diff options
| author |   Szymon Sliwa <szs@semihalf.com> | 2018-05-09 14:28:08 +0200 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2018-05-10 14:11:13 +0000 |
| commit | 65a27279af2bead3be65ab0cb2a0bc2b79e00f42 (patch) | |
| tree | 08b0ea77e6d11500faffa539b0797473d2eabb36 /src/plugins | |
| parent | 7cb7bb3fa1eca927cd33d8b434ce0eac1d57a987 (diff) | |
Change the way IP header pointer is calculated in esp_decrypt nodes
The pointer to IP header was derived from l3_hdr_offset,
which would be ok, if l3_hdr_offset was valid. But it does not
have to be, so it was a bad solution. Now the previous nodes
mark whether it is a IPv6 or IPv4 packet tyle, and in esp_decrypt
we count get ip header pointer by substracting the size
of the ip header from the pointer to esp header (which lies
in front of the ip header).
Change-Id: I6d425b90931053711e8ce9126811b77ae6002a16
Signed-off-by: Szymon Sliwa <szs@semihalf.com>
Diffstat (limited to 'src/plugins')
| -rw-r--r-- | src/plugins/dpdk/ipsec/esp_decrypt.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/plugins/dpdk/ipsec/esp_decrypt.c b/src/plugins/dpdk/ipsec/esp_decrypt.c index 85bfb64f1f5..06909b3d347 100644 --- a/src/plugins/dpdk/ipsec/esp_decrypt.c +++ b/src/plugins/dpdk/ipsec/esp_decrypt.c @@ -476,7 +476,13 @@ dpdk_esp_decrypt_post_node_fn (vlib_main_t * vm, esp_replay_advance(sa0, seq); } - ih4 = (ip4_header_t *) (b0->data + vnet_buffer(b0)->l3_hdr_offset); + if (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)); + vlib_buffer_advance (b0, sizeof (esp_header_t) + iv_size); b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; |