Bugzilla: 1015905 Upstream-status: 3.13 (should hit stable) From 90e4e23d52fd04f228eed2c3d341136c50058b37 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 6 Nov 2013 17:52:19 +0100 Subject: [PATCH 1/2] ip6_output: fragment outgoing reassembled skb properly 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 Signed-off-by: David S. Miller --- net/ipv6/ip6_output.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 5b25f85..f80f2fa 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -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); -- 1.8.3.1