[SCSI] libfc: register FC4 features with the FC switch

Customers and certification tests have pointed out that we don't
show up on the switch management software as an initiator.

On some MDS switches 'show fcns database' command shows libfc
initiators as 'fcp' not 'fcp:init' like other initiators.

On others switches, I think the switch gets the features by doing a PRLI,
but it may be only certain models or under certain configurations.

Fix this by registering our FC4 features with the RFF_ID CT request
after local port login and after the RFT_ID.

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

1 files changed, 12 insertions, 1 deletions

diff --git a/include/scsi/fc/fc_ns.h b/include/scsi/fc/fc_ns.h
index f4d354eb26b9..e7d3ac497d7d 100644
--- a/include/scsi/fc/fc_ns.h
+++ b/include/scsi/fc/fc_ns.h
@@ -46,10 +46,11 @@ enum fc_ns_req {
         FC_NS_GID_FT =  0x0171,         /* get IDs by FC4 type */
         FC_NS_GPN_FT =  0x0172,         /* get port names by FC4 type */
         FC_NS_GID_PT =  0x01a1,         /* get IDs by port type */
-        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_RFT_ID =  0x0217,         /* reg FC4 type for ID */
         FC_NS_RSPN_ID = 0x0218,         /* reg symbolic port name */
+        FC_NS_RFF_ID =  0x021f,         /* reg FC4 Features for ID */
         FC_NS_RSNN_NN = 0x0239,         /* reg symbolic node name */
 };
 
@@ -178,4 +179,14 @@ struct fc_ns_rspn {
         char            fr_name[];
 } __attribute__((__packed__));
 
+/*
+ * RFF_ID request - register FC-4 Features for ID.
+ */
+struct fc_ns_rff_id {
+        struct fc_ns_fid fr_fid;        /* port ID object */
+        __u8            fr_resvd[2];
+        __u8            fr_feat;        /* FC-4 Feature bits */
+        __u8            fr_type;        /* FC-4 type */
+} __attribute__((__packed__));
+
 #endif /* _FC_NS_H_ */