clock: Don't allow COMMAND action on non-UDS port.

No COMMAND actions are currently supported, but check the port early in clock_manage() before reaching port_manage(). Signed-off-by: Miroslav Lichvar <[email protected]>
rtripathi95051 · Feb 13, 2021 · 942cf52 · 942cf52
1 parent 1e2b63c
commit 942cf52
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/clock.c b/clock.c
@@ -1422,6 +1422,11 @@ int clock_manage(struct clock *c, struct port *p, struct ptp_message *msg)
 			return changed;
 		break;
 	case COMMAND:
+		if (p != c->uds_port) {
+			/* Sorry, only allowed on the UDS port. */
+			clock_management_send_error(p, msg, TLV_NOT_SUPPORTED);
+			return changed;
+		}
 		break;
 	default:
 		return changed;