netfilter 47/62: xtables: fix mangle tables

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commit b2907e501945d5d13326a6a7441c13e41cd0e799
Author: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Date:   Thu Feb 11 18:41:35 2010 +0100

    netfilter: xtables: fix mangle tables
    
    In POST_ROUTING hook, calling dev_net(in) is going to oops.
    
    Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
    Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>

diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c
index 58d7097..c833330 100644
--- a/net/ipv4/netfilter/iptable_mangle.c
+++ b/net/ipv4/netfilter/iptable_mangle.c
@@ -87,7 +87,9 @@ iptable_mangle_hook(unsigned int hook,
 {
 	if (hook == NF_INET_LOCAL_OUT)
 		return ipt_local_hook(hook, skb, in, out, okfn);
-
+	if (hook == NF_INET_POST_ROUTING)
+		return ipt_do_table(skb, hook, in, out,
+				    dev_net(out)->ipv4.iptable_mangle);
 	/* PREROUTING/INPUT/FORWARD: */
 	return ipt_do_table(skb, hook, in, out,
 			    dev_net(in)->ipv4.iptable_mangle);
diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c
index dc803b7..b6216de 100644
--- a/net/ipv6/netfilter/ip6table_mangle.c
+++ b/net/ipv6/netfilter/ip6table_mangle.c
@@ -81,7 +81,9 @@ ip6table_mangle_hook(unsigned int hook, struct sk_buff *skb,
 {
 	if (hook == NF_INET_LOCAL_OUT)
 		return ip6t_local_out_hook(hook, skb, out, okfn);
-
+	if (hook == NF_INET_POST_ROUTING)
+		return ip6t_do_table(skb, hook, in, out,
+				     dev_net(out)->ipv6.ip6table_mangle);
 	/* INPUT/FORWARD */
 	return ip6t_do_table(skb, hook, in, out,
 			     dev_net(in)->ipv6.ip6table_mangle);
--
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