[mirror_ubuntu-zesty-kernel.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 <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;

	for (st->bucket = 0;
	     st->bucket < nf_conntrack_htable_size;
	     st->bucket++) {
		if (!hlist_empty(&nf_conntrack_hash[st->bucket]))
			return nf_conntrack_hash[st->bucket].first;
	}
	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 = head->next;
	while (head == NULL) {
		if (++st->bucket >= nf_conntrack_htable_size)
			return NULL;
		head = 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)
{
	read_lock_bh(&nf_conntrack_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)
{
	read_unlock_bh(&nf_conntrack_lock);
}

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);
	struct nf_conntrack_l3proto *l3proto;
	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 (l3proto->print_conntrack(s, ct))
		return -ENOSPC;

	if (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)
{
	struct seq_file *seq;
	struct ct_iter_state *st;
	int ret;

	st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
	if (st == NULL)
		return -ENOMEM;
	ret = seq_open(file, &ct_seq_ops);
	if (ret)
		goto out_free;
	seq          = file->private_data;
	seq->private = st;
	return ret;
out_free:
	kfree(st);
	return ret;
}

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;

	for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
		if (!hlist_empty(&nf_ct_expect_hash[st->bucket]))
			return nf_ct_expect_hash[st->bucket].first;
	}
	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 = head->next;
	while (head == NULL) {
		if (++st->bucket >= nf_ct_expect_hsize)
			return NULL;
		head = 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)
{
	read_lock_bh(&nf_conntrack_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)
{
	read_unlock_bh(&nf_conntrack_lock);
}

static int exp_seq_show(struct seq_file *s, void *v)
{
	struct nf_conntrack_expect *exp;
	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)
{
	struct seq_file *seq;
	struct ct_expect_iter_state *st;
	int ret;

	st = kmalloc(sizeof(struct ct_expect_iter_state), GFP_KERNEL);
	if (st == NULL)
		return -ENOMEM;
	ret = seq_open(file, &exp_seq_ops);
	if (ret)
		goto out_free;
	seq          = file->private_data;
	seq->private = st;
	memset(st, 0, sizeof(struct ct_expect_iter_state));
	return ret;
out_free:
	kfree(st);
	return ret;
}

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);
	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_private,
};

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

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

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

	proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, 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("ip_conntrack_expect");
err2:
	proc_net_remove("ip_conntrack");
err1:
	return -ENOMEM;
}

void __exit nf_conntrack_ipv4_compat_fini(void)
{
	remove_proc_entry("ip_conntrack", proc_net_stat);
	proc_net_remove("ip_conntrack_expect");
	proc_net_remove("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>
	14
	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>
	20
e4bd8bce PM	21	#ifdef CONFIG_NF_CT_ACCT
	22	static unsigned int
	23	seq_print_counters(struct seq_file *s,
	24	const struct ip_conntrack_counter *counter)
	25	{
	26	return seq_printf(s, "packets=%llu bytes=%llu ",
	27	(unsigned long long)counter->packets,
	28	(unsigned long long)counter->bytes);
	29	}
	30	#else
	31	#define seq_print_counters(x, y) 0
	32	#endif
	33
	34	struct ct_iter_state {
	35	unsigned int bucket;
	36	};
	37
f205c5e0	38	static struct hlist_node ct_get_first(struct seq_file seq)
e4bd8bce PM	39	{
	40	struct ct_iter_state *st = seq->private;
	41
	42	for (st->bucket = 0;
	43	st->bucket < nf_conntrack_htable_size;
	44	st->bucket++) {
f205c5e0 PM	45	if (!hlist_empty(&nf_conntrack_hash[st->bucket]))
f205c5e0 PM	46	return nf_conntrack_hash[st->bucket].first;
e4bd8bce PM	47	}
	48	return NULL;
	49	}
	50
f205c5e0 PM	51	static struct hlist_node ct_get_next(struct seq_file seq,
f205c5e0 PM	52	struct hlist_node *head)
e4bd8bce PM	53	{
	54	struct ct_iter_state *st = seq->private;
	55
	56	head = head->next;
f205c5e0	57	while (head == NULL) {
e4bd8bce PM	58	if (++st->bucket >= nf_conntrack_htable_size)
e4bd8bce PM	59	return NULL;
f205c5e0	60	head = nf_conntrack_hash[st->bucket].first;
e4bd8bce PM	61	}
	62	return head;
	63	}
	64
f205c5e0	65	static struct hlist_node ct_get_idx(struct seq_file seq, loff_t pos)
e4bd8bce	66	{
f205c5e0	67	struct hlist_node *head = ct_get_first(seq);
e4bd8bce PM	68
	69	if (head)
	70	while (pos && (head = ct_get_next(seq, head)))
	71	pos--;
	72	return pos ? NULL : head;
	73	}
	74
	75	static void ct_seq_start(struct seq_file seq, loff_t *pos)
	76	{
	77	read_lock_bh(&nf_conntrack_lock);
	78	return ct_get_idx(seq, *pos);
	79	}
	80
	81	static void ct_seq_next(struct seq_file s, void v, loff_t pos)
	82	{
	83	(*pos)++;
	84	return ct_get_next(s, v);
	85	}
	86
	87	static void ct_seq_stop(struct seq_file s, void v)
	88	{
	89	read_unlock_bh(&nf_conntrack_lock);
	90	}
	91
	92	static int ct_seq_show(struct seq_file s, void v)
	93	{
	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;
	98
	99	NF_CT_ASSERT(ct);
	100
	101	/* we only want to print DIR_ORIGINAL */
	102	if (NF_CT_DIRECTION(hash))
	103	return 0;
	104	if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num != AF_INET)
	105	return 0;
	106
	107	l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
	108	.tuple.src.l3num);
	109	NF_CT_ASSERT(l3proto);
	110	l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
	111	.tuple.src.l3num,
	112	ct->tuplehash[IP_CT_DIR_ORIGINAL]
	113	.tuple.dst.protonum);
	114	NF_CT_ASSERT(l4proto);
	115
	116	if (seq_printf(s, "%-8s %u %ld ",
	117	l4proto->name,
	118	ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
	119	timer_pending(&ct->timeout)
	120	? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
	121	return -ENOSPC;
	122
	123	if (l3proto->print_conntrack(s, ct))
	124	return -ENOSPC;
	125
	126	if (l4proto->print_conntrack(s, ct))
	127	return -ENOSPC;
	128
	129	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
	130	l3proto, l4proto))
	131	return -ENOSPC;
132
e905a9ed	133	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
e4bd8bce PM	134	return -ENOSPC;
	135
	136	if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
	137	if (seq_printf(s, "[UNREPLIED] "))
	138	return -ENOSPC;
	139
	140	if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
	141	l3proto, l4proto))
	142	return -ENOSPC;
	143
e905a9ed	144	if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
e4bd8bce PM	145	return -ENOSPC;
	146
	147	if (test_bit(IPS_ASSURED_BIT, &ct->status))
	148	if (seq_printf(s, "[ASSURED] "))
	149	return -ENOSPC;
	150
	151	#ifdef CONFIG_NF_CONNTRACK_MARK
	152	if (seq_printf(s, "mark=%u ", ct->mark))
	153	return -ENOSPC;
	154	#endif
	155
	156	#ifdef CONFIG_NF_CONNTRACK_SECMARK
	157	if (seq_printf(s, "secmark=%u ", ct->secmark))
	158	return -ENOSPC;
	159	#endif
	160
	161	if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
	162	return -ENOSPC;
	163
	164	return 0;
	165	}
	166
56b3d975	167	static const struct seq_operations ct_seq_ops = {
e4bd8bce PM	168	.start = ct_seq_start,
	169	.next = ct_seq_next,
	170	.stop = ct_seq_stop,
	171	.show = ct_seq_show
	172	};
	173
	174	static int ct_open(struct inode inode, struct file file)
	175	{
	176	struct seq_file *seq;
	177	struct ct_iter_state *st;
	178	int ret;
	179
dd00cc48	180	st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
e4bd8bce PM	181	if (st == NULL)
	182	return -ENOMEM;
	183	ret = seq_open(file, &ct_seq_ops);
	184	if (ret)
	185	goto out_free;
	186	seq = file->private_data;
	187	seq->private = st;
e4bd8bce PM	188	return ret;
	189	out_free:
	190	kfree(st);
	191	return ret;
	192	}
	193
9a32144e	194	static const struct file_operations ct_file_ops = {
e4bd8bce PM	195	.owner = THIS_MODULE,
	196	.open = ct_open,
	197	.read = seq_read,
	198	.llseek = seq_lseek,
	199	.release = seq_release_private,
	200	};
	201
	202	/* expects */
5d08ad44 PM	203	struct ct_expect_iter_state {
	204	unsigned int bucket;
	205	};
	206
	207	static struct hlist_node ct_expect_get_first(struct seq_file seq)
e4bd8bce	208	{
5d08ad44	209	struct ct_expect_iter_state *st = seq->private;
e4bd8bce	210
5d08ad44 PM	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;
	214	}
	215	return NULL;
	216	}
e4bd8bce	217
5d08ad44 PM	218	static struct hlist_node ct_expect_get_next(struct seq_file seq,
	219	struct hlist_node *head)
	220	{
	221	struct ct_expect_iter_state *st = seq->private;
e4bd8bce	222
5d08ad44 PM	223	head = head->next;
	224	while (head == NULL) {
	225	if (++st->bucket >= nf_ct_expect_hsize)
e4bd8bce	226	return NULL;
5d08ad44	227	head = nf_ct_expect_hash[st->bucket].first;
e4bd8bce	228	}
5d08ad44	229	return head;
e4bd8bce PM	230	}
e4bd8bce PM	231
5d08ad44	232	static struct hlist_node ct_expect_get_idx(struct seq_file seq, loff_t pos)
e4bd8bce	233	{
5d08ad44	234	struct hlist_node *head = ct_expect_get_first(seq);
e4bd8bce	235
5d08ad44 PM	236	if (head)
	237	while (pos && (head = ct_expect_get_next(seq, head)))
	238	pos--;
	239	return pos ? NULL : head;
	240	}
e4bd8bce	241
5d08ad44 PM	242	static void exp_seq_start(struct seq_file seq, loff_t *pos)
	243	{
	244	read_lock_bh(&nf_conntrack_lock);
	245	return ct_expect_get_idx(seq, *pos);
	246	}
e4bd8bce	247
5d08ad44 PM	248	static void exp_seq_next(struct seq_file seq, void v, loff_t pos)
	249	{
	250	(*pos)++;
	251	return ct_expect_get_next(seq, v);
e4bd8bce PM	252	}
e4bd8bce PM	253
5d08ad44	254	static void exp_seq_stop(struct seq_file seq, void v)
e4bd8bce PM	255	{
	256	read_unlock_bh(&nf_conntrack_lock);
	257	}
	258
	259	static int exp_seq_show(struct seq_file s, void v)
	260	{
5d08ad44 PM	261	struct nf_conntrack_expect *exp;
	262	struct hlist_node *n = v;
	263
	264	exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
e4bd8bce PM	265
	266	if (exp->tuple.src.l3num != AF_INET)
	267	return 0;
	268
	269	if (exp->timeout.function)
	270	seq_printf(s, "%ld ", timer_pending(&exp->timeout)
	271	? (long)(exp->timeout.expires - jiffies)/HZ : 0);
	272	else
	273	seq_printf(s, "- ");
	274
	275	seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
	276
	277	print_tuple(s, &exp->tuple,
	278	__nf_ct_l3proto_find(exp->tuple.src.l3num),
	279	__nf_ct_l4proto_find(exp->tuple.src.l3num,
e905a9ed	280	exp->tuple.dst.protonum));
e4bd8bce PM	281	return seq_putc(s, '\n');
	282	}
	283
56b3d975	284	static const struct seq_operations exp_seq_ops = {
e4bd8bce PM	285	.start = exp_seq_start,
	286	.next = exp_seq_next,
	287	.stop = exp_seq_stop,
	288	.show = exp_seq_show
	289	};
	290
	291	static int exp_open(struct inode inode, struct file file)
	292	{
5d08ad44 PM	293	struct seq_file *seq;
	294	struct ct_expect_iter_state *st;
	295	int ret;
	296
	297	st = kmalloc(sizeof(struct ct_expect_iter_state), GFP_KERNEL);
	298	if (st == NULL)
	299	return -ENOMEM;
	300	ret = seq_open(file, &exp_seq_ops);
	301	if (ret)
	302	goto out_free;
	303	seq = file->private_data;
	304	seq->private = st;
	305	memset(st, 0, sizeof(struct ct_expect_iter_state));
	306	return ret;
	307	out_free:
	308	kfree(st);
	309	return ret;
e4bd8bce PM	310	}
e4bd8bce PM	311
9a32144e	312	static const struct file_operations ip_exp_file_ops = {
e4bd8bce PM	313	.owner = THIS_MODULE,
	314	.open = exp_open,
	315	.read = seq_read,
	316	.llseek = seq_lseek,
5d08ad44	317	.release = seq_release_private,
e4bd8bce PM	318	};
	319
	320	static void ct_cpu_seq_start(struct seq_file seq, loff_t *pos)
	321	{
	322	int cpu;
	323
	324	if (*pos == 0)
	325	return SEQ_START_TOKEN;
	326
	327	for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
	328	if (!cpu_possible(cpu))
	329	continue;
	330	*pos = cpu+1;
	331	return &per_cpu(nf_conntrack_stat, cpu);
	332	}
	333
	334	return NULL;
	335	}
	336
	337	static void ct_cpu_seq_next(struct seq_file seq, void v, loff_t pos)
	338	{
	339	int cpu;
	340
	341	for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
	342	if (!cpu_possible(cpu))
	343	continue;
	344	*pos = cpu+1;
	345	return &per_cpu(nf_conntrack_stat, cpu);
	346	}
	347
	348	return NULL;
	349	}
	350
	351	static void ct_cpu_seq_stop(struct seq_file seq, void v)
	352	{
	353	}
	354
	355	static int ct_cpu_seq_show(struct seq_file seq, void v)
	356	{
	357	unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
	358	struct ip_conntrack_stat *st = v;
	359
	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");
	362	return 0;
	363	}
	364
	365	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
	366	"%08x %08x %08x %08x %08x %08x %08x %08x \n",
	367	nr_conntracks,
	368	st->searched,
	369	st->found,
	370	st->new,
	371	st->invalid,
	372	st->ignore,
	373	st->delete,
	374	st->delete_list,
	375	st->insert,
	376	st->insert_failed,
	377	st->drop,
	378	st->early_drop,
	379	st->error,
	380
	381	st->expect_new,
382	st->expect_create,
383	st->expect_delete
384	);
385	return 0;
386	}
387
56b3d975	388	static const struct seq_operations ct_cpu_seq_ops = {
e4bd8bce PM	389	.start = ct_cpu_seq_start,
	390	.next = ct_cpu_seq_next,
	391	.stop = ct_cpu_seq_stop,
	392	.show = ct_cpu_seq_show,
	393	};
	394
	395	static int ct_cpu_seq_open(struct inode inode, struct file file)
	396	{
	397	return seq_open(file, &ct_cpu_seq_ops);
	398	}
	399
9a32144e	400	static const struct file_operations ct_cpu_seq_fops = {
e4bd8bce PM	401	.owner = THIS_MODULE,
	402	.open = ct_cpu_seq_open,
	403	.read = seq_read,
	404	.llseek = seq_lseek,
	405	.release = seq_release_private,
	406	};
	407
	408	int __init nf_conntrack_ipv4_compat_init(void)
	409	{
	410	struct proc_dir_entry proc, proc_exp, *proc_stat;
	411
	412	proc = proc_net_fops_create("ip_conntrack", 0440, &ct_file_ops);
	413	if (!proc)
	414	goto err1;
	415
	416	proc_exp = proc_net_fops_create("ip_conntrack_expect", 0440,
	417	&ip_exp_file_ops);
	418	if (!proc_exp)
	419	goto err2;
	420
	421	proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, proc_net_stat);
	422	if (!proc_stat)
	423	goto err3;
	424
	425	proc_stat->proc_fops = &ct_cpu_seq_fops;
	426	proc_stat->owner = THIS_MODULE;
	427
	428	return 0;
	429
	430	err3:
	431	proc_net_remove("ip_conntrack_expect");
	432	err2:
	433	proc_net_remove("ip_conntrack");
	434	err1:
	435	return -ENOMEM;
	436	}
	437
	438	void __exit nf_conntrack_ipv4_compat_fini(void)
	439	{
	440	remove_proc_entry("ip_conntrack", proc_net_stat);
	441	proc_net_remove("ip_conntrack_expect");
	442	proc_net_remove("ip_conntrack");
	443	}