[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / core / net-procfs.c

#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))

extern struct list_head ptype_all __read_mostly;
extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;

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_name_head[get_bucket(*pos)];
	hlist_for_each_entry_rcu(dev, h, name_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 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;

	seq_printf(seq, "%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 */
		   sd->cpu_collision, sd->received_rps);
	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 int dev_seq_open(struct inode *inode, struct file *file)
{
	return seq_open_net(inode, file, &dev_seq_ops,
			    sizeof(struct seq_net_private));
}

static const struct file_operations dev_seq_fops = {
	.owner	 = THIS_MODULE,
	.open    = dev_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_net,
};

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 int softnet_seq_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &softnet_seq_ops);
}

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

static void *ptype_get_idx(loff_t pos)
{
	struct packet_type *pt = NULL;
	loff_t i = 0;
	int t;

	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(*pos - 1) : SEQ_START_TOKEN;
}

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

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

	pt = v;
	nxt = pt->list.next;
	if (pt->type == htons(ETH_P_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->dev == NULL || 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 %pF\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 ptype_seq_open(struct inode *inode, struct file *file)
{
	return seq_open_net(inode, file, &ptype_seq_ops,
			sizeof(struct seq_net_private));
}

static const struct file_operations ptype_seq_fops = {
	.owner	 = THIS_MODULE,
	.open    = ptype_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_net,
};


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

	if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
		goto out;
	if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
			 &softnet_seq_fops))
		goto out_dev;
	if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
		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) {
		int i;

		seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
			   dev->name, ha->refcount, ha->global_use);

		for (i = 0; i < dev->addr_len; i++)
			seq_printf(seq, "%02x", ha->addr[i]);

		seq_putc(seq, '\n');
	}
	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 dev_mc_seq_open(struct inode *inode, struct file *file)
{
	return seq_open_net(inode, file, &dev_mc_seq_ops,
			    sizeof(struct seq_net_private));
}

static const struct file_operations dev_mc_seq_fops = {
	.owner	 = THIS_MODULE,
	.open    = dev_mc_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release_net,
};

static int __net_init dev_mc_net_init(struct net *net)
{
	if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
		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
900ff8c6 CW	1	#include <linux/netdevice.h>
	2	#include <linux/proc_fs.h>
	3	#include <linux/seq_file.h>
	4	#include <net/wext.h>
	5
	6	#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
	7
	8	#define get_bucket(x) ((x) >> BUCKET_SPACE)
	9	#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
	10	#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE \| (o))
	11
	12	extern struct list_head ptype_all __read_mostly;
	13	extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
	14
	15	static inline struct net_device dev_from_same_bucket(struct seq_file seq, loff_t *pos)
	16	{
	17	struct net *net = seq_file_net(seq);
	18	struct net_device *dev;
900ff8c6 CW	19	struct hlist_head *h;
	20	unsigned int count = 0, offset = get_offset(*pos);
	21
	22	h = &net->dev_name_head[get_bucket(*pos)];
b67bfe0d	23	hlist_for_each_entry_rcu(dev, h, name_hlist) {
900ff8c6 CW	24	if (++count == offset)
	25	return dev;
	26	}
	27
	28	return NULL;
	29	}
	30
	31	static inline struct net_device dev_from_bucket(struct seq_file seq, loff_t *pos)
	32	{
	33	struct net_device *dev;
	34	unsigned int bucket;
	35
	36	do {
	37	dev = dev_from_same_bucket(seq, pos);
	38	if (dev)
	39	return dev;
	40
	41	bucket = get_bucket(*pos) + 1;
	42	*pos = set_bucket_offset(bucket, 1);
	43	} while (bucket < NETDEV_HASHENTRIES);
	44
	45	return NULL;
	46	}
	47
	48	/*
	49	* This is invoked by the /proc filesystem handler to display a device
	50	* in detail.
	51	*/
	52	static void dev_seq_start(struct seq_file seq, loff_t *pos)
	53	__acquires(RCU)
	54	{
	55	rcu_read_lock();
	56	if (!*pos)
	57	return SEQ_START_TOKEN;
	58
	59	if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
	60	return NULL;
	61
	62	return dev_from_bucket(seq, pos);
	63	}
	64
	65	static void dev_seq_next(struct seq_file seq, void v, loff_t pos)
	66	{
	67	++*pos;
	68	return dev_from_bucket(seq, pos);
	69	}
	70
	71	static void dev_seq_stop(struct seq_file seq, void v)
	72	__releases(RCU)
	73	{
	74	rcu_read_unlock();
	75	}
	76
	77	static void dev_seq_printf_stats(struct seq_file seq, struct net_device dev)
	78	{
	79	struct rtnl_link_stats64 temp;
	80	const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
	81
	82	seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
	83	"%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
	84	dev->name, stats->rx_bytes, stats->rx_packets,
	85	stats->rx_errors,
	86	stats->rx_dropped + stats->rx_missed_errors,
	87	stats->rx_fifo_errors,
88	stats->rx_length_errors + stats->rx_over_errors +
89	stats->rx_crc_errors + stats->rx_frame_errors,
90	stats->rx_compressed, stats->multicast,
91	stats->tx_bytes, stats->tx_packets,
92	stats->tx_errors, stats->tx_dropped,
93	stats->tx_fifo_errors, stats->collisions,
94	stats->tx_carrier_errors +
95	stats->tx_aborted_errors +
96	stats->tx_window_errors +
97	stats->tx_heartbeat_errors,
98	stats->tx_compressed);
99	}
100
101	/*
102	* Called from the PROCfs module. This now uses the new arbitrary sized
103	* /proc/net interface to create /proc/net/dev
104	*/
105	static int dev_seq_show(struct seq_file seq, void v)
106	{
107	if (v == SEQ_START_TOKEN)
108	seq_puts(seq, "Inter-\| Receive "
109	" \| Transmit\n"
110	" face \|bytes packets errs drop fifo frame "
111	"compressed multicast\|bytes packets errs "
112	"drop fifo colls carrier compressed\n");
113	else
114	dev_seq_printf_stats(seq, v);
115	return 0;
116	}
117
118	static struct softnet_data softnet_get_online(loff_t pos)
119	{
120	struct softnet_data *sd = NULL;
121
122	while (*pos < nr_cpu_ids)
123	if (cpu_online(*pos)) {
124	sd = &per_cpu(softnet_data, *pos);
125	break;
126	} else
127	++*pos;
128	return sd;
129	}
130
131	static void softnet_seq_start(struct seq_file seq, loff_t *pos)
132	{
133	return softnet_get_online(pos);
134	}
135
136	static void softnet_seq_next(struct seq_file seq, void v, loff_t pos)
137	{
138	++*pos;
139	return softnet_get_online(pos);
140	}
141
142	static void softnet_seq_stop(struct seq_file seq, void v)
143	{
144	}
145
146	static int softnet_seq_show(struct seq_file seq, void v)
147	{
148	struct softnet_data *sd = v;
149
150	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
151	sd->processed, sd->dropped, sd->time_squeeze, 0,
152	0, 0, 0, 0, /* was fastroute */
153	sd->cpu_collision, sd->received_rps);
154	return 0;
155	}
156
157	static const struct seq_operations dev_seq_ops = {
158	.start = dev_seq_start,
159	.next = dev_seq_next,
160	.stop = dev_seq_stop,
161	.show = dev_seq_show,
162	};
163
164	static int dev_seq_open(struct inode inode, struct file file)
165	{
166	return seq_open_net(inode, file, &dev_seq_ops,
167	sizeof(struct seq_net_private));
168	}
169
170	static const struct file_operations dev_seq_fops = {
171	.owner = THIS_MODULE,
172	.open = dev_seq_open,
173	.read = seq_read,
174	.llseek = seq_lseek,
175	.release = seq_release_net,
176	};
177
178	static const struct seq_operations softnet_seq_ops = {
179	.start = softnet_seq_start,
180	.next = softnet_seq_next,
181	.stop = softnet_seq_stop,
182	.show = softnet_seq_show,
183	};
184
185	static int softnet_seq_open(struct inode inode, struct file file)
186	{
187	return seq_open(file, &softnet_seq_ops);
188	}
189
190	static const struct file_operations softnet_seq_fops = {
191	.owner = THIS_MODULE,
192	.open = softnet_seq_open,
193	.read = seq_read,
194	.llseek = seq_lseek,
195	.release = seq_release,
196	};
197
198	static void *ptype_get_idx(loff_t pos)
199	{
200	struct packet_type *pt = NULL;
201	loff_t i = 0;
202	int t;
203
204	list_for_each_entry_rcu(pt, &ptype_all, list) {
205	if (i == pos)
206	return pt;
207	++i;
208	}
209
210	for (t = 0; t < PTYPE_HASH_SIZE; t++) {
211	list_for_each_entry_rcu(pt, &ptype_base[t], list) {
212	if (i == pos)
213	return pt;
214	++i;
215	}
216	}
217	return NULL;
218	}
219
220	static void ptype_seq_start(struct seq_file seq, loff_t *pos)
221	__acquires(RCU)
222	{
223	rcu_read_lock();
224	return pos ? ptype_get_idx(pos - 1) : SEQ_START_TOKEN;
225	}
226
227	static void ptype_seq_next(struct seq_file seq, void v, loff_t pos)
228	{
229	struct packet_type *pt;
230	struct list_head *nxt;
231	int hash;
232
233	++*pos;
234	if (v == SEQ_START_TOKEN)
235	return ptype_get_idx(0);
236
237	pt = v;
238	nxt = pt->list.next;
239	if (pt->type == htons(ETH_P_ALL)) {
240	if (nxt != &ptype_all)
241	goto found;
242	hash = 0;
243	nxt = ptype_base[0].next;
244	} else
245	hash = ntohs(pt->type) & PTYPE_HASH_MASK;
246
247	while (nxt == &ptype_base[hash]) {
248	if (++hash >= PTYPE_HASH_SIZE)
249	return NULL;
250	nxt = ptype_base[hash].next;
251	}
252	found:
253	return list_entry(nxt, struct packet_type, list);
254	}
255
256	static void ptype_seq_stop(struct seq_file seq, void v)
257	__releases(RCU)
258	{
259	rcu_read_unlock();
260	}
261
262	static int ptype_seq_show(struct seq_file seq, void v)
263	{
264	struct packet_type *pt = v;
265
266	if (v == SEQ_START_TOKEN)
267	seq_puts(seq, "Type Device Function\n");
268	else if (pt->dev == NULL \|\| dev_net(pt->dev) == seq_file_net(seq)) {
269	if (pt->type == htons(ETH_P_ALL))
270	seq_puts(seq, "ALL ");
271	else
272	seq_printf(seq, "%04x", ntohs(pt->type));
273
274	seq_printf(seq, " %-8s %pF\n",
275	pt->dev ? pt->dev->name : "", pt->func);
276	}
277
278	return 0;
279	}
280
281	static const struct seq_operations ptype_seq_ops = {
282	.start = ptype_seq_start,
283	.next = ptype_seq_next,
284	.stop = ptype_seq_stop,
285	.show = ptype_seq_show,
286	};
287
288	static int ptype_seq_open(struct inode inode, struct file file)
289	{
290	return seq_open_net(inode, file, &ptype_seq_ops,
291	sizeof(struct seq_net_private));
292	}
293
294	static const struct file_operations ptype_seq_fops = {
295	.owner = THIS_MODULE,
296	.open = ptype_seq_open,
297	.read = seq_read,
298	.llseek = seq_lseek,
299	.release = seq_release_net,
300	};
301
302
303	static int __net_init dev_proc_net_init(struct net *net)
304	{
305	int rc = -ENOMEM;
306
307	if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
308	goto out;
309	if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
310	&softnet_seq_fops))
311	goto out_dev;
312	if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
313	goto out_softnet;
314
315	if (wext_proc_init(net))
316	goto out_ptype;
317	rc = 0;
318	out:
319	return rc;
320	out_ptype:
321	remove_proc_entry("ptype", net->proc_net);
322	out_softnet:
323	remove_proc_entry("softnet_stat", net->proc_net);
324	out_dev:
325	remove_proc_entry("dev", net->proc_net);
326	goto out;
327	}
328
329	static void __net_exit dev_proc_net_exit(struct net *net)
330	{
331	wext_proc_exit(net);
332
333	remove_proc_entry("ptype", net->proc_net);
334	remove_proc_entry("softnet_stat", net->proc_net);
335	remove_proc_entry("dev", net->proc_net);
336	}
337
338	static struct pernet_operations __net_initdata dev_proc_ops = {
339	.init = dev_proc_net_init,
340	.exit = dev_proc_net_exit,
341	};
342
900ff8c6 CW	343	static int dev_mc_seq_show(struct seq_file seq, void v)
	344	{
	345	struct netdev_hw_addr *ha;
	346	struct net_device *dev = v;
	347
	348	if (v == SEQ_START_TOKEN)
	349	return 0;
	350
	351	netif_addr_lock_bh(dev);
	352	netdev_for_each_mc_addr(ha, dev) {
	353	int i;
	354
	355	seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
	356	dev->name, ha->refcount, ha->global_use);
	357
	358	for (i = 0; i < dev->addr_len; i++)
	359	seq_printf(seq, "%02x", ha->addr[i]);
	360
	361	seq_putc(seq, '\n');
	362	}
	363	netif_addr_unlock_bh(dev);
	364	return 0;
	365	}
	366
	367	static const struct seq_operations dev_mc_seq_ops = {
	368	.start = dev_seq_start,
	369	.next = dev_seq_next,
	370	.stop = dev_seq_stop,
	371	.show = dev_mc_seq_show,
	372	};
	373
	374	static int dev_mc_seq_open(struct inode inode, struct file file)
	375	{
	376	return seq_open_net(inode, file, &dev_mc_seq_ops,
	377	sizeof(struct seq_net_private));
	378	}
	379
	380	static const struct file_operations dev_mc_seq_fops = {
	381	.owner = THIS_MODULE,
	382	.open = dev_mc_seq_open,
	383	.read = seq_read,
	384	.llseek = seq_lseek,
	385	.release = seq_release_net,
	386	};
	387
	388	static int __net_init dev_mc_net_init(struct net *net)
	389	{
	390	if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
	391	return -ENOMEM;
	392	return 0;
	393	}
	394
	395	static void __net_exit dev_mc_net_exit(struct net *net)
	396	{
	397	remove_proc_entry("dev_mcast", net->proc_net);
	398	}
	399
	400	static struct pernet_operations __net_initdata dev_mc_net_ops = {
	401	.init = dev_mc_net_init,
	402	.exit = dev_mc_net_exit,
	403	};
	404
cd061574	405	int __init dev_proc_init(void)
900ff8c6	406	{
cd061574 CW	407	int ret = register_pernet_subsys(&dev_proc_ops);
	408	if (!ret)
	409	return register_pernet_subsys(&dev_mc_net_ops);
	410	return ret;
900ff8c6	411	}