udp: fix optimistic assert for UDP RX

[vpp.git] / src / vnet / udp / udp_input.c

diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index d5dd159..6e5ed15 100644 (file)
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -161,7 +161,11 @@ udp_connection_enqueue (udp_connection_t * uc0, session_t * s0,
                                                 TRANSPORT_PROTO_UDP,
                                                 queue_event);
     }
-  ASSERT (wrote0 > 0);
+
+  /* In some rare cases, session_enqueue_dgram_connection can fail because a
+   * chunk cannot be allocated in the RX FIFO */
+  if (PREDICT_FALSE (wrote0 == 0))
+    *error0 = UDP_ERROR_FIFO_NOMEM;
 
 unlock_rx_lock: