1 /* This file contains all the functions required for the standalone
4 These are not required by the compatibility layer.
7 /* (C) 1999-2001 Paul `Rusty' Russell
8 * (C) 2002-2005 Netfilter Core Team <coreteam@netfilter.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/config.h>
16 #include <linux/types.h>
18 #include <linux/netfilter.h>
19 #include <linux/netfilter_ipv4.h>
20 #include <linux/module.h>
21 #include <linux/skbuff.h>
22 #include <linux/proc_fs.h>
23 #include <linux/seq_file.h>
24 #include <linux/percpu.h>
26 #include <linux/sysctl.h>
28 #include <net/checksum.h>
30 #include <net/route.h>
32 #define ASSERT_READ_LOCK(x)
33 #define ASSERT_WRITE_LOCK(x)
35 #include <linux/netfilter_ipv4/ip_conntrack.h>
36 #include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
37 #include <linux/netfilter_ipv4/ip_conntrack_core.h>
38 #include <linux/netfilter_ipv4/ip_conntrack_helper.h>
39 #include <linux/netfilter_ipv4/listhelp.h>
44 #define DEBUGP(format, args...)
47 MODULE_LICENSE("GPL");
49 extern atomic_t ip_conntrack_count;
50 DECLARE_PER_CPU(struct ip_conntrack_stat, ip_conntrack_stat);
52 static int kill_proto(struct ip_conntrack *i, void *data)
54 return (i->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum ==
55 *((u_int8_t *) data));
60 print_tuple(struct seq_file *s, const struct ip_conntrack_tuple *tuple,
61 struct ip_conntrack_protocol *proto)
63 seq_printf(s, "src=%u.%u.%u.%u dst=%u.%u.%u.%u ",
64 NIPQUAD(tuple->src.ip), NIPQUAD(tuple->dst.ip));
65 return proto->print_tuple(s, tuple);
68 #ifdef CONFIG_IP_NF_CT_ACCT
70 seq_print_counters(struct seq_file *s,
71 const struct ip_conntrack_counter *counter)
73 return seq_printf(s, "packets=%llu bytes=%llu ",
74 (unsigned long long)counter->packets,
75 (unsigned long long)counter->bytes);
78 #define seq_print_counters(x, y) 0
81 struct ct_iter_state {
85 static struct list_head *ct_get_first(struct seq_file *seq)
87 struct ct_iter_state *st = seq->private;
90 st->bucket < ip_conntrack_htable_size;
92 if (!list_empty(&ip_conntrack_hash[st->bucket]))
93 return ip_conntrack_hash[st->bucket].next;
98 static struct list_head *ct_get_next(struct seq_file *seq, struct list_head *head)
100 struct ct_iter_state *st = seq->private;
103 while (head == &ip_conntrack_hash[st->bucket]) {
104 if (++st->bucket >= ip_conntrack_htable_size)
106 head = ip_conntrack_hash[st->bucket].next;
111 static struct list_head *ct_get_idx(struct seq_file *seq, loff_t pos)
113 struct list_head *head = ct_get_first(seq);
116 while (pos && (head = ct_get_next(seq, head)))
118 return pos ? NULL : head;
121 static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
123 read_lock_bh(&ip_conntrack_lock);
124 return ct_get_idx(seq, *pos);
127 static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
130 return ct_get_next(s, v);
133 static void ct_seq_stop(struct seq_file *s, void *v)
135 read_unlock_bh(&ip_conntrack_lock);
138 static int ct_seq_show(struct seq_file *s, void *v)
140 const struct ip_conntrack_tuple_hash *hash = v;
141 const struct ip_conntrack *conntrack = tuplehash_to_ctrack(hash);
142 struct ip_conntrack_protocol *proto;
144 ASSERT_READ_LOCK(&ip_conntrack_lock);
145 IP_NF_ASSERT(conntrack);
147 /* we only want to print DIR_ORIGINAL */
151 proto = __ip_conntrack_proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum);
154 if (seq_printf(s, "%-8s %u %ld ",
156 conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
157 timer_pending(&conntrack->timeout)
158 ? (long)(conntrack->timeout.expires - jiffies)/HZ
162 if (proto->print_conntrack(s, conntrack))
165 if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
169 if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL]))
172 if (!(test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)))
173 if (seq_printf(s, "[UNREPLIED] "))
176 if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple,
180 if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY]))
183 if (test_bit(IPS_ASSURED_BIT, &conntrack->status))
184 if (seq_printf(s, "[ASSURED] "))
187 #if defined(CONFIG_IP_NF_CONNTRACK_MARK)
188 if (seq_printf(s, "mark=%u ", conntrack->mark))
192 if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
198 static struct seq_operations ct_seq_ops = {
199 .start = ct_seq_start,
205 static int ct_open(struct inode *inode, struct file *file)
207 struct seq_file *seq;
208 struct ct_iter_state *st;
211 st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
214 ret = seq_open(file, &ct_seq_ops);
217 seq = file->private_data;
219 memset(st, 0, sizeof(struct ct_iter_state));
226 static struct file_operations ct_file_ops = {
227 .owner = THIS_MODULE,
231 .release = seq_release_private,
235 static void *exp_seq_start(struct seq_file *s, loff_t *pos)
237 struct list_head *e = &ip_conntrack_expect_list;
240 /* strange seq_file api calls stop even if we fail,
241 * thus we need to grab lock since stop unlocks */
242 read_lock_bh(&ip_conntrack_lock);
247 for (i = 0; i <= *pos; i++) {
249 if (e == &ip_conntrack_expect_list)
255 static void *exp_seq_next(struct seq_file *s, void *v, loff_t *pos)
257 struct list_head *e = v;
262 if (e == &ip_conntrack_expect_list)
268 static void exp_seq_stop(struct seq_file *s, void *v)
270 read_unlock_bh(&ip_conntrack_lock);
273 static int exp_seq_show(struct seq_file *s, void *v)
275 struct ip_conntrack_expect *expect = v;
277 if (expect->timeout.function)
278 seq_printf(s, "%ld ", timer_pending(&expect->timeout)
279 ? (long)(expect->timeout.expires - jiffies)/HZ : 0);
283 seq_printf(s, "proto=%u ", expect->tuple.dst.protonum);
285 print_tuple(s, &expect->tuple,
286 __ip_conntrack_proto_find(expect->tuple.dst.protonum));
287 return seq_putc(s, '\n');
290 static struct seq_operations exp_seq_ops = {
291 .start = exp_seq_start,
292 .next = exp_seq_next,
293 .stop = exp_seq_stop,
297 static int exp_open(struct inode *inode, struct file *file)
299 return seq_open(file, &exp_seq_ops);
302 static struct file_operations exp_file_ops = {
303 .owner = THIS_MODULE,
307 .release = seq_release
310 static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
315 return SEQ_START_TOKEN;
317 for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
318 if (!cpu_possible(cpu))
321 return &per_cpu(ip_conntrack_stat, cpu);
327 static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
331 for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
332 if (!cpu_possible(cpu))
335 return &per_cpu(ip_conntrack_stat, cpu);
341 static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
345 static int ct_cpu_seq_show(struct seq_file *seq, void *v)
347 unsigned int nr_conntracks = atomic_read(&ip_conntrack_count);
348 struct ip_conntrack_stat *st = v;
350 if (v == SEQ_START_TOKEN) {
351 seq_printf(seq, "entries searched found new invalid ignore delete delete_list insert insert_failed drop early_drop icmp_error expect_new expect_create expect_delete\n");
355 seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
356 "%08x %08x %08x %08x %08x %08x %08x %08x \n",
378 static struct seq_operations ct_cpu_seq_ops = {
379 .start = ct_cpu_seq_start,
380 .next = ct_cpu_seq_next,
381 .stop = ct_cpu_seq_stop,
382 .show = ct_cpu_seq_show,
385 static int ct_cpu_seq_open(struct inode *inode, struct file *file)
387 return seq_open(file, &ct_cpu_seq_ops);
390 static struct file_operations ct_cpu_seq_fops = {
391 .owner = THIS_MODULE,
392 .open = ct_cpu_seq_open,
395 .release = seq_release_private,
399 static unsigned int ip_confirm(unsigned int hooknum,
400 struct sk_buff **pskb,
401 const struct net_device *in,
402 const struct net_device *out,
403 int (*okfn)(struct sk_buff *))
405 /* We've seen it coming out the other side: confirm it */
406 return ip_conntrack_confirm(pskb);
409 static unsigned int ip_conntrack_help(unsigned int hooknum,
410 struct sk_buff **pskb,
411 const struct net_device *in,
412 const struct net_device *out,
413 int (*okfn)(struct sk_buff *))
415 struct ip_conntrack *ct;
416 enum ip_conntrack_info ctinfo;
418 /* This is where we call the helper: as the packet goes out. */
419 ct = ip_conntrack_get(*pskb, &ctinfo);
420 if (ct && ct->helper) {
422 ret = ct->helper->help(pskb, ct, ctinfo);
423 if (ret != NF_ACCEPT)
429 static unsigned int ip_conntrack_defrag(unsigned int hooknum,
430 struct sk_buff **pskb,
431 const struct net_device *in,
432 const struct net_device *out,
433 int (*okfn)(struct sk_buff *))
435 #if !defined(CONFIG_IP_NF_NAT) && !defined(CONFIG_IP_NF_NAT_MODULE)
436 /* Previously seen (loopback)? Ignore. Do this before
442 /* Gather fragments. */
443 if ((*pskb)->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
444 *pskb = ip_ct_gather_frags(*pskb,
445 hooknum == NF_IP_PRE_ROUTING ?
446 IP_DEFRAG_CONNTRACK_IN :
447 IP_DEFRAG_CONNTRACK_OUT);
454 static unsigned int ip_conntrack_local(unsigned int hooknum,
455 struct sk_buff **pskb,
456 const struct net_device *in,
457 const struct net_device *out,
458 int (*okfn)(struct sk_buff *))
460 /* root is playing with raw sockets. */
461 if ((*pskb)->len < sizeof(struct iphdr)
462 || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) {
464 printk("ipt_hook: happy cracking.\n");
467 return ip_conntrack_in(hooknum, pskb, in, out, okfn);
470 /* Connection tracking may drop packets, but never alters them, so
471 make it the first hook. */
472 static struct nf_hook_ops ip_conntrack_ops[] = {
474 .hook = ip_conntrack_defrag,
475 .owner = THIS_MODULE,
477 .hooknum = NF_IP_PRE_ROUTING,
478 .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
481 .hook = ip_conntrack_in,
482 .owner = THIS_MODULE,
484 .hooknum = NF_IP_PRE_ROUTING,
485 .priority = NF_IP_PRI_CONNTRACK,
488 .hook = ip_conntrack_defrag,
489 .owner = THIS_MODULE,
491 .hooknum = NF_IP_LOCAL_OUT,
492 .priority = NF_IP_PRI_CONNTRACK_DEFRAG,
495 .hook = ip_conntrack_local,
496 .owner = THIS_MODULE,
498 .hooknum = NF_IP_LOCAL_OUT,
499 .priority = NF_IP_PRI_CONNTRACK,
502 .hook = ip_conntrack_help,
503 .owner = THIS_MODULE,
505 .hooknum = NF_IP_POST_ROUTING,
506 .priority = NF_IP_PRI_CONNTRACK_HELPER,
509 .hook = ip_conntrack_help,
510 .owner = THIS_MODULE,
512 .hooknum = NF_IP_LOCAL_IN,
513 .priority = NF_IP_PRI_CONNTRACK_HELPER,
517 .owner = THIS_MODULE,
519 .hooknum = NF_IP_POST_ROUTING,
520 .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
524 .owner = THIS_MODULE,
526 .hooknum = NF_IP_LOCAL_IN,
527 .priority = NF_IP_PRI_CONNTRACK_CONFIRM,
535 /* From ip_conntrack_core.c */
536 extern int ip_conntrack_max;
537 extern unsigned int ip_conntrack_htable_size;
539 /* From ip_conntrack_proto_tcp.c */
540 extern unsigned int ip_ct_tcp_timeout_syn_sent;
541 extern unsigned int ip_ct_tcp_timeout_syn_recv;
542 extern unsigned int ip_ct_tcp_timeout_established;
543 extern unsigned int ip_ct_tcp_timeout_fin_wait;
544 extern unsigned int ip_ct_tcp_timeout_close_wait;
545 extern unsigned int ip_ct_tcp_timeout_last_ack;
546 extern unsigned int ip_ct_tcp_timeout_time_wait;
547 extern unsigned int ip_ct_tcp_timeout_close;
548 extern unsigned int ip_ct_tcp_timeout_max_retrans;
549 extern int ip_ct_tcp_loose;
550 extern int ip_ct_tcp_be_liberal;
551 extern int ip_ct_tcp_max_retrans;
553 /* From ip_conntrack_proto_udp.c */
554 extern unsigned int ip_ct_udp_timeout;
555 extern unsigned int ip_ct_udp_timeout_stream;
557 /* From ip_conntrack_proto_icmp.c */
558 extern unsigned int ip_ct_icmp_timeout;
560 /* From ip_conntrack_proto_icmp.c */
561 extern unsigned int ip_ct_generic_timeout;
563 /* Log invalid packets of a given protocol */
564 static int log_invalid_proto_min = 0;
565 static int log_invalid_proto_max = 255;
567 static struct ctl_table_header *ip_ct_sysctl_header;
569 static ctl_table ip_ct_sysctl_table[] = {
571 .ctl_name = NET_IPV4_NF_CONNTRACK_MAX,
572 .procname = "ip_conntrack_max",
573 .data = &ip_conntrack_max,
574 .maxlen = sizeof(int),
576 .proc_handler = &proc_dointvec,
579 .ctl_name = NET_IPV4_NF_CONNTRACK_COUNT,
580 .procname = "ip_conntrack_count",
581 .data = &ip_conntrack_count,
582 .maxlen = sizeof(int),
584 .proc_handler = &proc_dointvec,
587 .ctl_name = NET_IPV4_NF_CONNTRACK_BUCKETS,
588 .procname = "ip_conntrack_buckets",
589 .data = &ip_conntrack_htable_size,
590 .maxlen = sizeof(unsigned int),
592 .proc_handler = &proc_dointvec,
595 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
596 .procname = "ip_conntrack_tcp_timeout_syn_sent",
597 .data = &ip_ct_tcp_timeout_syn_sent,
598 .maxlen = sizeof(unsigned int),
600 .proc_handler = &proc_dointvec_jiffies,
603 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
604 .procname = "ip_conntrack_tcp_timeout_syn_recv",
605 .data = &ip_ct_tcp_timeout_syn_recv,
606 .maxlen = sizeof(unsigned int),
608 .proc_handler = &proc_dointvec_jiffies,
611 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
612 .procname = "ip_conntrack_tcp_timeout_established",
613 .data = &ip_ct_tcp_timeout_established,
614 .maxlen = sizeof(unsigned int),
616 .proc_handler = &proc_dointvec_jiffies,
619 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
620 .procname = "ip_conntrack_tcp_timeout_fin_wait",
621 .data = &ip_ct_tcp_timeout_fin_wait,
622 .maxlen = sizeof(unsigned int),
624 .proc_handler = &proc_dointvec_jiffies,
627 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
628 .procname = "ip_conntrack_tcp_timeout_close_wait",
629 .data = &ip_ct_tcp_timeout_close_wait,
630 .maxlen = sizeof(unsigned int),
632 .proc_handler = &proc_dointvec_jiffies,
635 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
636 .procname = "ip_conntrack_tcp_timeout_last_ack",
637 .data = &ip_ct_tcp_timeout_last_ack,
638 .maxlen = sizeof(unsigned int),
640 .proc_handler = &proc_dointvec_jiffies,
643 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
644 .procname = "ip_conntrack_tcp_timeout_time_wait",
645 .data = &ip_ct_tcp_timeout_time_wait,
646 .maxlen = sizeof(unsigned int),
648 .proc_handler = &proc_dointvec_jiffies,
651 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
652 .procname = "ip_conntrack_tcp_timeout_close",
653 .data = &ip_ct_tcp_timeout_close,
654 .maxlen = sizeof(unsigned int),
656 .proc_handler = &proc_dointvec_jiffies,
659 .ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT,
660 .procname = "ip_conntrack_udp_timeout",
661 .data = &ip_ct_udp_timeout,
662 .maxlen = sizeof(unsigned int),
664 .proc_handler = &proc_dointvec_jiffies,
667 .ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
668 .procname = "ip_conntrack_udp_timeout_stream",
669 .data = &ip_ct_udp_timeout_stream,
670 .maxlen = sizeof(unsigned int),
672 .proc_handler = &proc_dointvec_jiffies,
675 .ctl_name = NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT,
676 .procname = "ip_conntrack_icmp_timeout",
677 .data = &ip_ct_icmp_timeout,
678 .maxlen = sizeof(unsigned int),
680 .proc_handler = &proc_dointvec_jiffies,
683 .ctl_name = NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT,
684 .procname = "ip_conntrack_generic_timeout",
685 .data = &ip_ct_generic_timeout,
686 .maxlen = sizeof(unsigned int),
688 .proc_handler = &proc_dointvec_jiffies,
691 .ctl_name = NET_IPV4_NF_CONNTRACK_LOG_INVALID,
692 .procname = "ip_conntrack_log_invalid",
693 .data = &ip_ct_log_invalid,
694 .maxlen = sizeof(unsigned int),
696 .proc_handler = &proc_dointvec_minmax,
697 .strategy = &sysctl_intvec,
698 .extra1 = &log_invalid_proto_min,
699 .extra2 = &log_invalid_proto_max,
702 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
703 .procname = "ip_conntrack_tcp_timeout_max_retrans",
704 .data = &ip_ct_tcp_timeout_max_retrans,
705 .maxlen = sizeof(unsigned int),
707 .proc_handler = &proc_dointvec_jiffies,
710 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_LOOSE,
711 .procname = "ip_conntrack_tcp_loose",
712 .data = &ip_ct_tcp_loose,
713 .maxlen = sizeof(unsigned int),
715 .proc_handler = &proc_dointvec,
718 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL,
719 .procname = "ip_conntrack_tcp_be_liberal",
720 .data = &ip_ct_tcp_be_liberal,
721 .maxlen = sizeof(unsigned int),
723 .proc_handler = &proc_dointvec,
726 .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS,
727 .procname = "ip_conntrack_tcp_max_retrans",
728 .data = &ip_ct_tcp_max_retrans,
729 .maxlen = sizeof(unsigned int),
731 .proc_handler = &proc_dointvec,
736 #define NET_IP_CONNTRACK_MAX 2089
738 static ctl_table ip_ct_netfilter_table[] = {
740 .ctl_name = NET_IPV4_NETFILTER,
741 .procname = "netfilter",
743 .child = ip_ct_sysctl_table,
746 .ctl_name = NET_IP_CONNTRACK_MAX,
747 .procname = "ip_conntrack_max",
748 .data = &ip_conntrack_max,
749 .maxlen = sizeof(int),
751 .proc_handler = &proc_dointvec
756 static ctl_table ip_ct_ipv4_table[] = {
758 .ctl_name = NET_IPV4,
761 .child = ip_ct_netfilter_table,
766 static ctl_table ip_ct_net_table[] = {
771 .child = ip_ct_ipv4_table,
776 EXPORT_SYMBOL(ip_ct_log_invalid);
777 #endif /* CONFIG_SYSCTL */
779 /* FIXME: Allow NULL functions and sub in pointers to generic for
781 int ip_conntrack_protocol_register(struct ip_conntrack_protocol *proto)
785 write_lock_bh(&ip_conntrack_lock);
786 if (ip_ct_protos[proto->proto] != &ip_conntrack_generic_protocol) {
790 ip_ct_protos[proto->proto] = proto;
792 write_unlock_bh(&ip_conntrack_lock);
796 void ip_conntrack_protocol_unregister(struct ip_conntrack_protocol *proto)
798 write_lock_bh(&ip_conntrack_lock);
799 ip_ct_protos[proto->proto] = &ip_conntrack_generic_protocol;
800 write_unlock_bh(&ip_conntrack_lock);
802 /* Somebody could be still looking at the proto in bh. */
805 /* Remove all contrack entries for this protocol */
806 ip_ct_iterate_cleanup(kill_proto, &proto->proto);
809 static int __init ip_conntrack_standalone_init(void)
811 #ifdef CONFIG_PROC_FS
812 struct proc_dir_entry *proc, *proc_exp, *proc_stat;
816 ret = ip_conntrack_init();
820 #ifdef CONFIG_PROC_FS
822 proc = proc_net_fops_create("ip_conntrack", 0440, &ct_file_ops);
823 if (!proc) goto cleanup_init;
825 proc_exp = proc_net_fops_create("ip_conntrack_expect", 0440,
827 if (!proc_exp) goto cleanup_proc;
829 proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, proc_net_stat);
831 goto cleanup_proc_exp;
833 proc_stat->proc_fops = &ct_cpu_seq_fops;
834 proc_stat->owner = THIS_MODULE;
837 ret = nf_register_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops));
839 printk("ip_conntrack: can't register hooks.\n");
840 goto cleanup_proc_stat;
843 ip_ct_sysctl_header = register_sysctl_table(ip_ct_net_table, 0);
844 if (ip_ct_sysctl_header == NULL) {
845 printk("ip_conntrack: can't register to sysctl.\n");
854 nf_unregister_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops));
857 #ifdef CONFIG_PROC_FS
858 remove_proc_entry("ip_conntrack", proc_net_stat);
860 proc_net_remove("ip_conntrack_expect");
862 proc_net_remove("ip_conntrack");
864 #endif /* CONFIG_PROC_FS */
865 ip_conntrack_cleanup();
869 static void __exit ip_conntrack_standalone_fini(void)
873 unregister_sysctl_table(ip_ct_sysctl_header);
875 nf_unregister_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops));
876 #ifdef CONFIG_PROC_FS
877 remove_proc_entry("ip_conntrack", proc_net_stat);
878 proc_net_remove("ip_conntrack_expect");
879 proc_net_remove("ip_conntrack");
880 #endif /* CONFIG_PROC_FS */
881 ip_conntrack_cleanup();
884 module_init(ip_conntrack_standalone_init);
885 module_exit(ip_conntrack_standalone_fini);
887 /* Some modules need us, but don't depend directly on any symbol.
888 They should call this. */
889 void need_conntrack(void)
893 #ifdef CONFIG_IP_NF_CONNTRACK_EVENTS
894 EXPORT_SYMBOL_GPL(ip_conntrack_chain);
895 EXPORT_SYMBOL_GPL(ip_conntrack_expect_chain);
896 EXPORT_SYMBOL_GPL(ip_conntrack_register_notifier);
897 EXPORT_SYMBOL_GPL(ip_conntrack_unregister_notifier);
898 EXPORT_SYMBOL_GPL(__ip_ct_event_cache_init);
899 EXPORT_PER_CPU_SYMBOL_GPL(ip_conntrack_ecache);
901 EXPORT_SYMBOL(ip_conntrack_protocol_register);
902 EXPORT_SYMBOL(ip_conntrack_protocol_unregister);
903 EXPORT_SYMBOL(ip_ct_get_tuple);
904 EXPORT_SYMBOL(invert_tuplepr);
905 EXPORT_SYMBOL(ip_conntrack_alter_reply);
906 EXPORT_SYMBOL(ip_conntrack_destroyed);
907 EXPORT_SYMBOL(need_conntrack);
908 EXPORT_SYMBOL(ip_conntrack_helper_register);
909 EXPORT_SYMBOL(ip_conntrack_helper_unregister);
910 EXPORT_SYMBOL(ip_ct_iterate_cleanup);
911 EXPORT_SYMBOL(__ip_ct_refresh_acct);
913 EXPORT_SYMBOL(ip_conntrack_expect_alloc);
914 EXPORT_SYMBOL(ip_conntrack_expect_put);
915 EXPORT_SYMBOL_GPL(__ip_conntrack_expect_find);
916 EXPORT_SYMBOL_GPL(ip_conntrack_expect_find);
917 EXPORT_SYMBOL(ip_conntrack_expect_related);
918 EXPORT_SYMBOL(ip_conntrack_unexpect_related);
919 EXPORT_SYMBOL_GPL(ip_conntrack_expect_list);
920 EXPORT_SYMBOL_GPL(ip_ct_unlink_expect);
922 EXPORT_SYMBOL(ip_conntrack_tuple_taken);
923 EXPORT_SYMBOL(ip_ct_gather_frags);
924 EXPORT_SYMBOL(ip_conntrack_htable_size);
925 EXPORT_SYMBOL(ip_conntrack_lock);
926 EXPORT_SYMBOL(ip_conntrack_hash);
927 EXPORT_SYMBOL(ip_conntrack_untracked);
928 EXPORT_SYMBOL_GPL(ip_conntrack_find_get);
929 #ifdef CONFIG_IP_NF_NAT_NEEDED
930 EXPORT_SYMBOL(ip_conntrack_tcp_update);
933 EXPORT_SYMBOL_GPL(ip_conntrack_flush);
934 EXPORT_SYMBOL_GPL(__ip_conntrack_find);
936 EXPORT_SYMBOL_GPL(ip_conntrack_alloc);
937 EXPORT_SYMBOL_GPL(ip_conntrack_free);
938 EXPORT_SYMBOL_GPL(ip_conntrack_hash_insert);
940 EXPORT_SYMBOL_GPL(ip_ct_remove_expectations);
942 EXPORT_SYMBOL_GPL(ip_conntrack_helper_find_get);
943 EXPORT_SYMBOL_GPL(ip_conntrack_helper_put);
944 EXPORT_SYMBOL_GPL(__ip_conntrack_helper_find_byname);
946 EXPORT_SYMBOL_GPL(ip_conntrack_proto_find_get);
947 EXPORT_SYMBOL_GPL(ip_conntrack_proto_put);
948 EXPORT_SYMBOL_GPL(__ip_conntrack_proto_find);
949 #if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \
950 defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE)
951 EXPORT_SYMBOL_GPL(ip_ct_port_tuple_to_nfattr);
952 EXPORT_SYMBOL_GPL(ip_ct_port_nfattr_to_tuple);