atomic_t nf_conntrack_count = ATOMIC_INIT(0);
void (*nf_conntrack_destroyed)(struct nf_conn *conntrack) = NULL;
-struct nf_conntrack_protocol **nf_ct_protos[PF_MAX] __read_mostly;
-struct nf_conntrack_l3proto *nf_ct_l3protos[PF_MAX] __read_mostly;
unsigned int nf_conntrack_htable_size __read_mostly = 0;
int nf_conntrack_max __read_mostly;
struct list_head *nf_conntrack_hash __read_mostly;
/* This avoids calling kmem_cache_create() with same name simultaneously */
static DEFINE_MUTEX(nf_ct_cache_mutex);
-extern struct nf_conntrack_protocol nf_conntrack_generic_protocol;
-struct nf_conntrack_protocol *
-__nf_ct_proto_find(u_int16_t l3proto, u_int8_t protocol)
-{
- if (unlikely(l3proto >= AF_MAX || nf_ct_protos[l3proto] == NULL))
- return &nf_conntrack_generic_protocol;
-
- return nf_ct_protos[l3proto][protocol];
-}
-
-/* this is guaranteed to always return a valid protocol helper, since
- * it falls back to generic_protocol */
-struct nf_conntrack_protocol *
-nf_ct_proto_find_get(u_int16_t l3proto, u_int8_t protocol)
-{
- struct nf_conntrack_protocol *p;
-
- preempt_disable();
- p = __nf_ct_proto_find(l3proto, protocol);
- if (!try_module_get(p->me))
- p = &nf_conntrack_generic_protocol;
- preempt_enable();
-
- return p;
-}
-
-void nf_ct_proto_put(struct nf_conntrack_protocol *p)
-{
- module_put(p->me);
-}
-
-struct nf_conntrack_l3proto *
-nf_ct_l3proto_find_get(u_int16_t l3proto)
-{
- struct nf_conntrack_l3proto *p;
-
- preempt_disable();
- p = __nf_ct_l3proto_find(l3proto);
- if (!try_module_get(p->me))
- p = &nf_conntrack_generic_l3proto;
- preempt_enable();
-
- return p;
-}
-
-void nf_ct_l3proto_put(struct nf_conntrack_l3proto *p)
-{
- module_put(p->me);
-}
-
-int
-nf_ct_l3proto_try_module_get(unsigned short l3proto)
-{
- int ret;
- struct nf_conntrack_l3proto *p;
-
-retry: p = nf_ct_l3proto_find_get(l3proto);
- if (p == &nf_conntrack_generic_l3proto) {
- ret = request_module("nf_conntrack-%d", l3proto);
- if (!ret)
- goto retry;
-
- return -EPROTOTYPE;
- }
-
- return 0;
-}
-
-void nf_ct_l3proto_module_put(unsigned short l3proto)
-{
- struct nf_conntrack_l3proto *p;
-
- preempt_disable();
- p = __nf_ct_l3proto_find(l3proto);
- preempt_enable();
-
- module_put(p->me);
-}
-
static int nf_conntrack_hash_rnd_initted;
static unsigned int nf_conntrack_hash_rnd;