From: Andreas Schultz <andreas.schultz@travelping.com>
Date: Tue, 17 Jul 2018 09:10:16 +0000 (+0200)
Subject: Fix GTP-U header in 4x IPv4 vector encapsulation
X-Git-Tag: v18.10-rc1~593
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=96cc67dd80e7fbf56071925afff056929965af6d

Fix GTP-U header in 4x IPv4 vector encapsulation

The fourth GTP-U packet had a wrong reference, leading to data
corruption.

Change-Id: Id82f87368183d5e8b7047133c5ea799f2a9cb43c
Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com>
---

diff --git a/src/plugins/gtpu/gtpu_encap.c b/src/plugins/gtpu/gtpu_encap.c
index 8ad53c537a6..5c37f4db306 100644
--- a/src/plugins/gtpu/gtpu_encap.c
+++ b/src/plugins/gtpu/gtpu_encap.c
@@ -308,7 +308,7 @@ gtpu_encap_inline (vlib_main_t * vm,
 	      new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2)
 					     - sizeof (*ip4_2) - sizeof(*udp2));
 	      gtpu2->length = new_l2;
-	      gtpu3 = (gtpu_header_t *)(udp1+3);
+	      gtpu3 = (gtpu_header_t *)(udp3+1);
 	      new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3)
 					     - sizeof (*ip4_3) - sizeof(*udp3));
 	      gtpu3->length = new_l3;