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>
24 #include <linux/export.h>
26 struct ct_iter_state
{
27 struct seq_net_private p
;
31 static struct hlist_nulls_node
*ct_get_first(struct seq_file
*seq
)
33 struct net
*net
= seq_file_net(seq
);
34 struct ct_iter_state
*st
= seq
->private;
35 struct hlist_nulls_node
*n
;
38 st
->bucket
< net
->ct
.htable_size
;
41 hlist_nulls_first_rcu(&net
->ct
.hash
[st
->bucket
]));
48 static struct hlist_nulls_node
*ct_get_next(struct seq_file
*seq
,
49 struct hlist_nulls_node
*head
)
51 struct net
*net
= seq_file_net(seq
);
52 struct ct_iter_state
*st
= seq
->private;
54 head
= rcu_dereference(hlist_nulls_next_rcu(head
));
55 while (is_a_nulls(head
)) {
56 if (likely(get_nulls_value(head
) == st
->bucket
)) {
57 if (++st
->bucket
>= net
->ct
.htable_size
)
60 head
= rcu_dereference(
61 hlist_nulls_first_rcu(&net
->ct
.hash
[st
->bucket
]));
66 static struct hlist_nulls_node
*ct_get_idx(struct seq_file
*seq
, loff_t pos
)
68 struct hlist_nulls_node
*head
= ct_get_first(seq
);
71 while (pos
&& (head
= ct_get_next(seq
, head
)))
73 return pos
? NULL
: head
;
76 static void *ct_seq_start(struct seq_file
*seq
, loff_t
*pos
)
80 return ct_get_idx(seq
, *pos
);
83 static void *ct_seq_next(struct seq_file
*s
, void *v
, loff_t
*pos
)
86 return ct_get_next(s
, v
);
89 static void ct_seq_stop(struct seq_file
*s
, void *v
)
95 #ifdef CONFIG_NF_CONNTRACK_SECMARK
96 static int ct_show_secctx(struct seq_file
*s
, const struct nf_conn
*ct
)
102 ret
= security_secid_to_secctx(ct
->secmark
, &secctx
, &len
);
106 ret
= seq_printf(s
, "secctx=%s ", secctx
);
108 security_release_secctx(secctx
, len
);
112 static inline int ct_show_secctx(struct seq_file
*s
, const struct nf_conn
*ct
)
118 static int ct_seq_show(struct seq_file
*s
, void *v
)
120 struct nf_conntrack_tuple_hash
*hash
= v
;
121 struct nf_conn
*ct
= nf_ct_tuplehash_to_ctrack(hash
);
122 const struct nf_conntrack_l3proto
*l3proto
;
123 const struct nf_conntrack_l4proto
*l4proto
;
127 if (unlikely(!atomic_inc_not_zero(&ct
->ct_general
.use
)))
131 /* we only want to print DIR_ORIGINAL */
132 if (NF_CT_DIRECTION(hash
))
134 if (nf_ct_l3num(ct
) != AF_INET
)
137 l3proto
= __nf_ct_l3proto_find(nf_ct_l3num(ct
));
138 NF_CT_ASSERT(l3proto
);
139 l4proto
= __nf_ct_l4proto_find(nf_ct_l3num(ct
), nf_ct_protonum(ct
));
140 NF_CT_ASSERT(l4proto
);
143 if (seq_printf(s
, "%-8s %u %ld ",
144 l4proto
->name
, nf_ct_protonum(ct
),
145 timer_pending(&ct
->timeout
)
146 ? (long)(ct
->timeout
.expires
- jiffies
)/HZ
: 0) != 0)
149 if (l4proto
->print_conntrack
&& l4proto
->print_conntrack(s
, ct
))
152 if (print_tuple(s
, &ct
->tuplehash
[IP_CT_DIR_ORIGINAL
].tuple
,
156 if (seq_print_acct(s
, ct
, IP_CT_DIR_ORIGINAL
))
159 if (!(test_bit(IPS_SEEN_REPLY_BIT
, &ct
->status
)))
160 if (seq_printf(s
, "[UNREPLIED] "))
163 if (print_tuple(s
, &ct
->tuplehash
[IP_CT_DIR_REPLY
].tuple
,
167 if (seq_print_acct(s
, ct
, IP_CT_DIR_REPLY
))
170 if (test_bit(IPS_ASSURED_BIT
, &ct
->status
))
171 if (seq_printf(s
, "[ASSURED] "))
174 #ifdef CONFIG_NF_CONNTRACK_MARK
175 if (seq_printf(s
, "mark=%u ", ct
->mark
))
179 if (ct_show_secctx(s
, ct
))
182 if (seq_printf(s
, "use=%u\n", atomic_read(&ct
->ct_general
.use
)))
190 static const struct seq_operations ct_seq_ops
= {
191 .start
= ct_seq_start
,
197 static int ct_open(struct inode
*inode
, struct file
*file
)
199 return seq_open_net(inode
, file
, &ct_seq_ops
,
200 sizeof(struct ct_iter_state
));
203 static const struct file_operations ct_file_ops
= {
204 .owner
= THIS_MODULE
,
208 .release
= seq_release_net
,
212 struct ct_expect_iter_state
{
213 struct seq_net_private p
;
217 static struct hlist_node
*ct_expect_get_first(struct seq_file
*seq
)
219 struct net
*net
= seq_file_net(seq
);
220 struct ct_expect_iter_state
*st
= seq
->private;
221 struct hlist_node
*n
;
223 for (st
->bucket
= 0; st
->bucket
< nf_ct_expect_hsize
; st
->bucket
++) {
225 hlist_first_rcu(&net
->ct
.expect_hash
[st
->bucket
]));
232 static struct hlist_node
*ct_expect_get_next(struct seq_file
*seq
,
233 struct hlist_node
*head
)
235 struct net
*net
= seq_file_net(seq
);
236 struct ct_expect_iter_state
*st
= seq
->private;
238 head
= rcu_dereference(hlist_next_rcu(head
));
239 while (head
== NULL
) {
240 if (++st
->bucket
>= nf_ct_expect_hsize
)
242 head
= rcu_dereference(
243 hlist_first_rcu(&net
->ct
.expect_hash
[st
->bucket
]));
248 static struct hlist_node
*ct_expect_get_idx(struct seq_file
*seq
, loff_t pos
)
250 struct hlist_node
*head
= ct_expect_get_first(seq
);
253 while (pos
&& (head
= ct_expect_get_next(seq
, head
)))
255 return pos
? NULL
: head
;
258 static void *exp_seq_start(struct seq_file
*seq
, loff_t
*pos
)
262 return ct_expect_get_idx(seq
, *pos
);
265 static void *exp_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
268 return ct_expect_get_next(seq
, v
);
271 static void exp_seq_stop(struct seq_file
*seq
, void *v
)
277 static int exp_seq_show(struct seq_file
*s
, void *v
)
279 struct nf_conntrack_expect
*exp
;
280 const struct hlist_node
*n
= v
;
282 exp
= hlist_entry(n
, struct nf_conntrack_expect
, hnode
);
284 if (exp
->tuple
.src
.l3num
!= AF_INET
)
287 if (exp
->timeout
.function
)
288 seq_printf(s
, "%ld ", timer_pending(&exp
->timeout
)
289 ? (long)(exp
->timeout
.expires
- jiffies
)/HZ
: 0);
293 seq_printf(s
, "proto=%u ", exp
->tuple
.dst
.protonum
);
295 print_tuple(s
, &exp
->tuple
,
296 __nf_ct_l3proto_find(exp
->tuple
.src
.l3num
),
297 __nf_ct_l4proto_find(exp
->tuple
.src
.l3num
,
298 exp
->tuple
.dst
.protonum
));
299 return seq_putc(s
, '\n');
302 static const struct seq_operations exp_seq_ops
= {
303 .start
= exp_seq_start
,
304 .next
= exp_seq_next
,
305 .stop
= exp_seq_stop
,
309 static int exp_open(struct inode
*inode
, struct file
*file
)
311 return seq_open_net(inode
, file
, &exp_seq_ops
,
312 sizeof(struct ct_expect_iter_state
));
315 static const struct file_operations ip_exp_file_ops
= {
316 .owner
= THIS_MODULE
,
320 .release
= seq_release_net
,
323 static void *ct_cpu_seq_start(struct seq_file
*seq
, loff_t
*pos
)
325 struct net
*net
= seq_file_net(seq
);
329 return SEQ_START_TOKEN
;
331 for (cpu
= *pos
-1; cpu
< nr_cpu_ids
; ++cpu
) {
332 if (!cpu_possible(cpu
))
335 return per_cpu_ptr(net
->ct
.stat
, cpu
);
341 static void *ct_cpu_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
343 struct net
*net
= seq_file_net(seq
);
346 for (cpu
= *pos
; cpu
< nr_cpu_ids
; ++cpu
) {
347 if (!cpu_possible(cpu
))
350 return per_cpu_ptr(net
->ct
.stat
, cpu
);
356 static void ct_cpu_seq_stop(struct seq_file
*seq
, void *v
)
360 static int ct_cpu_seq_show(struct seq_file
*seq
, void *v
)
362 struct net
*net
= seq_file_net(seq
);
363 unsigned int nr_conntracks
= atomic_read(&net
->ct
.count
);
364 const struct ip_conntrack_stat
*st
= v
;
366 if (v
== SEQ_START_TOKEN
) {
367 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");
371 seq_printf(seq
, "%08x %08x %08x %08x %08x %08x %08x %08x "
372 "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
395 static const struct seq_operations ct_cpu_seq_ops
= {
396 .start
= ct_cpu_seq_start
,
397 .next
= ct_cpu_seq_next
,
398 .stop
= ct_cpu_seq_stop
,
399 .show
= ct_cpu_seq_show
,
402 static int ct_cpu_seq_open(struct inode
*inode
, struct file
*file
)
404 return seq_open_net(inode
, file
, &ct_cpu_seq_ops
,
405 sizeof(struct seq_net_private
));
408 static const struct file_operations ct_cpu_seq_fops
= {
409 .owner
= THIS_MODULE
,
410 .open
= ct_cpu_seq_open
,
413 .release
= seq_release_net
,
416 static int __net_init
ip_conntrack_net_init(struct net
*net
)
418 struct proc_dir_entry
*proc
, *proc_exp
, *proc_stat
;
420 proc
= proc_create("ip_conntrack", 0440, net
->proc_net
, &ct_file_ops
);
424 proc_exp
= proc_create("ip_conntrack_expect", 0440, net
->proc_net
,
429 proc_stat
= proc_create("ip_conntrack", S_IRUGO
,
430 net
->proc_net_stat
, &ct_cpu_seq_fops
);
436 proc_net_remove(net
, "ip_conntrack_expect");
438 proc_net_remove(net
, "ip_conntrack");
443 static void __net_exit
ip_conntrack_net_exit(struct net
*net
)
445 remove_proc_entry("ip_conntrack", net
->proc_net_stat
);
446 proc_net_remove(net
, "ip_conntrack_expect");
447 proc_net_remove(net
, "ip_conntrack");
450 static struct pernet_operations ip_conntrack_net_ops
= {
451 .init
= ip_conntrack_net_init
,
452 .exit
= ip_conntrack_net_exit
,
455 int __init
nf_conntrack_ipv4_compat_init(void)
457 return register_pernet_subsys(&ip_conntrack_net_ops
);
460 void __exit
nf_conntrack_ipv4_compat_fini(void)
462 unregister_pernet_subsys(&ip_conntrack_net_ops
);