[RFC 12/16] lpfc: vmid: Implements CT commands for appid.

Muneendra
2020-08-04T09:07:48Z

From: Gaurav Srivastava <gaurav.srivastava@broadcom.com>

The patch implements CT commands for registering and deregistering the
appid for the application. Also, a small change in decrementing the ndlp
ref counter has been added.

Signed-off-by: Gaurav Srivastava <gaurav.srivastava@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Muneendra <muneendra.kumar@broadcom.com>
---
drivers/scsi/lpfc/lpfc_ct.c | 256 ++++++++++++++++++++++++++++++++++--
1 file changed, 245 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index dd9f2bf54edd..d194a3efe61b 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -388,6 +388,7 @@ lpfc_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,

if (rc == IOCB_ERROR) {
lpfc_sli_release_iocbq(phba, geniocb);
+ lpfc_nlp_put(ndlp);
return 1;
}

@@ -1829,11 +1830,6 @@ lpfc_ns_cmd(struct lpfc_vport *vport, int cmdcode,
}
rc=6;

- /* Decrement ndlp reference count to release ndlp reference held
- * for the failed command's callback function.
- */
- lpfc_nlp_put(ndlp);
-
ns_cmd_free_bmpvirt:
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
ns_cmd_free_bmp:
@@ -3238,12 +3234,6 @@ lpfc_fdmi_cmd(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (!lpfc_ct_cmd(vport, mp, bmp, ndlp, cmpl, rsp_size, 0))
return 0;

- /*
- * Decrement ndlp reference count to release ndlp reference held
- * for the failed command's callback function.
- */
- lpfc_nlp_put(ndlp);
-
fdmi_cmd_free_bmpvirt:
lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
fdmi_cmd_free_bmp:
@@ -3394,3 +3384,247 @@ lpfc_decode_firmware_rev(struct lpfc_hba *phba, char *fwrevision, int flag)
}
return;
}
+
+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;
+ struct lpfc_vmid *vmp;
+ 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\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 id\n"
+ "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_hastable(vport, hash,
+ app->obj.entity_id);
+ if (vmp) {
+ vmp->un.app_id = be32_to_cpu(app->app_id);
+ vmp->flag |= LPFC_VMID_REGISTERED;
+ vmp->flag &= ~LPFC_VMID_REQ_REGISTER;
+ /* Set IN USE flag */
+ vport->vmid_flag |= LPFC_VMID_IN_USE;
+ } else {
+ lpfc_printf_vlog(vport, KERN_DEBUG,
+ LOG_DISCOVERY, "6901 No entry found\n"
+ "%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",
+ cpu_to_be32(app->app_id),
+ cpu_to_be32(app->port_id));
+ break;
+ case SLI_CTAS_DALLAPP_ID:
+ lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY,
+ "8856 Deregistered all app ids");
+ 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));
+ }
+ for (i = 0; i < LPFC_VMID_HASH_SIZE; i++)
+ vport->hash_table[i] = NULL;
+ vport->load_flag |= FC_ALLOW_VMID;
+ break;
+ default:
+ lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY,
+ "8857 Invalid command code");
+ }
+}
+
+/**
+ * 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 || !NLP_CHK_NODE_ACT(ndlp))
+ 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,
+ "0218 VMID Request Data: x%x x%x x%x",
+ 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", 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", 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);
+ vmid->flag &= ~LPFC_VMID_REGISTERED;
+ 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",
+ 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 FDMI request failed */
+ lpfc_printf_vlog(vport, KERN_DEBUG, LOG_DISCOVERY,
+ "0244 Issue FDMI request failed Data: x%x", cmdcode);
+ return 1;
+}
--
2.18.2