd, did); return 1;
}
/* If we have the high WWPN we can assign our own * myDID; otherwise, we have to WAIT for a PLOGI * from the remote NPort to find out what it * will be.
*/
vport->fc_myDID = PT2PT_LocalID;
} else {
vport->fc_myDID = PT2PT_RemoteID;
}
/* * The vport state should go to LPFC_FLOGI only * AFTER we issue a FLOGI, not receive one.
*/
spin_lock_irq(shost->host_lock);
fc_flag = vport->fc_flag;
port_state = vport->port_state; /* Acking an unsol FLOGI. Count 1 for link bounce * work-around.
*/
vport->rcv_flogi_cnt++;
spin_unlock_irq(shost->host_lock);
set_bit(FC_PT2PT, &vport->fc_flag);
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3311 Rcv Flogi PS x%x new PS x%x " "fc_flag x%lx new fc_flag x%lx, hba_flag x%lx\n",
port_state, vport->port_state,
fc_flag, vport->fc_flag, phba->hba_flag);
/* * We temporarily set fc_myDID to make it look like we are * a Fabric. This is done just so we end up with the right * did / sid on the FLOGI ACC rsp.
*/
did = vport->fc_myDID;
vport->fc_myDID = Fabric_DID;
/* Defer ACC response until AFTER we issue a FLOGI */ if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) {
phba->defer_flogi_acc.rx_id = bf_get(wqe_ctxt_tag,
&wqe->xmit_els_rsp.wqe_com);
phba->defer_flogi_acc.ox_id = bf_get(wqe_rcvoxid,
&wqe->xmit_els_rsp.wqe_com);
/* This nlp_get is paired with nlp_puts that reset the * defer_flogi_acc.flag back to false. We need to retain * a kref on the ndlp until the deferred FLOGI ACC is * processed or cancelled.
*/
phba->defer_flogi_acc.ndlp = lpfc_nlp_get(ndlp); return 0;
}
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
/* Now lets put fc_myDID back to what its supposed to be */
vport->fc_myDID = did;
return 0;
}
/** * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Request Node Identification Data (RNID) IOCB * received as an ELS unsolicited event. Only when the RNID specified format * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to * Accept (ACC) the RNID ELS command. All the other RNID formats are * rejected by invoking the lpfc_els_rsp_reject() routine. * * Return code * 0 - Successfully processed rnid iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_dmabuf *pcmd;
uint32_t *lp;
RNID *rn; struct ls_rjt stat;
/** * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes a Link Incident Report Registration(LIRR) IOCB * received as an ELS unsolicited event. Currently, this function just invokes * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. * * Return code * 0 - Successfully processed lirr iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct ls_rjt stat;
/** * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB * received as an ELS unsolicited event. A request to RRQ shall only * be accepted if the Originator Nx_Port N_Port_ID or the Responder * Nx_Port N_Port_ID of the target Exchange is the same as the * N_Port_ID of the Nx_Port that makes the request. If the RRQ is * not accepted, an LS_RJT with reason code "Unable to perform * command request" and reason code explanation "Invalid Originator * S_ID" shall be returned. For now, we just unconditionally accept * RRQ from the target.
**/ staticvoid
lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); if (vport->phba->sli_rev == LPFC_SLI_REV4)
lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
}
/** * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function for the MBX_READ_LNK_STAT * mailbox command. This callback function is to actually send the Accept * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It * collects the link statistics from the completion of the MBX_READ_LNK_STAT * mailbox command, constructs the RLS response with the link statistics * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC * response to the RLS. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RLS Accept Response * ELS IOCB command. *
**/ staticvoid
lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{ int rc = 0;
MAILBOX_t *mb;
IOCB_t *icmd; union lpfc_wqe128 *wqe; struct RLS_RSP *rls_rsp;
uint8_t *pcmd; struct lpfc_iocbq *elsiocb; struct lpfc_nodelist *ndlp;
uint16_t oxid;
uint16_t rxid;
uint32_t cmdsize;
u32 ulp_context;
/** * lpfc_els_rcv_rls - Process an unsolicited rls iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Link Status (RLS) IOCB received as an * ELS unsolicited event. It first checks the remote port state. If the * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE * state, it invokes the lpfc_els_rsl_reject() routine to send the reject * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command * for reading the HBA link statistics. It is for the callback function, * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command * to actually sending out RPL Accept (ACC) response. * * Return codes * 0 - Successfully processed rls iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox; struct ls_rjt stat;
u32 ctx = get_job_ulpcontext(phba, cmdiocb);
u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) /* reject the unsolicited RLS request and done with it */ goto reject_out;
/** * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Timout Value (RTV) IOCB received as an * ELS unsolicited event. It first checks the remote port state. If the * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE * state, it invokes the lpfc_els_rsl_reject() routine to send the reject * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout * Value (RTV) unsolicited IOCB event. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RTV Accept Response * ELS IOCB command. * * Return codes * 0 - Successfully processed rtv iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ int rc = 0;
IOCB_t *icmd; union lpfc_wqe128 *wqe; struct lpfc_hba *phba = vport->phba; struct ls_rjt stat; struct RTV_RSP *rtv_rsp;
uint8_t *pcmd; struct lpfc_iocbq *elsiocb;
uint32_t cmdsize;
u32 ulp_context;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) /* reject the unsolicited RTV request and done with it */ goto reject_out;
/* lpfc_issue_els_rrq - Process an unsolicited rrq iocb * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @did: DID of the target. * @rrq: Pointer to the rrq struct. * * Build a ELS RRQ command and send it to the target. If the issue_iocb is * successful, the completion handler will clear the RRQ. * * Return codes * 0 - Successfully sent rrq els iocb. * 1 - Failed to send rrq els iocb.
**/ staticint
lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did, struct lpfc_node_rrq *rrq)
{ struct lpfc_hba *phba = vport->phba; struct RRQ *els_rrq; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize; int ret;
if (!ndlp) return 1;
/* If ndlp is not NULL, we will bump the reference count on it */
cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
ELS_CMD_RRQ); if (!elsiocb) return 1;
pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
/* For RRQ request, remainder of payload is Exchange IDs */
*((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
pcmd += sizeof(uint32_t);
els_rrq = (struct RRQ *) pcmd;
/** * lpfc_send_rrq - Sends ELS RRQ if needed. * @phba: pointer to lpfc hba data structure. * @rrq: pointer to the active rrq. * * This routine will call the lpfc_issue_els_rrq if the rrq is * still active for the xri. If this function returns a failure then * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. * * Returns 0 Success. * 1 Failure.
**/ int
lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
{ struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
rrq->nlp_DID); if (!ndlp) return 1;
/** * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command * @vport: pointer to a host virtual N_Port data structure. * @cmdsize: size of the ELS command. * @oldiocb: pointer to the original lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the RPL Accept Response * ELS command. * * Return code * 0 - Successfully issued ACC RPL ELS command * 1 - Failed to issue ACC RPL ELS command
**/ staticint
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{ int rc = 0; struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd; union lpfc_wqe128 *wqe;
RPL_RSP rpl_rsp; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
u32 ulp_context;
/** * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Read Port List (RPL) IOCB received as an ELS * unsolicited event. It first checks the remote port state. If the remote * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it * invokes the lpfc_els_rsp_reject() routine to send reject response. * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine * to accept the RPL. * * Return code * 0 - Successfully processed rpl iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_dmabuf *pcmd;
uint32_t *lp;
uint32_t maxsize;
uint16_t cmdsize;
RPL *rpl; struct ls_rjt stat;
if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
(ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { /* issue rejection response */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL); /* rejected the unsolicited RPL request and done with it */ return 0;
}
/* We support only one port */ if ((rpl->index == 0) &&
((maxsize == 0) ||
((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
} else {
cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
}
lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
return 0;
}
/** * lpfc_els_rcv_farp - Process an unsolicited farp request els command * @vport: pointer to a virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fibre Channel Address Resolution Protocol * (FARP) Request IOCB received as an ELS unsolicited event. Currently, * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the * remote PortName is compared against the FC PortName stored in the @vport * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is * compared against the FC NodeName stored in the @vport data structure. * If any of these matches and the FARP_REQUEST_FARPR flag is set in the * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is * invoked to send out FARP Response to the remote node. Before sending the * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() * routine is invoked to log into the remote port first. * * Return code * 0 - Either the FARP Match Mode not supported or successfully processed
**/ staticint
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_dmabuf *pcmd;
uint32_t *lp;
FARP *fp;
uint32_t cnt, did;
lp++;
fp = (FARP *) lp; /* FARP-REQ received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0601 FARP-REQ received from DID x%x\n", did); /* We will only support match on WWPN or WWNN */ if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { return 0;
}
cnt = 0; /* If this FARP command is searching for my portname */ if (fp->Mflags & FARP_MATCH_PORT) { if (memcmp(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)) == 0)
cnt = 1;
}
/* If this FARP command is searching for my nodename */ if (fp->Mflags & FARP_MATCH_NODE) { if (memcmp(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)) == 0)
cnt = 1;
}
if (cnt) { if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
(ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { /* Log back into the node before sending the FARP. */ if (fp->Rflags & FARP_REQUEST_PLOGI) {
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_PLOGI_ISSUE);
lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
}
/* Send a FARP response to that node */ if (fp->Rflags & FARP_REQUEST_FARPR)
lpfc_issue_els_farpr(vport, did, 0);
}
} return 0;
}
/** * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * This routine processes Fibre Channel Address Resolution Protocol * Response (FARPR) IOCB received as an ELS unsolicited event. It simply * invokes the lpfc_els_rsp_acc() routine to the remote node to accept * the FARP response request. * * Return code * 0 - Successfully processed FARPR IOCB (currently always return 0)
**/ staticint
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{
uint32_t did;
did = get_job_els_rsp64_did(vport->phba, cmdiocb);
/* FARP-RSP received from DID <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0600 FARP-RSP received from DID x%x\n", did); /* ACCEPT the Farp resp request */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
}
/** * lpfc_els_rcv_fan - Process an unsolicited fan iocb command * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @fan_ndlp: pointer to a node-list data structure. * * This routine processes a Fabric Address Notification (FAN) IOCB * command received as an ELS unsolicited event. The FAN ELS command will * only be processed on a physical port (i.e., the @vport represents the * physical port). The fabric NodeName and PortName from the FAN IOCB are * compared against those in the phba data structure. If any of those is * different, the lpfc_initial_flogi() routine is invoked to initialize * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, * if both of those are identical, the lpfc_issue_fabric_reglogin() routine * is invoked to register login to the fabric. * * Return code * 0 - Successfully processed fan iocb (currently always return 0).
**/ staticint
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *fan_ndlp)
{ struct lpfc_hba *phba = vport->phba;
uint32_t *lp;
FAN *fp;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
fp = (FAN *) ++lp; /* FAN received; Fan does not have a reply sequence */ if ((vport == phba->pport) &&
(vport->port_state == LPFC_LOCAL_CFG_LINK)) { if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, sizeof(struct lpfc_name))) ||
(memcmp(&phba->fc_fabparam.portName, &fp->FportName, sizeof(struct lpfc_name)))) { /* This port has switched fabrics. FLOGI is required */
lpfc_issue_init_vfi(vport);
} else { /* FAN verified - skip FLOGI */
vport->fc_myDID = vport->fc_prevDID; if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport); else {
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3138 Need register VFI: (x%x/%x)\n",
vport->fc_prevDID, vport->fc_myDID);
lpfc_issue_reg_vfi(vport);
}
}
} return 0;
}
/** * lpfc_els_rcv_edc - Process an unsolicited EDC iocb * @vport: pointer to a host virtual N_Port data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @ndlp: pointer to a node-list data structure. * * Return code * 0 - Successfully processed echo iocb (currently always return 0)
**/ staticint
lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, struct lpfc_nodelist *ndlp)
{ struct lpfc_hba *phba = vport->phba; struct fc_els_edc *edc_req; struct fc_tlv_desc *tlv;
uint8_t *payload;
uint32_t *ptr, dtag; constchar *dtag_nm; int desc_cnt = 0, bytes_remain; struct fc_diag_lnkflt_desc *plnkflt;
/* No signal support unless there is a congestion descriptor */
phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
phba->cgn_sig_freq = 0;
phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
if (bytes_remain <= 0) goto out;
tlv = edc_req->desc;
/* * cycle through EDC diagnostic descriptors to find the * congestion signaling capability descriptor
*/ while (bytes_remain) { if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
lpfc_printf_log(phba, KERN_WARNING,
LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6464 Truncated TLV hdr on " "Diagnostic descriptor[%d]\n",
desc_cnt); goto out;
}
/* We start negotiation with lpfc_fabric_cgn_frequency. * When we process the EDC, we will settle on the * higher frequency.
*/
phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
lpfc_least_capable_settings(
phba, (struct fc_diag_cg_sig_desc *)tlv); break; default:
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING,
LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, "6467 unknown Diagnostic " "Descriptor[%d]: tag x%x (%s)\n",
desc_cnt, dtag, dtag_nm);
}
bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
tlv = fc_tlv_next_desc(tlv);
desc_cnt++;
}
out: /* Need to send back an ACC */
lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
lpfc_config_cgn_signal(phba); return 0;
}
/** * lpfc_els_timeout - Handler funciton to the els timer * @t: timer context used to obtain the vport. * * This routine is invoked by the ELS timer after timeout. It posts the ELS * timer timeout event by setting the WORKER_ELS_TMO bit to the work port * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake * up the worker thread. It is for the worker thread to invoke the routine * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
**/ void
lpfc_els_timeout(struct timer_list *t)
{ struct lpfc_vport *vport = timer_container_of(vport, t, els_tmofunc); struct lpfc_hba *phba = vport->phba;
uint32_t tmo_posted; unsignedlong iflag;
if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
lpfc_worker_wake_up(phba); return;
}
/** * lpfc_els_timeout_handler - Process an els timeout event * @vport: pointer to a virtual N_Port data structure. * * This routine is the actual handler function that processes an ELS timeout * event. It walks the ELS ring to get and abort all the IOCBs (except the * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by * invoking the lpfc_sli_issue_abort_iotag() routine.
**/ void
lpfc_els_timeout_handler(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_sli_ring *pring; struct lpfc_iocbq *tmp_iocb, *piocb;
IOCB_t *cmd = NULL; struct lpfc_dmabuf *pcmd;
uint32_t els_command = 0;
uint32_t timeout;
uint32_t remote_ID = 0xffffffff;
LIST_HEAD(abort_list);
u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
timeout = (uint32_t)(phba->fc_ratov << 1);
pring = lpfc_phba_elsring(phba); if (unlikely(!pring)) return;
if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) return;
spin_lock_irq(&phba->hbalock); if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
/* Make sure HBA is alive */
lpfc_issue_hb_tmo(phba);
if (!list_empty(&pring->txcmplq)) if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
mod_timer(&vport->els_tmofunc,
jiffies + secs_to_jiffies(timeout));
}
/** * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport * @vport: pointer to a host virtual N_Port data structure. * * This routine is used to clean up all the outstanding ELS commands on a * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() * routine. After that, it walks the ELS transmit queue to remove all the * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For * the IOCBs with a non-NULL completion callback function, the callback * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion * callback function, the IOCB will simply be released. Finally, it walks * the ELS transmit completion queue to issue an abort IOCB to any transmit * completion queue IOCB that is associated with the @vport and is not * an IOCB from libdfc (i.e., the management plane IOCBs that are not * part of the discovery state machine) out to HBA by invoking the * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the * abort IOCB to any transmit completion queueed IOCB, it does not guarantee * the IOCBs are aborted when this function returns.
**/ void
lpfc_els_flush_cmd(struct lpfc_vport *vport)
{
LIST_HEAD(abort_list);
LIST_HEAD(cancel_list); struct lpfc_hba *phba = vport->phba; struct lpfc_sli_ring *pring; struct lpfc_iocbq *tmp_iocb, *piocb;
u32 ulp_command; unsignedlong iflags = 0; bool mbx_tmo_err;
lpfc_fabric_abort_vport(vport);
/* * For SLI3, only the hbalock is required. But SLI4 needs to coordinate * with the ring insert operation. Because lpfc_sli_issue_abort_iotag * ultimately grabs the ring_lock, the driver must splice the list into * a working list and release the locks before calling the abort.
*/
spin_lock_irqsave(&phba->hbalock, iflags);
pring = lpfc_phba_elsring(phba);
/* Bail out if we've no ELS wq, like in PCI error recovery case. */ if (unlikely(!pring)) {
spin_unlock_irqrestore(&phba->hbalock, iflags); return;
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags); /* First we need to issue aborts to outstanding cmds on txcmpl */
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { if (piocb->vport != vport) continue;
if ((phba->sli.sli_flag & LPFC_SLI_ACTIVE) && !mbx_tmo_err) { if (piocb->cmd_flag & LPFC_IO_LIBDFC) continue; if (piocb->cmd_flag & LPFC_DRIVER_ABORTED) continue;
}
/* On the ELS ring we can have ELS_REQUESTs, ELS_RSPs, * or GEN_REQUESTs waiting for a CQE response.
*/
ulp_command = get_job_cmnd(phba, piocb); if (ulp_command == CMD_ELS_REQUEST64_WQE ||
ulp_command == CMD_XMIT_ELS_RSP64_WQE) {
list_add_tail(&piocb->dlist, &abort_list);
/* If the link is down when flushing ELS commands * the firmware will not complete them till after * the link comes back up. This may confuse * discovery for the new link up, so we need to * change the compl routine to just clean up the iocb * and avoid any retry logic.
*/ if (phba->link_state == LPFC_LINK_DOWN)
piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
} elseif (ulp_command == CMD_GEN_REQUEST64_CR ||
mbx_tmo_err)
list_add_tail(&piocb->dlist, &abort_list);
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Abort each txcmpl iocb on aborted list and remove the dlist links. */
list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
spin_lock_irqsave(&phba->hbalock, iflags);
list_del_init(&piocb->dlist); if (mbx_tmo_err || !(phba->sli.sli_flag & LPFC_SLI_ACTIVE))
list_move_tail(&piocb->list, &cancel_list); else
lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
spin_unlock_irqrestore(&phba->hbalock, iflags);
} if (!list_empty(&cancel_list))
lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED); else /* Make sure HBA is alive */
lpfc_issue_hb_tmo(phba);
if (!list_empty(&abort_list))
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "3387 abort list for txq not empty\n");
INIT_LIST_HEAD(&abort_list);
spin_lock_irqsave(&phba->hbalock, iflags); if (phba->sli_rev == LPFC_SLI_REV4)
spin_lock(&pring->ring_lock);
/* No need to abort the txq list, * just queue them up for lpfc_sli_cancel_iocbs
*/
list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
ulp_command = get_job_cmnd(phba, piocb);
if (piocb->cmd_flag & LPFC_IO_LIBDFC) continue;
/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ if (ulp_command == CMD_QUE_RING_BUF_CN ||
ulp_command == CMD_QUE_RING_BUF64_CN ||
ulp_command == CMD_CLOSE_XRI_CN ||
ulp_command == CMD_ABORT_XRI_CN ||
ulp_command == CMD_ABORT_XRI_CX) continue;
/* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */ if (vport == phba->pport) {
list_for_each_entry_safe(piocb, tmp_iocb,
&phba->fabric_iocb_list, list) {
list_del_init(&piocb->list);
list_add_tail(&piocb->list, &abort_list);
}
}
if (phba->sli_rev == LPFC_SLI_REV4)
spin_unlock(&pring->ring_lock);
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &abort_list,
IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
return;
}
/** * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA * @phba: pointer to lpfc hba data structure. * * This routine is used to clean up all the outstanding ELS commands on a * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() * routine. After that, it walks the ELS transmit queue to remove all the * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For * the IOCBs with the completion callback function associated, the callback * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion * callback function associated, the IOCB will simply be released. Finally, * it walks the ELS transmit completion queue to issue an abort IOCB to any * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the * management plane IOCBs that are not part of the discovery state machine) * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
**/ void
lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
{ struct lpfc_vport *vport;
/** * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port * @phba: Pointer to phba object. * @wwnlist: Pointer to list of WWPNs in FPIN payload * @cnt: count of WWPNs in FPIN payload * * This routine is called by LI and PC descriptors. * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
*/ staticvoid
lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
{ char buf[LPFC_FPIN_WWPN_LINE_SZ];
__be64 wwn;
u64 wwpn; int i, len; int line = 0; int wcnt = 0; bool endit = false;
len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:"); for (i = 0; i < cnt; i++) { /* Are we on the last WWPN */ if (i == (cnt - 1))
endit = true;
/* Extract the next WWPN from the payload */
wwn = *wwnlist++;
wwpn = be64_to_cpu(wwn);
len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len, " %016llx", wwpn);
/* Log a message if we are on the last WWPN * or if we hit the max allowed per message.
*/
wcnt++; if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
buf[len] = 0;
lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4686 %s\n", buf);
/* Check if we reached the last WWPN */ if (endit) return;
/* Limit the number of log message displayed per FPIN */
line++; if (line == LPFC_FPIN_WWPN_NUM_LINE) {
lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "4687 %d WWPNs Truncated\n",
cnt - i - 1); return;
}
/* Start over with next log message */
wcnt = 0;
len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Additional WWPNs:");
}
}
}
/** * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event. * @phba: Pointer to phba object. * @tlv: Pointer to the Link Integrity Notification Descriptor. * * This function processes a Link Integrity FPIN event by logging a message.
**/ staticvoid
lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
{ struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv; constchar *li_evt_str;
u32 li_evt, cnt;
/** * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification * @phba: Pointer to hba object. * @tlv: Pointer to the Congestion Notification Descriptor TLV * * This function processes an FPIN Congestion Notifiction. The notification * could be an Alarm or Warning. This routine feeds that data into driver's * running congestion algorithm. It also processes the FPIN by * logging a message. It returns 1 to indicate deliver this message * to the upper layer or 0 to indicate don't deliver it.
**/ staticint
lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
{ struct lpfc_cgn_info *cp; struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv; constchar *cgn_evt_str;
u32 cgn_evt; constchar *cgn_sev_str;
u32 cgn_sev;
uint16_t value;
u32 crc; bool nm_log = false; int rc = 1;
/* The driver only takes action on a Credit Stall or Oversubscription * event type to engage the IO algorithm. The driver prints an * unmaskable message only for Lost Credit and Credit Stall. * TODO: Still need to have definition of host action on clear, * lost credit and device specific event types.
*/ switch (cgn_evt) { case FPIN_CONGN_LOST_CREDIT:
nm_log = true; break; case FPIN_CONGN_CREDIT_STALL:
nm_log = true;
fallthrough; case FPIN_CONGN_OVERSUBSCRIPTION: if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
nm_log = false; switch (cgn_sev) { case FPIN_CONGN_SEVERITY_ERROR: /* Take action here for an Alarm event */ if (phba->cmf_active_mode != LPFC_CFG_OFF) { if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) { /* Track of alarm cnt for SYNC_WQE */
atomic_inc(&phba->cgn_sync_alarm_cnt);
} /* Track alarm cnt for cgn_info regardless * of whether CMF is configured for Signals * or FPINs.
*/
atomic_inc(&phba->cgn_fabric_alarm_cnt); goto cleanup;
} break; case FPIN_CONGN_SEVERITY_WARNING: /* Take action here for a Warning event */ if (phba->cmf_active_mode != LPFC_CFG_OFF) { if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) { /* Track of warning cnt for SYNC_WQE */
atomic_inc(&phba->cgn_sync_warn_cnt);
} /* Track warning cnt and freq for cgn_info * regardless of whether CMF is configured for * Signals or FPINs.
*/
atomic_inc(&phba->cgn_fabric_warn_cnt);
cleanup: /* Save frequency in ms */
phba->cgn_fpin_frequency =
be32_to_cpu(cgn->event_period);
value = phba->cgn_fpin_frequency; if (phba->cgn_i) {
cp = (struct lpfc_cgn_info *)
phba->cgn_i->virt;
cp->cgn_alarm_freq =
cpu_to_le16(value);
cp->cgn_warn_freq =
cpu_to_le16(value);
crc = lpfc_cgn_calc_crc32
(cp,
LPFC_CGN_INFO_SZ,
LPFC_CGN_CRC32_SEED);
cp->cgn_info_crc = cpu_to_le32(crc);
}
/* Don't deliver to upper layer since * driver took action on this tlv.
*/
rc = 0;
} break;
} break;
}
/* Change the log level to unmaskable for the following event types. */
lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
LOG_CGN_MGMT | LOG_ELS, "4683 FPIN CONGESTION %s type %s (x%x) Event " "Duration %d mSecs\n",
cgn_sev_str, cgn_evt_str, cgn_evt,
be32_to_cpu(cgn->event_period)); return rc;
}
/* FPINs handled only if we are in the right discovery state */ if (vport->port_state < LPFC_DISC_AUTH) return;
/* make sure there is the full fpin header */ if (fpin_length < sizeof(struct fc_els_fpin)) return;
/* Sanity check descriptor length. The desc_len value does not * include space for the ELS command and the desc_len fields.
*/
len = be32_to_cpu(fpin->desc_len); if (fpin_length < len + sizeof(struct fc_els_fpin)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4671 Bad ELS FPIN length %d: %d\n",
len, fpin_length); return;
}
/* process each descriptor separately */ while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
dtag = be32_to_cpu(tlv->desc_tag); switch (dtag) { case ELS_DTAG_LNK_INTEGRITY:
lpfc_els_rcv_fpin_li(phba, tlv);
deliver = 1; break; case ELS_DTAG_DELIVERY:
lpfc_els_rcv_fpin_del(phba, tlv);
deliver = 1; break; case ELS_DTAG_PEER_CONGEST:
lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
deliver = 1; break; case ELS_DTAG_CONGESTION:
deliver = lpfc_els_rcv_fpin_cgn(phba, tlv); break; default:
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4678 unknown FPIN descriptor[%d]: " "tag x%x (%s)\n",
desc_cnt, dtag, dtag_nm);
/* If descriptor is bad, drop the rest of the data */ return;
}
lpfc_cgn_update_stat(phba, dtag);
cnt = be32_to_cpu(tlv->desc_len);
/* Sanity check descriptor length. The desc_len value does not * include space for the desc_tag and the desc_len fields.
*/
len -= (cnt + sizeof(struct fc_tlv_desc)); if (len < 0) {
dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, "4672 Bad FPIN descriptor TLV length " "%d: %d %d %s\n",
cnt, len, fpin_length, dtag_nm); return;
}
/* Format payload such that the FPIN delivered to the * upper layer is a single descriptor FPIN.
*/ if (desc_cnt)
memcpy(first_tlv, current_tlv,
(cnt + sizeof(struct fc_els_fpin)));
/* Adjust the length so that it only reflects a * single descriptor FPIN.
*/
fpin_length = cnt + sizeof(struct fc_els_fpin);
fpin->desc_len = cpu_to_be32(fpin_length);
fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
/* Send every descriptor individually to the upper layer */ if (deliver)
fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
fpin_length, (char *)fpin, 0);
desc_cnt++;
}
}
/** * lpfc_els_unsol_buffer - Process an unsolicited event data buffer * @phba: pointer to lpfc hba data structure. * @pring: pointer to a SLI ring. * @vport: pointer to a host virtual N_Port data structure. * @elsiocb: pointer to lpfc els command iocb data structure. * * This routine is used for processing the IOCB associated with a unsolicited * event. It first determines whether there is an existing ndlp that matches * the DID from the unsolicited IOCB. If not, it will create a new one with * the DID from the unsolicited IOCB. The ELS command from the unsolicited * IOCB is then used to invoke the proper routine and to set up proper state * of the discovery state machine.
**/ staticvoid
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
{ struct lpfc_nodelist *ndlp; struct ls_rjt stat;
u32 *payload, payload_len;
u32 cmd = 0, did = 0, newnode, status = 0;
uint8_t rjt_exp, rjt_err = 0, init_link = 0; struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
LPFC_MBOXQ_t *mbox;
/* Check to see if link went down during discovery */ if (lpfc_els_chk_latt(vport)) goto dropit;
/* Ignore traffic received during vport shutdown. */ if (test_bit(FC_UNLOADING, &vport->load_flag)) goto dropit;
/* If NPort discovery is delayed drop incoming ELS */ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) &&
cmd != ELS_CMD_PLOGI) goto dropit;
ndlp = lpfc_findnode_did(vport, did); if (!ndlp) { /* Cannot find existing Fabric ndlp, so allocate a new one */
ndlp = lpfc_nlp_init(vport, did); if (!ndlp) goto dropit;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1; if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
ndlp->nlp_type |= NLP_FABRIC;
} elseif (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
newnode = 1;
}
phba->fc_stat.elsRcvFrame++;
/* * Do not process any unsolicited ELS commands * if the ndlp is in DEV_LOSS
*/ if (test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag)) { if (newnode)
lpfc_nlp_put(ndlp); goto dropit;
}
elsiocb->ndlp = lpfc_nlp_get(ndlp); if (!elsiocb->ndlp) goto dropit;
elsiocb->vport = vport;
if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
cmd &= ELS_CMD_MASK;
} /* ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0112 ELS command x%x received from NPORT x%x " "refcnt %d Data: x%x x%lx x%x x%x\n",
cmd, did, kref_read(&ndlp->kref), vport->port_state,
vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
/* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
(cmd != ELS_CMD_FLOGI) &&
!((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) {
rjt_err = LSRJT_LOGICAL_BSY;
rjt_exp = LSEXP_NOTHING_MORE; goto lsrjt;
}
phba->fc_stat.elsRcvPLOGI++;
ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); if (phba->sli_rev == LPFC_SLI_REV4 &&
test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
vport->fc_prevDID = vport->fc_myDID; /* Our DID needs to be updated before registering * the vfi. This is done in lpfc_rcv_plogi but * that is called after the reg_vfi.
*/
vport->fc_myDID =
bf_get(els_rsp64_sid,
&elsiocb->wqe.xmit_els_rsp);
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "3312 Remote port assigned DID x%x " "%x\n", vport->fc_myDID,
vport->fc_prevDID);
}
lpfc_send_els_event(vport, ndlp, payload);
/* If Nport discovery is delayed, reject PLOGIs */ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
rjt_err = LSRJT_UNABLE_TPC;
rjt_exp = LSEXP_NOTHING_MORE; break;
}
/* If the driver believes fabric discovery is done and is ready, * bounce the link. There is some descrepancy.
*/ if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
test_bit(FC_PT2PT, &vport->fc_flag) &&
vport->rcv_flogi_cnt >= 1) {
rjt_err = LSRJT_LOGICAL_BSY;
rjt_exp = LSEXP_NOTHING_MORE;
init_link++; goto lsrjt;
}
lpfc_els_rcv_flogi(vport, elsiocb, ndlp); /* retain node if our response is deferred */ if (phba->defer_flogi_acc.flag) break; if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM); break; case ELS_CMD_LOGO:
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, "RCV LOGO: did:x%x/ste:x%x flg:x%lx",
did, vport->port_state, ndlp->nlp_flag);
/* There are no replies, so no rjt codes */ break; case ELS_CMD_EDC:
lpfc_els_rcv_edc(vport, elsiocb, ndlp); break; case ELS_CMD_RDF:
phba->fc_stat.elsRcvRDF++; /* Accept RDF only from fabric controller */ if (did != Fabric_Cntl_DID) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, "1115 Received RDF from invalid DID " "x%x\n", did);
rjt_err = LSRJT_PROTOCOL_ERR;
rjt_exp = LSEXP_NOTHING_MORE; goto lsrjt;
}
/* Unknown ELS command <elsCmd> received from NPORT <did> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0115 Unknown ELS command x%x " "received from NPORT x%x\n", cmd, did); if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM); break;
}
lsrjt: /* check if need to LS_RJT received ELS cmd */ if (rjt_err) {
memset(&stat, 0, sizeof(stat));
stat.un.b.lsRjtRsnCode = rjt_err;
stat.un.b.lsRjtRsnCodeExp = rjt_exp;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
NULL); /* Remove the reference from above for new nodes. */ if (newnode)
lpfc_disc_state_machine(vport, ndlp, NULL,
NLP_EVT_DEVICE_RM);
}
/* Release the reference on this elsiocb, not the ndlp. */
lpfc_nlp_put(elsiocb->ndlp);
elsiocb->ndlp = NULL;
/* Special case. Driver received an unsolicited command that * unsupportable given the driver's current state. Reset the * link and start over.
*/ if (init_link) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return;
lpfc_linkdown(phba);
lpfc_init_link(phba, mbox,
phba->cfg_topology,
phba->cfg_link_speed);
mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport; if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
MBX_NOT_FINISHED)
mempool_free(mbox, phba->mbox_mem_pool);
}
return;
dropit: if (vport && !test_bit(FC_UNLOADING, &vport->load_flag))
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0111 Dropping received ELS cmd " "Data: x%x x%x x%x x%x\n",
cmd, status, get_job_word4(phba, elsiocb), did);
phba->fc_stat.elsRcvDrop++;
}
/** * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring * @phba: pointer to lpfc hba data structure. * @pring: pointer to a SLI ring. * @elsiocb: pointer to lpfc els iocb data structure. * * This routine is used to process an unsolicited event received from a SLI * (Service Level Interface) ring. The actual processing of the data buffer * associated with the unsolicited event is done by invoking the routine * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the * SLI ring on which the unsolicited event was received.
**/ void
lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct lpfc_iocbq *elsiocb)
{ struct lpfc_vport *vport = elsiocb->vport;
u32 ulp_command, status, parameter, bde_count = 0;
IOCB_t *icmd; struct lpfc_wcqe_complete *wcqe_cmpl = NULL; struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf; struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
dma_addr_t paddr;
/* If there are no BDEs associated * with this IOCB, there is nothing to do.
*/ if (bde_count == 0) return;
/* Account for SLI2 or SLI3 and later unsolicited buffering */ if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
elsiocb->cmd_dmabuf = bdeBuf1; if (bde_count == 2)
elsiocb->bpl_dmabuf = bdeBuf2;
} else {
icmd = &elsiocb->iocb;
paddr = getPaddr(icmd->un.cont64[0].addrHigh,
icmd->un.cont64[0].addrLow);
elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
paddr); if (bde_count == 2) {
paddr = getPaddr(icmd->un.cont64[1].addrHigh,
icmd->un.cont64[1].addrLow);
elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
pring,
paddr);
}
}
lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); /* * The different unsolicited event handlers would tell us * if they are done with "mp" by setting cmd_dmabuf to NULL.
*/ if (elsiocb->cmd_dmabuf) {
lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
elsiocb->cmd_dmabuf = NULL;
}
if (elsiocb->bpl_dmabuf) {
lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
elsiocb->bpl_dmabuf = NULL;
}
/* If this is the first time, allocate an ndlp and initialize * it. Otherwise, make sure the node is enabled and then do the * login.
*/
ndlp = lpfc_findnode_did(vport, FDMI_DID); if (!ndlp) {
ndlp = lpfc_nlp_init(vport, FDMI_DID); if (ndlp) {
ndlp->nlp_type |= NLP_FABRIC;
} else { return;
}
}
/** * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr * @phba: pointer to lpfc hba data structure. * @vport: pointer to a virtual N_Port data structure. * * This routine issues a Port Login (PLOGI) to the Name Server with * State Change Request (SCR) for a @vport. This routine will create an * ndlp for the Name Server associated to the @vport if such node does * not already exist. The PLOGI to Name Server is issued by invoking the * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface * (FDMI) is configured to the @vport, a FDMI node will be created and * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
**/ void
lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{ struct lpfc_nodelist *ndlp;
/* * If lpfc_delay_discovery parameter is set and the clean address * bit is cleared and fc fabric parameters chenged, delay FC NPort * discovery.
*/ if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "3334 Delay fc port discovery for %d secs\n",
phba->fc_ratov);
mod_timer(&vport->delayed_disc_tmo,
jiffies + secs_to_jiffies(phba->fc_ratov)); return;
}
ndlp = lpfc_findnode_did(vport, NameServer_DID); if (!ndlp) {
ndlp = lpfc_nlp_init(vport, NameServer_DID); if (!ndlp) { if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
lpfc_disc_start(vport); return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "0251 NameServer login: no memory\n"); return;
}
}
/** * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. * * This routine is the completion callback function to register new vport * mailbox command. If the new vport mailbox command completes successfully, * the fabric registration login shall be performed on physical port (the * new vport created is actually a physical port, with VPI 0) or the port * login to Name Server for State Change Request (SCR) will be performed * on virtual port (real virtual port, with VPI greater than 0).
**/ staticvoid
lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{ struct lpfc_vport *vport = pmb->vport; struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
MAILBOX_t *mb = &pmb->u.mb; int rc;
switch (mb->mbxStatus) { case 0x11: /* unsupported feature */ case 0x9603: /* max_vpi exceeded */ case 0x9602: /* Link event since CLEAR_LA */ /* giving up on vport registration */
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
clear_bit(FC_FABRIC, &vport->fc_flag);
clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
lpfc_can_disctmo(vport); break; /* If reg_vpi fail with invalid VPI status, re-init VPI */ case 0x20:
set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
lpfc_init_vpi(phba, pmb, vport->vpi);
pmb->vport = vport;
pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb,
MBX_NOWAIT); if (rc == MBX_NOT_FINISHED) {
lpfc_printf_vlog(vport, KERN_ERR,
LOG_TRACE_EVENT, "2732 Failed to issue INIT_VPI" " mailbox command\n");
} else {
lpfc_nlp_put(ndlp); return;
}
fallthrough; default: /* Try to recover from this error */ if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_sli4_unreg_all_rpis(vport);
lpfc_mbx_unreg_vpi(vport);
set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag); if (mb->mbxStatus == MBX_NOT_FINISHED) break; if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
!test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) { if (phba->sli_rev == LPFC_SLI_REV4)
lpfc_issue_init_vfi(vport); else
lpfc_initial_flogi(vport);
} else {
lpfc_initial_fdisc(vport);
} break;
}
} else {
spin_lock_irq(shost->host_lock);
vport->vpi_state |= LPFC_VPI_REGISTERED;
spin_unlock_irq(shost->host_lock); if (vport == phba->pport) { if (phba->sli_rev < LPFC_SLI_REV4)
lpfc_issue_fabric_reglogin(vport); else { /* * If the physical port is instantiated using * FDISC, do not start vport discovery.
*/ if (vport->port_state != LPFC_FDISC)
lpfc_start_fdiscs(phba);
lpfc_do_scr_ns_plogi(phba, vport);
}
} else {
lpfc_do_scr_ns_plogi(phba, vport);
}
}
mbox_err_exit: /* Now, we decrement the ndlp reference count held for this * callback function
*/
lpfc_nlp_put(ndlp);
mempool_free(pmb, phba->mbox_mem_pool);
/* reinitialize the VMID datastructure before returning. * this is specifically for vport
*/ if (lpfc_is_vmid_enabled(phba))
lpfc_reinit_vmid(vport);
vport->vmid_flag = vport->phba->pport->vmid_flag;
return;
}
/** * lpfc_register_new_vport - Register a new vport with a HBA * @phba: pointer to lpfc hba data structure. * @vport: pointer to a host virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * * This routine registers the @vport as a new virtual port with a HBA. * It is done through a registering vpi mailbox command.
**/ void
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
LPFC_MBOXQ_t *mbox;
/** * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer * @phba: pointer to lpfc hba data structure. * * This routine cancels the retry delay timers to all the vports.
**/ void
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
{ struct lpfc_vport **vports; struct lpfc_nodelist *ndlp;
uint32_t link_state; int i;
/* Treat this failure as linkdown for all vports */
link_state = phba->link_state;
lpfc_linkdown(phba);
phba->link_state = link_state;
vports = lpfc_create_vport_work_array(phba);
if (vports) { for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
ndlp = lpfc_findnode_did(vports[i], Fabric_DID); if (ndlp)
lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
lpfc_els_flush_cmd(vports[i]);
}
lpfc_destroy_vport_work_array(phba, vports);
}
}
/** * lpfc_retry_pport_discovery - Start timer to retry FLOGI. * @phba: pointer to lpfc hba data structure. * * This routine abort all pending discovery commands and * start a timer to retry FLOGI for the physical port * discovery.
**/ void
lpfc_retry_pport_discovery(struct lpfc_hba *phba)
{ struct lpfc_nodelist *ndlp;
/* Cancel the all vports retry delay retry timers */
lpfc_cancel_all_vport_retry_delay_timer(phba);
/* If fabric require FLOGI, then re-instantiate physical login */
ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (!ndlp) return;
/** * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to a Fabric Discover * (FDISC) ELS command. Since all the FDISC ELS commands are issued * single threaded, each FDISC completion callback function will reset * the discovery timer for all vports such that the timers will not get * unnecessary timeout. The function checks the FDISC IOCB status. If error * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID * assigned to the vport has been changed with the completion of the FDISC * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) * are unregistered from the HBA, and then the lpfc_register_new_vport() * routine is invoked to register new vport with the HBA. Otherwise, the * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name * Server for State Change Request (SCR).
**/ staticvoid
lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport; struct lpfc_nodelist *ndlp = cmdiocb->ndlp; struct lpfc_nodelist *np; struct lpfc_nodelist *next_np; struct lpfc_iocbq *piocb; struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; struct serv_parm *sp;
uint8_t fabric_param_changed;
u32 ulp_status, ulp_word4;
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
ulp_status, ulp_word4,
vport->fc_prevDID); /* Since all FDISCs are being single threaded, we * must reset the discovery timer for ALL vports * waiting to send FDISC when one completes.
*/
list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
lpfc_set_disctmo(piocb->vport);
}
/* The FDISC completed successfully. Move the fabric ndlp to * UNMAPPED state and register with the transport.
*/
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); goto out;
/** * lpfc_issue_els_fdisc - Issue a fdisc iocb command * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * @retry: number of retries to the command IOCB. * * This routine prepares and issues a Fabric Discover (FDISC) IOCB to * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() * routine to issue the IOCB, which makes sure only one outstanding fabric * IOCB will be sent off HBA at any given time. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the FDISC ELS command. * * Return code * 0 - Successfully issued fdisc iocb command * 1 - Failed to issue fdisc iocb command
**/ staticint
lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint8_t retry)
{ struct lpfc_hba *phba = vport->phba;
IOCB_t *icmd; union lpfc_wqe128 *wqe = NULL; struct lpfc_iocbq *elsiocb; struct serv_parm *sp;
uint8_t *pcmd;
uint16_t cmdsize; int did = ndlp->nlp_DID; int rc;
/** * lpfc_cmpl_els_npiv_logo - Completion function with vport logo * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the completion callback function to the issuing of a LOGO * ELS command off a vport. It frees the command IOCB and then decrement the * reference count held on ndlp for this completion function, indicating that * the reference to the ndlp is no long needed. Note that the * lpfc_els_free_iocb() routine decrements the ndlp reference held for this * callback function and an additional explicit ndlp reference decrementation * will trigger the actual release of the ndlp.
**/ staticvoid
lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct lpfc_vport *vport = cmdiocb->vport;
IOCB_t *irsp; struct lpfc_nodelist *ndlp;
u32 ulp_status, ulp_word4, did, tmo;
if (test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags)) { /* Wake up lpfc_vport_delete if waiting...*/ if (ndlp->logo_waitq)
wake_up(ndlp->logo_waitq);
clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
}
/** * lpfc_issue_els_npiv_logo - Issue a logo off a vport * @vport: pointer to a virtual N_Port data structure. * @ndlp: pointer to a node-list data structure. * * This routine issues a LOGO ELS command to an @ndlp off a @vport. * * Note that the ndlp reference count will be incremented by 1 for holding the * ndlp and the reference to ndlp will be stored into the ndlp field of * the IOCB for the completion callback function to the LOGO ELS command. * * Return codes * 0 - Successfully issued logo off the @vport * 1 - Failed to issue logo off the @vport
**/ int
lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{ int rc = 0; struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *elsiocb;
uint8_t *pcmd;
uint16_t cmdsize;
/** * lpfc_fabric_block_timeout - Handler function to the fabric block timer * @t: timer context used to obtain the lpfc hba. * * This routine is invoked by the fabric iocb block timer after * timeout. It posts the fabric iocb block timeout event by setting the * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes * lpfc_worker_wake_up() routine to wake up the worker thread. It is for * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the * posted event WORKER_FABRIC_BLOCK_TMO.
**/ void
lpfc_fabric_block_timeout(struct timer_list *t)
{ struct lpfc_hba *phba = timer_container_of(phba, t,
fabric_block_timer); unsignedlong iflags;
uint32_t tmo_posted;
if (!tmo_posted)
lpfc_worker_wake_up(phba); return;
}
/** * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list * @phba: pointer to lpfc hba data structure. * * This routine issues one fabric iocb from the driver internal list to * the HBA. It first checks whether it's ready to issue one fabric iocb to * the HBA (whether there is no outstanding fabric iocb). If so, it shall * remove one pending fabric iocb from the driver internal list and invokes * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
**/ staticvoid
lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
{ struct lpfc_iocbq *iocb; unsignedlong iflags; int ret;
repeat:
iocb = NULL;
spin_lock_irqsave(&phba->hbalock, iflags); /* Post any pending iocb to the SLI layer */ if (atomic_read(&phba->fabric_iocb_count) == 0) {
list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
list); if (iocb) /* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
}
spin_unlock_irqrestore(&phba->hbalock, iflags); if (iocb) {
iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
iocb->cmd_flag |= LPFC_IO_FABRIC;
/** * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine unblocks the issuing fabric iocb command. The function * will clear the fabric iocb block bit and then invoke the routine * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb * from the driver internal fabric iocb list.
**/ void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
lpfc_resume_fabric_iocbs(phba); return;
}
/** * lpfc_block_fabric_iocbs - Block issuing fabric iocb command * @phba: pointer to lpfc hba data structure. * * This routine blocks the issuing fabric iocb for a specified amount of * time (currently 100 ms). This is done by set the fabric iocb block bit * and set up a timeout timer for 100ms. When the block bit is set, no more * fabric iocb will be issued out of the HBA.
**/ staticvoid
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{ int blocked;
blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); /* Start a timer to unblock fabric iocbs after 100ms */ if (!blocked)
mod_timer(&phba->fabric_block_timer,
jiffies + msecs_to_jiffies(100));
return;
}
/** * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb * @phba: pointer to lpfc hba data structure. * @cmdiocb: pointer to lpfc command iocb data structure. * @rspiocb: pointer to lpfc response iocb data structure. * * This routine is the callback function that is put to the fabric iocb's * callback function pointer (iocb->cmd_cmpl). The original iocb's callback * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback * function first restores and invokes the original iocb's callback function * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next * fabric bound iocb from the driver internal fabric iocb list onto the wire.
**/ staticvoid
lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, struct lpfc_iocbq *rspiocb)
{ struct ls_rjt stat;
u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
u32 ulp_word4 = get_job_word4(phba, rspiocb);
atomic_dec(&phba->fabric_iocb_count); if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { /* Post any pending iocbs to HBA */
lpfc_resume_fabric_iocbs(phba);
}
}
/** * lpfc_issue_fabric_iocb - Issue a fabric iocb command * @phba: pointer to lpfc hba data structure. * @iocb: pointer to lpfc command iocb data structure. * * This routine is used as the top-level API for issuing a fabric iocb command * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver * function makes sure that only one fabric bound iocb will be outstanding at * any given time. As such, this function will first check to see whether there * is already an outstanding fabric iocb on the wire. If so, it will put the * newly issued iocb onto the driver internal fabric iocb list, waiting to be * issued later. Otherwise, it will issue the iocb on the wire and update the * fabric iocb count it indicate that there is one fabric iocb on the wire. * * Note, this implementation has a potential sending out fabric IOCBs out of * order. The problem is caused by the construction of the "ready" boolen does * not include the condition that the internal fabric IOCB list is empty. As * such, it is possible a fabric IOCB issued by this routine might be "jump" * ahead of the fabric IOCBs in the internal list. * * Return code * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully * IOCB_ERROR - failed to issue fabric iocb
**/ staticint
lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
{ unsignedlong iflags; int ready; int ret;
if (ready) /* Increment fabric iocb count to hold the position */
atomic_inc(&phba->fabric_iocb_count);
spin_unlock_irqrestore(&phba->hbalock, iflags); if (ready) {
iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
iocb->cmd_flag |= LPFC_IO_FABRIC;
/** * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list * @vport: pointer to a virtual N_Port data structure. * * This routine aborts all the IOCBs associated with a @vport from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @vport off the list, set the * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB.
**/ staticvoid lpfc_fabric_abort_vport(struct lpfc_vport *vport)
{
LIST_HEAD(completions); struct lpfc_hba *phba = vport->phba; struct lpfc_iocbq *tmp_iocb, *piocb;
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/** * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list * @ndlp: pointer to a node-list data structure. * * This routine aborts all the IOCBs associated with an @ndlp from the * driver internal fabric IOCB list. The list contains fabric IOCBs to be * issued to the ELS IOCB ring. This abort function walks the fabric IOCB * list, removes each IOCB associated with the @ndlp off the list, set the * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function * associated with the IOCB.
**/ void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
LIST_HEAD(completions); struct lpfc_hba *phba = ndlp->phba; struct lpfc_iocbq *tmp_iocb, *piocb; struct lpfc_sli_ring *pring;
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/** * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list * @phba: pointer to lpfc hba data structure. * * This routine aborts all the IOCBs currently on the driver internal * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS * IOCB ring. This function takes the entire IOCB list off the fabric IOCB * list, removes IOCBs off the list, set the status field to * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with * the IOCB.
**/ void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
{
LIST_HEAD(completions);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/** * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport * @vport: pointer to lpfc vport data structure. * * This routine is invoked by the vport cleanup for deletions and the cleanup * for an ndlp on removal.
**/ void
lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
{ struct lpfc_hba *phba = vport->phba; struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; struct lpfc_nodelist *ndlp = NULL; unsignedlong iflag = 0;
/* If the xri on the abts_els_sgl list is for the Fport * node and the vport is unloading, the xri aborted wcqe * likely isn't coming back. Just release the sgl.
*/ if (test_bit(FC_UNLOADING, &vport->load_flag) &&
ndlp->nlp_DID == Fabric_DID) {
list_del(&sglq_entry->list);
sglq_entry->state = SGL_FREED;
list_add_tail(&sglq_entry->list,
&phba->sli4_hba.lpfc_els_sgl_list);
}
}
}
spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); return;
}
/** * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort * @phba: pointer to lpfc hba data structure. * @axri: pointer to the els xri abort wcqe structure. * * This routine is invoked by the worker thread to process a SLI4 slow-path * ELS aborted xri.
**/ void
lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
uint16_t lxri = 0;
/* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. * @vport: pointer to virtual port object. * @ndlp: nodelist pointer for the impacted node. * * The driver calls this routine in response to an SLI4 XRI ABORT CQE * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, * the driver is required to send a LOGO to the remote node before it * attempts to recover its login to the remote node.
*/ void
lpfc_sli_abts_recover_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{ struct Scsi_Host *shost; struct lpfc_hba *phba; unsignedlong flags = 0;
shost = lpfc_shost_from_vport(vport);
phba = vport->phba; if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
lpfc_printf_log(phba, KERN_INFO,
LOG_SLI, "3093 No rport recovery needed. " "rport in state 0x%x\n", ndlp->nlp_state); return;
}
lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, "3094 Start rport recovery on shost id 0x%x " "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " "flag 0x%lx\n",
shost->host_no, ndlp->nlp_DID,
vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
ndlp->nlp_flag); /* * The rport is not responding. Remove the FCP-2 flag to prevent * an ADISC in the follow-up recovery code.
*/
spin_lock_irqsave(&ndlp->lock, flags);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
spin_unlock_irqrestore(&ndlp->lock, flags);
set_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
lpfc_unreg_rpi(vport, ndlp);
}
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