int nf_conntrack_proto_init(void)
{
int ret = 0;
ret = nf_register_sockopt(&so_getorigdst);
if (ret < 0)
return ret;
#if IS_ENABLED(CONFIG_IPV6)
ret = nf_register_sockopt(&so_getorigdst6);
if (ret < 0)
goto cleanup_sockopt;
#endif
ret = nf_ct_l4proto_register(builtin_l4proto,
ARRAY_SIZE(builtin_l4proto));
if (ret < 0)
goto cleanup_sockopt2;
return ret;
cleanup_sockopt2:
nf_unregister_sockopt(&so_getorigdst);
#if IS_ENABLED(CONFIG_IPV6)
cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst6);
#endif
return ret;
}
static int __init nf_conntrack_proto_dccp_init(void)
{
int ret;
ret = register_pernet_subsys(&dccp_net_ops);
if (ret < 0)
goto out_pernet;
ret = nf_ct_l4proto_register(&dccp_proto4);
if (ret < 0)
goto out_dccp4;
ret = nf_ct_l4proto_register(&dccp_proto6);
if (ret < 0)
goto out_dccp6;
return 0;
out_dccp6:
nf_ct_l4proto_unregister(&dccp_proto4);
out_dccp4:
unregister_pernet_subsys(&dccp_net_ops);
out_pernet:
return ret;
}
static int __init nf_conntrack_l3proto_ipv4_init(void)
{
int ret = 0;
need_conntrack();
nf_defrag_ipv4_enable();
ret = nf_register_sockopt(&so_getorigdst);
if (ret < 0) {
printk(KERN_ERR "Unable to register netfilter socket option\n");
return ret;
}
ret = register_pernet_subsys(&ipv4_net_ops);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register pernet ops\n");
goto cleanup_sockopt;
}
ret = nf_register_hooks(ipv4_conntrack_ops,
ARRAY_SIZE(ipv4_conntrack_ops));
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register hooks.\n");
goto cleanup_pernet;
}
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_tcp4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register tcp4 proto.\n");
goto cleanup_hooks;
}
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_udp4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register udp4 proto.\n");
goto cleanup_tcp4;
}
ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_icmp);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register icmpv4 proto.\n");
goto cleanup_udp4;
}
ret = nf_ct_l3proto_register(&nf_conntrack_l3proto_ipv4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register ipv4 proto.\n");
goto cleanup_icmpv4;
}
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
ret = nf_conntrack_ipv4_compat_init();
if (ret < 0)
goto cleanup_proto;
#endif
return ret;
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
cleanup_proto:
nf_ct_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
#endif
cleanup_icmpv4:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_icmp);
cleanup_udp4:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udp4);
cleanup_tcp4:
nf_ct_l4proto_unregister(&nf_conntrack_l4proto_tcp4);
cleanup_hooks:
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
cleanup_pernet:
unregister_pernet_subsys(&ipv4_net_ops);
cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst);
return ret;
}
