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netfilter: nf_conntrack: add generic function to get len of generic policy

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Usefull for all protocols which do not add additional data, such
as GRE or UDPlite.

Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Holger Eitzenberger
2009-03-25 21:52:17 +01:00
committed by Patrick McHardy
parent 2732c4e45b
commit 5c0de29d06
2 changed files with 7 additions and 0 deletions
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1
include/net/netfilter/nf_conntrack_l4proto.h
View File

@@ -113,6 +113,7 @@ extern int nf_ct_port_tuple_to_nlattr(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple); const struct nf_conntrack_tuple *tuple);
extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[], extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
struct nf_conntrack_tuple *t); struct nf_conntrack_tuple *t);
extern int nf_ct_port_nlattr_tuple_size(void);
extern const struct nla_policy nf_ct_port_nla_policy[]; extern const struct nla_policy nf_ct_port_nla_policy[];
#ifdef CONFIG_SYSCTL #ifdef CONFIG_SYSCTL

6
net/netfilter/nf_conntrack_core.c
View File

@@ -921,6 +921,12 @@ int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(nf_ct_port_nlattr_to_tuple); EXPORT_SYMBOL_GPL(nf_ct_port_nlattr_to_tuple);
int nf_ct_port_nlattr_tuple_size(void)
{
return nla_policy_len(nf_ct_port_nla_policy, CTA_PROTO_MAX + 1);
}
EXPORT_SYMBOL_GPL(nf_ct_port_nlattr_tuple_size);
#endif #endif
/* Used by ipt_REJECT and ip6t_REJECT. */ /* Used by ipt_REJECT and ip6t_REJECT. */