util: Add ignored error code

When libnvme ignores a connection attempt via the 'application' context
tracking return an unique error code to allow proper filtering on the
caller side.

Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

src/nvme/fabrics.c

@@ -871,7 +871,7 @@ int nvmf_add_ctrl(nvme_host_t h, nvme_ctrl_t c,
 		if (!app || strcmp(app, root_app)) {
 			nvme_msg(h->r, LOG_INFO, "skip %s, not managed by %s\n",
 				 nvme_subsystem_get_nqn(s), root_app);
-			errno = ENVME_CONNECT_INVAL;
+			errno = ENVME_CONNECT_IGNORED;
 			return -1;
 		}
 	}

src/nvme/util.h

@@ -38,6 +38,7 @@
  * @ENVME_CONNECT_OPNOTSUPP:	not supported
  * @ENVME_CONNECT_CONNREFUSED:	connection refused
  * @ENVME_CONNECT_ADDRNOTAVAIL:	cannot assign requested address
+ * @ENVME_CONNECT_IGNORED:	connect attempt is ignored due to configuration
  */
 enum nvme_connect_err {
 	ENVME_CONNECT_RESOLVE	= 1000,
@@ -59,6 +60,7 @@ enum nvme_connect_err {
 	ENVME_CONNECT_OPNOTSUPP,
 	ENVME_CONNECT_CONNREFUSED,
 	ENVME_CONNECT_ADDRNOTAVAIL,
+	ENVME_CONNECT_IGNORED,
 };
 
 /**