static int __init nf_nat_standalone_init(void)
{
int ret = 0;
need_ipv4_conntrack();
#ifdef CONFIG_XFRM
BUG_ON(ip_nat_decode_session != NULL);
rcu_assign_pointer_nonull(ip_nat_decode_session, nat_decode_session);
#endif
ret = nf_nat_rule_init();
if (ret < 0) {
pr_err("nf_nat_init: can't setup rules.\n");
goto cleanup_decode_session;
}
ret = nf_register_hooks(nf_nat_ops, ARRAY_SIZE(nf_nat_ops));
if (ret < 0) {
pr_err("nf_nat_init: can't register hooks.\n");
goto cleanup_rule_init;
}
return ret;
cleanup_rule_init:
nf_nat_rule_cleanup();
cleanup_decode_session:
#ifdef CONFIG_XFRM
rcu_assign_pointer(ip_nat_decode_session, NULL);
synchronize_net();
#endif
return ret;
}
static void __exit nf_nat_standalone_fini(void)
{
nf_unregister_hooks(nf_nat_ops, ARRAY_SIZE(nf_nat_ops));
nf_nat_rule_cleanup();
#ifdef CONFIG_XFRM
rcu_assign_pointer(ip_nat_decode_session, NULL);
synchronize_net();
#endif
/* Conntrack caches are unregistered in nf_conntrack_cleanup */
}
static void __exit nf_nat_standalone_fini(void)
{
nf_unregister_hooks(nf_nat_ops, ARRAY_SIZE(nf_nat_ops));
nf_nat_rule_cleanup();
nf_nat_module_is_loaded = 0;
#ifdef CONFIG_XFRM
ip_nat_decode_session = NULL;
synchronize_net();
#endif
/* Conntrack caches are unregistered in nf_conntrack_cleanup */
}
static int __init nf_nat_standalone_init(void)
{
int size, ret = 0;
need_conntrack();
size = ALIGN(sizeof(struct nf_conn), __alignof__(struct nf_conn_nat)) +
sizeof(struct nf_conn_nat);
ret = nf_conntrack_register_cache(NF_CT_F_NAT, "nf_nat:base", size);
if (ret < 0) {
printk(KERN_ERR "nf_nat_init: Unable to create slab cache\n");
return ret;
}
size = ALIGN(size, __alignof__(struct nf_conn_help)) +
sizeof(struct nf_conn_help);
ret = nf_conntrack_register_cache(NF_CT_F_NAT|NF_CT_F_HELP,
"nf_nat:help", size);
if (ret < 0) {
printk(KERN_ERR "nf_nat_init: Unable to create slab cache\n");
goto cleanup_register_cache;
}
#ifdef CONFIG_XFRM
BUG_ON(ip_nat_decode_session != NULL);
ip_nat_decode_session = nat_decode_session;
#endif
ret = nf_nat_rule_init();
if (ret < 0) {
printk("nf_nat_init: can't setup rules.\n");
goto cleanup_decode_session;
}
ret = nf_register_hooks(nf_nat_ops, ARRAY_SIZE(nf_nat_ops));
if (ret < 0) {
printk("nf_nat_init: can't register hooks.\n");
goto cleanup_rule_init;
}
nf_nat_module_is_loaded = 1;
return ret;
cleanup_rule_init:
nf_nat_rule_cleanup();
cleanup_decode_session:
#ifdef CONFIG_XFRM
ip_nat_decode_session = NULL;
synchronize_net();
#endif
nf_conntrack_unregister_cache(NF_CT_F_NAT|NF_CT_F_HELP);
cleanup_register_cache:
nf_conntrack_unregister_cache(NF_CT_F_NAT);
return ret;
}