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| author | Alexander Ovechkin <ovov@yandex-team.ru> | 2020-10-29 20:10:12 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-10-30 08:07:30 -0700 |
| commit | 9e7c5b396e98eed859d3dd1ab235912a296faab5 (patch) | |
| tree | e845c782674b4778e1d5dd9b1027fce1d999f69d /net/unix/af_unix.c | |
| parent | 07e0887302450a62f51dba72df6afb5fabb23d1c (diff) | |
| download | lwn-9e7c5b396e98eed859d3dd1ab235912a296faab5.tar.gz lwn-9e7c5b396e98eed859d3dd1ab235912a296faab5.zip | |
ip6_tunnel: set inner ipproto before ip6_tnl_encap
ip6_tnl_encap assigns to proto transport protocol which
encapsulates inner packet, but we must pass to set_inner_ipproto
protocol of that inner packet.
Calling set_inner_ipproto after ip6_tnl_encap might break gso.
For example, in case of encapsulating ipv6 packet in fou6 packet, inner_ipproto
would be set to IPPROTO_UDP instead of IPPROTO_IPV6. This would lead to
incorrect calling sequence of gso functions:
ipv6_gso_segment -> udp6_ufo_fragment -> skb_udp_tunnel_segment -> udp6_ufo_fragment
instead of:
ipv6_gso_segment -> udp6_ufo_fragment -> skb_udp_tunnel_segment -> ip6ip6_gso_segment
Fixes: 6c11fbf97e69 ("ip6_tunnel: add MPLS transmit support")
Signed-off-by: Alexander Ovechkin <ovov@yandex-team.ru>
Link: https://lore.kernel.org/r/20201029171012.20904-1-ovov@yandex-team.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions