@@ -277,6 +277,7 @@ struct lpfc_stats {
uint32_t elsXmitADISC;
uint32_t elsXmitLOGO;
uint32_t elsXmitSCR;
+ uint32_t elsXmitRSCN;
uint32_t elsXmitRNID;
uint32_t elsXmitFARP;
uint32_t elsXmitFARPR;
@@ -142,6 +142,7 @@ int lpfc_issue_els_adisc(struct lpfc_vport *, struct lpfc_nodelist *, uint8_t);
int lpfc_issue_els_logo(struct lpfc_vport *, struct lpfc_nodelist *, uint8_t);
int lpfc_issue_els_npiv_logo(struct lpfc_vport *, struct lpfc_nodelist *);
int lpfc_issue_els_scr(struct lpfc_vport *, uint32_t, uint8_t);
+int lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry);
int lpfc_issue_fabric_reglogin(struct lpfc_vport *);
int lpfc_els_free_iocb(struct lpfc_hba *, struct lpfc_iocbq *);
int lpfc_ct_free_iocb(struct lpfc_hba *, struct lpfc_iocbq *);
@@ -357,6 +358,7 @@ void lpfc_mbox_timeout_handler(struct lpfc_hba *);
struct lpfc_nodelist *lpfc_findnode_did(struct lpfc_vport *, uint32_t);
struct lpfc_nodelist *lpfc_findnode_wwpn(struct lpfc_vport *,
struct lpfc_name *);
+struct lpfc_nodelist *lpfc_findnode_mapped(struct lpfc_vport *vport);
int lpfc_sli_issue_mbox_wait(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
@@ -2868,6 +2868,109 @@ lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
}
/**
+ * lpfc_issue_els_rscn - Issue a rscn to an node on a vport
+ * @vport: pointer to a host virtual N_Port data structure.
+ * @retry: number of retries to the command IOCB.
+ *
+ * This routine issues a RSCN to a fabric node on a @vport.
+ * The remote node @nportid is passed into the function. It
+ * or Pt2Pt topologies, the first MAPPED node will get an RSCN
+ * notification. For Fabric topologies, the well known SCR_DID
+ * gets notified for broadcast to all zone members.
+ *
+ * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
+ * will be incremented by 1 for holding the ndlp and the reference to ndlp
+ * will be stored into the context1 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)
+{
+ struct lpfc_hba *phba = vport->phba;
+ struct lpfc_iocbq *elsiocb;
+ uint8_t *pcmd;
+ uint16_t cmdsize;
+ uint32_t value, nportid;
+ struct lpfc_nodelist *ndlp;
+
+ /* Not supported for private loop */
+ if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
+ !(vport->fc_flag & FC_PUBLIC_LOOP))
+ return 1;
+
+ cmdsize = (sizeof(uint32_t) + sizeof(SCR));
+ if (vport->fc_flag & FC_PT2PT) {
+ ndlp = lpfc_findnode_mapped(vport);
+ if (!ndlp)
+ return 1;
+ } else {
+ nportid = SCR_DID;
+
+ ndlp = lpfc_findnode_did(vport, nportid);
+ if (!ndlp) {
+ ndlp = lpfc_nlp_init(vport, nportid);
+ if (!ndlp)
+ return 1;
+ lpfc_enqueue_node(vport, ndlp);
+ } else if (!NLP_CHK_NODE_ACT(ndlp)) {
+ ndlp = lpfc_enable_node(vport, ndlp,
+ NLP_STE_UNUSED_NODE);
+ if (!ndlp)
+ return 1;
+ }
+ }
+ elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
+ ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
+
+ if (!elsiocb) {
+ /* This will trigger the release of the node just
+ * allocated
+ */
+ lpfc_nlp_put(ndlp);
+ return 1;
+ }
+
+ pcmd = (uint8_t *)(((struct lpfc_dmabuf *)elsiocb->context2)->virt);
+
+ *((uint32_t *)(pcmd)) = ELS_CMD_RSCN_XMT;
+ pcmd += sizeof(uint32_t);
+
+ /* For SCR, remainder of payload is SCR parameter page */
+ memset(pcmd, 0, sizeof(struct fc_RSCN));
+ /* Generic Attribute of 0 is used */
+ value = vport->fc_myDID;
+
+ ((struct fc_RSCN *)pcmd)->NPort_ID = be32_to_cpu(value);
+
+ lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
+ "Issue RSCN: did:x%x",
+ ndlp->nlp_DID, 0, 0);
+
+ phba->fc_stat.elsXmitRSCN++;
+ elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
+ if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
+ IOCB_ERROR) {
+ /* The additional lpfc_nlp_put will cause the following
+ * lpfc_els_free_iocb routine to trigger the rlease of
+ * the node.
+ */
+ lpfc_nlp_put(ndlp);
+ lpfc_els_free_iocb(phba, elsiocb);
+ return 1;
+ }
+ /* This will cause the callback-function lpfc_cmpl_els_cmd to
+ * trigger the release of node.
+ */
+
+ lpfc_nlp_put(ndlp);
+ return 0;
+}
+
+/**
* lpfc_issue_els_scr - Issue a scr to an node on a vport
* @vport: pointer to a host virtual N_Port data structure.
* @nportid: N_Port identifier to the remote node.
@@ -6071,6 +6174,16 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
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);
+ return 0;
+ }
+
/* If we are about to begin discovery, just ACC the RSCN.
* Discovery processing will satisfy it.
*/
@@ -7886,6 +7999,7 @@ lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
elsiocb->context1 = lpfc_nlp_get(ndlp);
elsiocb->vport = vport;
+ /* Since RSCN can be varying lengths, lets mask that off */
if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
cmd &= ELS_CMD_MASK;
}
@@ -5119,6 +5119,41 @@ __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
}
struct lpfc_nodelist *
+lpfc_findnode_mapped(struct lpfc_vport *vport)
+{
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
+ struct lpfc_nodelist *ndlp;
+ uint32_t data1;
+ unsigned long iflags;
+
+ spin_lock_irqsave(shost->host_lock, iflags);
+
+ list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
+ if (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
+ ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
+ data1 = (((uint32_t)ndlp->nlp_state << 24) |
+ ((uint32_t)ndlp->nlp_xri << 16) |
+ ((uint32_t)ndlp->nlp_type << 8) |
+ ((uint32_t)ndlp->nlp_rpi & 0xff));
+ spin_unlock_irqrestore(shost->host_lock, iflags);
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
+ "2025 FIND node DID "
+ "Data: x%p x%x x%x x%x %p\n",
+ ndlp, ndlp->nlp_DID,
+ ndlp->nlp_flag, data1,
+ ndlp->active_rrqs_xri_bitmap);
+ return ndlp;
+ }
+ }
+ spin_unlock_irqrestore(shost->host_lock, iflags);
+
+ /* FIND node did <did> NOT FOUND */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
+ "2026 FIND mapped did NOT FOUND.\n");
+ return NULL;
+}
+
+struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
@@ -561,6 +561,8 @@ struct fc_vft_header {
/*
* Extended Link Service LS_COMMAND codes (Payload Word 0)
+ * The supported payload size is also hard-coded into this word
+ * when necessary.
*/
#ifdef __BIG_ENDIAN_BITFIELD
#define ELS_CMD_MASK 0xffff0000
@@ -597,6 +599,7 @@ struct fc_vft_header {
#define ELS_CMD_RPS 0x56000000
#define ELS_CMD_RPL 0x57000000
#define ELS_CMD_FAN 0x60000000
+#define ELS_CMD_RSCN_XMT 0x61040008
#define ELS_CMD_RSCN 0x61040000
#define ELS_CMD_SCR 0x62000000
#define ELS_CMD_RNID 0x78000000
@@ -637,6 +640,7 @@ struct fc_vft_header {
#define ELS_CMD_RPS 0x56
#define ELS_CMD_RPL 0x57
#define ELS_CMD_FAN 0x60
+#define ELS_CMD_RSCN_XMT 0x08000461
#define ELS_CMD_RSCN 0x0461
#define ELS_CMD_SCR 0x62
#define ELS_CMD_RNID 0x78
@@ -1088,6 +1092,11 @@ struct fc_lcb_res_frame {
uint16_t lcb_duration; /* LCB Payload Word 2, bit 15:0 */
};
+struct fc_RSCN { /* RSCN ELS frame */
+#define RSCN_EQ_PORT_ATTRIBUTE 2
+ uint32_t NPort_ID;
+};
+
/*
* Read Diagnostic Parameters (RDP) ELS frame.
*/
@@ -8761,6 +8761,7 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
if (pcmd && (*pcmd == ELS_CMD_FLOGI ||
*pcmd == ELS_CMD_SCR ||
+ *pcmd == ELS_CMD_RSCN_XMT ||
*pcmd == ELS_CMD_FDISC ||
*pcmd == ELS_CMD_LOGO ||
*pcmd == ELS_CMD_PLOGI)) {