commit da6e11b47d47c764b11304524de559dda0d0d223
author Ole Troan <ot@cisco.com> Wed May 23 11:21:42 2018 +0200
committer Florin Coras <florin.coras@gmail.com> Wed May 23 16:40:39 2018 +0000
tree e219f5491c6253bcdae04969d6a2321183f00bef
parent 8a9c8f1412cb1258340b18a8eb622a835ef3c37b

VPP-1283: IPv6 PMTU missing MTU value in ICMP6 message.

Fix GRE/IPv6 setting of ip->payload_length (which has never worked).

Change-Id: Ie68f1cc7bbb70489d6ec97356132c783f2345e1e
Signed-off-by: Ole Troan <ot@cisco.com>

src/vnet/gre/gre.c

diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c
index 0b8d2cc..e82befe 100644
--- a/src/vnet/gre/gre.c
+++ b/src/vnet/gre/gre.c
@@ -292,8 +292,8 @@
   /* Fixup the payload length field in the GRE tunnel encap that was applied
    * at the midchain node */
   ip0->payload_length =
-    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0))
-    - sizeof (*ip0);
+    clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+			  sizeof (*ip0));
 }
 
 void