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map: handle IPv6 extension headers for TCP/UDP

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Without this patch offset for TCP/UDP headers was not calculated
correctly if there is one or more IPv6 extension headers.

Type: fix
Signed-off-by: Vladimir Isaev <visaev@netgate.com>
Change-Id: I04d6f5e42f8f072987192d6236085afbd74a4420
(cherry picked from commit 7d4cd0cf6f1a94953ef97ab885752424dea6948c)
This commit is contained in:
Vladimir Isaev
2020-02-26 13:21:35 +03:00
committed by Andrew Yourtchenko
parent df76172d8a
commit b745d7b21d
1 changed files with 2 additions and 2 deletions
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4
src/plugins/map/ip6_map_t.c
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@ -381,7 +381,7 @@ map_ip6_to_ip4_tcp_udp (vlib_buffer_t * p, bool udp_checksum)
if (l4_protocol == IP_PROTOCOL_TCP)
{
tcp_header_t *tcp = ip6_next_header (ip6);
tcp_header_t *tcp = (tcp_header_t *) u8_ptr_add (ip6, l4_offset);
if (mm->tcp_mss > 0)
{
csum = tcp->checksum;
@ -392,7 +392,7 @@ map_ip6_to_ip4_tcp_udp (vlib_buffer_t * p, bool udp_checksum)
}
else
{
udp_header_t *udp = ip6_next_header (ip6);
udp_header_t *udp = (udp_header_t *) u8_ptr_add (ip6, l4_offset);
checksum = &udp->checksum;
}