static int __init nf_conntrack_l3proto_ipv6_init(void)
{
int ret = 0;
need_conntrack();
ret = nf_ct_frag6_init();
if (ret < 0) {
printk("nf_conntrack_ipv6: can't initialize frag6.\n");
return ret;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_tcp6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register tcp.\n");
goto cleanup_frag6;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_udp6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register udp.\n");
goto cleanup_tcp;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_icmpv6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register icmpv6.\n");
goto cleanup_udp;
}
ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register ipv6\n");
goto cleanup_icmpv6;
}
ret = nf_register_hooks(ipv6_conntrack_ops,
ARRAY_SIZE(ipv6_conntrack_ops));
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register pre-routing defrag "
"hook.\n");
goto cleanup_ipv6;
}
return ret;
cleanup_ipv6:
nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6);
cleanup_icmpv6:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6);
cleanup_udp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6);
cleanup_tcp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6);
cleanup_frag6:
nf_ct_frag6_cleanup();
return ret;
}
static int ipv4_net_init(struct net *net)
{
int ret = 0;
ret = nf_conntrack_l4proto_register(net,
&nf_conntrack_l4proto_tcp4);
if (ret < 0) {
pr_err("nf_conntrack_l4proto_tcp4 :protocol register failed\n");
goto out_tcp;
}
ret = nf_conntrack_l4proto_register(net,
&nf_conntrack_l4proto_udp4);
if (ret < 0) {
pr_err("nf_conntrack_l4proto_udp4 :protocol register failed\n");
goto out_udp;
}
ret = nf_conntrack_l4proto_register(net,
&nf_conntrack_l4proto_icmp);
if (ret < 0) {
pr_err("nf_conntrack_l4proto_icmp4 :protocol register failed\n");
goto out_icmp;
}
ret = nf_conntrack_l3proto_register(net,
&nf_conntrack_l3proto_ipv4);
if (ret < 0) {
pr_err("nf_conntrack_l3proto_ipv4 :protocol register failed\n");
goto out_ipv4;
}
return 0;
out_ipv4:
nf_conntrack_l4proto_unregister(net,
&nf_conntrack_l4proto_icmp);
out_icmp:
nf_conntrack_l4proto_unregister(net,
&nf_conntrack_l4proto_udp4);
out_udp:
nf_conntrack_l4proto_unregister(net,
&nf_conntrack_l4proto_tcp4);
out_tcp:
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 = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_tcp4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register tcp.\n");
goto cleanup_sockopt;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_udp4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register udp.\n");
goto cleanup_tcp;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_icmp);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register icmp.\n");
goto cleanup_udp;
}
ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv4);
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register ipv4\n");
goto cleanup_icmp;
}
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_ipv4;
}
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
ret = nf_conntrack_ipv4_compat_init();
if (ret < 0)
goto cleanup_hooks;
#endif
return ret;
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
cleanup_hooks:
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
#endif
cleanup_ipv4:
nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
cleanup_icmp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmp);
cleanup_udp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp4);
cleanup_tcp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp4);
cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst);
return ret;
}
static int init_or_cleanup(int init)
{
int ret = 0;
if (!init) goto cleanup;
ret = nf_ct_frag6_init();
if (ret < 0) {
printk("nf_conntrack_ipv6: can't initialize frag6.\n");
goto cleanup_nothing;
}
ret = nf_conntrack_protocol_register(&nf_conntrack_protocol_tcp6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register tcp.\n");
goto cleanup_frag6;
}
ret = nf_conntrack_protocol_register(&nf_conntrack_protocol_udp6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register udp.\n");
goto cleanup_tcp;
}
ret = nf_conntrack_protocol_register(&nf_conntrack_protocol_icmpv6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register icmpv6.\n");
goto cleanup_udp;
}
ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register ipv6\n");
goto cleanup_icmpv6;
}
ret = nf_register_hook(&ipv6_conntrack_defrag_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register pre-routing defrag "
"hook.\n");
goto cleanup_ipv6;
}
ret = nf_register_hook(&ipv6_conntrack_defrag_local_out_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register local_out defrag "
"hook.\n");
goto cleanup_defragops;
}
ret = nf_register_hook(&ipv6_conntrack_in_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register pre-routing hook.\n");
goto cleanup_defraglocalops;
}
ret = nf_register_hook(&ipv6_conntrack_local_out_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register local out hook.\n");
goto cleanup_inops;
}
ret = nf_register_hook(&ipv6_conntrack_out_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register post-routing hook.\n");
goto cleanup_inandlocalops;
}
ret = nf_register_hook(&ipv6_conntrack_local_in_ops);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register local in hook.\n");
goto cleanup_inoutandlocalops;
}
#ifdef CONFIG_SYSCTL
nf_ct_ipv6_sysctl_header = register_sysctl_table(nf_ct_net_table, 0);
if (nf_ct_ipv6_sysctl_header == NULL) {
printk("nf_conntrack: can't register to sysctl.\n");
ret = -ENOMEM;
goto cleanup_localinops;
}
#endif
return ret;
cleanup:
synchronize_net();
#ifdef CONFIG_SYSCTL
unregister_sysctl_table(nf_ct_ipv6_sysctl_header);
cleanup_localinops:
#endif
nf_unregister_hook(&ipv6_conntrack_local_in_ops);
cleanup_inoutandlocalops:
nf_unregister_hook(&ipv6_conntrack_out_ops);
cleanup_inandlocalops:
nf_unregister_hook(&ipv6_conntrack_local_out_ops);
cleanup_inops:
nf_unregister_hook(&ipv6_conntrack_in_ops);
cleanup_defraglocalops:
nf_unregister_hook(&ipv6_conntrack_defrag_local_out_ops);
cleanup_defragops:
nf_unregister_hook(&ipv6_conntrack_defrag_ops);
cleanup_ipv6:
nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6);
cleanup_icmpv6:
nf_conntrack_protocol_unregister(&nf_conntrack_protocol_icmpv6);
cleanup_udp:
nf_conntrack_protocol_unregister(&nf_conntrack_protocol_udp6);
cleanup_tcp:
nf_conntrack_protocol_unregister(&nf_conntrack_protocol_tcp6);
cleanup_frag6:
nf_ct_frag6_cleanup();
cleanup_nothing:
return ret;
}
