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1// SPDX-License-Identifier: GPL-2.0
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
13extern struct list_head ptype_all __read_mostly;
14extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
15
16static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos)
17{
18 struct net *net = seq_file_net(seq);
19 struct net_device *dev;
20 struct hlist_head *h;
21 unsigned int count = 0, offset = get_offset(*pos);
22
23 h = &net->dev_name_head[get_bucket(*pos)];
24 hlist_for_each_entry_rcu(dev, h, name_hlist) {
25 if (++count == offset)
26 return dev;
27 }
28
29 return NULL;
30}
31
32static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos)
33{
34 struct net_device *dev;
35 unsigned int bucket;
36
37 do {
38 dev = dev_from_same_bucket(seq, pos);
39 if (dev)
40 return dev;
41
42 bucket = get_bucket(*pos) + 1;
43 *pos = set_bucket_offset(bucket, 1);
44 } while (bucket < NETDEV_HASHENTRIES);
45
46 return NULL;
47}
48
49/*
50 * This is invoked by the /proc filesystem handler to display a device
51 * in detail.
52 */
53static void *dev_seq_start(struct seq_file *seq, loff_t *pos)
54 __acquires(RCU)
55{
56 rcu_read_lock();
57 if (!*pos)
58 return SEQ_START_TOKEN;
59
60 if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
61 return NULL;
62
63 return dev_from_bucket(seq, pos);
64}
65
66static void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
67{
68 ++*pos;
69 return dev_from_bucket(seq, pos);
70}
71
72static void dev_seq_stop(struct seq_file *seq, void *v)
73 __releases(RCU)
74{
75 rcu_read_unlock();
76}
77
78static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
79{
80 struct rtnl_link_stats64 temp;
81 const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
82
83 seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
84 "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
85 dev->name, stats->rx_bytes, stats->rx_packets,
86 stats->rx_errors,
87 stats->rx_dropped + stats->rx_missed_errors,
88 stats->rx_fifo_errors,
89 stats->rx_length_errors + stats->rx_over_errors +
90 stats->rx_crc_errors + stats->rx_frame_errors,
91 stats->rx_compressed, stats->multicast,
92 stats->tx_bytes, stats->tx_packets,
93 stats->tx_errors, stats->tx_dropped,
94 stats->tx_fifo_errors, stats->collisions,
95 stats->tx_carrier_errors +
96 stats->tx_aborted_errors +
97 stats->tx_window_errors +
98 stats->tx_heartbeat_errors,
99 stats->tx_compressed);
100}
101
102/*
103 * Called from the PROCfs module. This now uses the new arbitrary sized
104 * /proc/net interface to create /proc/net/dev
105 */
106static int dev_seq_show(struct seq_file *seq, void *v)
107{
108 if (v == SEQ_START_TOKEN)
109 seq_puts(seq, "Inter-| Receive "
110 " | Transmit\n"
111 " face |bytes packets errs drop fifo frame "
112 "compressed multicast|bytes packets errs "
113 "drop fifo colls carrier compressed\n");
114 else
115 dev_seq_printf_stats(seq, v);
116 return 0;
117}
118
119static struct softnet_data *softnet_get_online(loff_t *pos)
120{
121 struct softnet_data *sd = NULL;
122
123 while (*pos < nr_cpu_ids)
124 if (cpu_online(*pos)) {
125 sd = &per_cpu(softnet_data, *pos);
126 break;
127 } else
128 ++*pos;
129 return sd;
130}
131
132static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
133{
134 return softnet_get_online(pos);
135}
136
137static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
138{
139 ++*pos;
140 return softnet_get_online(pos);
141}
142
143static void softnet_seq_stop(struct seq_file *seq, void *v)
144{
145}
146
147static int softnet_seq_show(struct seq_file *seq, void *v)
148{
149 struct softnet_data *sd = v;
150 unsigned int flow_limit_count = 0;
151
152#ifdef CONFIG_NET_FLOW_LIMIT
153 struct sd_flow_limit *fl;
154
155 rcu_read_lock();
156 fl = rcu_dereference(sd->flow_limit);
157 if (fl)
158 flow_limit_count = fl->count;
159 rcu_read_unlock();
160#endif
161
162 seq_printf(seq,
163 "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
164 sd->processed, sd->dropped, sd->time_squeeze, 0,
165 0, 0, 0, 0, /* was fastroute */
166 0, /* was cpu_collision */
167 sd->received_rps, flow_limit_count);
168 return 0;
169}
170
171static const struct seq_operations dev_seq_ops = {
172 .start = dev_seq_start,
173 .next = dev_seq_next,
174 .stop = dev_seq_stop,
175 .show = dev_seq_show,
176};
177
178static 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
185static void *ptype_get_idx(loff_t pos)
186{
187 struct packet_type *pt = NULL;
188 loff_t i = 0;
189 int t;
190
191 list_for_each_entry_rcu(pt, &ptype_all, list) {
192 if (i == pos)
193 return pt;
194 ++i;
195 }
196
197 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
198 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
199 if (i == pos)
200 return pt;
201 ++i;
202 }
203 }
204 return NULL;
205}
206
207static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
208 __acquires(RCU)
209{
210 rcu_read_lock();
211 return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
212}
213
214static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
215{
216 struct packet_type *pt;
217 struct list_head *nxt;
218 int hash;
219
220 ++*pos;
221 if (v == SEQ_START_TOKEN)
222 return ptype_get_idx(0);
223
224 pt = v;
225 nxt = pt->list.next;
226 if (pt->type == htons(ETH_P_ALL)) {
227 if (nxt != &ptype_all)
228 goto found;
229 hash = 0;
230 nxt = ptype_base[0].next;
231 } else
232 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
233
234 while (nxt == &ptype_base[hash]) {
235 if (++hash >= PTYPE_HASH_SIZE)
236 return NULL;
237 nxt = ptype_base[hash].next;
238 }
239found:
240 return list_entry(nxt, struct packet_type, list);
241}
242
243static void ptype_seq_stop(struct seq_file *seq, void *v)
244 __releases(RCU)
245{
246 rcu_read_unlock();
247}
248
249static int ptype_seq_show(struct seq_file *seq, void *v)
250{
251 struct packet_type *pt = v;
252
253 if (v == SEQ_START_TOKEN)
254 seq_puts(seq, "Type Device Function\n");
255 else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
256 if (pt->type == htons(ETH_P_ALL))
257 seq_puts(seq, "ALL ");
258 else
259 seq_printf(seq, "%04x", ntohs(pt->type));
260
261 seq_printf(seq, " %-8s %ps\n",
262 pt->dev ? pt->dev->name : "", pt->func);
263 }
264
265 return 0;
266}
267
268static const struct seq_operations ptype_seq_ops = {
269 .start = ptype_seq_start,
270 .next = ptype_seq_next,
271 .stop = ptype_seq_stop,
272 .show = ptype_seq_show,
273};
274
275static int __net_init dev_proc_net_init(struct net *net)
276{
277 int rc = -ENOMEM;
278
279 if (!proc_create_net("dev", 0444, net->proc_net, &dev_seq_ops,
280 sizeof(struct seq_net_private)))
281 goto out;
282 if (!proc_create_seq("softnet_stat", 0444, net->proc_net,
283 &softnet_seq_ops))
284 goto out_dev;
285 if (!proc_create_net("ptype", 0444, net->proc_net, &ptype_seq_ops,
286 sizeof(struct seq_net_private)))
287 goto out_softnet;
288
289 if (wext_proc_init(net))
290 goto out_ptype;
291 rc = 0;
292out:
293 return rc;
294out_ptype:
295 remove_proc_entry("ptype", net->proc_net);
296out_softnet:
297 remove_proc_entry("softnet_stat", net->proc_net);
298out_dev:
299 remove_proc_entry("dev", net->proc_net);
300 goto out;
301}
302
303static void __net_exit dev_proc_net_exit(struct net *net)
304{
305 wext_proc_exit(net);
306
307 remove_proc_entry("ptype", net->proc_net);
308 remove_proc_entry("softnet_stat", net->proc_net);
309 remove_proc_entry("dev", net->proc_net);
310}
311
312static struct pernet_operations __net_initdata dev_proc_ops = {
313 .init = dev_proc_net_init,
314 .exit = dev_proc_net_exit,
315};
316
317static int dev_mc_seq_show(struct seq_file *seq, void *v)
318{
319 struct netdev_hw_addr *ha;
320 struct net_device *dev = v;
321
322 if (v == SEQ_START_TOKEN)
323 return 0;
324
325 netif_addr_lock_bh(dev);
326 netdev_for_each_mc_addr(ha, dev) {
327 seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
328 dev->ifindex, dev->name,
329 ha->refcount, ha->global_use,
330 (int)dev->addr_len, ha->addr);
331 }
332 netif_addr_unlock_bh(dev);
333 return 0;
334}
335
336static const struct seq_operations dev_mc_seq_ops = {
337 .start = dev_seq_start,
338 .next = dev_seq_next,
339 .stop = dev_seq_stop,
340 .show = dev_mc_seq_show,
341};
342
343static int __net_init dev_mc_net_init(struct net *net)
344{
345 if (!proc_create_net("dev_mcast", 0, net->proc_net, &dev_mc_seq_ops,
346 sizeof(struct seq_net_private)))
347 return -ENOMEM;
348 return 0;
349}
350
351static void __net_exit dev_mc_net_exit(struct net *net)
352{
353 remove_proc_entry("dev_mcast", net->proc_net);
354}
355
356static struct pernet_operations __net_initdata dev_mc_net_ops = {
357 .init = dev_mc_net_init,
358 .exit = dev_mc_net_exit,
359};
360
361int __init dev_proc_init(void)
362{
363 int ret = register_pernet_subsys(&dev_proc_ops);
364 if (!ret)
365 return register_pernet_subsys(&dev_mc_net_ops);
366 return ret;
367}
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
12extern struct list_head ptype_all __read_mostly;
13extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
14
15static 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;
19 struct hlist_head *h;
20 unsigned int count = 0, offset = get_offset(*pos);
21
22 h = &net->dev_name_head[get_bucket(*pos)];
23 hlist_for_each_entry_rcu(dev, h, name_hlist) {
24 if (++count == offset)
25 return dev;
26 }
27
28 return NULL;
29}
30
31static 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 */
52static 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
65static 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
71static void dev_seq_stop(struct seq_file *seq, void *v)
72 __releases(RCU)
73{
74 rcu_read_unlock();
75}
76
77static 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 */
105static 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
118static 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
131static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
132{
133 return softnet_get_online(pos);
134}
135
136static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
137{
138 ++*pos;
139 return softnet_get_online(pos);
140}
141
142static void softnet_seq_stop(struct seq_file *seq, void *v)
143{
144}
145
146static int softnet_seq_show(struct seq_file *seq, void *v)
147{
148 struct softnet_data *sd = v;
149 unsigned int flow_limit_count = 0;
150
151#ifdef CONFIG_NET_FLOW_LIMIT
152 struct sd_flow_limit *fl;
153
154 rcu_read_lock();
155 fl = rcu_dereference(sd->flow_limit);
156 if (fl)
157 flow_limit_count = fl->count;
158 rcu_read_unlock();
159#endif
160
161 seq_printf(seq,
162 "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
163 sd->processed, sd->dropped, sd->time_squeeze, 0,
164 0, 0, 0, 0, /* was fastroute */
165 0, /* was cpu_collision */
166 sd->received_rps, flow_limit_count);
167 return 0;
168}
169
170static const struct seq_operations dev_seq_ops = {
171 .start = dev_seq_start,
172 .next = dev_seq_next,
173 .stop = dev_seq_stop,
174 .show = dev_seq_show,
175};
176
177static int dev_seq_open(struct inode *inode, struct file *file)
178{
179 return seq_open_net(inode, file, &dev_seq_ops,
180 sizeof(struct seq_net_private));
181}
182
183static const struct file_operations dev_seq_fops = {
184 .owner = THIS_MODULE,
185 .open = dev_seq_open,
186 .read = seq_read,
187 .llseek = seq_lseek,
188 .release = seq_release_net,
189};
190
191static const struct seq_operations softnet_seq_ops = {
192 .start = softnet_seq_start,
193 .next = softnet_seq_next,
194 .stop = softnet_seq_stop,
195 .show = softnet_seq_show,
196};
197
198static int softnet_seq_open(struct inode *inode, struct file *file)
199{
200 return seq_open(file, &softnet_seq_ops);
201}
202
203static const struct file_operations softnet_seq_fops = {
204 .owner = THIS_MODULE,
205 .open = softnet_seq_open,
206 .read = seq_read,
207 .llseek = seq_lseek,
208 .release = seq_release,
209};
210
211static void *ptype_get_idx(loff_t pos)
212{
213 struct packet_type *pt = NULL;
214 loff_t i = 0;
215 int t;
216
217 list_for_each_entry_rcu(pt, &ptype_all, list) {
218 if (i == pos)
219 return pt;
220 ++i;
221 }
222
223 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
224 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
225 if (i == pos)
226 return pt;
227 ++i;
228 }
229 }
230 return NULL;
231}
232
233static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
234 __acquires(RCU)
235{
236 rcu_read_lock();
237 return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
238}
239
240static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
241{
242 struct packet_type *pt;
243 struct list_head *nxt;
244 int hash;
245
246 ++*pos;
247 if (v == SEQ_START_TOKEN)
248 return ptype_get_idx(0);
249
250 pt = v;
251 nxt = pt->list.next;
252 if (pt->type == htons(ETH_P_ALL)) {
253 if (nxt != &ptype_all)
254 goto found;
255 hash = 0;
256 nxt = ptype_base[0].next;
257 } else
258 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
259
260 while (nxt == &ptype_base[hash]) {
261 if (++hash >= PTYPE_HASH_SIZE)
262 return NULL;
263 nxt = ptype_base[hash].next;
264 }
265found:
266 return list_entry(nxt, struct packet_type, list);
267}
268
269static void ptype_seq_stop(struct seq_file *seq, void *v)
270 __releases(RCU)
271{
272 rcu_read_unlock();
273}
274
275static int ptype_seq_show(struct seq_file *seq, void *v)
276{
277 struct packet_type *pt = v;
278
279 if (v == SEQ_START_TOKEN)
280 seq_puts(seq, "Type Device Function\n");
281 else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
282 if (pt->type == htons(ETH_P_ALL))
283 seq_puts(seq, "ALL ");
284 else
285 seq_printf(seq, "%04x", ntohs(pt->type));
286
287 seq_printf(seq, " %-8s %pf\n",
288 pt->dev ? pt->dev->name : "", pt->func);
289 }
290
291 return 0;
292}
293
294static const struct seq_operations ptype_seq_ops = {
295 .start = ptype_seq_start,
296 .next = ptype_seq_next,
297 .stop = ptype_seq_stop,
298 .show = ptype_seq_show,
299};
300
301static int ptype_seq_open(struct inode *inode, struct file *file)
302{
303 return seq_open_net(inode, file, &ptype_seq_ops,
304 sizeof(struct seq_net_private));
305}
306
307static const struct file_operations ptype_seq_fops = {
308 .owner = THIS_MODULE,
309 .open = ptype_seq_open,
310 .read = seq_read,
311 .llseek = seq_lseek,
312 .release = seq_release_net,
313};
314
315
316static int __net_init dev_proc_net_init(struct net *net)
317{
318 int rc = -ENOMEM;
319
320 if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
321 goto out;
322 if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
323 &softnet_seq_fops))
324 goto out_dev;
325 if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
326 goto out_softnet;
327
328 if (wext_proc_init(net))
329 goto out_ptype;
330 rc = 0;
331out:
332 return rc;
333out_ptype:
334 remove_proc_entry("ptype", net->proc_net);
335out_softnet:
336 remove_proc_entry("softnet_stat", net->proc_net);
337out_dev:
338 remove_proc_entry("dev", net->proc_net);
339 goto out;
340}
341
342static void __net_exit dev_proc_net_exit(struct net *net)
343{
344 wext_proc_exit(net);
345
346 remove_proc_entry("ptype", net->proc_net);
347 remove_proc_entry("softnet_stat", net->proc_net);
348 remove_proc_entry("dev", net->proc_net);
349}
350
351static struct pernet_operations __net_initdata dev_proc_ops = {
352 .init = dev_proc_net_init,
353 .exit = dev_proc_net_exit,
354};
355
356static int dev_mc_seq_show(struct seq_file *seq, void *v)
357{
358 struct netdev_hw_addr *ha;
359 struct net_device *dev = v;
360
361 if (v == SEQ_START_TOKEN)
362 return 0;
363
364 netif_addr_lock_bh(dev);
365 netdev_for_each_mc_addr(ha, dev) {
366 int i;
367
368 seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
369 dev->name, ha->refcount, ha->global_use);
370
371 for (i = 0; i < dev->addr_len; i++)
372 seq_printf(seq, "%02x", ha->addr[i]);
373
374 seq_putc(seq, '\n');
375 }
376 netif_addr_unlock_bh(dev);
377 return 0;
378}
379
380static const struct seq_operations dev_mc_seq_ops = {
381 .start = dev_seq_start,
382 .next = dev_seq_next,
383 .stop = dev_seq_stop,
384 .show = dev_mc_seq_show,
385};
386
387static int dev_mc_seq_open(struct inode *inode, struct file *file)
388{
389 return seq_open_net(inode, file, &dev_mc_seq_ops,
390 sizeof(struct seq_net_private));
391}
392
393static const struct file_operations dev_mc_seq_fops = {
394 .owner = THIS_MODULE,
395 .open = dev_mc_seq_open,
396 .read = seq_read,
397 .llseek = seq_lseek,
398 .release = seq_release_net,
399};
400
401static int __net_init dev_mc_net_init(struct net *net)
402{
403 if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
404 return -ENOMEM;
405 return 0;
406}
407
408static void __net_exit dev_mc_net_exit(struct net *net)
409{
410 remove_proc_entry("dev_mcast", net->proc_net);
411}
412
413static struct pernet_operations __net_initdata dev_mc_net_ops = {
414 .init = dev_mc_net_init,
415 .exit = dev_mc_net_exit,
416};
417
418int __init dev_proc_init(void)
419{
420 int ret = register_pernet_subsys(&dev_proc_ops);
421 if (!ret)
422 return register_pernet_subsys(&dev_mc_net_ops);
423 return ret;
424}