diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_els.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_els.c | 12272 |
1 files changed, 12272 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c new file mode 100644 index 000000000..6b5ce9869 --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -0,0 +1,12272 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term * + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * + * Copyright (C) 2004-2016 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.broadcom.com * + * Portions Copyright (C) 2004-2005 Christoph Hellwig * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + *******************************************************************/ +/* See Fibre Channel protocol T11 FC-LS for details */ +#include <linux/blkdev.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/delay.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport_fc.h> +#include <uapi/scsi/fc/fc_fs.h> +#include <uapi/scsi/fc/fc_els.h> + +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" +#include "lpfc_vport.h" +#include "lpfc_debugfs.h" + +static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); +static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); +static void lpfc_fabric_abort_vport(struct lpfc_vport *vport); +static int lpfc_issue_els_fdisc(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp, uint8_t retry); +static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba, + struct lpfc_iocbq *iocb); +static void lpfc_cmpl_els_edc(struct lpfc_hba *phba, + struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb); +static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *, + struct lpfc_iocbq *); + +static int lpfc_max_els_tries = 3; + +static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport); +static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max); +static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid); + +/** + * lpfc_els_chk_latt - Check host link attention event for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine checks whether there is an outstanding host link + * attention event during the discovery process with the @vport. It is done + * by reading the HBA's Host Attention (HA) register. If there is any host + * link attention events during this @vport's discovery process, the @vport + * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall + * be issued if the link state is not already in host link cleared state, + * and a return code shall indicate whether the host link attention event + * had happened. + * + * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport + * state in LPFC_VPORT_READY, the request for checking host link attention + * event will be ignored and a return code shall indicate no host link + * attention event had happened. + * + * Return codes + * 0 - no host link attention event happened + * 1 - host link attention event happened + **/ +int +lpfc_els_chk_latt(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + uint32_t ha_copy; + + if (vport->port_state >= LPFC_VPORT_READY || + phba->link_state == LPFC_LINK_DOWN || + phba->sli_rev > LPFC_SLI_REV3) + return 0; + + /* Read the HBA Host Attention Register */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return 1; + + if (!(ha_copy & HA_LATT)) + return 0; + + /* Pending Link Event during Discovery */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0237 Pending Link Event during " + "Discovery: State x%x\n", + phba->pport->port_state); + + /* CLEAR_LA should re-enable link attention events and + * we should then immediately take a LATT event. The + * LATT processing should call lpfc_linkdown() which + * will cleanup any left over in-progress discovery + * events. + */ + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_ABORT_DISCOVERY; + spin_unlock_irq(shost->host_lock); + + if (phba->link_state != LPFC_CLEAR_LA) + lpfc_issue_clear_la(phba, vport); + + return 1; +} + +/** + * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure + * @vport: pointer to a host virtual N_Port data structure. + * @expect_rsp: flag indicating whether response is expected. + * @cmd_size: size of the ELS command. + * @retry: number of retries to the command when it fails. + * @ndlp: pointer to a node-list data structure. + * @did: destination identifier. + * @elscmd: the ELS command code. + * + * This routine is used for allocating a lpfc-IOCB data structure from + * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters + * passed into the routine for discovery state machine to issue an Extended + * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation + * and preparation routine that is used by all the discovery state machine + * routines and the ELS command-specific fields will be later set up by + * the individual discovery machine routines after calling this routine + * allocating and preparing a generic IOCB data structure. It fills in the + * Buffer Descriptor Entries (BDEs), allocates buffers for both command + * payload and response payload (if expected). The reference count on the + * ndlp is incremented by 1 and the reference to the ndlp is put into + * ndlp of the IOCB data structure for this IOCB to hold the ndlp + * reference for the command's callback function to access later. + * + * Return code + * Pointer to the newly allocated/prepared els iocb data structure + * NULL - when els iocb data structure allocation/preparation failed + **/ +struct lpfc_iocbq * +lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp, + u16 cmd_size, u8 retry, + struct lpfc_nodelist *ndlp, u32 did, + u32 elscmd) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp; + struct ulp_bde64_le *bpl; + u32 timeout = 0; + + if (!lpfc_is_link_up(phba)) + return NULL; + + /* Allocate buffer for command iocb */ + elsiocb = lpfc_sli_get_iocbq(phba); + if (!elsiocb) + return NULL; + + /* + * If this command is for fabric controller and HBA running + * in FIP mode send FLOGI, FDISC and LOGO as FIP frames. + */ + if ((did == Fabric_DID) && + (phba->hba_flag & HBA_FIP_SUPPORT) && + ((elscmd == ELS_CMD_FLOGI) || + (elscmd == ELS_CMD_FDISC) || + (elscmd == ELS_CMD_LOGO))) + switch (elscmd) { + case ELS_CMD_FLOGI: + elsiocb->cmd_flag |= + ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT) + & LPFC_FIP_ELS_ID_MASK); + break; + case ELS_CMD_FDISC: + elsiocb->cmd_flag |= + ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT) + & LPFC_FIP_ELS_ID_MASK); + break; + case ELS_CMD_LOGO: + elsiocb->cmd_flag |= + ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT) + & LPFC_FIP_ELS_ID_MASK); + break; + } + else + elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK; + + /* fill in BDEs for command */ + /* Allocate buffer for command payload */ + pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL); + if (pcmd) + pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys); + if (!pcmd || !pcmd->virt) + goto els_iocb_free_pcmb_exit; + + INIT_LIST_HEAD(&pcmd->list); + + /* Allocate buffer for response payload */ + if (expect_rsp) { + prsp = kmalloc(sizeof(*prsp), GFP_KERNEL); + if (prsp) + prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, + &prsp->phys); + if (!prsp || !prsp->virt) + goto els_iocb_free_prsp_exit; + INIT_LIST_HEAD(&prsp->list); + } else { + prsp = NULL; + } + + /* Allocate buffer for Buffer ptr list */ + pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL); + if (pbuflist) + pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI, + &pbuflist->phys); + if (!pbuflist || !pbuflist->virt) + goto els_iocb_free_pbuf_exit; + + INIT_LIST_HEAD(&pbuflist->list); + + if (expect_rsp) { + switch (elscmd) { + case ELS_CMD_FLOGI: + timeout = FF_DEF_RATOV * 2; + break; + case ELS_CMD_LOGO: + timeout = phba->fc_ratov; + break; + default: + timeout = phba->fc_ratov * 2; + } + + /* Fill SGE for the num bde count */ + elsiocb->num_bdes = 2; + } + + if (phba->sli_rev == LPFC_SLI_REV4) + bmp = pcmd; + else + bmp = pbuflist; + + lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did, + elscmd, timeout, expect_rsp); + + bpl = (struct ulp_bde64_le *)pbuflist->virt; + bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys)); + bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys)); + bpl->type_size = cpu_to_le32(cmd_size); + bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64); + + if (expect_rsp) { + bpl++; + bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys)); + bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys)); + bpl->type_size = cpu_to_le32(FCELSSIZE); + bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64); + } + + elsiocb->cmd_dmabuf = pcmd; + elsiocb->bpl_dmabuf = pbuflist; + elsiocb->retry = retry; + elsiocb->vport = vport; + elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT; + + if (prsp) + list_add(&prsp->list, &pcmd->list); + if (expect_rsp) { + /* Xmit ELS command <elsCmd> to remote NPORT <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0116 Xmit ELS command x%x to remote " + "NPORT x%x I/O tag: x%x, port state:x%x " + "rpi x%x fc_flag:x%x\n", + elscmd, did, elsiocb->iotag, + vport->port_state, ndlp->nlp_rpi, + vport->fc_flag); + } else { + /* Xmit ELS response <elsCmd> to remote NPORT <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0117 Xmit ELS response x%x to remote " + "NPORT x%x I/O tag: x%x, size: x%x " + "port_state x%x rpi x%x fc_flag x%x\n", + elscmd, ndlp->nlp_DID, elsiocb->iotag, + cmd_size, vport->port_state, + ndlp->nlp_rpi, vport->fc_flag); + } + + return elsiocb; + +els_iocb_free_pbuf_exit: + if (expect_rsp) + lpfc_mbuf_free(phba, prsp->virt, prsp->phys); + kfree(pbuflist); + +els_iocb_free_prsp_exit: + lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); + kfree(prsp); + +els_iocb_free_pcmb_exit: + kfree(pcmd); + lpfc_sli_release_iocbq(phba, elsiocb); + return NULL; +} + +/** + * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues a fabric registration login for a @vport. An + * active ndlp node with Fabric_DID must already exist for this @vport. + * The routine invokes two mailbox commands to carry out fabric registration + * login through the HBA firmware: the first mailbox command requests the + * HBA to perform link configuration for the @vport; and the second mailbox + * command requests the HBA to perform the actual fabric registration login + * with the @vport. + * + * Return code + * 0 - successfully issued fabric registration login for @vport + * -ENXIO -- failed to issue fabric registration login for @vport + **/ +int +lpfc_issue_fabric_reglogin(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mbox; + struct lpfc_nodelist *ndlp; + struct serv_parm *sp; + int rc; + int err = 0; + + sp = &phba->fc_fabparam; + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp) { + err = 1; + goto fail; + } + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + err = 2; + goto fail; + } + + vport->port_state = LPFC_FABRIC_CFG_LINK; + lpfc_config_link(phba, mbox); + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->vport = vport; + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + err = 3; + goto fail_free_mbox; + } + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + err = 4; + goto fail; + } + rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, + ndlp->nlp_rpi); + if (rc) { + err = 5; + goto fail_free_mbox; + } + + mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login; + mbox->vport = vport; + /* increment the reference count on ndlp to hold reference + * for the callback routine. + */ + mbox->ctx_ndlp = lpfc_nlp_get(ndlp); + if (!mbox->ctx_ndlp) { + err = 6; + goto fail_free_mbox; + } + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + err = 7; + goto fail_issue_reg_login; + } + + return 0; + +fail_issue_reg_login: + /* decrement the reference count on ndlp just incremented + * for the failed mbox command. + */ + lpfc_nlp_put(ndlp); +fail_free_mbox: + lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); +fail: + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0249 Cannot issue Register Fabric login: Err %d\n", + err); + return -ENXIO; +} + +/** + * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for + * the @vport. This mailbox command is necessary for SLI4 port only. + * + * Return code + * 0 - successfully issued REG_VFI for @vport + * A failure code otherwise. + **/ +int +lpfc_issue_reg_vfi(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mboxq = NULL; + struct lpfc_nodelist *ndlp; + struct lpfc_dmabuf *dmabuf = NULL; + int rc = 0; + + /* move forward in case of SLI4 FC port loopback test and pt2pt mode */ + if ((phba->sli_rev == LPFC_SLI_REV4) && + !(phba->link_flag & LS_LOOPBACK_MODE) && + !(vport->fc_flag & FC_PT2PT)) { + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp) { + rc = -ENODEV; + goto fail; + } + } + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + rc = -ENOMEM; + goto fail; + } + + /* Supply CSP's only if we are fabric connect or pt-to-pt connect */ + if ((vport->fc_flag & FC_FABRIC) || (vport->fc_flag & FC_PT2PT)) { + rc = lpfc_mbox_rsrc_prep(phba, mboxq); + if (rc) { + rc = -ENOMEM; + goto fail_mbox; + } + dmabuf = mboxq->ctx_buf; + memcpy(dmabuf->virt, &phba->fc_fabparam, + sizeof(struct serv_parm)); + } + + vport->port_state = LPFC_FABRIC_CFG_LINK; + if (dmabuf) { + lpfc_reg_vfi(mboxq, vport, dmabuf->phys); + /* lpfc_reg_vfi memsets the mailbox. Restore the ctx_buf. */ + mboxq->ctx_buf = dmabuf; + } else { + lpfc_reg_vfi(mboxq, vport, 0); + } + + mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi; + mboxq->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + rc = -ENXIO; + goto fail_mbox; + } + return 0; + +fail_mbox: + lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED); +fail: + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0289 Issue Register VFI failed: Err %d\n", rc); + return rc; +} + +/** + * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for + * the @vport. This mailbox command is necessary for SLI4 port only. + * + * Return code + * 0 - successfully issued REG_VFI for @vport + * A failure code otherwise. + **/ +int +lpfc_issue_unreg_vfi(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + struct Scsi_Host *shost; + LPFC_MBOXQ_t *mboxq; + int rc; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "2556 UNREG_VFI mbox allocation failed" + "HBA state x%x\n", phba->pport->port_state); + return -ENOMEM; + } + + lpfc_unreg_vfi(mboxq, vport); + mboxq->vport = vport; + mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl; + + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "2557 UNREG_VFI issue mbox failed rc x%x " + "HBA state x%x\n", + rc, phba->pport->port_state); + mempool_free(mboxq, phba->mbox_mem_pool); + return -EIO; + } + + shost = lpfc_shost_from_vport(vport); + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VFI_REGISTERED; + spin_unlock_irq(shost->host_lock); + return 0; +} + +/** + * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean. + * @vport: pointer to a host virtual N_Port data structure. + * @sp: pointer to service parameter data structure. + * + * This routine is called from FLOGI/FDISC completion handler functions. + * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric + * node nodename is changed in the completion service parameter else return + * 0. This function also set flag in the vport data structure to delay + * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit + * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric + * node nodename is changed in the completion service parameter. + * + * Return code + * 0 - FCID and Fabric Nodename and Fabric portname is not changed. + * 1 - FCID or Fabric Nodename or Fabric portname is changed. + * + **/ +static uint8_t +lpfc_check_clean_addr_bit(struct lpfc_vport *vport, + struct serv_parm *sp) +{ + struct lpfc_hba *phba = vport->phba; + uint8_t fabric_param_changed = 0; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + if ((vport->fc_prevDID != vport->fc_myDID) || + memcmp(&vport->fabric_portname, &sp->portName, + sizeof(struct lpfc_name)) || + memcmp(&vport->fabric_nodename, &sp->nodeName, + sizeof(struct lpfc_name)) || + (vport->vport_flag & FAWWPN_PARAM_CHG)) { + fabric_param_changed = 1; + vport->vport_flag &= ~FAWWPN_PARAM_CHG; + } + /* + * Word 1 Bit 31 in common service parameter is overloaded. + * Word 1 Bit 31 in FLOGI request is multiple NPort request + * Word 1 Bit 31 in FLOGI response is clean address bit + * + * If fabric parameter is changed and clean address bit is + * cleared delay nport discovery if + * - vport->fc_prevDID != 0 (not initial discovery) OR + * - lpfc_delay_discovery module parameter is set. + */ + if (fabric_param_changed && !sp->cmn.clean_address_bit && + (vport->fc_prevDID || phba->cfg_delay_discovery)) { + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_DISC_DELAYED; + spin_unlock_irq(shost->host_lock); + } + + return fabric_param_changed; +} + + +/** + * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @sp: pointer to service parameter data structure. + * @ulp_word4: command response value + * + * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback + * function to handle the completion of a Fabric Login (FLOGI) into a fabric + * port in a fabric topology. It properly sets up the parameters to the @ndlp + * from the IOCB response. It also check the newly assigned N_Port ID to the + * @vport against the previously assigned N_Port ID. If it is different from + * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine + * is invoked on all the remaining nodes with the @vport to unregister the + * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin() + * is invoked to register login to the fabric. + * + * Return code + * 0 - Success (currently, always return 0) + **/ +static int +lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + struct serv_parm *sp, uint32_t ulp_word4) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + struct lpfc_nodelist *np; + struct lpfc_nodelist *next_np; + uint8_t fabric_param_changed; + + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_FABRIC; + spin_unlock_irq(shost->host_lock); + + phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov); + if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */ + phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000; + + phba->fc_edtovResol = sp->cmn.edtovResolution; + phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000; + + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_PUBLIC_LOOP; + spin_unlock_irq(shost->host_lock); + } + + vport->fc_myDID = ulp_word4 & Mask_DID; + memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name)); + memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name)); + ndlp->nlp_class_sup = 0; + if (sp->cls1.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS1; + if (sp->cls2.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS2; + if (sp->cls3.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS3; + if (sp->cls4.classValid) + ndlp->nlp_class_sup |= FC_COS_CLASS4; + ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | + sp->cmn.bbRcvSizeLsb; + + fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); + if (fabric_param_changed) { + /* Reset FDMI attribute masks based on config parameter */ + if (phba->cfg_enable_SmartSAN || + (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) { + /* Setup appropriate attribute masks */ + vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR; + if (phba->cfg_enable_SmartSAN) + vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR; + else + vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR; + } else { + vport->fdmi_hba_mask = 0; + vport->fdmi_port_mask = 0; + } + + } + memcpy(&vport->fabric_portname, &sp->portName, + sizeof(struct lpfc_name)); + memcpy(&vport->fabric_nodename, &sp->nodeName, + sizeof(struct lpfc_name)); + memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); + + if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { + if (sp->cmn.response_multiple_NPort) { + lpfc_printf_vlog(vport, KERN_WARNING, + LOG_ELS | LOG_VPORT, + "1816 FLOGI NPIV supported, " + "response data 0x%x\n", + sp->cmn.response_multiple_NPort); + spin_lock_irq(&phba->hbalock); + phba->link_flag |= LS_NPIV_FAB_SUPPORTED; + spin_unlock_irq(&phba->hbalock); + } else { + /* Because we asked f/w for NPIV it still expects us + to call reg_vnpid at least for the physical host */ + lpfc_printf_vlog(vport, KERN_WARNING, + LOG_ELS | LOG_VPORT, + "1817 Fabric does not support NPIV " + "- configuring single port mode.\n"); + spin_lock_irq(&phba->hbalock); + phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; + spin_unlock_irq(&phba->hbalock); + } + } + + /* + * For FC we need to do some special processing because of the SLI + * Port's default settings of the Common Service Parameters. + */ + if ((phba->sli_rev == LPFC_SLI_REV4) && + (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) { + /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ + if (fabric_param_changed) + lpfc_unregister_fcf_prep(phba); + + /* This should just update the VFI CSPs*/ + if (vport->fc_flag & FC_VFI_REGISTERED) + lpfc_issue_reg_vfi(vport); + } + + if (fabric_param_changed && + !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { + + /* If our NportID changed, we need to ensure all + * remaining NPORTs get unreg_login'ed. + */ + list_for_each_entry_safe(np, next_np, + &vport->fc_nodes, nlp_listp) { + if ((np->nlp_state != NLP_STE_NPR_NODE) || + !(np->nlp_flag & NLP_NPR_ADISC)) + continue; + spin_lock_irq(&np->lock); + np->nlp_flag &= ~NLP_NPR_ADISC; + spin_unlock_irq(&np->lock); + lpfc_unreg_rpi(vport, np); + } + lpfc_cleanup_pending_mbox(vport); + + if (phba->sli_rev == LPFC_SLI_REV4) { + lpfc_sli4_unreg_all_rpis(vport); + lpfc_mbx_unreg_vpi(vport); + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; + spin_unlock_irq(shost->host_lock); + } + + /* + * For SLI3 and SLI4, the VPI needs to be reregistered in + * response to this fabric parameter change event. + */ + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + } else if ((phba->sli_rev == LPFC_SLI_REV4) && + !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { + /* + * Driver needs to re-reg VPI in order for f/w + * to update the MAC address. + */ + lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); + lpfc_register_new_vport(phba, vport, ndlp); + return 0; + } + + if (phba->sli_rev < LPFC_SLI_REV4) { + lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE); + if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED && + vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) + lpfc_register_new_vport(phba, vport, ndlp); + else + lpfc_issue_fabric_reglogin(vport); + } else { + ndlp->nlp_type |= NLP_FABRIC; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); + if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) && + (vport->vpi_state & LPFC_VPI_REGISTERED)) { + lpfc_start_fdiscs(phba); + lpfc_do_scr_ns_plogi(phba, vport); + } else if (vport->fc_flag & FC_VFI_REGISTERED) + lpfc_issue_init_vpi(vport); + else { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3135 Need register VFI: (x%x/%x)\n", + vport->fc_prevDID, vport->fc_myDID); + lpfc_issue_reg_vfi(vport); + } + } + return 0; +} + +/** + * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @sp: pointer to service parameter data structure. + * + * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback + * function to handle the completion of a Fabric Login (FLOGI) into an N_Port + * in a point-to-point topology. First, the @vport's N_Port Name is compared + * with the received N_Port Name: if the @vport's N_Port Name is greater than + * the received N_Port Name lexicographically, this node shall assign local + * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and + * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise, + * this node shall just wait for the remote node to issue PLOGI and assign + * N_Port IDs. + * + * Return code + * 0 - Success + * -ENXIO - Fail + **/ +static int +lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + struct serv_parm *sp) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mbox; + int rc; + + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + vport->fc_flag |= FC_PT2PT; + spin_unlock_irq(shost->host_lock); + + /* If we are pt2pt with another NPort, force NPIV off! */ + phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; + + /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */ + if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) { + lpfc_unregister_fcf_prep(phba); + + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VFI_REGISTERED; + spin_unlock_irq(shost->host_lock); + phba->fc_topology_changed = 0; + } + + rc = memcmp(&vport->fc_portname, &sp->portName, + sizeof(vport->fc_portname)); + + if (rc >= 0) { + /* This side will initiate the PLOGI */ + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_PT2PT_PLOGI; + spin_unlock_irq(shost->host_lock); + + /* + * N_Port ID cannot be 0, set our Id to LocalID + * the other side will be RemoteID. + */ + + /* not equal */ + if (rc) + vport->fc_myDID = PT2PT_LocalID; + + /* If not registered with a transport, decrement ndlp reference + * count indicating that ndlp can be safely released when other + * references are removed. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) + lpfc_nlp_put(ndlp); + + ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID); + if (!ndlp) { + /* + * Cannot find existing Fabric ndlp, so allocate a + * new one + */ + ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID); + if (!ndlp) + goto fail; + } + + memcpy(&ndlp->nlp_portname, &sp->portName, + sizeof(struct lpfc_name)); + memcpy(&ndlp->nlp_nodename, &sp->nodeName, + sizeof(struct lpfc_name)); + /* Set state will put ndlp onto node list if not already done */ + lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + goto fail; + + lpfc_config_link(phba, mbox); + + mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; + mbox->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + goto fail; + } + } else { + /* This side will wait for the PLOGI. If not registered with + * a transport, decrement node reference count indicating that + * ndlp can be released when other references are removed. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) + lpfc_nlp_put(ndlp); + + /* Start discovery - this should just do CLEAR_LA */ + lpfc_disc_start(vport); + } + + return 0; +fail: + return -ENXIO; +} + +/** + * lpfc_cmpl_els_flogi - Completion callback function for flogi + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the top-level completion callback function for issuing + * a Fabric Login (FLOGI) command. If the response IOCB reported error, + * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If + * retry has been made (either immediately or delayed with lpfc_els_retry() + * returning 1), the command IOCB will be released and function returned. + * If the retry attempt has been given up (possibly reach the maximum + * number of retries), one additional decrement of ndlp reference shall be + * invoked before going out after releasing the command IOCB. This will + * actually release the remote node (Note, lpfc_els_free_iocb() will also + * invoke one decrement of ndlp reference count). If no error reported in + * the IOCB status, the command Port ID field is used to determine whether + * this is a point-to-point topology or a fabric topology: if the Port ID + * field is assigned, it is a fabric topology; otherwise, it is a + * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or + * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the + * specific topology completion conditions. + **/ +static void +lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + IOCB_t *irsp; + struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; + struct serv_parm *sp; + uint16_t fcf_index; + int rc; + u32 ulp_status, ulp_word4, tmo; + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(vport)) { + /* One additional decrement on node reference count to + * trigger the release of the node + */ + if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) + lpfc_nlp_put(ndlp); + goto out; + } + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "FLOGI cmpl: status:x%x/x%x state:x%x", + ulp_status, ulp_word4, + vport->port_state); + + if (ulp_status) { + /* + * In case of FIP mode, perform roundrobin FCF failover + * due to new FCF discovery + */ + if ((phba->hba_flag & HBA_FIP_SUPPORT) && + (phba->fcf.fcf_flag & FCF_DISCOVERY)) { + if (phba->link_state < LPFC_LINK_UP) + goto stop_rr_fcf_flogi; + if ((phba->fcoe_cvl_eventtag_attn == + phba->fcoe_cvl_eventtag) && + (ulp_status == IOSTAT_LOCAL_REJECT) && + ((ulp_word4 & IOERR_PARAM_MASK) == + IOERR_SLI_ABORTED)) + goto stop_rr_fcf_flogi; + else + phba->fcoe_cvl_eventtag_attn = + phba->fcoe_cvl_eventtag; + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS, + "2611 FLOGI failed on FCF (x%x), " + "status:x%x/x%x, tmo:x%x, perform " + "roundrobin FCF failover\n", + phba->fcf.current_rec.fcf_indx, + ulp_status, ulp_word4, tmo); + lpfc_sli4_set_fcf_flogi_fail(phba, + phba->fcf.current_rec.fcf_indx); + fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba); + rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index); + if (rc) + goto out; + } + +stop_rr_fcf_flogi: + /* FLOGI failure */ + if (!(ulp_status == IOSTAT_LOCAL_REJECT && + ((ulp_word4 & IOERR_PARAM_MASK) == + IOERR_LOOP_OPEN_FAILURE))) + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2858 FLOGI failure Status:x%x/x%x TMO" + ":x%x Data x%x x%x\n", + ulp_status, ulp_word4, tmo, + phba->hba_flag, phba->fcf.fcf_flag); + + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) + goto out; + + lpfc_printf_vlog(vport, KERN_WARNING, LOG_TRACE_EVENT, + "0150 FLOGI failure Status:x%x/x%x " + "xri x%x TMO:x%x refcnt %d\n", + ulp_status, ulp_word4, cmdiocb->sli4_xritag, + tmo, kref_read(&ndlp->kref)); + + /* If this is not a loop open failure, bail out */ + if (!(ulp_status == IOSTAT_LOCAL_REJECT && + ((ulp_word4 & IOERR_PARAM_MASK) == + IOERR_LOOP_OPEN_FAILURE))) { + /* FLOGI failure */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0100 FLOGI failure Status:x%x/x%x " + "TMO:x%x\n", + ulp_status, ulp_word4, tmo); + goto flogifail; + } + + /* FLOGI failed, so there is no fabric */ + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP | + FC_PT2PT_NO_NVME); + spin_unlock_irq(shost->host_lock); + + /* If private loop, then allow max outstanding els to be + * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no + * alpa map would take too long otherwise. + */ + if (phba->alpa_map[0] == 0) + vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS; + if ((phba->sli_rev == LPFC_SLI_REV4) && + (!(vport->fc_flag & FC_VFI_REGISTERED) || + (vport->fc_prevDID != vport->fc_myDID) || + phba->fc_topology_changed)) { + if (vport->fc_flag & FC_VFI_REGISTERED) { + if (phba->fc_topology_changed) { + lpfc_unregister_fcf_prep(phba); + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VFI_REGISTERED; + spin_unlock_irq(shost->host_lock); + phba->fc_topology_changed = 0; + } else { + lpfc_sli4_unreg_all_rpis(vport); + } + } + + /* Do not register VFI if the driver aborted FLOGI */ + if (!lpfc_error_lost_link(ulp_status, ulp_word4)) + lpfc_issue_reg_vfi(vport); + + lpfc_nlp_put(ndlp); + goto out; + } + goto flogifail; + } + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VPORT_CVL_RCVD; + vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; + spin_unlock_irq(shost->host_lock); + + /* + * The FLogI succeeded. Sync the data for the CPU before + * accessing it. + */ + prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + sp = prsp->virt + sizeof(uint32_t); + + /* FLOGI completes successfully */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0101 FLOGI completes successfully, I/O tag:x%x " + "xri x%x Data: x%x x%x x%x x%x x%x x%x x%x %d\n", + cmdiocb->iotag, cmdiocb->sli4_xritag, + ulp_word4, sp->cmn.e_d_tov, + sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution, + vport->port_state, vport->fc_flag, + sp->cmn.priority_tagging, kref_read(&ndlp->kref)); + + if (sp->cmn.priority_tagging) + vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA | + LPFC_VMID_TYPE_PRIO); + + if (vport->port_state == LPFC_FLOGI) { + /* + * If Common Service Parameters indicate Nport + * we are point to point, if Fport we are Fabric. + */ + if (sp->cmn.fPort) + rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, + ulp_word4); + else if (!(phba->hba_flag & HBA_FCOE_MODE)) + rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp); + else { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2831 FLOGI response with cleared Fabric " + "bit fcf_index 0x%x " + "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x " + "Fabric Name " + "%02x%02x%02x%02x%02x%02x%02x%02x\n", + phba->fcf.current_rec.fcf_indx, + phba->fcf.current_rec.switch_name[0], + phba->fcf.current_rec.switch_name[1], + phba->fcf.current_rec.switch_name[2], + phba->fcf.current_rec.switch_name[3], + phba->fcf.current_rec.switch_name[4], + phba->fcf.current_rec.switch_name[5], + phba->fcf.current_rec.switch_name[6], + phba->fcf.current_rec.switch_name[7], + phba->fcf.current_rec.fabric_name[0], + phba->fcf.current_rec.fabric_name[1], + phba->fcf.current_rec.fabric_name[2], + phba->fcf.current_rec.fabric_name[3], + phba->fcf.current_rec.fabric_name[4], + phba->fcf.current_rec.fabric_name[5], + phba->fcf.current_rec.fabric_name[6], + phba->fcf.current_rec.fabric_name[7]); + + lpfc_nlp_put(ndlp); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); + spin_unlock_irq(&phba->hbalock); + phba->fcf.fcf_redisc_attempted = 0; /* reset */ + goto out; + } + if (!rc) { + /* Mark the FCF discovery process done */ + if (phba->hba_flag & HBA_FIP_SUPPORT) + lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | + LOG_ELS, + "2769 FLOGI to FCF (x%x) " + "completed successfully\n", + phba->fcf.current_rec.fcf_indx); + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); + spin_unlock_irq(&phba->hbalock); + phba->fcf.fcf_redisc_attempted = 0; /* reset */ + goto out; + } + } else if (vport->port_state > LPFC_FLOGI && + vport->fc_flag & FC_PT2PT) { + /* + * In a p2p topology, it is possible that discovery has + * already progressed, and this completion can be ignored. + * Recheck the indicated topology. + */ + if (!sp->cmn.fPort) + goto out; + } + +flogifail: + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DISCOVERY; + spin_unlock_irq(&phba->hbalock); + + if (!lpfc_error_lost_link(ulp_status, ulp_word4)) { + /* FLOGI failed, so just use loop map to make discovery list */ + lpfc_disc_list_loopmap(vport); + + /* Start discovery */ + lpfc_disc_start(vport); + } else if (((ulp_status != IOSTAT_LOCAL_REJECT) || + (((ulp_word4 & IOERR_PARAM_MASK) != + IOERR_SLI_ABORTED) && + ((ulp_word4 & IOERR_PARAM_MASK) != + IOERR_SLI_DOWN))) && + (phba->link_state != LPFC_CLEAR_LA)) { + /* If FLOGI failed enable link interrupt. */ + lpfc_issue_clear_la(phba, vport); + } +out: + phba->hba_flag &= ~HBA_FLOGI_OUTSTANDING; + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +/** + * lpfc_cmpl_els_link_down - Completion callback function for ELS command + * aborted during a link down + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + */ +static void +lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + uint32_t *pcmd; + uint32_t cmd; + u32 ulp_status, ulp_word4; + + pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt; + cmd = *pcmd; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "6445 ELS completes after LINK_DOWN: " + " Status %x/%x cmd x%x flg x%x\n", + ulp_status, ulp_word4, cmd, + cmdiocb->cmd_flag); + + if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) { + cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC; + atomic_dec(&phba->fabric_iocb_count); + } + lpfc_els_free_iocb(phba, cmdiocb); +} + +/** + * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @retry: number of retries to the command IOCB. + * + * This routine issues a Fabric Login (FLOGI) Request ELS command + * for a @vport. The initiator service parameters are put into the payload + * of the FLOGI Request IOCB and the top-level callback function pointer + * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback + * function field. The lpfc_issue_fabric_iocb routine is invoked to send + * out FLOGI ELS command with one outstanding fabric IOCB at a time. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the FLOGI ELS command. + * + * Return code + * 0 - successfully issued flogi iocb for @vport + * 1 - failed to issue flogi iocb for @vport + **/ +static int +lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + struct serv_parm *sp; + union lpfc_wqe128 *wqe = NULL; + IOCB_t *icmd = NULL; + struct lpfc_iocbq *elsiocb; + struct lpfc_iocbq defer_flogi_acc; + u8 *pcmd, ct; + uint16_t cmdsize; + uint32_t tmo, did; + int rc; + + cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_FLOGI); + + if (!elsiocb) + return 1; + + wqe = &elsiocb->wqe; + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + icmd = &elsiocb->iocb; + + /* For FLOGI request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI; + pcmd += sizeof(uint32_t); + memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); + sp = (struct serv_parm *) pcmd; + + /* Setup CSPs accordingly for Fabric */ + sp->cmn.e_d_tov = 0; + sp->cmn.w2.r_a_tov = 0; + sp->cmn.virtual_fabric_support = 0; + sp->cls1.classValid = 0; + if (sp->cmn.fcphLow < FC_PH3) + sp->cmn.fcphLow = FC_PH3; + if (sp->cmn.fcphHigh < FC_PH3) + sp->cmn.fcphHigh = FC_PH3; + + /* Determine if switch supports priority tagging */ + if (phba->cfg_vmid_priority_tagging) { + sp->cmn.priority_tagging = 1; + /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */ + if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) { + memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn, + sizeof(phba->wwpn)); + memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn, + sizeof(phba->wwnn)); + } + } + + if (phba->sli_rev == LPFC_SLI_REV4) { + if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_IF_TYPE_0) { + /* FLOGI needs to be 3 for WQE FCFI */ + ct = SLI4_CT_FCFI; + bf_set(wqe_ct, &wqe->els_req.wqe_com, ct); + + /* Set the fcfi to the fcfi we registered with */ + bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com, + phba->fcf.fcfi); + } + + /* Can't do SLI4 class2 without support sequence coalescing */ + sp->cls2.classValid = 0; + sp->cls2.seqDelivery = 0; + } else { + /* Historical, setting sequential-delivery bit for SLI3 */ + sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0; + sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0; + if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { + sp->cmn.request_multiple_Nport = 1; + /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */ + icmd->ulpCt_h = 1; + icmd->ulpCt_l = 0; + } else { + sp->cmn.request_multiple_Nport = 0; + } + + if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) { + icmd->un.elsreq64.myID = 0; + icmd->un.elsreq64.fl = 1; + } + } + + tmo = phba->fc_ratov; + phba->fc_ratov = LPFC_DISC_FLOGI_TMO; + lpfc_set_disctmo(vport); + phba->fc_ratov = tmo; + + phba->fc_stat.elsXmitFLOGI++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue FLOGI: opt:x%x", + phba->sli3_options, 0, 0); + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_issue_fabric_iocb(phba, elsiocb); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + phba->hba_flag |= (HBA_FLOGI_ISSUED | HBA_FLOGI_OUTSTANDING); + + /* Clear external loopback plug detected flag */ + phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; + + /* Check for a deferred FLOGI ACC condition */ + if (phba->defer_flogi_acc_flag) { + /* lookup ndlp for received FLOGI */ + ndlp = lpfc_findnode_did(vport, 0); + if (!ndlp) + return 0; + + did = vport->fc_myDID; + vport->fc_myDID = Fabric_DID; + + memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq)); + + if (phba->sli_rev == LPFC_SLI_REV4) { + bf_set(wqe_ctxt_tag, + &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com, + phba->defer_flogi_acc_rx_id); + bf_set(wqe_rcvoxid, + &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com, + phba->defer_flogi_acc_ox_id); + } else { + icmd = &defer_flogi_acc.iocb; + icmd->ulpContext = phba->defer_flogi_acc_rx_id; + icmd->unsli3.rcvsli3.ox_id = + phba->defer_flogi_acc_ox_id; + } + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3354 Xmit deferred FLOGI ACC: rx_id: x%x," + " ox_id: x%x, hba_flag x%x\n", + phba->defer_flogi_acc_rx_id, + phba->defer_flogi_acc_ox_id, phba->hba_flag); + + /* Send deferred FLOGI ACC */ + lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc, + ndlp, NULL); + + phba->defer_flogi_acc_flag = false; + vport->fc_myDID = did; + + /* Decrement ndlp reference count to indicate the node can be + * released when other references are removed. + */ + lpfc_nlp_put(ndlp); + } + + return 0; +} + +/** + * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs + * @phba: pointer to lpfc hba data structure. + * + * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs + * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq + * list and issues an abort IOCB commond on each outstanding IOCB that + * contains a active Fabric_DID ndlp. Note that this function is to issue + * the abort IOCB command on all the outstanding IOCBs, thus when this + * function returns, it does not guarantee all the IOCBs are actually aborted. + * + * Return code + * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0) + **/ +int +lpfc_els_abort_flogi(struct lpfc_hba *phba) +{ + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *iocb, *next_iocb; + struct lpfc_nodelist *ndlp; + u32 ulp_command; + + /* Abort outstanding I/O on NPort <nlp_DID> */ + lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY, + "0201 Abort outstanding I/O on NPort x%x\n", + Fabric_DID); + + pring = lpfc_phba_elsring(phba); + if (unlikely(!pring)) + return -EIO; + + /* + * Check the txcmplq for an iocb that matches the nport the driver is + * searching for. + */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { + ulp_command = get_job_cmnd(phba, iocb); + if (ulp_command == CMD_ELS_REQUEST64_CR) { + ndlp = iocb->ndlp; + if (ndlp && ndlp->nlp_DID == Fabric_DID) { + if ((phba->pport->fc_flag & FC_PT2PT) && + !(phba->pport->fc_flag & FC_PT2PT_PLOGI)) + iocb->fabric_cmd_cmpl = + lpfc_ignore_els_cmpl; + lpfc_sli_issue_abort_iotag(phba, pring, iocb, + NULL); + } + } + } + /* Make sure HBA is alive */ + lpfc_issue_hb_tmo(phba); + + spin_unlock_irq(&phba->hbalock); + + return 0; +} + +/** + * lpfc_initial_flogi - Issue an initial fabric login for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues an initial Fabric Login (FLOGI) for the @vport + * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from + * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and + * put it into the @vport's ndlp list. If an inactive ndlp found on the list, + * it will just be enabled and made active. The lpfc_issue_els_flogi() routine + * is then invoked with the @vport and the ndlp to perform the FLOGI for the + * @vport. + * + * Return code + * 0 - failed to issue initial flogi for @vport + * 1 - successfully issued initial flogi for @vport + **/ +int +lpfc_initial_flogi(struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp; + + vport->port_state = LPFC_FLOGI; + lpfc_set_disctmo(vport); + + /* First look for the Fabric ndlp */ + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp) { + /* Cannot find existing Fabric ndlp, so allocate a new one */ + ndlp = lpfc_nlp_init(vport, Fabric_DID); + if (!ndlp) + return 0; + /* Set the node type */ + ndlp->nlp_type |= NLP_FABRIC; + + /* Put ndlp onto node list */ + lpfc_enqueue_node(vport, ndlp); + } + + /* Reset the Fabric flag, topology change may have happened */ + vport->fc_flag &= ~FC_FABRIC; + if (lpfc_issue_els_flogi(vport, ndlp, 0)) { + /* A node reference should be retained while registered with a + * transport or dev-loss-evt work is pending. + * Otherwise, decrement node reference to trigger release. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && + !(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) + lpfc_nlp_put(ndlp); + return 0; + } + return 1; +} + +/** + * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues an initial Fabric Discover (FDISC) for the @vport + * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from + * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and + * put it into the @vport's ndlp list. If an inactive ndlp found on the list, + * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine + * is then invoked with the @vport and the ndlp to perform the FDISC for the + * @vport. + * + * Return code + * 0 - failed to issue initial fdisc for @vport + * 1 - successfully issued initial fdisc for @vport + **/ +int +lpfc_initial_fdisc(struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp; + + /* First look for the Fabric ndlp */ + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp) { + /* Cannot find existing Fabric ndlp, so allocate a new one */ + ndlp = lpfc_nlp_init(vport, Fabric_DID); + if (!ndlp) + return 0; + + /* NPIV is only supported in Fabrics. */ + ndlp->nlp_type |= NLP_FABRIC; + + /* Put ndlp onto node list */ + lpfc_enqueue_node(vport, ndlp); + } + + if (lpfc_issue_els_fdisc(vport, ndlp, 0)) { + /* A node reference should be retained while registered with a + * transport or dev-loss-evt work is pending. + * Otherwise, decrement node reference to trigger release. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && + !(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) + lpfc_nlp_put(ndlp); + return 0; + } + return 1; +} + +/** + * lpfc_more_plogi - Check and issue remaining plogis for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine checks whether there are more remaining Port Logins + * (PLOGI) to be issued for the @vport. If so, it will invoke the routine + * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes + * to issue ELS PLOGIs up to the configured discover threads with the + * @vport (@vport->cfg_discovery_threads). The function also decrement + * the @vport's num_disc_node by 1 if it is not already 0. + **/ +void +lpfc_more_plogi(struct lpfc_vport *vport) +{ + if (vport->num_disc_nodes) + vport->num_disc_nodes--; + + /* Continue discovery with <num_disc_nodes> PLOGIs to go */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0232 Continue discovery with %d PLOGIs to go " + "Data: x%x x%x x%x\n", + vport->num_disc_nodes, vport->fc_plogi_cnt, + vport->fc_flag, vport->port_state); + /* Check to see if there are more PLOGIs to be sent */ + if (vport->fc_flag & FC_NLP_MORE) + /* go thru NPR nodes and issue any remaining ELS PLOGIs */ + lpfc_els_disc_plogi(vport); + + return; +} + +/** + * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp + * @phba: pointer to lpfc hba data structure. + * @prsp: pointer to response IOCB payload. + * @ndlp: pointer to a node-list data structure. + * + * This routine checks and indicates whether the WWPN of an N_Port, retrieved + * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt. + * The following cases are considered N_Port confirmed: + * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches + * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but + * it does not have WWPN assigned either. If the WWPN is confirmed, the + * pointer to the @ndlp will be returned. If the WWPN is not confirmed: + * 1) if there is a node on vport list other than the @ndlp with the same + * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked + * on that node to release the RPI associated with the node; 2) if there is + * no node found on vport list with the same WWPN of the N_Port PLOGI logged + * into, a new node shall be allocated (or activated). In either case, the + * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall + * be released and the new_ndlp shall be put on to the vport node list and + * its pointer returned as the confirmed node. + * + * Note that before the @ndlp got "released", the keepDID from not-matching + * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID + * of the @ndlp. This is because the release of @ndlp is actually to put it + * into an inactive state on the vport node list and the vport node list + * management algorithm does not allow two node with a same DID. + * + * Return code + * pointer to the PLOGI N_Port @ndlp + **/ +static struct lpfc_nodelist * +lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_vport *vport = ndlp->vport; + struct lpfc_nodelist *new_ndlp; + struct serv_parm *sp; + uint8_t name[sizeof(struct lpfc_name)]; + uint32_t keepDID = 0, keep_nlp_flag = 0; + uint32_t keep_new_nlp_flag = 0; + uint16_t keep_nlp_state; + u32 keep_nlp_fc4_type = 0; + struct lpfc_nvme_rport *keep_nrport = NULL; + unsigned long *active_rrqs_xri_bitmap = NULL; + + /* Fabric nodes can have the same WWPN so we don't bother searching + * by WWPN. Just return the ndlp that was given to us. + */ + if (ndlp->nlp_type & NLP_FABRIC) + return ndlp; + + sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t)); + memset(name, 0, sizeof(struct lpfc_name)); + + /* Now we find out if the NPort we are logging into, matches the WWPN + * we have for that ndlp. If not, we have some work to do. + */ + new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName); + + /* return immediately if the WWPN matches ndlp */ + if (!new_ndlp || (new_ndlp == ndlp)) + return ndlp; + + /* + * Unregister from backend if not done yet. Could have been skipped + * due to ADISC + */ + lpfc_nlp_unreg_node(vport, new_ndlp); + + if (phba->sli_rev == LPFC_SLI_REV4) { + active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool, + GFP_KERNEL); + if (active_rrqs_xri_bitmap) + memset(active_rrqs_xri_bitmap, 0, + phba->cfg_rrq_xri_bitmap_sz); + } + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, + "3178 PLOGI confirm: ndlp x%x x%x x%x: " + "new_ndlp x%x x%x x%x\n", + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type, + (new_ndlp ? new_ndlp->nlp_DID : 0), + (new_ndlp ? new_ndlp->nlp_flag : 0), + (new_ndlp ? new_ndlp->nlp_fc4_type : 0)); + + keepDID = new_ndlp->nlp_DID; + + if (phba->sli_rev == LPFC_SLI_REV4 && active_rrqs_xri_bitmap) + memcpy(active_rrqs_xri_bitmap, new_ndlp->active_rrqs_xri_bitmap, + phba->cfg_rrq_xri_bitmap_sz); + + /* At this point in this routine, we know new_ndlp will be + * returned. however, any previous GID_FTs that were done + * would have updated nlp_fc4_type in ndlp, so we must ensure + * new_ndlp has the right value. + */ + if (vport->fc_flag & FC_FABRIC) { + keep_nlp_fc4_type = new_ndlp->nlp_fc4_type; + new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type; + } + + lpfc_unreg_rpi(vport, new_ndlp); + new_ndlp->nlp_DID = ndlp->nlp_DID; + new_ndlp->nlp_prev_state = ndlp->nlp_prev_state; + if (phba->sli_rev == LPFC_SLI_REV4) + memcpy(new_ndlp->active_rrqs_xri_bitmap, + ndlp->active_rrqs_xri_bitmap, + phba->cfg_rrq_xri_bitmap_sz); + + /* Lock both ndlps */ + spin_lock_irq(&ndlp->lock); + spin_lock_irq(&new_ndlp->lock); + keep_new_nlp_flag = new_ndlp->nlp_flag; + keep_nlp_flag = ndlp->nlp_flag; + new_ndlp->nlp_flag = ndlp->nlp_flag; + + /* if new_ndlp had NLP_UNREG_INP set, keep it */ + if (keep_new_nlp_flag & NLP_UNREG_INP) + new_ndlp->nlp_flag |= NLP_UNREG_INP; + else + new_ndlp->nlp_flag &= ~NLP_UNREG_INP; + + /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */ + if (keep_new_nlp_flag & NLP_RPI_REGISTERED) + new_ndlp->nlp_flag |= NLP_RPI_REGISTERED; + else + new_ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; + + /* + * Retain the DROPPED flag. This will take care of the init + * refcount when affecting the state change + */ + if (keep_new_nlp_flag & NLP_DROPPED) + new_ndlp->nlp_flag |= NLP_DROPPED; + else + new_ndlp->nlp_flag &= ~NLP_DROPPED; + + ndlp->nlp_flag = keep_new_nlp_flag; + + /* if ndlp had NLP_UNREG_INP set, keep it */ + if (keep_nlp_flag & NLP_UNREG_INP) + ndlp->nlp_flag |= NLP_UNREG_INP; + else + ndlp->nlp_flag &= ~NLP_UNREG_INP; + + /* if ndlp had NLP_RPI_REGISTERED set, keep it */ + if (keep_nlp_flag & NLP_RPI_REGISTERED) + ndlp->nlp_flag |= NLP_RPI_REGISTERED; + else + ndlp->nlp_flag &= ~NLP_RPI_REGISTERED; + + /* + * Retain the DROPPED flag. This will take care of the init + * refcount when affecting the state change + */ + if (keep_nlp_flag & NLP_DROPPED) + ndlp->nlp_flag |= NLP_DROPPED; + else + ndlp->nlp_flag &= ~NLP_DROPPED; + + spin_unlock_irq(&new_ndlp->lock); + spin_unlock_irq(&ndlp->lock); + + /* Set nlp_states accordingly */ + keep_nlp_state = new_ndlp->nlp_state; + lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state); + + /* interchange the nvme remoteport structs */ + keep_nrport = new_ndlp->nrport; + new_ndlp->nrport = ndlp->nrport; + + /* Move this back to NPR state */ + if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) { + /* The ndlp doesn't have a portname yet, but does have an + * NPort ID. The new_ndlp portname matches the Rport's + * portname. Reinstantiate the new_ndlp and reset the ndlp. + */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3179 PLOGI confirm NEW: %x %x\n", + new_ndlp->nlp_DID, keepDID); + + /* Two ndlps cannot have the same did on the nodelist. + * The KeepDID and keep_nlp_fc4_type need to be swapped + * because ndlp is inflight with no WWPN. + */ + ndlp->nlp_DID = keepDID; + ndlp->nlp_fc4_type = keep_nlp_fc4_type; + lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); + if (phba->sli_rev == LPFC_SLI_REV4 && + active_rrqs_xri_bitmap) + memcpy(ndlp->active_rrqs_xri_bitmap, + active_rrqs_xri_bitmap, + phba->cfg_rrq_xri_bitmap_sz); + + } else { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3180 PLOGI confirm SWAP: %x %x\n", + new_ndlp->nlp_DID, keepDID); + + lpfc_unreg_rpi(vport, ndlp); + + /* The ndlp and new_ndlp both have WWPNs but are swapping + * NPort Ids and attributes. + */ + ndlp->nlp_DID = keepDID; + ndlp->nlp_fc4_type = keep_nlp_fc4_type; + + if (phba->sli_rev == LPFC_SLI_REV4 && + active_rrqs_xri_bitmap) + memcpy(ndlp->active_rrqs_xri_bitmap, + active_rrqs_xri_bitmap, + phba->cfg_rrq_xri_bitmap_sz); + + /* Since we are switching over to the new_ndlp, + * reset the old ndlp state + */ + if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || + (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) + keep_nlp_state = NLP_STE_NPR_NODE; + lpfc_nlp_set_state(vport, ndlp, keep_nlp_state); + ndlp->nrport = keep_nrport; + } + + /* + * If ndlp is not associated with any rport we can drop it here else + * let dev_loss_tmo_callbk trigger DEVICE_RM event + */ + if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE)) + lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); + + if (phba->sli_rev == LPFC_SLI_REV4 && + active_rrqs_xri_bitmap) + mempool_free(active_rrqs_xri_bitmap, + phba->active_rrq_pool); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE, + "3173 PLOGI confirm exit: new_ndlp x%x x%x x%x\n", + new_ndlp->nlp_DID, new_ndlp->nlp_flag, + new_ndlp->nlp_fc4_type); + + return new_ndlp; +} + +/** + * lpfc_end_rscn - Check and handle more rscn for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine checks whether more Registration State Change + * Notifications (RSCNs) came in while the discovery state machine was in + * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be + * invoked to handle the additional RSCNs for the @vport. Otherwise, the + * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of + * handling the RSCNs. + **/ +void +lpfc_end_rscn(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + if (vport->fc_flag & FC_RSCN_MODE) { + /* + * Check to see if more RSCNs came in while we were + * processing this one. + */ + if (vport->fc_rscn_id_cnt || + (vport->fc_flag & FC_RSCN_DISCOVERY) != 0) + lpfc_els_handle_rscn(vport); + else { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_RSCN_MODE; + spin_unlock_irq(shost->host_lock); + } + } +} + +/** + * lpfc_cmpl_els_rrq - Completion handled for els RRQs. + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine will call the clear rrq function to free the rrq and + * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not + * exist then the clear_rrq is still called because the rrq needs to + * be freed. + **/ + +static void +lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_node_rrq *rrq; + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + rrq = cmdiocb->context_un.rrq; + cmdiocb->rsp_iocb = rspiocb; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "RRQ cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, + get_job_els_rsp64_did(phba, cmdiocb)); + + + /* rrq completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2880 RRQ completes to DID x%x " + "Data: x%x x%x x%x x%x x%x\n", + ndlp->nlp_DID, ulp_status, ulp_word4, + get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid); + + if (ulp_status) { + /* Check for retry */ + /* RRQ failed Don't print the vport to vport rjts */ + if (ulp_status != IOSTAT_LS_RJT || + (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) && + ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) || + (phba)->pport->cfg_log_verbose & LOG_ELS) + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2881 RRQ failure DID:%06X Status:" + "x%x/x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4); + } + + lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + return; +} +/** + * lpfc_cmpl_els_plogi - Completion callback function for plogi + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function for issuing the Port + * Login (PLOGI) command. For PLOGI completion, there must be an active + * ndlp on the vport node list that matches the remote node ID from the + * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply + * ignored and command IOCB released. The PLOGI response IOCB status is + * checked for error conditions. If there is error status reported, PLOGI + * retry shall be attempted by invoking the lpfc_els_retry() routine. + * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on + * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine + * (DSM) is set for this PLOGI completion. Finally, it checks whether + * there are additional N_Port nodes with the vport that need to perform + * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition + * PLOGIs. + **/ +static void +lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + IOCB_t *irsp; + struct lpfc_nodelist *ndlp, *free_ndlp; + struct lpfc_dmabuf *prsp; + int disc; + struct serv_parm *sp = NULL; + u32 ulp_status, ulp_word4, did, iotag; + bool release_node = false; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->rsp_iocb = rspiocb; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + did = get_job_els_rsp64_did(phba, cmdiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + iotag = get_wqe_reqtag(cmdiocb); + } else { + irsp = &rspiocb->iocb; + iotag = irsp->ulpIoTag; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "PLOGI cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + + ndlp = lpfc_findnode_did(vport, did); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0136 PLOGI completes to NPort x%x " + "with no ndlp. Data: x%x x%x x%x\n", + did, ulp_status, ulp_word4, iotag); + goto out_freeiocb; + } + + /* Since ndlp can be freed in the disc state machine, note if this node + * is being used during discovery. + */ + spin_lock_irq(&ndlp->lock); + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + + /* PLOGI completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0102 PLOGI completes to NPort x%06x " + "Data: x%x x%x x%x x%x x%x\n", + ndlp->nlp_DID, ndlp->nlp_fc4_type, + ulp_status, ulp_word4, + disc, vport->num_disc_nodes); + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(vport)) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + goto out; + } + + if (ulp_status) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + if (disc) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + } + goto out; + } + /* PLOGI failed Don't print the vport to vport rjts */ + if (ulp_status != IOSTAT_LS_RJT || + (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) && + ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) || + (phba)->pport->cfg_log_verbose & LOG_ELS) + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2753 PLOGI failure DID:%06X " + "Status:x%x/x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4); + + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if (!lpfc_error_lost_link(ulp_status, ulp_word4)) + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_PLOGI); + + /* If a PLOGI collision occurred, the node needs to continue + * with the reglogin process. + */ + spin_lock_irq(&ndlp->lock); + if ((ndlp->nlp_flag & (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI)) && + ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) { + spin_unlock_irq(&ndlp->lock); + goto out; + } + + /* No PLOGI collision and the node is not registered with the + * scsi or nvme transport. It is no longer an active node. Just + * start the device remove process. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) + release_node = true; + } + spin_unlock_irq(&ndlp->lock); + + if (release_node) + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_DEVICE_RM); + } else { + /* Good status, call state machine */ + prsp = list_entry(cmdiocb->cmd_dmabuf->list.next, + struct lpfc_dmabuf, list); + ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp); + + sp = (struct serv_parm *)((u8 *)prsp->virt + + sizeof(u32)); + + ndlp->vmid_support = 0; + if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) || + (phba->cfg_vmid_priority_tagging && + sp->cmn.priority_tagging)) { + lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS, + "4018 app_hdr_support %d tagging %d DID x%x\n", + sp->cmn.app_hdr_support, + sp->cmn.priority_tagging, + ndlp->nlp_DID); + /* if the dest port supports VMID, mark it in ndlp */ + ndlp->vmid_support = 1; + } + + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_PLOGI); + } + + if (disc && vport->num_disc_nodes) { + /* Check to see if there are more PLOGIs to be sent */ + lpfc_more_plogi(vport); + + if (vport->num_disc_nodes == 0) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NDISC_ACTIVE; + spin_unlock_irq(shost->host_lock); + + lpfc_can_disctmo(vport); + lpfc_end_rscn(vport); + } + } + +out: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, + "PLOGI Cmpl PUT: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + +out_freeiocb: + /* Release the reference on the original I/O request. */ + free_ndlp = cmdiocb->ndlp; + + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(free_ndlp); + return; +} + +/** + * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport + * @vport: pointer to a host virtual N_Port data structure. + * @did: destination port identifier. + * @retry: number of retries to the command IOCB. + * + * This routine issues a Port Login (PLOGI) command to a remote N_Port + * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port, + * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list. + * This routine constructs the proper fields of the PLOGI IOCB and invokes + * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command. + * + * Note that the ndlp reference count will be incremented by 1 for holding + * the ndlp and the reference to ndlp will be stored into the ndlp field + * of the IOCB for the completion callback function to the PLOGI ELS command. + * + * Return code + * 0 - Successfully issued a plogi for @vport + * 1 - failed to issue a plogi for @vport + **/ +int +lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + struct serv_parm *sp; + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int ret; + + ndlp = lpfc_findnode_did(vport, did); + if (!ndlp) + return 1; + + /* Defer the processing of the issue PLOGI until after the + * outstanding UNREG_RPI mbox command completes, unless we + * are going offline. This logic does not apply for Fabric DIDs + */ + if ((ndlp->nlp_flag & NLP_UNREG_INP) && + ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) && + !(vport->fc_flag & FC_OFFLINE_MODE)) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "4110 Issue PLOGI x%x deferred " + "on NPort x%x rpi x%x Data: x%px\n", + ndlp->nlp_defer_did, ndlp->nlp_DID, + ndlp->nlp_rpi, ndlp); + + /* We can only defer 1st PLOGI */ + if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING) + ndlp->nlp_defer_did = did; + return 0; + } + + cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, + ELS_CMD_PLOGI); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + /* For PLOGI request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI; + pcmd += sizeof(uint32_t); + memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm)); + sp = (struct serv_parm *) pcmd; + + /* + * If we are a N-port connected to a Fabric, fix-up paramm's so logins + * to device on remote loops work. + */ + if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP)) + sp->cmn.altBbCredit = 1; + + if (sp->cmn.fcphLow < FC_PH_4_3) + sp->cmn.fcphLow = FC_PH_4_3; + + if (sp->cmn.fcphHigh < FC_PH3) + sp->cmn.fcphHigh = FC_PH3; + + sp->cmn.valid_vendor_ver_level = 0; + memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); + sp->cmn.bbRcvSizeMsb &= 0xF; + + /* Check if the destination port supports VMID */ + ndlp->vmid_support = 0; + if (vport->vmid_priority_tagging) + sp->cmn.priority_tagging = 1; + else if (phba->cfg_vmid_app_header && + bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags)) + sp->cmn.app_hdr_support = 1; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue PLOGI: did:x%x", + did, 0, 0); + + /* If our firmware supports this feature, convey that + * information to the target using the vendor specific field. + */ + if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { + sp->cmn.valid_vendor_ver_level = 1; + sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); + sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP); + } + + phba->fc_stat.elsXmitPLOGI++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue PLOGI: did:x%x refcnt %d", + did, kref_read(&ndlp->kref), 0); + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (ret) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_cmpl_els_prli - Completion callback function for prli + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function for a Process Login + * (PRLI) ELS command. The PRLI response IOCB status is checked for error + * status. If there is error status reported, PRLI retry shall be attempted + * by invoking the lpfc_els_retry() routine. Otherwise, the state + * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this + * ndlp to mark the PRLI completion. + **/ +static void +lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct lpfc_nodelist *ndlp; + char *mode; + u32 loglevel; + u32 ulp_status; + u32 ulp_word4; + bool release_node = false; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->rsp_iocb = rspiocb; + + ndlp = cmdiocb->ndlp; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_PRLI_SND; + + /* Driver supports multiple FC4 types. Counters matter. */ + vport->fc_prli_sent--; + ndlp->fc4_prli_sent--; + spin_unlock_irq(&ndlp->lock); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "PRLI cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, + ndlp->nlp_DID); + + /* PRLI completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0103 PRLI completes to NPort x%06x " + "Data: x%x x%x x%x x%x\n", + ndlp->nlp_DID, ulp_status, ulp_word4, + vport->num_disc_nodes, ndlp->fc4_prli_sent); + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(vport)) + goto out; + + if (ulp_status) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + goto out; + } + + /* If we don't send GFT_ID to Fabric, a PRLI error + * could be expected. + */ + if ((vport->fc_flag & FC_FABRIC) || + (vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)) { + mode = KERN_ERR; + loglevel = LOG_TRACE_EVENT; + } else { + mode = KERN_INFO; + loglevel = LOG_ELS; + } + + /* PRLI failed */ + lpfc_printf_vlog(vport, mode, loglevel, + "2754 PRLI failure DID:%06X Status:x%x/x%x, " + "data: x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4, ndlp->fc4_prli_sent); + + /* Do not call DSM for lpfc_els_abort'ed ELS cmds */ + if (!lpfc_error_lost_link(ulp_status, ulp_word4)) + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_PRLI); + + /* + * For P2P topology, retain the node so that PLOGI can be + * attempted on it again. + */ + if (vport->fc_flag & FC_PT2PT) + goto out; + + /* As long as this node is not registered with the SCSI + * or NVMe transport and no other PRLIs are outstanding, + * it is no longer an active node. Otherwise devloss + * handles the final cleanup. + */ + spin_lock_irq(&ndlp->lock); + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) && + !ndlp->fc4_prli_sent) { + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) + release_node = true; + } + spin_unlock_irq(&ndlp->lock); + + if (release_node) + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_DEVICE_RM); + } else { + /* Good status, call state machine. However, if another + * PRLI is outstanding, don't call the state machine + * because final disposition to Mapped or Unmapped is + * completed there. + */ + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_PRLI); + } + +out: + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + return; +} + +/** + * lpfc_issue_els_prli - Issue a prli iocb command for a vport + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @retry: number of retries to the command IOCB. + * + * This routine issues a Process Login (PRLI) ELS command for the + * @vport. The PRLI service parameters are set up in the payload of the + * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine + * is put to the IOCB completion callback func field before invoking the + * routine lpfc_sli_issue_iocb() to send out PRLI command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the PRLI ELS command. + * + * Return code + * 0 - successfully issued prli iocb command for @vport + * 1 - failed to issue prli iocb command for @vport + **/ +int +lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint8_t retry) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + PRLI *npr; + struct lpfc_nvme_prli *npr_nvme; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + u32 local_nlp_type, elscmd; + + /* + * If we are in RSCN mode, the FC4 types supported from a + * previous GFT_ID command may not be accurate. So, if we + * are a NVME Initiator, always look for the possibility of + * the remote NPort beng a NVME Target. + */ + if (phba->sli_rev == LPFC_SLI_REV4 && + vport->fc_flag & FC_RSCN_MODE && + vport->nvmei_support) + ndlp->nlp_fc4_type |= NLP_FC4_NVME; + local_nlp_type = ndlp->nlp_fc4_type; + + /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp + * fields here before any of them can complete. + */ + ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); + ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR); + ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; + ndlp->nlp_flag &= ~(NLP_FIRSTBURST | NLP_NPR_2B_DISC); + ndlp->nvme_fb_size = 0; + + send_next_prli: + if (local_nlp_type & NLP_FC4_FCP) { + /* Payload is 4 + 16 = 20 x14 bytes. */ + cmdsize = (sizeof(uint32_t) + sizeof(PRLI)); + elscmd = ELS_CMD_PRLI; + } else if (local_nlp_type & NLP_FC4_NVME) { + /* Payload is 4 + 20 = 24 x18 bytes. */ + cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli)); + elscmd = ELS_CMD_NVMEPRLI; + } else { + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "3083 Unknown FC_TYPE x%x ndlp x%06x\n", + ndlp->nlp_fc4_type, ndlp->nlp_DID); + return 1; + } + + /* SLI3 ports don't support NVME. If this rport is a strict NVME + * FC4 type, implicitly LOGO. + */ + if (phba->sli_rev == LPFC_SLI_REV3 && + ndlp->nlp_fc4_type == NLP_FC4_NVME) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n", + ndlp->nlp_type); + lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); + return 1; + } + + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, elscmd); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + /* For PRLI request, remainder of payload is service parameters */ + memset(pcmd, 0, cmdsize); + + if (local_nlp_type & NLP_FC4_FCP) { + /* Remainder of payload is FCP PRLI parameter page. + * Note: this data structure is defined as + * BE/LE in the structure definition so no + * byte swap call is made. + */ + *((uint32_t *)(pcmd)) = ELS_CMD_PRLI; + pcmd += sizeof(uint32_t); + npr = (PRLI *)pcmd; + + /* + * If our firmware version is 3.20 or later, + * set the following bits for FC-TAPE support. + */ + if (phba->vpd.rev.feaLevelHigh >= 0x02) { + npr->ConfmComplAllowed = 1; + npr->Retry = 1; + npr->TaskRetryIdReq = 1; + } + npr->estabImagePair = 1; + npr->readXferRdyDis = 1; + if (vport->cfg_first_burst_size) + npr->writeXferRdyDis = 1; + + /* For FCP support */ + npr->prliType = PRLI_FCP_TYPE; + npr->initiatorFunc = 1; + elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ; + + /* Remove FCP type - processed. */ + local_nlp_type &= ~NLP_FC4_FCP; + } else if (local_nlp_type & NLP_FC4_NVME) { + /* Remainder of payload is NVME PRLI parameter page. + * This data structure is the newer definition that + * uses bf macros so a byte swap is required. + */ + *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI; + pcmd += sizeof(uint32_t); + npr_nvme = (struct lpfc_nvme_prli *)pcmd; + bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); + bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ + if (phba->nsler) { + bf_set(prli_nsler, npr_nvme, 1); + bf_set(prli_conf, npr_nvme, 1); + } + + /* Only initiators request first burst. */ + if ((phba->cfg_nvme_enable_fb) && + !phba->nvmet_support) + bf_set(prli_fba, npr_nvme, 1); + + if (phba->nvmet_support) { + bf_set(prli_tgt, npr_nvme, 1); + bf_set(prli_disc, npr_nvme, 1); + } else { + bf_set(prli_init, npr_nvme, 1); + bf_set(prli_conf, npr_nvme, 1); + } + + npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); + npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); + elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ; + + /* Remove NVME type - processed. */ + local_nlp_type &= ~NLP_FC4_NVME; + } + + phba->fc_stat.elsXmitPRLI++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_prli; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue PRLI: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + /* The vport counters are used for lpfc_scan_finished, but + * the ndlp is used to track outstanding PRLIs for different + * FC4 types. + */ + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_PRLI_SND; + vport->fc_prli_sent++; + ndlp->fc4_prli_sent++; + spin_unlock_irq(&ndlp->lock); + + /* The driver supports 2 FC4 types. Make sure + * a PRLI is issued for all types before exiting. + */ + if (phba->sli_rev == LPFC_SLI_REV4 && + local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) + goto send_next_prli; + else + return 0; +} + +/** + * lpfc_rscn_disc - Perform rscn discovery for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine performs Registration State Change Notification (RSCN) + * discovery for a @vport. If the @vport's node port recovery count is not + * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all + * the nodes that need recovery. If none of the PLOGI were needed through + * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be + * invoked to check and handle possible more RSCN came in during the period + * of processing the current ones. + **/ +static void +lpfc_rscn_disc(struct lpfc_vport *vport) +{ + lpfc_can_disctmo(vport); + + /* RSCN discovery */ + /* go thru NPR nodes and issue ELS PLOGIs */ + if (vport->fc_npr_cnt) + if (lpfc_els_disc_plogi(vport)) + return; + + lpfc_end_rscn(vport); +} + +/** + * lpfc_adisc_done - Complete the adisc phase of discovery + * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs. + * + * This function is called when the final ADISC is completed during discovery. + * This function handles clearing link attention or issuing reg_vpi depending + * on whether npiv is enabled. This function also kicks off the PLOGI phase of + * discovery. + * This function is called with no locks held. + **/ +static void +lpfc_adisc_done(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + + /* + * For NPIV, cmpl_reg_vpi will set port_state to READY, + * and continue discovery. + */ + if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && + !(vport->fc_flag & FC_RSCN_MODE) && + (phba->sli_rev < LPFC_SLI_REV4)) { + + /* + * If link is down, clear_la and reg_vpi will be done after + * flogi following a link up event + */ + if (!lpfc_is_link_up(phba)) + return; + + /* The ADISCs are complete. Doesn't matter if they + * succeeded or failed because the ADISC completion + * routine guarantees to call the state machine and + * the RPI is either unregistered (failed ADISC response) + * or the RPI is still valid and the node is marked + * mapped for a target. The exchanges should be in the + * correct state. This code is specific to SLI3. + */ + lpfc_issue_clear_la(phba, vport); + lpfc_issue_reg_vpi(phba, vport); + return; + } + /* + * For SLI2, we need to set port_state to READY + * and continue discovery. + */ + if (vport->port_state < LPFC_VPORT_READY) { + /* If we get here, there is nothing to ADISC */ + lpfc_issue_clear_la(phba, vport); + if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { + vport->num_disc_nodes = 0; + /* go thru NPR list, issue ELS PLOGIs */ + if (vport->fc_npr_cnt) + lpfc_els_disc_plogi(vport); + if (!vport->num_disc_nodes) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NDISC_ACTIVE; + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + lpfc_end_rscn(vport); + } + } + vport->port_state = LPFC_VPORT_READY; + } else + lpfc_rscn_disc(vport); +} + +/** + * lpfc_more_adisc - Issue more adisc as needed + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine determines whether there are more ndlps on a @vport + * node list need to have Address Discover (ADISC) issued. If so, it will + * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's + * remaining nodes which need to have ADISC sent. + **/ +void +lpfc_more_adisc(struct lpfc_vport *vport) +{ + if (vport->num_disc_nodes) + vport->num_disc_nodes--; + /* Continue discovery with <num_disc_nodes> ADISCs to go */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0210 Continue discovery with %d ADISCs to go " + "Data: x%x x%x x%x\n", + vport->num_disc_nodes, vport->fc_adisc_cnt, + vport->fc_flag, vport->port_state); + /* Check to see if there are more ADISCs to be sent */ + if (vport->fc_flag & FC_NLP_MORE) { + lpfc_set_disctmo(vport); + /* go thru NPR nodes and issue any remaining ELS ADISCs */ + lpfc_els_disc_adisc(vport); + } + if (!vport->num_disc_nodes) + lpfc_adisc_done(vport); + return; +} + +/** + * lpfc_cmpl_els_adisc - Completion callback function for adisc + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion function for issuing the Address Discover + * (ADISC) command. It first checks to see whether link went down during + * the discovery process. If so, the node will be marked as node port + * recovery for issuing discover IOCB by the link attention handler and + * exit. Otherwise, the response status is checked. If error was reported + * in the response status, the ADISC command shall be retried by invoking + * the lpfc_els_retry() routine. Otherwise, if no error was reported in + * the response status, the state machine is invoked to set transition + * with respect to NLP_EVT_CMPL_ADISC event. + **/ +static void +lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + IOCB_t *irsp; + struct lpfc_nodelist *ndlp; + int disc; + u32 ulp_status, ulp_word4, tmo; + bool release_node = false; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->rsp_iocb = rspiocb; + + ndlp = cmdiocb->ndlp; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "ADISC cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, + ndlp->nlp_DID); + + /* Since ndlp can be freed in the disc state machine, note if this node + * is being used during discovery. + */ + spin_lock_irq(&ndlp->lock); + disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC); + ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC); + spin_unlock_irq(&ndlp->lock); + /* ADISC completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0104 ADISC completes to NPort x%x " + "Data: x%x x%x x%x x%x x%x\n", + ndlp->nlp_DID, ulp_status, ulp_word4, + tmo, disc, vport->num_disc_nodes); + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(vport)) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + goto out; + } + + if (ulp_status) { + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) { + /* ELS command is being retried */ + if (disc) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + lpfc_set_disctmo(vport); + } + goto out; + } + /* ADISC failed */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2755 ADISC failure DID:%06X Status:x%x/x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4); + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_ADISC); + + /* As long as this node is not registered with the SCSI or NVMe + * transport, it is no longer an active node. Otherwise + * devloss handles the final cleanup. + */ + spin_lock_irq(&ndlp->lock); + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + if (!(ndlp->nlp_flag & NLP_IN_DEV_LOSS)) + release_node = true; + } + spin_unlock_irq(&ndlp->lock); + + if (release_node) + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_DEVICE_RM); + } else + /* Good status, call state machine */ + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_CMPL_ADISC); + + /* Check to see if there are more ADISCs to be sent */ + if (disc && vport->num_disc_nodes) + lpfc_more_adisc(vport); +out: + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + return; +} + +/** + * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport + * @vport: pointer to a virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @retry: number of retries to the command IOCB. + * + * This routine issues an Address Discover (ADISC) for an @ndlp on a + * @vport. It prepares the payload of the ADISC ELS command, updates the + * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine + * to issue the ADISC ELS command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the ADISC ELS command. + * + * Return code + * 0 - successfully issued adisc + * 1 - failed to issue adisc + **/ +int +lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint8_t retry) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + ADISC *ap; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + + cmdsize = (sizeof(uint32_t) + sizeof(ADISC)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_ADISC); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + /* For ADISC request, remainder of payload is service parameters */ + *((uint32_t *) (pcmd)) = ELS_CMD_ADISC; + pcmd += sizeof(uint32_t); + + /* Fill in ADISC payload */ + ap = (ADISC *) pcmd; + ap->hardAL_PA = phba->fc_pref_ALPA; + memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); + memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); + ap->DID = be32_to_cpu(vport->fc_myDID); + + phba->fc_stat.elsXmitADISC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc; + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_ADISC_SND; + spin_unlock_irq(&ndlp->lock); + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto err; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue ADISC: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + goto err; + } + + return 0; + +err: + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_ADISC_SND; + spin_unlock_irq(&ndlp->lock); + return 1; +} + +/** + * lpfc_cmpl_els_logo - Completion callback function for logo + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion function for issuing the ELS Logout (LOGO) + * command. If no error status was reported from the LOGO response, the + * state machine of the associated ndlp shall be invoked for transition with + * respect to NLP_EVT_CMPL_LOGO event. + **/ +static void +lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_vport *vport = ndlp->vport; + IOCB_t *irsp; + unsigned long flags; + uint32_t skip_recovery = 0; + int wake_up_waiter = 0; + u32 ulp_status; + u32 ulp_word4; + u32 tmo; + + /* we pass cmdiocb to state machine which needs rspiocb as well */ + cmdiocb->rsp_iocb = rspiocb; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + } + + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_LOGO_SND; + if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) { + wake_up_waiter = 1; + ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO; + } + spin_unlock_irq(&ndlp->lock); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "LOGO cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, + ndlp->nlp_DID); + + /* LOGO completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0105 LOGO completes to NPort x%x " + "refcnt %d nflags x%x Data: x%x x%x x%x x%x\n", + ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, + ulp_status, ulp_word4, + tmo, vport->num_disc_nodes); + + if (lpfc_els_chk_latt(vport)) { + skip_recovery = 1; + goto out; + } + + /* The LOGO will not be retried on failure. A LOGO was + * issued to the remote rport and a ACC or RJT or no Answer are + * all acceptable. Note the failure and move forward with + * discovery. The PLOGI will retry. + */ + if (ulp_status) { + /* LOGO failed */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "2756 LOGO failure, No Retry DID:%06X " + "Status:x%x/x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4); + + if (lpfc_error_lost_link(ulp_status, ulp_word4)) { + skip_recovery = 1; + goto out; + } + } + + /* Call state machine. This will unregister the rpi if needed. */ + lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO); + + /* The driver sets this flag for an NPIV instance that doesn't want to + * log into the remote port. + */ + if (ndlp->nlp_flag & NLP_TARGET_REMOVE) { + spin_lock_irq(&ndlp->lock); + if (phba->sli_rev == LPFC_SLI_REV4) + ndlp->nlp_flag |= NLP_RELEASE_RPI; + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_DEVICE_RM); + goto out_rsrc_free; + } + +out: + /* At this point, the LOGO processing is complete. NOTE: For a + * pt2pt topology, we are assuming the NPortID will only change + * on link up processing. For a LOGO / PLOGI initiated by the + * Initiator, we are assuming the NPortID is not going to change. + */ + + if (wake_up_waiter && ndlp->logo_waitq) + wake_up(ndlp->logo_waitq); + /* + * If the node is a target, the handling attempts to recover the port. + * For any other port type, the rpi is unregistered as an implicit + * LOGO. + */ + if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) && + skip_recovery == 0) { + lpfc_cancel_retry_delay_tmo(vport, ndlp); + spin_lock_irqsave(&ndlp->lock, flags); + ndlp->nlp_flag |= NLP_NPR_2B_DISC; + spin_unlock_irqrestore(&ndlp->lock, flags); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3187 LOGO completes to NPort x%x: Start " + "Recovery Data: x%x x%x x%x x%x\n", + ndlp->nlp_DID, ulp_status, + ulp_word4, tmo, + vport->num_disc_nodes); + + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + + lpfc_disc_start(vport); + return; + } + + /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the + * driver sends a LOGO to the rport to cleanup. For fabric and + * initiator ports cleanup the node as long as it the node is not + * register with the transport. + */ + if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(&ndlp->lock); + lpfc_disc_state_machine(vport, ndlp, cmdiocb, + NLP_EVT_DEVICE_RM); + } +out_rsrc_free: + /* Driver is done with the I/O. */ + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +/** + * lpfc_issue_els_logo - Issue a logo to an node on a vport + * @vport: pointer to a virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @retry: number of retries to the command IOCB. + * + * This routine constructs and issues an ELS Logout (LOGO) iocb command + * to a remote node, referred by an @ndlp on a @vport. It constructs the + * payload of the IOCB, properly sets up the @ndlp state, and invokes the + * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the LOGO ELS command. + * + * Callers of this routine are expected to unregister the RPI first + * + * Return code + * 0 - successfully issued logo + * 1 - failed to issue logo + **/ +int +lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + + spin_lock_irq(&ndlp->lock); + if (ndlp->nlp_flag & NLP_LOGO_SND) { + spin_unlock_irq(&ndlp->lock); + return 0; + } + spin_unlock_irq(&ndlp->lock); + + cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_LOGO); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; + pcmd += sizeof(uint32_t); + + /* Fill in LOGO payload */ + *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); + pcmd += sizeof(uint32_t); + memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); + + phba->fc_stat.elsXmitLOGO++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_logo; + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_LOGO_SND; + ndlp->nlp_flag &= ~NLP_ISSUE_LOGO; + spin_unlock_irq(&ndlp->lock); + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto err; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue LOGO: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + goto err; + } + + spin_lock_irq(&ndlp->lock); + ndlp->nlp_prev_state = ndlp->nlp_state; + spin_unlock_irq(&ndlp->lock); + lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); + return 0; + +err: + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_LOGO_SND; + spin_unlock_irq(&ndlp->lock); + return 1; +} + +/** + * lpfc_cmpl_els_cmd - Completion callback function for generic els command + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is a generic completion callback function for ELS commands. + * Specifically, it is the callback function which does not need to perform + * any command specific operations. It is currently used by the ELS command + * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel + * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). + * Other than certain debug loggings, this callback function simply invokes the + * lpfc_els_chk_latt() routine to check whether link went down during the + * discovery process. + **/ +static void +lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct lpfc_nodelist *free_ndlp; + IOCB_t *irsp; + u32 ulp_status, ulp_word4, tmo, did, iotag; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + did = get_job_els_rsp64_did(phba, cmdiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + iotag = get_wqe_reqtag(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + iotag = irsp->ulpIoTag; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "ELS cmd cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n", + iotag, ulp_status, ulp_word4, tmo); + + /* Check to see if link went down during discovery */ + lpfc_els_chk_latt(vport); + + free_ndlp = cmdiocb->ndlp; + + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(free_ndlp); +} + +/** + * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node. + * @vport: pointer to lpfc_vport data structure. + * @fc_ndlp: pointer to the fabric controller (0xfffffd) node. + * + * This routine registers the rpi assigned to the fabric controller + * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED + * state triggering a registration with the SCSI transport. + * + * This routine is single out because the fabric controller node + * does not receive a PLOGI. This routine is consumed by the + * SCR and RDF ELS commands. Callers are expected to qualify + * with SLI4 first. + **/ +static int +lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + struct lpfc_nodelist *ns_ndlp; + LPFC_MBOXQ_t *mbox; + + if (fc_ndlp->nlp_flag & NLP_RPI_REGISTERED) + return rc; + + ns_ndlp = lpfc_findnode_did(vport, NameServer_DID); + if (!ns_ndlp) + return -ENODEV; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, + "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n", + __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID, + ns_ndlp->nlp_state); + if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + return -ENODEV; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, + "0936 %s: no memory for reg_login " + "Data: x%x x%x x%x x%x\n", __func__, + fc_ndlp->nlp_DID, fc_ndlp->nlp_state, + fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); + return -ENOMEM; + } + rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID, + (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi); + if (rc) { + rc = -EACCES; + goto out; + } + + fc_ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; + mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login; + mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp); + if (!mbox->ctx_ndlp) { + rc = -ENOMEM; + goto out; + } + + mbox->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + rc = -ENODEV; + lpfc_nlp_put(fc_ndlp); + goto out; + } + /* Success path. Exit. */ + lpfc_nlp_set_state(vport, fc_ndlp, + NLP_STE_REG_LOGIN_ISSUE); + return 0; + + out: + lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, + "0938 %s: failed to format reg_login " + "Data: x%x x%x x%x x%x\n", __func__, + fc_ndlp->nlp_DID, fc_ndlp->nlp_state, + fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi); + return rc; +} + +/** + * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is a generic completion callback function for Discovery ELS cmd. + * Currently used by the ELS command issuing routines for the ELS State Change + * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf(). + * These commands will be retried once only for ELS timeout errors. + **/ +static void +lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + IOCB_t *irsp; + struct lpfc_els_rdf_rsp *prdf; + struct lpfc_dmabuf *pcmd, *prsp; + u32 *pdata; + u32 cmd; + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + u32 ulp_status, ulp_word4, tmo, did, iotag; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + did = get_job_els_rsp64_did(phba, cmdiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + iotag = get_wqe_reqtag(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + iotag = irsp->ulpIoTag; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "ELS cmd cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n", + iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry); + + pcmd = cmdiocb->cmd_dmabuf; + if (!pcmd) + goto out; + + pdata = (u32 *)pcmd->virt; + if (!pdata) + goto out; + cmd = *pdata; + + /* Only 1 retry for ELS Timeout only */ + if (ulp_status == IOSTAT_LOCAL_REJECT && + ((ulp_word4 & IOERR_PARAM_MASK) == + IOERR_SEQUENCE_TIMEOUT)) { + cmdiocb->retry++; + if (cmdiocb->retry <= 1) { + switch (cmd) { + case ELS_CMD_SCR: + lpfc_issue_els_scr(vport, cmdiocb->retry); + break; + case ELS_CMD_EDC: + lpfc_issue_els_edc(vport, cmdiocb->retry); + break; + case ELS_CMD_RDF: + lpfc_issue_els_rdf(vport, cmdiocb->retry); + break; + } + goto out; + } + phba->fc_stat.elsRetryExceeded++; + } + if (cmd == ELS_CMD_EDC) { + /* must be called before checking uplStatus and returning */ + lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb); + return; + } + if (ulp_status) { + /* ELS discovery cmd completes with error */ + lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, + "4203 ELS cmd x%x error: x%x x%X\n", cmd, + ulp_status, ulp_word4); + goto out; + } + + /* The RDF response doesn't have any impact on the running driver + * but the notification descriptors are dumped here for support. + */ + if (cmd == ELS_CMD_RDF) { + int i; + + prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + + prdf = (struct lpfc_els_rdf_rsp *)prsp->virt; + if (!prdf) + goto out; + + for (i = 0; i < ELS_RDF_REG_TAG_CNT && + i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++) + lpfc_printf_vlog(vport, KERN_INFO, + LOG_ELS | LOG_CGN_MGMT, + "4677 Fabric RDF Notification Grant " + "Data: 0x%08x Reg: %x %x\n", + be32_to_cpu( + prdf->reg_d1.desc_tags[i]), + phba->cgn_reg_signal, + phba->cgn_reg_fpin); + } + +out: + /* Check to see if link went down during discovery */ + lpfc_els_chk_latt(vport); + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + return; +} + +/** + * lpfc_issue_els_scr - Issue a scr to an node on a vport + * @vport: pointer to a host virtual N_Port data structure. + * @retry: retry counter for the command IOCB. + * + * This routine issues a State Change Request (SCR) to a fabric node + * on a @vport. The remote node is Fabric Controller (0xfffffd). It + * first search the @vport node list to find the matching ndlp. If no such + * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An + * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb() + * routine is invoked to send the SCR IOCB. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the SCR ELS command. + * + * Return code + * 0 - Successfully issued scr command + * 1 - Failed to issue scr command + **/ +int +lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + struct lpfc_nodelist *ndlp; + + cmdsize = (sizeof(uint32_t) + sizeof(SCR)); + + ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); + if (!ndlp) { + ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); + if (!ndlp) + return 1; + lpfc_enqueue_node(vport, ndlp); + } + + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_SCR); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + rc = lpfc_reg_fab_ctrl_node(vport, ndlp); + if (rc) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, + "0937 %s: Failed to reg fc node, rc %d\n", + __func__, rc); + return 1; + } + } + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *) (pcmd)) = ELS_CMD_SCR; + pcmd += sizeof(uint32_t); + + /* For SCR, remainder of payload is SCR parameter page */ + memset(pcmd, 0, sizeof(SCR)); + ((SCR *) pcmd)->Function = SCR_FUNC_FULL; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue SCR: did:x%x", + ndlp->nlp_DID, 0, 0); + + phba->fc_stat.elsXmitSCR++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue SCR: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric) + * or the other nport (pt2pt). + * @vport: pointer to a host virtual N_Port data structure. + * @retry: number of retries to the command IOCB. + * + * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD) + * when connected to a fabric, or to the remote port when connected + * in point-to-point mode. When sent to the Fabric Controller, it will + * replay the RSCN to registered recipients. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the RSCN ELS command. + * + * Return code + * 0 - Successfully issued RSCN command + * 1 - Failed to issue RSCN command + **/ +int +lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + struct lpfc_nodelist *ndlp; + struct { + struct fc_els_rscn rscn; + struct fc_els_rscn_page portid; + } *event; + uint32_t nportid; + uint16_t cmdsize = sizeof(*event); + + /* Not supported for private loop */ + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP && + !(vport->fc_flag & FC_PUBLIC_LOOP)) + return 1; + + if (vport->fc_flag & FC_PT2PT) { + /* find any mapped nport - that would be the other nport */ + ndlp = lpfc_findnode_mapped(vport); + if (!ndlp) + return 1; + } else { + nportid = FC_FID_FCTRL; + /* find the fabric controller node */ + ndlp = lpfc_findnode_did(vport, nportid); + if (!ndlp) { + /* if one didn't exist, make one */ + ndlp = lpfc_nlp_init(vport, nportid); + if (!ndlp) + return 1; + lpfc_enqueue_node(vport, ndlp); + } + } + + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_RSCN_XMT); + + if (!elsiocb) + return 1; + + event = elsiocb->cmd_dmabuf->virt; + + event->rscn.rscn_cmd = ELS_RSCN; + event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page); + event->rscn.rscn_plen = cpu_to_be16(cmdsize); + + nportid = vport->fc_myDID; + /* appears that page flags must be 0 for fabric to broadcast RSCN */ + event->portid.rscn_page_flags = 0; + event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16; + event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8; + event->portid.rscn_fid[2] = nportid & 0x000000FF; + + phba->fc_stat.elsXmitRSCN++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue RSCN: did:x%x", + ndlp->nlp_DID, 0, 0); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_issue_els_farpr - Issue a farp to an node on a vport + * @vport: pointer to a host virtual N_Port data structure. + * @nportid: N_Port identifier to the remote node. + * @retry: number of retries to the command IOCB. + * + * This routine issues a Fibre Channel Address Resolution Response + * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid) + * is passed into the function. It first search the @vport node list to find + * the matching ndlp. If no such ndlp is found, a new ndlp shall be created + * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the + * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the FARPR ELS command. + * + * Return code + * 0 - Successfully issued farpr command + * 1 - Failed to issue farpr command + **/ +static int +lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + FARP *fp; + uint8_t *pcmd; + uint32_t *lp; + uint16_t cmdsize; + struct lpfc_nodelist *ondlp; + struct lpfc_nodelist *ndlp; + + cmdsize = (sizeof(uint32_t) + sizeof(FARP)); + + ndlp = lpfc_findnode_did(vport, nportid); + if (!ndlp) { + ndlp = lpfc_nlp_init(vport, nportid); + if (!ndlp) + return 1; + lpfc_enqueue_node(vport, ndlp); + } + + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_FARPR); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *) (pcmd)) = ELS_CMD_FARPR; + pcmd += sizeof(uint32_t); + + /* Fill in FARPR payload */ + fp = (FARP *) (pcmd); + memset(fp, 0, sizeof(FARP)); + lp = (uint32_t *) pcmd; + *lp++ = be32_to_cpu(nportid); + *lp++ = be32_to_cpu(vport->fc_myDID); + fp->Rflags = 0; + fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE); + + memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name)); + memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); + ondlp = lpfc_findnode_did(vport, nportid); + if (ondlp) { + memcpy(&fp->OportName, &ondlp->nlp_portname, + sizeof(struct lpfc_name)); + memcpy(&fp->OnodeName, &ondlp->nlp_nodename, + sizeof(struct lpfc_name)); + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue FARPR: did:x%x", + ndlp->nlp_DID, 0, 0); + + phba->fc_stat.elsXmitFARPR++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + /* The additional lpfc_nlp_put will cause the following + * lpfc_els_free_iocb routine to trigger the release of + * the node. + */ + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + /* This will cause the callback-function lpfc_cmpl_els_cmd to + * trigger the release of the node. + */ + /* Don't release reference count as RDF is likely outstanding */ + return 0; +} + +/** + * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric. + * @vport: pointer to a host virtual N_Port data structure. + * @retry: retry counter for the command IOCB. + * + * This routine issues an ELS RDF to the Fabric Controller to register + * for diagnostic functions. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the RDF ELS command. + * + * Return code + * 0 - Successfully issued rdf command + * 1 - Failed to issue rdf command + **/ +int +lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + struct lpfc_els_rdf_req *prdf; + struct lpfc_nodelist *ndlp; + uint16_t cmdsize; + int rc; + + cmdsize = sizeof(*prdf); + + ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID); + if (!ndlp) { + ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID); + if (!ndlp) + return -ENODEV; + lpfc_enqueue_node(vport, ndlp); + } + + /* RDF ELS is not required on an NPIV VN_Port. */ + if (vport->port_type == LPFC_NPIV_PORT) + return -EACCES; + + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_RDF); + if (!elsiocb) + return -ENOMEM; + + /* Configure the payload for the supported FPIN events. */ + prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt; + memset(prdf, 0, cmdsize); + prdf->rdf.fpin_cmd = ELS_RDF; + prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) - + sizeof(struct fc_els_rdf)); + prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER); + prdf->reg_d1.reg_desc.desc_len = cpu_to_be32( + FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1)); + prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT); + prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY); + prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY); + prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST); + prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n", + ndlp->nlp_DID, phba->cgn_reg_signal, + phba->cgn_reg_fpin); + + phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ; + elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return -EIO; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue RDF: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return -EIO; + } + return 0; +} + + /** + * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric. + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * A received RDF implies a possible change to fabric supported diagnostic + * functions. This routine sends LS_ACC and then has the Nx_Port issue a new + * RDF request to reregister for supported diagnostic functions. + * + * Return code + * 0 - Success + * -EIO - Failed to process received RDF + **/ +static int +lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + /* Send LS_ACC */ + if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "1623 Failed to RDF_ACC from x%x for x%x\n", + ndlp->nlp_DID, vport->fc_myDID); + return -EIO; + } + + /* Issue new RDF for reregistering */ + if (lpfc_issue_els_rdf(vport, 0)) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "2623 Failed to re register RDF for x%x\n", + vport->fc_myDID); + return -EIO; + } + + return 0; +} + +/** + * lpfc_least_capable_settings - helper function for EDC rsp processing + * @phba: pointer to lpfc hba data structure. + * @pcgd: pointer to congestion detection descriptor in EDC rsp. + * + * This helper routine determines the least capable setting for + * congestion signals, signal freq, including scale, from the + * congestion detection descriptor in the EDC rsp. The routine + * sets @phba values in preparation for a set_featues mailbox. + **/ +static void +lpfc_least_capable_settings(struct lpfc_hba *phba, + struct fc_diag_cg_sig_desc *pcgd) +{ + u32 rsp_sig_cap = 0, drv_sig_cap = 0; + u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0; + + /* Get rsp signal and frequency capabilities. */ + rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability); + rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count); + rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units); + + /* If the Fport does not support signals. Set FPIN only */ + if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED) + goto out_no_support; + + /* Apply the xmt scale to the xmt cycle to get the correct frequency. + * Adapter default is 100 millisSeconds. Convert all xmt cycle values + * to milliSeconds. + */ + switch (rsp_sig_freq_scale) { + case EDC_CG_SIGFREQ_SEC: + rsp_sig_freq_cyc *= MSEC_PER_SEC; + break; + case EDC_CG_SIGFREQ_MSEC: + rsp_sig_freq_cyc = 1; + break; + default: + goto out_no_support; + } + + /* Convenient shorthand. */ + drv_sig_cap = phba->cgn_reg_signal; + + /* Choose the least capable frequency. */ + if (rsp_sig_freq_cyc > phba->cgn_sig_freq) + phba->cgn_sig_freq = rsp_sig_freq_cyc; + + /* Should be some common signals support. Settle on least capable + * signal and adjust FPIN values. Initialize defaults to ease the + * decision. + */ + phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY && + (drv_sig_cap == EDC_CG_SIG_WARN_ONLY || + drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) { + phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; + phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; + } + if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) { + if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) { + phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM; + phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE; + } + if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) { + phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY; + phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN; + } + } + + /* We are NOT recording signal frequency in congestion info buffer */ + return; + +out_no_support: + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + phba->cgn_sig_freq = 0; + phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; +} + +DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag, + FC_LS_TLV_DTAG_INIT); + +/** + * lpfc_cmpl_els_edc - Completion callback function for EDC + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function for issuing the Exchange + * Diagnostic Capabilities (EDC) command. The driver issues an EDC to + * notify the FPort of its Congestion and Link Fault capabilities. This + * routine parses the FPort's response and decides on the least common + * values applicable to both FPort and NPort for Warnings and Alarms that + * are communicated via hardware signals. + **/ +static void +lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + IOCB_t *irsp_iocb; + struct fc_els_edc_resp *edc_rsp; + struct fc_tlv_desc *tlv; + struct fc_diag_cg_sig_desc *pcgd; + struct fc_diag_lnkflt_desc *plnkflt; + struct lpfc_dmabuf *pcmd, *prsp; + const char *dtag_nm; + u32 *pdata, dtag; + int desc_cnt = 0, bytes_remain; + bool rcv_cap_desc = false; + struct lpfc_nodelist *ndlp; + u32 ulp_status, ulp_word4, tmo, did, iotag; + + ndlp = cmdiocb->ndlp; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + did = get_job_els_rsp64_did(phba, rspiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(rspiocb); + iotag = get_wqe_reqtag(rspiocb); + } else { + irsp_iocb = &rspiocb->iocb; + tmo = irsp_iocb->ulpTimeout; + iotag = irsp_iocb->ulpIoTag; + } + + lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, + "EDC cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n", + iotag, ulp_status, ulp_word4, tmo); + + pcmd = cmdiocb->cmd_dmabuf; + if (!pcmd) + goto out; + + pdata = (u32 *)pcmd->virt; + if (!pdata) + goto out; + + /* Need to clear signal values, send features MB and RDF with FPIN. */ + if (ulp_status) + goto out; + + prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + + edc_rsp = prsp->virt; + if (!edc_rsp) + goto out; + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_log(phba, KERN_INFO, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "4676 Fabric EDC Rsp: " + "0x%02x, 0x%08x\n", + edc_rsp->acc_hdr.la_cmd, + be32_to_cpu(edc_rsp->desc_list_len)); + + /* + * Payload length in bytes is the response descriptor list + * length minus the 12 bytes of Link Service Request + * Information descriptor in the reply. + */ + bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) - + sizeof(struct fc_els_lsri_desc); + if (bytes_remain <= 0) + goto out; + + tlv = edc_rsp->desc; + + /* + * cycle through EDC diagnostic descriptors to find the + * congestion signaling capability descriptor + */ + while (bytes_remain) { + if (bytes_remain < FC_TLV_DESC_HDR_SZ) { + lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, + "6461 Truncated TLV hdr on " + "Diagnostic descriptor[%d]\n", + desc_cnt); + goto out; + } + + dtag = be32_to_cpu(tlv->desc_tag); + switch (dtag) { + case ELS_DTAG_LNK_FAULT_CAP: + if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || + FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != + sizeof(struct fc_diag_lnkflt_desc)) { + lpfc_printf_log(phba, KERN_WARNING, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "6462 Truncated Link Fault Diagnostic " + "descriptor[%d]: %d vs 0x%zx 0x%zx\n", + desc_cnt, bytes_remain, + FC_TLV_DESC_SZ_FROM_LENGTH(tlv), + sizeof(struct fc_diag_lnkflt_desc)); + goto out; + } + plnkflt = (struct fc_diag_lnkflt_desc *)tlv; + lpfc_printf_log(phba, KERN_INFO, + LOG_ELS | LOG_LDS_EVENT, + "4617 Link Fault Desc Data: 0x%08x 0x%08x " + "0x%08x 0x%08x 0x%08x\n", + be32_to_cpu(plnkflt->desc_tag), + be32_to_cpu(plnkflt->desc_len), + be32_to_cpu( + plnkflt->degrade_activate_threshold), + be32_to_cpu( + plnkflt->degrade_deactivate_threshold), + be32_to_cpu(plnkflt->fec_degrade_interval)); + break; + case ELS_DTAG_CG_SIGNAL_CAP: + if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || + FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != + sizeof(struct fc_diag_cg_sig_desc)) { + lpfc_printf_log( + phba, KERN_WARNING, LOG_CGN_MGMT, + "6463 Truncated Cgn Signal Diagnostic " + "descriptor[%d]: %d vs 0x%zx 0x%zx\n", + desc_cnt, bytes_remain, + FC_TLV_DESC_SZ_FROM_LENGTH(tlv), + sizeof(struct fc_diag_cg_sig_desc)); + goto out; + } + + pcgd = (struct fc_diag_cg_sig_desc *)tlv; + lpfc_printf_log( + phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "4616 CGN Desc Data: 0x%08x 0x%08x " + "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n", + be32_to_cpu(pcgd->desc_tag), + be32_to_cpu(pcgd->desc_len), + be32_to_cpu(pcgd->xmt_signal_capability), + be16_to_cpu(pcgd->xmt_signal_frequency.count), + be16_to_cpu(pcgd->xmt_signal_frequency.units), + be32_to_cpu(pcgd->rcv_signal_capability), + be16_to_cpu(pcgd->rcv_signal_frequency.count), + be16_to_cpu(pcgd->rcv_signal_frequency.units)); + + /* Compare driver and Fport capabilities and choose + * least common. + */ + lpfc_least_capable_settings(phba, pcgd); + rcv_cap_desc = true; + break; + default: + dtag_nm = lpfc_get_tlv_dtag_nm(dtag); + lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, + "4919 unknown Diagnostic " + "Descriptor[%d]: tag x%x (%s)\n", + desc_cnt, dtag, dtag_nm); + } + + bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); + tlv = fc_tlv_next_desc(tlv); + desc_cnt++; + } + +out: + if (!rcv_cap_desc) { + phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + phba->cgn_sig_freq = 0; + lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT, + "4202 EDC rsp error - sending RDF " + "for FPIN only.\n"); + } + + lpfc_config_cgn_signal(phba); + + /* Check to see if link went down during discovery */ + lpfc_els_chk_latt(phba->pport); + lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD, + "EDC Cmpl: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +static void +lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv; + + lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP); + lft->desc_len = cpu_to_be32( + FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc)); + + lft->degrade_activate_threshold = + cpu_to_be32(phba->degrade_activate_threshold); + lft->degrade_deactivate_threshold = + cpu_to_be32(phba->degrade_deactivate_threshold); + lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval); +} + +static void +lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv; + + /* We are assuming cgd was zero'ed before calling this routine */ + + /* Configure the congestion detection capability */ + cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP); + + /* Descriptor len doesn't include the tag or len fields. */ + cgd->desc_len = cpu_to_be32( + FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc)); + + /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. + * xmt_signal_frequency.count already set to 0. + * xmt_signal_frequency.units already set to 0. + */ + + if (phba->cmf_active_mode == LPFC_CFG_OFF) { + /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED. + * rcv_signal_frequency.count already set to 0. + * rcv_signal_frequency.units already set to 0. + */ + phba->cgn_sig_freq = 0; + return; + } + switch (phba->cgn_reg_signal) { + case EDC_CG_SIG_WARN_ONLY: + cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY); + break; + case EDC_CG_SIG_WARN_ALARM: + cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM); + break; + default: + /* rcv_signal_capability left 0 thus no support */ + break; + } + + /* We start negotiation with lpfc_fabric_cgn_frequency, after + * the completion we settle on the higher frequency. + */ + cgd->rcv_signal_frequency.count = + cpu_to_be16(lpfc_fabric_cgn_frequency); + cgd->rcv_signal_frequency.units = + cpu_to_be16(EDC_CG_SIGFREQ_MSEC); +} + +static bool +lpfc_link_is_lds_capable(struct lpfc_hba *phba) +{ + if (!(phba->lmt & LMT_64Gb)) + return false; + if (phba->sli_rev != LPFC_SLI_REV4) + return false; + + if (phba->sli4_hba.conf_trunk) { + if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G) + return true; + } else if (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) { + return true; + } + return false; +} + + /** + * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric. + * @vport: pointer to a host virtual N_Port data structure. + * @retry: retry counter for the command iocb. + * + * This routine issues an ELS EDC to the F-Port Controller to communicate + * this N_Port's support of hardware signals in its Congestion + * Capabilities Descriptor. + * + * Note: This routine does not check if one or more signals are + * set in the cgn_reg_signal parameter. The caller makes the + * decision to enforce cgn_reg_signal as nonzero or zero depending + * on the conditions. During Fabric requests, the driver + * requires cgn_reg_signals to be nonzero. But a dynamic request + * to set the congestion mode to OFF from Monitor or Manage + * would correctly issue an EDC with no signals enabled to + * turn off switch functionality and then update the FW. + * + * Return code + * 0 - Successfully issued edc command + * 1 - Failed to issue edc command + **/ +int +lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + struct fc_els_edc *edc_req; + struct fc_tlv_desc *tlv; + u16 cmdsize; + struct lpfc_nodelist *ndlp; + u8 *pcmd = NULL; + u32 cgn_desc_size, lft_desc_size; + int rc; + + if (vport->port_type == LPFC_NPIV_PORT) + return -EACCES; + + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + return -ENODEV; + + cgn_desc_size = (phba->cgn_init_reg_signal) ? + sizeof(struct fc_diag_cg_sig_desc) : 0; + lft_desc_size = (lpfc_link_is_lds_capable(phba)) ? + sizeof(struct fc_diag_lnkflt_desc) : 0; + cmdsize = cgn_desc_size + lft_desc_size; + + /* Skip EDC if no applicable descriptors */ + if (!cmdsize) + goto try_rdf; + + cmdsize += sizeof(struct fc_els_edc); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, + ndlp->nlp_DID, ELS_CMD_EDC); + if (!elsiocb) + goto try_rdf; + + /* Configure the payload for the supported Diagnostics capabilities. */ + pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; + memset(pcmd, 0, cmdsize); + edc_req = (struct fc_els_edc *)pcmd; + edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size); + edc_req->edc_cmd = ELS_EDC; + tlv = edc_req->desc; + + if (cgn_desc_size) { + lpfc_format_edc_cgn_desc(phba, tlv); + phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; + tlv = fc_tlv_next_desc(tlv); + } + + if (lft_desc_size) + lpfc_format_edc_lft_desc(phba, tlv); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT, + "4623 Xmit EDC to remote " + "NPORT x%x reg_sig x%x reg_fpin:x%x\n", + ndlp->nlp_DID, phba->cgn_reg_signal, + phba->cgn_reg_fpin); + + elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return -EIO; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue EDC: did:x%x refcnt %d", + ndlp->nlp_DID, kref_read(&ndlp->kref), 0); + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + /* The additional lpfc_nlp_put will cause the following + * lpfc_els_free_iocb routine to trigger the rlease of + * the node. + */ + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + goto try_rdf; + } + return 0; +try_rdf: + phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM; + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + rc = lpfc_issue_els_rdf(vport, 0); + return rc; +} + +/** + * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry + * @vport: pointer to a host virtual N_Port data structure. + * @nlp: pointer to a node-list data structure. + * + * This routine cancels the timer with a delayed IOCB-command retry for + * a @vport's @ndlp. It stops the timer for the delayed function retrial and + * removes the ELS retry event if it presents. In addition, if the + * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB + * commands are sent for the @vport's nodes that require issuing discovery + * ADISC. + **/ +void +lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_work_evt *evtp; + + if (!(nlp->nlp_flag & NLP_DELAY_TMO)) + return; + spin_lock_irq(&nlp->lock); + nlp->nlp_flag &= ~NLP_DELAY_TMO; + spin_unlock_irq(&nlp->lock); + del_timer_sync(&nlp->nlp_delayfunc); + nlp->nlp_last_elscmd = 0; + if (!list_empty(&nlp->els_retry_evt.evt_listp)) { + list_del_init(&nlp->els_retry_evt.evt_listp); + /* Decrement nlp reference count held for the delayed retry */ + evtp = &nlp->els_retry_evt; + lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1); + } + if (nlp->nlp_flag & NLP_NPR_2B_DISC) { + spin_lock_irq(&nlp->lock); + nlp->nlp_flag &= ~NLP_NPR_2B_DISC; + spin_unlock_irq(&nlp->lock); + if (vport->num_disc_nodes) { + if (vport->port_state < LPFC_VPORT_READY) { + /* Check if there are more ADISCs to be sent */ + lpfc_more_adisc(vport); + } else { + /* Check if there are more PLOGIs to be sent */ + lpfc_more_plogi(vport); + if (vport->num_disc_nodes == 0) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NDISC_ACTIVE; + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + lpfc_end_rscn(vport); + } + } + } + } + return; +} + +/** + * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer + * @t: pointer to the timer function associated data (ndlp). + * + * This routine is invoked by the ndlp delayed-function timer to check + * whether there is any pending ELS retry event(s) with the node. If not, it + * simply returns. Otherwise, if there is at least one ELS delayed event, it + * adds the delayed events to the HBA work list and invokes the + * lpfc_worker_wake_up() routine to wake up worker thread to process the + * event. Note that lpfc_nlp_get() is called before posting the event to + * the work list to hold reference count of ndlp so that it guarantees the + * reference to ndlp will still be available when the worker thread gets + * to the event associated with the ndlp. + **/ +void +lpfc_els_retry_delay(struct timer_list *t) +{ + struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc); + struct lpfc_vport *vport = ndlp->vport; + struct lpfc_hba *phba = vport->phba; + unsigned long flags; + struct lpfc_work_evt *evtp = &ndlp->els_retry_evt; + + spin_lock_irqsave(&phba->hbalock, flags); + if (!list_empty(&evtp->evt_listp)) { + spin_unlock_irqrestore(&phba->hbalock, flags); + return; + } + + /* We need to hold the node by incrementing the reference + * count until the queued work is done + */ + evtp->evt_arg1 = lpfc_nlp_get(ndlp); + if (evtp->evt_arg1) { + evtp->evt = LPFC_EVT_ELS_RETRY; + list_add_tail(&evtp->evt_listp, &phba->work_list); + lpfc_worker_wake_up(phba); + } + spin_unlock_irqrestore(&phba->hbalock, flags); + return; +} + +/** + * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function + * @ndlp: pointer to a node-list data structure. + * + * This routine is the worker-thread handler for processing the @ndlp delayed + * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves + * the last ELS command from the associated ndlp and invokes the proper ELS + * function according to the delayed ELS command to retry the command. + **/ +void +lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp) +{ + struct lpfc_vport *vport = ndlp->vport; + uint32_t cmd, retry; + + spin_lock_irq(&ndlp->lock); + cmd = ndlp->nlp_last_elscmd; + ndlp->nlp_last_elscmd = 0; + + if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) { + spin_unlock_irq(&ndlp->lock); + return; + } + + ndlp->nlp_flag &= ~NLP_DELAY_TMO; + spin_unlock_irq(&ndlp->lock); + /* + * If a discovery event readded nlp_delayfunc after timer + * firing and before processing the timer, cancel the + * nlp_delayfunc. + */ + del_timer_sync(&ndlp->nlp_delayfunc); + retry = ndlp->nlp_retry; + ndlp->nlp_retry = 0; + + switch (cmd) { + case ELS_CMD_FLOGI: + lpfc_issue_els_flogi(vport, ndlp, retry); + break; + case ELS_CMD_PLOGI: + if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + } + break; + case ELS_CMD_ADISC: + if (!lpfc_issue_els_adisc(vport, ndlp, retry)) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); + } + break; + case ELS_CMD_PRLI: + case ELS_CMD_NVMEPRLI: + if (!lpfc_issue_els_prli(vport, ndlp, retry)) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); + } + break; + case ELS_CMD_LOGO: + if (!lpfc_issue_els_logo(vport, ndlp, retry)) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); + } + break; + case ELS_CMD_FDISC: + if (!(vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)) + lpfc_issue_els_fdisc(vport, ndlp, retry); + break; + } + return; +} + +/** + * lpfc_link_reset - Issue link reset + * @vport: pointer to a virtual N_Port data structure. + * + * This routine performs link reset by sending INIT_LINK mailbox command. + * For SLI-3 adapter, link attention interrupt is enabled before issuing + * INIT_LINK mailbox command. + * + * Return code + * 0 - Link reset initiated successfully + * 1 - Failed to initiate link reset + **/ +int +lpfc_link_reset(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mbox; + uint32_t control; + int rc; + + lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, + "2851 Attempt link reset\n"); + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "2852 Failed to allocate mbox memory"); + return 1; + } + + /* Enable Link attention interrupts */ + if (phba->sli_rev <= LPFC_SLI_REV3) { + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag |= LPFC_PROCESS_LA; + control = readl(phba->HCregaddr); + control |= HC_LAINT_ENA; + writel(control, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + spin_unlock_irq(&phba->hbalock); + } + + lpfc_init_link(phba, mbox, phba->cfg_topology, + phba->cfg_link_speed); + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "2853 Failed to issue INIT_LINK " + "mbox command, rc:x%x\n", rc); + mempool_free(mbox, phba->mbox_mem_pool); + return 1; + } + + return 0; +} + +/** + * lpfc_els_retry - Make retry decision on an els command iocb + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine makes a retry decision on an ELS command IOCB, which has + * failed. The following ELS IOCBs use this function for retrying the command + * when previously issued command responsed with error status: FLOGI, PLOGI, + * PRLI, ADISC and FDISC. Based on the ELS command type and the + * returned error status, it makes the decision whether a retry shall be + * issued for the command, and whether a retry shall be made immediately or + * delayed. In the former case, the corresponding ELS command issuing-function + * is called to retry the command. In the later case, the ELS command shall + * be posted to the ndlp delayed event and delayed function timer set to the + * ndlp for the delayed command issusing. + * + * Return code + * 0 - No retry of els command is made + * 1 - Immediate or delayed retry of els command is made + **/ +static int +lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + union lpfc_wqe128 *irsp = &rspiocb->wqe; + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf; + uint32_t *elscmd; + struct ls_rjt stat; + int retry = 0, maxretry = lpfc_max_els_tries, delay = 0; + int logerr = 0; + uint32_t cmd = 0; + uint32_t did; + int link_reset = 0, rc; + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + + + /* Note: cmd_dmabuf may be 0 for internal driver abort + * of delays ELS command. + */ + + if (pcmd && pcmd->virt) { + elscmd = (uint32_t *) (pcmd->virt); + cmd = *elscmd++; + } + + if (ndlp) + did = ndlp->nlp_DID; + else { + /* We should only hit this case for retrying PLOGI */ + did = get_job_els_rsp64_did(phba, rspiocb); + ndlp = lpfc_findnode_did(vport, did); + if (!ndlp && (cmd != ELS_CMD_PLOGI)) + return 0; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Retry ELS: wd7:x%x wd4:x%x did:x%x", + *(((uint32_t *)irsp) + 7), ulp_word4, did); + + switch (ulp_status) { + case IOSTAT_FCP_RSP_ERROR: + break; + case IOSTAT_REMOTE_STOP: + if (phba->sli_rev == LPFC_SLI_REV4) { + /* This IO was aborted by the target, we don't + * know the rxid and because we did not send the + * ABTS we cannot generate and RRQ. + */ + lpfc_set_rrq_active(phba, ndlp, + cmdiocb->sli4_lxritag, 0, 0); + } + break; + case IOSTAT_LOCAL_REJECT: + switch ((ulp_word4 & IOERR_PARAM_MASK)) { + case IOERR_LOOP_OPEN_FAILURE: + if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0) + delay = 1000; + retry = 1; + break; + + case IOERR_ILLEGAL_COMMAND: + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0124 Retry illegal cmd x%x " + "retry:x%x delay:x%x\n", + cmd, cmdiocb->retry, delay); + retry = 1; + /* All command's retry policy */ + maxretry = 8; + if (cmdiocb->retry > 2) + delay = 1000; + break; + + case IOERR_NO_RESOURCES: + logerr = 1; /* HBA out of resources */ + retry = 1; + if (cmdiocb->retry > 100) + delay = 100; + maxretry = 250; + break; + + case IOERR_ILLEGAL_FRAME: + delay = 100; + retry = 1; + break; + + case IOERR_INVALID_RPI: + if (cmd == ELS_CMD_PLOGI && + did == NameServer_DID) { + /* Continue forever if plogi to */ + /* the nameserver fails */ + maxretry = 0; + delay = 100; + } + retry = 1; + break; + + case IOERR_SEQUENCE_TIMEOUT: + if (cmd == ELS_CMD_PLOGI && + did == NameServer_DID && + (cmdiocb->retry + 1) == maxretry) { + /* Reset the Link */ + link_reset = 1; + break; + } + retry = 1; + delay = 100; + break; + case IOERR_SLI_ABORTED: + /* Retry ELS PLOGI command? + * Possibly the rport just wasn't ready. + */ + if (cmd == ELS_CMD_PLOGI) { + /* No retry if state change */ + if (ndlp && + ndlp->nlp_state != NLP_STE_PLOGI_ISSUE) + goto out_retry; + retry = 1; + maxretry = 2; + } + break; + } + break; + + case IOSTAT_NPORT_RJT: + case IOSTAT_FABRIC_RJT: + if (ulp_word4 & RJT_UNAVAIL_TEMP) { + retry = 1; + break; + } + break; + + case IOSTAT_NPORT_BSY: + case IOSTAT_FABRIC_BSY: + logerr = 1; /* Fabric / Remote NPort out of resources */ + retry = 1; + break; + + case IOSTAT_LS_RJT: + stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); + /* Added for Vendor specifc support + * Just keep retrying for these Rsn / Exp codes + */ + if ((vport->fc_flag & FC_PT2PT) && + cmd == ELS_CMD_NVMEPRLI) { + switch (stat.un.b.lsRjtRsnCode) { + case LSRJT_UNABLE_TPC: + case LSRJT_INVALID_CMD: + case LSRJT_LOGICAL_ERR: + case LSRJT_CMD_UNSUPPORTED: + lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, + "0168 NVME PRLI LS_RJT " + "reason %x port doesn't " + "support NVME, disabling NVME\n", + stat.un.b.lsRjtRsnCode); + retry = 0; + vport->fc_flag |= FC_PT2PT_NO_NVME; + goto out_retry; + } + } + switch (stat.un.b.lsRjtRsnCode) { + case LSRJT_UNABLE_TPC: + /* Special case for PRLI LS_RJTs. Recall that lpfc + * uses a single routine to issue both PRLI FC4 types. + * If the PRLI is rejected because that FC4 type + * isn't really supported, don't retry and cause + * multiple transport registrations. Otherwise, parse + * the reason code/reason code explanation and take the + * appropriate action. + */ + lpfc_printf_vlog(vport, KERN_INFO, + LOG_DISCOVERY | LOG_ELS | LOG_NODE, + "0153 ELS cmd x%x LS_RJT by x%x. " + "RsnCode x%x RsnCodeExp x%x\n", + cmd, did, stat.un.b.lsRjtRsnCode, + stat.un.b.lsRjtRsnCodeExp); + + switch (stat.un.b.lsRjtRsnCodeExp) { + case LSEXP_CANT_GIVE_DATA: + case LSEXP_CMD_IN_PROGRESS: + if (cmd == ELS_CMD_PLOGI) { + delay = 1000; + maxretry = 48; + } + retry = 1; + break; + case LSEXP_REQ_UNSUPPORTED: + case LSEXP_NO_RSRC_ASSIGN: + /* These explanation codes get no retry. */ + if (cmd == ELS_CMD_PRLI || + cmd == ELS_CMD_NVMEPRLI) + break; + fallthrough; + default: + /* Limit the delay and retry action to a limited + * cmd set. There are other ELS commands where + * a retry is not expected. + */ + if (cmd == ELS_CMD_PLOGI || + cmd == ELS_CMD_PRLI || + cmd == ELS_CMD_NVMEPRLI) { + delay = 1000; + maxretry = lpfc_max_els_tries + 1; + retry = 1; + } + break; + } + + if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && + (cmd == ELS_CMD_FDISC) && + (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){ + lpfc_printf_vlog(vport, KERN_ERR, + LOG_TRACE_EVENT, + "0125 FDISC Failed (x%x). " + "Fabric out of resources\n", + stat.un.lsRjtError); + lpfc_vport_set_state(vport, + FC_VPORT_NO_FABRIC_RSCS); + } + break; + + case LSRJT_LOGICAL_BSY: + if ((cmd == ELS_CMD_PLOGI) || + (cmd == ELS_CMD_PRLI) || + (cmd == ELS_CMD_NVMEPRLI)) { + delay = 1000; + maxretry = 48; + } else if (cmd == ELS_CMD_FDISC) { + /* FDISC retry policy */ + maxretry = 48; + if (cmdiocb->retry >= 32) + delay = 1000; + } + retry = 1; + break; + + case LSRJT_LOGICAL_ERR: + /* There are some cases where switches return this + * error when they are not ready and should be returning + * Logical Busy. We should delay every time. + */ + if (cmd == ELS_CMD_FDISC && + stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) { + maxretry = 3; + delay = 1000; + retry = 1; + } else if (cmd == ELS_CMD_FLOGI && + stat.un.b.lsRjtRsnCodeExp == + LSEXP_NOTHING_MORE) { + vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf; + retry = 1; + lpfc_printf_vlog(vport, KERN_ERR, + LOG_TRACE_EVENT, + "0820 FLOGI Failed (x%x). " + "BBCredit Not Supported\n", + stat.un.lsRjtError); + } + break; + + case LSRJT_PROTOCOL_ERR: + if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && + (cmd == ELS_CMD_FDISC) && + ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) || + (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID)) + ) { + lpfc_printf_vlog(vport, KERN_ERR, + LOG_TRACE_EVENT, + "0122 FDISC Failed (x%x). " + "Fabric Detected Bad WWN\n", + stat.un.lsRjtError); + lpfc_vport_set_state(vport, + FC_VPORT_FABRIC_REJ_WWN); + } + break; + case LSRJT_VENDOR_UNIQUE: + if ((stat.un.b.vendorUnique == 0x45) && + (cmd == ELS_CMD_FLOGI)) { + goto out_retry; + } + break; + case LSRJT_CMD_UNSUPPORTED: + /* lpfc nvmet returns this type of LS_RJT when it + * receives an FCP PRLI because lpfc nvmet only + * support NVME. ELS request is terminated for FCP4 + * on this rport. + */ + if (stat.un.b.lsRjtRsnCodeExp == + LSEXP_REQ_UNSUPPORTED) { + if (cmd == ELS_CMD_PRLI) + goto out_retry; + } + break; + } + break; + + case IOSTAT_INTERMED_RSP: + case IOSTAT_BA_RJT: + break; + + default: + break; + } + + if (link_reset) { + rc = lpfc_link_reset(vport); + if (rc) { + /* Do not give up. Retry PLOGI one more time and attempt + * link reset if PLOGI fails again. + */ + retry = 1; + delay = 100; + goto out_retry; + } + return 1; + } + + if (did == FDMI_DID) + retry = 1; + + if ((cmd == ELS_CMD_FLOGI) && + (phba->fc_topology != LPFC_TOPOLOGY_LOOP) && + !lpfc_error_lost_link(ulp_status, ulp_word4)) { + /* FLOGI retry policy */ + retry = 1; + /* retry FLOGI forever */ + if (phba->link_flag != LS_LOOPBACK_MODE) + maxretry = 0; + else + maxretry = 2; + + if (cmdiocb->retry >= 100) + delay = 5000; + else if (cmdiocb->retry >= 32) + delay = 1000; + } else if ((cmd == ELS_CMD_FDISC) && + !lpfc_error_lost_link(ulp_status, ulp_word4)) { + /* retry FDISCs every second up to devloss */ + retry = 1; + maxretry = vport->cfg_devloss_tmo; + delay = 1000; + } + + cmdiocb->retry++; + if (maxretry && (cmdiocb->retry >= maxretry)) { + phba->fc_stat.elsRetryExceeded++; + retry = 0; + } + + if ((vport->load_flag & FC_UNLOADING) != 0) + retry = 0; + +out_retry: + if (retry) { + if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) { + /* Stop retrying PLOGI and FDISC if in FCF discovery */ + if (phba->fcf.fcf_flag & FCF_DISCOVERY) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2849 Stop retry ELS command " + "x%x to remote NPORT x%x, " + "Data: x%x x%x\n", cmd, did, + cmdiocb->retry, delay); + return 0; + } + } + + /* Retry ELS command <elsCmd> to remote NPORT <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0107 Retry ELS command x%x to remote " + "NPORT x%x Data: x%x x%x\n", + cmd, did, cmdiocb->retry, delay); + + if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) && + ((ulp_status != IOSTAT_LOCAL_REJECT) || + ((ulp_word4 & IOERR_PARAM_MASK) != + IOERR_NO_RESOURCES))) { + /* Don't reset timer for no resources */ + + /* If discovery / RSCN timer is running, reset it */ + if (timer_pending(&vport->fc_disctmo) || + (vport->fc_flag & FC_RSCN_MODE)) + lpfc_set_disctmo(vport); + } + + phba->fc_stat.elsXmitRetry++; + if (ndlp && delay) { + phba->fc_stat.elsDelayRetry++; + ndlp->nlp_retry = cmdiocb->retry; + + /* delay is specified in milliseconds */ + mod_timer(&ndlp->nlp_delayfunc, + jiffies + msecs_to_jiffies(delay)); + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_DELAY_TMO; + spin_unlock_irq(&ndlp->lock); + + ndlp->nlp_prev_state = ndlp->nlp_state; + if ((cmd == ELS_CMD_PRLI) || + (cmd == ELS_CMD_NVMEPRLI)) + lpfc_nlp_set_state(vport, ndlp, + NLP_STE_PRLI_ISSUE); + else if (cmd != ELS_CMD_ADISC) + lpfc_nlp_set_state(vport, ndlp, + NLP_STE_NPR_NODE); + ndlp->nlp_last_elscmd = cmd; + + return 1; + } + switch (cmd) { + case ELS_CMD_FLOGI: + lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry); + return 1; + case ELS_CMD_FDISC: + lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry); + return 1; + case ELS_CMD_PLOGI: + if (ndlp) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, + NLP_STE_PLOGI_ISSUE); + } + lpfc_issue_els_plogi(vport, did, cmdiocb->retry); + return 1; + case ELS_CMD_ADISC: + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); + lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry); + return 1; + case ELS_CMD_PRLI: + case ELS_CMD_NVMEPRLI: + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE); + lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry); + return 1; + case ELS_CMD_LOGO: + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE); + lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry); + return 1; + } + } + /* No retry ELS command <elsCmd> to remote NPORT <did> */ + if (logerr) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0137 No retry ELS command x%x to remote " + "NPORT x%x: Out of Resources: Error:x%x/%x\n", + cmd, did, ulp_status, + ulp_word4); + } + else { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0108 No retry ELS command x%x to remote " + "NPORT x%x Retried:%d Error:x%x/%x\n", + cmd, did, cmdiocb->retry, ulp_status, + ulp_word4); + } + return 0; +} + +/** + * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb + * @phba: pointer to lpfc hba data structure. + * @buf_ptr1: pointer to the lpfc DMA buffer data structure. + * + * This routine releases the lpfc DMA (Direct Memory Access) buffer(s) + * associated with a command IOCB back to the lpfc DMA buffer pool. It first + * checks to see whether there is a lpfc DMA buffer associated with the + * response of the command IOCB. If so, it will be released before releasing + * the lpfc DMA buffer associated with the IOCB itself. + * + * Return code + * 0 - Successfully released lpfc DMA buffer (currently, always return 0) + **/ +static int +lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1) +{ + struct lpfc_dmabuf *buf_ptr; + + /* Free the response before processing the command. */ + if (!list_empty(&buf_ptr1->list)) { + list_remove_head(&buf_ptr1->list, buf_ptr, + struct lpfc_dmabuf, + list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); + kfree(buf_ptr1); + return 0; +} + +/** + * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl + * @phba: pointer to lpfc hba data structure. + * @buf_ptr: pointer to the lpfc dma buffer data structure. + * + * This routine releases the lpfc Direct Memory Access (DMA) buffer + * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer + * pool. + * + * Return code + * 0 - Successfully released lpfc DMA buffer (currently, always return 0) + **/ +static int +lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr) +{ + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + return 0; +} + +/** + * lpfc_els_free_iocb - Free a command iocb and its associated resources + * @phba: pointer to lpfc hba data structure. + * @elsiocb: pointer to lpfc els command iocb data structure. + * + * This routine frees a command IOCB and its associated resources. The + * command IOCB data structure contains the reference to various associated + * resources, these fields must be set to NULL if the associated reference + * not present: + * cmd_dmabuf - reference to cmd. + * cmd_dmabuf->next - reference to rsp + * rsp_dmabuf - unused + * bpl_dmabuf - reference to bpl + * + * It first properly decrements the reference count held on ndlp for the + * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not + * set, it invokes the lpfc_els_free_data() routine to release the Direct + * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it + * adds the DMA buffer the @phba data structure for the delayed release. + * If reference to the Buffer Pointer List (BPL) is present, the + * lpfc_els_free_bpl() routine is invoked to release the DMA memory + * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is + * invoked to release the IOCB data structure back to @phba IOCBQ list. + * + * Return code + * 0 - Success (currently, always return 0) + **/ +int +lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb) +{ + struct lpfc_dmabuf *buf_ptr, *buf_ptr1; + + /* The I/O iocb is complete. Clear the node and first dmbuf */ + elsiocb->ndlp = NULL; + + /* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */ + if (elsiocb->cmd_dmabuf) { + if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) { + /* Firmware could still be in progress of DMAing + * payload, so don't free data buffer till after + * a hbeat. + */ + elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE; + buf_ptr = elsiocb->cmd_dmabuf; + elsiocb->cmd_dmabuf = NULL; + if (buf_ptr) { + buf_ptr1 = NULL; + spin_lock_irq(&phba->hbalock); + if (!list_empty(&buf_ptr->list)) { + list_remove_head(&buf_ptr->list, + buf_ptr1, struct lpfc_dmabuf, + list); + INIT_LIST_HEAD(&buf_ptr1->list); + list_add_tail(&buf_ptr1->list, + &phba->elsbuf); + phba->elsbuf_cnt++; + } + INIT_LIST_HEAD(&buf_ptr->list); + list_add_tail(&buf_ptr->list, &phba->elsbuf); + phba->elsbuf_cnt++; + spin_unlock_irq(&phba->hbalock); + } + } else { + buf_ptr1 = elsiocb->cmd_dmabuf; + lpfc_els_free_data(phba, buf_ptr1); + elsiocb->cmd_dmabuf = NULL; + } + } + + if (elsiocb->bpl_dmabuf) { + buf_ptr = elsiocb->bpl_dmabuf; + lpfc_els_free_bpl(phba, buf_ptr); + elsiocb->bpl_dmabuf = NULL; + } + lpfc_sli_release_iocbq(phba, elsiocb); + return 0; +} + +/** + * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function to the Logout (LOGO) + * Accept (ACC) Response ELS command. This routine is invoked to indicate + * the completion of the LOGO process. If the node has transitioned to NPR, + * this routine unregisters the RPI if it is still registered. The + * lpfc_els_free_iocb() is invoked to release the IOCB data structure. + **/ +static void +lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_vport *vport = cmdiocb->vport; + u32 ulp_status, ulp_word4; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "ACC LOGO cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, ndlp->nlp_DID); + /* ACC to LOGO completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0109 ACC to LOGO completes to NPort x%x refcnt %d " + "Data: x%x x%x x%x\n", + ndlp->nlp_DID, kref_read(&ndlp->kref), ndlp->nlp_flag, + ndlp->nlp_state, ndlp->nlp_rpi); + + /* This clause allows the LOGO ACC to complete and free resources + * for the Fabric Domain Controller. It does deliberately skip + * the unreg_rpi and release rpi because some fabrics send RDP + * requests after logging out from the initiator. + */ + if (ndlp->nlp_type & NLP_FABRIC && + ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK)) + goto out; + + if (ndlp->nlp_state == NLP_STE_NPR_NODE) { + /* If PLOGI is being retried, PLOGI completion will cleanup the + * node. The NLP_NPR_2B_DISC flag needs to be retained to make + * progress on nodes discovered from last RSCN. + */ + if ((ndlp->nlp_flag & NLP_DELAY_TMO) && + (ndlp->nlp_last_elscmd == ELS_CMD_PLOGI)) + goto out; + + if (ndlp->nlp_flag & NLP_RPI_REGISTERED) + lpfc_unreg_rpi(vport, ndlp); + + } + out: + /* + * The driver received a LOGO from the rport and has ACK'd it. + * At this point, the driver is done so release the IOCB + */ + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +/** + * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd + * @phba: pointer to lpfc hba data structure. + * @pmb: pointer to the driver internal queue element for mailbox command. + * + * This routine is the completion callback function for unregister default + * RPI (Remote Port Index) mailbox command to the @phba. It simply releases + * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and + * decrements the ndlp reference count held for this completion callback + * function. After that, it invokes the lpfc_drop_node to check + * whether it is appropriate to release the node. + **/ +void +lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; + u32 mbx_flag = pmb->mbox_flag; + u32 mbx_cmd = pmb->u.mb.mbxCommand; + + if (ndlp) { + lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, + "0006 rpi x%x DID:%x flg:%x %d x%px " + "mbx_cmd x%x mbx_flag x%x x%px\n", + ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag, + kref_read(&ndlp->kref), ndlp, mbx_cmd, + mbx_flag, pmb); + + /* This ends the default/temporary RPI cleanup logic for this + * ndlp and the node and rpi needs to be released. Free the rpi + * first on an UNREG_LOGIN and then release the final + * references. + */ + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; + if (mbx_cmd == MBX_UNREG_LOGIN) + ndlp->nlp_flag &= ~NLP_UNREG_INP; + spin_unlock_irq(&ndlp->lock); + lpfc_nlp_put(ndlp); + lpfc_drop_node(ndlp->vport, ndlp); + } + + lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED); +} + +/** + * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function for ELS Response IOCB + * command. In normal case, this callback function just properly sets the + * nlp_flag bitmap in the ndlp data structure, if the mbox command reference + * field in the command IOCB is not NULL, the referred mailbox command will + * be send out, and then invokes the lpfc_els_free_iocb() routine to release + * the IOCB. + **/ +static void +lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL; + struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL; + IOCB_t *irsp; + LPFC_MBOXQ_t *mbox = NULL; + u32 ulp_status, ulp_word4, tmo, did, iotag; + + if (!vport) { + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "3177 ELS response failed\n"); + goto out; + } + if (cmdiocb->context_un.mbox) + mbox = cmdiocb->context_un.mbox; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + did = get_job_els_rsp64_did(phba, cmdiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + tmo = get_wqe_tmo(cmdiocb); + iotag = get_wqe_reqtag(cmdiocb); + } else { + irsp = &rspiocb->iocb; + tmo = irsp->ulpTimeout; + iotag = irsp->ulpIoTag; + } + + /* Check to see if link went down during discovery */ + if (!ndlp || lpfc_els_chk_latt(vport)) { + if (mbox) + lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); + goto out; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "ELS rsp cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + /* ELS response tag <ulpIoTag> completes */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0110 ELS response tag x%x completes " + "Data: x%x x%x x%x x%x x%x x%x x%x x%x %p %p\n", + iotag, ulp_status, ulp_word4, tmo, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp); + if (mbox) { + if (ulp_status == 0 + && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) { + if (!lpfc_unreg_rpi(vport, ndlp) && + (!(vport->fc_flag & FC_PT2PT))) { + if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || + ndlp->nlp_state == + NLP_STE_REG_LOGIN_ISSUE) { + lpfc_printf_vlog(vport, KERN_INFO, + LOG_DISCOVERY, + "0314 PLOGI recov " + "DID x%x " + "Data: x%x x%x x%x\n", + ndlp->nlp_DID, + ndlp->nlp_state, + ndlp->nlp_rpi, + ndlp->nlp_flag); + goto out_free_mbox; + } + } + + /* Increment reference count to ndlp to hold the + * reference to ndlp for the callback function. + */ + mbox->ctx_ndlp = lpfc_nlp_get(ndlp); + if (!mbox->ctx_ndlp) + goto out_free_mbox; + + mbox->vport = vport; + if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) { + mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; + mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; + } + else { + mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login; + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, + NLP_STE_REG_LOGIN_ISSUE); + } + + ndlp->nlp_flag |= NLP_REG_LOGIN_SEND; + if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) + != MBX_NOT_FINISHED) + goto out; + + /* Decrement the ndlp reference count we + * set for this failed mailbox command. + */ + lpfc_nlp_put(ndlp); + ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND; + + /* ELS rsp: Cannot issue reg_login for <NPortid> */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0138 ELS rsp: Cannot issue reg_login for x%x " + "Data: x%x x%x x%x\n", + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + } +out_free_mbox: + lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); + } +out: + if (ndlp && shost) { + spin_lock_irq(&ndlp->lock); + if (mbox) + ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN; + ndlp->nlp_flag &= ~NLP_RM_DFLT_RPI; + spin_unlock_irq(&ndlp->lock); + } + + /* An SLI4 NPIV instance wants to drop the node at this point under + * these conditions and release the RPI. + */ + if (phba->sli_rev == LPFC_SLI_REV4 && + vport && vport->port_type == LPFC_NPIV_PORT && + !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { + if (ndlp->nlp_flag & NLP_RELEASE_RPI) { + if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE && + ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE) { + lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi); + spin_lock_irq(&ndlp->lock); + ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR; + ndlp->nlp_flag &= ~NLP_RELEASE_RPI; + spin_unlock_irq(&ndlp->lock); + } + lpfc_drop_node(vport, ndlp); + } else if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE && + ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE && + ndlp->nlp_state != NLP_STE_PRLI_ISSUE) { + /* Drop ndlp if there is no planned or outstanding + * issued PRLI. + * + * In cases when the ndlp is acting as both an initiator + * and target function, let our issued PRLI determine + * the final ndlp kref drop. + */ + lpfc_drop_node(vport, ndlp); + } + } + + /* Release the originating I/O reference. */ + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); + return; +} + +/** + * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command + * @vport: pointer to a host virtual N_Port data structure. + * @flag: the els command code to be accepted. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * @mbox: pointer to the driver internal queue element for mailbox command. + * + * This routine prepares and issues an Accept (ACC) response IOCB + * command. It uses the @flag to properly set up the IOCB field for the + * specific ACC response command to be issued and invokes the + * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a + * @mbox pointer is passed in, it will be put into the context_un.mbox + * field of the IOCB for the completion callback function to issue the + * mailbox command to the HBA later when callback is invoked. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the corresponding + * response ELS IOCB command. + * + * Return code + * 0 - Successfully issued acc response + * 1 - Failed to issue acc response + **/ +int +lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag, + struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, + LPFC_MBOXQ_t *mbox) +{ + struct lpfc_hba *phba = vport->phba; + IOCB_t *icmd; + IOCB_t *oldcmd; + union lpfc_wqe128 *wqe; + union lpfc_wqe128 *oldwqe = &oldiocb->wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + struct serv_parm *sp; + uint16_t cmdsize; + int rc; + ELS_PKT *els_pkt_ptr; + struct fc_els_rdf_resp *rdf_resp; + + switch (flag) { + case ELS_CMD_ACC: + cmdsize = sizeof(uint32_t); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, + ndlp, ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_LOGO_ACC; + spin_unlock_irq(&ndlp->lock); + return 1; + } + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* XRI / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_ctxt_tag, + &oldwqe->xmit_els_rsp.wqe_com)); + + /* oxid */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_rcvoxid, + &oldwqe->xmit_els_rsp.wqe_com)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + pcmd = elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC: did:x%x flg:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, 0); + break; + case ELS_CMD_FLOGI: + case ELS_CMD_PLOGI: + cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t)); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, + ndlp, ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* XRI / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_ctxt_tag, + &oldwqe->xmit_els_rsp.wqe_com)); + + /* oxid */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_rcvoxid, + &oldwqe->xmit_els_rsp.wqe_com)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; + + if (mbox) + elsiocb->context_un.mbox = mbox; + + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); + sp = (struct serv_parm *)pcmd; + + if (flag == ELS_CMD_FLOGI) { + /* Copy the received service parameters back */ + memcpy(sp, &phba->fc_fabparam, + sizeof(struct serv_parm)); + + /* Clear the F_Port bit */ + sp->cmn.fPort = 0; + + /* Mark all class service parameters as invalid */ + sp->cls1.classValid = 0; + sp->cls2.classValid = 0; + sp->cls3.classValid = 0; + sp->cls4.classValid = 0; + + /* Copy our worldwide names */ + memcpy(&sp->portName, &vport->fc_sparam.portName, + sizeof(struct lpfc_name)); + memcpy(&sp->nodeName, &vport->fc_sparam.nodeName, + sizeof(struct lpfc_name)); + } else { + memcpy(pcmd, &vport->fc_sparam, + sizeof(struct serv_parm)); + + sp->cmn.valid_vendor_ver_level = 0; + memset(sp->un.vendorVersion, 0, + sizeof(sp->un.vendorVersion)); + sp->cmn.bbRcvSizeMsb &= 0xF; + + /* If our firmware supports this feature, convey that + * info to the target using the vendor specific field. + */ + if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) { + sp->cmn.valid_vendor_ver_level = 1; + sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID); + sp->un.vv.flags = + cpu_to_be32(LPFC_VV_SUPPRESS_RSP); + } + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC FLOGI/PLOGI: did:x%x flg:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, 0); + break; + case ELS_CMD_PRLO: + cmdsize = sizeof(uint32_t) + sizeof(PRLO); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, + ndlp, ndlp->nlp_DID, ELS_CMD_PRLO); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* XRI / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_ctxt_tag, + &oldwqe->xmit_els_rsp.wqe_com)); + + /* oxid */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_rcvoxid, + &oldwqe->xmit_els_rsp.wqe_com)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + pcmd = (u8 *) elsiocb->cmd_dmabuf->virt; + + memcpy(pcmd, oldiocb->cmd_dmabuf->virt, + sizeof(uint32_t) + sizeof(PRLO)); + *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC; + els_pkt_ptr = (ELS_PKT *) pcmd; + els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC PRLO: did:x%x flg:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, 0); + break; + case ELS_CMD_RDF: + cmdsize = sizeof(*rdf_resp); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, + ndlp, ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* XRI / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_ctxt_tag, + &oldwqe->xmit_els_rsp.wqe_com)); + + /* oxid */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + bf_get(wqe_rcvoxid, + &oldwqe->xmit_els_rsp.wqe_com)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; + rdf_resp = (struct fc_els_rdf_resp *)pcmd; + memset(rdf_resp, 0, sizeof(*rdf_resp)); + rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC; + + /* FC-LS-5 specifies desc_list_len shall be set to 12 */ + rdf_resp->desc_list_len = cpu_to_be32(12); + + /* FC-LS-5 specifies LS REQ Information descriptor */ + rdf_resp->lsri.desc_tag = cpu_to_be32(1); + rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32)); + rdf_resp->lsri.rqst_w0.cmd = ELS_RDF; + break; + default: + return 1; + } + if (ndlp->nlp_flag & NLP_LOGO_ACC) { + spin_lock_irq(&ndlp->lock); + if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED || + ndlp->nlp_flag & NLP_REG_LOGIN_SEND)) + ndlp->nlp_flag &= ~NLP_LOGO_ACC; + spin_unlock_irq(&ndlp->lock); + elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc; + } else { + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + } + + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + /* Xmit ELS ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, " + "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " + "RPI: x%x, fc_flag x%x refcnt %d\n", + rc, elsiocb->iotag, elsiocb->sli4_xritag, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref)); + return 0; +} + +/** + * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command + * @vport: pointer to a virtual N_Port data structure. + * @rejectError: reject response to issue + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * @mbox: pointer to the driver internal queue element for mailbox command. + * + * This routine prepares and issue an Reject (RJT) response IOCB + * command. If a @mbox pointer is passed in, it will be put into the + * context_un.mbox field of the IOCB for the completion callback function + * to issue to the HBA later. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the reject response + * ELS IOCB command. + * + * Return code + * 0 - Successfully issued reject response + * 1 - Failed to issue reject response + **/ +int +lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError, + struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp, + LPFC_MBOXQ_t *mbox) +{ + int rc; + struct lpfc_hba *phba = vport->phba; + IOCB_t *icmd; + IOCB_t *oldcmd; + union lpfc_wqe128 *wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + + cmdsize = 2 * sizeof(uint32_t); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, ELS_CMD_LS_RJT); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; + pcmd += sizeof(uint32_t); + *((uint32_t *) (pcmd)) = rejectError; + + if (mbox) + elsiocb->context_un.mbox = mbox; + + /* Xmit ELS RJT <err> response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0129 Xmit ELS RJT x%x response tag x%x " + "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " + "rpi x%x\n", + rejectError, elsiocb->iotag, + get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID, + ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi); + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue LS_RJT: did:x%x flg:x%x err:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, rejectError); + + phba->fc_stat.elsXmitLSRJT++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + /* The NPIV instance is rejecting this unsolicited ELS. Make sure the + * node's assigned RPI gets released provided this node is not already + * registered with the transport. + */ + if (phba->sli_rev == LPFC_SLI_REV4 && + vport->port_type == LPFC_NPIV_PORT && + !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) { + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_RELEASE_RPI; + spin_unlock_irq(&ndlp->lock); + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + + /** + * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric. + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: NPort to where rsp is directed + * + * This routine issues an EDC ACC RSP to the F-Port Controller to communicate + * this N_Port's support of hardware signals in its Congestion + * Capabilities Descriptor. + * + * Return code + * 0 - Successfully issued edc rsp command + * 1 - Failed to issue edc rsp command + **/ +static int +lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + struct fc_els_edc_resp *edc_rsp; + struct fc_tlv_desc *tlv; + struct lpfc_iocbq *elsiocb; + IOCB_t *icmd, *cmd; + union lpfc_wqe128 *wqe; + u32 cgn_desc_size, lft_desc_size; + u16 cmdsize; + uint8_t *pcmd; + int rc; + + cmdsize = sizeof(struct fc_els_edc_resp); + cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc); + lft_desc_size = (lpfc_link_is_lds_capable(phba)) ? + sizeof(struct fc_diag_lnkflt_desc) : 0; + cmdsize += cgn_desc_size + lft_desc_size; + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry, + ndlp, ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, cmdiocb)); + } else { + icmd = &elsiocb->iocb; + cmd = &cmdiocb->iocb; + icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */ + icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id; + } + + pcmd = elsiocb->cmd_dmabuf->virt; + memset(pcmd, 0, cmdsize); + + edc_rsp = (struct fc_els_edc_resp *)pcmd; + edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC; + edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) + + cgn_desc_size + lft_desc_size); + edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO); + edc_rsp->lsri.desc_len = cpu_to_be32( + FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc)); + edc_rsp->lsri.rqst_w0.cmd = ELS_EDC; + tlv = edc_rsp->desc; + lpfc_format_edc_cgn_desc(phba, tlv); + tlv = fc_tlv_next_desc(tlv); + if (lft_desc_size) + lpfc_format_edc_lft_desc(phba, tlv); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue EDC ACC: did:x%x flg:x%x refcnt %d", + ndlp->nlp_DID, ndlp->nlp_flag, + kref_read(&ndlp->kref)); + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + /* Xmit ELS ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, " + "XRI: x%x, DID: x%x, nlp_flag: x%x nlp_state: x%x " + "RPI: x%x, fc_flag x%x\n", + rc, elsiocb->iotag, elsiocb->sli4_xritag, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi, vport->fc_flag); + + return 0; +} + +/** + * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd + * @vport: pointer to a virtual N_Port data structure. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine prepares and issues an Accept (ACC) response to Address + * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB + * and invokes the lpfc_sli_issue_iocb() routine to send out the command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the ADISC Accept response + * ELS IOCB command. + * + * Return code + * 0 - Successfully issued acc adisc response + * 1 - Failed to issue adisc acc response + **/ +int +lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + ADISC *ap; + IOCB_t *icmd, *oldcmd; + union lpfc_wqe128 *wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + u32 ulp_context; + + cmdsize = sizeof(uint32_t) + sizeof(ADISC); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* XRI / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); + ulp_context = get_job_ulpcontext(phba, elsiocb); + /* oxid */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + ulp_context = elsiocb->iocb.ulpContext; + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + /* Xmit ADISC ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0130 Xmit ADISC ACC response iotag x%x xri: " + "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); + + ap = (ADISC *) (pcmd); + ap->hardAL_PA = phba->fc_pref_ALPA; + memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name)); + memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); + ap->DID = be32_to_cpu(vport->fc_myDID); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC ADISC: did:x%x flg:x%x refcnt %d", + ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); + + phba->fc_stat.elsXmitACC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd + * @vport: pointer to a virtual N_Port data structure. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine prepares and issues an Accept (ACC) response to Process + * Login (PRLI) ELS command. It simply prepares the payload of the IOCB + * and invokes the lpfc_sli_issue_iocb() routine to send out the command. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the PRLI Accept response + * ELS IOCB command. + * + * Return code + * 0 - Successfully issued acc prli response + * 1 - Failed to issue acc prli response + **/ +int +lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + PRLI *npr; + struct lpfc_nvme_prli *npr_nvme; + lpfc_vpd_t *vpd; + IOCB_t *icmd; + IOCB_t *oldcmd; + union lpfc_wqe128 *wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + uint32_t prli_fc4_req, *req_payload; + struct lpfc_dmabuf *req_buf; + int rc; + u32 elsrspcmd, ulp_context; + + /* Need the incoming PRLI payload to determine if the ACC is for an + * FC4 or NVME PRLI type. The PRLI type is at word 1. + */ + req_buf = oldiocb->cmd_dmabuf; + req_payload = (((uint32_t *)req_buf->virt) + 1); + + /* PRLI type payload is at byte 3 for FCP or NVME. */ + prli_fc4_req = be32_to_cpu(*req_payload); + prli_fc4_req = (prli_fc4_req >> 24) & 0xff; + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n", + prli_fc4_req, *((uint32_t *)req_payload)); + + if (prli_fc4_req == PRLI_FCP_TYPE) { + cmdsize = sizeof(uint32_t) + sizeof(PRLI); + elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)); + } else if (prli_fc4_req == PRLI_NVME_TYPE) { + cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli); + elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK)); + } else { + return 1; + } + + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, elsrspcmd); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ + ulp_context = get_job_ulpcontext(phba, elsiocb); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + ulp_context = elsiocb->iocb.ulpContext; + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + /* Xmit PRLI ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0131 Xmit PRLI ACC response tag x%x xri x%x, " + "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + memset(pcmd, 0, cmdsize); + + *((uint32_t *)(pcmd)) = elsrspcmd; + pcmd += sizeof(uint32_t); + + /* For PRLI, remainder of payload is PRLI parameter page */ + vpd = &phba->vpd; + + if (prli_fc4_req == PRLI_FCP_TYPE) { + /* + * If the remote port is a target and our firmware version + * is 3.20 or later, set the following bits for FC-TAPE + * support. + */ + npr = (PRLI *) pcmd; + if ((ndlp->nlp_type & NLP_FCP_TARGET) && + (vpd->rev.feaLevelHigh >= 0x02)) { + npr->ConfmComplAllowed = 1; + npr->Retry = 1; + npr->TaskRetryIdReq = 1; + } + npr->acceptRspCode = PRLI_REQ_EXECUTED; + npr->estabImagePair = 1; + npr->readXferRdyDis = 1; + npr->ConfmComplAllowed = 1; + npr->prliType = PRLI_FCP_TYPE; + npr->initiatorFunc = 1; + } else if (prli_fc4_req == PRLI_NVME_TYPE) { + /* Respond with an NVME PRLI Type */ + npr_nvme = (struct lpfc_nvme_prli *) pcmd; + bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE); + bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */ + bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED); + if (phba->nvmet_support) { + bf_set(prli_tgt, npr_nvme, 1); + bf_set(prli_disc, npr_nvme, 1); + if (phba->cfg_nvme_enable_fb) { + bf_set(prli_fba, npr_nvme, 1); + + /* TBD. Target mode needs to post buffers + * that support the configured first burst + * byte size. + */ + bf_set(prli_fb_sz, npr_nvme, + phba->cfg_nvmet_fb_size); + } + } else { + bf_set(prli_init, npr_nvme, 1); + } + + lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, + "6015 NVME issue PRLI ACC word1 x%08x " + "word4 x%08x word5 x%08x flag x%x, " + "fcp_info x%x nlp_type x%x\n", + npr_nvme->word1, npr_nvme->word4, + npr_nvme->word5, ndlp->nlp_flag, + ndlp->nlp_fcp_info, ndlp->nlp_type); + npr_nvme->word1 = cpu_to_be32(npr_nvme->word1); + npr_nvme->word4 = cpu_to_be32(npr_nvme->word4); + npr_nvme->word5 = cpu_to_be32(npr_nvme->word5); + } else + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n", + prli_fc4_req, ndlp->nlp_fc4_type, + ndlp->nlp_DID); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC PRLI: did:x%x flg:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); + + phba->fc_stat.elsXmitACC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command + * @vport: pointer to a virtual N_Port data structure. + * @format: rnid command format. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine issues a Request Node Identification Data (RNID) Accept + * (ACC) response. It constructs the RNID ACC response command according to + * the proper @format and then calls the lpfc_sli_issue_iocb() routine to + * issue the response. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function. + * + * Return code + * 0 - Successfully issued acc rnid response + * 1 - Failed to issue acc rnid response + **/ +static int +lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format, + struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + RNID *rn; + IOCB_t *icmd, *oldcmd; + union lpfc_wqe128 *wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + u32 ulp_context; + + cmdsize = sizeof(uint32_t) + sizeof(uint32_t) + + (2 * sizeof(struct lpfc_name)); + if (format) + cmdsize += sizeof(RNID_TOP_DISC); + + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ + ulp_context = get_job_ulpcontext(phba, elsiocb); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + ulp_context = elsiocb->iocb.ulpContext; + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + /* Xmit RNID ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0132 Xmit RNID ACC response tag x%x xri x%x\n", + elsiocb->iotag, ulp_context); + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); + + memset(pcmd, 0, sizeof(RNID)); + rn = (RNID *) (pcmd); + rn->Format = format; + rn->CommonLen = (2 * sizeof(struct lpfc_name)); + memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name)); + memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name)); + switch (format) { + case 0: + rn->SpecificLen = 0; + break; + case RNID_TOPOLOGY_DISC: + rn->SpecificLen = sizeof(RNID_TOP_DISC); + memcpy(&rn->un.topologyDisc.portName, + &vport->fc_portname, sizeof(struct lpfc_name)); + rn->un.topologyDisc.unitType = RNID_HBA; + rn->un.topologyDisc.physPort = 0; + rn->un.topologyDisc.attachedNodes = 0; + break; + default: + rn->CommonLen = 0; + rn->SpecificLen = 0; + break; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC RNID: did:x%x flg:x%x refcnt %d", + ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); + + phba->fc_stat.elsXmitACC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_els_clear_rrq - Clear the rq that this rrq describes. + * @vport: pointer to a virtual N_Port data structure. + * @iocb: pointer to the lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * Return + **/ +static void +lpfc_els_clear_rrq(struct lpfc_vport *vport, + struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + uint8_t *pcmd; + struct RRQ *rrq; + uint16_t rxid; + uint16_t xri; + struct lpfc_node_rrq *prrq; + + + pcmd = (uint8_t *)iocb->cmd_dmabuf->virt; + pcmd += sizeof(uint32_t); + rrq = (struct RRQ *)pcmd; + rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg); + rxid = bf_get(rrq_rxid, rrq); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x" + " x%x x%x\n", + be32_to_cpu(bf_get(rrq_did, rrq)), + bf_get(rrq_oxid, rrq), + rxid, + get_wqe_reqtag(iocb), + get_job_ulpcontext(phba, iocb)); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Clear RRQ: did:x%x flg:x%x exchg:x%.08x", + ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg); + if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq))) + xri = bf_get(rrq_oxid, rrq); + else + xri = rxid; + prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID); + if (prrq) + lpfc_clr_rrq_active(phba, xri, prrq); + return; +} + +/** + * lpfc_els_rsp_echo_acc - Issue echo acc response + * @vport: pointer to a virtual N_Port data structure. + * @data: pointer to echo data to return in the accept. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * Return code + * 0 - Successfully issued acc echo response + * 1 - Failed to issue acc echo response + **/ +static int +lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data, + struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + IOCB_t *icmd, *oldcmd; + union lpfc_wqe128 *wqe; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int rc; + u32 ulp_context; + + if (phba->sli_rev == LPFC_SLI_REV4) + cmdsize = oldiocb->wcqe_cmpl.total_data_placed; + else + cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len; + + /* The accumulated length can exceed the BPL_SIZE. For + * now, use this as the limit + */ + if (cmdsize > LPFC_BPL_SIZE) + cmdsize = LPFC_BPL_SIZE; + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + return 1; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */ + ulp_context = get_job_ulpcontext(phba, elsiocb); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + oldcmd = &oldiocb->iocb; + icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */ + ulp_context = elsiocb->iocb.ulpContext; + icmd->unsli3.rcvsli3.ox_id = + oldcmd->unsli3.rcvsli3.ox_id; + } + + /* Xmit ECHO ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2876 Xmit ECHO ACC response tag x%x xri x%x\n", + elsiocb->iotag, ulp_context); + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); + memcpy(pcmd, data, cmdsize - sizeof(uint32_t)); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP, + "Issue ACC ECHO: did:x%x flg:x%x refcnt %d", + ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref)); + + phba->fc_stat.elsXmitACC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues Address Discover (ADISC) ELS commands to those + * N_Ports which are in node port recovery state and ADISC has not been issued + * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the + * lpfc_issue_els_adisc() routine, the per @vport number of discover count + * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a + * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will + * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC + * IOCBs quit for later pick up. On the other hand, after walking through + * all the ndlps with the @vport and there is none ADISC IOCB issued, the + * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is + * no more ADISC need to be sent. + * + * Return code + * The number of N_Ports with adisc issued. + **/ +int +lpfc_els_disc_adisc(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp, *next_ndlp; + int sentadisc = 0; + + /* go thru NPR nodes and issue any remaining ELS ADISCs */ + list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { + + if (ndlp->nlp_state != NLP_STE_NPR_NODE || + !(ndlp->nlp_flag & NLP_NPR_ADISC)) + continue; + + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_NPR_ADISC; + spin_unlock_irq(&ndlp->lock); + + if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { + /* This node was marked for ADISC but was not picked + * for discovery. This is possible if the node was + * missing in gidft response. + * + * At time of marking node for ADISC, we skipped unreg + * from backend + */ + lpfc_nlp_unreg_node(vport, ndlp); + lpfc_unreg_rpi(vport, ndlp); + continue; + } + + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE); + lpfc_issue_els_adisc(vport, ndlp, 0); + sentadisc++; + vport->num_disc_nodes++; + if (vport->num_disc_nodes >= + vport->cfg_discovery_threads) { + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_NLP_MORE; + spin_unlock_irq(shost->host_lock); + break; + } + + } + if (sentadisc == 0) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NLP_MORE; + spin_unlock_irq(shost->host_lock); + } + return sentadisc; +} + +/** + * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports + * which are in node port recovery state, with a @vport. Each time an ELS + * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine, + * the per @vport number of discover count (num_disc_nodes) shall be + * incremented. If the num_disc_nodes reaches a pre-configured threshold + * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE + * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for + * later pick up. On the other hand, after walking through all the ndlps with + * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag + * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC + * PLOGI need to be sent. + * + * Return code + * The number of N_Ports with plogi issued. + **/ +int +lpfc_els_disc_plogi(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp, *next_ndlp; + int sentplogi = 0; + + /* go thru NPR nodes and issue any remaining ELS PLOGIs */ + list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { + if (ndlp->nlp_state == NLP_STE_NPR_NODE && + (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 && + (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 && + (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); + sentplogi++; + vport->num_disc_nodes++; + if (vport->num_disc_nodes >= + vport->cfg_discovery_threads) { + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_NLP_MORE; + spin_unlock_irq(shost->host_lock); + break; + } + } + } + + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "6452 Discover PLOGI %d flag x%x\n", + sentplogi, vport->fc_flag); + + if (sentplogi) { + lpfc_set_disctmo(vport); + } + else { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NLP_MORE; + spin_unlock_irq(shost->host_lock); + } + return sentplogi; +} + +static uint32_t +lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc, + uint32_t word0) +{ + + desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG); + desc->payload.els_req = word0; + desc->length = cpu_to_be32(sizeof(desc->payload)); + + return sizeof(struct fc_rdp_link_service_desc); +} + +static uint32_t +lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc, + uint8_t *page_a0, uint8_t *page_a2) +{ + uint16_t wavelength; + uint16_t temperature; + uint16_t rx_power; + uint16_t tx_bias; + uint16_t tx_power; + uint16_t vcc; + uint16_t flag = 0; + struct sff_trasnceiver_codes_byte4 *trasn_code_byte4; + struct sff_trasnceiver_codes_byte5 *trasn_code_byte5; + + desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG); + + trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *) + &page_a0[SSF_TRANSCEIVER_CODE_B4]; + trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *) + &page_a0[SSF_TRANSCEIVER_CODE_B5]; + + if ((trasn_code_byte4->fc_sw_laser) || + (trasn_code_byte5->fc_sw_laser_sl) || + (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */ + flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT); + } else if (trasn_code_byte4->fc_lw_laser) { + wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) | + page_a0[SSF_WAVELENGTH_B0]; + if (wavelength == SFP_WAVELENGTH_LC1310) + flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT; + if (wavelength == SFP_WAVELENGTH_LL1550) + flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT; + } + /* check if its SFP+ */ + flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ? + SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN) + << SFP_FLAG_CT_SHIFT; + + /* check if its OPTICAL */ + flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ? + SFP_FLAG_IS_OPTICAL_PORT : 0) + << SFP_FLAG_IS_OPTICAL_SHIFT; + + temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 | + page_a2[SFF_TEMPERATURE_B0]); + vcc = (page_a2[SFF_VCC_B1] << 8 | + page_a2[SFF_VCC_B0]); + tx_power = (page_a2[SFF_TXPOWER_B1] << 8 | + page_a2[SFF_TXPOWER_B0]); + tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 | + page_a2[SFF_TX_BIAS_CURRENT_B0]); + rx_power = (page_a2[SFF_RXPOWER_B1] << 8 | + page_a2[SFF_RXPOWER_B0]); + desc->sfp_info.temperature = cpu_to_be16(temperature); + desc->sfp_info.rx_power = cpu_to_be16(rx_power); + desc->sfp_info.tx_bias = cpu_to_be16(tx_bias); + desc->sfp_info.tx_power = cpu_to_be16(tx_power); + desc->sfp_info.vcc = cpu_to_be16(vcc); + + desc->sfp_info.flags = cpu_to_be16(flag); + desc->length = cpu_to_be32(sizeof(desc->sfp_info)); + + return sizeof(struct fc_rdp_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc, + READ_LNK_VAR *stat) +{ + uint32_t type; + + desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG); + + type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT; + + desc->info.port_type = cpu_to_be32(type); + + desc->info.link_status.link_failure_cnt = + cpu_to_be32(stat->linkFailureCnt); + desc->info.link_status.loss_of_synch_cnt = + cpu_to_be32(stat->lossSyncCnt); + desc->info.link_status.loss_of_signal_cnt = + cpu_to_be32(stat->lossSignalCnt); + desc->info.link_status.primitive_seq_proto_err = + cpu_to_be32(stat->primSeqErrCnt); + desc->info.link_status.invalid_trans_word = + cpu_to_be32(stat->invalidXmitWord); + desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt); + + desc->length = cpu_to_be32(sizeof(desc->info)); + + return sizeof(struct fc_rdp_link_error_status_desc); +} + +static uint32_t +lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat, + struct lpfc_vport *vport) +{ + uint32_t bbCredit; + + desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG); + + bbCredit = vport->fc_sparam.cmn.bbCreditLsb | + (vport->fc_sparam.cmn.bbCreditMsb << 8); + desc->bbc_info.port_bbc = cpu_to_be32(bbCredit); + if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) { + bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb | + (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8); + desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit); + } else { + desc->bbc_info.attached_port_bbc = 0; + } + + desc->bbc_info.rtt = 0; + desc->length = cpu_to_be32(sizeof(desc->bbc_info)); + + return sizeof(struct fc_rdp_bbc_desc); +} + +static uint32_t +lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba, + struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2) +{ + uint32_t flags = 0; + + desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); + + desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM]; + desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM]; + desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING]; + desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING]; + + if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) + flags |= RDP_OET_HIGH_ALARM; + if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE) + flags |= RDP_OET_LOW_ALARM; + if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE) + flags |= RDP_OET_HIGH_WARNING; + if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE) + flags |= RDP_OET_LOW_WARNING; + + flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT); + desc->oed_info.function_flags = cpu_to_be32(flags); + desc->length = cpu_to_be32(sizeof(desc->oed_info)); + return sizeof(struct fc_rdp_oed_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba, + struct fc_rdp_oed_sfp_desc *desc, + uint8_t *page_a2) +{ + uint32_t flags = 0; + + desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); + + desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM]; + desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM]; + desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING]; + desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING]; + + if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE) + flags |= RDP_OET_HIGH_ALARM; + if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE) + flags |= RDP_OET_LOW_ALARM; + if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE) + flags |= RDP_OET_HIGH_WARNING; + if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE) + flags |= RDP_OET_LOW_WARNING; + + flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT); + desc->oed_info.function_flags = cpu_to_be32(flags); + desc->length = cpu_to_be32(sizeof(desc->oed_info)); + return sizeof(struct fc_rdp_oed_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba, + struct fc_rdp_oed_sfp_desc *desc, + uint8_t *page_a2) +{ + uint32_t flags = 0; + + desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); + + desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM]; + desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM]; + desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING]; + desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING]; + + if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS) + flags |= RDP_OET_HIGH_ALARM; + if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS) + flags |= RDP_OET_LOW_ALARM; + if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS) + flags |= RDP_OET_HIGH_WARNING; + if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS) + flags |= RDP_OET_LOW_WARNING; + + flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT); + desc->oed_info.function_flags = cpu_to_be32(flags); + desc->length = cpu_to_be32(sizeof(desc->oed_info)); + return sizeof(struct fc_rdp_oed_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba, + struct fc_rdp_oed_sfp_desc *desc, + uint8_t *page_a2) +{ + uint32_t flags = 0; + + desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); + + desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM]; + desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM]; + desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING]; + desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING]; + + if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER) + flags |= RDP_OET_HIGH_ALARM; + if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER) + flags |= RDP_OET_LOW_ALARM; + if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER) + flags |= RDP_OET_HIGH_WARNING; + if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER) + flags |= RDP_OET_LOW_WARNING; + + flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT); + desc->oed_info.function_flags = cpu_to_be32(flags); + desc->length = cpu_to_be32(sizeof(desc->oed_info)); + return sizeof(struct fc_rdp_oed_sfp_desc); +} + + +static uint32_t +lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba, + struct fc_rdp_oed_sfp_desc *desc, + uint8_t *page_a2) +{ + uint32_t flags = 0; + + desc->tag = cpu_to_be32(RDP_OED_DESC_TAG); + + desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM]; + desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM]; + desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING]; + desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING]; + + if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER) + flags |= RDP_OET_HIGH_ALARM; + if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER) + flags |= RDP_OET_LOW_ALARM; + if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER) + flags |= RDP_OET_HIGH_WARNING; + if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER) + flags |= RDP_OET_LOW_WARNING; + + flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT); + desc->oed_info.function_flags = cpu_to_be32(flags); + desc->length = cpu_to_be32(sizeof(desc->oed_info)); + return sizeof(struct fc_rdp_oed_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc, + uint8_t *page_a0, struct lpfc_vport *vport) +{ + desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG); + memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16); + memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16); + memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16); + memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4); + memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8); + desc->length = cpu_to_be32(sizeof(desc->opd_info)); + return sizeof(struct fc_rdp_opd_sfp_desc); +} + +static uint32_t +lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat) +{ + if (bf_get(lpfc_read_link_stat_gec2, stat) == 0) + return 0; + desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG); + + desc->info.CorrectedBlocks = + cpu_to_be32(stat->fecCorrBlkCount); + desc->info.UncorrectableBlocks = + cpu_to_be32(stat->fecUncorrBlkCount); + + desc->length = cpu_to_be32(sizeof(desc->info)); + + return sizeof(struct fc_fec_rdp_desc); +} + +static uint32_t +lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba) +{ + uint16_t rdp_cap = 0; + uint16_t rdp_speed; + + desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG); + + switch (phba->fc_linkspeed) { + case LPFC_LINK_SPEED_1GHZ: + rdp_speed = RDP_PS_1GB; + break; + case LPFC_LINK_SPEED_2GHZ: + rdp_speed = RDP_PS_2GB; + break; + case LPFC_LINK_SPEED_4GHZ: + rdp_speed = RDP_PS_4GB; + break; + case LPFC_LINK_SPEED_8GHZ: + rdp_speed = RDP_PS_8GB; + break; + case LPFC_LINK_SPEED_10GHZ: + rdp_speed = RDP_PS_10GB; + break; + case LPFC_LINK_SPEED_16GHZ: + rdp_speed = RDP_PS_16GB; + break; + case LPFC_LINK_SPEED_32GHZ: + rdp_speed = RDP_PS_32GB; + break; + case LPFC_LINK_SPEED_64GHZ: + rdp_speed = RDP_PS_64GB; + break; + case LPFC_LINK_SPEED_128GHZ: + rdp_speed = RDP_PS_128GB; + break; + case LPFC_LINK_SPEED_256GHZ: + rdp_speed = RDP_PS_256GB; + break; + default: + rdp_speed = RDP_PS_UNKNOWN; + break; + } + + desc->info.port_speed.speed = cpu_to_be16(rdp_speed); + + if (phba->lmt & LMT_256Gb) + rdp_cap |= RDP_PS_256GB; + if (phba->lmt & LMT_128Gb) + rdp_cap |= RDP_PS_128GB; + if (phba->lmt & LMT_64Gb) + rdp_cap |= RDP_PS_64GB; + if (phba->lmt & LMT_32Gb) + rdp_cap |= RDP_PS_32GB; + if (phba->lmt & LMT_16Gb) + rdp_cap |= RDP_PS_16GB; + if (phba->lmt & LMT_10Gb) + rdp_cap |= RDP_PS_10GB; + if (phba->lmt & LMT_8Gb) + rdp_cap |= RDP_PS_8GB; + if (phba->lmt & LMT_4Gb) + rdp_cap |= RDP_PS_4GB; + if (phba->lmt & LMT_2Gb) + rdp_cap |= RDP_PS_2GB; + if (phba->lmt & LMT_1Gb) + rdp_cap |= RDP_PS_1GB; + + if (rdp_cap == 0) + rdp_cap = RDP_CAP_UNKNOWN; + if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO) + rdp_cap |= RDP_CAP_USER_CONFIGURED; + + desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap); + desc->length = cpu_to_be32(sizeof(desc->info)); + return sizeof(struct fc_rdp_port_speed_desc); +} + +static uint32_t +lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc, + struct lpfc_vport *vport) +{ + + desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); + + memcpy(desc->port_names.wwnn, &vport->fc_nodename, + sizeof(desc->port_names.wwnn)); + + memcpy(desc->port_names.wwpn, &vport->fc_portname, + sizeof(desc->port_names.wwpn)); + + desc->length = cpu_to_be32(sizeof(desc->port_names)); + return sizeof(struct fc_rdp_port_name_desc); +} + +static uint32_t +lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc, + struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) +{ + + desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG); + if (vport->fc_flag & FC_FABRIC) { + memcpy(desc->port_names.wwnn, &vport->fabric_nodename, + sizeof(desc->port_names.wwnn)); + + memcpy(desc->port_names.wwpn, &vport->fabric_portname, + sizeof(desc->port_names.wwpn)); + } else { /* Point to Point */ + memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename, + sizeof(desc->port_names.wwnn)); + + memcpy(desc->port_names.wwpn, &ndlp->nlp_portname, + sizeof(desc->port_names.wwpn)); + } + + desc->length = cpu_to_be32(sizeof(desc->port_names)); + return sizeof(struct fc_rdp_port_name_desc); +} + +static void +lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context, + int status) +{ + struct lpfc_nodelist *ndlp = rdp_context->ndlp; + struct lpfc_vport *vport = ndlp->vport; + struct lpfc_iocbq *elsiocb; + struct ulp_bde64 *bpl; + IOCB_t *icmd; + union lpfc_wqe128 *wqe; + uint8_t *pcmd; + struct ls_rjt *stat; + struct fc_rdp_res_frame *rdp_res; + uint32_t cmdsize, len; + uint16_t *flag_ptr; + int rc; + u32 ulp_context; + + if (status != SUCCESS) + goto error; + + /* This will change once we know the true size of the RDP payload */ + cmdsize = sizeof(struct fc_rdp_res_frame); + + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, + lpfc_max_els_tries, rdp_context->ndlp, + rdp_context->ndlp->nlp_DID, ELS_CMD_ACC); + if (!elsiocb) + goto free_rdp_context; + + ulp_context = get_job_ulpcontext(phba, elsiocb); + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* ox-id of the frame */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + rdp_context->ox_id); + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + rdp_context->rx_id); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = rdp_context->rx_id; + icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; + } + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2171 Xmit RDP response tag x%x xri x%x, " + "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt; + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + memset(pcmd, 0, sizeof(struct fc_rdp_res_frame)); + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + + /* Update Alarm and Warning */ + flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS); + phba->sfp_alarm |= *flag_ptr; + flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS); + phba->sfp_warning |= *flag_ptr; + + /* For RDP payload */ + len = 8; + len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *) + (len + pcmd), ELS_CMD_RDP); + + len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd), + rdp_context->page_a0, rdp_context->page_a2); + len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd), + phba); + len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *) + (len + pcmd), &rdp_context->link_stat); + len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *) + (len + pcmd), vport); + len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *) + (len + pcmd), vport, ndlp); + len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd), + &rdp_context->link_stat); + len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd), + &rdp_context->link_stat, vport); + len += lpfc_rdp_res_oed_temp_desc(phba, + (struct fc_rdp_oed_sfp_desc *)(len + pcmd), + rdp_context->page_a2); + len += lpfc_rdp_res_oed_voltage_desc(phba, + (struct fc_rdp_oed_sfp_desc *)(len + pcmd), + rdp_context->page_a2); + len += lpfc_rdp_res_oed_txbias_desc(phba, + (struct fc_rdp_oed_sfp_desc *)(len + pcmd), + rdp_context->page_a2); + len += lpfc_rdp_res_oed_txpower_desc(phba, + (struct fc_rdp_oed_sfp_desc *)(len + pcmd), + rdp_context->page_a2); + len += lpfc_rdp_res_oed_rxpower_desc(phba, + (struct fc_rdp_oed_sfp_desc *)(len + pcmd), + rdp_context->page_a2); + len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd), + rdp_context->page_a0, vport); + + rdp_res->length = cpu_to_be32(len - 8); + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + + /* Now that we know the true size of the payload, update the BPL */ + bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt; + bpl->tus.f.bdeSize = len; + bpl->tus.f.bdeFlags = 0; + bpl->tus.w = le32_to_cpu(bpl->tus.w); + + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto free_rdp_context; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } + + goto free_rdp_context; + +error: + cmdsize = 2 * sizeof(uint32_t); + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries, + ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT); + if (!elsiocb) + goto free_rdp_context; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* ox-id of the frame */ + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + rdp_context->ox_id); + bf_set(wqe_ctxt_tag, + &wqe->xmit_els_rsp.wqe_com, + rdp_context->rx_id); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = rdp_context->rx_id; + icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT; + stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); + stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + + phba->fc_stat.elsXmitLSRJT++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto free_rdp_context; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } + +free_rdp_context: + /* This reference put is for the original unsolicited RDP. If the + * prep failed, there is no reference to remove. + */ + lpfc_nlp_put(ndlp); + kfree(rdp_context); +} + +static int +lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context) +{ + LPFC_MBOXQ_t *mbox = NULL; + int rc; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS, + "7105 failed to allocate mailbox memory"); + return 1; + } + + if (lpfc_sli4_dump_page_a0(phba, mbox)) + goto rdp_fail; + mbox->vport = rdp_context->ndlp->vport; + mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0; + mbox->ctx_ndlp = (struct lpfc_rdp_context *)rdp_context; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED); + return 1; + } + + return 0; + +rdp_fail: + mempool_free(mbox, phba->mbox_mem_pool); + return 1; +} + +/* + * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS. + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes an unsolicited RDP(Read Diagnostic Parameters) + * IOCB. First, the payload of the unsolicited RDP is checked. + * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3 + * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2, + * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl + * gather all data and send RDP response. + * + * Return code + * 0 - Sent the acc response + * 1 - Sent the reject response. + */ +static int +lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_dmabuf *pcmd; + uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE; + struct fc_rdp_req_frame *rdp_req; + struct lpfc_rdp_context *rdp_context; + union lpfc_wqe128 *cmd = NULL; + struct ls_rjt stat; + + if (phba->sli_rev < LPFC_SLI_REV4 || + bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < + LPFC_SLI_INTF_IF_TYPE_2) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_expl = LSEXP_REQ_UNSUPPORTED; + goto error; + } + + if (phba->sli_rev < LPFC_SLI_REV4 || (phba->hba_flag & HBA_FCOE_MODE)) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_expl = LSEXP_REQ_UNSUPPORTED; + goto error; + } + + pcmd = cmdiocb->cmd_dmabuf; + rdp_req = (struct fc_rdp_req_frame *) pcmd->virt; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2422 ELS RDP Request " + "dec len %d tag x%x port_id %d len %d\n", + be32_to_cpu(rdp_req->rdp_des_length), + be32_to_cpu(rdp_req->nport_id_desc.tag), + be32_to_cpu(rdp_req->nport_id_desc.nport_id), + be32_to_cpu(rdp_req->nport_id_desc.length)); + + if (sizeof(struct fc_rdp_nport_desc) != + be32_to_cpu(rdp_req->rdp_des_length)) + goto rjt_logerr; + if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag)) + goto rjt_logerr; + if (RDP_NPORT_ID_SIZE != + be32_to_cpu(rdp_req->nport_id_desc.length)) + goto rjt_logerr; + rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL); + if (!rdp_context) { + rjt_err = LSRJT_UNABLE_TPC; + goto error; + } + + cmd = &cmdiocb->wqe; + rdp_context->ndlp = lpfc_nlp_get(ndlp); + if (!rdp_context->ndlp) { + kfree(rdp_context); + rjt_err = LSRJT_UNABLE_TPC; + goto error; + } + rdp_context->ox_id = bf_get(wqe_rcvoxid, + &cmd->xmit_els_rsp.wqe_com); + rdp_context->rx_id = bf_get(wqe_ctxt_tag, + &cmd->xmit_els_rsp.wqe_com); + rdp_context->cmpl = lpfc_els_rdp_cmpl; + if (lpfc_get_rdp_info(phba, rdp_context)) { + lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS, + "2423 Unable to send mailbox"); + kfree(rdp_context); + rjt_err = LSRJT_UNABLE_TPC; + lpfc_nlp_put(ndlp); + goto error; + } + + return 0; + +rjt_logerr: + rjt_err = LSRJT_LOGICAL_ERR; + +error: + memset(&stat, 0, sizeof(stat)); + stat.un.b.lsRjtRsnCode = rjt_err; + stat.un.b.lsRjtRsnCodeExp = rjt_expl; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); + return 1; +} + + +static void +lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + MAILBOX_t *mb; + IOCB_t *icmd; + union lpfc_wqe128 *wqe; + uint8_t *pcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_nodelist *ndlp; + struct ls_rjt *stat; + union lpfc_sli4_cfg_shdr *shdr; + struct lpfc_lcb_context *lcb_context; + struct fc_lcb_res_frame *lcb_res; + uint32_t cmdsize, shdr_status, shdr_add_status; + int rc; + + mb = &pmb->u.mb; + lcb_context = (struct lpfc_lcb_context *)pmb->ctx_ndlp; + ndlp = lcb_context->ndlp; + pmb->ctx_ndlp = NULL; + pmb->ctx_buf = NULL; + + shdr = (union lpfc_sli4_cfg_shdr *) + &pmb->u.mqe.un.beacon_config.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX, + "0194 SET_BEACON_CONFIG mailbox " + "completed with status x%x add_status x%x," + " mbx status x%x\n", + shdr_status, shdr_add_status, mb->mbxStatus); + + if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status || + (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) || + (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) { + mempool_free(pmb, phba->mbox_mem_pool); + goto error; + } + + mempool_free(pmb, phba->mbox_mem_pool); + cmdsize = sizeof(struct fc_lcb_res_frame); + elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, + lpfc_max_els_tries, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + + /* Decrement the ndlp reference count from previous mbox command */ + lpfc_nlp_put(ndlp); + + if (!elsiocb) + goto free_lcb_context; + + lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt; + + memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame)); + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + lcb_context->ox_id); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = lcb_context->rx_id; + icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *)(pcmd)) = ELS_CMD_ACC; + lcb_res->lcb_sub_command = lcb_context->sub_command; + lcb_res->lcb_type = lcb_context->type; + lcb_res->capability = lcb_context->capability; + lcb_res->lcb_frequency = lcb_context->frequency; + lcb_res->lcb_duration = lcb_context->duration; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + phba->fc_stat.elsXmitACC++; + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto out; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } + out: + kfree(lcb_context); + return; + +error: + cmdsize = sizeof(struct fc_lcb_res_frame); + elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, + lpfc_max_els_tries, ndlp, + ndlp->nlp_DID, ELS_CMD_LS_RJT); + lpfc_nlp_put(ndlp); + if (!elsiocb) + goto free_lcb_context; + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + lcb_context->ox_id); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = lcb_context->rx_id; + icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT; + stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t)); + stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + + if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) + stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS; + + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + phba->fc_stat.elsXmitLSRJT++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto free_lcb_context; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } +free_lcb_context: + kfree(lcb_context); +} + +static int +lpfc_sli4_set_beacon(struct lpfc_vport *vport, + struct lpfc_lcb_context *lcb_context, + uint32_t beacon_state) +{ + struct lpfc_hba *phba = vport->phba; + union lpfc_sli4_cfg_shdr *cfg_shdr; + LPFC_MBOXQ_t *mbox = NULL; + uint32_t len; + int rc; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return 1; + + cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr; + len = sizeof(struct lpfc_mbx_set_beacon_config) - + sizeof(struct lpfc_sli4_cfg_mhdr); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len, + LPFC_SLI4_MBX_EMBED); + mbox->ctx_ndlp = (void *)lcb_context; + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_els_lcb_rsp; + bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config, + phba->sli4_hba.physical_port); + bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config, + beacon_state); + mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */ + + /* + * Check bv1s bit before issuing the mailbox + * if bv1s == 1, LCB V1 supported + * else, LCB V0 supported + */ + + if (phba->sli4_hba.pc_sli4_params.bv1s) { + /* COMMON_SET_BEACON_CONFIG_V1 */ + cfg_shdr->request.word9 = BEACON_VERSION_V1; + lcb_context->capability |= LCB_CAPABILITY_DURATION; + bf_set(lpfc_mbx_set_beacon_port_type, + &mbox->u.mqe.un.beacon_config, 0); + bf_set(lpfc_mbx_set_beacon_duration_v1, + &mbox->u.mqe.un.beacon_config, + be16_to_cpu(lcb_context->duration)); + } else { + /* COMMON_SET_BEACON_CONFIG_V0 */ + if (be16_to_cpu(lcb_context->duration) != 0) { + mempool_free(mbox, phba->mbox_mem_pool); + return 1; + } + cfg_shdr->request.word9 = BEACON_VERSION_V0; + lcb_context->capability &= ~(LCB_CAPABILITY_DURATION); + bf_set(lpfc_mbx_set_beacon_state, + &mbox->u.mqe.un.beacon_config, beacon_state); + bf_set(lpfc_mbx_set_beacon_port_type, + &mbox->u.mqe.un.beacon_config, 1); + bf_set(lpfc_mbx_set_beacon_duration, + &mbox->u.mqe.un.beacon_config, + be16_to_cpu(lcb_context->duration)); + } + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + return 1; + } + + return 0; +} + + +/** + * lpfc_els_rcv_lcb - Process an unsolicited LCB + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB. + * First, the payload of the unsolicited LCB is checked. + * Then based on Subcommand beacon will either turn on or off. + * + * Return code + * 0 - Sent the acc response + * 1 - Sent the reject response. + **/ +static int +lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_dmabuf *pcmd; + uint8_t *lp; + struct fc_lcb_request_frame *beacon; + struct lpfc_lcb_context *lcb_context; + u8 state, rjt_err = 0; + struct ls_rjt stat; + + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint8_t *)pcmd->virt; + beacon = (struct fc_lcb_request_frame *)pcmd->virt; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0192 ELS LCB Data x%x x%x x%x x%x sub x%x " + "type x%x frequency %x duration x%x\n", + lp[0], lp[1], lp[2], + beacon->lcb_command, + beacon->lcb_sub_command, + beacon->lcb_type, + beacon->lcb_frequency, + be16_to_cpu(beacon->lcb_duration)); + + if (beacon->lcb_sub_command != LPFC_LCB_ON && + beacon->lcb_sub_command != LPFC_LCB_OFF) { + rjt_err = LSRJT_CMD_UNSUPPORTED; + goto rjt; + } + + if (phba->sli_rev < LPFC_SLI_REV4 || + phba->hba_flag & HBA_FCOE_MODE || + (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) < + LPFC_SLI_INTF_IF_TYPE_2)) { + rjt_err = LSRJT_CMD_UNSUPPORTED; + goto rjt; + } + + lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL); + if (!lcb_context) { + rjt_err = LSRJT_UNABLE_TPC; + goto rjt; + } + + state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0; + lcb_context->sub_command = beacon->lcb_sub_command; + lcb_context->capability = 0; + lcb_context->type = beacon->lcb_type; + lcb_context->frequency = beacon->lcb_frequency; + lcb_context->duration = beacon->lcb_duration; + lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb); + lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb); + lcb_context->ndlp = lpfc_nlp_get(ndlp); + if (!lcb_context->ndlp) { + rjt_err = LSRJT_UNABLE_TPC; + goto rjt_free; + } + + if (lpfc_sli4_set_beacon(vport, lcb_context, state)) { + lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT, + "0193 failed to send mail box"); + lpfc_nlp_put(ndlp); + rjt_err = LSRJT_UNABLE_TPC; + goto rjt_free; + } + return 0; + +rjt_free: + kfree(lcb_context); +rjt: + memset(&stat, 0, sizeof(stat)); + stat.un.b.lsRjtRsnCode = rjt_err; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); + return 1; +} + + +/** + * lpfc_els_flush_rscn - Clean up any rscn activities with a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine cleans up any Registration State Change Notification + * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the + * @vport together with the host_lock is used to prevent multiple thread + * trying to access the RSCN array on a same @vport at the same time. + **/ +void +lpfc_els_flush_rscn(struct lpfc_vport *vport) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + int i; + + spin_lock_irq(shost->host_lock); + if (vport->fc_rscn_flush) { + /* Another thread is walking fc_rscn_id_list on this vport */ + spin_unlock_irq(shost->host_lock); + return; + } + /* Indicate we are walking lpfc_els_flush_rscn on this vport */ + vport->fc_rscn_flush = 1; + spin_unlock_irq(shost->host_lock); + + for (i = 0; i < vport->fc_rscn_id_cnt; i++) { + lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]); + vport->fc_rscn_id_list[i] = NULL; + } + spin_lock_irq(shost->host_lock); + vport->fc_rscn_id_cnt = 0; + vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY); + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + /* Indicate we are done walking this fc_rscn_id_list */ + vport->fc_rscn_flush = 0; +} + +/** + * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did + * @vport: pointer to a host virtual N_Port data structure. + * @did: remote destination port identifier. + * + * This routine checks whether there is any pending Registration State + * Configuration Notification (RSCN) to a @did on @vport. + * + * Return code + * None zero - The @did matched with a pending rscn + * 0 - not able to match @did with a pending rscn + **/ +int +lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did) +{ + D_ID ns_did; + D_ID rscn_did; + uint32_t *lp; + uint32_t payload_len, i; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + ns_did.un.word = did; + + /* Never match fabric nodes for RSCNs */ + if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) + return 0; + + /* If we are doing a FULL RSCN rediscovery, match everything */ + if (vport->fc_flag & FC_RSCN_DISCOVERY) + return did; + + spin_lock_irq(shost->host_lock); + if (vport->fc_rscn_flush) { + /* Another thread is walking fc_rscn_id_list on this vport */ + spin_unlock_irq(shost->host_lock); + return 0; + } + /* Indicate we are walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 1; + spin_unlock_irq(shost->host_lock); + for (i = 0; i < vport->fc_rscn_id_cnt; i++) { + lp = vport->fc_rscn_id_list[i]->virt; + payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); + payload_len -= sizeof(uint32_t); /* take off word 0 */ + while (payload_len) { + rscn_did.un.word = be32_to_cpu(*lp++); + payload_len -= sizeof(uint32_t); + switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) { + case RSCN_ADDRESS_FORMAT_PORT: + if ((ns_did.un.b.domain == rscn_did.un.b.domain) + && (ns_did.un.b.area == rscn_did.un.b.area) + && (ns_did.un.b.id == rscn_did.un.b.id)) + goto return_did_out; + break; + case RSCN_ADDRESS_FORMAT_AREA: + if ((ns_did.un.b.domain == rscn_did.un.b.domain) + && (ns_did.un.b.area == rscn_did.un.b.area)) + goto return_did_out; + break; + case RSCN_ADDRESS_FORMAT_DOMAIN: + if (ns_did.un.b.domain == rscn_did.un.b.domain) + goto return_did_out; + break; + case RSCN_ADDRESS_FORMAT_FABRIC: + goto return_did_out; + } + } + } + /* Indicate we are done with walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 0; + return 0; +return_did_out: + /* Indicate we are done with walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 0; + return did; +} + +/** + * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the + * state machine for a @vport's nodes that are with pending RSCN (Registration + * State Change Notification). + * + * Return code + * 0 - Successful (currently alway return 0) + **/ +static int +lpfc_rscn_recovery_check(struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp = NULL, *n; + + /* Move all affected nodes by pending RSCNs to NPR state. */ + list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) { + if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) || + !lpfc_rscn_payload_check(vport, ndlp->nlp_DID)) + continue; + + /* NVME Target mode does not do RSCN Recovery. */ + if (vport->phba->nvmet_support) + continue; + + /* If we are in the process of doing discovery on this + * NPort, let it continue on its own. + */ + switch (ndlp->nlp_state) { + case NLP_STE_PLOGI_ISSUE: + case NLP_STE_ADISC_ISSUE: + case NLP_STE_REG_LOGIN_ISSUE: + case NLP_STE_PRLI_ISSUE: + case NLP_STE_LOGO_ISSUE: + continue; + } + + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RECOVERY); + lpfc_cancel_retry_delay_tmo(vport, ndlp); + } + return 0; +} + +/** + * lpfc_send_rscn_event - Send an RSCN event to management application + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * + * lpfc_send_rscn_event sends an RSCN netlink event to management + * applications. + */ +static void +lpfc_send_rscn_event(struct lpfc_vport *vport, + struct lpfc_iocbq *cmdiocb) +{ + struct lpfc_dmabuf *pcmd; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + uint32_t *payload_ptr; + uint32_t payload_len; + struct lpfc_rscn_event_header *rscn_event_data; + + pcmd = cmdiocb->cmd_dmabuf; + payload_ptr = (uint32_t *) pcmd->virt; + payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK); + + rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) + + payload_len, GFP_KERNEL); + if (!rscn_event_data) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0147 Failed to allocate memory for RSCN event\n"); + return; + } + rscn_event_data->event_type = FC_REG_RSCN_EVENT; + rscn_event_data->payload_length = payload_len; + memcpy(rscn_event_data->rscn_payload, payload_ptr, + payload_len); + + fc_host_post_vendor_event(shost, + fc_get_event_number(), + sizeof(struct lpfc_rscn_event_header) + payload_len, + (char *)rscn_event_data, + LPFC_NL_VENDOR_ID); + + kfree(rscn_event_data); +} + +/** + * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes an unsolicited RSCN (Registration State Change + * Notification) IOCB. First, the payload of the unsolicited RSCN is walked + * to invoke fc_host_post_event() routine to the FC transport layer. If the + * discover state machine is about to begin discovery, it just accepts the + * RSCN and the discovery process will satisfy the RSCN. If this RSCN only + * contains N_Port IDs for other vports on this HBA, it just accepts the + * RSCN and ignore processing it. If the state machine is in the recovery + * state, the fc_rscn_id_list of this @vport is walked and the + * lpfc_rscn_recovery_check() routine is invoked to send recovery event for + * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn() + * routine is invoked to handle the RSCN event. + * + * Return code + * 0 - Just sent the acc response + * 1 - Sent the acc response and waited for name server completion + **/ +static int +lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + struct lpfc_dmabuf *pcmd; + uint32_t *lp, *datap; + uint32_t payload_len, length, nportid, *cmd; + int rscn_cnt; + int rscn_id = 0, hba_id = 0; + int i, tmo; + + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint32_t *) pcmd->virt; + + payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK); + payload_len -= sizeof(uint32_t); /* take off word 0 */ + /* RSCN received */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0214 RSCN received Data: x%x x%x x%x x%x\n", + vport->fc_flag, payload_len, *lp, + vport->fc_rscn_id_cnt); + + /* Send an RSCN event to the management application */ + lpfc_send_rscn_event(vport, cmdiocb); + + for (i = 0; i < payload_len/sizeof(uint32_t); i++) + fc_host_post_event(shost, fc_get_event_number(), + FCH_EVT_RSCN, lp[i]); + + /* Check if RSCN is coming from a direct-connected remote NPort */ + if (vport->fc_flag & FC_PT2PT) { + /* If so, just ACC it, no other action needed for now */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2024 pt2pt RSCN %08x Data: x%x x%x\n", + *lp, vport->fc_flag, payload_len); + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + + /* Check to see if we need to NVME rescan this target + * remoteport. + */ + if (ndlp->nlp_fc4_type & NLP_FC4_NVME && + ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY)) + lpfc_nvme_rescan_port(vport, ndlp); + return 0; + } + + /* If we are about to begin discovery, just ACC the RSCN. + * Discovery processing will satisfy it. + */ + if (vport->port_state <= LPFC_NS_QRY) { + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RSCN ignore: did:x%x/ste:x%x flg:x%x", + ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); + + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + return 0; + } + + /* If this RSCN just contains NPortIDs for other vports on this HBA, + * just ACC and ignore it. + */ + if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && + !(vport->cfg_peer_port_login)) { + i = payload_len; + datap = lp; + while (i > 0) { + nportid = *datap++; + nportid = ((be32_to_cpu(nportid)) & Mask_DID); + i -= sizeof(uint32_t); + rscn_id++; + if (lpfc_find_vport_by_did(phba, nportid)) + hba_id++; + } + if (rscn_id == hba_id) { + /* ALL NPortIDs in RSCN are on HBA */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0219 Ignore RSCN " + "Data: x%x x%x x%x x%x\n", + vport->fc_flag, payload_len, + *lp, vport->fc_rscn_id_cnt); + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RSCN vport: did:x%x/ste:x%x flg:x%x", + ndlp->nlp_DID, vport->port_state, + ndlp->nlp_flag); + + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, + ndlp, NULL); + /* Restart disctmo if its already running */ + if (vport->fc_flag & FC_DISC_TMO) { + tmo = ((phba->fc_ratov * 3) + 3); + mod_timer(&vport->fc_disctmo, + jiffies + + msecs_to_jiffies(1000 * tmo)); + } + return 0; + } + } + + spin_lock_irq(shost->host_lock); + if (vport->fc_rscn_flush) { + /* Another thread is walking fc_rscn_id_list on this vport */ + vport->fc_flag |= FC_RSCN_DISCOVERY; + spin_unlock_irq(shost->host_lock); + /* Send back ACC */ + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + return 0; + } + /* Indicate we are walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 1; + spin_unlock_irq(shost->host_lock); + /* Get the array count after successfully have the token */ + rscn_cnt = vport->fc_rscn_id_cnt; + /* If we are already processing an RSCN, save the received + * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later. + */ + if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) { + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RSCN defer: did:x%x/ste:x%x flg:x%x", + ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); + + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_RSCN_DEFERRED; + + /* Restart disctmo if its already running */ + if (vport->fc_flag & FC_DISC_TMO) { + tmo = ((phba->fc_ratov * 3) + 3); + mod_timer(&vport->fc_disctmo, + jiffies + msecs_to_jiffies(1000 * tmo)); + } + if ((rscn_cnt < FC_MAX_HOLD_RSCN) && + !(vport->fc_flag & FC_RSCN_DISCOVERY)) { + vport->fc_flag |= FC_RSCN_MODE; + spin_unlock_irq(shost->host_lock); + if (rscn_cnt) { + cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; + length = be32_to_cpu(*cmd & ~ELS_CMD_MASK); + } + if ((rscn_cnt) && + (payload_len + length <= LPFC_BPL_SIZE)) { + *cmd &= ELS_CMD_MASK; + *cmd |= cpu_to_be32(payload_len + length); + memcpy(((uint8_t *)cmd) + length, lp, + payload_len); + } else { + vport->fc_rscn_id_list[rscn_cnt] = pcmd; + vport->fc_rscn_id_cnt++; + /* If we zero, cmdiocb->cmd_dmabuf, the calling + * routine will not try to free it. + */ + cmdiocb->cmd_dmabuf = NULL; + } + /* Deferred RSCN */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0235 Deferred RSCN " + "Data: x%x x%x x%x\n", + vport->fc_rscn_id_cnt, vport->fc_flag, + vport->port_state); + } else { + vport->fc_flag |= FC_RSCN_DISCOVERY; + spin_unlock_irq(shost->host_lock); + /* ReDiscovery RSCN */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0234 ReDiscovery RSCN " + "Data: x%x x%x x%x\n", + vport->fc_rscn_id_cnt, vport->fc_flag, + vport->port_state); + } + /* Indicate we are done walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 0; + /* Send back ACC */ + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + /* send RECOVERY event for ALL nodes that match RSCN payload */ + lpfc_rscn_recovery_check(vport); + return 0; + } + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RSCN: did:x%x/ste:x%x flg:x%x", + ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag); + + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_RSCN_MODE; + spin_unlock_irq(shost->host_lock); + vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; + /* Indicate we are done walking fc_rscn_id_list on this vport */ + vport->fc_rscn_flush = 0; + /* + * If we zero, cmdiocb->cmd_dmabuf, the calling routine will + * not try to free it. + */ + cmdiocb->cmd_dmabuf = NULL; + lpfc_set_disctmo(vport); + /* Send back ACC */ + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + /* send RECOVERY event for ALL nodes that match RSCN payload */ + lpfc_rscn_recovery_check(vport); + return lpfc_els_handle_rscn(vport); +} + +/** + * lpfc_els_handle_rscn - Handle rscn for a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine handles the Registration State Configuration Notification + * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall + * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise, + * if the ndlp to NameServer exists, a Common Transport (CT) command to the + * NameServer shall be issued. If CT command to the NameServer fails to be + * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any + * RSCN activities with the @vport. + * + * Return code + * 0 - Cleaned up rscn on the @vport + * 1 - Wait for plogi to name server before proceed + **/ +int +lpfc_els_handle_rscn(struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp; + struct lpfc_hba *phba = vport->phba; + + /* Ignore RSCN if the port is being torn down. */ + if (vport->load_flag & FC_UNLOADING) { + lpfc_els_flush_rscn(vport); + return 0; + } + + /* Start timer for RSCN processing */ + lpfc_set_disctmo(vport); + + /* RSCN processed */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "0215 RSCN processed Data: x%x x%x x%x x%x x%x x%x\n", + vport->fc_flag, 0, vport->fc_rscn_id_cnt, + vport->port_state, vport->num_disc_nodes, + vport->gidft_inp); + + /* To process RSCN, first compare RSCN data with NameServer */ + vport->fc_ns_retry = 0; + vport->num_disc_nodes = 0; + + ndlp = lpfc_findnode_did(vport, NameServer_DID); + if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { + /* Good ndlp, issue CT Request to NameServer. Need to + * know how many gidfts were issued. If none, then just + * flush the RSCN. Otherwise, the outstanding requests + * need to complete. + */ + if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) { + if (lpfc_issue_gidft(vport) > 0) + return 1; + } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) { + if (lpfc_issue_gidpt(vport) > 0) + return 1; + } else { + return 1; + } + } else { + /* Nameserver login in question. Revalidate. */ + if (ndlp) { + ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + } else { + ndlp = lpfc_nlp_init(vport, NameServer_DID); + if (!ndlp) { + lpfc_els_flush_rscn(vport); + return 0; + } + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + } + ndlp->nlp_type |= NLP_FABRIC; + lpfc_issue_els_plogi(vport, NameServer_DID, 0); + /* Wait for NameServer login cmpl before we can + * continue + */ + return 1; + } + + lpfc_els_flush_rscn(vport); + return 0; +} + +/** + * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Fabric Login (FLOGI) IOCB received as an ELS + * unsolicited event. An unsolicited FLOGI can be received in a point-to- + * point topology. As an unsolicited FLOGI should not be received in a loop + * mode, any unsolicited FLOGI received in loop mode shall be ignored. The + * lpfc_check_sparm() routine is invoked to check the parameters in the + * unsolicited FLOGI. If parameters validation failed, the routine + * lpfc_els_rsp_reject() shall be called with reject reason code set to + * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the + * FLOGI shall be compared with the Port WWN of the @vport to determine who + * will initiate PLOGI. The higher lexicographical value party shall has + * higher priority (as the winning port) and will initiate PLOGI and + * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result + * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI + * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI. + * + * Return code + * 0 - Successfully processed the unsolicited flogi + * 1 - Failed to process the unsolicited flogi + **/ +static int +lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_hba *phba = vport->phba; + struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf; + uint32_t *lp = (uint32_t *) pcmd->virt; + union lpfc_wqe128 *wqe = &cmdiocb->wqe; + struct serv_parm *sp; + LPFC_MBOXQ_t *mbox; + uint32_t cmd, did; + int rc; + uint32_t fc_flag = 0; + uint32_t port_state = 0; + + /* Clear external loopback plug detected flag */ + phba->link_flag &= ~LS_EXTERNAL_LOOPBACK; + + cmd = *lp++; + sp = (struct serv_parm *) lp; + + /* FLOGI received */ + + lpfc_set_disctmo(vport); + + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + /* We should never receive a FLOGI in loop mode, ignore it */ + did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest); + + /* An FLOGI ELS command <elsCmd> was received from DID <did> in + Loop Mode */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0113 An FLOGI ELS command x%x was " + "received from DID x%x in Loop Mode\n", + cmd, did); + return 1; + } + + (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1); + + /* + * If our portname is greater than the remote portname, + * then we initiate Nport login. + */ + + rc = memcmp(&vport->fc_portname, &sp->portName, + sizeof(struct lpfc_name)); + + if (!rc) { + if (phba->sli_rev < LPFC_SLI_REV4) { + mbox = mempool_alloc(phba->mbox_mem_pool, + GFP_KERNEL); + if (!mbox) + return 1; + lpfc_linkdown(phba); + lpfc_init_link(phba, mbox, + phba->cfg_topology, + phba->cfg_link_speed); + mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mbox, + MBX_NOWAIT); + lpfc_set_loopback_flag(phba); + if (rc == MBX_NOT_FINISHED) + mempool_free(mbox, phba->mbox_mem_pool); + return 1; + } + + /* External loopback plug insertion detected */ + phba->link_flag |= LS_EXTERNAL_LOOPBACK; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC, + "1119 External Loopback plug detected\n"); + + /* abort the flogi coming back to ourselves + * due to external loopback on the port. + */ + lpfc_els_abort_flogi(phba); + return 0; + + } else if (rc > 0) { /* greater than */ + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_PT2PT_PLOGI; + spin_unlock_irq(shost->host_lock); + + /* If we have the high WWPN we can assign our own + * myDID; otherwise, we have to WAIT for a PLOGI + * from the remote NPort to find out what it + * will be. + */ + vport->fc_myDID = PT2PT_LocalID; + } else { + vport->fc_myDID = PT2PT_RemoteID; + } + + /* + * The vport state should go to LPFC_FLOGI only + * AFTER we issue a FLOGI, not receive one. + */ + spin_lock_irq(shost->host_lock); + fc_flag = vport->fc_flag; + port_state = vport->port_state; + vport->fc_flag |= FC_PT2PT; + vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + + /* Acking an unsol FLOGI. Count 1 for link bounce + * work-around. + */ + vport->rcv_flogi_cnt++; + spin_unlock_irq(shost->host_lock); + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3311 Rcv Flogi PS x%x new PS x%x " + "fc_flag x%x new fc_flag x%x\n", + port_state, vport->port_state, + fc_flag, vport->fc_flag); + + /* + * We temporarily set fc_myDID to make it look like we are + * a Fabric. This is done just so we end up with the right + * did / sid on the FLOGI ACC rsp. + */ + did = vport->fc_myDID; + vport->fc_myDID = Fabric_DID; + + memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm)); + + /* Defer ACC response until AFTER we issue a FLOGI */ + if (!(phba->hba_flag & HBA_FLOGI_ISSUED)) { + phba->defer_flogi_acc_rx_id = bf_get(wqe_ctxt_tag, + &wqe->xmit_els_rsp.wqe_com); + phba->defer_flogi_acc_ox_id = bf_get(wqe_rcvoxid, + &wqe->xmit_els_rsp.wqe_com); + + vport->fc_myDID = did; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3344 Deferring FLOGI ACC: rx_id: x%x," + " ox_id: x%x, hba_flag x%x\n", + phba->defer_flogi_acc_rx_id, + phba->defer_flogi_acc_ox_id, phba->hba_flag); + + phba->defer_flogi_acc_flag = true; + + return 0; + } + + /* Send back ACC */ + lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL); + + /* Now lets put fc_myDID back to what its supposed to be */ + vport->fc_myDID = did; + + return 0; +} + +/** + * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Request Node Identification Data (RNID) IOCB + * received as an ELS unsolicited event. Only when the RNID specified format + * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data) + * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to + * Accept (ACC) the RNID ELS command. All the other RNID formats are + * rejected by invoking the lpfc_els_rsp_reject() routine. + * + * Return code + * 0 - Successfully processed rnid iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + RNID *rn; + struct ls_rjt stat; + + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint32_t *) pcmd->virt; + + lp++; + rn = (RNID *) lp; + + /* RNID received */ + + switch (rn->Format) { + case 0: + case RNID_TOPOLOGY_DISC: + /* Send back ACC */ + lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp); + break; + default: + /* Reject this request because format not supported */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, + NULL); + } + return 0; +} + +/** + * lpfc_els_rcv_echo - Process an unsolicited echo iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * Return code + * 0 - Successfully processed echo iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + uint8_t *pcmd; + + pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt; + + /* skip over first word of echo command to find echo data */ + pcmd += sizeof(uint32_t); + + lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp); + return 0; +} + +/** + * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes a Link Incident Report Registration(LIRR) IOCB + * received as an ELS unsolicited event. Currently, this function just invokes + * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally. + * + * Return code + * 0 - Successfully processed lirr iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct ls_rjt stat; + + /* For now, unconditionally reject this command */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); + return 0; +} + +/** + * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB + * received as an ELS unsolicited event. A request to RRQ shall only + * be accepted if the Originator Nx_Port N_Port_ID or the Responder + * Nx_Port N_Port_ID of the target Exchange is the same as the + * N_Port_ID of the Nx_Port that makes the request. If the RRQ is + * not accepted, an LS_RJT with reason code "Unable to perform + * command request" and reason code explanation "Invalid Originator + * S_ID" shall be returned. For now, we just unconditionally accept + * RRQ from the target. + **/ +static void +lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + if (vport->phba->sli_rev == LPFC_SLI_REV4) + lpfc_els_clear_rrq(vport, cmdiocb, ndlp); +} + +/** + * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd + * @phba: pointer to lpfc hba data structure. + * @pmb: pointer to the driver internal queue element for mailbox command. + * + * This routine is the completion callback function for the MBX_READ_LNK_STAT + * mailbox command. This callback function is to actually send the Accept + * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It + * collects the link statistics from the completion of the MBX_READ_LNK_STAT + * mailbox command, constructs the RLS response with the link statistics + * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC + * response to the RLS. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the RLS Accept Response + * ELS IOCB command. + * + **/ +static void +lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + int rc = 0; + MAILBOX_t *mb; + IOCB_t *icmd; + union lpfc_wqe128 *wqe; + struct RLS_RSP *rls_rsp; + uint8_t *pcmd; + struct lpfc_iocbq *elsiocb; + struct lpfc_nodelist *ndlp; + uint16_t oxid; + uint16_t rxid; + uint32_t cmdsize; + u32 ulp_context; + + mb = &pmb->u.mb; + + ndlp = pmb->ctx_ndlp; + rxid = (uint16_t)((unsigned long)(pmb->ctx_buf) & 0xffff); + oxid = (uint16_t)(((unsigned long)(pmb->ctx_buf) >> 16) & 0xffff); + pmb->ctx_buf = NULL; + pmb->ctx_ndlp = NULL; + + if (mb->mbxStatus) { + mempool_free(pmb, phba->mbox_mem_pool); + return; + } + + cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t); + elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, + lpfc_max_els_tries, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + + /* Decrement the ndlp reference count from previous mbox command */ + lpfc_nlp_put(ndlp); + + if (!elsiocb) { + mempool_free(pmb, phba->mbox_mem_pool); + return; + } + + ulp_context = get_job_ulpcontext(phba, elsiocb); + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* Xri / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = rxid; + icmd->unsli3.rcvsli3.ox_id = oxid; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); /* Skip past command */ + rls_rsp = (struct RLS_RSP *)pcmd; + + rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt); + rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt); + rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt); + rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt); + rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord); + rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt); + mempool_free(pmb, phba->mbox_mem_pool); + /* Xmit ELS RLS ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, + "2874 Xmit ELS RLS ACC response tag x%x xri x%x, " + "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } + return; +} + +/** + * lpfc_els_rcv_rls - Process an unsolicited rls iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Read Link Status (RLS) IOCB received as an + * ELS unsolicited event. It first checks the remote port state. If the + * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE + * state, it invokes the lpfc_els_rsl_reject() routine to send the reject + * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command + * for reading the HBA link statistics. It is for the callback function, + * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command + * to actually sending out RPL Accept (ACC) response. + * + * Return codes + * 0 - Successfully processed rls iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mbox; + struct ls_rjt stat; + u32 ctx = get_job_ulpcontext(phba, cmdiocb); + u32 ox_id = get_job_rcvoxid(phba, cmdiocb); + + if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) + /* reject the unsolicited RLS request and done with it */ + goto reject_out; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC); + if (mbox) { + lpfc_read_lnk_stat(phba, mbox); + mbox->ctx_buf = (void *)((unsigned long) + (ox_id << 16 | ctx)); + mbox->ctx_ndlp = lpfc_nlp_get(ndlp); + if (!mbox->ctx_ndlp) + goto node_err; + mbox->vport = vport; + mbox->mbox_cmpl = lpfc_els_rsp_rls_acc; + if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) + != MBX_NOT_FINISHED) + /* Mbox completion will send ELS Response */ + return 0; + /* Decrement reference count used for the failed mbox + * command. + */ + lpfc_nlp_put(ndlp); +node_err: + mempool_free(mbox, phba->mbox_mem_pool); + } +reject_out: + /* issue rejection response */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); + return 0; +} + +/** + * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Read Timout Value (RTV) IOCB received as an + * ELS unsolicited event. It first checks the remote port state. If the + * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE + * state, it invokes the lpfc_els_rsl_reject() routine to send the reject + * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout + * Value (RTV) unsolicited IOCB event. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the RTV Accept Response + * ELS IOCB command. + * + * Return codes + * 0 - Successfully processed rtv iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + int rc = 0; + IOCB_t *icmd; + union lpfc_wqe128 *wqe; + struct lpfc_hba *phba = vport->phba; + struct ls_rjt stat; + struct RTV_RSP *rtv_rsp; + uint8_t *pcmd; + struct lpfc_iocbq *elsiocb; + uint32_t cmdsize; + u32 ulp_context; + + if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) + /* reject the unsolicited RTV request and done with it */ + goto reject_out; + + cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t); + elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize, + lpfc_max_els_tries, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint32_t); /* Skip past command */ + + ulp_context = get_job_ulpcontext(phba, elsiocb); + /* use the command's xri in the response */ + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, cmdiocb)); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, cmdiocb)); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb); + icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb); + } + + rtv_rsp = (struct RTV_RSP *)pcmd; + + /* populate RTV payload */ + rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */ + rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov); + bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0); + bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */ + rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov); + + /* Xmit ELS RLS ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS, + "2875 Xmit ELS RTV ACC response tag x%x xri x%x, " + "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, " + "Data: x%x x%x x%x\n", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi, + rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov); + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 0; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + } + return 0; + +reject_out: + /* issue rejection response */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL); + return 0; +} + +/* lpfc_issue_els_rrq - Process an unsolicited rrq iocb + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @did: DID of the target. + * @rrq: Pointer to the rrq struct. + * + * Build a ELS RRQ command and send it to the target. If the issue_iocb is + * Successful the the completion handler will clear the RRQ. + * + * Return codes + * 0 - Successfully sent rrq els iocb. + * 1 - Failed to send rrq els iocb. + **/ +static int +lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint32_t did, struct lpfc_node_rrq *rrq) +{ + struct lpfc_hba *phba = vport->phba; + struct RRQ *els_rrq; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + int ret; + + if (!ndlp) + return 1; + + /* If ndlp is not NULL, we will bump the reference count on it */ + cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did, + ELS_CMD_RRQ); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + + /* For RRQ request, remainder of payload is Exchange IDs */ + *((uint32_t *) (pcmd)) = ELS_CMD_RRQ; + pcmd += sizeof(uint32_t); + els_rrq = (struct RRQ *) pcmd; + + bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]); + bf_set(rrq_rxid, els_rrq, rrq->rxid); + bf_set(rrq_did, els_rrq, vport->fc_myDID); + els_rrq->rrq = cpu_to_be32(els_rrq->rrq); + els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg); + + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue RRQ: did:x%x", + did, rrq->xritag, rrq->rxid); + elsiocb->context_un.rrq = rrq; + elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq; + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) + goto io_err; + + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (ret == IOCB_ERROR) { + lpfc_nlp_put(ndlp); + goto io_err; + } + return 0; + + io_err: + lpfc_els_free_iocb(phba, elsiocb); + return 1; +} + +/** + * lpfc_send_rrq - Sends ELS RRQ if needed. + * @phba: pointer to lpfc hba data structure. + * @rrq: pointer to the active rrq. + * + * This routine will call the lpfc_issue_els_rrq if the rrq is + * still active for the xri. If this function returns a failure then + * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq. + * + * Returns 0 Success. + * 1 Failure. + **/ +int +lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq) +{ + struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport, + rrq->nlp_DID); + if (!ndlp) + return 1; + + if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag)) + return lpfc_issue_els_rrq(rrq->vport, ndlp, + rrq->nlp_DID, rrq); + else + return 1; +} + +/** + * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command + * @vport: pointer to a host virtual N_Port data structure. + * @cmdsize: size of the ELS command. + * @oldiocb: pointer to the original lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command. + * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the RPL Accept Response + * ELS command. + * + * Return code + * 0 - Successfully issued ACC RPL ELS command + * 1 - Failed to issue ACC RPL ELS command + **/ +static int +lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize, + struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + IOCB_t *icmd; + union lpfc_wqe128 *wqe; + RPL_RSP rpl_rsp; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + u32 ulp_context; + + elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp, + ndlp->nlp_DID, ELS_CMD_ACC); + + if (!elsiocb) + return 1; + + ulp_context = get_job_ulpcontext(phba, elsiocb); + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + /* Xri / rx_id */ + bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, + get_job_ulpcontext(phba, oldiocb)); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + get_job_rcvoxid(phba, oldiocb)); + } else { + icmd = &elsiocb->iocb; + icmd->ulpContext = get_job_ulpcontext(phba, oldiocb); + icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb); + } + + pcmd = elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_ACC; + pcmd += sizeof(uint16_t); + *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize); + pcmd += sizeof(uint16_t); + + /* Setup the RPL ACC payload */ + rpl_rsp.listLen = be32_to_cpu(1); + rpl_rsp.index = 0; + rpl_rsp.port_num_blk.portNum = 0; + rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID); + memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname, + sizeof(struct lpfc_name)); + memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t)); + /* Xmit ELS RPL ACC response tag <ulpIoTag> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0120 Xmit ELS RPL ACC response tag x%x " + "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, " + "rpi x%x\n", + elsiocb->iotag, ulp_context, + ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state, + ndlp->nlp_rpi); + elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp; + phba->fc_stat.elsXmitACC++; + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + return 1; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return 1; + } + + return 0; +} + +/** + * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Read Port List (RPL) IOCB received as an ELS + * unsolicited event. It first checks the remote port state. If the remote + * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it + * invokes the lpfc_els_rsp_reject() routine to send reject response. + * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine + * to accept the RPL. + * + * Return code + * 0 - Successfully processed rpl iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + uint32_t maxsize; + uint16_t cmdsize; + RPL *rpl; + struct ls_rjt stat; + + if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && + (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { + /* issue rejection response */ + stat.un.b.lsRjtRsvd0 = 0; + stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC; + stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA; + stat.un.b.vendorUnique = 0; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, + NULL); + /* rejected the unsolicited RPL request and done with it */ + return 0; + } + + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint32_t *) pcmd->virt; + rpl = (RPL *) (lp + 1); + maxsize = be32_to_cpu(rpl->maxsize); + + /* We support only one port */ + if ((rpl->index == 0) && + ((maxsize == 0) || + ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) { + cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP); + } else { + cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t); + } + lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp); + + return 0; +} + +/** + * lpfc_els_rcv_farp - Process an unsolicited farp request els command + * @vport: pointer to a virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Fibre Channel Address Resolution Protocol + * (FARP) Request IOCB received as an ELS unsolicited event. Currently, + * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such, + * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the + * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the + * remote PortName is compared against the FC PortName stored in the @vport + * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is + * compared against the FC NodeName stored in the @vport data structure. + * If any of these matches and the FARP_REQUEST_FARPR flag is set in the + * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is + * invoked to send out FARP Response to the remote node. Before sending the + * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP + * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi() + * routine is invoked to log into the remote port first. + * + * Return code + * 0 - Either the FARP Match Mode not supported or successfully processed + **/ +static int +lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + FARP *fp; + uint32_t cnt, did; + + did = get_job_els_rsp64_did(vport->phba, cmdiocb); + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint32_t *) pcmd->virt; + + lp++; + fp = (FARP *) lp; + /* FARP-REQ received from DID <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0601 FARP-REQ received from DID x%x\n", did); + /* We will only support match on WWPN or WWNN */ + if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) { + return 0; + } + + cnt = 0; + /* If this FARP command is searching for my portname */ + if (fp->Mflags & FARP_MATCH_PORT) { + if (memcmp(&fp->RportName, &vport->fc_portname, + sizeof(struct lpfc_name)) == 0) + cnt = 1; + } + + /* If this FARP command is searching for my nodename */ + if (fp->Mflags & FARP_MATCH_NODE) { + if (memcmp(&fp->RnodeName, &vport->fc_nodename, + sizeof(struct lpfc_name)) == 0) + cnt = 1; + } + + if (cnt) { + if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || + (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { + /* Log back into the node before sending the FARP. */ + if (fp->Rflags & FARP_REQUEST_PLOGI) { + ndlp->nlp_prev_state = ndlp->nlp_state; + lpfc_nlp_set_state(vport, ndlp, + NLP_STE_PLOGI_ISSUE); + lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); + } + + /* Send a FARP response to that node */ + if (fp->Rflags & FARP_REQUEST_FARPR) + lpfc_issue_els_farpr(vport, did, 0); + } + } + return 0; +} + +/** + * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine processes Fibre Channel Address Resolution Protocol + * Response (FARPR) IOCB received as an ELS unsolicited event. It simply + * invokes the lpfc_els_rsp_acc() routine to the remote node to accept + * the FARP response request. + * + * Return code + * 0 - Successfully processed FARPR IOCB (currently always return 0) + **/ +static int +lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_dmabuf *pcmd; + uint32_t *lp; + uint32_t did; + + did = get_job_els_rsp64_did(vport->phba, cmdiocb); + pcmd = cmdiocb->cmd_dmabuf; + lp = (uint32_t *)pcmd->virt; + + lp++; + /* FARP-RSP received from DID <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0600 FARP-RSP received from DID x%x\n", did); + /* ACCEPT the Farp resp request */ + lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL); + + return 0; +} + +/** + * lpfc_els_rcv_fan - Process an unsolicited fan iocb command + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @fan_ndlp: pointer to a node-list data structure. + * + * This routine processes a Fabric Address Notification (FAN) IOCB + * command received as an ELS unsolicited event. The FAN ELS command will + * only be processed on a physical port (i.e., the @vport represents the + * physical port). The fabric NodeName and PortName from the FAN IOCB are + * compared against those in the phba data structure. If any of those is + * different, the lpfc_initial_flogi() routine is invoked to initialize + * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise, + * if both of those are identical, the lpfc_issue_fabric_reglogin() routine + * is invoked to register login to the fabric. + * + * Return code + * 0 - Successfully processed fan iocb (currently always return 0). + **/ +static int +lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *fan_ndlp) +{ + struct lpfc_hba *phba = vport->phba; + uint32_t *lp; + FAN *fp; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n"); + lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt; + fp = (FAN *) ++lp; + /* FAN received; Fan does not have a reply sequence */ + if ((vport == phba->pport) && + (vport->port_state == LPFC_LOCAL_CFG_LINK)) { + if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName, + sizeof(struct lpfc_name))) || + (memcmp(&phba->fc_fabparam.portName, &fp->FportName, + sizeof(struct lpfc_name)))) { + /* This port has switched fabrics. FLOGI is required */ + lpfc_issue_init_vfi(vport); + } else { + /* FAN verified - skip FLOGI */ + vport->fc_myDID = vport->fc_prevDID; + if (phba->sli_rev < LPFC_SLI_REV4) + lpfc_issue_fabric_reglogin(vport); + else { + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3138 Need register VFI: (x%x/%x)\n", + vport->fc_prevDID, vport->fc_myDID); + lpfc_issue_reg_vfi(vport); + } + } + } + return 0; +} + +/** + * lpfc_els_rcv_edc - Process an unsolicited EDC iocb + * @vport: pointer to a host virtual N_Port data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @ndlp: pointer to a node-list data structure. + * + * Return code + * 0 - Successfully processed echo iocb (currently always return 0) + **/ +static int +lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, + struct lpfc_nodelist *ndlp) +{ + struct lpfc_hba *phba = vport->phba; + struct fc_els_edc *edc_req; + struct fc_tlv_desc *tlv; + uint8_t *payload; + uint32_t *ptr, dtag; + const char *dtag_nm; + int desc_cnt = 0, bytes_remain; + struct fc_diag_lnkflt_desc *plnkflt; + + payload = cmdiocb->cmd_dmabuf->virt; + + edc_req = (struct fc_els_edc *)payload; + bytes_remain = be32_to_cpu(edc_req->desc_len); + + ptr = (uint32_t *)payload; + lpfc_printf_vlog(vport, KERN_INFO, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "3319 Rcv EDC payload len %d: x%x x%x x%x\n", + bytes_remain, be32_to_cpu(*ptr), + be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2))); + + /* No signal support unless there is a congestion descriptor */ + phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED; + phba->cgn_sig_freq = 0; + phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN; + + if (bytes_remain <= 0) + goto out; + + tlv = edc_req->desc; + + /* + * cycle through EDC diagnostic descriptors to find the + * congestion signaling capability descriptor + */ + while (bytes_remain) { + if (bytes_remain < FC_TLV_DESC_HDR_SZ) { + lpfc_printf_log(phba, KERN_WARNING, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "6464 Truncated TLV hdr on " + "Diagnostic descriptor[%d]\n", + desc_cnt); + goto out; + } + + dtag = be32_to_cpu(tlv->desc_tag); + switch (dtag) { + case ELS_DTAG_LNK_FAULT_CAP: + if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || + FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != + sizeof(struct fc_diag_lnkflt_desc)) { + lpfc_printf_log(phba, KERN_WARNING, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "6465 Truncated Link Fault Diagnostic " + "descriptor[%d]: %d vs 0x%zx 0x%zx\n", + desc_cnt, bytes_remain, + FC_TLV_DESC_SZ_FROM_LENGTH(tlv), + sizeof(struct fc_diag_lnkflt_desc)); + goto out; + } + plnkflt = (struct fc_diag_lnkflt_desc *)tlv; + lpfc_printf_log(phba, KERN_INFO, + LOG_ELS | LOG_LDS_EVENT, + "4626 Link Fault Desc Data: x%08x len x%x " + "da x%x dd x%x interval x%x\n", + be32_to_cpu(plnkflt->desc_tag), + be32_to_cpu(plnkflt->desc_len), + be32_to_cpu( + plnkflt->degrade_activate_threshold), + be32_to_cpu( + plnkflt->degrade_deactivate_threshold), + be32_to_cpu(plnkflt->fec_degrade_interval)); + break; + case ELS_DTAG_CG_SIGNAL_CAP: + if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) || + FC_TLV_DESC_SZ_FROM_LENGTH(tlv) != + sizeof(struct fc_diag_cg_sig_desc)) { + lpfc_printf_log( + phba, KERN_WARNING, LOG_CGN_MGMT, + "6466 Truncated cgn signal Diagnostic " + "descriptor[%d]: %d vs 0x%zx 0x%zx\n", + desc_cnt, bytes_remain, + FC_TLV_DESC_SZ_FROM_LENGTH(tlv), + sizeof(struct fc_diag_cg_sig_desc)); + goto out; + } + + phba->cgn_reg_fpin = phba->cgn_init_reg_fpin; + phba->cgn_reg_signal = phba->cgn_init_reg_signal; + + /* We start negotiation with lpfc_fabric_cgn_frequency. + * When we process the EDC, we will settle on the + * higher frequency. + */ + phba->cgn_sig_freq = lpfc_fabric_cgn_frequency; + + lpfc_least_capable_settings( + phba, (struct fc_diag_cg_sig_desc *)tlv); + break; + default: + dtag_nm = lpfc_get_tlv_dtag_nm(dtag); + lpfc_printf_log(phba, KERN_WARNING, + LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT, + "6467 unknown Diagnostic " + "Descriptor[%d]: tag x%x (%s)\n", + desc_cnt, dtag, dtag_nm); + } + bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); + tlv = fc_tlv_next_desc(tlv); + desc_cnt++; + } +out: + /* Need to send back an ACC */ + lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp); + + lpfc_config_cgn_signal(phba); + return 0; +} + +/** + * lpfc_els_timeout - Handler funciton to the els timer + * @t: timer context used to obtain the vport. + * + * This routine is invoked by the ELS timer after timeout. It posts the ELS + * timer timeout event by setting the WORKER_ELS_TMO bit to the work port + * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake + * up the worker thread. It is for the worker thread to invoke the routine + * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO. + **/ +void +lpfc_els_timeout(struct timer_list *t) +{ + struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc); + struct lpfc_hba *phba = vport->phba; + uint32_t tmo_posted; + unsigned long iflag; + + spin_lock_irqsave(&vport->work_port_lock, iflag); + tmo_posted = vport->work_port_events & WORKER_ELS_TMO; + if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) + vport->work_port_events |= WORKER_ELS_TMO; + spin_unlock_irqrestore(&vport->work_port_lock, iflag); + + if ((!tmo_posted) && (!(vport->load_flag & FC_UNLOADING))) + lpfc_worker_wake_up(phba); + return; +} + + +/** + * lpfc_els_timeout_handler - Process an els timeout event + * @vport: pointer to a virtual N_Port data structure. + * + * This routine is the actual handler function that processes an ELS timeout + * event. It walks the ELS ring to get and abort all the IOCBs (except the + * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by + * invoking the lpfc_sli_issue_abort_iotag() routine. + **/ +void +lpfc_els_timeout_handler(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *tmp_iocb, *piocb; + IOCB_t *cmd = NULL; + struct lpfc_dmabuf *pcmd; + uint32_t els_command = 0; + uint32_t timeout; + uint32_t remote_ID = 0xffffffff; + LIST_HEAD(abort_list); + u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0; + + + timeout = (uint32_t)(phba->fc_ratov << 1); + + pring = lpfc_phba_elsring(phba); + if (unlikely(!pring)) + return; + + if (phba->pport->load_flag & FC_UNLOADING) + return; + + spin_lock_irq(&phba->hbalock); + if (phba->sli_rev == LPFC_SLI_REV4) + spin_lock(&pring->ring_lock); + + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { + ulp_command = get_job_cmnd(phba, piocb); + ulp_context = get_job_ulpcontext(phba, piocb); + did = get_job_els_rsp64_did(phba, piocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + iotag = get_wqe_reqtag(piocb); + } else { + cmd = &piocb->iocb; + iotag = cmd->ulpIoTag; + } + + if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 || + ulp_command == CMD_ABORT_XRI_CX || + ulp_command == CMD_ABORT_XRI_CN || + ulp_command == CMD_CLOSE_XRI_CN) + continue; + + if (piocb->vport != vport) + continue; + + pcmd = piocb->cmd_dmabuf; + if (pcmd) + els_command = *(uint32_t *) (pcmd->virt); + + if (els_command == ELS_CMD_FARP || + els_command == ELS_CMD_FARPR || + els_command == ELS_CMD_FDISC) + continue; + + if (piocb->drvrTimeout > 0) { + if (piocb->drvrTimeout >= timeout) + piocb->drvrTimeout -= timeout; + else + piocb->drvrTimeout = 0; + continue; + } + + remote_ID = 0xffffffff; + if (ulp_command != CMD_GEN_REQUEST64_CR) { + remote_ID = did; + } else { + struct lpfc_nodelist *ndlp; + ndlp = __lpfc_findnode_rpi(vport, ulp_context); + if (ndlp) + remote_ID = ndlp->nlp_DID; + } + list_add_tail(&piocb->dlist, &abort_list); + } + if (phba->sli_rev == LPFC_SLI_REV4) + spin_unlock(&pring->ring_lock); + spin_unlock_irq(&phba->hbalock); + + list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0127 ELS timeout Data: x%x x%x x%x " + "x%x\n", els_command, + remote_ID, ulp_command, iotag); + + spin_lock_irq(&phba->hbalock); + list_del_init(&piocb->dlist); + lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); + spin_unlock_irq(&phba->hbalock); + } + + /* Make sure HBA is alive */ + lpfc_issue_hb_tmo(phba); + + if (!list_empty(&pring->txcmplq)) + if (!(phba->pport->load_flag & FC_UNLOADING)) + mod_timer(&vport->els_tmofunc, + jiffies + msecs_to_jiffies(1000 * timeout)); +} + +/** + * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport + * @vport: pointer to a host virtual N_Port data structure. + * + * This routine is used to clean up all the outstanding ELS commands on a + * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport() + * routine. After that, it walks the ELS transmit queue to remove all the + * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For + * the IOCBs with a non-NULL completion callback function, the callback + * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and + * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion + * callback function, the IOCB will simply be released. Finally, it walks + * the ELS transmit completion queue to issue an abort IOCB to any transmit + * completion queue IOCB that is associated with the @vport and is not + * an IOCB from libdfc (i.e., the management plane IOCBs that are not + * part of the discovery state machine) out to HBA by invoking the + * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the + * abort IOCB to any transmit completion queueed IOCB, it does not guarantee + * the IOCBs are aborted when this function returns. + **/ +void +lpfc_els_flush_cmd(struct lpfc_vport *vport) +{ + LIST_HEAD(abort_list); + LIST_HEAD(cancel_list); + struct lpfc_hba *phba = vport->phba; + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *tmp_iocb, *piocb; + u32 ulp_command; + unsigned long iflags = 0; + bool mbx_tmo_err; + + lpfc_fabric_abort_vport(vport); + + /* + * For SLI3, only the hbalock is required. But SLI4 needs to coordinate + * with the ring insert operation. Because lpfc_sli_issue_abort_iotag + * ultimately grabs the ring_lock, the driver must splice the list into + * a working list and release the locks before calling the abort. + */ + spin_lock_irqsave(&phba->hbalock, iflags); + pring = lpfc_phba_elsring(phba); + + /* Bail out if we've no ELS wq, like in PCI error recovery case. */ + if (unlikely(!pring)) { + spin_unlock_irqrestore(&phba->hbalock, iflags); + return; + } + + if (phba->sli_rev == LPFC_SLI_REV4) + spin_lock(&pring->ring_lock); + + mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags); + /* First we need to issue aborts to outstanding cmds on txcmpl */ + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { + if (piocb->cmd_flag & LPFC_IO_LIBDFC && !mbx_tmo_err) + continue; + + if (piocb->vport != vport) + continue; + + if (piocb->cmd_flag & LPFC_DRIVER_ABORTED && !mbx_tmo_err) + continue; + + /* On the ELS ring we can have ELS_REQUESTs or + * GEN_REQUESTs waiting for a response. + */ + ulp_command = get_job_cmnd(phba, piocb); + if (ulp_command == CMD_ELS_REQUEST64_CR) { + list_add_tail(&piocb->dlist, &abort_list); + + /* If the link is down when flushing ELS commands + * the firmware will not complete them till after + * the link comes back up. This may confuse + * discovery for the new link up, so we need to + * change the compl routine to just clean up the iocb + * and avoid any retry logic. + */ + if (phba->link_state == LPFC_LINK_DOWN) + piocb->cmd_cmpl = lpfc_cmpl_els_link_down; + } else if (ulp_command == CMD_GEN_REQUEST64_CR || + mbx_tmo_err) + list_add_tail(&piocb->dlist, &abort_list); + } + + if (phba->sli_rev == LPFC_SLI_REV4) + spin_unlock(&pring->ring_lock); + spin_unlock_irqrestore(&phba->hbalock, iflags); + + /* Abort each txcmpl iocb on aborted list and remove the dlist links. */ + list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) { + spin_lock_irqsave(&phba->hbalock, iflags); + list_del_init(&piocb->dlist); + if (mbx_tmo_err) + list_move_tail(&piocb->list, &cancel_list); + else + lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL); + + spin_unlock_irqrestore(&phba->hbalock, iflags); + } + if (!list_empty(&cancel_list)) + lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); + else + /* Make sure HBA is alive */ + lpfc_issue_hb_tmo(phba); + + if (!list_empty(&abort_list)) + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "3387 abort list for txq not empty\n"); + INIT_LIST_HEAD(&abort_list); + + spin_lock_irqsave(&phba->hbalock, iflags); + if (phba->sli_rev == LPFC_SLI_REV4) + spin_lock(&pring->ring_lock); + + /* No need to abort the txq list, + * just queue them up for lpfc_sli_cancel_iocbs + */ + list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) { + ulp_command = get_job_cmnd(phba, piocb); + + if (piocb->cmd_flag & LPFC_IO_LIBDFC) + continue; + + /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */ + if (ulp_command == CMD_QUE_RING_BUF_CN || + ulp_command == CMD_QUE_RING_BUF64_CN || + ulp_command == CMD_CLOSE_XRI_CN || + ulp_command == CMD_ABORT_XRI_CN || + ulp_command == CMD_ABORT_XRI_CX) + continue; + + if (piocb->vport != vport) + continue; + + list_del_init(&piocb->list); + list_add_tail(&piocb->list, &abort_list); + } + + /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */ + if (vport == phba->pport) { + list_for_each_entry_safe(piocb, tmp_iocb, + &phba->fabric_iocb_list, list) { + list_del_init(&piocb->list); + list_add_tail(&piocb->list, &abort_list); + } + } + + if (phba->sli_rev == LPFC_SLI_REV4) + spin_unlock(&pring->ring_lock); + spin_unlock_irqrestore(&phba->hbalock, iflags); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &abort_list, + IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED); + + return; +} + +/** + * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA + * @phba: pointer to lpfc hba data structure. + * + * This routine is used to clean up all the outstanding ELS commands on a + * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba() + * routine. After that, it walks the ELS transmit queue to remove all the + * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For + * the IOCBs with the completion callback function associated, the callback + * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and + * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion + * callback function associated, the IOCB will simply be released. Finally, + * it walks the ELS transmit completion queue to issue an abort IOCB to any + * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the + * management plane IOCBs that are not part of the discovery state machine) + * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine. + **/ +void +lpfc_els_flush_all_cmd(struct lpfc_hba *phba) +{ + struct lpfc_vport *vport; + + spin_lock_irq(&phba->port_list_lock); + list_for_each_entry(vport, &phba->port_list, listentry) + lpfc_els_flush_cmd(vport); + spin_unlock_irq(&phba->port_list_lock); + + return; +} + +/** + * lpfc_send_els_failure_event - Posts an ELS command failure event + * @phba: Pointer to hba context object. + * @cmdiocbp: Pointer to command iocb which reported error. + * @rspiocbp: Pointer to response iocb which reported error. + * + * This function sends an event when there is an ELS command + * failure. + **/ +void +lpfc_send_els_failure_event(struct lpfc_hba *phba, + struct lpfc_iocbq *cmdiocbp, + struct lpfc_iocbq *rspiocbp) +{ + struct lpfc_vport *vport = cmdiocbp->vport; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_lsrjt_event lsrjt_event; + struct lpfc_fabric_event_header fabric_event; + struct ls_rjt stat; + struct lpfc_nodelist *ndlp; + uint32_t *pcmd; + u32 ulp_status, ulp_word4; + + ndlp = cmdiocbp->ndlp; + if (!ndlp) + return; + + ulp_status = get_job_ulpstatus(phba, rspiocbp); + ulp_word4 = get_job_word4(phba, rspiocbp); + + if (ulp_status == IOSTAT_LS_RJT) { + lsrjt_event.header.event_type = FC_REG_ELS_EVENT; + lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV; + memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname, + sizeof(struct lpfc_name)); + memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename, + sizeof(struct lpfc_name)); + pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt; + lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0; + stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4); + lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode; + lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp; + fc_host_post_vendor_event(shost, + fc_get_event_number(), + sizeof(lsrjt_event), + (char *)&lsrjt_event, + LPFC_NL_VENDOR_ID); + return; + } + if (ulp_status == IOSTAT_NPORT_BSY || + ulp_status == IOSTAT_FABRIC_BSY) { + fabric_event.event_type = FC_REG_FABRIC_EVENT; + if (ulp_status == IOSTAT_NPORT_BSY) + fabric_event.subcategory = LPFC_EVENT_PORT_BUSY; + else + fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY; + memcpy(fabric_event.wwpn, &ndlp->nlp_portname, + sizeof(struct lpfc_name)); + memcpy(fabric_event.wwnn, &ndlp->nlp_nodename, + sizeof(struct lpfc_name)); + fc_host_post_vendor_event(shost, + fc_get_event_number(), + sizeof(fabric_event), + (char *)&fabric_event, + LPFC_NL_VENDOR_ID); + return; + } + +} + +/** + * lpfc_send_els_event - Posts unsolicited els event + * @vport: Pointer to vport object. + * @ndlp: Pointer FC node object. + * @payload: ELS command code type. + * + * This function posts an event when there is an incoming + * unsolicited ELS command. + **/ +static void +lpfc_send_els_event(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp, + uint32_t *payload) +{ + struct lpfc_els_event_header *els_data = NULL; + struct lpfc_logo_event *logo_data = NULL; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + if (*payload == ELS_CMD_LOGO) { + logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL); + if (!logo_data) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0148 Failed to allocate memory " + "for LOGO event\n"); + return; + } + els_data = &logo_data->header; + } else { + els_data = kmalloc(sizeof(struct lpfc_els_event_header), + GFP_KERNEL); + if (!els_data) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0149 Failed to allocate memory " + "for ELS event\n"); + return; + } + } + els_data->event_type = FC_REG_ELS_EVENT; + switch (*payload) { + case ELS_CMD_PLOGI: + els_data->subcategory = LPFC_EVENT_PLOGI_RCV; + break; + case ELS_CMD_PRLO: + els_data->subcategory = LPFC_EVENT_PRLO_RCV; + break; + case ELS_CMD_ADISC: + els_data->subcategory = LPFC_EVENT_ADISC_RCV; + break; + case ELS_CMD_LOGO: + els_data->subcategory = LPFC_EVENT_LOGO_RCV; + /* Copy the WWPN in the LOGO payload */ + memcpy(logo_data->logo_wwpn, &payload[2], + sizeof(struct lpfc_name)); + break; + default: + kfree(els_data); + return; + } + memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name)); + memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name)); + if (*payload == ELS_CMD_LOGO) { + fc_host_post_vendor_event(shost, + fc_get_event_number(), + sizeof(struct lpfc_logo_event), + (char *)logo_data, + LPFC_NL_VENDOR_ID); + kfree(logo_data); + } else { + fc_host_post_vendor_event(shost, + fc_get_event_number(), + sizeof(struct lpfc_els_event_header), + (char *)els_data, + LPFC_NL_VENDOR_ID); + kfree(els_data); + } + + return; +} + + +DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types, + FC_FPIN_LI_EVT_TYPES_INIT); + +DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types, + FC_FPIN_DELI_EVT_TYPES_INIT); + +DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types, + FC_FPIN_CONGN_EVT_TYPES_INIT); + +DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm, + fc_fpin_congn_severity_types, + FC_FPIN_CONGN_SEVERITY_INIT); + + +/** + * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port + * @phba: Pointer to phba object. + * @wwnlist: Pointer to list of WWPNs in FPIN payload + * @cnt: count of WWPNs in FPIN payload + * + * This routine is called by LI and PC descriptors. + * Limit the number of WWPNs displayed to 6 log messages, 6 per log message + */ +static void +lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt) +{ + char buf[LPFC_FPIN_WWPN_LINE_SZ]; + __be64 wwn; + u64 wwpn; + int i, len; + int line = 0; + int wcnt = 0; + bool endit = false; + + len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:"); + for (i = 0; i < cnt; i++) { + /* Are we on the last WWPN */ + if (i == (cnt - 1)) + endit = true; + + /* Extract the next WWPN from the payload */ + wwn = *wwnlist++; + wwpn = be64_to_cpu(wwn); + len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len, + " %016llx", wwpn); + + /* Log a message if we are on the last WWPN + * or if we hit the max allowed per message. + */ + wcnt++; + if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) { + buf[len] = 0; + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "4686 %s\n", buf); + + /* Check if we reached the last WWPN */ + if (endit) + return; + + /* Limit the number of log message displayed per FPIN */ + line++; + if (line == LPFC_FPIN_WWPN_NUM_LINE) { + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "4687 %d WWPNs Truncated\n", + cnt - i - 1); + return; + } + + /* Start over with next log message */ + wcnt = 0; + len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, + "Additional WWPNs:"); + } + } +} + +/** + * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event. + * @phba: Pointer to phba object. + * @tlv: Pointer to the Link Integrity Notification Descriptor. + * + * This function processes a Link Integrity FPIN event by logging a message. + **/ +static void +lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv; + const char *li_evt_str; + u32 li_evt, cnt; + + li_evt = be16_to_cpu(li->event_type); + li_evt_str = lpfc_get_fpin_li_event_nm(li_evt); + cnt = be32_to_cpu(li->pname_count); + + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "4680 FPIN Link Integrity %s (x%x) " + "Detecting PN x%016llx Attached PN x%016llx " + "Duration %d mSecs Count %d Port Cnt %d\n", + li_evt_str, li_evt, + be64_to_cpu(li->detecting_wwpn), + be64_to_cpu(li->attached_wwpn), + be32_to_cpu(li->event_threshold), + be32_to_cpu(li->event_count), cnt); + + lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt); +} + +/** + * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event. + * @phba: Pointer to hba object. + * @tlv: Pointer to the Delivery Notification Descriptor TLV + * + * This function processes a Delivery FPIN event by logging a message. + **/ +static void +lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv; + const char *del_rsn_str; + u32 del_rsn; + __be32 *frame; + + del_rsn = be16_to_cpu(del->deli_reason_code); + del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn); + + /* Skip over desc_tag/desc_len header to payload */ + frame = (__be32 *)(del + 1); + + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "4681 FPIN Delivery %s (x%x) " + "Detecting PN x%016llx Attached PN x%016llx " + "DiscHdr0 x%08x " + "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x " + "DiscHdr4 x%08x DiscHdr5 x%08x\n", + del_rsn_str, del_rsn, + be64_to_cpu(del->detecting_wwpn), + be64_to_cpu(del->attached_wwpn), + be32_to_cpu(frame[0]), + be32_to_cpu(frame[1]), + be32_to_cpu(frame[2]), + be32_to_cpu(frame[3]), + be32_to_cpu(frame[4]), + be32_to_cpu(frame[5])); +} + +/** + * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event. + * @phba: Pointer to hba object. + * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV + * + * This function processes a Peer Congestion FPIN event by logging a message. + **/ +static void +lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv; + const char *pc_evt_str; + u32 pc_evt, cnt; + + pc_evt = be16_to_cpu(pc->event_type); + pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt); + cnt = be32_to_cpu(pc->pname_count); + + lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS, + "4684 FPIN Peer Congestion %s (x%x) " + "Duration %d mSecs " + "Detecting PN x%016llx Attached PN x%016llx " + "Impacted Port Cnt %d\n", + pc_evt_str, pc_evt, + be32_to_cpu(pc->event_period), + be64_to_cpu(pc->detecting_wwpn), + be64_to_cpu(pc->attached_wwpn), + cnt); + + lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt); +} + +/** + * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification + * @phba: Pointer to hba object. + * @tlv: Pointer to the Congestion Notification Descriptor TLV + * + * This function processes an FPIN Congestion Notifiction. The notification + * could be an Alarm or Warning. This routine feeds that data into driver's + * running congestion algorithm. It also processes the FPIN by + * logging a message. It returns 1 to indicate deliver this message + * to the upper layer or 0 to indicate don't deliver it. + **/ +static int +lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv) +{ + struct lpfc_cgn_info *cp; + struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv; + const char *cgn_evt_str; + u32 cgn_evt; + const char *cgn_sev_str; + u32 cgn_sev; + uint16_t value; + u32 crc; + bool nm_log = false; + int rc = 1; + + cgn_evt = be16_to_cpu(cgn->event_type); + cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt); + cgn_sev = cgn->severity; + cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev); + + /* The driver only takes action on a Credit Stall or Oversubscription + * event type to engage the IO algorithm. The driver prints an + * unmaskable message only for Lost Credit and Credit Stall. + * TODO: Still need to have definition of host action on clear, + * lost credit and device specific event types. + */ + switch (cgn_evt) { + case FPIN_CONGN_LOST_CREDIT: + nm_log = true; + break; + case FPIN_CONGN_CREDIT_STALL: + nm_log = true; + fallthrough; + case FPIN_CONGN_OVERSUBSCRIPTION: + if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION) + nm_log = false; + switch (cgn_sev) { + case FPIN_CONGN_SEVERITY_ERROR: + /* Take action here for an Alarm event */ + if (phba->cmf_active_mode != LPFC_CFG_OFF) { + if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) { + /* Track of alarm cnt for SYNC_WQE */ + atomic_inc(&phba->cgn_sync_alarm_cnt); + } + /* Track alarm cnt for cgn_info regardless + * of whether CMF is configured for Signals + * or FPINs. + */ + atomic_inc(&phba->cgn_fabric_alarm_cnt); + goto cleanup; + } + break; + case FPIN_CONGN_SEVERITY_WARNING: + /* Take action here for a Warning event */ + if (phba->cmf_active_mode != LPFC_CFG_OFF) { + if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) { + /* Track of warning cnt for SYNC_WQE */ + atomic_inc(&phba->cgn_sync_warn_cnt); + } + /* Track warning cnt and freq for cgn_info + * regardless of whether CMF is configured for + * Signals or FPINs. + */ + atomic_inc(&phba->cgn_fabric_warn_cnt); +cleanup: + /* Save frequency in ms */ + phba->cgn_fpin_frequency = + be32_to_cpu(cgn->event_period); + value = phba->cgn_fpin_frequency; + if (phba->cgn_i) { + cp = (struct lpfc_cgn_info *) + phba->cgn_i->virt; + cp->cgn_alarm_freq = + cpu_to_le16(value); + cp->cgn_warn_freq = + cpu_to_le16(value); + crc = lpfc_cgn_calc_crc32 + (cp, + LPFC_CGN_INFO_SZ, + LPFC_CGN_CRC32_SEED); + cp->cgn_info_crc = cpu_to_le32(crc); + } + + /* Don't deliver to upper layer since + * driver took action on this tlv. + */ + rc = 0; + } + break; + } + break; + } + + /* Change the log level to unmaskable for the following event types. */ + lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO), + LOG_CGN_MGMT | LOG_ELS, + "4683 FPIN CONGESTION %s type %s (x%x) Event " + "Duration %d mSecs\n", + cgn_sev_str, cgn_evt_str, cgn_evt, + be32_to_cpu(cgn->event_period)); + return rc; +} + +void +lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length) +{ + struct lpfc_hba *phba = vport->phba; + struct fc_els_fpin *fpin = (struct fc_els_fpin *)p; + struct fc_tlv_desc *tlv, *first_tlv, *current_tlv; + const char *dtag_nm; + int desc_cnt = 0, bytes_remain, cnt; + u32 dtag, deliver = 0; + int len; + + /* FPINs handled only if we are in the right discovery state */ + if (vport->port_state < LPFC_DISC_AUTH) + return; + + /* make sure there is the full fpin header */ + if (fpin_length < sizeof(struct fc_els_fpin)) + return; + + /* Sanity check descriptor length. The desc_len value does not + * include space for the ELS command and the desc_len fields. + */ + len = be32_to_cpu(fpin->desc_len); + if (fpin_length < len + sizeof(struct fc_els_fpin)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, + "4671 Bad ELS FPIN length %d: %d\n", + len, fpin_length); + return; + } + + tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; + first_tlv = tlv; + bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc); + bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); + + /* process each descriptor separately */ + while (bytes_remain >= FC_TLV_DESC_HDR_SZ && + bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { + dtag = be32_to_cpu(tlv->desc_tag); + switch (dtag) { + case ELS_DTAG_LNK_INTEGRITY: + lpfc_els_rcv_fpin_li(phba, tlv); + deliver = 1; + break; + case ELS_DTAG_DELIVERY: + lpfc_els_rcv_fpin_del(phba, tlv); + deliver = 1; + break; + case ELS_DTAG_PEER_CONGEST: + lpfc_els_rcv_fpin_peer_cgn(phba, tlv); + deliver = 1; + break; + case ELS_DTAG_CONGESTION: + deliver = lpfc_els_rcv_fpin_cgn(phba, tlv); + break; + default: + dtag_nm = lpfc_get_tlv_dtag_nm(dtag); + lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, + "4678 unknown FPIN descriptor[%d]: " + "tag x%x (%s)\n", + desc_cnt, dtag, dtag_nm); + + /* If descriptor is bad, drop the rest of the data */ + return; + } + lpfc_cgn_update_stat(phba, dtag); + cnt = be32_to_cpu(tlv->desc_len); + + /* Sanity check descriptor length. The desc_len value does not + * include space for the desc_tag and the desc_len fields. + */ + len -= (cnt + sizeof(struct fc_tlv_desc)); + if (len < 0) { + dtag_nm = lpfc_get_tlv_dtag_nm(dtag); + lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT, + "4672 Bad FPIN descriptor TLV length " + "%d: %d %d %s\n", + cnt, len, fpin_length, dtag_nm); + return; + } + + current_tlv = tlv; + bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); + tlv = fc_tlv_next_desc(tlv); + + /* Format payload such that the FPIN delivered to the + * upper layer is a single descriptor FPIN. + */ + if (desc_cnt) + memcpy(first_tlv, current_tlv, + (cnt + sizeof(struct fc_els_fpin))); + + /* Adjust the length so that it only reflects a + * single descriptor FPIN. + */ + fpin_length = cnt + sizeof(struct fc_els_fpin); + fpin->desc_len = cpu_to_be32(fpin_length); + fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */ + + /* Send every descriptor individually to the upper layer */ + if (deliver) + fc_host_fpin_rcv(lpfc_shost_from_vport(vport), + fpin_length, (char *)fpin); + desc_cnt++; + } +} + +/** + * lpfc_els_unsol_buffer - Process an unsolicited event data buffer + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @vport: pointer to a host virtual N_Port data structure. + * @elsiocb: pointer to lpfc els command iocb data structure. + * + * This routine is used for processing the IOCB associated with a unsolicited + * event. It first determines whether there is an existing ndlp that matches + * the DID from the unsolicited IOCB. If not, it will create a new one with + * the DID from the unsolicited IOCB. The ELS command from the unsolicited + * IOCB is then used to invoke the proper routine and to set up proper state + * of the discovery state machine. + **/ +static void +lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb) +{ + struct lpfc_nodelist *ndlp; + struct ls_rjt stat; + u32 *payload, payload_len; + u32 cmd = 0, did = 0, newnode, status = 0; + uint8_t rjt_exp, rjt_err = 0, init_link = 0; + struct lpfc_wcqe_complete *wcqe_cmpl = NULL; + LPFC_MBOXQ_t *mbox; + + if (!vport || !elsiocb->cmd_dmabuf) + goto dropit; + + newnode = 0; + wcqe_cmpl = &elsiocb->wcqe_cmpl; + payload = elsiocb->cmd_dmabuf->virt; + if (phba->sli_rev == LPFC_SLI_REV4) + payload_len = wcqe_cmpl->total_data_placed; + else + payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len; + status = get_job_ulpstatus(phba, elsiocb); + cmd = *payload; + if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0) + lpfc_sli3_post_buffer(phba, pring, 1); + + did = get_job_els_rsp64_did(phba, elsiocb); + if (status) { + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV Unsol ELS: status:x%x/x%x did:x%x", + status, get_job_word4(phba, elsiocb), did); + goto dropit; + } + + /* Check to see if link went down during discovery */ + if (lpfc_els_chk_latt(vport)) + goto dropit; + + /* Ignore traffic received during vport shutdown. */ + if (vport->load_flag & FC_UNLOADING) + goto dropit; + + /* If NPort discovery is delayed drop incoming ELS */ + if ((vport->fc_flag & FC_DISC_DELAYED) && + (cmd != ELS_CMD_PLOGI)) + goto dropit; + + ndlp = lpfc_findnode_did(vport, did); + if (!ndlp) { + /* Cannot find existing Fabric ndlp, so allocate a new one */ + ndlp = lpfc_nlp_init(vport, did); + if (!ndlp) + goto dropit; + lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); + newnode = 1; + if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) + ndlp->nlp_type |= NLP_FABRIC; + } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) { + lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); + newnode = 1; + } + + phba->fc_stat.elsRcvFrame++; + + /* + * Do not process any unsolicited ELS commands + * if the ndlp is in DEV_LOSS + */ + spin_lock_irq(&ndlp->lock); + if (ndlp->nlp_flag & NLP_IN_DEV_LOSS) { + spin_unlock_irq(&ndlp->lock); + if (newnode) + lpfc_nlp_put(ndlp); + goto dropit; + } + spin_unlock_irq(&ndlp->lock); + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) + goto dropit; + elsiocb->vport = vport; + + if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) { + cmd &= ELS_CMD_MASK; + } + /* ELS command <elsCmd> received from NPORT <did> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0112 ELS command x%x received from NPORT x%x " + "refcnt %d Data: x%x x%x x%x x%x\n", + cmd, did, kref_read(&ndlp->kref), vport->port_state, + vport->fc_flag, vport->fc_myDID, vport->fc_prevDID); + + /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */ + if ((vport->port_state < LPFC_FABRIC_CFG_LINK) && + (cmd != ELS_CMD_FLOGI) && + !((cmd == ELS_CMD_PLOGI) && (vport->fc_flag & FC_PT2PT))) { + rjt_err = LSRJT_LOGICAL_BSY; + rjt_exp = LSEXP_NOTHING_MORE; + goto lsrjt; + } + + switch (cmd) { + case ELS_CMD_PLOGI: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV PLOGI: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvPLOGI++; + ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp); + if (phba->sli_rev == LPFC_SLI_REV4 && + (phba->pport->fc_flag & FC_PT2PT)) { + vport->fc_prevDID = vport->fc_myDID; + /* Our DID needs to be updated before registering + * the vfi. This is done in lpfc_rcv_plogi but + * that is called after the reg_vfi. + */ + vport->fc_myDID = + bf_get(els_rsp64_sid, + &elsiocb->wqe.xmit_els_rsp); + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "3312 Remote port assigned DID x%x " + "%x\n", vport->fc_myDID, + vport->fc_prevDID); + } + + lpfc_send_els_event(vport, ndlp, payload); + + /* If Nport discovery is delayed, reject PLOGIs */ + if (vport->fc_flag & FC_DISC_DELAYED) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + + if (vport->port_state < LPFC_DISC_AUTH) { + if (!(phba->pport->fc_flag & FC_PT2PT) || + (phba->pport->fc_flag & FC_PT2PT_PLOGI)) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + } + + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_TARGET_REMOVE; + spin_unlock_irq(&ndlp->lock); + + lpfc_disc_state_machine(vport, ndlp, elsiocb, + NLP_EVT_RCV_PLOGI); + + break; + case ELS_CMD_FLOGI: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV FLOGI: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvFLOGI++; + + /* If the driver believes fabric discovery is done and is ready, + * bounce the link. There is some descrepancy. + */ + if (vport->port_state >= LPFC_LOCAL_CFG_LINK && + vport->fc_flag & FC_PT2PT && + vport->rcv_flogi_cnt >= 1) { + rjt_err = LSRJT_LOGICAL_BSY; + rjt_exp = LSEXP_NOTHING_MORE; + init_link++; + goto lsrjt; + } + + lpfc_els_rcv_flogi(vport, elsiocb, ndlp); + /* retain node if our response is deferred */ + if (phba->defer_flogi_acc_flag) + break; + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_LOGO: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV LOGO: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvLOGO++; + lpfc_send_els_event(vport, ndlp, payload); + if (vport->port_state < LPFC_DISC_AUTH) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_PRLO: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV PRLO: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvPRLO++; + lpfc_send_els_event(vport, ndlp, payload); + if (vport->port_state < LPFC_DISC_AUTH) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO); + break; + case ELS_CMD_LCB: + phba->fc_stat.elsRcvLCB++; + lpfc_els_rcv_lcb(vport, elsiocb, ndlp); + break; + case ELS_CMD_RDP: + phba->fc_stat.elsRcvRDP++; + lpfc_els_rcv_rdp(vport, elsiocb, ndlp); + break; + case ELS_CMD_RSCN: + phba->fc_stat.elsRcvRSCN++; + lpfc_els_rcv_rscn(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_ADISC: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV ADISC: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + lpfc_send_els_event(vport, ndlp, payload); + phba->fc_stat.elsRcvADISC++; + if (vport->port_state < LPFC_DISC_AUTH) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(vport, ndlp, elsiocb, + NLP_EVT_RCV_ADISC); + break; + case ELS_CMD_PDISC: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV PDISC: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvPDISC++; + if (vport->port_state < LPFC_DISC_AUTH) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(vport, ndlp, elsiocb, + NLP_EVT_RCV_PDISC); + break; + case ELS_CMD_FARPR: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV FARPR: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvFARPR++; + lpfc_els_rcv_farpr(vport, elsiocb, ndlp); + break; + case ELS_CMD_FARP: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV FARP: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvFARP++; + lpfc_els_rcv_farp(vport, elsiocb, ndlp); + break; + case ELS_CMD_FAN: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV FAN: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvFAN++; + lpfc_els_rcv_fan(vport, elsiocb, ndlp); + break; + case ELS_CMD_PRLI: + case ELS_CMD_NVMEPRLI: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV PRLI: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvPRLI++; + if ((vport->port_state < LPFC_DISC_AUTH) && + (vport->fc_flag & FC_FABRIC)) { + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_NOTHING_MORE; + break; + } + lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI); + break; + case ELS_CMD_LIRR: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV LIRR: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvLIRR++; + lpfc_els_rcv_lirr(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_RLS: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RLS: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvRLS++; + lpfc_els_rcv_rls(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_RPL: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RPL: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvRPL++; + lpfc_els_rcv_rpl(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_RNID: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RNID: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvRNID++; + lpfc_els_rcv_rnid(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_RTV: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RTV: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + phba->fc_stat.elsRcvRTV++; + lpfc_els_rcv_rtv(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_RRQ: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV RRQ: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvRRQ++; + lpfc_els_rcv_rrq(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_ECHO: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV ECHO: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + phba->fc_stat.elsRcvECHO++; + lpfc_els_rcv_echo(vport, elsiocb, ndlp); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + case ELS_CMD_REC: + /* receive this due to exchange closed */ + rjt_err = LSRJT_UNABLE_TPC; + rjt_exp = LSEXP_INVALID_OX_RX; + break; + case ELS_CMD_FPIN: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV FPIN: did:x%x/ste:x%x flg:x%x", + did, vport->port_state, ndlp->nlp_flag); + + lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload, + payload_len); + + /* There are no replies, so no rjt codes */ + break; + case ELS_CMD_EDC: + lpfc_els_rcv_edc(vport, elsiocb, ndlp); + break; + case ELS_CMD_RDF: + phba->fc_stat.elsRcvRDF++; + /* Accept RDF only from fabric controller */ + if (did != Fabric_Cntl_DID) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, + "1115 Received RDF from invalid DID " + "x%x\n", did); + rjt_err = LSRJT_PROTOCOL_ERR; + rjt_exp = LSEXP_NOTHING_MORE; + goto lsrjt; + } + + lpfc_els_rcv_rdf(vport, elsiocb, ndlp); + break; + default: + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL, + "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x", + cmd, did, vport->port_state); + + /* Unsupported ELS command, reject */ + rjt_err = LSRJT_CMD_UNSUPPORTED; + rjt_exp = LSEXP_NOTHING_MORE; + + /* Unknown ELS command <elsCmd> received from NPORT <did> */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0115 Unknown ELS command x%x " + "received from NPORT x%x\n", cmd, did); + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + break; + } + +lsrjt: + /* check if need to LS_RJT received ELS cmd */ + if (rjt_err) { + memset(&stat, 0, sizeof(stat)); + stat.un.b.lsRjtRsnCode = rjt_err; + stat.un.b.lsRjtRsnCodeExp = rjt_exp; + lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp, + NULL); + /* Remove the reference from above for new nodes. */ + if (newnode) + lpfc_disc_state_machine(vport, ndlp, NULL, + NLP_EVT_DEVICE_RM); + } + + /* Release the reference on this elsiocb, not the ndlp. */ + lpfc_nlp_put(elsiocb->ndlp); + elsiocb->ndlp = NULL; + + /* Special case. Driver received an unsolicited command that + * unsupportable given the driver's current state. Reset the + * link and start over. + */ + if (init_link) { + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return; + lpfc_linkdown(phba); + lpfc_init_link(phba, mbox, + phba->cfg_topology, + phba->cfg_link_speed); + mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->vport = vport; + if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) == + MBX_NOT_FINISHED) + mempool_free(mbox, phba->mbox_mem_pool); + } + + return; + +dropit: + if (vport && !(vport->load_flag & FC_UNLOADING)) + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0111 Dropping received ELS cmd " + "Data: x%x x%x x%x x%x\n", + cmd, status, get_job_word4(phba, elsiocb), did); + + phba->fc_stat.elsRcvDrop++; +} + +/** + * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring + * @phba: pointer to lpfc hba data structure. + * @pring: pointer to a SLI ring. + * @elsiocb: pointer to lpfc els iocb data structure. + * + * This routine is used to process an unsolicited event received from a SLI + * (Service Level Interface) ring. The actual processing of the data buffer + * associated with the unsolicited event is done by invoking the routine + * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the + * SLI ring on which the unsolicited event was received. + **/ +void +lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *elsiocb) +{ + struct lpfc_vport *vport = elsiocb->vport; + u32 ulp_command, status, parameter, bde_count = 0; + IOCB_t *icmd; + struct lpfc_wcqe_complete *wcqe_cmpl = NULL; + struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf; + struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf; + dma_addr_t paddr; + + elsiocb->cmd_dmabuf = NULL; + elsiocb->rsp_dmabuf = NULL; + elsiocb->bpl_dmabuf = NULL; + + wcqe_cmpl = &elsiocb->wcqe_cmpl; + ulp_command = get_job_cmnd(phba, elsiocb); + status = get_job_ulpstatus(phba, elsiocb); + parameter = get_job_word4(phba, elsiocb); + if (phba->sli_rev == LPFC_SLI_REV4) + bde_count = wcqe_cmpl->word3; + else + bde_count = elsiocb->iocb.ulpBdeCount; + + if (status == IOSTAT_NEED_BUFFER) { + lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); + } else if (status == IOSTAT_LOCAL_REJECT && + (parameter & IOERR_PARAM_MASK) == + IOERR_RCV_BUFFER_WAITING) { + phba->fc_stat.NoRcvBuf++; + /* Not enough posted buffers; Try posting more buffers */ + if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) + lpfc_sli3_post_buffer(phba, pring, 0); + return; + } + + if (phba->sli_rev == LPFC_SLI_REV3) { + icmd = &elsiocb->iocb; + if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && + (ulp_command == CMD_IOCB_RCV_ELS64_CX || + ulp_command == CMD_IOCB_RCV_SEQ64_CX)) { + if (icmd->unsli3.rcvsli3.vpi == 0xffff) + vport = phba->pport; + else + vport = lpfc_find_vport_by_vpid(phba, + icmd->unsli3.rcvsli3.vpi); + } + } + + /* If there are no BDEs associated + * with this IOCB, there is nothing to do. + */ + if (bde_count == 0) + return; + + /* Account for SLI2 or SLI3 and later unsolicited buffering */ + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { + elsiocb->cmd_dmabuf = bdeBuf1; + if (bde_count == 2) + elsiocb->bpl_dmabuf = bdeBuf2; + } else { + icmd = &elsiocb->iocb; + paddr = getPaddr(icmd->un.cont64[0].addrHigh, + icmd->un.cont64[0].addrLow); + elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, + paddr); + if (bde_count == 2) { + paddr = getPaddr(icmd->un.cont64[1].addrHigh, + icmd->un.cont64[1].addrLow); + elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba, + pring, + paddr); + } + } + + lpfc_els_unsol_buffer(phba, pring, vport, elsiocb); + /* + * The different unsolicited event handlers would tell us + * if they are done with "mp" by setting cmd_dmabuf to NULL. + */ + if (elsiocb->cmd_dmabuf) { + lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf); + elsiocb->cmd_dmabuf = NULL; + } + + if (elsiocb->bpl_dmabuf) { + lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf); + elsiocb->bpl_dmabuf = NULL; + } + +} + +static void +lpfc_start_fdmi(struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp; + + /* If this is the first time, allocate an ndlp and initialize + * it. Otherwise, make sure the node is enabled and then do the + * login. + */ + ndlp = lpfc_findnode_did(vport, FDMI_DID); + if (!ndlp) { + ndlp = lpfc_nlp_init(vport, FDMI_DID); + if (ndlp) { + ndlp->nlp_type |= NLP_FABRIC; + } else { + return; + } + } + + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0); +} + +/** + * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr + * @phba: pointer to lpfc hba data structure. + * @vport: pointer to a virtual N_Port data structure. + * + * This routine issues a Port Login (PLOGI) to the Name Server with + * State Change Request (SCR) for a @vport. This routine will create an + * ndlp for the Name Server associated to the @vport if such node does + * not already exist. The PLOGI to Name Server is issued by invoking the + * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface + * (FDMI) is configured to the @vport, a FDMI node will be created and + * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine. + **/ +void +lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport) +{ + struct lpfc_nodelist *ndlp; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + + /* + * If lpfc_delay_discovery parameter is set and the clean address + * bit is cleared and fc fabric parameters chenged, delay FC NPort + * discovery. + */ + spin_lock_irq(shost->host_lock); + if (vport->fc_flag & FC_DISC_DELAYED) { + spin_unlock_irq(shost->host_lock); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "3334 Delay fc port discovery for %d secs\n", + phba->fc_ratov); + mod_timer(&vport->delayed_disc_tmo, + jiffies + msecs_to_jiffies(1000 * phba->fc_ratov)); + return; + } + spin_unlock_irq(shost->host_lock); + + ndlp = lpfc_findnode_did(vport, NameServer_DID); + if (!ndlp) { + ndlp = lpfc_nlp_init(vport, NameServer_DID); + if (!ndlp) { + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + lpfc_disc_start(vport); + return; + } + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0251 NameServer login: no memory\n"); + return; + } + } + + ndlp->nlp_type |= NLP_FABRIC; + + lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE); + + if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) { + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0252 Cannot issue NameServer login\n"); + return; + } + + if ((phba->cfg_enable_SmartSAN || + (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) && + (vport->load_flag & FC_ALLOW_FDMI)) + lpfc_start_fdmi(vport); +} + +/** + * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport + * @phba: pointer to lpfc hba data structure. + * @pmb: pointer to the driver internal queue element for mailbox command. + * + * This routine is the completion callback function to register new vport + * mailbox command. If the new vport mailbox command completes successfully, + * the fabric registration login shall be performed on physical port (the + * new vport created is actually a physical port, with VPI 0) or the port + * login to Name Server for State Change Request (SCR) will be performed + * on virtual port (real virtual port, with VPI greater than 0). + **/ +static void +lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + struct lpfc_vport *vport = pmb->vport; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp = pmb->ctx_ndlp; + MAILBOX_t *mb = &pmb->u.mb; + int rc; + + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + + if (mb->mbxStatus) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0915 Register VPI failed : Status: x%x" + " upd bit: x%x \n", mb->mbxStatus, + mb->un.varRegVpi.upd); + if (phba->sli_rev == LPFC_SLI_REV4 && + mb->un.varRegVpi.upd) + goto mbox_err_exit ; + + switch (mb->mbxStatus) { + case 0x11: /* unsupported feature */ + case 0x9603: /* max_vpi exceeded */ + case 0x9602: /* Link event since CLEAR_LA */ + /* giving up on vport registration */ + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + break; + /* If reg_vpi fail with invalid VPI status, re-init VPI */ + case 0x20: + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + lpfc_init_vpi(phba, pmb, vport->vpi); + pmb->vport = vport; + pmb->mbox_cmpl = lpfc_init_vpi_cmpl; + rc = lpfc_sli_issue_mbox(phba, pmb, + MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_vlog(vport, KERN_ERR, + LOG_TRACE_EVENT, + "2732 Failed to issue INIT_VPI" + " mailbox command\n"); + } else { + lpfc_nlp_put(ndlp); + return; + } + fallthrough; + default: + /* Try to recover from this error */ + if (phba->sli_rev == LPFC_SLI_REV4) + lpfc_sli4_unreg_all_rpis(vport); + lpfc_mbx_unreg_vpi(vport); + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + if (mb->mbxStatus == MBX_NOT_FINISHED) + break; + if ((vport->port_type == LPFC_PHYSICAL_PORT) && + !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) { + if (phba->sli_rev == LPFC_SLI_REV4) + lpfc_issue_init_vfi(vport); + else + lpfc_initial_flogi(vport); + } else { + lpfc_initial_fdisc(vport); + } + break; + } + } else { + spin_lock_irq(shost->host_lock); + vport->vpi_state |= LPFC_VPI_REGISTERED; + spin_unlock_irq(shost->host_lock); + if (vport == phba->pport) { + if (phba->sli_rev < LPFC_SLI_REV4) + lpfc_issue_fabric_reglogin(vport); + else { + /* + * If the physical port is instantiated using + * FDISC, do not start vport discovery. + */ + if (vport->port_state != LPFC_FDISC) + lpfc_start_fdiscs(phba); + lpfc_do_scr_ns_plogi(phba, vport); + } + } else { + lpfc_do_scr_ns_plogi(phba, vport); + } + } +mbox_err_exit: + /* Now, we decrement the ndlp reference count held for this + * callback function + */ + lpfc_nlp_put(ndlp); + + mempool_free(pmb, phba->mbox_mem_pool); + return; +} + +/** + * lpfc_register_new_vport - Register a new vport with a HBA + * @phba: pointer to lpfc hba data structure. + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine registers the @vport as a new virtual port with a HBA. + * It is done through a registering vpi mailbox command. + **/ +void +lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp) +{ + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + LPFC_MBOXQ_t *mbox; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (mbox) { + lpfc_reg_vpi(vport, mbox); + mbox->vport = vport; + mbox->ctx_ndlp = lpfc_nlp_get(ndlp); + if (!mbox->ctx_ndlp) { + mempool_free(mbox, phba->mbox_mem_pool); + goto mbox_err_exit; + } + + mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport; + if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) + == MBX_NOT_FINISHED) { + /* mailbox command not success, decrement ndlp + * reference count for this command + */ + lpfc_nlp_put(ndlp); + mempool_free(mbox, phba->mbox_mem_pool); + + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0253 Register VPI: Can't send mbox\n"); + goto mbox_err_exit; + } + } else { + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0254 Register VPI: no memory\n"); + goto mbox_err_exit; + } + return; + +mbox_err_exit: + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + return; +} + +/** + * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer + * @phba: pointer to lpfc hba data structure. + * + * This routine cancels the retry delay timers to all the vports. + **/ +void +lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba) +{ + struct lpfc_vport **vports; + struct lpfc_nodelist *ndlp; + uint32_t link_state; + int i; + + /* Treat this failure as linkdown for all vports */ + link_state = phba->link_state; + lpfc_linkdown(phba); + phba->link_state = link_state; + + vports = lpfc_create_vport_work_array(phba); + + if (vports) { + for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { + ndlp = lpfc_findnode_did(vports[i], Fabric_DID); + if (ndlp) + lpfc_cancel_retry_delay_tmo(vports[i], ndlp); + lpfc_els_flush_cmd(vports[i]); + } + lpfc_destroy_vport_work_array(phba, vports); + } +} + +/** + * lpfc_retry_pport_discovery - Start timer to retry FLOGI. + * @phba: pointer to lpfc hba data structure. + * + * This routine abort all pending discovery commands and + * start a timer to retry FLOGI for the physical port + * discovery. + **/ +void +lpfc_retry_pport_discovery(struct lpfc_hba *phba) +{ + struct lpfc_nodelist *ndlp; + + /* Cancel the all vports retry delay retry timers */ + lpfc_cancel_all_vport_retry_delay_timer(phba); + + /* If fabric require FLOGI, then re-instantiate physical login */ + ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); + if (!ndlp) + return; + + mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000)); + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_DELAY_TMO; + spin_unlock_irq(&ndlp->lock); + ndlp->nlp_last_elscmd = ELS_CMD_FLOGI; + phba->pport->port_state = LPFC_FLOGI; + return; +} + +/** + * lpfc_fabric_login_reqd - Check if FLOGI required. + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to FDISC command iocb. + * @rspiocb: pointer to FDISC response iocb. + * + * This routine checks if a FLOGI is reguired for FDISC + * to succeed. + **/ +static int +lpfc_fabric_login_reqd(struct lpfc_hba *phba, + struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + + if (ulp_status != IOSTAT_FABRIC_RJT || + ulp_word4 != RJT_LOGIN_REQUIRED) + return 0; + else + return 1; +} + +/** + * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function to a Fabric Discover + * (FDISC) ELS command. Since all the FDISC ELS commands are issued + * single threaded, each FDISC completion callback function will reset + * the discovery timer for all vports such that the timers will not get + * unnecessary timeout. The function checks the FDISC IOCB status. If error + * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the + * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID + * assigned to the vport has been changed with the completion of the FDISC + * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index) + * are unregistered from the HBA, and then the lpfc_register_new_vport() + * routine is invoked to register new vport with the HBA. Otherwise, the + * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name + * Server for State Change Request (SCR). + **/ +static void +lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + struct lpfc_nodelist *np; + struct lpfc_nodelist *next_np; + struct lpfc_iocbq *piocb; + struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp; + struct serv_parm *sp; + uint8_t fabric_param_changed; + u32 ulp_status, ulp_word4; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "0123 FDISC completes. x%x/x%x prevDID: x%x\n", + ulp_status, ulp_word4, + vport->fc_prevDID); + /* Since all FDISCs are being single threaded, we + * must reset the discovery timer for ALL vports + * waiting to send FDISC when one completes. + */ + list_for_each_entry(piocb, &phba->fabric_iocb_list, list) { + lpfc_set_disctmo(piocb->vport); + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "FDISC cmpl: status:x%x/x%x prevdid:x%x", + ulp_status, ulp_word4, vport->fc_prevDID); + + if (ulp_status) { + + if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) { + lpfc_retry_pport_discovery(phba); + goto out; + } + + /* Check for retry */ + if (lpfc_els_retry(phba, cmdiocb, rspiocb)) + goto out; + /* FDISC failed */ + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0126 FDISC failed. (x%x/x%x)\n", + ulp_status, ulp_word4); + goto fdisc_failed; + } + + lpfc_check_nlp_post_devloss(vport, ndlp); + + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_VPORT_CVL_RCVD; + vport->fc_flag &= ~FC_VPORT_LOGO_RCVD; + vport->fc_flag |= FC_FABRIC; + if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP) + vport->fc_flag |= FC_PUBLIC_LOOP; + spin_unlock_irq(shost->host_lock); + + vport->fc_myDID = ulp_word4 & Mask_DID; + lpfc_vport_set_state(vport, FC_VPORT_ACTIVE); + prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + sp = prsp->virt + sizeof(uint32_t); + fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp); + memcpy(&vport->fabric_portname, &sp->portName, + sizeof(struct lpfc_name)); + memcpy(&vport->fabric_nodename, &sp->nodeName, + sizeof(struct lpfc_name)); + if (fabric_param_changed && + !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { + /* If our NportID changed, we need to ensure all + * remaining NPORTs get unreg_login'ed so we can + * issue unreg_vpi. + */ + list_for_each_entry_safe(np, next_np, + &vport->fc_nodes, nlp_listp) { + if ((np->nlp_state != NLP_STE_NPR_NODE) || + !(np->nlp_flag & NLP_NPR_ADISC)) + continue; + spin_lock_irq(&ndlp->lock); + np->nlp_flag &= ~NLP_NPR_ADISC; + spin_unlock_irq(&ndlp->lock); + lpfc_unreg_rpi(vport, np); + } + lpfc_cleanup_pending_mbox(vport); + + if (phba->sli_rev == LPFC_SLI_REV4) + lpfc_sli4_unreg_all_rpis(vport); + + lpfc_mbx_unreg_vpi(vport); + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + if (phba->sli_rev == LPFC_SLI_REV4) + vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; + else + vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG; + spin_unlock_irq(shost->host_lock); + } else if ((phba->sli_rev == LPFC_SLI_REV4) && + !(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) { + /* + * Driver needs to re-reg VPI in order for f/w + * to update the MAC address. + */ + lpfc_register_new_vport(phba, vport, ndlp); + lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); + goto out; + } + + if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI) + lpfc_issue_init_vpi(vport); + else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) + lpfc_register_new_vport(phba, vport, ndlp); + else + lpfc_do_scr_ns_plogi(phba, vport); + + /* The FDISC completed successfully. Move the fabric ndlp to + * UNMAPPED state and register with the transport. + */ + lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); + goto out; + +fdisc_failed: + if (vport->fc_vport && + (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS)) + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + /* Cancel discovery timer */ + lpfc_can_disctmo(vport); +out: + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +/** + * lpfc_issue_els_fdisc - Issue a fdisc iocb command + * @vport: pointer to a virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * @retry: number of retries to the command IOCB. + * + * This routine prepares and issues a Fabric Discover (FDISC) IOCB to + * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb() + * routine to issue the IOCB, which makes sure only one outstanding fabric + * IOCB will be sent off HBA at any given time. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the FDISC ELS command. + * + * Return code + * 0 - Successfully issued fdisc iocb command + * 1 - Failed to issue fdisc iocb command + **/ +static int +lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, + uint8_t retry) +{ + struct lpfc_hba *phba = vport->phba; + IOCB_t *icmd; + union lpfc_wqe128 *wqe = NULL; + struct lpfc_iocbq *elsiocb; + struct serv_parm *sp; + uint8_t *pcmd; + uint16_t cmdsize; + int did = ndlp->nlp_DID; + int rc; + + vport->port_state = LPFC_FDISC; + vport->fc_myDID = 0; + cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm)); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did, + ELS_CMD_FDISC); + if (!elsiocb) { + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0255 Issue FDISC: no IOCB\n"); + return 1; + } + + if (phba->sli_rev == LPFC_SLI_REV4) { + wqe = &elsiocb->wqe; + bf_set(els_req64_sid, &wqe->els_req, 0); + bf_set(els_req64_sp, &wqe->els_req, 1); + } else { + icmd = &elsiocb->iocb; + icmd->un.elsreq64.myID = 0; + icmd->un.elsreq64.fl = 1; + icmd->ulpCt_h = 1; + icmd->ulpCt_l = 0; + } + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_FDISC; + pcmd += sizeof(uint32_t); /* CSP Word 1 */ + memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm)); + sp = (struct serv_parm *) pcmd; + /* Setup CSPs accordingly for Fabric */ + sp->cmn.e_d_tov = 0; + sp->cmn.w2.r_a_tov = 0; + sp->cmn.virtual_fabric_support = 0; + sp->cls1.classValid = 0; + sp->cls2.seqDelivery = 1; + sp->cls3.seqDelivery = 1; + + pcmd += sizeof(uint32_t); /* CSP Word 2 */ + pcmd += sizeof(uint32_t); /* CSP Word 3 */ + pcmd += sizeof(uint32_t); /* CSP Word 4 */ + pcmd += sizeof(uint32_t); /* Port Name */ + memcpy(pcmd, &vport->fc_portname, 8); + pcmd += sizeof(uint32_t); /* Node Name */ + pcmd += sizeof(uint32_t); /* Node Name */ + memcpy(pcmd, &vport->fc_nodename, 8); + sp->cmn.valid_vendor_ver_level = 0; + memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion)); + lpfc_set_disctmo(vport); + + phba->fc_stat.elsXmitFDISC++; + elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc; + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue FDISC: did:x%x", + did, 0, 0); + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) + goto err_out; + + rc = lpfc_issue_fabric_iocb(phba, elsiocb); + if (rc == IOCB_ERROR) { + lpfc_nlp_put(ndlp); + goto err_out; + } + + lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING); + return 0; + + err_out: + lpfc_els_free_iocb(phba, elsiocb); + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, + "0256 Issue FDISC: Cannot send IOCB\n"); + return 1; +} + +/** + * lpfc_cmpl_els_npiv_logo - Completion function with vport logo + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the completion callback function to the issuing of a LOGO + * ELS command off a vport. It frees the command IOCB and then decrement the + * reference count held on ndlp for this completion function, indicating that + * the reference to the ndlp is no long needed. Note that the + * lpfc_els_free_iocb() routine decrements the ndlp reference held for this + * callback function and an additional explicit ndlp reference decrementation + * will trigger the actual release of the ndlp. + **/ +static void +lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + IOCB_t *irsp; + struct lpfc_nodelist *ndlp; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + u32 ulp_status, ulp_word4, did, tmo; + + ndlp = cmdiocb->ndlp; + + ulp_status = get_job_ulpstatus(phba, rspiocb); + ulp_word4 = get_job_word4(phba, rspiocb); + + if (phba->sli_rev == LPFC_SLI_REV4) { + did = get_job_els_rsp64_did(phba, cmdiocb); + tmo = get_wqe_tmo(cmdiocb); + } else { + irsp = &rspiocb->iocb; + did = get_job_els_rsp64_did(phba, rspiocb); + tmo = irsp->ulpTimeout; + } + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "LOGO npiv cmpl: status:x%x/x%x did:x%x", + ulp_status, ulp_word4, did); + + /* NPIV LOGO completes to NPort <nlp_DID> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "2928 NPIV LOGO completes to NPort x%x " + "Data: x%x x%x x%x x%x x%x x%x x%x\n", + ndlp->nlp_DID, ulp_status, ulp_word4, + tmo, vport->num_disc_nodes, + kref_read(&ndlp->kref), ndlp->nlp_flag, + ndlp->fc4_xpt_flags); + + if (ulp_status == IOSTAT_SUCCESS) { + spin_lock_irq(shost->host_lock); + vport->fc_flag &= ~FC_NDISC_ACTIVE; + vport->fc_flag &= ~FC_FABRIC; + spin_unlock_irq(shost->host_lock); + lpfc_can_disctmo(vport); + } + + if (ndlp->save_flags & NLP_WAIT_FOR_LOGO) { + /* Wake up lpfc_vport_delete if waiting...*/ + if (ndlp->logo_waitq) + wake_up(ndlp->logo_waitq); + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~(NLP_ISSUE_LOGO | NLP_LOGO_SND); + ndlp->save_flags &= ~NLP_WAIT_FOR_LOGO; + spin_unlock_irq(&ndlp->lock); + } + + /* Safe to release resources now. */ + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +/** + * lpfc_issue_els_npiv_logo - Issue a logo off a vport + * @vport: pointer to a virtual N_Port data structure. + * @ndlp: pointer to a node-list data structure. + * + * This routine issues a LOGO ELS command to an @ndlp off a @vport. + * + * Note that the ndlp reference count will be incremented by 1 for holding the + * ndlp and the reference to ndlp will be stored into the ndlp field of + * the IOCB for the completion callback function to the LOGO ELS command. + * + * Return codes + * 0 - Successfully issued logo off the @vport + * 1 - Failed to issue logo off the @vport + **/ +int +lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) +{ + int rc = 0; + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *elsiocb; + uint8_t *pcmd; + uint16_t cmdsize; + + cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name); + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID, + ELS_CMD_LOGO); + if (!elsiocb) + return 1; + + pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt; + *((uint32_t *) (pcmd)) = ELS_CMD_LOGO; + pcmd += sizeof(uint32_t); + + /* Fill in LOGO payload */ + *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID); + pcmd += sizeof(uint32_t); + memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name)); + + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, + "Issue LOGO npiv did:x%x flg:x%x", + ndlp->nlp_DID, ndlp->nlp_flag, 0); + + elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo; + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag |= NLP_LOGO_SND; + spin_unlock_irq(&ndlp->lock); + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(phba, elsiocb); + goto err; + } + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + goto err; + } + return 0; + +err: + spin_lock_irq(&ndlp->lock); + ndlp->nlp_flag &= ~NLP_LOGO_SND; + spin_unlock_irq(&ndlp->lock); + return 1; +} + +/** + * lpfc_fabric_block_timeout - Handler function to the fabric block timer + * @t: timer context used to obtain the lpfc hba. + * + * This routine is invoked by the fabric iocb block timer after + * timeout. It posts the fabric iocb block timeout event by setting the + * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes + * lpfc_worker_wake_up() routine to wake up the worker thread. It is for + * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the + * posted event WORKER_FABRIC_BLOCK_TMO. + **/ +void +lpfc_fabric_block_timeout(struct timer_list *t) +{ + struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer); + unsigned long iflags; + uint32_t tmo_posted; + + spin_lock_irqsave(&phba->pport->work_port_lock, iflags); + tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO; + if (!tmo_posted) + phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO; + spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); + + if (!tmo_posted) + lpfc_worker_wake_up(phba); + return; +} + +/** + * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list + * @phba: pointer to lpfc hba data structure. + * + * This routine issues one fabric iocb from the driver internal list to + * the HBA. It first checks whether it's ready to issue one fabric iocb to + * the HBA (whether there is no outstanding fabric iocb). If so, it shall + * remove one pending fabric iocb from the driver internal list and invokes + * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA. + **/ +static void +lpfc_resume_fabric_iocbs(struct lpfc_hba *phba) +{ + struct lpfc_iocbq *iocb; + unsigned long iflags; + int ret; + +repeat: + iocb = NULL; + spin_lock_irqsave(&phba->hbalock, iflags); + /* Post any pending iocb to the SLI layer */ + if (atomic_read(&phba->fabric_iocb_count) == 0) { + list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb), + list); + if (iocb) + /* Increment fabric iocb count to hold the position */ + atomic_inc(&phba->fabric_iocb_count); + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (iocb) { + iocb->fabric_cmd_cmpl = iocb->cmd_cmpl; + iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb; + iocb->cmd_flag |= LPFC_IO_FABRIC; + + lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, + "Fabric sched1: ste:x%x", + iocb->vport->port_state, 0, 0); + + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); + + if (ret == IOCB_ERROR) { + iocb->cmd_cmpl = iocb->fabric_cmd_cmpl; + iocb->fabric_cmd_cmpl = NULL; + iocb->cmd_flag &= ~LPFC_IO_FABRIC; + set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT); + iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED; + iocb->cmd_cmpl(phba, iocb, iocb); + + atomic_dec(&phba->fabric_iocb_count); + goto repeat; + } + } +} + +/** + * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command + * @phba: pointer to lpfc hba data structure. + * + * This routine unblocks the issuing fabric iocb command. The function + * will clear the fabric iocb block bit and then invoke the routine + * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb + * from the driver internal fabric iocb list. + **/ +void +lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba) +{ + clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); + + lpfc_resume_fabric_iocbs(phba); + return; +} + +/** + * lpfc_block_fabric_iocbs - Block issuing fabric iocb command + * @phba: pointer to lpfc hba data structure. + * + * This routine blocks the issuing fabric iocb for a specified amount of + * time (currently 100 ms). This is done by set the fabric iocb block bit + * and set up a timeout timer for 100ms. When the block bit is set, no more + * fabric iocb will be issued out of the HBA. + **/ +static void +lpfc_block_fabric_iocbs(struct lpfc_hba *phba) +{ + int blocked; + + blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); + /* Start a timer to unblock fabric iocbs after 100ms */ + if (!blocked) + mod_timer(&phba->fabric_block_timer, + jiffies + msecs_to_jiffies(100)); + + return; +} + +/** + * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb + * @phba: pointer to lpfc hba data structure. + * @cmdiocb: pointer to lpfc command iocb data structure. + * @rspiocb: pointer to lpfc response iocb data structure. + * + * This routine is the callback function that is put to the fabric iocb's + * callback function pointer (iocb->cmd_cmpl). The original iocb's callback + * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback + * function first restores and invokes the original iocb's callback function + * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next + * fabric bound iocb from the driver internal fabric iocb list onto the wire. + **/ +static void +lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct ls_rjt stat; + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + + WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC); + + switch (ulp_status) { + case IOSTAT_NPORT_RJT: + case IOSTAT_FABRIC_RJT: + if (ulp_word4 & RJT_UNAVAIL_TEMP) + lpfc_block_fabric_iocbs(phba); + break; + + case IOSTAT_NPORT_BSY: + case IOSTAT_FABRIC_BSY: + lpfc_block_fabric_iocbs(phba); + break; + + case IOSTAT_LS_RJT: + stat.un.ls_rjt_error_be = + cpu_to_be32(ulp_word4); + if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) || + (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY)) + lpfc_block_fabric_iocbs(phba); + break; + } + + BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0); + + cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl; + cmdiocb->fabric_cmd_cmpl = NULL; + cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC; + cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb); + + atomic_dec(&phba->fabric_iocb_count); + if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) { + /* Post any pending iocbs to HBA */ + lpfc_resume_fabric_iocbs(phba); + } +} + +/** + * lpfc_issue_fabric_iocb - Issue a fabric iocb command + * @phba: pointer to lpfc hba data structure. + * @iocb: pointer to lpfc command iocb data structure. + * + * This routine is used as the top-level API for issuing a fabric iocb command + * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver + * function makes sure that only one fabric bound iocb will be outstanding at + * any given time. As such, this function will first check to see whether there + * is already an outstanding fabric iocb on the wire. If so, it will put the + * newly issued iocb onto the driver internal fabric iocb list, waiting to be + * issued later. Otherwise, it will issue the iocb on the wire and update the + * fabric iocb count it indicate that there is one fabric iocb on the wire. + * + * Note, this implementation has a potential sending out fabric IOCBs out of + * order. The problem is caused by the construction of the "ready" boolen does + * not include the condition that the internal fabric IOCB list is empty. As + * such, it is possible a fabric IOCB issued by this routine might be "jump" + * ahead of the fabric IOCBs in the internal list. + * + * Return code + * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully + * IOCB_ERROR - failed to issue fabric iocb + **/ +static int +lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb) +{ + unsigned long iflags; + int ready; + int ret; + + BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1); + + spin_lock_irqsave(&phba->hbalock, iflags); + ready = atomic_read(&phba->fabric_iocb_count) == 0 && + !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); + + if (ready) + /* Increment fabric iocb count to hold the position */ + atomic_inc(&phba->fabric_iocb_count); + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (ready) { + iocb->fabric_cmd_cmpl = iocb->cmd_cmpl; + iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb; + iocb->cmd_flag |= LPFC_IO_FABRIC; + + lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD, + "Fabric sched2: ste:x%x", + iocb->vport->port_state, 0, 0); + + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0); + + if (ret == IOCB_ERROR) { + iocb->cmd_cmpl = iocb->fabric_cmd_cmpl; + iocb->fabric_cmd_cmpl = NULL; + iocb->cmd_flag &= ~LPFC_IO_FABRIC; + atomic_dec(&phba->fabric_iocb_count); + } + } else { + spin_lock_irqsave(&phba->hbalock, iflags); + list_add_tail(&iocb->list, &phba->fabric_iocb_list); + spin_unlock_irqrestore(&phba->hbalock, iflags); + ret = IOCB_SUCCESS; + } + return ret; +} + +/** + * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list + * @vport: pointer to a virtual N_Port data structure. + * + * This routine aborts all the IOCBs associated with a @vport from the + * driver internal fabric IOCB list. The list contains fabric IOCBs to be + * issued to the ELS IOCB ring. This abort function walks the fabric IOCB + * list, removes each IOCB associated with the @vport off the list, set the + * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function + * associated with the IOCB. + **/ +static void lpfc_fabric_abort_vport(struct lpfc_vport *vport) +{ + LIST_HEAD(completions); + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *tmp_iocb, *piocb; + + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, + list) { + + if (piocb->vport != vport) + continue; + + list_move_tail(&piocb->list, &completions); + } + spin_unlock_irq(&phba->hbalock); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); +} + +/** + * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list + * @ndlp: pointer to a node-list data structure. + * + * This routine aborts all the IOCBs associated with an @ndlp from the + * driver internal fabric IOCB list. The list contains fabric IOCBs to be + * issued to the ELS IOCB ring. This abort function walks the fabric IOCB + * list, removes each IOCB associated with the @ndlp off the list, set the + * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function + * associated with the IOCB. + **/ +void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp) +{ + LIST_HEAD(completions); + struct lpfc_hba *phba = ndlp->phba; + struct lpfc_iocbq *tmp_iocb, *piocb; + struct lpfc_sli_ring *pring; + + pring = lpfc_phba_elsring(phba); + + if (unlikely(!pring)) + return; + + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list, + list) { + if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) { + + list_move_tail(&piocb->list, &completions); + } + } + spin_unlock_irq(&phba->hbalock); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); +} + +/** + * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list + * @phba: pointer to lpfc hba data structure. + * + * This routine aborts all the IOCBs currently on the driver internal + * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS + * IOCB ring. This function takes the entire IOCB list off the fabric IOCB + * list, removes IOCBs off the list, set the status field to + * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with + * the IOCB. + **/ +void lpfc_fabric_abort_hba(struct lpfc_hba *phba) +{ + LIST_HEAD(completions); + + spin_lock_irq(&phba->hbalock); + list_splice_init(&phba->fabric_iocb_list, &completions); + spin_unlock_irq(&phba->hbalock); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); +} + +/** + * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport + * @vport: pointer to lpfc vport data structure. + * + * This routine is invoked by the vport cleanup for deletions and the cleanup + * for an ndlp on removal. + **/ +void +lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; + struct lpfc_nodelist *ndlp = NULL; + unsigned long iflag = 0; + + spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); + list_for_each_entry_safe(sglq_entry, sglq_next, + &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { + if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) { + lpfc_nlp_put(sglq_entry->ndlp); + ndlp = sglq_entry->ndlp; + sglq_entry->ndlp = NULL; + + /* If the xri on the abts_els_sgl list is for the Fport + * node and the vport is unloading, the xri aborted wcqe + * likely isn't coming back. Just release the sgl. + */ + if ((vport->load_flag & FC_UNLOADING) && + ndlp->nlp_DID == Fabric_DID) { + list_del(&sglq_entry->list); + sglq_entry->state = SGL_FREED; + list_add_tail(&sglq_entry->list, + &phba->sli4_hba.lpfc_els_sgl_list); + } + } + } + spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); + return; +} + +/** + * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort + * @phba: pointer to lpfc hba data structure. + * @axri: pointer to the els xri abort wcqe structure. + * + * This routine is invoked by the worker thread to process a SLI4 slow-path + * ELS aborted xri. + **/ +void +lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba, + struct sli4_wcqe_xri_aborted *axri) +{ + uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); + uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); + uint16_t lxri = 0; + + struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; + unsigned long iflag = 0; + struct lpfc_nodelist *ndlp; + struct lpfc_sli_ring *pring; + + pring = lpfc_phba_elsring(phba); + + spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag); + list_for_each_entry_safe(sglq_entry, sglq_next, + &phba->sli4_hba.lpfc_abts_els_sgl_list, list) { + if (sglq_entry->sli4_xritag == xri) { + list_del(&sglq_entry->list); + ndlp = sglq_entry->ndlp; + sglq_entry->ndlp = NULL; + list_add_tail(&sglq_entry->list, + &phba->sli4_hba.lpfc_els_sgl_list); + sglq_entry->state = SGL_FREED; + spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, + iflag); + + if (ndlp) { + lpfc_set_rrq_active(phba, ndlp, + sglq_entry->sli4_lxritag, + rxid, 1); + lpfc_nlp_put(ndlp); + } + + /* Check if TXQ queue needs to be serviced */ + if (pring && !list_empty(&pring->txq)) + lpfc_worker_wake_up(phba); + return; + } + } + spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag); + lxri = lpfc_sli4_xri_inrange(phba, xri); + if (lxri == NO_XRI) + return; + + spin_lock_irqsave(&phba->hbalock, iflag); + sglq_entry = __lpfc_get_active_sglq(phba, lxri); + if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return; + } + sglq_entry->state = SGL_XRI_ABORTED; + spin_unlock_irqrestore(&phba->hbalock, iflag); + return; +} + +/* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req. + * @vport: pointer to virtual port object. + * @ndlp: nodelist pointer for the impacted node. + * + * The driver calls this routine in response to an SLI4 XRI ABORT CQE + * or an SLI3 ASYNC_STATUS_CN event from the port. For either event, + * the driver is required to send a LOGO to the remote node before it + * attempts to recover its login to the remote node. + */ +void +lpfc_sli_abts_recover_port(struct lpfc_vport *vport, + struct lpfc_nodelist *ndlp) +{ + struct Scsi_Host *shost; + struct lpfc_hba *phba; + unsigned long flags = 0; + + shost = lpfc_shost_from_vport(vport); + phba = vport->phba; + if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { + lpfc_printf_log(phba, KERN_INFO, + LOG_SLI, "3093 No rport recovery needed. " + "rport in state 0x%x\n", ndlp->nlp_state); + return; + } + lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, + "3094 Start rport recovery on shost id 0x%x " + "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x " + "flags 0x%x\n", + shost->host_no, ndlp->nlp_DID, + vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state, + ndlp->nlp_flag); + /* + * The rport is not responding. Remove the FCP-2 flag to prevent + * an ADISC in the follow-up recovery code. + */ + spin_lock_irqsave(&ndlp->lock, flags); + ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; + ndlp->nlp_flag |= NLP_ISSUE_LOGO; + spin_unlock_irqrestore(&ndlp->lock, flags); + lpfc_unreg_rpi(vport, ndlp); +} + +static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport) +{ + bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE); +} + +static void +lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max) +{ + u32 i; + + if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE)) + return; + + for (i = min; i <= max; i++) + set_bit(i, vport->vmid_priority_range); +} + +static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid) +{ + set_bit(ctcl_vmid, vport->vmid_priority_range); +} + +u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport) +{ + u32 i; + + i = find_first_bit(vport->vmid_priority_range, + LPFC_VMID_MAX_PRIORITY_RANGE); + + if (i == LPFC_VMID_MAX_PRIORITY_RANGE) + return 0; + + clear_bit(i, vport->vmid_priority_range); + return i; +} + +#define MAX_PRIORITY_DESC 255 + +static void +lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct priority_range_desc *desc; + struct lpfc_dmabuf *prsp = NULL; + struct lpfc_vmid_priority_range *vmid_range = NULL; + u32 *data; + struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf; + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + u8 *pcmd, max_desc; + u32 len, i; + struct lpfc_nodelist *ndlp = cmdiocb->ndlp; + + prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + + pcmd = prsp->virt; + data = (u32 *)pcmd; + if (data[0] == ELS_CMD_LS_RJT) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, + "3277 QFPA LS_RJT x%x x%x\n", + data[0], data[1]); + goto out; + } + if (ulp_status) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, + "6529 QFPA failed with status x%x x%x\n", + ulp_status, ulp_word4); + goto out; + } + + if (!vport->qfpa_res) { + max_desc = FCELSSIZE / sizeof(*vport->qfpa_res); + vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res), + GFP_KERNEL); + if (!vport->qfpa_res) + goto out; + } + + len = *((u32 *)(pcmd + 4)); + len = be32_to_cpu(len); + memcpy(vport->qfpa_res, pcmd, len + 8); + len = len / LPFC_PRIORITY_RANGE_DESC_SIZE; + + desc = (struct priority_range_desc *)(pcmd + 8); + vmid_range = vport->vmid_priority.vmid_range; + if (!vmid_range) { + vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range), + GFP_KERNEL); + if (!vmid_range) { + kfree(vport->qfpa_res); + goto out; + } + vport->vmid_priority.vmid_range = vmid_range; + } + vport->vmid_priority.num_descriptors = len; + + for (i = 0; i < len; i++, vmid_range++, desc++) { + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, + "6539 vmid values low=%d, high=%d, qos=%d, " + "local ve id=%d\n", desc->lo_range, + desc->hi_range, desc->qos_priority, + desc->local_ve_id); + + vmid_range->low = desc->lo_range << 1; + if (desc->local_ve_id == QFPA_ODD_ONLY) + vmid_range->low++; + if (desc->qos_priority) + vport->vmid_flag |= LPFC_VMID_QOS_ENABLED; + vmid_range->qos = desc->qos_priority; + + vmid_range->high = desc->hi_range << 1; + if ((desc->local_ve_id == QFPA_ODD_ONLY) || + (desc->local_ve_id == QFPA_EVEN_ODD)) + vmid_range->high++; + } + lpfc_init_cs_ctl_bitmap(vport); + for (i = 0; i < vport->vmid_priority.num_descriptors; i++) { + lpfc_vmid_set_cs_ctl_range(vport, + vport->vmid_priority.vmid_range[i].low, + vport->vmid_priority.vmid_range[i].high); + } + + vport->vmid_flag |= LPFC_VMID_QFPA_CMPL; + out: + lpfc_els_free_iocb(phba, cmdiocb); + lpfc_nlp_put(ndlp); +} + +int lpfc_issue_els_qfpa(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *elsiocb; + u8 *pcmd; + int ret; + + ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); + if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + return -ENXIO; + + elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp, + ndlp->nlp_DID, ELS_CMD_QFPA); + if (!elsiocb) + return -ENOMEM; + + pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; + + *((u32 *)(pcmd)) = ELS_CMD_QFPA; + pcmd += 4; + + elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa; + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(vport->phba, elsiocb); + return -ENXIO; + } + + ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2); + if (ret != IOCB_SUCCESS) { + lpfc_els_free_iocb(phba, elsiocb); + lpfc_nlp_put(ndlp); + return -EIO; + } + vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED; + return 0; +} + +int +lpfc_vmid_uvem(struct lpfc_vport *vport, + struct lpfc_vmid *vmid, bool instantiated) +{ + struct lpfc_vem_id_desc *vem_id_desc; + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *elsiocb; + struct instantiated_ve_desc *inst_desc; + struct lpfc_vmid_context *vmid_context; + u8 *pcmd; + u32 *len; + int ret = 0; + + ndlp = lpfc_findnode_did(vport, Fabric_DID); + if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + return -ENXIO; + + vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL); + if (!vmid_context) + return -ENOMEM; + elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2, + ndlp, Fabric_DID, ELS_CMD_UVEM); + if (!elsiocb) + goto out; + + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS, + "3427 Host vmid %s %d\n", + vmid->host_vmid, instantiated); + vmid_context->vmp = vmid; + vmid_context->nlp = ndlp; + vmid_context->instantiated = instantiated; + elsiocb->vmid_tag.vmid_context = vmid_context; + pcmd = (u8 *)elsiocb->cmd_dmabuf->virt; + + if (uuid_is_null((uuid_t *)vport->lpfc_vmid_host_uuid)) + memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid, + LPFC_COMPRESS_VMID_SIZE); + + *((u32 *)(pcmd)) = ELS_CMD_UVEM; + len = (u32 *)(pcmd + 4); + *len = cpu_to_be32(LPFC_UVEM_SIZE - 8); + + vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8); + vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG); + vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE); + memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid, + LPFC_COMPRESS_VMID_SIZE); + + inst_desc = (struct instantiated_ve_desc *)(pcmd + 32); + inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); + inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE); + memcpy(inst_desc->global_vem_id, vmid->host_vmid, + LPFC_COMPRESS_VMID_SIZE); + + bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID); + bf_set(lpfc_instantiated_local_id, inst_desc, + vmid->un.cs_ctl_vmid); + if (instantiated) { + inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG); + } else { + inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG); + lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid); + } + inst_desc->word6 = cpu_to_be32(inst_desc->word6); + + elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem; + + elsiocb->ndlp = lpfc_nlp_get(ndlp); + if (!elsiocb->ndlp) { + lpfc_els_free_iocb(vport->phba, elsiocb); + goto out; + } + + ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0); + if (ret != IOCB_SUCCESS) { + lpfc_els_free_iocb(vport->phba, elsiocb); + lpfc_nlp_put(ndlp); + goto out; + } + + return 0; + out: + kfree(vmid_context); + return -EIO; +} + +static void +lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = icmdiocb->vport; + struct lpfc_dmabuf *prsp = NULL; + struct lpfc_vmid_context *vmid_context = + icmdiocb->vmid_tag.vmid_context; + struct lpfc_nodelist *ndlp = icmdiocb->ndlp; + u8 *pcmd; + u32 *data; + u32 ulp_status = get_job_ulpstatus(phba, rspiocb); + u32 ulp_word4 = get_job_word4(phba, rspiocb); + struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf; + struct lpfc_vmid *vmid; + + vmid = vmid_context->vmp; + if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + ndlp = NULL; + + prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list); + if (!prsp) + goto out; + pcmd = prsp->virt; + data = (u32 *)pcmd; + if (data[0] == ELS_CMD_LS_RJT) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, + "4532 UVEM LS_RJT %x %x\n", data[0], data[1]); + goto out; + } + if (ulp_status) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI, + "4533 UVEM error status %x: %x\n", + ulp_status, ulp_word4); + goto out; + } + spin_lock(&phba->hbalock); + /* Set IN USE flag */ + vport->vmid_flag |= LPFC_VMID_IN_USE; + phba->pport->vmid_flag |= LPFC_VMID_IN_USE; + spin_unlock(&phba->hbalock); + + if (vmid_context->instantiated) { + write_lock(&vport->vmid_lock); + vmid->flag |= LPFC_VMID_REGISTERED; + vmid->flag &= ~LPFC_VMID_REQ_REGISTER; + write_unlock(&vport->vmid_lock); + } + + out: + kfree(vmid_context); + lpfc_els_free_iocb(phba, icmdiocb); + lpfc_nlp_put(ndlp); +} |