From 742b0cf87a8f9219101d68a7b4c6317db057ac58 Mon Sep 17 00:00:00 2001 From: Gaurav Srivastava Date: Tue, 8 Jun 2021 10:05:52 +0530 Subject: scsi: lpfc: vmid: Implement CT commands for appid Implement CT commands for registering and deregistering the appid for the application. Also, a small change in decrementing the ndlp ref counter has been added. Link: https://lore.kernel.org/r/20210608043556.274139-10-muneendra.kumar@broadcom.com Reviewed-by: Hannes Reinecke Signed-off-by: Gaurav Srivastava Signed-off-by: James Smart Signed-off-by: Muneendra Kumar Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_ct.c | 255 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 255 insertions(+) (limited to 'drivers/scsi/lpfc/lpfc_ct.c') diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c index cbf1be56b1e7..610b6dabb3b5 100644 --- a/drivers/scsi/lpfc/lpfc_ct.c +++ b/drivers/scsi/lpfc/lpfc_ct.c @@ -75,6 +75,9 @@ static char *lpfc_release_version = LPFC_DRIVER_VERSION; +static void +lpfc_cmpl_ct_cmd_vmid(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb); static void lpfc_ct_ignore_hbq_buffer(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, @@ -3777,3 +3780,255 @@ lpfc_decode_firmware_rev(struct lpfc_hba *phba, char *fwrevision, int flag) } return; } + +static void +lpfc_cmpl_ct_cmd_vmid(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct lpfc_dmabuf *inp = cmdiocb->context1; + struct lpfc_dmabuf *outp = cmdiocb->context2; + struct lpfc_sli_ct_request *ctcmd = inp->virt; + struct lpfc_sli_ct_request *ctrsp = outp->virt; + u16 rsp = ctrsp->CommandResponse.bits.CmdRsp; + struct app_id_object *app; + u32 cmd, hash, bucket; + struct lpfc_vmid *vmp, *cur; + u8 *data = outp->virt; + int i; + + cmd = be16_to_cpu(ctcmd->CommandResponse.bits.CmdRsp); + if (cmd == SLI_CTAS_DALLAPP_ID) + lpfc_ct_free_iocb(phba, cmdiocb); + + if (lpfc_els_chk_latt(vport) || rspiocb->iocb.ulpStatus) { + if (cmd != SLI_CTAS_DALLAPP_ID) + return; + } + /* Check for a CT LS_RJT response */ + if (rsp == be16_to_cpu(SLI_CT_RESPONSE_FS_RJT)) { + if (cmd != SLI_CTAS_DALLAPP_ID) + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "3306 VMID FS_RJT Data: x%x x%x x%x\n", + cmd, ctrsp->ReasonCode, + ctrsp->Explanation); + if ((cmd != SLI_CTAS_DALLAPP_ID) || + (ctrsp->ReasonCode != SLI_CT_UNABLE_TO_PERFORM_REQ) || + (ctrsp->Explanation != SLI_CT_APP_ID_NOT_AVAILABLE)) { + /* If DALLAPP_ID failed retry later */ + if (cmd == SLI_CTAS_DALLAPP_ID) + vport->load_flag |= FC_DEREGISTER_ALL_APP_ID; + return; + } + } + + switch (cmd) { + case SLI_CTAS_RAPP_IDENT: + app = (struct app_id_object *)(RAPP_IDENT_OFFSET + data); + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "6712 RAPP_IDENT app id %d port id x%x id " + "len %d\n", be32_to_cpu(app->app_id), + be32_to_cpu(app->port_id), + app->obj.entity_id_len); + + if (app->obj.entity_id_len == 0 || app->port_id == 0) + return; + + hash = lpfc_vmid_hash_fn(app->obj.entity_id, + app->obj.entity_id_len); + vmp = lpfc_get_vmid_from_hashtable(vport, hash, + app->obj.entity_id); + if (vmp) { + write_lock(&vport->vmid_lock); + vmp->un.app_id = be32_to_cpu(app->app_id); + vmp->flag |= LPFC_VMID_REGISTERED; + vmp->flag &= ~LPFC_VMID_REQ_REGISTER; + write_unlock(&vport->vmid_lock); + /* Set IN USE flag */ + vport->vmid_flag |= LPFC_VMID_IN_USE; + } else { + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "6901 No entry found %s hash %d\n", + app->obj.entity_id, hash); + } + break; + case SLI_CTAS_DAPP_IDENT: + app = (struct app_id_object *)(DAPP_IDENT_OFFSET + data); + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "6713 DAPP_IDENT app id %d port id x%x\n", + be32_to_cpu(app->app_id), + be32_to_cpu(app->port_id)); + break; + case SLI_CTAS_DALLAPP_ID: + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "8856 Deregistered all app ids\n"); + read_lock(&vport->vmid_lock); + for (i = 0; i < phba->cfg_max_vmid; i++) { + vmp = &vport->vmid[i]; + if (vmp->flag != LPFC_VMID_SLOT_FREE) + memset(vmp, 0, sizeof(struct lpfc_vmid)); + } + read_unlock(&vport->vmid_lock); + /* for all elements in the hash table */ + if (!hash_empty(vport->hash_table)) + hash_for_each(vport->hash_table, bucket, cur, hnode) + hash_del(&cur->hnode); + vport->load_flag |= FC_ALLOW_VMID; + break; + default: + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "8857 Invalid command code\n"); + } +} + +/** + * lpfc_vmid_cmd - Build and send a FDMI cmd to the specified NPort + * @vport: pointer to a host virtual N_Port data structure. + * @ndlp: ndlp to send FDMI cmd to (if NULL use FDMI_DID) + * cmdcode: FDMI command to send + * mask: Mask of HBA or PORT Attributes to send + * + * Builds and sends a FDMI command using the CT subsystem. + */ +int +lpfc_vmid_cmd(struct lpfc_vport *vport, + int cmdcode, struct lpfc_vmid *vmid) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_dmabuf *mp, *bmp; + struct lpfc_sli_ct_request *ctreq; + struct ulp_bde64 *bpl; + u32 size; + u32 rsp_size; + u8 *data; + struct lpfc_vmid_rapp_ident_list *rap; + struct lpfc_vmid_dapp_ident_list *dap; + u8 retry = 0; + struct lpfc_nodelist *ndlp; + + void (*cmpl)(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb); + + ndlp = lpfc_findnode_did(vport, FDMI_DID); + if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) + return 0; + + cmpl = lpfc_cmpl_ct_cmd_vmid; + + /* fill in BDEs for command */ + /* Allocate buffer for command payload */ + mp = kmalloc(sizeof(*mp), GFP_KERNEL); + if (!mp) + goto vmid_free_mp_exit; + + mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); + if (!mp->virt) + goto vmid_free_mp_virt_exit; + + /* Allocate buffer for Buffer ptr list */ + bmp = kmalloc(sizeof(*bmp), GFP_KERNEL); + if (!bmp) + goto vmid_free_bmp_exit; + + bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); + if (!bmp->virt) + goto vmid_free_bmp_virt_exit; + + INIT_LIST_HEAD(&mp->list); + INIT_LIST_HEAD(&bmp->list); + + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "3275 VMID Request Data: x%x x%x x%x\n", + vport->fc_flag, vport->port_state, cmdcode); + ctreq = (struct lpfc_sli_ct_request *)mp->virt; + data = mp->virt; + /* First populate the CT_IU preamble */ + memset(data, 0, LPFC_BPL_SIZE); + ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; + ctreq->RevisionId.bits.InId = 0; + + ctreq->FsType = SLI_CT_MANAGEMENT_SERVICE; + ctreq->FsSubType = SLI_CT_APP_SEV_Subtypes; + + ctreq->CommandResponse.bits.CmdRsp = cpu_to_be16(cmdcode); + rsp_size = LPFC_BPL_SIZE; + size = 0; + + switch (cmdcode) { + case SLI_CTAS_RAPP_IDENT: + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "1329 RAPP_IDENT for %s\n", vmid->host_vmid); + ctreq->un.PortID = cpu_to_be32(vport->fc_myDID); + rap = (struct lpfc_vmid_rapp_ident_list *) + (DAPP_IDENT_OFFSET + data); + rap->no_of_objects = cpu_to_be32(1); + rap->obj[0].entity_id_len = vmid->vmid_len; + memcpy(rap->obj[0].entity_id, vmid->host_vmid, vmid->vmid_len); + size = RAPP_IDENT_OFFSET + + sizeof(struct lpfc_vmid_rapp_ident_list); + retry = 1; + break; + + case SLI_CTAS_GALLAPPIA_ID: + ctreq->un.PortID = cpu_to_be32(vport->fc_myDID); + size = GALLAPPIA_ID_SIZE; + break; + + case SLI_CTAS_DAPP_IDENT: + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "1469 DAPP_IDENT for %s\n", vmid->host_vmid); + ctreq->un.PortID = cpu_to_be32(vport->fc_myDID); + dap = (struct lpfc_vmid_dapp_ident_list *) + (DAPP_IDENT_OFFSET + data); + dap->no_of_objects = cpu_to_be32(1); + dap->obj[0].entity_id_len = vmid->vmid_len; + memcpy(dap->obj[0].entity_id, vmid->host_vmid, vmid->vmid_len); + size = DAPP_IDENT_OFFSET + + sizeof(struct lpfc_vmid_dapp_ident_list); + write_lock(&vport->vmid_lock); + vmid->flag &= ~LPFC_VMID_REGISTERED; + write_unlock(&vport->vmid_lock); + retry = 1; + break; + + case SLI_CTAS_DALLAPP_ID: + ctreq->un.PortID = cpu_to_be32(vport->fc_myDID); + size = DALLAPP_ID_SIZE; + break; + + default: + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "7062 VMID cmdcode x%x not supported\n", + cmdcode); + goto vmid_free_all_mem; + } + + ctreq->CommandResponse.bits.Size = cpu_to_be16(rsp_size); + + bpl = (struct ulp_bde64 *)bmp->virt; + bpl->addrHigh = putPaddrHigh(mp->phys); + bpl->addrLow = putPaddrLow(mp->phys); + bpl->tus.f.bdeFlags = 0; + bpl->tus.f.bdeSize = size; + + /* The lpfc_ct_cmd/lpfc_get_req shall increment ndlp reference count + * to hold ndlp reference for the corresponding callback function. + */ + if (!lpfc_ct_cmd(vport, mp, bmp, ndlp, cmpl, rsp_size, retry)) + return 0; + + vmid_free_all_mem: + lpfc_mbuf_free(phba, bmp->virt, bmp->phys); + vmid_free_bmp_virt_exit: + kfree(bmp); + vmid_free_bmp_exit: + lpfc_mbuf_free(phba, mp->virt, mp->phys); + vmid_free_mp_virt_exit: + kfree(mp); + vmid_free_mp_exit: + + /* Issue CT request failed */ + lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY, + "3276 VMID CT request failed Data: x%x\n", cmdcode); + return -EIO; +} -- cgit v1.2.3