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netfilter: introduce nf_conntrack_helper_put helper function

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And convert module_put invocation to nf_conntrack_helper_put, this is
prepared for the followup patch, which will add a refcnt for cthelper,
so we can reject the deleting request when cthelper is in use.

Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Liping Zhang
2017-05-07 22:01:55 +08:00
committed by Pablo Neira Ayuso
parent d110a3942a
commit d91fc59cd7
5 changed files with 15 additions and 7 deletions
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2
include/net/netfilter/nf_conntrack_helper.h
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@@ -79,6 +79,8 @@ struct nf_conntrack_helper *__nf_conntrack_helper_find(const char *name,
struct nf_conntrack_helper *nf_conntrack_helper_try_module_get(const char *name,
u16 l3num,
u8 protonum);
void nf_conntrack_helper_put(struct nf_conntrack_helper *helper);
void nf_ct_helper_init(struct nf_conntrack_helper *helper,
u16 l3num, u16 protonum, const char *name,
u16 default_port, u16 spec_port, u32 id,