/* Connection tracking may drop packets, but never alters them, so
make it the first hook. */
-static struct nf_hook_ops ipv4_conntrack_defrag_ops = {
- .hook = ipv4_conntrack_defrag,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_PRE_ROUTING,
- .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
-};
-
-static struct nf_hook_ops ipv4_conntrack_in_ops = {
- .hook = ipv4_conntrack_in,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_PRE_ROUTING,
- .priority = NF_IP_PRI_CONNTRACK,
-};
-
-static struct nf_hook_ops ipv4_conntrack_defrag_local_out_ops = {
- .hook = ipv4_conntrack_defrag,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_LOCAL_OUT,
- .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
-};
-
-static struct nf_hook_ops ipv4_conntrack_local_out_ops = {
- .hook = ipv4_conntrack_local,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_LOCAL_OUT,
- .priority = NF_IP_PRI_CONNTRACK,
-};
-
-/* helpers */
-static struct nf_hook_ops ipv4_conntrack_helper_out_ops = {
- .hook = ipv4_conntrack_help,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_POST_ROUTING,
- .priority = NF_IP_PRI_CONNTRACK_HELPER,
-};
-
-static struct nf_hook_ops ipv4_conntrack_helper_in_ops = {
- .hook = ipv4_conntrack_help,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_LOCAL_IN,
- .priority = NF_IP_PRI_CONNTRACK_HELPER,
-};
-
-
-/* Refragmenter; last chance. */
-static struct nf_hook_ops ipv4_conntrack_out_ops = {
- .hook = ipv4_confirm,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_POST_ROUTING,
- .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
-};
-
-static struct nf_hook_ops ipv4_conntrack_local_in_ops = {
- .hook = ipv4_confirm,
- .owner = THIS_MODULE,
- .pf = PF_INET,
- .hooknum = NF_IP_LOCAL_IN,
- .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
+static struct nf_hook_ops ipv4_conntrack_ops[] = {
+ {
+ .hook = ipv4_conntrack_defrag,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_PRE_ROUTING,
+ .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
+ },
+ {
+ .hook = ipv4_conntrack_in,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_PRE_ROUTING,
+ .priority = NF_IP_PRI_CONNTRACK,
+ },
+ {
+ .hook = ipv4_conntrack_defrag,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_LOCAL_OUT,
+ .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
+ },
+ {
+ .hook = ipv4_conntrack_local,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_LOCAL_OUT,
+ .priority = NF_IP_PRI_CONNTRACK,
+ },
+ {
+ .hook = ipv4_conntrack_help,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_POST_ROUTING,
+ .priority = NF_IP_PRI_CONNTRACK_HELPER,
+ },
+ {
+ .hook = ipv4_conntrack_help,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_LOCAL_IN,
+ .priority = NF_IP_PRI_CONNTRACK_HELPER,
+ },
+ {
+ .hook = ipv4_confirm,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_POST_ROUTING,
+ .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
+ },
+ {
+ .hook = ipv4_confirm,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_LOCAL_IN,
+ .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
+ },
};
#ifdef CONFIG_SYSCTL
extern struct nf_conntrack_protocol nf_conntrack_protocol_tcp4;
extern struct nf_conntrack_protocol nf_conntrack_protocol_udp4;
extern struct nf_conntrack_protocol nf_conntrack_protocol_icmp;
-static int init_or_cleanup(int init)
+
+MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET));
+MODULE_LICENSE("GPL");
+
+static int __init nf_conntrack_l3proto_ipv4_init(void)
{
int ret = 0;
- if (!init) goto cleanup;
+ need_conntrack();
ret = nf_register_sockopt(&so_getorigdst);
if (ret < 0) {
printk(KERN_ERR "Unable to register netfilter socket option\n");
- goto cleanup_nothing;
+ return ret;
}
ret = nf_conntrack_protocol_register(&nf_conntrack_protocol_tcp4);
goto cleanup_icmp;
}
- ret = nf_register_hook(&ipv4_conntrack_defrag_ops);
+ ret = nf_register_hooks(ipv4_conntrack_ops,
+ ARRAY_SIZE(ipv4_conntrack_ops));
if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register pre-routing defrag hook.\n");
+ printk("nf_conntrack_ipv4: can't register hooks.\n");
goto cleanup_ipv4;
}
- ret = nf_register_hook(&ipv4_conntrack_defrag_local_out_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register local_out defrag hook.\n");
- goto cleanup_defragops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_in_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register pre-routing hook.\n");
- goto cleanup_defraglocalops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_local_out_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register local out hook.\n");
- goto cleanup_inops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_helper_in_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register local helper hook.\n");
- goto cleanup_inandlocalops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_helper_out_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register postrouting helper hook.\n");
- goto cleanup_helperinops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_out_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register post-routing hook.\n");
- goto cleanup_helperoutops;
- }
-
- ret = nf_register_hook(&ipv4_conntrack_local_in_ops);
- if (ret < 0) {
- printk("nf_conntrack_ipv4: can't register local in hook.\n");
- goto cleanup_inoutandlocalops;
- }
-
#ifdef CONFIG_SYSCTL
nf_ct_ipv4_sysctl_header = register_sysctl_table(nf_ct_net_table, 0);
if (nf_ct_ipv4_sysctl_header == NULL) {
printk("nf_conntrack: can't register to sysctl.\n");
ret = -ENOMEM;
- goto cleanup_localinops;
+ goto cleanup_hooks;
}
#endif
return ret;
- cleanup:
- synchronize_net();
#ifdef CONFIG_SYSCTL
- unregister_sysctl_table(nf_ct_ipv4_sysctl_header);
- cleanup_localinops:
+ cleanup_hooks:
+ nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
#endif
- nf_unregister_hook(&ipv4_conntrack_local_in_ops);
- cleanup_inoutandlocalops:
- nf_unregister_hook(&ipv4_conntrack_out_ops);
- cleanup_helperoutops:
- nf_unregister_hook(&ipv4_conntrack_helper_out_ops);
- cleanup_helperinops:
- nf_unregister_hook(&ipv4_conntrack_helper_in_ops);
- cleanup_inandlocalops:
- nf_unregister_hook(&ipv4_conntrack_local_out_ops);
- cleanup_inops:
- nf_unregister_hook(&ipv4_conntrack_in_ops);
- cleanup_defraglocalops:
- nf_unregister_hook(&ipv4_conntrack_defrag_local_out_ops);
- cleanup_defragops:
- nf_unregister_hook(&ipv4_conntrack_defrag_ops);
cleanup_ipv4:
nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
cleanup_icmp:
nf_conntrack_protocol_unregister(&nf_conntrack_protocol_tcp4);
cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst);
- cleanup_nothing:
return ret;
}
-MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET));
-MODULE_LICENSE("GPL");
-
-static int __init init(void)
-{
- need_conntrack();
- return init_or_cleanup(1);
-}
-
-static void __exit fini(void)
+static void __exit nf_conntrack_l3proto_ipv4_fini(void)
{
- init_or_cleanup(0);
+ synchronize_net();
+#ifdef CONFIG_SYSCTL
+ unregister_sysctl_table(nf_ct_ipv4_sysctl_header);
+#endif
+ nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
+ nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv4);
+ nf_conntrack_protocol_unregister(&nf_conntrack_protocol_icmp);
+ nf_conntrack_protocol_unregister(&nf_conntrack_protocol_udp4);
+ nf_conntrack_protocol_unregister(&nf_conntrack_protocol_tcp4);
+ nf_unregister_sockopt(&so_getorigdst);
}
-module_init(init);
-module_exit(fini);
+module_init(nf_conntrack_l3proto_ipv4_init);
+module_exit(nf_conntrack_l3proto_ipv4_fini);
EXPORT_SYMBOL(nf_ct_ipv4_gather_frags);
Code Review / linux-2.6.git / blobdiff