netfilter 10/12: nf_conntrack: add generic function to get len of generic policy

Message ID 20090326190238.23365.70803.sendpatchset@x2.localnet
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Patrick McHardy March 26, 2009, 7:02 p.m.
commit 5c0de29d06318ec8f6e3ba0d17d62529dbbdc1e8
Author: Holger Eitzenberger <>
Date:   Wed Mar 25 21:52:17 2009 +0100

    netfilter: nf_conntrack: add generic function to get len of generic policy
    Usefull for all protocols which do not add additional data, such
    as GRE or UDPlite.
    Signed-off-by: Holger Eitzenberger <>
    Signed-off-by: Patrick McHardy <>

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diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index a120990..ba32ed7 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -113,6 +113,7 @@  extern int nf_ct_port_tuple_to_nlattr(struct sk_buff *skb,
 				      const struct nf_conntrack_tuple *tuple);
 extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
 				      struct nf_conntrack_tuple *t);
+extern int nf_ct_port_nlattr_tuple_size(void);
 extern const struct nla_policy nf_ct_port_nla_policy[];
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index c55bbdc..b182b30 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -921,6 +921,12 @@  int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
 	return 0;
+int nf_ct_port_nlattr_tuple_size(void)
+	return nla_policy_len(nf_ct_port_nla_policy, CTA_PROTO_MAX + 1);
 /* Used by ipt_REJECT and ip6t_REJECT. */