From 9f6957d1a5b23d4bee9390da20537db6e93b3433 Mon Sep 17 00:00:00 2001 From: jackiechen1985 Date: Thu, 6 Dec 2018 03:10:31 +0800 Subject: [PATCH] Fix VPP-1515 IPSec receive packet error in transport mode with udp encap Change-Id: Ife66395b89e1e9f9206666e5f0fd441b3c241bb2 Signed-off-by: jackiechen1985 --- src/vnet/ipsec/esp_decrypt.c | 16 +++++++++++++--- src/vnet/ipsec/esp_encrypt.c | 2 +- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c index 68cb825f23b..3f463505e01 100644 --- a/src/vnet/ipsec/esp_decrypt.c +++ b/src/vnet/ipsec/esp_decrypt.c @@ -277,9 +277,19 @@ esp_decrypt_inline (vlib_main_t * vm, } else { - ih4 = - (ip4_header_t *) ((u8 *) esp0 - - sizeof (ip4_header_t)); + if (sa0->udp_encap) + { + ih4 = + (ip4_header_t *) ((u8 *) esp0 - + sizeof (udp_header_t) - + sizeof (ip4_header_t)); + } + else + { + ih4 = + (ip4_header_t *) ((u8 *) esp0 - + sizeof (ip4_header_t)); + } oh4 = vlib_buffer_get_current (o_b0); ip_hdr_size = sizeof (ip4_header_t); } diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c index 4f2d7707395..88eda91bf7f 100644 --- a/src/vnet/ipsec/esp_encrypt.c +++ b/src/vnet/ipsec/esp_encrypt.c @@ -311,7 +311,7 @@ esp_encrypt_inline (vlib_main_t * vm, vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = vnet_buffer (i_b0)->sw_if_index[VLIB_TX]; } - vlib_buffer_advance (i_b0, ip_udp_hdr_size); + vlib_buffer_advance (i_b0, sizeof (ip4_header_t)); } ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG); -- 2.16.6