1 /* ip_conntrack proc compat - based on ip_conntrack_standalone.c
3 * (C) 1999-2001 Paul `Rusty' Russell
4 * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #include <linux/types.h>
11 #include <linux/proc_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/percpu.h>
14 #include <net/net_namespace.h>
16 #include <linux/netfilter.h>
17 #include <net/netfilter/nf_conntrack_core.h>
18 #include <net/netfilter/nf_conntrack_l3proto.h>
19 #include <net/netfilter/nf_conntrack_l4proto.h>
20 #include <net/netfilter/nf_conntrack_expect.h>
22 #ifdef CONFIG_NF_CT_ACCT
24 seq_print_counters(struct seq_file *s,
25 const struct ip_conntrack_counter *counter)
27 return seq_printf(s, "packets=%llu bytes=%llu ",
28 (unsigned long long)counter->packets,
29 (unsigned long long)counter->bytes);
32 #define seq_print_counters(x, y) 0
35 struct ct_iter_state {
39 static struct hlist_node *ct_get_first(struct seq_file *seq)
41 struct ct_iter_state *st = seq->private;
45 st->bucket < nf_conntrack_htable_size;
47 n = rcu_dereference(nf_conntrack_hash[st->bucket].first);
54 static struct hlist_node *ct_get_next(struct seq_file *seq,
55 struct hlist_node *head)
57 struct ct_iter_state *st = seq->private;
59 head = rcu_dereference(head->next);
60 while (head == NULL) {
61 if (++st->bucket >= nf_conntrack_htable_size)
63 head = rcu_dereference(nf_conntrack_hash[st->bucket].first);
68 static struct hlist_node *ct_get_idx(struct seq_file *seq, loff_t pos)
70 struct hlist_node *head = ct_get_first(seq);
73 while (pos && (head = ct_get_next(seq, head)))
75 return pos ? NULL : head;
78 static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
82 return ct_get_idx(seq, *pos);
85 static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
88 return ct_get_next(s, v);
91 static void ct_seq_stop(struct seq_file *s, void *v)
97 static int ct_seq_show(struct seq_file *s, void *v)
99 const struct nf_conntrack_tuple_hash *hash = v;
100 const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
101 struct nf_conntrack_l3proto *l3proto;
102 struct nf_conntrack_l4proto *l4proto;
106 /* we only want to print DIR_ORIGINAL */
107 if (NF_CT_DIRECTION(hash))
109 if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num != AF_INET)
112 l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
114 NF_CT_ASSERT(l3proto);
115 l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
117 ct->tuplehash[IP_CT_DIR_ORIGINAL]
118 .tuple.dst.protonum);
119 NF_CT_ASSERT(l4proto);
121 if (seq_printf(s, "%-8s %u %ld ",
123 ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
124 timer_pending(&ct->timeout)
125 ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
128 if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
131 if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
135 if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
138 if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
139 if (seq_printf(s, "[UNREPLIED] "))
142 if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
146 if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
149 if (test_bit(IPS_ASSURED_BIT, &ct->status))
150 if (seq_printf(s, "[ASSURED] "))
153 #ifdef CONFIG_NF_CONNTRACK_MARK
154 if (seq_printf(s, "mark=%u ", ct->mark))
158 #ifdef CONFIG_NF_CONNTRACK_SECMARK
159 if (seq_printf(s, "secmark=%u ", ct->secmark))
163 if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
169 static const struct seq_operations ct_seq_ops = {
170 .start = ct_seq_start,
176 static int ct_open(struct inode *inode, struct file *file)
178 return seq_open_private(file, &ct_seq_ops,
179 sizeof(struct ct_iter_state));
182 static const struct file_operations ct_file_ops = {
183 .owner = THIS_MODULE,
187 .release = seq_release_private,
191 struct ct_expect_iter_state {
195 static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
197 struct ct_expect_iter_state *st = seq->private;
198 struct hlist_node *n;
200 for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
201 n = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
208 static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
209 struct hlist_node *head)
211 struct ct_expect_iter_state *st = seq->private;
213 head = rcu_dereference(head->next);
214 while (head == NULL) {
215 if (++st->bucket >= nf_ct_expect_hsize)
217 head = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
222 static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos)
224 struct hlist_node *head = ct_expect_get_first(seq);
227 while (pos && (head = ct_expect_get_next(seq, head)))
229 return pos ? NULL : head;
232 static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
236 return ct_expect_get_idx(seq, *pos);
239 static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
242 return ct_expect_get_next(seq, v);
245 static void exp_seq_stop(struct seq_file *seq, void *v)
251 static int exp_seq_show(struct seq_file *s, void *v)
253 struct nf_conntrack_expect *exp;
254 struct hlist_node *n = v;
256 exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
258 if (exp->tuple.src.l3num != AF_INET)
261 if (exp->timeout.function)
262 seq_printf(s, "%ld ", timer_pending(&exp->timeout)
263 ? (long)(exp->timeout.expires - jiffies)/HZ : 0);
267 seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
269 print_tuple(s, &exp->tuple,
270 __nf_ct_l3proto_find(exp->tuple.src.l3num),
271 __nf_ct_l4proto_find(exp->tuple.src.l3num,
272 exp->tuple.dst.protonum));
273 return seq_putc(s, '\n');
276 static const struct seq_operations exp_seq_ops = {
277 .start = exp_seq_start,
278 .next = exp_seq_next,
279 .stop = exp_seq_stop,
283 static int exp_open(struct inode *inode, struct file *file)
285 return seq_open_private(file, &exp_seq_ops,
286 sizeof(struct ct_expect_iter_state));
289 static const struct file_operations ip_exp_file_ops = {
290 .owner = THIS_MODULE,
294 .release = seq_release_private,
297 static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
302 return SEQ_START_TOKEN;
304 for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
305 if (!cpu_possible(cpu))
308 return &per_cpu(nf_conntrack_stat, cpu);
314 static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
318 for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
319 if (!cpu_possible(cpu))
322 return &per_cpu(nf_conntrack_stat, cpu);
328 static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
332 static int ct_cpu_seq_show(struct seq_file *seq, void *v)
334 unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
335 struct ip_conntrack_stat *st = v;
337 if (v == SEQ_START_TOKEN) {
338 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");
342 seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
343 "%08x %08x %08x %08x %08x %08x %08x %08x \n",
365 static const struct seq_operations ct_cpu_seq_ops = {
366 .start = ct_cpu_seq_start,
367 .next = ct_cpu_seq_next,
368 .stop = ct_cpu_seq_stop,
369 .show = ct_cpu_seq_show,
372 static int ct_cpu_seq_open(struct inode *inode, struct file *file)
374 return seq_open(file, &ct_cpu_seq_ops);
377 static const struct file_operations ct_cpu_seq_fops = {
378 .owner = THIS_MODULE,
379 .open = ct_cpu_seq_open,
382 .release = seq_release_private,
385 int __init nf_conntrack_ipv4_compat_init(void)
387 struct proc_dir_entry *proc, *proc_exp, *proc_stat;
389 proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops);
393 proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440,
398 proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, init_net.proc_net_stat);
402 proc_stat->proc_fops = &ct_cpu_seq_fops;
403 proc_stat->owner = THIS_MODULE;
408 proc_net_remove(&init_net, "ip_conntrack_expect");
410 proc_net_remove(&init_net, "ip_conntrack");
415 void __exit nf_conntrack_ipv4_compat_fini(void)
417 remove_proc_entry("ip_conntrack", init_net.proc_net_stat);
418 proc_net_remove(&init_net, "ip_conntrack_expect");
419 proc_net_remove(&init_net, "ip_conntrack");