From: Florin Coras <fcoras@cisco.com>
Date: Mon, 28 Oct 2019 20:22:37 +0000 (-0700)
Subject: vcl: handle rx notifications on reused sessions
X-Git-Tag: v19.08.2~138
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=2172c35eb4738e5dd147fc1205f2719eeb3072d0;p=vpp.git

vcl: handle rx notifications on reused sessions

Type: fix

Ignore events on sessions that have been reused but not fully
initialized.

Change-Id: Ided020eb5245d665d0a2e4a9e1f8a6dddebae009
Signed-off-by: Florin Coras <fcoras@cisco.com>
(cherry picked from commit bd52e46fe8193182cce150292e9df1c517795011)
---

diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index 72ec4f4b966..70df75010c4 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -1971,6 +1971,8 @@ vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
 }
 
 #define vcl_fifo_rx_evt_valid_or_break(_s)				\
+if (PREDICT_FALSE (!_s->rx_fifo))					\
+  break;								\
 if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo)))			\
   {									\
     if (!vcl_session_is_ct (_s))					\