X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvcl%2Fvcl_private.c;fp=src%2Fvcl%2Fvcl_private.c;h=4af79e9ebb0096ef4cd3824e62c9387060a5dcee;hb=0eff4e722c8565aebf8f004a30c73a64b0b921e4;hp=059acdf97ebc57a218ea500bdeec927782efe3af;hpb=e9ea7d5216ce462481ce34e54633017fd31e70db;p=vpp.git

diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index 059acdf97eb..4af79e9ebb0 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -341,7 +341,8 @@ vcl_session_read_ready (vcl_session_t * s)
 	  if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq)
 	    return 0;
 
-	  return ph.data_length;
+	  /* Allow zero legth datagrams */
+	  return ph.data_length ? ph.data_length : 1;
 	}
 
       return svm_fifo_max_dequeue_cons (s->rx_fifo);