tree 7f8486a0d231dbba93d0bdba198bdde5ac8ddf09
parent d41fb2fbb28d3a1085960edada6c046becd1fafd
author Eli Cooper <elicooper@gmx.com> 1480557911 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1481393246 +0100

ipv6: Set skb->protocol properly for local output

commit b4e479a96fc398ccf83bb1cffb4ffef8631beaf1 upstream.

When xfrm is applied to TSO/GSO packets, it follows this path:

    xfrm_output() -> xfrm_output_gso() -> skb_gso_segment()

where skb_gso_segment() relies on skb->protocol to function properly.

This patch sets skb->protocol to ETH_P_IPV6 before dst_output() is called,
fixing a bug where GSO packets sent through an ipip6 tunnel are dropped
when xfrm is involved.

Signed-off-by: Eli Cooper <elicooper@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>