[SCSI] libfc: Register Symbolic Node Name (RSNN_NN)

Register the fc_host symbolic name as the symbolic node name
with the fabric name server.

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

3 files changed, 21 insertions, 0 deletions

diff --git a/include/scsi/fc/fc_ns.h b/include/scsi/fc/fc_ns.h
index 790d7b97d4bc..fa8283056325 100644
--- a/include/scsi/fc/fc_ns.h
+++ b/include/scsi/fc/fc_ns.h
@@ -47,6 +47,7 @@ enum fc_ns_req {
         FC_NS_RFT_ID =  0x0217,         /* reg FC4 type for ID */
         FC_NS_RPN_ID =  0x0212,         /* reg port name for ID */
         FC_NS_RNN_ID =  0x0213,         /* reg node name for ID */
+        FC_NS_RSNN_NN = 0x0239,         /* reg symbolic node name */
 };
 
 /*
@@ -156,4 +157,13 @@ struct fc_ns_rn_id {
         __be64          fr_wwn;         /* node name or port name */
 } __attribute__((__packed__));
 
+/*
+ * RSNN_NN request - register symbolic node name
+ */
+struct fc_ns_rsnn {
+        __be64          fr_wwn;         /* node name */
+        __u8            fr_name_len;
+        char            fr_name[];
+} __attribute__((__packed__));
+
 #endif /* _FC_NS_H_ */
diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index ad13cb1c3eec..89981afba72d 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -33,6 +33,7 @@ struct fc_ct_req {
                 struct fc_ns_rn_id  rn;
                 struct fc_ns_rft rft;
                 struct fc_ns_fid fid;
+                struct fc_ns_rsnn snn;
         } payload;
 };
 
@@ -136,6 +137,15 @@ static inline int fc_ct_fill(struct fc_lport *lport,
                 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
                 break;
 
+        case FC_NS_RSNN_NN:
+                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn));
+                put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
+                strncpy(ct->payload.snn.fr_name,
+                        fc_host_symbolic_name(lport->host), 255);
+                ct->payload.snn.fr_name_len =
+                        strnlen(ct->payload.snn.fr_name, 255);
+                break;
+
         default:
                 return -EINVAL;
         }
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 3d22dfd67209..1a632069c402 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -62,6 +62,7 @@ enum fc_lport_state {
         LPORT_ST_FLOGI,
         LPORT_ST_DNS,
         LPORT_ST_RNN_ID,
+        LPORT_ST_RSNN_NN,
         LPORT_ST_RFT_ID,
         LPORT_ST_SCR,
         LPORT_ST_READY,