This is a note to let you know that I've just added the patch titled
packet: always probe for transport header
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
packet-always-probe-for-transport-header.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Dec 11 11:38:35 EST 2015
From: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Date: Wed, 11 Nov 2015 23:25:41 +0100
Subject: packet: always probe for transport header
From: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
[ 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 <daniel@xxxxxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -2328,8 +2328,7 @@ 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;
}
@@ -2681,8 +2680,8 @@ 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;
Patches currently in stable-queue which might be from daniel@xxxxxxxxxxxxx are
queue-4.2/packet-infer-protocol-from-ethernet-header-if-unset.patch
queue-4.2/bpf-array-fix-heap-out-of-bounds-access-when-updating-elements.patch
queue-4.2/ipv6-sctp-implement-sctp_v6_destroy_sock.patch
queue-4.2/packet-only-allow-extra-vlan-len-on-ethernet-devices.patch
queue-4.2/net-scm-fix-pax-detected-msg_controllen-overflow-in-scm_detach_fds.patch
queue-4.2/packet-fix-tpacket_snd-max-frame-len.patch
queue-4.2/packet-always-probe-for-transport-header.patch
queue-4.2/packet-do-skb_probe_transport_header-when-we-actually-have-data.patch
queue-4.2/tools-net-use-include-uapi-with-__exported_headers__.patch
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