This is a note to let you know that I've just added the patch titled
ipv4: Set skb->protocol properly for local output
to the 4.4-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:
ipv4-set-skb-protocol-properly-for-local-output.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f4180439109aa720774baafdd798b3234ab1a0d2 Mon Sep 17 00:00:00 2001
From: Eli Cooper <elicooper@xxxxxxx>
Date: Thu, 1 Dec 2016 10:05:10 +0800
Subject: ipv4: Set skb->protocol properly for local output
From: Eli Cooper <elicooper@xxxxxxx>
commit f4180439109aa720774baafdd798b3234ab1a0d2 upstream.
When xfrm is applied to TSO/GSO packets, it follows this path:
xfrm_output() -> xfrm_output_gso() -> skb_gso_segment()
where skb_gso_segment() relies on skb->protocol to function properly.
This patch sets skb->protocol to ETH_P_IP before dst_output() is called,
fixing a bug where GSO packets sent through a sit tunnel are dropped
when xfrm is involved.
Signed-off-by: Eli Cooper <elicooper@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv4/ip_output.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -102,6 +102,9 @@ int __ip_local_out(struct net *net, stru
iph->tot_len = htons(skb->len);
ip_send_check(iph);
+
+ skb->protocol = htons(ETH_P_IP);
+
return nf_hook(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
net, sk, skb, NULL, skb_dst(skb)->dev,
dst_output);
Patches currently in stable-queue which might be from elicooper@xxxxxxx are
queue-4.4/ipv6-set-skb-protocol-properly-for-local-output.patch
queue-4.4/ipv4-set-skb-protocol-properly-for-local-output.patch
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