4.3-stable review patch. If anyone has any objections, please let me know.
------------------ From: Daniel Borkmann <dan...@iogearbox.net> [ Upstream commit 8fd6c80d9dd938ca338c70698533a7e304752846 ] We concluded that the skb_probe_transport_header() should better be called unconditionally. Avoiding the call into the flow dissector has also not really much to do with the direct xmit mode. While it seems that only virtio_net code makes use of GSO from non RX/TX ring packet socket paths, we should probe for a transport header nevertheless before they hit devices. Reference: http://thread.gmane.org/gmane.linux.network/386173/ Signed-off-by: Daniel Borkmann <dan...@iogearbox.net> Acked-by: Jason Wang <jasow...@redhat.com> Signed-off-by: David S. Miller <da...@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- net/packet/af_packet.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2447,8 +2447,7 @@ static int tpacket_fill_skb(struct packe len = ((to_write > len_max) ? len_max : to_write); } - if (!packet_use_direct_xmit(po)) - skb_probe_transport_header(skb, 0); + skb_probe_transport_header(skb, 0); return tp_len; } @@ -2800,8 +2799,8 @@ static int packet_snd(struct socket *soc len += vnet_hdr_len; } - if (!packet_use_direct_xmit(po)) - skb_probe_transport_header(skb, reserve); + skb_probe_transport_header(skb, reserve); + if (unlikely(extra_len == 4)) skb->no_fcs = 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
