wireguard: testing alternative timer dispatch

[vpp.git] / src / plugins / wireguard / wireguard_timer.c

diff --git a/src/plugins/wireguard/wireguard_timer.c b/src/plugins/wireguard/wireguard_timer.c
old mode 100755 (executable)
new mode 100644 (file)
index 7c09617..b245b85
--- a/src/plugins/wireguard/wireguard_timer.c
+++ b/src/plugins/wireguard/wireguard_timer.c
@@ -62,7 +62,6 @@ start_timer_thread_fn (void *arg)
 {
   wg_timers_args *a = arg;
   wg_peer_t *peer = wg_peer_get (a->peer_idx);
-
   start_timer (peer, a->timer_id, a->interval_ticks);
   return 0;
 }
@@ -75,8 +74,11 @@ start_timer_from_mt (u32 peer_idx, u32 timer_id, u32 interval_ticks)
     .timer_id = timer_id,
     .interval_ticks = interval_ticks,
   };
-
-  vl_api_rpc_call_main_thread (start_timer_thread_fn, (u8 *) & a, sizeof (a));
+  wg_peer_t *peer = wg_peer_get (peer_idx);
+  if (PREDICT_FALSE (!peer->timers_dispatched[timer_id]))
+    if (!clib_atomic_cmp_and_swap (&peer->timers_dispatched[timer_id], 0, 1))
+      vl_api_rpc_call_main_thread (start_timer_thread_fn, (u8 *) &a,
+                                  sizeof (a));
 }
 
 static inline u32
@@ -295,6 +297,9 @@ expired_timer_callback (u32 * expired_timers)
 
       peer = wg_peer_get (pool_index);
       peer->timers[timer_id] = ~0;
+
+      /* Under barrier, no sync needed */
+      peer->timers_dispatched[timer_id] = 0;
     }
 
   for (i = 0; i < vec_len (expired_timers); i++)