[mirror_ubuntu-jammy-kernel.git] / net / core / net-procfs.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/wext.h>

#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)

#define get_bucket(x) ((x) >> BUCKET_SPACE)
#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o))

static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos)
{
	struct net *net = seq_file_net(seq);
	struct net_device *dev;
	struct hlist_head *h;
	unsigned int count = 0, offset = get_offset(*pos);

	h = &net->dev_index_head[get_bucket(*pos)];
	hlist_for_each_entry_rcu(dev, h, index_hlist) {
		if (++count == offset)
			return dev;
	}

	return NULL;
}

static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos)
{
	struct net_device *dev;
	unsigned int bucket;

	do {
		dev = dev_from_same_bucket(seq, pos);
		if (dev)
			return dev;

		bucket = get_bucket(*pos) + 1;
		*pos = set_bucket_offset(bucket, 1);
	} while (bucket < NETDEV_HASHENTRIES);

	return NULL;
}

/*
 *	This is invoked by the /proc filesystem handler to display a device
 *	in detail.
 */
static void *dev_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(RCU)
{
	rcu_read_lock();
	if (!*pos)
		return SEQ_START_TOKEN;

	if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
		return NULL;

	return dev_from_bucket(seq, pos);
}

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

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

static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
{
	struct rtnl_link_stats64 temp;
	const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);

	seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
		   "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
		   dev->name, stats->rx_bytes, stats->rx_packets,
		   stats->rx_errors,
		   stats->rx_dropped + stats->rx_missed_errors,
		   stats->rx_fifo_errors,
		   stats->rx_length_errors + stats->rx_over_errors +
		    stats->rx_crc_errors + stats->rx_frame_errors,
		   stats->rx_compressed, stats->multicast,
		   stats->tx_bytes, stats->tx_packets,
		   stats->tx_errors, stats->tx_dropped,
		   stats->tx_fifo_errors, stats->collisions,
		   stats->tx_carrier_errors +
		    stats->tx_aborted_errors +
		    stats->tx_window_errors +
		    stats->tx_heartbeat_errors,
		   stats->tx_compressed);
}

/*
 *	Called from the PROCfs module. This now uses the new arbitrary sized
 *	/proc/net interface to create /proc/net/dev
 */
static int dev_seq_show(struct seq_file *seq, void *v)
{
	if (v == SEQ_START_TOKEN)
		seq_puts(seq, "Inter-|   Receive                            "
			      "                    |  Transmit\n"
			      " face |bytes    packets errs drop fifo frame "
			      "compressed multicast|bytes    packets errs "
			      "drop fifo colls carrier compressed\n");
	else
		dev_seq_printf_stats(seq, v);
	return 0;
}

static u32 softnet_backlog_len(struct softnet_data *sd)
{
	return skb_queue_len_lockless(&sd->input_pkt_queue) +
	       skb_queue_len_lockless(&sd->process_queue);
}

static struct softnet_data *softnet_get_online(loff_t *pos)
{
	struct softnet_data *sd = NULL;

	while (*pos < nr_cpu_ids)
		if (cpu_online(*pos)) {
			sd = &per_cpu(softnet_data, *pos);
			break;
		} else
			++*pos;
	return sd;
}

static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
{
	return softnet_get_online(pos);
}

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

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

static int softnet_seq_show(struct seq_file *seq, void *v)
{
	struct softnet_data *sd = v;
	unsigned int flow_limit_count = 0;

#ifdef CONFIG_NET_FLOW_LIMIT
	struct sd_flow_limit *fl;

	rcu_read_lock();
	fl = rcu_dereference(sd->flow_limit);
	if (fl)
		flow_limit_count = fl->count;
	rcu_read_unlock();
#endif

	/* the index is the CPU id owing this sd. Since offline CPUs are not
	 * displayed, it would be othrwise not trivial for the user-space
	 * mapping the data a specific CPU
	 */
	seq_printf(seq,
		   "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
		   sd->processed, sd->dropped, sd->time_squeeze, 0,
		   0, 0, 0, 0, /* was fastroute */
		   0,	/* was cpu_collision */
		   sd->received_rps, flow_limit_count,
		   softnet_backlog_len(sd), (int)seq->index);
	return 0;
}

static const struct seq_operations dev_seq_ops = {
	.start = dev_seq_start,
	.next  = dev_seq_next,
	.stop  = dev_seq_stop,
	.show  = dev_seq_show,
};

static const struct seq_operations softnet_seq_ops = {
	.start = softnet_seq_start,
	.next  = softnet_seq_next,
	.stop  = softnet_seq_stop,
	.show  = softnet_seq_show,
};

static void *ptype_get_idx(struct seq_file *seq, loff_t pos)
{
	struct list_head *ptype_list = NULL;
	struct packet_type *pt = NULL;
	struct net_device *dev;
	loff_t i = 0;
	int t;

	for_each_netdev_rcu(seq_file_net(seq), dev) {
		ptype_list = &dev->ptype_all;
		list_for_each_entry_rcu(pt, ptype_list, list) {
			if (i == pos)
				return pt;
			++i;
		}
	}

	list_for_each_entry_rcu(pt, &ptype_all, list) {
		if (i == pos)
			return pt;
		++i;
	}

	for (t = 0; t < PTYPE_HASH_SIZE; t++) {
		list_for_each_entry_rcu(pt, &ptype_base[t], list) {
			if (i == pos)
				return pt;
			++i;
		}
	}
	return NULL;
}

static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(RCU)
{
	rcu_read_lock();
	return *pos ? ptype_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}

static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct net_device *dev;
	struct packet_type *pt;
	struct list_head *nxt;
	int hash;

	++*pos;
	if (v == SEQ_START_TOKEN)
		return ptype_get_idx(seq, 0);

	pt = v;
	nxt = pt->list.next;
	if (pt->dev) {
		if (nxt != &pt->dev->ptype_all)
			goto found;

		dev = pt->dev;
		for_each_netdev_continue_rcu(seq_file_net(seq), dev) {
			if (!list_empty(&dev->ptype_all)) {
				nxt = dev->ptype_all.next;
				goto found;
			}
		}

		nxt = ptype_all.next;
		goto ptype_all;
	}

	if (pt->type == htons(ETH_P_ALL)) {
ptype_all:
		if (nxt != &ptype_all)
			goto found;
		hash = 0;
		nxt = ptype_base[0].next;
	} else
		hash = ntohs(pt->type) & PTYPE_HASH_MASK;

	while (nxt == &ptype_base[hash]) {
		if (++hash >= PTYPE_HASH_SIZE)
			return NULL;
		nxt = ptype_base[hash].next;
	}
found:
	return list_entry(nxt, struct packet_type, list);
}

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

static int ptype_seq_show(struct seq_file *seq, void *v)
{
	struct packet_type *pt = v;

	if (v == SEQ_START_TOKEN)
		seq_puts(seq, "Type Device      Function\n");
	else if ((!pt->af_packet_net || net_eq(pt->af_packet_net, seq_file_net(seq))) &&
		 (!pt->dev || net_eq(dev_net(pt->dev), seq_file_net(seq)))) {
		if (pt->type == htons(ETH_P_ALL))
			seq_puts(seq, "ALL ");
		else
			seq_printf(seq, "%04x", ntohs(pt->type));

		seq_printf(seq, " %-8s %ps\n",
			   pt->dev ? pt->dev->name : "", pt->func);
	}

	return 0;
}

static const struct seq_operations ptype_seq_ops = {
	.start = ptype_seq_start,
	.next  = ptype_seq_next,
	.stop  = ptype_seq_stop,
	.show  = ptype_seq_show,
};

static int __net_init dev_proc_net_init(struct net *net)
{
	int rc = -ENOMEM;

	if (!proc_create_net("dev", 0444, net->proc_net, &dev_seq_ops,
			sizeof(struct seq_net_private)))
		goto out;
	if (!proc_create_seq("softnet_stat", 0444, net->proc_net,
			 &softnet_seq_ops))
		goto out_dev;
	if (!proc_create_net("ptype", 0444, net->proc_net, &ptype_seq_ops,
			sizeof(struct seq_net_private)))
		goto out_softnet;

	if (wext_proc_init(net))
		goto out_ptype;
	rc = 0;
out:
	return rc;
out_ptype:
	remove_proc_entry("ptype", net->proc_net);
out_softnet:
	remove_proc_entry("softnet_stat", net->proc_net);
out_dev:
	remove_proc_entry("dev", net->proc_net);
	goto out;
}

static void __net_exit dev_proc_net_exit(struct net *net)
{
	wext_proc_exit(net);

	remove_proc_entry("ptype", net->proc_net);
	remove_proc_entry("softnet_stat", net->proc_net);
	remove_proc_entry("dev", net->proc_net);
}

static struct pernet_operations __net_initdata dev_proc_ops = {
	.init = dev_proc_net_init,
	.exit = dev_proc_net_exit,
};

static int dev_mc_seq_show(struct seq_file *seq, void *v)
{
	struct netdev_hw_addr *ha;
	struct net_device *dev = v;

	if (v == SEQ_START_TOKEN)
		return 0;

	netif_addr_lock_bh(dev);
	netdev_for_each_mc_addr(ha, dev) {
		seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
			   dev->ifindex, dev->name,
			   ha->refcount, ha->global_use,
			   (int)dev->addr_len, ha->addr);
	}
	netif_addr_unlock_bh(dev);
	return 0;
}

static const struct seq_operations dev_mc_seq_ops = {
	.start = dev_seq_start,
	.next  = dev_seq_next,
	.stop  = dev_seq_stop,
	.show  = dev_mc_seq_show,
};

static int __net_init dev_mc_net_init(struct net *net)
{
	if (!proc_create_net("dev_mcast", 0, net->proc_net, &dev_mc_seq_ops,
			sizeof(struct seq_net_private)))
		return -ENOMEM;
	return 0;
}

static void __net_exit dev_mc_net_exit(struct net *net)
{
	remove_proc_entry("dev_mcast", net->proc_net);
}

static struct pernet_operations __net_initdata dev_mc_net_ops = {
	.init = dev_mc_net_init,
	.exit = dev_mc_net_exit,
};

int __init dev_proc_init(void)
{
	int ret = register_pernet_subsys(&dev_proc_ops);
	if (!ret)
		return register_pernet_subsys(&dev_mc_net_ops);
	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
900ff8c6 CW	2	#include <linux/netdevice.h>
	3	#include <linux/proc_fs.h>
	4	#include <linux/seq_file.h>
	5	#include <net/wext.h>
	6
	7	#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
	8
	9	#define get_bucket(x) ((x) >> BUCKET_SPACE)
	10	#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
	11	#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE \| (o))
	12
900ff8c6 CW	13	static inline struct net_device dev_from_same_bucket(struct seq_file seq, loff_t *pos)
	14	{
	15	struct net *net = seq_file_net(seq);
	16	struct net_device *dev;
900ff8c6 CW	17	struct hlist_head *h;
	18	unsigned int count = 0, offset = get_offset(*pos);
	19
6958c97a JP	20	h = &net->dev_index_head[get_bucket(*pos)];
6958c97a JP	21	hlist_for_each_entry_rcu(dev, h, index_hlist) {
900ff8c6 CW	22	if (++count == offset)
	23	return dev;
	24	}
	25
	26	return NULL;
	27	}
	28
	29	static inline struct net_device dev_from_bucket(struct seq_file seq, loff_t *pos)
	30	{
	31	struct net_device *dev;
	32	unsigned int bucket;
	33
	34	do {
	35	dev = dev_from_same_bucket(seq, pos);
	36	if (dev)
	37	return dev;
	38
	39	bucket = get_bucket(*pos) + 1;
	40	*pos = set_bucket_offset(bucket, 1);
	41	} while (bucket < NETDEV_HASHENTRIES);
	42
	43	return NULL;
	44	}
	45
	46	/*
	47	* This is invoked by the /proc filesystem handler to display a device
	48	* in detail.
	49	*/
	50	static void dev_seq_start(struct seq_file seq, loff_t *pos)
	51	__acquires(RCU)
	52	{
	53	rcu_read_lock();
	54	if (!*pos)
	55	return SEQ_START_TOKEN;
	56
	57	if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
	58	return NULL;
	59
	60	return dev_from_bucket(seq, pos);
	61	}
	62
	63	static void dev_seq_next(struct seq_file seq, void v, loff_t pos)
	64	{
	65	++*pos;
	66	return dev_from_bucket(seq, pos);
	67	}
	68
	69	static void dev_seq_stop(struct seq_file seq, void v)
	70	__releases(RCU)
	71	{
	72	rcu_read_unlock();
	73	}
	74
	75	static void dev_seq_printf_stats(struct seq_file seq, struct net_device dev)
	76	{
	77	struct rtnl_link_stats64 temp;
	78	const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
	79
1f922d9e VO	80	seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
1f922d9e VO	81	"%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
900ff8c6 CW	82	dev->name, stats->rx_bytes, stats->rx_packets,
	83	stats->rx_errors,
	84	stats->rx_dropped + stats->rx_missed_errors,
	85	stats->rx_fifo_errors,
	86	stats->rx_length_errors + stats->rx_over_errors +
	87	stats->rx_crc_errors + stats->rx_frame_errors,
	88	stats->rx_compressed, stats->multicast,
	89	stats->tx_bytes, stats->tx_packets,
	90	stats->tx_errors, stats->tx_dropped,
	91	stats->tx_fifo_errors, stats->collisions,
	92	stats->tx_carrier_errors +
	93	stats->tx_aborted_errors +
	94	stats->tx_window_errors +
	95	stats->tx_heartbeat_errors,
	96	stats->tx_compressed);
	97	}
	98
	99	/*
	100	* Called from the PROCfs module. This now uses the new arbitrary sized
	101	* /proc/net interface to create /proc/net/dev
	102	*/
	103	static int dev_seq_show(struct seq_file seq, void v)
	104	{
	105	if (v == SEQ_START_TOKEN)
1f922d9e VO	106	seq_puts(seq, "Inter-\| Receive "
	107	" \| Transmit\n"
	108	" face \|bytes packets errs drop fifo frame "
	109	"compressed multicast\|bytes packets errs "
	110	"drop fifo colls carrier compressed\n");
900ff8c6 CW	111	else
	112	dev_seq_printf_stats(seq, v);
	113	return 0;
	114	}
	115
7d58e655 PA	116	static u32 softnet_backlog_len(struct softnet_data *sd)
	117	{
	118	return skb_queue_len_lockless(&sd->input_pkt_queue) +
	119	skb_queue_len_lockless(&sd->process_queue);
	120	}
	121
900ff8c6 CW	122	static struct softnet_data softnet_get_online(loff_t pos)
	123	{
	124	struct softnet_data *sd = NULL;
	125
	126	while (*pos < nr_cpu_ids)
	127	if (cpu_online(*pos)) {
	128	sd = &per_cpu(softnet_data, *pos);
	129	break;
	130	} else
	131	++*pos;
	132	return sd;
	133	}
	134
	135	static void softnet_seq_start(struct seq_file seq, loff_t *pos)
	136	{
	137	return softnet_get_online(pos);
	138	}
	139
	140	static void softnet_seq_next(struct seq_file seq, void v, loff_t pos)
	141	{
	142	++*pos;
	143	return softnet_get_online(pos);
	144	}
	145
	146	static void softnet_seq_stop(struct seq_file seq, void v)
	147	{
	148	}
	149
	150	static int softnet_seq_show(struct seq_file seq, void v)
	151	{
	152	struct softnet_data *sd = v;
99bbc707	153	unsigned int flow_limit_count = 0;
900ff8c6	154
99bbc707 WB	155	#ifdef CONFIG_NET_FLOW_LIMIT
	156	struct sd_flow_limit *fl;
	157
	158	rcu_read_lock();
	159	fl = rcu_dereference(sd->flow_limit);
	160	if (fl)
	161	flow_limit_count = fl->count;
	162	rcu_read_unlock();
	163	#endif
	164
7d58e655 PA	165	/* the index is the CPU id owing this sd. Since offline CPUs are not
	166	* displayed, it would be othrwise not trivial for the user-space
	167	* mapping the data a specific CPU
	168	*/
99bbc707	169	seq_printf(seq,
7d58e655	170	"%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
900ff8c6 CW	171	sd->processed, sd->dropped, sd->time_squeeze, 0,
900ff8c6 CW	172	0, 0, 0, 0, /* was fastroute */
f0cdf76c	173	0, /* was cpu_collision */
7d58e655 PA	174	sd->received_rps, flow_limit_count,
7d58e655 PA	175	softnet_backlog_len(sd), (int)seq->index);
900ff8c6 CW	176	return 0;
	177	}
	178
	179	static const struct seq_operations dev_seq_ops = {
	180	.start = dev_seq_start,
	181	.next = dev_seq_next,
	182	.stop = dev_seq_stop,
	183	.show = dev_seq_show,
	184	};
	185
900ff8c6 CW	186	static const struct seq_operations softnet_seq_ops = {
	187	.start = softnet_seq_start,
	188	.next = softnet_seq_next,
	189	.stop = softnet_seq_stop,
	190	.show = softnet_seq_show,
	191	};
	192
1f6b9306	193	static void ptype_get_idx(struct seq_file seq, loff_t pos)
900ff8c6	194	{
1f6b9306	195	struct list_head *ptype_list = NULL;
900ff8c6	196	struct packet_type *pt = NULL;
1f6b9306	197	struct net_device *dev;
900ff8c6 CW	198	loff_t i = 0;
	199	int t;
	200
1f6b9306 JW	201	for_each_netdev_rcu(seq_file_net(seq), dev) {
	202	ptype_list = &dev->ptype_all;
	203	list_for_each_entry_rcu(pt, ptype_list, list) {
	204	if (i == pos)
	205	return pt;
	206	++i;
	207	}
	208	}
	209
900ff8c6 CW	210	list_for_each_entry_rcu(pt, &ptype_all, list) {
	211	if (i == pos)
	212	return pt;
	213	++i;
	214	}
	215
	216	for (t = 0; t < PTYPE_HASH_SIZE; t++) {
	217	list_for_each_entry_rcu(pt, &ptype_base[t], list) {
	218	if (i == pos)
	219	return pt;
	220	++i;
	221	}
	222	}
	223	return NULL;
	224	}
	225
	226	static void ptype_seq_start(struct seq_file seq, loff_t *pos)
	227	__acquires(RCU)
	228	{
	229	rcu_read_lock();
1f6b9306	230	return pos ? ptype_get_idx(seq, pos - 1) : SEQ_START_TOKEN;
900ff8c6 CW	231	}
	232
	233	static void ptype_seq_next(struct seq_file seq, void v, loff_t pos)
	234	{
1f6b9306	235	struct net_device *dev;
900ff8c6 CW	236	struct packet_type *pt;
	237	struct list_head *nxt;
	238	int hash;
	239
	240	++*pos;
	241	if (v == SEQ_START_TOKEN)
1f6b9306	242	return ptype_get_idx(seq, 0);
900ff8c6 CW	243
	244	pt = v;
	245	nxt = pt->list.next;
1f6b9306 JW	246	if (pt->dev) {
	247	if (nxt != &pt->dev->ptype_all)
	248	goto found;
	249
	250	dev = pt->dev;
	251	for_each_netdev_continue_rcu(seq_file_net(seq), dev) {
	252	if (!list_empty(&dev->ptype_all)) {
	253	nxt = dev->ptype_all.next;
	254	goto found;
	255	}
	256	}
	257
	258	nxt = ptype_all.next;
	259	goto ptype_all;
	260	}
	261
900ff8c6	262	if (pt->type == htons(ETH_P_ALL)) {
1f6b9306	263	ptype_all:
900ff8c6 CW	264	if (nxt != &ptype_all)
	265	goto found;
	266	hash = 0;
	267	nxt = ptype_base[0].next;
	268	} else
	269	hash = ntohs(pt->type) & PTYPE_HASH_MASK;
	270
	271	while (nxt == &ptype_base[hash]) {
	272	if (++hash >= PTYPE_HASH_SIZE)
	273	return NULL;
	274	nxt = ptype_base[hash].next;
	275	}
	276	found:
	277	return list_entry(nxt, struct packet_type, list);
	278	}
	279
	280	static void ptype_seq_stop(struct seq_file seq, void v)
	281	__releases(RCU)
	282	{
	283	rcu_read_unlock();
	284	}
	285
	286	static int ptype_seq_show(struct seq_file seq, void v)
	287	{
	288	struct packet_type *pt = v;
	289
	290	if (v == SEQ_START_TOKEN)
1f922d9e	291	seq_puts(seq, "Type Device Function\n");
c765082f CL	292	else if ((!pt->af_packet_net \|\| net_eq(pt->af_packet_net, seq_file_net(seq))) &&
c765082f CL	293	(!pt->dev \|\| net_eq(dev_net(pt->dev), seq_file_net(seq)))) {
900ff8c6 CW	294	if (pt->type == htons(ETH_P_ALL))
	295	seq_puts(seq, "ALL ");
	296	else
	297	seq_printf(seq, "%04x", ntohs(pt->type));
	298
1f922d9e	299	seq_printf(seq, " %-8s %ps\n",
900ff8c6 CW	300	pt->dev ? pt->dev->name : "", pt->func);
	301	}
	302
	303	return 0;
	304	}
	305
	306	static const struct seq_operations ptype_seq_ops = {
	307	.start = ptype_seq_start,
	308	.next = ptype_seq_next,
	309	.stop = ptype_seq_stop,
	310	.show = ptype_seq_show,
	311	};
	312
900ff8c6 CW	313	static int __net_init dev_proc_net_init(struct net *net)
	314	{
	315	int rc = -ENOMEM;
	316
c3506372 CH	317	if (!proc_create_net("dev", 0444, net->proc_net, &dev_seq_ops,
c3506372 CH	318	sizeof(struct seq_net_private)))
900ff8c6	319	goto out;
fddda2b7 CH	320	if (!proc_create_seq("softnet_stat", 0444, net->proc_net,
fddda2b7 CH	321	&softnet_seq_ops))
900ff8c6	322	goto out_dev;
c3506372 CH	323	if (!proc_create_net("ptype", 0444, net->proc_net, &ptype_seq_ops,
c3506372 CH	324	sizeof(struct seq_net_private)))
900ff8c6 CW	325	goto out_softnet;
	326
	327	if (wext_proc_init(net))
	328	goto out_ptype;
	329	rc = 0;
	330	out:
	331	return rc;
	332	out_ptype:
	333	remove_proc_entry("ptype", net->proc_net);
	334	out_softnet:
	335	remove_proc_entry("softnet_stat", net->proc_net);
	336	out_dev:
	337	remove_proc_entry("dev", net->proc_net);
	338	goto out;
	339	}
	340
	341	static void __net_exit dev_proc_net_exit(struct net *net)
	342	{
	343	wext_proc_exit(net);
	344
	345	remove_proc_entry("ptype", net->proc_net);
	346	remove_proc_entry("softnet_stat", net->proc_net);
	347	remove_proc_entry("dev", net->proc_net);
	348	}
	349
	350	static struct pernet_operations __net_initdata dev_proc_ops = {
	351	.init = dev_proc_net_init,
	352	.exit = dev_proc_net_exit,
	353	};
	354
900ff8c6 CW	355	static int dev_mc_seq_show(struct seq_file seq, void v)
	356	{
	357	struct netdev_hw_addr *ha;
	358	struct net_device *dev = v;
	359
1f922d9e	360	if (v == SEQ_START_TOKEN)
900ff8c6 CW	361	return 0;
	362
	363	netif_addr_lock_bh(dev);
	364	netdev_for_each_mc_addr(ha, dev) {
1f922d9e	365	seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
fbd0ac60 JP	366	dev->ifindex, dev->name,
	367	ha->refcount, ha->global_use,
	368	(int)dev->addr_len, ha->addr);
900ff8c6 CW	369	}
	370	netif_addr_unlock_bh(dev);
	371	return 0;
	372	}
	373
	374	static const struct seq_operations dev_mc_seq_ops = {
	375	.start = dev_seq_start,
	376	.next = dev_seq_next,
	377	.stop = dev_seq_stop,
	378	.show = dev_mc_seq_show,
	379	};
	380
900ff8c6 CW	381	static int __net_init dev_mc_net_init(struct net *net)
900ff8c6 CW	382	{
c3506372 CH	383	if (!proc_create_net("dev_mcast", 0, net->proc_net, &dev_mc_seq_ops,
c3506372 CH	384	sizeof(struct seq_net_private)))
900ff8c6 CW	385	return -ENOMEM;
	386	return 0;
	387	}
	388
	389	static void __net_exit dev_mc_net_exit(struct net *net)
	390	{
	391	remove_proc_entry("dev_mcast", net->proc_net);
	392	}
	393
	394	static struct pernet_operations __net_initdata dev_mc_net_ops = {
	395	.init = dev_mc_net_init,
	396	.exit = dev_mc_net_exit,
	397	};
	398
cd061574	399	int __init dev_proc_init(void)
900ff8c6	400	{
cd061574 CW	401	int ret = register_pernet_subsys(&dev_proc_ops);
	402	if (!ret)
	403	return register_pernet_subsys(&dev_mc_net_ops);
	404	return ret;
900ff8c6	405	}