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| author | Patrick McHardy <kaber@trash.net> | 2008-10-14 22:56:59 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-14 22:56:59 +0400 |
| commit | 38f7ac3eb7206ffd1201c14baba832d7e363de0a (patch) | |
| tree | cd195d19a0c16f3cd59f4afe0526a86c1db5322d /net | |
| parent | 485013717020cd8961337309e359d6cef43d6022 (diff) | |
| download | linux-38f7ac3eb7206ffd1201c14baba832d7e363de0a.tar.xz | |
netfilter: restore lost #ifdef guarding defrag exception
Nir Tzachar <nir.tzachar@gmail.com> reported a warning when sending
fragments over loopback with NAT:
[ 6658.338121] WARNING: at net/ipv4/netfilter/nf_nat_standalone.c:89 nf_nat_fn+0x33/0x155()
The reason is that defragmentation is skipped for already tracked connections.
This is wrong in combination with NAT and ip_conntrack actually had some ifdefs
to avoid this behaviour when NAT is compiled in.
The entire "optimization" may seem a bit silly, for now simply restoring the
lost #ifdef is the easiest solution until we can come up with something better.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/netfilter/nf_defrag_ipv4.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c index aa2c50a180f7..fa2d6b6fc3e5 100644 --- a/net/ipv4/netfilter/nf_defrag_ipv4.c +++ b/net/ipv4/netfilter/nf_defrag_ipv4.c @@ -41,12 +41,13 @@ static unsigned int ipv4_conntrack_defrag(unsigned int hooknum, int (*okfn)(struct sk_buff *)) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) +#if !defined(CONFIG_NF_NAT) && !defined(CONFIG_NF_NAT_MODULE) /* Previously seen (loopback)? Ignore. Do this before fragment check. */ if (skb->nfct) return NF_ACCEPT; #endif - +#endif /* Gather fragments. */ if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) { if (nf_ct_ipv4_gather_frags(skb, |