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>
15 #include <linux/netfilter.h>
16 #include <net/netfilter/nf_conntrack_core.h>
17 #include <net/netfilter/nf_conntrack_l3proto.h>
18 #include <net/netfilter/nf_conntrack_l4proto.h>
19 #include <net/netfilter/nf_conntrack_expect.h>
21 #ifdef CONFIG_NF_CT_ACCT
23 seq_print_counters(struct seq_file *s,
24 const struct ip_conntrack_counter *counter)
26 return seq_printf(s, "packets=%llu bytes=%llu ",
27 (unsigned long long)counter->packets,
28 (unsigned long long)counter->bytes);
31 #define seq_print_counters(x, y) 0
34 struct ct_iter_state {
38 static struct hlist_node *ct_get_first(struct seq_file *seq)
40 struct ct_iter_state *st = seq->private;
43 st->bucket < nf_conntrack_htable_size;
45 if (!hlist_empty(&nf_conntrack_hash[st->bucket]))
46 return nf_conntrack_hash[st->bucket].first;
51 static struct hlist_node *ct_get_next(struct seq_file *seq,
52 struct hlist_node *head)
54 struct ct_iter_state *st = seq->private;
57 while (head == NULL) {
58 if (++st->bucket >= nf_conntrack_htable_size)
60 head = nf_conntrack_hash[st->bucket].first;
65 static struct hlist_node *ct_get_idx(struct seq_file *seq, loff_t pos)
67 struct hlist_node *head = ct_get_first(seq);
70 while (pos && (head = ct_get_next(seq, head)))
72 return pos ? NULL : head;
75 static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
77 read_lock_bh(&nf_conntrack_lock);
78 return ct_get_idx(seq, *pos);
81 static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
84 return ct_get_next(s, v);
87 static void ct_seq_stop(struct seq_file *s, void *v)
89 read_unlock_bh(&nf_conntrack_lock);
92 static int ct_seq_show(struct seq_file *s, void *v)
94 const struct nf_conntrack_tuple_hash *hash = v;
95 const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
96 struct nf_conntrack_l3proto *l3proto;
97 struct nf_conntrack_l4proto *l4proto;
101 /* we only want to print DIR_ORIGINAL */
102 if (NF_CT_DIRECTION(hash))
104 if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num != AF_INET)
107 l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
109 NF_CT_ASSERT(l3proto);
110 l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
112 ct->tuplehash[IP_CT_DIR_ORIGINAL]
113 .tuple.dst.protonum);
114 NF_CT_ASSERT(l4proto);
116 if (seq_printf(s, "%-8s %u %ld ",
118 ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
119 timer_pending(&ct->timeout)
120 ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
123 if (l3proto->print_conntrack(s, ct))
126 if (l4proto->print_conntrack(s, ct))
129 if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
133 if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
136 if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
137 if (seq_printf(s, "[UNREPLIED] "))
140 if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
144 if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
147 if (test_bit(IPS_ASSURED_BIT, &ct->status))
148 if (seq_printf(s, "[ASSURED] "))
151 #ifdef CONFIG_NF_CONNTRACK_MARK
152 if (seq_printf(s, "mark=%u ", ct->mark))
156 #ifdef CONFIG_NF_CONNTRACK_SECMARK
157 if (seq_printf(s, "secmark=%u ", ct->secmark))
161 if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
167 static const struct seq_operations ct_seq_ops = {
168 .start = ct_seq_start,
174 static int ct_open(struct inode *inode, struct file *file)
176 struct seq_file *seq;
177 struct ct_iter_state *st;
180 st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
183 ret = seq_open(file, &ct_seq_ops);
186 seq = file->private_data;
194 static const struct file_operations ct_file_ops = {
195 .owner = THIS_MODULE,
199 .release = seq_release_private,
203 struct ct_expect_iter_state {
207 static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
209 struct ct_expect_iter_state *st = seq->private;
211 for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
212 if (!hlist_empty(&nf_ct_expect_hash[st->bucket]))
213 return nf_ct_expect_hash[st->bucket].first;
218 static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
219 struct hlist_node *head)
221 struct ct_expect_iter_state *st = seq->private;
224 while (head == NULL) {
225 if (++st->bucket >= nf_ct_expect_hsize)
227 head = nf_ct_expect_hash[st->bucket].first;
232 static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos)
234 struct hlist_node *head = ct_expect_get_first(seq);
237 while (pos && (head = ct_expect_get_next(seq, head)))
239 return pos ? NULL : head;
242 static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
244 read_lock_bh(&nf_conntrack_lock);
245 return ct_expect_get_idx(seq, *pos);
248 static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
251 return ct_expect_get_next(seq, v);
254 static void exp_seq_stop(struct seq_file *seq, void *v)
256 read_unlock_bh(&nf_conntrack_lock);
259 static int exp_seq_show(struct seq_file *s, void *v)
261 struct nf_conntrack_expect *exp;
262 struct hlist_node *n = v;
264 exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
266 if (exp->tuple.src.l3num != AF_INET)
269 if (exp->timeout.function)
270 seq_printf(s, "%ld ", timer_pending(&exp->timeout)
271 ? (long)(exp->timeout.expires - jiffies)/HZ : 0);
275 seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
277 print_tuple(s, &exp->tuple,
278 __nf_ct_l3proto_find(exp->tuple.src.l3num),
279 __nf_ct_l4proto_find(exp->tuple.src.l3num,
280 exp->tuple.dst.protonum));
281 return seq_putc(s, '\n');
284 static const struct seq_operations exp_seq_ops = {
285 .start = exp_seq_start,
286 .next = exp_seq_next,
287 .stop = exp_seq_stop,
291 static int exp_open(struct inode *inode, struct file *file)
293 struct seq_file *seq;
294 struct ct_expect_iter_state *st;
297 st = kmalloc(sizeof(struct ct_expect_iter_state), GFP_KERNEL);
300 ret = seq_open(file, &exp_seq_ops);
303 seq = file->private_data;
305 memset(st, 0, sizeof(struct ct_expect_iter_state));
312 static const struct file_operations ip_exp_file_ops = {
313 .owner = THIS_MODULE,
317 .release = seq_release_private,
320 static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
325 return SEQ_START_TOKEN;
327 for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
328 if (!cpu_possible(cpu))
331 return &per_cpu(nf_conntrack_stat, cpu);
337 static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
341 for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
342 if (!cpu_possible(cpu))
345 return &per_cpu(nf_conntrack_stat, cpu);
351 static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
355 static int ct_cpu_seq_show(struct seq_file *seq, void *v)
357 unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
358 struct ip_conntrack_stat *st = v;
360 if (v == SEQ_START_TOKEN) {
361 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");
365 seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
366 "%08x %08x %08x %08x %08x %08x %08x %08x \n",
388 static const struct seq_operations ct_cpu_seq_ops = {
389 .start = ct_cpu_seq_start,
390 .next = ct_cpu_seq_next,
391 .stop = ct_cpu_seq_stop,
392 .show = ct_cpu_seq_show,
395 static int ct_cpu_seq_open(struct inode *inode, struct file *file)
397 return seq_open(file, &ct_cpu_seq_ops);
400 static const struct file_operations ct_cpu_seq_fops = {
401 .owner = THIS_MODULE,
402 .open = ct_cpu_seq_open,
405 .release = seq_release_private,
408 int __init nf_conntrack_ipv4_compat_init(void)
410 struct proc_dir_entry *proc, *proc_exp, *proc_stat;
412 proc = proc_net_fops_create("ip_conntrack", 0440, &ct_file_ops);
416 proc_exp = proc_net_fops_create("ip_conntrack_expect", 0440,
421 proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, proc_net_stat);
425 proc_stat->proc_fops = &ct_cpu_seq_fops;
426 proc_stat->owner = THIS_MODULE;
431 proc_net_remove("ip_conntrack_expect");
433 proc_net_remove("ip_conntrack");
438 void __exit nf_conntrack_ipv4_compat_fini(void)
440 remove_proc_entry("ip_conntrack", proc_net_stat);
441 proc_net_remove("ip_conntrack_expect");
442 proc_net_remove("ip_conntrack");