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linux/net/packet
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Willem de Bruijn da7c956101 packet: only test po->has_vnet_hdr once in packet_snd 
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: bfd5f4a3d6 ("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>
History 2017-09-28 10:24:31 -07:00
..
af_packet.c packet: only test po->has_vnet_hdr once in packet_snd 2017-09-28 10:24:31 -07:00
diag.c packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3 2017-01-10 21:02:42 -05:00
internal.h net: convert packet_fanout.sk_ref from atomic_t to refcount_t 2017-07-01 07:39:09 -07:00
Kconfig packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
Makefile packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00