From 1d609270b61b551b9e81db0f573e861dedc1d3cf Mon Sep 17 00:00:00 2001
From: John Lo <loj@cisco.com>
Date: Fri, 31 Jan 2020 23:48:30 -0500
Subject: ipsec: set l2_len for GRE-TEB tunnel decap

Type: fix
Ticket: VPP-1831

Signed-off-by: John Lo <loj@cisco.com>
Change-Id: I655964b22021ac38cbced577091a1156286d4fd6
---
 src/vnet/ipsec/esp_decrypt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c
index ee53b018552..56724c00239 100644
--- a/src/vnet/ipsec/esp_decrypt.c
+++ b/src/vnet/ipsec/esp_decrypt.c
@@ -18,6 +18,7 @@
 #include <vnet/vnet.h>
 #include <vnet/api_errno.h>
 #include <vnet/ip/ip.h>
+#include <vnet/l2/l2_input.h>
 
 #include <vnet/ipsec/ipsec.h>
 #include <vnet/ipsec/esp.h>
@@ -506,6 +507,7 @@ esp_decrypt_inline (vlib_main_t * vm,
 		  switch (clib_net_to_host_u16 (gre->protocol))
 		    {
 		    case GRE_PROTOCOL_teb:
+		      vnet_update_l2_len (b[0]);
 		      next[0] = ESP_DECRYPT_NEXT_L2_INPUT;
 		      break;
 		    case GRE_PROTOCOL_ip4:
-- 
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