diff options
| author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2008-07-31 20:46:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-08-20 11:05:05 -0700 |
| commit | bf408b4303a36e6f70514249b71fbec3a84678b8 (patch) | |
| tree | 10cfa11162e39d008e99866c7279cc7e201e653a /net | |
| parent | c6ff0921d313ec31aed068b456f132a005dce59f (diff) | |
ipv6: Fix ip6_xmit to send fragments if ipfragok is true
[ Upstream commit 77e2f14f71d68d05945f1d30ca55b5194d6ab1ce ]
SCTP used ip6_xmit() to send fragments after received ICMP packet too
big message. But while send packet used ip6_xmit, the skb->local_df is
not initialized. So when skb if enter ip6_fragment(), the following
code will discard the skb.
ip6_fragment(...)
{
if (!skb->local_df) {
...
return -EMSGSIZE;
}
...
}
SCTP do the following step:
1. send packet ip6_xmit(skb, ipfragok=0)
2. received ICMP packet too big message
3. if PMTUD_ENABLE: ip6_xmit(skb, ipfragok=1)
This patch fixed the problem by set local_df if ipfragok is true.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/ip6_output.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 48cdce9c696c..401977026616 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -231,6 +231,10 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl, skb_reset_network_header(skb); hdr = ipv6_hdr(skb); + /* Allow local fragmentation. */ + if (ipfragok) + skb->local_df = 1; + /* * Fill in the IPv6 header */ |