[PATCH v5 11/16] lpfc: vmid: Implements CT commands for appid.

[Muneendra <muneendra.kumar@broadcom.com>]

[-- Attachment #1: Type: text/plain, Size: 9426 bytes --]

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>

---
v5:
No change

v4:
No change

v3:
No change

v2:
Ported the patch on top of 5.10/scsi-queue
Removed redundant code due to changes since last submit
---
 drivers/scsi/lpfc/lpfc_ct.c | 249 ++++++++++++++++++++++++++++++++++++
 1 file changed, 249 insertions(+)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index dd0b432f7ac5..5099c46f4c4e 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -3744,3 +3744,252 @@ 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 || 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,
+			 "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;
+
+	/* Decrement ndlp reference count to release ndlp reference held
+	 * for the failed command's callback function.
+	 */
+	lpfc_nlp_put(ndlp);
+
+ 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 FAILURE;
+}
-- 
2.26.2


-- 
This electronic communication and the information and any files transmitted 
with it, or attached to it, are confidential and are intended solely for 
the use of the individual or entity to whom it is addressed and may contain 
information that is confidential, legally privileged, protected by privacy 
laws, or otherwise restricted from disclosure to anyone else. If you are 
not the intended recipient or the person responsible for delivering the 
e-mail to the intended recipient, you are hereby notified that any use, 
copying, distributing, dissemination, forwarding, printing, or copying of 
this e-mail is strictly prohibited. If you received this e-mail in error, 
please return the e-mail to the sender, delete it from your computer, and 
destroy any printed copy of it.

[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4177 bytes --]