session: avoid vpp deadlock due to app crash

[vpp.git] / src / vnet / session / session_api.c

diff --git a/src/vnet/session/session_api.c b/src/vnet/session/session_api.c
index 7e7cffb..00e67dc 100644 (file)
--- a/src/vnet/session/session_api.c
+++ b/src/vnet/session/session_api.c
@@ -93,6 +93,12 @@ mq_try_lock_and_alloc_msg (svm_msg_q_t * app_mq, svm_msg_q_msg_t * msg)
                                                SVM_Q_NOWAIT, msg);
       if (!rv)
        return 0;
+      /*
+       * Break the loop if mq is full, usually this is because the
+       * app has crashed or is hanging on somewhere.
+       */
+      if (rv != -1)
+       break;
       try++;
       usleep (1);
     }