IPsec: add API for SPDs dump (VPP-1363)

[vpp.git] / src / vnet / ipsec / esp_decrypt.c

diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c
index 62b12db..a0eeed4 100644 (file)
--- a/src/vnet/ipsec/esp_decrypt.c
+++ b/src/vnet/ipsec/esp_decrypt.c
@@ -269,9 +269,13 @@ esp_decrypt_node_fn (vlib_main_t * vm,
                {
                  tunnel_mode = 0;
 
-                 ih4 =
-                   (ip4_header_t *) ((u8 *) i_b0->data +
-                                     vnet_buffer (i_b0)->l3_hdr_offset);
+                 if (i_b0->flags & VNET_BUFFER_F_IS_IP4)
+                   ih4 =
+                     (ip4_header_t *) ((u8 *) esp0 - sizeof (ip4_header_t));
+                 else
+                   ih4 =
+                     (ip4_header_t *) ((u8 *) esp0 - sizeof (ip6_header_t));
+
                  if (PREDICT_TRUE
                      ((ih4->ip_version_and_header_length & 0xF0) != 0x40))
                    {