1 files changed, 93 insertions, 92 deletions

diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index d014b285cd1a..e121ff92c8ea 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -63,7 +63,7 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *);
 static void fc_rport_enter_ready(struct fc_rport_priv *);
 static void fc_rport_enter_logo(struct fc_rport_priv *);
 
-static void fc_rport_recv_plogi_req(struct fc_rport_priv *,
+static void fc_rport_recv_plogi_req(struct fc_lport *,
 				    struct fc_seq *, struct fc_frame *);
 static void fc_rport_recv_prli_req(struct fc_rport_priv *,
 				   struct fc_seq *, struct fc_frame *);
@@ -576,15 +576,7 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
 			csp_seq = cssp_seq;
 		rdata->max_seq = csp_seq;
 		rdata->maxframe_size = fc_plogi_get_maxframe(plp, lport->mfs);
-
-		/*
-		 * If the rport is one of the well known addresses
-		 * we skip PRLI and RTV and go straight to READY.
-		 */
-		if (rdata->ids.port_id >= FC_FID_DOM_MGR)
-			fc_rport_enter_ready(rdata);
-		else
-			fc_rport_enter_prli(rdata);
+		fc_rport_enter_prli(rdata);
 	} else
 		fc_rport_error_retry(rdata, fp);
 
@@ -763,6 +755,15 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
 	} *pp;
 	struct fc_frame *fp;
 
+	/*
+	 * If the rport is one of the well known addresses
+	 * we skip PRLI and RTV and go straight to READY.
+	 */
+	if (rdata->ids.port_id >= FC_FID_DOM_MGR) {
+		fc_rport_enter_ready(rdata);
+		return;
+	}
+
 	FC_RPORT_DBG(rdata, "Port entered PRLI state from %s state\n",
 		     fc_rport_state(rdata));
 
@@ -929,6 +930,15 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
 	els_data.explan = ELS_EXPL_NONE;
 	els_data.reason = ELS_RJT_NONE;
 
+	op = fc_frame_payload_op(fp);
+	switch (op) {
+	case ELS_PLOGI:
+		fc_rport_recv_plogi_req(lport, sp, fp);
+		return;
+	default:
+		break;
+	}
+
 	fh = fc_frame_header_get(fp);
 	s_id = ntoh24(fh->fh_s_id);
 
@@ -944,11 +954,7 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
 	mutex_lock(&rdata->rp_mutex);
 	mutex_unlock(&lport->disc.disc_mutex);
 
-	op = fc_frame_payload_op(fp);
 	switch (op) {
-	case ELS_PLOGI:
-		fc_rport_recv_plogi_req(rdata, sp, fp);
-		break;
 	case ELS_PRLI:
 		fc_rport_recv_prli_req(rdata, sp, fp);
 		break;
@@ -977,48 +983,56 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
 
 /**
  * fc_rport_recv_plogi_req() - Handle incoming Port Login (PLOGI) request
- * @rdata: private remote port data
+ * @lport: local port
  * @sp: current sequence in the PLOGI exchange
  * @fp: PLOGI request frame
  *
- * Locking Note: The rport lock is exected to be held before calling
- * this function.
+ * Locking Note: The rport lock is held before calling this function.
  */
-static void fc_rport_recv_plogi_req(struct fc_rport_priv *rdata,
+static void fc_rport_recv_plogi_req(struct fc_lport *lport,
 				    struct fc_seq *sp, struct fc_frame *rx_fp)
 {
-	struct fc_lport *lport = rdata->local_port;
+	struct fc_disc *disc;
+	struct fc_rport_priv *rdata;
 	struct fc_frame *fp = rx_fp;
 	struct fc_exch *ep;
 	struct fc_frame_header *fh;
 	struct fc_els_flogi *pl;
 	struct fc_seq_els_data rjt_data;
-	u32 sid;
-	u64 wwpn;
-	u64 wwnn;
-	enum fc_els_rjt_reason reject = 0;
-	u32 f_ctl;
-	rjt_data.fp = NULL;
+	u32 sid, f_ctl;
 
+	rjt_data.fp = NULL;
 	fh = fc_frame_header_get(fp);
+	sid = ntoh24(fh->fh_s_id);
 
-	FC_RPORT_DBG(rdata, "Received PLOGI request while in state %s\n",
-		     fc_rport_state(rdata));
+	FC_RPORT_ID_DBG(lport, sid, "Received PLOGI request\n");
 
-	sid = ntoh24(fh->fh_s_id);
 	pl = fc_frame_payload_get(fp, sizeof(*pl));
 	if (!pl) {
-		FC_RPORT_DBG(rdata, "Received PLOGI too short\n");
-		WARN_ON(1);
-		/* XXX TBD: send reject? */
-		fc_frame_free(fp);
-		return;
+		FC_RPORT_ID_DBG(lport, sid, "Received PLOGI too short\n");
+		rjt_data.reason = ELS_RJT_PROT;
+		rjt_data.explan = ELS_EXPL_INV_LEN;
+		goto reject;
+	}
+
+	disc = &lport->disc;
+	mutex_lock(&disc->disc_mutex);
+	rdata = lport->tt.rport_create(lport, sid);
+	if (!rdata) {
+		mutex_unlock(&disc->disc_mutex);
+		rjt_data.reason = ELS_RJT_UNAB;
+		rjt_data.explan = ELS_EXPL_INSUF_RES;
+		goto reject;
 	}
-	wwpn = get_unaligned_be64(&pl->fl_wwpn);
-	wwnn = get_unaligned_be64(&pl->fl_wwnn);
+
+	mutex_lock(&rdata->rp_mutex);
+	mutex_unlock(&disc->disc_mutex);
+
+	rdata->ids.port_name = get_unaligned_be64(&pl->fl_wwpn);
+	rdata->ids.node_name = get_unaligned_be64(&pl->fl_wwnn);
 
 	/*
-	 * If the session was just created, possibly due to the incoming PLOGI,
+	 * If the rport was just created, possibly due to the incoming PLOGI,
 	 * set the state appropriately and accept the PLOGI.
 	 *
 	 * If we had also sent a PLOGI, and if the received PLOGI is from a
@@ -1030,72 +1044,58 @@ static void fc_rport_recv_plogi_req(struct fc_rport_priv *rdata,
 	 */
 	switch (rdata->rp_state) {
 	case RPORT_ST_INIT:
-		FC_RPORT_DBG(rdata, "Received PLOGI, wwpn %llx state INIT "
-			     "- reject\n", (unsigned long long)wwpn);
-		reject = ELS_RJT_UNSUP;
+		FC_RPORT_DBG(rdata, "Received PLOGI in INIT state\n");
 		break;
 	case RPORT_ST_PLOGI:
-		FC_RPORT_DBG(rdata, "Received PLOGI in PLOGI state %d\n",
-			     rdata->rp_state);
-		if (wwpn < lport->wwpn)
-			reject = ELS_RJT_INPROG;
+		FC_RPORT_DBG(rdata, "Received PLOGI in PLOGI state\n");
+		if (rdata->ids.port_name < lport->wwpn) {
+			mutex_unlock(&rdata->rp_mutex);
+			rjt_data.reason = ELS_RJT_INPROG;
+			rjt_data.explan = ELS_EXPL_NONE;
+			goto reject;
+		}
 		break;
 	case RPORT_ST_PRLI:
 	case RPORT_ST_READY:
-		FC_RPORT_DBG(rdata, "Received PLOGI in logged-in state %d "
-			     "- ignored for now\n", rdata->rp_state);
-		/* XXX TBD - should reset */
 		break;
 	case RPORT_ST_DELETE:
 	default:
-		FC_RPORT_DBG(rdata, "Received PLOGI in unexpected "
-			     "state %d\n", rdata->rp_state);
-		fc_frame_free(fp);
-		return;
-		break;
+		FC_RPORT_DBG(rdata, "Received PLOGI in unexpected state %d\n",
+			     rdata->rp_state);
+		fc_frame_free(rx_fp);
+		goto out;
 	}
 
-	if (reject) {
-		rjt_data.reason = reject;
-		rjt_data.explan = ELS_EXPL_NONE;
-		lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
-		fc_frame_free(fp);
-	} else {
-		fp = fc_frame_alloc(lport, sizeof(*pl));
-		if (fp == NULL) {
-			fp = rx_fp;
-			rjt_data.reason = ELS_RJT_UNAB;
-			rjt_data.explan = ELS_EXPL_NONE;
-			lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
-			fc_frame_free(fp);
-		} else {
-			sp = lport->tt.seq_start_next(sp);
-			WARN_ON(!sp);
-			rdata->ids.port_name = wwpn;
-			rdata->ids.node_name = wwnn;
-
-			/*
-			 * Get session payload size from incoming PLOGI.
-			 */
-			rdata->maxframe_size =
-				fc_plogi_get_maxframe(pl, lport->mfs);
-			fc_frame_free(rx_fp);
-			fc_plogi_fill(lport, fp, ELS_LS_ACC);
-
-			/*
-			 * Send LS_ACC.	 If this fails,
-			 * the originator should retry.
-			 */
-			f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
-			f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
-			ep = fc_seq_exch(sp);
-			fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
-				       FC_TYPE_ELS, f_ctl, 0);
-			lport->tt.seq_send(lport, sp, fp);
-			if (rdata->rp_state == RPORT_ST_PLOGI)
-				fc_rport_enter_prli(rdata);
-		}
-	}
+	/*
+	 * Get session payload size from incoming PLOGI.
+	 */
+	rdata->maxframe_size = fc_plogi_get_maxframe(pl, lport->mfs);
+	fc_frame_free(rx_fp);
+
+	/*
+	 * Send LS_ACC.	 If this fails, the originator should retry.
+	 */
+	sp = lport->tt.seq_start_next(sp);
+	if (!sp)
+		goto out;
+	fp = fc_frame_alloc(lport, sizeof(*pl));
+	if (!fp)
+		goto out;
+
+	fc_plogi_fill(lport, fp, ELS_LS_ACC);
+	f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT;
+	ep = fc_seq_exch(sp);
+	fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
+		       FC_TYPE_ELS, f_ctl, 0);
+	lport->tt.seq_send(lport, sp, fp);
+	fc_rport_enter_prli(rdata);
+out:
+	mutex_unlock(&rdata->rp_mutex);
+	return;
+
+reject:
+	lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
+	fc_frame_free(fp);
 }
 
 /**
@@ -1138,6 +1138,7 @@ static void fc_rport_recv_prli_req(struct fc_rport_priv *rdata,
 
 	switch (rdata->rp_state) {
 	case RPORT_ST_PRLI:
+	case RPORT_ST_RTV:
 	case RPORT_ST_READY:
 		reason = ELS_RJT_NONE;
 		break;