util: added error code for ENOKEY

The kernel returns ENOKEY when the PSK TLS is missing, thus add the
corresponding ENVME error code.

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

Author: dwsuse

src/nvme/fabrics.c

@@ -831,6 +831,8 @@ static int __nvmf_add_ctrl(nvme_root_t r, const char *argstr)
 			return -ENVME_CONNECT_CONNREFUSED;
 		case EADDRNOTAVAIL:
 			return -ENVME_CONNECT_ADDRNOTAVAIL;
+		case ENOKEY:
+			return -ENVME_CONNECT_NOKEY;
 		default:
 			return -ENVME_CONNECT_WRITE;
 		}

src/nvme/util.c

@@ -626,6 +626,7 @@ static const char * const libnvme_status[] = {
 	[ENVME_CONNECT_CONNREFUSED] = "connection refused",
 	[ENVME_CONNECT_ADDRNOTAVAIL] = "cannot assign requested address",
 	[ENVME_CONNECT_IGNORED] = "connection ignored",
+	[ENVME_CONNECT_NOKEY] = "pre-shared TLS key is missing"
 };
 
 const char *nvme_errno_to_string(int status)

src/nvme/util.h

@@ -41,6 +41,7 @@
  * @ENVME_CONNECT_CONNREFUSED:	connection refused
  * @ENVME_CONNECT_ADDRNOTAVAIL:	cannot assign requested address
  * @ENVME_CONNECT_IGNORED:	connect attempt is ignored due to configuration
+ * @ENVME_CONNECT_NOKEY:	the TLS key is missing
  */
 enum nvme_connect_err {
 	ENVME_CONNECT_RESOLVE	= 1000,
@@ -63,6 +64,7 @@ enum nvme_connect_err {
 	ENVME_CONNECT_CONNREFUSED,
 	ENVME_CONNECT_ADDRNOTAVAIL,
 	ENVME_CONNECT_IGNORED,
+	ENVME_CONNECT_NOKEY,
 };
 
 /**