[NETFILTER]: nf_conntrack: move extern declaration to header files
[linux-2.6.git] / net / netfilter / nf_conntrack_standalone.c
1 /* This file contains all the functions required for the standalone
2    nf_conntrack module.
3
4    These are not required by the compatibility layer.
5 */
6
7 /* (C) 1999-2001 Paul `Rusty' Russell
8  * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
9  *
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.
13  *
14  * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
15  *      - generalize L3 protocol dependent part.
16  *
17  * Derived from net/ipv4/netfilter/ip_conntrack_standalone.c
18  */
19
20 #include <linux/types.h>
21 #include <linux/netfilter.h>
22 #include <linux/module.h>
23 #include <linux/skbuff.h>
24 #include <linux/proc_fs.h>
25 #include <linux/seq_file.h>
26 #include <linux/percpu.h>
27 #include <linux/netdevice.h>
28 #ifdef CONFIG_SYSCTL
29 #include <linux/sysctl.h>
30 #endif
31
32 #include <net/netfilter/nf_conntrack.h>
33 #include <net/netfilter/nf_conntrack_core.h>
34 #include <net/netfilter/nf_conntrack_l3proto.h>
35 #include <net/netfilter/nf_conntrack_l4proto.h>
36 #include <net/netfilter/nf_conntrack_expect.h>
37 #include <net/netfilter/nf_conntrack_helper.h>
38
39 #if 0
40 #define DEBUGP printk
41 #else
42 #define DEBUGP(format, args...)
43 #endif
44
45 MODULE_LICENSE("GPL");
46
47 #ifdef CONFIG_PROC_FS
48 int
49 print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
50             struct nf_conntrack_l3proto *l3proto,
51             struct nf_conntrack_l4proto *l4proto)
52 {
53         return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple);
54 }
55
56 #ifdef CONFIG_NF_CT_ACCT
57 static unsigned int
58 seq_print_counters(struct seq_file *s,
59                    const struct ip_conntrack_counter *counter)
60 {
61         return seq_printf(s, "packets=%llu bytes=%llu ",
62                           (unsigned long long)counter->packets,
63                           (unsigned long long)counter->bytes);
64 }
65 #else
66 #define seq_print_counters(x, y)        0
67 #endif
68
69 struct ct_iter_state {
70         unsigned int bucket;
71 };
72
73 static struct list_head *ct_get_first(struct seq_file *seq)
74 {
75         struct ct_iter_state *st = seq->private;
76
77         for (st->bucket = 0;
78              st->bucket < nf_conntrack_htable_size;
79              st->bucket++) {
80                 if (!list_empty(&nf_conntrack_hash[st->bucket]))
81                         return nf_conntrack_hash[st->bucket].next;
82         }
83         return NULL;
84 }
85
86 static struct list_head *ct_get_next(struct seq_file *seq, struct list_head *head)
87 {
88         struct ct_iter_state *st = seq->private;
89
90         head = head->next;
91         while (head == &nf_conntrack_hash[st->bucket]) {
92                 if (++st->bucket >= nf_conntrack_htable_size)
93                         return NULL;
94                 head = nf_conntrack_hash[st->bucket].next;
95         }
96         return head;
97 }
98
99 static struct list_head *ct_get_idx(struct seq_file *seq, loff_t pos)
100 {
101         struct list_head *head = ct_get_first(seq);
102
103         if (head)
104                 while (pos && (head = ct_get_next(seq, head)))
105                         pos--;
106         return pos ? NULL : head;
107 }
108
109 static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
110 {
111         read_lock_bh(&nf_conntrack_lock);
112         return ct_get_idx(seq, *pos);
113 }
114
115 static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
116 {
117         (*pos)++;
118         return ct_get_next(s, v);
119 }
120
121 static void ct_seq_stop(struct seq_file *s, void *v)
122 {
123         read_unlock_bh(&nf_conntrack_lock);
124 }
125
126 /* return 0 on success, 1 in case of error */
127 static int ct_seq_show(struct seq_file *s, void *v)
128 {
129         const struct nf_conntrack_tuple_hash *hash = v;
130         const struct nf_conn *conntrack = nf_ct_tuplehash_to_ctrack(hash);
131         struct nf_conntrack_l3proto *l3proto;
132         struct nf_conntrack_l4proto *l4proto;
133
134         NF_CT_ASSERT(conntrack);
135
136         /* we only want to print DIR_ORIGINAL */
137         if (NF_CT_DIRECTION(hash))
138                 return 0;
139
140         l3proto = __nf_ct_l3proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
141                                        .tuple.src.l3num);
142
143         NF_CT_ASSERT(l3proto);
144         l4proto = __nf_ct_l4proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
145                                    .tuple.src.l3num,
146                                    conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
147                                    .tuple.dst.protonum);
148         NF_CT_ASSERT(l4proto);
149
150         if (seq_printf(s, "%-8s %u %-8s %u %ld ",
151                        l3proto->name,
152                        conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num,
153                        l4proto->name,
154                        conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
155                        timer_pending(&conntrack->timeout)
156                        ? (long)(conntrack->timeout.expires - jiffies)/HZ : 0) != 0)
157                 return -ENOSPC;
158
159         if (l3proto->print_conntrack(s, conntrack))
160                 return -ENOSPC;
161
162         if (l4proto->print_conntrack(s, conntrack))
163                 return -ENOSPC;
164
165         if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
166                         l3proto, l4proto))
167                 return -ENOSPC;
168
169         if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL]))
170                 return -ENOSPC;
171
172         if (!(test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)))
173                 if (seq_printf(s, "[UNREPLIED] "))
174                         return -ENOSPC;
175
176         if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple,
177                         l3proto, l4proto))
178                 return -ENOSPC;
179
180         if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY]))
181                 return -ENOSPC;
182
183         if (test_bit(IPS_ASSURED_BIT, &conntrack->status))
184                 if (seq_printf(s, "[ASSURED] "))
185                         return -ENOSPC;
186
187 #if defined(CONFIG_NF_CONNTRACK_MARK)
188         if (seq_printf(s, "mark=%u ", conntrack->mark))
189                 return -ENOSPC;
190 #endif
191
192 #ifdef CONFIG_NF_CONNTRACK_SECMARK
193         if (seq_printf(s, "secmark=%u ", conntrack->secmark))
194                 return -ENOSPC;
195 #endif
196
197         if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
198                 return -ENOSPC;
199         
200         return 0;
201 }
202
203 static struct seq_operations ct_seq_ops = {
204         .start = ct_seq_start,
205         .next  = ct_seq_next,
206         .stop  = ct_seq_stop,
207         .show  = ct_seq_show
208 };
209
210 static int ct_open(struct inode *inode, struct file *file)
211 {
212         struct seq_file *seq;
213         struct ct_iter_state *st;
214         int ret;
215
216         st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
217         if (st == NULL)
218                 return -ENOMEM;
219         ret = seq_open(file, &ct_seq_ops);
220         if (ret)
221                 goto out_free;
222         seq          = file->private_data;
223         seq->private = st;
224         memset(st, 0, sizeof(struct ct_iter_state));
225         return ret;
226 out_free:
227         kfree(st);
228         return ret;
229 }
230
231 static struct file_operations ct_file_ops = {
232         .owner   = THIS_MODULE,
233         .open    = ct_open,
234         .read    = seq_read,
235         .llseek  = seq_lseek,
236         .release = seq_release_private,
237 };
238
239 static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
240 {
241         int cpu;
242
243         if (*pos == 0)
244                 return SEQ_START_TOKEN;
245
246         for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
247                 if (!cpu_possible(cpu))
248                         continue;
249                 *pos = cpu + 1;
250                 return &per_cpu(nf_conntrack_stat, cpu);
251         }
252
253         return NULL;
254 }
255
256 static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
257 {
258         int cpu;
259
260         for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
261                 if (!cpu_possible(cpu))
262                         continue;
263                 *pos = cpu + 1;
264                 return &per_cpu(nf_conntrack_stat, cpu);
265         }
266
267         return NULL;
268 }
269
270 static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
271 {
272 }
273
274 static int ct_cpu_seq_show(struct seq_file *seq, void *v)
275 {
276         unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
277         struct ip_conntrack_stat *st = v;
278
279         if (v == SEQ_START_TOKEN) {
280                 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");
281                 return 0;
282         }
283
284         seq_printf(seq, "%08x  %08x %08x %08x %08x %08x %08x %08x "
285                         "%08x %08x %08x %08x %08x  %08x %08x %08x \n",
286                    nr_conntracks,
287                    st->searched,
288                    st->found,
289                    st->new,
290                    st->invalid,
291                    st->ignore,
292                    st->delete,
293                    st->delete_list,
294                    st->insert,
295                    st->insert_failed,
296                    st->drop,
297                    st->early_drop,
298                    st->error,
299
300                    st->expect_new,
301                    st->expect_create,
302                    st->expect_delete
303                 );
304         return 0;
305 }
306
307 static struct seq_operations ct_cpu_seq_ops = {
308         .start  = ct_cpu_seq_start,
309         .next   = ct_cpu_seq_next,
310         .stop   = ct_cpu_seq_stop,
311         .show   = ct_cpu_seq_show,
312 };
313
314 static int ct_cpu_seq_open(struct inode *inode, struct file *file)
315 {
316         return seq_open(file, &ct_cpu_seq_ops);
317 }
318
319 static struct file_operations ct_cpu_seq_fops = {
320         .owner   = THIS_MODULE,
321         .open    = ct_cpu_seq_open,
322         .read    = seq_read,
323         .llseek  = seq_lseek,
324         .release = seq_release_private,
325 };
326 #endif /* CONFIG_PROC_FS */
327
328 /* Sysctl support */
329
330 int nf_conntrack_checksum __read_mostly = 1;
331
332 #ifdef CONFIG_SYSCTL
333
334 /* From nf_conntrack_proto_tcp.c */
335 extern unsigned int nf_ct_tcp_timeout_syn_sent;
336 extern unsigned int nf_ct_tcp_timeout_syn_recv;
337 extern unsigned int nf_ct_tcp_timeout_established;
338 extern unsigned int nf_ct_tcp_timeout_fin_wait;
339 extern unsigned int nf_ct_tcp_timeout_close_wait;
340 extern unsigned int nf_ct_tcp_timeout_last_ack;
341 extern unsigned int nf_ct_tcp_timeout_time_wait;
342 extern unsigned int nf_ct_tcp_timeout_close;
343 extern unsigned int nf_ct_tcp_timeout_max_retrans;
344 extern int nf_ct_tcp_loose;
345 extern int nf_ct_tcp_be_liberal;
346 extern int nf_ct_tcp_max_retrans;
347
348 /* From nf_conntrack_proto_udp.c */
349 extern unsigned int nf_ct_udp_timeout;
350 extern unsigned int nf_ct_udp_timeout_stream;
351
352 /* From nf_conntrack_proto_generic.c */
353 extern unsigned int nf_ct_generic_timeout;
354
355 /* Log invalid packets of a given protocol */
356 static int log_invalid_proto_min = 0;
357 static int log_invalid_proto_max = 255;
358
359 static struct ctl_table_header *nf_ct_sysctl_header;
360
361 static ctl_table nf_ct_sysctl_table[] = {
362         {
363                 .ctl_name       = NET_NF_CONNTRACK_MAX,
364                 .procname       = "nf_conntrack_max",
365                 .data           = &nf_conntrack_max,
366                 .maxlen         = sizeof(int),
367                 .mode           = 0644,
368                 .proc_handler   = &proc_dointvec,
369         },
370         {
371                 .ctl_name       = NET_NF_CONNTRACK_COUNT,
372                 .procname       = "nf_conntrack_count",
373                 .data           = &nf_conntrack_count,
374                 .maxlen         = sizeof(int),
375                 .mode           = 0444,
376                 .proc_handler   = &proc_dointvec,
377         },
378         {
379                 .ctl_name       = NET_NF_CONNTRACK_BUCKETS,
380                 .procname       = "nf_conntrack_buckets",
381                 .data           = &nf_conntrack_htable_size,
382                 .maxlen         = sizeof(unsigned int),
383                 .mode           = 0444,
384                 .proc_handler   = &proc_dointvec,
385         },
386         {
387                 .ctl_name       = NET_NF_CONNTRACK_CHECKSUM,
388                 .procname       = "nf_conntrack_checksum",
389                 .data           = &nf_conntrack_checksum,
390                 .maxlen         = sizeof(unsigned int),
391                 .mode           = 0644,
392                 .proc_handler   = &proc_dointvec,
393         },
394         {
395                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
396                 .procname       = "nf_conntrack_tcp_timeout_syn_sent",
397                 .data           = &nf_ct_tcp_timeout_syn_sent,
398                 .maxlen         = sizeof(unsigned int),
399                 .mode           = 0644,
400                 .proc_handler   = &proc_dointvec_jiffies,
401         },
402         {
403                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
404                 .procname       = "nf_conntrack_tcp_timeout_syn_recv",
405                 .data           = &nf_ct_tcp_timeout_syn_recv,
406                 .maxlen         = sizeof(unsigned int),
407                 .mode           = 0644,
408                 .proc_handler   = &proc_dointvec_jiffies,
409         },
410         {
411                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
412                 .procname       = "nf_conntrack_tcp_timeout_established",
413                 .data           = &nf_ct_tcp_timeout_established,
414                 .maxlen         = sizeof(unsigned int),
415                 .mode           = 0644,
416                 .proc_handler   = &proc_dointvec_jiffies,
417         },
418         {
419                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
420                 .procname       = "nf_conntrack_tcp_timeout_fin_wait",
421                 .data           = &nf_ct_tcp_timeout_fin_wait,
422                 .maxlen         = sizeof(unsigned int),
423                 .mode           = 0644,
424                 .proc_handler   = &proc_dointvec_jiffies,
425         },
426         {
427                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
428                 .procname       = "nf_conntrack_tcp_timeout_close_wait",
429                 .data           = &nf_ct_tcp_timeout_close_wait,
430                 .maxlen         = sizeof(unsigned int),
431                 .mode           = 0644,
432                 .proc_handler   = &proc_dointvec_jiffies,
433         },
434         {
435                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
436                 .procname       = "nf_conntrack_tcp_timeout_last_ack",
437                 .data           = &nf_ct_tcp_timeout_last_ack,
438                 .maxlen         = sizeof(unsigned int),
439                 .mode           = 0644,
440                 .proc_handler   = &proc_dointvec_jiffies,
441         },
442         {
443                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
444                 .procname       = "nf_conntrack_tcp_timeout_time_wait",
445                 .data           = &nf_ct_tcp_timeout_time_wait,
446                 .maxlen         = sizeof(unsigned int),
447                 .mode           = 0644,
448                 .proc_handler   = &proc_dointvec_jiffies,
449         },
450         {
451                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
452                 .procname       = "nf_conntrack_tcp_timeout_close",
453                 .data           = &nf_ct_tcp_timeout_close,
454                 .maxlen         = sizeof(unsigned int),
455                 .mode           = 0644,
456                 .proc_handler   = &proc_dointvec_jiffies,
457         },
458         {
459                 .ctl_name       = NET_NF_CONNTRACK_UDP_TIMEOUT,
460                 .procname       = "nf_conntrack_udp_timeout",
461                 .data           = &nf_ct_udp_timeout,
462                 .maxlen         = sizeof(unsigned int),
463                 .mode           = 0644,
464                 .proc_handler   = &proc_dointvec_jiffies,
465         },
466         {
467                 .ctl_name       = NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
468                 .procname       = "nf_conntrack_udp_timeout_stream",
469                 .data           = &nf_ct_udp_timeout_stream,
470                 .maxlen         = sizeof(unsigned int),
471                 .mode           = 0644,
472                 .proc_handler   = &proc_dointvec_jiffies,
473         },
474         {
475                 .ctl_name       = NET_NF_CONNTRACK_GENERIC_TIMEOUT,
476                 .procname       = "nf_conntrack_generic_timeout",
477                 .data           = &nf_ct_generic_timeout,
478                 .maxlen         = sizeof(unsigned int),
479                 .mode           = 0644,
480                 .proc_handler   = &proc_dointvec_jiffies,
481         },
482         {
483                 .ctl_name       = NET_NF_CONNTRACK_LOG_INVALID,
484                 .procname       = "nf_conntrack_log_invalid",
485                 .data           = &nf_ct_log_invalid,
486                 .maxlen         = sizeof(unsigned int),
487                 .mode           = 0644,
488                 .proc_handler   = &proc_dointvec_minmax,
489                 .strategy       = &sysctl_intvec,
490                 .extra1         = &log_invalid_proto_min,
491                 .extra2         = &log_invalid_proto_max,
492         },
493         {
494                 .ctl_name       = NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
495                 .procname       = "nf_conntrack_tcp_timeout_max_retrans",
496                 .data           = &nf_ct_tcp_timeout_max_retrans,
497                 .maxlen         = sizeof(unsigned int),
498                 .mode           = 0644,
499                 .proc_handler   = &proc_dointvec_jiffies,
500         },
501         {
502                 .ctl_name       = NET_NF_CONNTRACK_TCP_LOOSE,
503                 .procname       = "nf_conntrack_tcp_loose",
504                 .data           = &nf_ct_tcp_loose,
505                 .maxlen         = sizeof(unsigned int),
506                 .mode           = 0644,
507                 .proc_handler   = &proc_dointvec,
508         },
509         {
510                 .ctl_name       = NET_NF_CONNTRACK_TCP_BE_LIBERAL,
511                 .procname       = "nf_conntrack_tcp_be_liberal",
512                 .data           = &nf_ct_tcp_be_liberal,
513                 .maxlen         = sizeof(unsigned int),
514                 .mode           = 0644,
515                 .proc_handler   = &proc_dointvec,
516         },
517         {
518                 .ctl_name       = NET_NF_CONNTRACK_TCP_MAX_RETRANS,
519                 .procname       = "nf_conntrack_tcp_max_retrans",
520                 .data           = &nf_ct_tcp_max_retrans,
521                 .maxlen         = sizeof(unsigned int),
522                 .mode           = 0644,
523                 .proc_handler   = &proc_dointvec,
524         },
525
526         { .ctl_name = 0 }
527 };
528
529 #define NET_NF_CONNTRACK_MAX 2089
530
531 static ctl_table nf_ct_netfilter_table[] = {
532         {
533                 .ctl_name       = NET_NETFILTER,
534                 .procname       = "netfilter",
535                 .mode           = 0555,
536                 .child          = nf_ct_sysctl_table,
537         },
538         {
539                 .ctl_name       = NET_NF_CONNTRACK_MAX,
540                 .procname       = "nf_conntrack_max",
541                 .data           = &nf_conntrack_max,
542                 .maxlen         = sizeof(int),
543                 .mode           = 0644,
544                 .proc_handler   = &proc_dointvec,
545         },
546         { .ctl_name = 0 }
547 };
548
549 static ctl_table nf_ct_net_table[] = {
550         {
551                 .ctl_name       = CTL_NET,
552                 .procname       = "net",
553                 .mode           = 0555,
554                 .child          = nf_ct_netfilter_table,
555         },
556         { .ctl_name = 0 }
557 };
558 EXPORT_SYMBOL(nf_ct_log_invalid);
559 #endif /* CONFIG_SYSCTL */
560
561 static int __init nf_conntrack_standalone_init(void)
562 {
563 #ifdef CONFIG_PROC_FS
564         struct proc_dir_entry *proc, *proc_exp, *proc_stat;
565 #endif
566         int ret = 0;
567
568         ret = nf_conntrack_init();
569         if (ret < 0)
570                 return ret;
571
572 #ifdef CONFIG_PROC_FS
573         proc = proc_net_fops_create("nf_conntrack", 0440, &ct_file_ops);
574         if (!proc) goto cleanup_init;
575
576         proc_exp = proc_net_fops_create("nf_conntrack_expect", 0440,
577                                         &exp_file_ops);
578         if (!proc_exp) goto cleanup_proc;
579
580         proc_stat = create_proc_entry("nf_conntrack", S_IRUGO, proc_net_stat);
581         if (!proc_stat)
582                 goto cleanup_proc_exp;
583
584         proc_stat->proc_fops = &ct_cpu_seq_fops;
585         proc_stat->owner = THIS_MODULE;
586 #endif
587 #ifdef CONFIG_SYSCTL
588         nf_ct_sysctl_header = register_sysctl_table(nf_ct_net_table, 0);
589         if (nf_ct_sysctl_header == NULL) {
590                 printk("nf_conntrack: can't register to sysctl.\n");
591                 ret = -ENOMEM;
592                 goto cleanup_proc_stat;
593         }
594 #endif
595         return ret;
596
597 #ifdef CONFIG_SYSCTL
598  cleanup_proc_stat:
599 #endif
600 #ifdef CONFIG_PROC_FS
601         remove_proc_entry("nf_conntrack", proc_net_stat);
602  cleanup_proc_exp:
603         proc_net_remove("nf_conntrack_expect");
604  cleanup_proc:
605         proc_net_remove("nf_conntrack");
606  cleanup_init:
607 #endif /* CNFIG_PROC_FS */
608         nf_conntrack_cleanup();
609         return ret;
610 }
611
612 static void __exit nf_conntrack_standalone_fini(void)
613 {
614 #ifdef CONFIG_SYSCTL
615         unregister_sysctl_table(nf_ct_sysctl_header);
616 #endif
617 #ifdef CONFIG_PROC_FS
618         remove_proc_entry("nf_conntrack", proc_net_stat);
619         proc_net_remove("nf_conntrack_expect");
620         proc_net_remove("nf_conntrack");
621 #endif /* CNFIG_PROC_FS */
622         nf_conntrack_cleanup();
623 }
624
625 module_init(nf_conntrack_standalone_init);
626 module_exit(nf_conntrack_standalone_fini);
627
628 /* Some modules need us, but don't depend directly on any symbol.
629    They should call this. */
630 void need_conntrack(void)
631 {
632 }
633
634 #ifdef CONFIG_NF_CONNTRACK_EVENTS
635 EXPORT_SYMBOL_GPL(nf_conntrack_chain);
636 EXPORT_SYMBOL_GPL(nf_conntrack_expect_chain);
637 EXPORT_SYMBOL_GPL(nf_conntrack_register_notifier);
638 EXPORT_SYMBOL_GPL(nf_conntrack_unregister_notifier);
639 EXPORT_SYMBOL_GPL(__nf_ct_event_cache_init);
640 EXPORT_PER_CPU_SYMBOL_GPL(nf_conntrack_ecache);
641 EXPORT_SYMBOL_GPL(nf_ct_deliver_cached_events);
642 #endif
643 EXPORT_SYMBOL(nf_ct_l3proto_try_module_get);
644 EXPORT_SYMBOL(nf_ct_l3proto_module_put);
645 EXPORT_SYMBOL(nf_conntrack_l3proto_register);
646 EXPORT_SYMBOL(nf_conntrack_l3proto_unregister);
647 EXPORT_SYMBOL(nf_conntrack_l4proto_register);
648 EXPORT_SYMBOL(nf_conntrack_l4proto_unregister);
649 EXPORT_SYMBOL(nf_ct_invert_tuplepr);
650 EXPORT_SYMBOL(nf_conntrack_destroyed);
651 EXPORT_SYMBOL(need_conntrack);
652 EXPORT_SYMBOL(nf_conntrack_helper_register);
653 EXPORT_SYMBOL(nf_conntrack_helper_unregister);
654 EXPORT_SYMBOL(nf_ct_iterate_cleanup);
655 EXPORT_SYMBOL(__nf_ct_refresh_acct);
656 EXPORT_SYMBOL(nf_ct_protos);
657 EXPORT_SYMBOL(__nf_ct_l4proto_find);
658 EXPORT_SYMBOL(nf_ct_l4proto_find_get);
659 EXPORT_SYMBOL(nf_ct_l4proto_put);
660 EXPORT_SYMBOL(nf_ct_l3proto_find_get);
661 EXPORT_SYMBOL(nf_ct_l3proto_put);
662 EXPORT_SYMBOL(nf_ct_l3protos);
663 EXPORT_SYMBOL_GPL(nf_conntrack_checksum);
664 EXPORT_SYMBOL(nf_conntrack_expect_alloc);
665 EXPORT_SYMBOL(nf_conntrack_expect_put);
666 EXPORT_SYMBOL(nf_conntrack_expect_related);
667 EXPORT_SYMBOL(nf_conntrack_unexpect_related);
668 EXPORT_SYMBOL(nf_conntrack_tuple_taken);
669 EXPORT_SYMBOL(nf_conntrack_htable_size);
670 EXPORT_SYMBOL(nf_conntrack_lock);
671 EXPORT_SYMBOL(nf_conntrack_hash);
672 EXPORT_SYMBOL(nf_conntrack_untracked);
673 EXPORT_SYMBOL_GPL(nf_conntrack_find_get);
674 #ifdef CONFIG_IP_NF_NAT_NEEDED
675 EXPORT_SYMBOL(nf_conntrack_tcp_update);
676 #endif
677 EXPORT_SYMBOL(__nf_conntrack_confirm);
678 EXPORT_SYMBOL(nf_ct_get_tuple);
679 EXPORT_SYMBOL(nf_ct_invert_tuple);
680 EXPORT_SYMBOL(nf_conntrack_in);
681 EXPORT_SYMBOL(__nf_conntrack_attach);
682 EXPORT_SYMBOL(nf_conntrack_alloc);
683 EXPORT_SYMBOL(nf_conntrack_free);
684 EXPORT_SYMBOL(nf_conntrack_flush);
685 EXPORT_SYMBOL(nf_ct_remove_expectations);
686 EXPORT_SYMBOL(nf_ct_helper_find_get);
687 EXPORT_SYMBOL(nf_ct_helper_put);
688 EXPORT_SYMBOL(__nf_conntrack_helper_find_byname);
689 EXPORT_SYMBOL(__nf_conntrack_find);
690 EXPORT_SYMBOL(nf_ct_unlink_expect);
691 EXPORT_SYMBOL(nf_conntrack_hash_insert);
692 EXPORT_SYMBOL(__nf_conntrack_expect_find);
693 EXPORT_SYMBOL(nf_conntrack_expect_find);
694 EXPORT_SYMBOL(nf_conntrack_expect_list);
695 #if defined(CONFIG_NF_CT_NETLINK) || \
696     defined(CONFIG_NF_CT_NETLINK_MODULE)
697 EXPORT_SYMBOL(nf_ct_port_tuple_to_nfattr);
698 EXPORT_SYMBOL(nf_ct_port_nfattr_to_tuple);
699 #endif