3.2.62-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
This reverts commit 59d9f389df3cdf72833d5ee17c3fe959b6bdc792, which
was commit ca6c5d4ad216d5942ae544bbf02503041bd802aa upstream. It is a
valid fix, but depends on sk_buff::local_df being set in all the right
cases, which it wasn't in 3.2. We need to defer it unless and until
the other fixes are also backported to 3.2.y.
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
net/ipv4/ip_forward.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -42,12 +42,12 @@
static bool ip_may_fragment(const struct sk_buff *skb)
{
return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) ||
- skb->local_df;
+ !skb->local_df;
}
static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu)
{
- if (skb->len <= mtu)
+ if (skb->len <= mtu || skb->local_df)
return false;
if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu)
--
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