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netfilter: nf_conntrack_extend: introduce __nf_ct_ext_exist()

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some users of nf_ct_ext_exist() know ct->ext isn't NULL. For these users, the
check for ct->ext isn't necessary, the function __nf_ct_ext_exist() can be
used instead.

the type of the return value of nf_ct_ext_exist() is changed to bool.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Changli Gao 2010-08-02 17:06:19 +02:00 • committed by Patrick McHardy
commit ee92d37861
2 changed files with 19 additions and 12 deletions
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9
include/net/netfilter/nf_conntrack_extend.h
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@ -28,9 +28,14 @@ struct nf_ct_ext {
char data[0];
};
static inline int nf_ct_ext_exist(const struct nf_conn *ct, u8 id)
static inline bool __nf_ct_ext_exist(const struct nf_ct_ext *ext, u8 id)
{
return (ct->ext && ct->ext->offset[id]);
return !!ext->offset[id];
}
static inline bool nf_ct_ext_exist(const struct nf_conn *ct, u8 id)
{
return (ct->ext && __nf_ct_ext_exist(ct->ext, id));
}
static inline void *__nf_ct_ext_find(const struct nf_conn *ct, u8 id)