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ip: init l3_hdr_offset when pushing an ip4 header

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Type: fix

Change-Id: I87503b9a981724b1f3ff1c45a4a5f7a43024ca76
Signed-off-by: Florin Coras <fcoras@cisco.com>
(cherry picked from commit 757de9873bbaf2d21d107da42c6bbeb2804c7fcc)
This commit is contained in:
Florin Coras 2019-11-26 18:43:25 -08:00 committed by Andrew Yourtchenko
parent c7e400f8af
commit 2b9bf4f4a7
1 changed files with 4 additions and 6 deletions
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10
src/vnet/ip/ip4.h
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@ -401,16 +401,14 @@ vlib_buffer_push_ip4 (vlib_main_t * vm, vlib_buffer_t * b,
ih->src_address.as_u32 = src->as_u32;
ih->dst_address.as_u32 = dst->as_u32;
vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data;
b->flags |= VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
/* Offload ip4 header checksum generation */
if (csum_offload)
{
ih->checksum = 0;
b->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM | VNET_BUFFER_F_IS_IP4;
vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data;
vnet_buffer (b)->l4_hdr_offset = vnet_buffer (b)->l3_hdr_offset +
sizeof (*ih);
b->flags |=
VNET_BUFFER_F_L3_HDR_OFFSET_VALID | VNET_BUFFER_F_L4_HDR_OFFSET_VALID;
b->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
}
else
ih->checksum = ip4_header_checksum (ih);