zebra: only perform shutdown signal processing once

[mirror_frr.git] / zebra / main.c

diff --git a/zebra/main.c b/zebra/main.c
index 955ab0445e99fc9831bd9cd9b61ab3eebd9ff10f..253b3087fbf8a88899d62e2070ce0abb6ec2b21d 100644 (file)
--- a/zebra/main.c
+++ b/zebra/main.c
@@ -142,6 +142,12 @@ static void sigint(void)
        struct zebra_vrf *zvrf;
        struct listnode *ln, *nn;
        struct zserv *client;
+       static bool sigint_done;
+
+       if (sigint_done)
+               return;
+
+       sigint_done = true;
 
        zlog_notice("Terminating on signal");
 
@@ -174,11 +180,17 @@ static void sigint(void)
 
        list_delete(&zebrad.client_list);
 
-       /* Indicate that all new dplane work has been enqueued */
+       /* Indicate that all new dplane work has been enqueued. When that
+        * work is complete, the dataplane will enqueue an event
+        * with the 'finalize' function.
+        */
        zebra_dplane_finish();
 }
 
-/* TODO */
+/*
+ * Final shutdown step for the zebra main thread. This is run after all
+ * async update processing has completed.
+ */
 int zebra_finalize(struct thread *dummy)
 {
        zlog_info("Zebra final shutdown");