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netfilter: cttimeout: fix dependency with l4protocol conntrack module

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This patch introduces nf_conntrack_l4proto_find_get() and
nf_conntrack_l4proto_put() to fix module dependencies between
timeout objects and l4-protocol conntrack modules.

Thus, we make sure that the module cannot be removed if it is
used by any of the cttimeout objects.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2012-03-22 23:40:01 +01:00
parent a0f65a267d
commit c1ebd7dff7
5 changed files with 53 additions and 25 deletions
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include/net/netfilter/nf_conntrack_l4proto.h
+4
View File
@@ -118,6 +118,10 @@ extern struct nf_conntrack_l4proto nf_conntrack_l4proto_generic;
extern struct nf_conntrack_l4proto *
__nf_ct_l4proto_find(u_int16_t l3proto, u_int8_t l4proto);
extern struct nf_conntrack_l4proto *
nf_ct_l4proto_find_get(u_int16_t l3proto, u_int8_t l4proto);
extern void nf_ct_l4proto_put(struct nf_conntrack_l4proto *p);
/* Protocol registration. */
extern int nf_conntrack_l4proto_register(struct nf_conntrack_l4proto *proto);
extern void nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *proto);
include/net/netfilter/nf_conntrack_timeout.h
+1 -1
View File
@@ -15,7 +15,7 @@ struct ctnl_timeout {
atomic_t refcnt;
char name[CTNL_TIMEOUT_NAME_MAX];
__u16 l3num;
__u8 l4num;
struct nf_conntrack_l4proto *l4proto;
char data[0];
};