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 <linux/security.h>
15 #include <net/net_namespace.h>
17 #include <linux/netfilter.h>
18 #include <net/netfilter/nf_conntrack_core.h>
19 #include <net/netfilter/nf_conntrack_l3proto.h>
20 #include <net/netfilter/nf_conntrack_l4proto.h>
21 #include <net/netfilter/nf_conntrack_expect.h>
22 #include <net/netfilter/nf_conntrack_acct.h>
23 #include <linux/rculist_nulls.h>
25 struct ct_iter_state
{
26 struct seq_net_private p
;
30 static struct hlist_nulls_node
*ct_get_first(struct seq_file
*seq
)
32 struct net
*net
= seq_file_net(seq
);
33 struct ct_iter_state
*st
= seq
->private;
34 struct hlist_nulls_node
*n
;
37 st
->bucket
< net
->ct
.htable_size
;
40 hlist_nulls_first_rcu(&net
->ct
.hash
[st
->bucket
]));
47 static struct hlist_nulls_node
*ct_get_next(struct seq_file
*seq
,
48 struct hlist_nulls_node
*head
)
50 struct net
*net
= seq_file_net(seq
);
51 struct ct_iter_state
*st
= seq
->private;
53 head
= rcu_dereference(hlist_nulls_next_rcu(head
));
54 while (is_a_nulls(head
)) {
55 if (likely(get_nulls_value(head
) == st
->bucket
)) {
56 if (++st
->bucket
>= net
->ct
.htable_size
)
59 head
= rcu_dereference(
60 hlist_nulls_first_rcu(&net
->ct
.hash
[st
->bucket
]));
65 static struct hlist_nulls_node
*ct_get_idx(struct seq_file
*seq
, loff_t pos
)
67 struct hlist_nulls_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
)
79 return ct_get_idx(seq
, *pos
);
82 static void *ct_seq_next(struct seq_file
*s
, void *v
, loff_t
*pos
)
85 return ct_get_next(s
, v
);
88 static void ct_seq_stop(struct seq_file
*s
, void *v
)
94 #ifdef CONFIG_NF_CONNTRACK_SECMARK
95 static int ct_show_secctx(struct seq_file
*s
, const struct nf_conn
*ct
)
101 ret
= security_secid_to_secctx(ct
->secmark
, &secctx
, &len
);
105 ret
= seq_printf(s
, "secctx=%s ", secctx
);
107 security_release_secctx(secctx
, len
);
111 static inline int ct_show_secctx(struct seq_file
*s
, const struct nf_conn
*ct
)
117 static int ct_seq_show(struct seq_file
*s
, void *v
)
119 struct nf_conntrack_tuple_hash
*hash
= v
;
120 struct nf_conn
*ct
= nf_ct_tuplehash_to_ctrack(hash
);
121 const struct nf_conntrack_l3proto
*l3proto
;
122 const struct nf_conntrack_l4proto
*l4proto
;
126 if (unlikely(!atomic_inc_not_zero(&ct
->ct_general
.use
)))
130 /* we only want to print DIR_ORIGINAL */
131 if (NF_CT_DIRECTION(hash
))
133 if (nf_ct_l3num(ct
) != AF_INET
)
136 l3proto
= __nf_ct_l3proto_find(nf_ct_l3num(ct
));
137 NF_CT_ASSERT(l3proto
);
138 l4proto
= __nf_ct_l4proto_find(nf_ct_l3num(ct
), nf_ct_protonum(ct
));
139 NF_CT_ASSERT(l4proto
);
142 if (seq_printf(s
, "%-8s %u %ld ",
143 l4proto
->name
, nf_ct_protonum(ct
),
144 timer_pending(&ct
->timeout
)
145 ? (long)(ct
->timeout
.expires
- jiffies
)/HZ
: 0) != 0)
148 if (l4proto
->print_conntrack
&& l4proto
->print_conntrack(s
, ct
))
151 if (print_tuple(s
, &ct
->tuplehash
[IP_CT_DIR_ORIGINAL
].tuple
,
155 if (seq_print_acct(s
, ct
, IP_CT_DIR_ORIGINAL
))
158 if (!(test_bit(IPS_SEEN_REPLY_BIT
, &ct
->status
)))
159 if (seq_printf(s
, "[UNREPLIED] "))
162 if (print_tuple(s
, &ct
->tuplehash
[IP_CT_DIR_REPLY
].tuple
,
166 if (seq_print_acct(s
, ct
, IP_CT_DIR_REPLY
))
169 if (test_bit(IPS_ASSURED_BIT
, &ct
->status
))
170 if (seq_printf(s
, "[ASSURED] "))
173 #ifdef CONFIG_NF_CONNTRACK_MARK
174 if (seq_printf(s
, "mark=%u ", ct
->mark
))
178 if (ct_show_secctx(s
, ct
))
181 if (seq_printf(s
, "use=%u\n", atomic_read(&ct
->ct_general
.use
)))
189 static const struct seq_operations ct_seq_ops
= {
190 .start
= ct_seq_start
,
196 static int ct_open(struct inode
*inode
, struct file
*file
)
198 return seq_open_net(inode
, file
, &ct_seq_ops
,
199 sizeof(struct ct_iter_state
));
202 static const struct file_operations ct_file_ops
= {
203 .owner
= THIS_MODULE
,
207 .release
= seq_release_net
,
211 struct ct_expect_iter_state
{
212 struct seq_net_private p
;
216 static struct hlist_node
*ct_expect_get_first(struct seq_file
*seq
)
218 struct net
*net
= seq_file_net(seq
);
219 struct ct_expect_iter_state
*st
= seq
->private;
220 struct hlist_node
*n
;
222 for (st
->bucket
= 0; st
->bucket
< nf_ct_expect_hsize
; st
->bucket
++) {
224 hlist_first_rcu(&net
->ct
.expect_hash
[st
->bucket
]));
231 static struct hlist_node
*ct_expect_get_next(struct seq_file
*seq
,
232 struct hlist_node
*head
)
234 struct net
*net
= seq_file_net(seq
);
235 struct ct_expect_iter_state
*st
= seq
->private;
237 head
= rcu_dereference(hlist_next_rcu(head
));
238 while (head
== NULL
) {
239 if (++st
->bucket
>= nf_ct_expect_hsize
)
241 head
= rcu_dereference(
242 hlist_first_rcu(&net
->ct
.expect_hash
[st
->bucket
]));
247 static struct hlist_node
*ct_expect_get_idx(struct seq_file
*seq
, loff_t pos
)
249 struct hlist_node
*head
= ct_expect_get_first(seq
);
252 while (pos
&& (head
= ct_expect_get_next(seq
, head
)))
254 return pos
? NULL
: head
;
257 static void *exp_seq_start(struct seq_file
*seq
, loff_t
*pos
)
261 return ct_expect_get_idx(seq
, *pos
);
264 static void *exp_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
267 return ct_expect_get_next(seq
, v
);
270 static void exp_seq_stop(struct seq_file
*seq
, void *v
)
276 static int exp_seq_show(struct seq_file
*s
, void *v
)
278 struct nf_conntrack_expect
*exp
;
279 const struct hlist_node
*n
= v
;
281 exp
= hlist_entry(n
, struct nf_conntrack_expect
, hnode
);
283 if (exp
->tuple
.src
.l3num
!= AF_INET
)
286 if (exp
->timeout
.function
)
287 seq_printf(s
, "%ld ", timer_pending(&exp
->timeout
)
288 ? (long)(exp
->timeout
.expires
- jiffies
)/HZ
: 0);
292 seq_printf(s
, "proto=%u ", exp
->tuple
.dst
.protonum
);
294 print_tuple(s
, &exp
->tuple
,
295 __nf_ct_l3proto_find(exp
->tuple
.src
.l3num
),
296 __nf_ct_l4proto_find(exp
->tuple
.src
.l3num
,
297 exp
->tuple
.dst
.protonum
));
298 return seq_putc(s
, '\n');
301 static const struct seq_operations exp_seq_ops
= {
302 .start
= exp_seq_start
,
303 .next
= exp_seq_next
,
304 .stop
= exp_seq_stop
,
308 static int exp_open(struct inode
*inode
, struct file
*file
)
310 return seq_open_net(inode
, file
, &exp_seq_ops
,
311 sizeof(struct ct_expect_iter_state
));
314 static const struct file_operations ip_exp_file_ops
= {
315 .owner
= THIS_MODULE
,
319 .release
= seq_release_net
,
322 static void *ct_cpu_seq_start(struct seq_file
*seq
, loff_t
*pos
)
324 struct net
*net
= seq_file_net(seq
);
328 return SEQ_START_TOKEN
;
330 for (cpu
= *pos
-1; cpu
< nr_cpu_ids
; ++cpu
) {
331 if (!cpu_possible(cpu
))
334 return per_cpu_ptr(net
->ct
.stat
, cpu
);
340 static void *ct_cpu_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
342 struct net
*net
= seq_file_net(seq
);
345 for (cpu
= *pos
; cpu
< nr_cpu_ids
; ++cpu
) {
346 if (!cpu_possible(cpu
))
349 return per_cpu_ptr(net
->ct
.stat
, cpu
);
355 static void ct_cpu_seq_stop(struct seq_file
*seq
, void *v
)
359 static int ct_cpu_seq_show(struct seq_file
*seq
, void *v
)
361 struct net
*net
= seq_file_net(seq
);
362 unsigned int nr_conntracks
= atomic_read(&net
->ct
.count
);
363 const struct ip_conntrack_stat
*st
= v
;
365 if (v
== SEQ_START_TOKEN
) {
366 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 search_restart\n");
370 seq_printf(seq
, "%08x %08x %08x %08x %08x %08x %08x %08x "
371 "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
394 static const struct seq_operations ct_cpu_seq_ops
= {
395 .start
= ct_cpu_seq_start
,
396 .next
= ct_cpu_seq_next
,
397 .stop
= ct_cpu_seq_stop
,
398 .show
= ct_cpu_seq_show
,
401 static int ct_cpu_seq_open(struct inode
*inode
, struct file
*file
)
403 return seq_open_net(inode
, file
, &ct_cpu_seq_ops
,
404 sizeof(struct seq_net_private
));
407 static const struct file_operations ct_cpu_seq_fops
= {
408 .owner
= THIS_MODULE
,
409 .open
= ct_cpu_seq_open
,
412 .release
= seq_release_net
,
415 static int __net_init
ip_conntrack_net_init(struct net
*net
)
417 struct proc_dir_entry
*proc
, *proc_exp
, *proc_stat
;
419 proc
= proc_net_fops_create(net
, "ip_conntrack", 0440, &ct_file_ops
);
423 proc_exp
= proc_net_fops_create(net
, "ip_conntrack_expect", 0440,
428 proc_stat
= proc_create("ip_conntrack", S_IRUGO
,
429 net
->proc_net_stat
, &ct_cpu_seq_fops
);
435 proc_net_remove(net
, "ip_conntrack_expect");
437 proc_net_remove(net
, "ip_conntrack");
442 static void __net_exit
ip_conntrack_net_exit(struct net
*net
)
444 remove_proc_entry("ip_conntrack", net
->proc_net_stat
);
445 proc_net_remove(net
, "ip_conntrack_expect");
446 proc_net_remove(net
, "ip_conntrack");
449 static struct pernet_operations ip_conntrack_net_ops
= {
450 .init
= ip_conntrack_net_init
,
451 .exit
= ip_conntrack_net_exit
,
454 int __init
nf_conntrack_ipv4_compat_init(void)
456 return register_pernet_subsys(&ip_conntrack_net_ops
);
459 void __exit
nf_conntrack_ipv4_compat_fini(void)
461 unregister_pernet_subsys(&ip_conntrack_net_ops
);