tcp: do not use ipv6 header for ipv4 flow
authorEric Dumazet <edumazet@google.com>
Tue, 19 Mar 2019 12:45:35 +0000 (05:45 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 19 Mar 2019 21:00:27 +0000 (14:00 -0700)
commit89e4130939a20304f4059ab72179da81f5347528
tree3b4906a03efaf52db4d22bb0c83e59d141ff0aa9
parentd7737d4257459ca8921ff911c88937be1a11ea9d
tcp: do not use ipv6 header for ipv4 flow

When a dual stack tcp listener accepts an ipv4 flow,
it should not attempt to use an ipv6 header or tcp_v6_iif() helper.

Fixes: 1397ed35f22d ("ipv6: add flowinfo for tcp6 pkt_options for all cases")
Fixes: df3687ffc665 ("ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A_GET")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/tcp_ipv6.c