[SCSI] libfc: improve debug messages for ELS response handlers
Improve lport and rport debug messages to indicate whether
the response is LS_ACC, LS_RJT, closed, or timeout.
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>
diff --git a/drivers/scsi/libfc/fc_elsct.c b/drivers/scsi/libfc/fc_elsct.c
index 5e8b011..d655924 100644
--- a/drivers/scsi/libfc/fc_elsct.c
+++ b/drivers/scsi/libfc/fc_elsct.c
@@ -70,3 +70,41 @@
return 0;
}
EXPORT_SYMBOL(fc_elsct_init);
+
+/**
+ * fc_els_resp_type() - return string describing ELS response for debug.
+ * @fp: frame pointer with possible error code.
+ */
+const char *fc_els_resp_type(struct fc_frame *fp)
+{
+ const char *msg;
+ if (IS_ERR(fp)) {
+ switch (-PTR_ERR(fp)) {
+ case FC_NO_ERR:
+ msg = "response no error";
+ break;
+ case FC_EX_TIMEOUT:
+ msg = "response timeout";
+ break;
+ case FC_EX_CLOSED:
+ msg = "response closed";
+ break;
+ default:
+ msg = "response unknown error";
+ break;
+ }
+ } else {
+ 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;
+ }
+ }
+ return msg;
+}