[deliverable/linux.git] / net / ipv4 / netfilter / nf_conntrack_l3proto_ipv4_compat.c

/* ip_conntrack proc compat - based on ip_conntrack_standalone.c
 *
 * (C) 1999-2001 Paul `Rusty' Russell
 * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/percpu.h>
#include <net/net_namespace.h>

#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_expect.h>

#ifdef CONFIG_NF_CT_ACCT
static unsigned int
seq_print_counters(struct seq_file *s,
		   const struct ip_conntrack_counter *counter)
{
	return seq_printf(s, "packets=%llu bytes=%llu ",
			  (unsigned long long)counter->packets,
			  (unsigned long long)counter->bytes);
}
#else
#define seq_print_counters(x, y)	0
#endif

struct ct_iter_state {
	unsigned int bucket;
};

static struct hlist_node *ct_get_first(struct seq_file *seq)
{
	struct ct_iter_state *st = seq->private;
	struct hlist_node *n;

	for (st->bucket = 0;
	     st->bucket < nf_conntrack_htable_size;
	     st->bucket++) {
		n = rcu_dereference(nf_conntrack_hash[st->bucket].first);
		if (n)
			return n;
	}
	return NULL;
}

static struct hlist_node *ct_get_next(struct seq_file *seq,
				      struct hlist_node *head)
{
	struct ct_iter_state *st = seq->private;

	head = rcu_dereference(head->next);
	while (head == NULL) {
		if (++st->bucket >= nf_conntrack_htable_size)
			return NULL;
		head = rcu_dereference(nf_conntrack_hash[st->bucket].first);
	}
	return head;
}

static struct hlist_node *ct_get_idx(struct seq_file *seq, loff_t pos)
{
	struct hlist_node *head = ct_get_first(seq);

	if (head)
		while (pos && (head = ct_get_next(seq, head)))
			pos--;
	return pos ? NULL : head;
}

static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(RCU)
{
	rcu_read_lock();
	return ct_get_idx(seq, *pos);
}

static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
{
	(*pos)++;
	return ct_get_next(s, v);
}

static void ct_seq_stop(struct seq_file *s, void *v)
	__releases(RCU)
{
	rcu_read_unlock();
}

static int ct_seq_show(struct seq_file *s, void *v)
{
	const struct nf_conntrack_tuple_hash *hash = v;
	const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
	const struct nf_conntrack_l3proto *l3proto;
	const struct nf_conntrack_l4proto *l4proto;

	NF_CT_ASSERT(ct);

	/* we only want to print DIR_ORIGINAL */
	if (NF_CT_DIRECTION(hash))
		return 0;
	if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num != AF_INET)
		return 0;

	l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
				       .tuple.src.l3num);
	NF_CT_ASSERT(l3proto);
	l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
				       .tuple.src.l3num,
				       ct->tuplehash[IP_CT_DIR_ORIGINAL]
				       .tuple.dst.protonum);
	NF_CT_ASSERT(l4proto);

	if (seq_printf(s, "%-8s %u %ld ",
		      l4proto->name,
		      ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
		      timer_pending(&ct->timeout)
		      ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
		return -ENOSPC;

	if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
		return -ENOSPC;

	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
			l3proto, l4proto))
		return -ENOSPC;

	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
		return -ENOSPC;

	if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
		if (seq_printf(s, "[UNREPLIED] "))
			return -ENOSPC;

	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
			l3proto, l4proto))
		return -ENOSPC;

	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
		return -ENOSPC;

	if (test_bit(IPS_ASSURED_BIT, &ct->status))
		if (seq_printf(s, "[ASSURED] "))
			return -ENOSPC;

#ifdef CONFIG_NF_CONNTRACK_MARK
	if (seq_printf(s, "mark=%u ", ct->mark))
		return -ENOSPC;
#endif

#ifdef CONFIG_NF_CONNTRACK_SECMARK
	if (seq_printf(s, "secmark=%u ", ct->secmark))
		return -ENOSPC;
#endif

	if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
		return -ENOSPC;

	return 0;
}

static const struct seq_operations ct_seq_ops = {
	.start = ct_seq_start,
	.next  = ct_seq_next,
	.stop  = ct_seq_stop,
	.show  = ct_seq_show
};

static int ct_open(struct inode *inode, struct file *file)
{
	return seq_open_private(file, &ct_seq_ops,
			sizeof(struct ct_iter_state));
}

static const struct file_operations ct_file_ops = {
	.owner   = THIS_MODULE,
	.open    = ct_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_private,
};

/* expects */
struct ct_expect_iter_state {
	unsigned int bucket;
};

static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
{
	struct ct_expect_iter_state *st = seq->private;
	struct hlist_node *n;

	for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
		n = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
		if (n)
			return n;
	}
	return NULL;
}

static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
					     struct hlist_node *head)
{
	struct ct_expect_iter_state *st = seq->private;

	head = rcu_dereference(head->next);
	while (head == NULL) {
		if (++st->bucket >= nf_ct_expect_hsize)
			return NULL;
		head = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
	}
	return head;
}

static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos)
{
	struct hlist_node *head = ct_expect_get_first(seq);

	if (head)
		while (pos && (head = ct_expect_get_next(seq, head)))
			pos--;
	return pos ? NULL : head;
}

static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(RCU)
{
	rcu_read_lock();
	return ct_expect_get_idx(seq, *pos);
}

static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	(*pos)++;
	return ct_expect_get_next(seq, v);
}

static void exp_seq_stop(struct seq_file *seq, void *v)
	__releases(RCU)
{
	rcu_read_unlock();
}

static int exp_seq_show(struct seq_file *s, void *v)
{
	struct nf_conntrack_expect *exp;
	const struct hlist_node *n = v;

	exp = hlist_entry(n, struct nf_conntrack_expect, hnode);

	if (exp->tuple.src.l3num != AF_INET)
		return 0;

	if (exp->timeout.function)
		seq_printf(s, "%ld ", timer_pending(&exp->timeout)
			   ? (long)(exp->timeout.expires - jiffies)/HZ : 0);
	else
		seq_printf(s, "- ");

	seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);

	print_tuple(s, &exp->tuple,
		    __nf_ct_l3proto_find(exp->tuple.src.l3num),
		    __nf_ct_l4proto_find(exp->tuple.src.l3num,
					 exp->tuple.dst.protonum));
	return seq_putc(s, '\n');
}

static const struct seq_operations exp_seq_ops = {
	.start = exp_seq_start,
	.next = exp_seq_next,
	.stop = exp_seq_stop,
	.show = exp_seq_show
};

static int exp_open(struct inode *inode, struct file *file)
{
	return seq_open_private(file, &exp_seq_ops,
			sizeof(struct ct_expect_iter_state));
}

static const struct file_operations ip_exp_file_ops = {
	.owner   = THIS_MODULE,
	.open    = exp_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_private,
};

static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
{
	int cpu;

	if (*pos == 0)
		return SEQ_START_TOKEN;

	for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
		if (!cpu_possible(cpu))
			continue;
		*pos = cpu+1;
		return &per_cpu(nf_conntrack_stat, cpu);
	}

	return NULL;
}

static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	int cpu;

	for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
		if (!cpu_possible(cpu))
			continue;
		*pos = cpu+1;
		return &per_cpu(nf_conntrack_stat, cpu);
	}

	return NULL;
}

static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
{
}

static int ct_cpu_seq_show(struct seq_file *seq, void *v)
{
	unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
	const struct ip_conntrack_stat *st = v;

	if (v == SEQ_START_TOKEN) {
		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");
		return 0;
	}

	seq_printf(seq, "%08x  %08x %08x %08x %08x %08x %08x %08x "
			"%08x %08x %08x %08x %08x  %08x %08x %08x \n",
		   nr_conntracks,
		   st->searched,
		   st->found,
		   st->new,
		   st->invalid,
		   st->ignore,
		   st->delete,
		   st->delete_list,
		   st->insert,
		   st->insert_failed,
		   st->drop,
		   st->early_drop,
		   st->error,

		   st->expect_new,
		   st->expect_create,
		   st->expect_delete
		);
	return 0;
}

static const struct seq_operations ct_cpu_seq_ops = {
	.start  = ct_cpu_seq_start,
	.next   = ct_cpu_seq_next,
	.stop   = ct_cpu_seq_stop,
	.show   = ct_cpu_seq_show,
};

static int ct_cpu_seq_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &ct_cpu_seq_ops);
}

static const struct file_operations ct_cpu_seq_fops = {
	.owner   = THIS_MODULE,
	.open    = ct_cpu_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release,
};

int __init nf_conntrack_ipv4_compat_init(void)
{
	struct proc_dir_entry *proc, *proc_exp, *proc_stat;

	proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops);
	if (!proc)
		goto err1;

	proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440,
					&ip_exp_file_ops);
	if (!proc_exp)
		goto err2;

	proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, init_net.proc_net_stat);
	if (!proc_stat)
		goto err3;

	proc_stat->proc_fops = &ct_cpu_seq_fops;
	proc_stat->owner = THIS_MODULE;

	return 0;

err3:
	proc_net_remove(&init_net, "ip_conntrack_expect");
err2:
	proc_net_remove(&init_net, "ip_conntrack");
err1:
	return -ENOMEM;
}

void __exit nf_conntrack_ipv4_compat_fini(void)
{
	remove_proc_entry("ip_conntrack", init_net.proc_net_stat);
	proc_net_remove(&init_net, "ip_conntrack_expect");
	proc_net_remove(&init_net, "ip_conntrack");
}
Commit	Line	Data
e4bd8bce PM	1	/* ip_conntrack proc compat - based on ip_conntrack_standalone.c
	2	*
	3	* (C) 1999-2001 Paul `Rusty' Russell
	4	* (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
	5	*
	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.
	9	*/
	10	#include <linux/types.h>
	11	#include <linux/proc_fs.h>
	12	#include <linux/seq_file.h>
	13	#include <linux/percpu.h>
457c4cbc	14	#include <net/net_namespace.h>
e4bd8bce PM	15
	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>
	21
e4bd8bce PM	22	#ifdef CONFIG_NF_CT_ACCT
	23	static unsigned int
	24	seq_print_counters(struct seq_file *s,
	25	const struct ip_conntrack_counter *counter)
	26	{
	27	return seq_printf(s, "packets=%llu bytes=%llu ",
	28	(unsigned long long)counter->packets,
	29	(unsigned long long)counter->bytes);
	30	}
	31	#else
	32	#define seq_print_counters(x, y) 0
	33	#endif
	34
	35	struct ct_iter_state {
	36	unsigned int bucket;
	37	};
	38
f205c5e0	39	static struct hlist_node ct_get_first(struct seq_file seq)
e4bd8bce PM	40	{
e4bd8bce PM	41	struct ct_iter_state *st = seq->private;
76507f69	42	struct hlist_node *n;
e4bd8bce PM	43
	44	for (st->bucket = 0;
	45	st->bucket < nf_conntrack_htable_size;
	46	st->bucket++) {
76507f69 PM	47	n = rcu_dereference(nf_conntrack_hash[st->bucket].first);
	48	if (n)
	49	return n;
e4bd8bce PM	50	}
	51	return NULL;
	52	}
	53
f205c5e0 PM	54	static struct hlist_node ct_get_next(struct seq_file seq,
f205c5e0 PM	55	struct hlist_node *head)
e4bd8bce PM	56	{
	57	struct ct_iter_state *st = seq->private;
	58
76507f69	59	head = rcu_dereference(head->next);
f205c5e0	60	while (head == NULL) {
e4bd8bce PM	61	if (++st->bucket >= nf_conntrack_htable_size)
e4bd8bce PM	62	return NULL;
76507f69	63	head = rcu_dereference(nf_conntrack_hash[st->bucket].first);
e4bd8bce PM	64	}
	65	return head;
	66	}
	67
f205c5e0	68	static struct hlist_node ct_get_idx(struct seq_file seq, loff_t pos)
e4bd8bce	69	{
f205c5e0	70	struct hlist_node *head = ct_get_first(seq);
e4bd8bce PM	71
	72	if (head)
	73	while (pos && (head = ct_get_next(seq, head)))
	74	pos--;
	75	return pos ? NULL : head;
	76	}
	77
	78	static void ct_seq_start(struct seq_file seq, loff_t *pos)
76507f69	79	__acquires(RCU)
e4bd8bce	80	{
76507f69	81	rcu_read_lock();
e4bd8bce PM	82	return ct_get_idx(seq, *pos);
	83	}
	84
	85	static void ct_seq_next(struct seq_file s, void v, loff_t pos)
	86	{
	87	(*pos)++;
	88	return ct_get_next(s, v);
	89	}
	90
	91	static void ct_seq_stop(struct seq_file s, void v)
76507f69	92	__releases(RCU)
e4bd8bce	93	{
76507f69	94	rcu_read_unlock();
e4bd8bce PM	95	}
	96
	97	static int ct_seq_show(struct seq_file s, void v)
	98	{
	99	const struct nf_conntrack_tuple_hash *hash = v;
	100	const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
32948588 JE	101	const struct nf_conntrack_l3proto *l3proto;
32948588 JE	102	const struct nf_conntrack_l4proto *l4proto;
e4bd8bce PM	103
	104	NF_CT_ASSERT(ct);
	105
	106	/* we only want to print DIR_ORIGINAL */
	107	if (NF_CT_DIRECTION(hash))
	108	return 0;
	109	if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num != AF_INET)
	110	return 0;
	111
	112	l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
	113	.tuple.src.l3num);
	114	NF_CT_ASSERT(l3proto);
	115	l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
	116	.tuple.src.l3num,
	117	ct->tuplehash[IP_CT_DIR_ORIGINAL]
	118	.tuple.dst.protonum);
	119	NF_CT_ASSERT(l4proto);
	120
	121	if (seq_printf(s, "%-8s %u %ld ",
	122	l4proto->name,
	123	ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
	124	timer_pending(&ct->timeout)
	125	? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
	126	return -ENOSPC;
	127
c71e9167	128	if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
e4bd8bce PM	129	return -ENOSPC;
	130
	131	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
	132	l3proto, l4proto))
	133	return -ENOSPC;
	134
e905a9ed	135	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
e4bd8bce PM	136	return -ENOSPC;
	137
	138	if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
	139	if (seq_printf(s, "[UNREPLIED] "))
	140	return -ENOSPC;
	141
	142	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
	143	l3proto, l4proto))
	144	return -ENOSPC;
	145
e905a9ed	146	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
e4bd8bce PM	147	return -ENOSPC;
	148
	149	if (test_bit(IPS_ASSURED_BIT, &ct->status))
	150	if (seq_printf(s, "[ASSURED] "))
	151	return -ENOSPC;
	152
	153	#ifdef CONFIG_NF_CONNTRACK_MARK
	154	if (seq_printf(s, "mark=%u ", ct->mark))
	155	return -ENOSPC;
	156	#endif
	157
	158	#ifdef CONFIG_NF_CONNTRACK_SECMARK
	159	if (seq_printf(s, "secmark=%u ", ct->secmark))
	160	return -ENOSPC;
	161	#endif
	162
	163	if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
	164	return -ENOSPC;
	165
	166	return 0;
	167	}
	168
56b3d975	169	static const struct seq_operations ct_seq_ops = {
e4bd8bce PM	170	.start = ct_seq_start,
	171	.next = ct_seq_next,
	172	.stop = ct_seq_stop,
	173	.show = ct_seq_show
	174	};
	175
	176	static int ct_open(struct inode inode, struct file file)
	177	{
e2da5913 PE	178	return seq_open_private(file, &ct_seq_ops,
e2da5913 PE	179	sizeof(struct ct_iter_state));
e4bd8bce PM	180	}
e4bd8bce PM	181
9a32144e	182	static const struct file_operations ct_file_ops = {
e4bd8bce PM	183	.owner = THIS_MODULE,
	184	.open = ct_open,
	185	.read = seq_read,
	186	.llseek = seq_lseek,
	187	.release = seq_release_private,
	188	};
	189
	190	/* expects */
5d08ad44 PM	191	struct ct_expect_iter_state {
	192	unsigned int bucket;
	193	};
	194
	195	static struct hlist_node ct_expect_get_first(struct seq_file seq)
e4bd8bce	196	{
5d08ad44	197	struct ct_expect_iter_state *st = seq->private;
7d0742da	198	struct hlist_node *n;
e4bd8bce	199
5d08ad44	200	for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
7d0742da PM	201	n = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
	202	if (n)
	203	return n;
5d08ad44 PM	204	}
	205	return NULL;
	206	}
e4bd8bce	207
5d08ad44 PM	208	static struct hlist_node ct_expect_get_next(struct seq_file seq,
	209	struct hlist_node *head)
	210	{
	211	struct ct_expect_iter_state *st = seq->private;
e4bd8bce	212
7d0742da	213	head = rcu_dereference(head->next);
5d08ad44 PM	214	while (head == NULL) {
5d08ad44 PM	215	if (++st->bucket >= nf_ct_expect_hsize)
e4bd8bce	216	return NULL;
7d0742da	217	head = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
e4bd8bce	218	}
5d08ad44	219	return head;
e4bd8bce PM	220	}
e4bd8bce PM	221
5d08ad44	222	static struct hlist_node ct_expect_get_idx(struct seq_file seq, loff_t pos)
e4bd8bce	223	{
5d08ad44	224	struct hlist_node *head = ct_expect_get_first(seq);
e4bd8bce	225
5d08ad44 PM	226	if (head)
	227	while (pos && (head = ct_expect_get_next(seq, head)))
	228	pos--;
	229	return pos ? NULL : head;
	230	}
e4bd8bce	231
5d08ad44	232	static void exp_seq_start(struct seq_file seq, loff_t *pos)
76507f69	233	__acquires(RCU)
5d08ad44	234	{
7d0742da	235	rcu_read_lock();
5d08ad44 PM	236	return ct_expect_get_idx(seq, *pos);
5d08ad44 PM	237	}
e4bd8bce	238
5d08ad44 PM	239	static void exp_seq_next(struct seq_file seq, void v, loff_t pos)
	240	{
	241	(*pos)++;
	242	return ct_expect_get_next(seq, v);
e4bd8bce PM	243	}
e4bd8bce PM	244
5d08ad44	245	static void exp_seq_stop(struct seq_file seq, void v)
76507f69	246	__releases(RCU)
e4bd8bce	247	{
7d0742da	248	rcu_read_unlock();
e4bd8bce PM	249	}
	250
	251	static int exp_seq_show(struct seq_file s, void v)
	252	{
5d08ad44	253	struct nf_conntrack_expect *exp;
32948588	254	const struct hlist_node *n = v;
5d08ad44 PM	255
5d08ad44 PM	256	exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
e4bd8bce PM	257
	258	if (exp->tuple.src.l3num != AF_INET)
	259	return 0;
	260
	261	if (exp->timeout.function)
	262	seq_printf(s, "%ld ", timer_pending(&exp->timeout)
	263	? (long)(exp->timeout.expires - jiffies)/HZ : 0);
	264	else
	265	seq_printf(s, "- ");
	266
	267	seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
	268
	269	print_tuple(s, &exp->tuple,
	270	__nf_ct_l3proto_find(exp->tuple.src.l3num),
	271	__nf_ct_l4proto_find(exp->tuple.src.l3num,
e905a9ed	272	exp->tuple.dst.protonum));
e4bd8bce PM	273	return seq_putc(s, '\n');
	274	}
	275
56b3d975	276	static const struct seq_operations exp_seq_ops = {
e4bd8bce PM	277	.start = exp_seq_start,
	278	.next = exp_seq_next,
	279	.stop = exp_seq_stop,
	280	.show = exp_seq_show
	281	};
	282
	283	static int exp_open(struct inode inode, struct file file)
	284	{
e2da5913 PE	285	return seq_open_private(file, &exp_seq_ops,
e2da5913 PE	286	sizeof(struct ct_expect_iter_state));
e4bd8bce PM	287	}
e4bd8bce PM	288
9a32144e	289	static const struct file_operations ip_exp_file_ops = {
e4bd8bce PM	290	.owner = THIS_MODULE,
	291	.open = exp_open,
	292	.read = seq_read,
	293	.llseek = seq_lseek,
5d08ad44	294	.release = seq_release_private,
e4bd8bce PM	295	};
	296
	297	static void ct_cpu_seq_start(struct seq_file seq, loff_t *pos)
	298	{
	299	int cpu;
	300
	301	if (*pos == 0)
	302	return SEQ_START_TOKEN;
	303
	304	for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
	305	if (!cpu_possible(cpu))
	306	continue;
	307	*pos = cpu+1;
	308	return &per_cpu(nf_conntrack_stat, cpu);
	309	}
	310
	311	return NULL;
	312	}
	313
	314	static void ct_cpu_seq_next(struct seq_file seq, void v, loff_t pos)
	315	{
	316	int cpu;
	317
	318	for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
	319	if (!cpu_possible(cpu))
	320	continue;
	321	*pos = cpu+1;
	322	return &per_cpu(nf_conntrack_stat, cpu);
	323	}
	324
	325	return NULL;
	326	}
	327
	328	static void ct_cpu_seq_stop(struct seq_file seq, void v)
	329	{
	330	}
	331
	332	static int ct_cpu_seq_show(struct seq_file seq, void v)
	333	{
	334	unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
32948588	335	const struct ip_conntrack_stat *st = v;
e4bd8bce PM	336
	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");
	339	return 0;
	340	}
	341
	342	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
	343	"%08x %08x %08x %08x %08x %08x %08x %08x \n",
	344	nr_conntracks,
	345	st->searched,
	346	st->found,
	347	st->new,
	348	st->invalid,
	349	st->ignore,
	350	st->delete,
	351	st->delete_list,
	352	st->insert,
	353	st->insert_failed,
	354	st->drop,
	355	st->early_drop,
	356	st->error,
	357
	358	st->expect_new,
	359	st->expect_create,
	360	st->expect_delete
	361	);
	362	return 0;
	363	}
	364
56b3d975	365	static const struct seq_operations ct_cpu_seq_ops = {
e4bd8bce PM	366	.start = ct_cpu_seq_start,
	367	.next = ct_cpu_seq_next,
	368	.stop = ct_cpu_seq_stop,
	369	.show = ct_cpu_seq_show,
	370	};
	371
	372	static int ct_cpu_seq_open(struct inode inode, struct file file)
	373	{
	374	return seq_open(file, &ct_cpu_seq_ops);
	375	}
	376
9a32144e	377	static const struct file_operations ct_cpu_seq_fops = {
e4bd8bce PM	378	.owner = THIS_MODULE,
	379	.open = ct_cpu_seq_open,
	380	.read = seq_read,
	381	.llseek = seq_lseek,
665bba10	382	.release = seq_release,
e4bd8bce PM	383	};
	384
	385	int __init nf_conntrack_ipv4_compat_init(void)
	386	{
	387	struct proc_dir_entry proc, proc_exp, *proc_stat;
	388
457c4cbc	389	proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops);
e4bd8bce PM	390	if (!proc)
	391	goto err1;
	392
457c4cbc	393	proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440,
e4bd8bce PM	394	&ip_exp_file_ops);
	395	if (!proc_exp)
	396	goto err2;
	397
457c4cbc	398	proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, init_net.proc_net_stat);
e4bd8bce PM	399	if (!proc_stat)
	400	goto err3;
	401
	402	proc_stat->proc_fops = &ct_cpu_seq_fops;
	403	proc_stat->owner = THIS_MODULE;
	404
	405	return 0;
	406
	407	err3:
457c4cbc	408	proc_net_remove(&init_net, "ip_conntrack_expect");
e4bd8bce	409	err2:
457c4cbc	410	proc_net_remove(&init_net, "ip_conntrack");
e4bd8bce PM	411	err1:
	412	return -ENOMEM;
	413	}
	414
	415	void __exit nf_conntrack_ipv4_compat_fini(void)
	416	{
457c4cbc EB	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");
e4bd8bce	420	}