xfrm6: Fix IPv6 payload_len in xfrm6_transport_finish
authorYossi Kuperman <yossiku@mellanox.com>
Thu, 22 Jun 2017 08:37:10 +0000 (11:37 +0300)
committerSteffen Klassert <steffen.klassert@secunet.com>
Thu, 22 Jun 2017 08:49:14 +0000 (10:49 +0200)
commit7c88e21aefcf86fb41b48b2e04528db5a30fbe18
tree7f7023cf174ea4739b7195e641bdaead99e66f8a
parente747f64336fc15e1c823344942923195b800aa1e
xfrm6: Fix IPv6 payload_len in xfrm6_transport_finish

IPv6 payload length indicates the size of the payload, including any
extension headers.

In xfrm6_transport_finish, ipv6_hdr(skb)->payload_len is set to the
payload size only, regardless of the presence of any extension headers.
After ESP GRO transport mode decapsulation, ipv6_rcv trims the packet
according to the wrong payload_len, thus corrupting the packet.

Set payload_len to account for extension headers as well.

Fixes: 7785bba299a8 ("esp: Add a software GRO codepath")
Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
net/ipv6/xfrm6_input.c