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ip6_output: fragment outgoing reassembled skb properly 

[ Upstream commit 9037c3579a277f3a23ba476664629fda8c35f7c4 ]

If reassembled packet would fit into outdev MTU, it is not fragmented
according the original frag size and it is send as single big packet.

The second case is if skb is gso. In that case fragmentation does not happen
according to the original frag size.

This patch fixes these.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Pirko 2013-11-06 17:52:19 +01:00 committed by Greg Kroah-Hartman
parent 2d71627c5a
commit 2d9a30962d
1 changed files with 2 additions and 1 deletions
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3
net/ipv6/ip6_output.c
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@ -150,7 +150,8 @@ static int ip6_finish_output2(struct sk_buff *skb)
static int ip6_finish_output(struct sk_buff *skb)
{
if ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) ||
dst_allfrag(skb_dst(skb)))
dst_allfrag(skb_dst(skb)) ||
(IP6CB(skb)->frag_max_size && skb->len > IP6CB(skb)->frag_max_size))
return ip6_fragment(skb, ip6_finish_output2);
else
return ip6_finish_output2(skb);