xfrm: Fix eth_hdr(skb)->h_proto to reflect inner IP version

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IPSec tunnel mode supports encapsulation of IPv4 over IPv6 and vice-versa.

The outer IP header is stripped and the inner IP inherits the original
Ethernet header. Tcpdump fails to properly decode the inner packet in
case that h_proto is different than the inner IP version.

Fix h_proto to reflect the inner IP version.

Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

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Yossi Kuperman 2018-01-23 00:16:21 +02:00 • committed by Steffen Klassert

parent aa5dd6fa6f

commit 5efec5c655

2 changed files with 2 additions and 0 deletions

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net/ipv4/xfrm4_mode_tunnel.c

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1

net/ipv6/xfrm6_mode_tunnel.c

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