[SCSI] libfc: Move the port_id into lport

This patch creates a port_id member in struct fc_lport.
This allows libfc to just deal with fc_lport instances
instead of calling into the fc_host to get the port_id.

This change helps in only using symbols necessary for
operation from the libfc structures. libfc still needs
to change the fc_host_port_id() if the port_id changes
so the presentation layer (scsi_transport_fc) can provide
the user with the correct value, but libfc shouldn't
rely on the presentation layer for operational values.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

2 files changed, 9 insertions, 11 deletions

diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index 8eb0a0f..9b4867c 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -74,7 +74,7 @@ static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
 	adisc->adisc_cmd = ELS_ADISC;
 	put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
 	put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
-	hton24(adisc->adisc_port_id, fc_host_port_id(lport->host));
+	hton24(adisc->adisc_port_id, lport->port_id);
 }
 
 /**
@@ -127,15 +127,13 @@ static inline int fc_ct_fill(struct fc_lport *lport,
 
 	case FC_NS_RFT_ID:
 		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
-		hton24(ct->payload.rft.fid.fp_fid,
-		       fc_host_port_id(lport->host));
+		hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
 		ct->payload.rft.fts = lport->fcts;
 		break;
 
 	case FC_NS_RFF_ID:
 		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
-		hton24(ct->payload.rff.fr_fid.fp_fid,
-		       fc_host_port_id(lport->host));
+		hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
 		ct->payload.rff.fr_type = FC_TYPE_FCP;
 		if (lport->service_params & FCP_SPPF_INIT_FCN)
 			ct->payload.rff.fr_feat = FCP_FEAT_INIT;
@@ -145,16 +143,14 @@ static inline int fc_ct_fill(struct fc_lport *lport,
 
 	case FC_NS_RNN_ID:
 		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
-		hton24(ct->payload.rn.fr_fid.fp_fid,
-		       fc_host_port_id(lport->host));
+		hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
 		put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
 		break;
 
 	case FC_NS_RSPN_ID:
 		len = strnlen(fc_host_symbolic_name(lport->host), 255);
 		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
-		hton24(ct->payload.spn.fr_fid.fp_fid,
-		       fc_host_port_id(lport->host));
+		hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
 		strncpy(ct->payload.spn.fr_name,
 			fc_host_symbolic_name(lport->host), len);
 		ct->payload.spn.fr_name_len = len;
@@ -268,7 +264,7 @@ static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
 	logo = fc_frame_payload_get(fp, sizeof(*logo));
 	memset(logo, 0, sizeof(*logo));
 	logo->fl_cmd = ELS_LOGO;
-	hton24(logo->fl_n_port_id, fc_host_port_id(lport->host));
+	hton24(logo->fl_n_port_id, lport->port_id);
 	logo->fl_n_port_wwn = htonll(lport->wwpn);
 }
 
@@ -295,7 +291,7 @@ static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
 	rec = fc_frame_payload_get(fp, sizeof(*rec));
 	memset(rec, 0, sizeof(*rec));
 	rec->rec_cmd = ELS_REC;
-	hton24(rec->rec_s_id, fc_host_port_id(lport->host));
+	hton24(rec->rec_s_id, lport->port_id);
 	rec->rec_ox_id = htons(ep->oxid);
 	rec->rec_rx_id = htons(ep->rxid);
 }
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 1755fa7..7495c0b 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -780,6 +780,7 @@ struct fc_disc {
  * @dev_stats:             FCoE device stats (TODO: libfc should not be
  *                         FCoE aware)
  * @retry_count:           Number of retries in the current state
+ * @port_id:               FC Port ID
  * @wwpn:                  World Wide Port Name
  * @wwnn:                  World Wide Node Name
  * @service_params:        Common service parameters
@@ -826,6 +827,7 @@ struct fc_lport {
 	u8			       retry_count;
 
 	/* Fabric information */
+	u32                            port_id;
 	u64			       wwpn;
 	u64			       wwnn;
 	unsigned int		       service_params;