[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 (nf_ct_l3num(ct) != AF_INET)
		return 0;

	l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
	NF_CT_ASSERT(l3proto);
	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
	NF_CT_ASSERT(l4proto);

	if (seq_printf(s, "%-8s %u %ld ",
		      l4proto->name, nf_ct_protonum(ct),
		      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 = proc_create("ip_conntrack", S_IRUGO,
				init_net.proc_net_stat, &ct_cpu_seq_fops);
	if (!proc_stat)
		goto err3;
	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;
5e8fbe2a	109	if (nf_ct_l3num(ct) != AF_INET)
e4bd8bce PM	110	return 0;
e4bd8bce PM	111
5e8fbe2a	112	l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
e4bd8bce	113	NF_CT_ASSERT(l3proto);
5e8fbe2a	114	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
e4bd8bce PM	115	NF_CT_ASSERT(l4proto);
	116
	117	if (seq_printf(s, "%-8s %u %ld ",
5e8fbe2a	118	l4proto->name, nf_ct_protonum(ct),
e4bd8bce PM	119	timer_pending(&ct->timeout)
	120	? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
	121	return -ENOSPC;
	122
c71e9167	123	if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
e4bd8bce PM	124	return -ENOSPC;
	125
	126	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
	127	l3proto, l4proto))
	128	return -ENOSPC;
	129
e905a9ed	130	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
e4bd8bce PM	131	return -ENOSPC;
	132
	133	if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
	134	if (seq_printf(s, "[UNREPLIED] "))
	135	return -ENOSPC;
	136
	137	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
	138	l3proto, l4proto))
	139	return -ENOSPC;
	140
e905a9ed	141	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
e4bd8bce PM	142	return -ENOSPC;
	143
	144	if (test_bit(IPS_ASSURED_BIT, &ct->status))
	145	if (seq_printf(s, "[ASSURED] "))
	146	return -ENOSPC;
	147
	148	#ifdef CONFIG_NF_CONNTRACK_MARK
	149	if (seq_printf(s, "mark=%u ", ct->mark))
	150	return -ENOSPC;
	151	#endif
	152
	153	#ifdef CONFIG_NF_CONNTRACK_SECMARK
	154	if (seq_printf(s, "secmark=%u ", ct->secmark))
	155	return -ENOSPC;
	156	#endif
	157
	158	if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
	159	return -ENOSPC;
	160
	161	return 0;
	162	}
	163
56b3d975	164	static const struct seq_operations ct_seq_ops = {
e4bd8bce PM	165	.start = ct_seq_start,
	166	.next = ct_seq_next,
	167	.stop = ct_seq_stop,
	168	.show = ct_seq_show
	169	};
	170
	171	static int ct_open(struct inode inode, struct file file)
	172	{
e2da5913 PE	173	return seq_open_private(file, &ct_seq_ops,
e2da5913 PE	174	sizeof(struct ct_iter_state));
e4bd8bce PM	175	}
e4bd8bce PM	176
9a32144e	177	static const struct file_operations ct_file_ops = {
e4bd8bce PM	178	.owner = THIS_MODULE,
	179	.open = ct_open,
	180	.read = seq_read,
	181	.llseek = seq_lseek,
	182	.release = seq_release_private,
	183	};
	184
	185	/* expects */
5d08ad44 PM	186	struct ct_expect_iter_state {
	187	unsigned int bucket;
	188	};
	189
	190	static struct hlist_node ct_expect_get_first(struct seq_file seq)
e4bd8bce	191	{
5d08ad44	192	struct ct_expect_iter_state *st = seq->private;
7d0742da	193	struct hlist_node *n;
e4bd8bce	194
5d08ad44	195	for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
7d0742da PM	196	n = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
	197	if (n)
	198	return n;
5d08ad44 PM	199	}
	200	return NULL;
	201	}
e4bd8bce	202
5d08ad44 PM	203	static struct hlist_node ct_expect_get_next(struct seq_file seq,
	204	struct hlist_node *head)
	205	{
	206	struct ct_expect_iter_state *st = seq->private;
e4bd8bce	207
7d0742da	208	head = rcu_dereference(head->next);
5d08ad44 PM	209	while (head == NULL) {
5d08ad44 PM	210	if (++st->bucket >= nf_ct_expect_hsize)
e4bd8bce	211	return NULL;
7d0742da	212	head = rcu_dereference(nf_ct_expect_hash[st->bucket].first);
e4bd8bce	213	}
5d08ad44	214	return head;
e4bd8bce PM	215	}
e4bd8bce PM	216
5d08ad44	217	static struct hlist_node ct_expect_get_idx(struct seq_file seq, loff_t pos)
e4bd8bce	218	{
5d08ad44	219	struct hlist_node *head = ct_expect_get_first(seq);
e4bd8bce	220
5d08ad44 PM	221	if (head)
	222	while (pos && (head = ct_expect_get_next(seq, head)))
	223	pos--;
	224	return pos ? NULL : head;
	225	}
e4bd8bce	226
5d08ad44	227	static void exp_seq_start(struct seq_file seq, loff_t *pos)
76507f69	228	__acquires(RCU)
5d08ad44	229	{
7d0742da	230	rcu_read_lock();
5d08ad44 PM	231	return ct_expect_get_idx(seq, *pos);
5d08ad44 PM	232	}
e4bd8bce	233
5d08ad44 PM	234	static void exp_seq_next(struct seq_file seq, void v, loff_t pos)
	235	{
	236	(*pos)++;
	237	return ct_expect_get_next(seq, v);
e4bd8bce PM	238	}
e4bd8bce PM	239
5d08ad44	240	static void exp_seq_stop(struct seq_file seq, void v)
76507f69	241	__releases(RCU)
e4bd8bce	242	{
7d0742da	243	rcu_read_unlock();
e4bd8bce PM	244	}
	245
	246	static int exp_seq_show(struct seq_file s, void v)
	247	{
5d08ad44	248	struct nf_conntrack_expect *exp;
32948588	249	const struct hlist_node *n = v;
5d08ad44 PM	250
5d08ad44 PM	251	exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
e4bd8bce PM	252
	253	if (exp->tuple.src.l3num != AF_INET)
	254	return 0;
	255
	256	if (exp->timeout.function)
	257	seq_printf(s, "%ld ", timer_pending(&exp->timeout)
	258	? (long)(exp->timeout.expires - jiffies)/HZ : 0);
	259	else
	260	seq_printf(s, "- ");
	261
	262	seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
	263
	264	print_tuple(s, &exp->tuple,
	265	__nf_ct_l3proto_find(exp->tuple.src.l3num),
	266	__nf_ct_l4proto_find(exp->tuple.src.l3num,
e905a9ed	267	exp->tuple.dst.protonum));
e4bd8bce PM	268	return seq_putc(s, '\n');
	269	}
	270
56b3d975	271	static const struct seq_operations exp_seq_ops = {
e4bd8bce PM	272	.start = exp_seq_start,
	273	.next = exp_seq_next,
	274	.stop = exp_seq_stop,
	275	.show = exp_seq_show
	276	};
	277
	278	static int exp_open(struct inode inode, struct file file)
	279	{
e2da5913 PE	280	return seq_open_private(file, &exp_seq_ops,
e2da5913 PE	281	sizeof(struct ct_expect_iter_state));
e4bd8bce PM	282	}
e4bd8bce PM	283
9a32144e	284	static const struct file_operations ip_exp_file_ops = {
e4bd8bce PM	285	.owner = THIS_MODULE,
	286	.open = exp_open,
	287	.read = seq_read,
	288	.llseek = seq_lseek,
5d08ad44	289	.release = seq_release_private,
e4bd8bce PM	290	};
	291
	292	static void ct_cpu_seq_start(struct seq_file seq, loff_t *pos)
	293	{
	294	int cpu;
	295
	296	if (*pos == 0)
	297	return SEQ_START_TOKEN;
	298
	299	for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
	300	if (!cpu_possible(cpu))
	301	continue;
	302	*pos = cpu+1;
	303	return &per_cpu(nf_conntrack_stat, cpu);
	304	}
	305
	306	return NULL;
	307	}
	308
	309	static void ct_cpu_seq_next(struct seq_file seq, void v, loff_t pos)
	310	{
	311	int cpu;
	312
	313	for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
	314	if (!cpu_possible(cpu))
	315	continue;
	316	*pos = cpu+1;
	317	return &per_cpu(nf_conntrack_stat, cpu);
	318	}
	319
	320	return NULL;
	321	}
	322
	323	static void ct_cpu_seq_stop(struct seq_file seq, void v)
	324	{
	325	}
	326
	327	static int ct_cpu_seq_show(struct seq_file seq, void v)
	328	{
	329	unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
32948588	330	const struct ip_conntrack_stat *st = v;
e4bd8bce PM	331
	332	if (v == SEQ_START_TOKEN) {
	333	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");
	334	return 0;
	335	}
	336
	337	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
	338	"%08x %08x %08x %08x %08x %08x %08x %08x \n",
	339	nr_conntracks,
	340	st->searched,
	341	st->found,
	342	st->new,
	343	st->invalid,
	344	st->ignore,
	345	st->delete,
	346	st->delete_list,
	347	st->insert,
	348	st->insert_failed,
	349	st->drop,
	350	st->early_drop,
	351	st->error,
	352
	353	st->expect_new,
	354	st->expect_create,
	355	st->expect_delete
	356	);
	357	return 0;
	358	}
	359
56b3d975	360	static const struct seq_operations ct_cpu_seq_ops = {
e4bd8bce PM	361	.start = ct_cpu_seq_start,
	362	.next = ct_cpu_seq_next,
	363	.stop = ct_cpu_seq_stop,
	364	.show = ct_cpu_seq_show,
	365	};
	366
	367	static int ct_cpu_seq_open(struct inode inode, struct file file)
	368	{
	369	return seq_open(file, &ct_cpu_seq_ops);
	370	}
	371
9a32144e	372	static const struct file_operations ct_cpu_seq_fops = {
e4bd8bce PM	373	.owner = THIS_MODULE,
	374	.open = ct_cpu_seq_open,
	375	.read = seq_read,
	376	.llseek = seq_lseek,
665bba10	377	.release = seq_release,
e4bd8bce PM	378	};
	379
	380	int __init nf_conntrack_ipv4_compat_init(void)
	381	{
	382	struct proc_dir_entry proc, proc_exp, *proc_stat;
	383
457c4cbc	384	proc = proc_net_fops_create(&init_net, "ip_conntrack", 0440, &ct_file_ops);
e4bd8bce PM	385	if (!proc)
	386	goto err1;
	387
457c4cbc	388	proc_exp = proc_net_fops_create(&init_net, "ip_conntrack_expect", 0440,
e4bd8bce PM	389	&ip_exp_file_ops);
	390	if (!proc_exp)
	391	goto err2;
	392
8eeee8b1 DL	393	proc_stat = proc_create("ip_conntrack", S_IRUGO,
8eeee8b1 DL	394	init_net.proc_net_stat, &ct_cpu_seq_fops);
e4bd8bce PM	395	if (!proc_stat)
e4bd8bce PM	396	goto err3;
e4bd8bce PM	397	return 0;
	398
	399	err3:
457c4cbc	400	proc_net_remove(&init_net, "ip_conntrack_expect");
e4bd8bce	401	err2:
457c4cbc	402	proc_net_remove(&init_net, "ip_conntrack");
e4bd8bce PM	403	err1:
	404	return -ENOMEM;
	405	}
	406
	407	void __exit nf_conntrack_ipv4_compat_fini(void)
	408	{
457c4cbc EB	409	remove_proc_entry("ip_conntrack", init_net.proc_net_stat);
	410	proc_net_remove(&init_net, "ip_conntrack_expect");
	411	proc_net_remove(&init_net, "ip_conntrack");
e4bd8bce	412	}