1 files changed, 60 insertions, 19 deletions

diff --git a/drivers/scsi/libfc/fc_elsct.c b/drivers/scsi/libfc/fc_elsct.c
index 5cfa68732e9d..53748724f2c5 100644
--- a/drivers/scsi/libfc/fc_elsct.c
+++ b/drivers/scsi/libfc/fc_elsct.c
@@ -28,17 +28,22 @@
 #include <scsi/libfc.h>
 #include <scsi/fc_encode.h>
 
-/*
- * fc_elsct_send - sends ELS/CT frame
+/**
+ * fc_elsct_send() - Send an ELS or CT frame
+ * @lport:      The local port to send the frame on
+ * @did:        The destination ID for the frame
+ * @fp:         The frame to be sent
+ * @op:         The operational code
+ * @resp:       The callback routine when the response is received
+ * @arg:        The argument to pass to the response callback routine
+ * @timer_msec: The timeout period for the frame (in msecs)
  */
-static struct fc_seq *fc_elsct_send(struct fc_lport *lport,
-                                    u32 did,
-                                    struct fc_frame *fp,
-                                    unsigned int op,
-                                    void (*resp)(struct fc_seq *,
-                                                 struct fc_frame *fp,
-                                                 void *arg),
-                                    void *arg, u32 timer_msec)
+struct fc_seq *fc_elsct_send(struct fc_lport *lport, u32 did,
+                             struct fc_frame *fp, unsigned int op,
+                             void (*resp)(struct fc_seq *,
+                                          struct fc_frame *,
+                                          void *),
+                             void *arg, u32 timer_msec)
 {
         enum fc_rctl r_ctl;
         enum fc_fh_type fh_type;
@@ -53,15 +58,22 @@ static struct fc_seq *fc_elsct_send(struct fc_lport *lport,
                 did = FC_FID_DIR_SERV;
         }
 
-        if (rc)
+        if (rc) {
+                fc_frame_free(fp);
                 return NULL;
+        }
 
         fc_fill_fc_hdr(fp, r_ctl, did, fc_host_port_id(lport->host), fh_type,
                        FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0);
 
         return lport->tt.exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
 }
+EXPORT_SYMBOL(fc_elsct_send);
 
+/**
+ * fc_elsct_init() - Initialize the ELS/CT layer
+ * @lport: The local port to initialize the ELS/CT layer for
+ */
 int fc_elsct_init(struct fc_lport *lport)
 {
         if (!lport->tt.elsct_send)
@@ -72,12 +84,15 @@ int fc_elsct_init(struct fc_lport *lport)
 EXPORT_SYMBOL(fc_elsct_init);
 
 /**
- * fc_els_resp_type() - return string describing ELS response for debug.
- * @fp: frame pointer with possible error code.
+ * fc_els_resp_type() - Return a string describing the ELS response
+ * @fp: The frame pointer or possible error code
  */
 const char *fc_els_resp_type(struct fc_frame *fp)
 {
         const char *msg;
+        struct fc_frame_header *fh;
+        struct fc_ct_hdr *ct;
+
         if (IS_ERR(fp)) {
                 switch (-PTR_ERR(fp)) {
                 case FC_NO_ERR:
@@ -94,15 +109,41 @@ const char *fc_els_resp_type(struct fc_frame *fp)
                         break;
                 }
         } else {
-                switch (fc_frame_payload_op(fp)) {
-                case ELS_LS_ACC:
-                        msg = "accept";
+                fh = fc_frame_header_get(fp);
+                switch (fh->fh_type) {
+                case FC_TYPE_ELS:
+                        switch (fc_frame_payload_op(fp)) {
+                        case ELS_LS_ACC:
+                                msg = "accept";
+                                break;
+                        case ELS_LS_RJT:
+                                msg = "reject";
+                                break;
+                        default:
+                                msg = "response unknown ELS";
+                                break;
+                        }
                         break;
-                case ELS_LS_RJT:
-                        msg = "reject";
+                case FC_TYPE_CT:
+                        ct = fc_frame_payload_get(fp, sizeof(*ct));
+                        if (ct) {
+                                switch (ntohs(ct->ct_cmd)) {
+                                case FC_FS_ACC:
+                                        msg = "CT accept";
+                                        break;
+                                case FC_FS_RJT:
+                                        msg = "CT reject";
+                                        break;
+                                default:
+                                        msg = "response unknown CT";
+                                        break;
+                                }
+                        } else {
+                                msg = "short CT response";
+                        }
                         break;
                 default:
-                        msg = "response unknown ELS";
+                        msg = "response not ELS or CT";
                         break;
                 }
         }