X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fapplication_interface.h;h=d09432d0b522209c30afc7d3ebb4f7706c404f0f;hb=ba78e2380e86926c7e29bc3538eb7ac4e78699b1;hp=b410c638155003ea98a6d99cbec6b1b7c74c8a79;hpb=59fea5a6a3fafe0a5a0d2f543db53af790013e3a;p=vpp.git

diff --git a/src/vnet/session/application_interface.h b/src/vnet/session/application_interface.h
index b410c638155..d09432d0b52 100644
--- a/src/vnet/session/application_interface.h
+++ b/src/vnet/session/application_interface.h
@@ -694,8 +694,13 @@ app_recv_dgram_raw (svm_fifo_t * f, u8 * buf, u32 len,
 
   svm_fifo_peek (f, 0, sizeof (ph), (u8 *) & ph);
   ASSERT (ph.data_length >= ph.data_offset);
-  svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
 
+  /* Check if we have the full dgram */
+  if (max_deq < (ph.data_length + SESSION_CONN_HDR_LEN)
+      && len >= ph.data_length)
+    return 0;
+
+  svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
   len = clib_min (len, ph.data_length - ph.data_offset);
   rv = svm_fifo_peek (f, ph.data_offset + SESSION_CONN_HDR_LEN, len, buf);
   if (peek)