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| author | Willem de Bruijn <willemb@google.com> | 2017-09-26 16:20:17 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-12 09:51:22 (GMT) |
| commit | 24ee394a82d2cd92c92b617713a4d263131a902b (patch) | |
| tree | c85d01dad43a809227211e7a8b5de424d0f5338a /net/core | |
| parent | 0f22167d3321a028c0b6edc2d5b2ab0e37a2ac53 (diff) | |
| download | linux-24ee394a82d2cd92c92b617713a4d263131a902b.tar.xz | |
packet: only test po->has_vnet_hdr once in packet_snd
[ Upstream commit da7c9561015e93d10fe6aab73e9288e0d09d65a6 ]
Packet socket option po->has_vnet_hdr can be updated concurrently with
other operations if no ring is attached.
Do not test the option twice in packet_snd, as the value may change in
between calls. A race on setsockopt disable may cause a packet > mtu
to be sent without having GSO options set.
Fixes: bfd5f4a3d605 ("packet: Add GSO/csum offload support.")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions