* structures.
*/
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/ipv6.h>
#include <linux/in6.h>
#include <linux/netfilter_ipv6.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_helper.h>
-#include <net/netfilter/nf_conntrack_protocol.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#define DEBUGP(format, args...)
#endif
-DECLARE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat);
-
static int ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
struct nf_conntrack_tuple *tuple)
{
int (*okfn)(struct sk_buff *))
{
struct nf_conn *ct;
+ struct nf_conn_help *help;
enum ip_conntrack_info ctinfo;
+ unsigned int ret, protoff;
+ unsigned int extoff = (u8*)((*pskb)->nh.ipv6h + 1)
+ - (*pskb)->data;
+ unsigned char pnum = (*pskb)->nh.ipv6h->nexthdr;
+
/* This is where we call the helper: as the packet goes out. */
ct = nf_ct_get(*pskb, &ctinfo);
- if (ct && ct->helper) {
- unsigned int ret, protoff;
- unsigned int extoff = (u8*)((*pskb)->nh.ipv6h + 1)
- - (*pskb)->data;
- unsigned char pnum = (*pskb)->nh.ipv6h->nexthdr;
-
- protoff = nf_ct_ipv6_skip_exthdr(*pskb, extoff, &pnum,
- (*pskb)->len - extoff);
- if (protoff < 0 || protoff > (*pskb)->len ||
- pnum == NEXTHDR_FRAGMENT) {
- DEBUGP("proto header not found\n");
- return NF_ACCEPT;
- }
+ if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)
+ goto out;
- ret = ct->helper->help(pskb, protoff, ct, ctinfo);
- if (ret != NF_ACCEPT)
- return ret;
+ help = nfct_help(ct);
+ if (!help || !help->helper)
+ goto out;
+
+ protoff = nf_ct_ipv6_skip_exthdr(*pskb, extoff, &pnum,
+ (*pskb)->len - extoff);
+ if (protoff < 0 || protoff > (*pskb)->len ||
+ pnum == NEXTHDR_FRAGMENT) {
+ DEBUGP("proto header not found\n");
+ return NF_ACCEPT;
}
+ ret = help->helper->help(pskb, protoff, ct, ctinfo);
+ if (ret != NF_ACCEPT)
+ return ret;
+out:
/* We've seen it coming out the other side: confirm it */
-
return nf_conntrack_confirm(pskb);
}
-extern struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb);
-extern void nf_ct_frag6_output(unsigned int hooknum, struct sk_buff *skb,
- struct net_device *in,
- struct net_device *out,
- int (*okfn)(struct sk_buff *));
static unsigned int ipv6_defrag(unsigned int hooknum,
struct sk_buff **pskb,
const struct net_device *in,
}
nf_conntrack_get(reasm->nfct);
(*pskb)->nfct = reasm->nfct;
+ (*pskb)->nfctinfo = reasm->nfctinfo;
return NF_ACCEPT;
}
return ipv6_conntrack_in(hooknum, pskb, in, out, okfn);
}
-/* Connection tracking may drop packets, but never alters them, so
- make it the first hook. */
-static struct nf_hook_ops ipv6_conntrack_defrag_ops = {
- .hook = ipv6_defrag,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_PRE_ROUTING,
- .priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
-};
-
-static struct nf_hook_ops ipv6_conntrack_in_ops = {
- .hook = ipv6_conntrack_in,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_PRE_ROUTING,
- .priority = NF_IP6_PRI_CONNTRACK,
-};
-
-static struct nf_hook_ops ipv6_conntrack_local_out_ops = {
- .hook = ipv6_conntrack_local,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_OUT,
- .priority = NF_IP6_PRI_CONNTRACK,
-};
-
-static struct nf_hook_ops ipv6_conntrack_defrag_local_out_ops = {
- .hook = ipv6_defrag,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_OUT,
- .priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
-};
-
-/* Refragmenter; last chance. */
-static struct nf_hook_ops ipv6_conntrack_out_ops = {
- .hook = ipv6_confirm,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_POST_ROUTING,
- .priority = NF_IP6_PRI_LAST,
-};
-
-static struct nf_hook_ops ipv6_conntrack_local_in_ops = {
- .hook = ipv6_confirm,
- .owner = THIS_MODULE,
- .pf = PF_INET6,
- .hooknum = NF_IP6_LOCAL_IN,
- .priority = NF_IP6_PRI_LAST-1,
+static struct nf_hook_ops ipv6_conntrack_ops[] = {
+ {
+ .hook = ipv6_defrag,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_PRE_ROUTING,
+ .priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
+ },
+ {
+ .hook = ipv6_conntrack_in,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_PRE_ROUTING,
+ .priority = NF_IP6_PRI_CONNTRACK,
+ },
+ {
+ .hook = ipv6_conntrack_local,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_LOCAL_OUT,
+ .priority = NF_IP6_PRI_CONNTRACK,
+ },
+ {
+ .hook = ipv6_defrag,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_LOCAL_OUT,
+ .priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
+ },
+ {
+ .hook = ipv6_confirm,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_POST_ROUTING,
+ .priority = NF_IP6_PRI_LAST,
+ },
+ {
+ .hook = ipv6_confirm,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_LOCAL_IN,
+ .priority = NF_IP6_PRI_LAST-1,
+ },
};
#ifdef CONFIG_SYSCTL
-
-/* From nf_conntrack_proto_icmpv6.c */
-extern unsigned int nf_ct_icmpv6_timeout;
-
-/* From nf_conntrack_frag6.c */
-extern unsigned int nf_ct_frag6_timeout;
-extern unsigned int nf_ct_frag6_low_thresh;
-extern unsigned int nf_ct_frag6_high_thresh;
-
-static struct ctl_table_header *nf_ct_ipv6_sysctl_header;
-
-static ctl_table nf_ct_sysctl_table[] = {
- {
- .ctl_name = NET_NF_CONNTRACK_ICMPV6_TIMEOUT,
- .procname = "nf_conntrack_icmpv6_timeout",
- .data = &nf_ct_icmpv6_timeout,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
+static ctl_table nf_ct_ipv6_sysctl_table[] = {
{
.ctl_name = NET_NF_CONNTRACK_FRAG6_TIMEOUT,
.procname = "nf_conntrack_frag6_timeout",
},
{ .ctl_name = 0 }
};
-
-static ctl_table nf_ct_netfilter_table[] = {
- {
- .ctl_name = NET_NETFILTER,
- .procname = "netfilter",
- .mode = 0555,
- .child = nf_ct_sysctl_table,
- },
- { .ctl_name = 0 }
-};
-
-static ctl_table nf_ct_net_table[] = {
- {
- .ctl_name = CTL_NET,
- .procname = "net",
- .mode = 0555,
- .child = nf_ct_netfilter_table,
- },
- { .ctl_name = 0 }
-};
#endif
#if defined(CONFIG_NF_CT_NETLINK) || \
defined(CONFIG_NF_CT_NETLINK_MODULE)
.tuple_to_nfattr = ipv6_tuple_to_nfattr,
.nfattr_to_tuple = ipv6_nfattr_to_tuple,
+#endif
+#ifdef CONFIG_SYSCTL
+ .ctl_table_path = nf_net_netfilter_sysctl_path,
+ .ctl_table = nf_ct_ipv6_sysctl_table,
#endif
.get_features = ipv6_get_features,
.me = THIS_MODULE,
};
-extern struct nf_conntrack_protocol nf_conntrack_protocol_tcp6;
-extern struct nf_conntrack_protocol nf_conntrack_protocol_udp6;
-extern struct nf_conntrack_protocol nf_conntrack_protocol_icmpv6;
-extern int nf_ct_frag6_init(void);
-extern void nf_ct_frag6_cleanup(void);
-static int init_or_cleanup(int init)
+MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET6));
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Yasuyuki KOZAKAI @USAGI <yasuyuki.kozakai@toshiba.co.jp>");
+
+static int __init nf_conntrack_l3proto_ipv6_init(void)
{
int ret = 0;
- if (!init) goto cleanup;
+ need_conntrack();
ret = nf_ct_frag6_init();
if (ret < 0) {
printk("nf_conntrack_ipv6: can't initialize frag6.\n");
- goto cleanup_nothing;
+ return ret;
}
- ret = nf_conntrack_protocol_register(&nf_conntrack_protocol_tcp6);
+ 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_protocol_register(&nf_conntrack_protocol_udp6);
+ 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_protocol_register(&nf_conntrack_protocol_icmpv6);
+ ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_icmpv6);
if (ret < 0) {
printk("nf_conntrack_ipv6: can't register icmpv6.\n");
goto cleanup_udp;
goto cleanup_icmpv6;
}
- ret = nf_register_hook(&ipv6_conntrack_defrag_ops);
+ 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;
}
-
- 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);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6);
cleanup_udp:
- nf_conntrack_protocol_unregister(&nf_conntrack_protocol_udp6);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6);
cleanup_tcp:
- nf_conntrack_protocol_unregister(&nf_conntrack_protocol_tcp6);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6);
cleanup_frag6:
nf_ct_frag6_cleanup();
- cleanup_nothing:
return ret;
}
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Yasuyuki KOZAKAI @USAGI <yasuyuki.kozakai@toshiba.co.jp>");
-
-static int __init init(void)
-{
- need_conntrack();
- return init_or_cleanup(1);
-}
-
-static void __exit fini(void)
+static void __exit nf_conntrack_l3proto_ipv6_fini(void)
{
- init_or_cleanup(0);
+ synchronize_net();
+ nf_unregister_hooks(ipv6_conntrack_ops, ARRAY_SIZE(ipv6_conntrack_ops));
+ nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6);
+ nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6);
+ nf_ct_frag6_cleanup();
}
-module_init(init);
-module_exit(fini);
+module_init(nf_conntrack_l3proto_ipv6_init);
+module_exit(nf_conntrack_l3proto_ipv6_fini);
git://git.onelab.eu / linux-2.6.git / blobdiff