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
50
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
103
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,
165 sd->cpu_collision, sd->received_rps, flow_limit_count);
166 return 0;
167}
168
169static const struct seq_operations dev_seq_ops = {
170 .start = dev_seq_start,
171 .next = dev_seq_next,
172 .stop = dev_seq_stop,
173 .show = dev_seq_show,
174};
175
176static int dev_seq_open(struct inode *inode, struct file *file)
177{
178 return seq_open_net(inode, file, &dev_seq_ops,
179 sizeof(struct seq_net_private));
180}
181
182static const struct file_operations dev_seq_fops = {
183 .owner = THIS_MODULE,
184 .open = dev_seq_open,
185 .read = seq_read,
186 .llseek = seq_lseek,
187 .release = seq_release_net,
188};
189
190static const struct seq_operations softnet_seq_ops = {
191 .start = softnet_seq_start,
192 .next = softnet_seq_next,
193 .stop = softnet_seq_stop,
194 .show = softnet_seq_show,
195};
196
197static int softnet_seq_open(struct inode *inode, struct file *file)
198{
199 return seq_open(file, &softnet_seq_ops);
200}
201
202static const struct file_operations softnet_seq_fops = {
203 .owner = THIS_MODULE,
204 .open = softnet_seq_open,
205 .read = seq_read,
206 .llseek = seq_lseek,
207 .release = seq_release,
208};
209
210static void *ptype_get_idx(loff_t pos)
211{
212 struct packet_type *pt = NULL;
213 loff_t i = 0;
214 int t;
215
216 list_for_each_entry_rcu(pt, &ptype_all, list) {
217 if (i == pos)
218 return pt;
219 ++i;
220 }
221
222 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
223 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
224 if (i == pos)
225 return pt;
226 ++i;
227 }
228 }
229 return NULL;
230}
231
232static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
233 __acquires(RCU)
234{
235 rcu_read_lock();
236 return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
237}
238
239static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
240{
241 struct packet_type *pt;
242 struct list_head *nxt;
243 int hash;
244
245 ++*pos;
246 if (v == SEQ_START_TOKEN)
247 return ptype_get_idx(0);
248
249 pt = v;
250 nxt = pt->list.next;
251 if (pt->type == htons(ETH_P_ALL)) {
252 if (nxt != &ptype_all)
253 goto found;
254 hash = 0;
255 nxt = ptype_base[0].next;
256 } else
257 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
258
259 while (nxt == &ptype_base[hash]) {
260 if (++hash >= PTYPE_HASH_SIZE)
261 return NULL;
262 nxt = ptype_base[hash].next;
263 }
264found:
265 return list_entry(nxt, struct packet_type, list);
266}
267
268static void ptype_seq_stop(struct seq_file *seq, void *v)
269 __releases(RCU)
270{
271 rcu_read_unlock();
272}
273
274static int ptype_seq_show(struct seq_file *seq, void *v)
275{
276 struct packet_type *pt = v;
277
278 if (v == SEQ_START_TOKEN)
279 seq_puts(seq, "Type Device Function\n");
280 else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
281 if (pt->type == htons(ETH_P_ALL))
282 seq_puts(seq, "ALL ");
283 else
284 seq_printf(seq, "%04x", ntohs(pt->type));
285
286 seq_printf(seq, " %-8s %pf\n",
287 pt->dev ? pt->dev->name : "", pt->func);
288 }
289
290 return 0;
291}
292
293static const struct seq_operations ptype_seq_ops = {
294 .start = ptype_seq_start,
295 .next = ptype_seq_next,
296 .stop = ptype_seq_stop,
297 .show = ptype_seq_show,
298};
299
300static int ptype_seq_open(struct inode *inode, struct file *file)
301{
302 return seq_open_net(inode, file, &ptype_seq_ops,
303 sizeof(struct seq_net_private));
304}
305
306static const struct file_operations ptype_seq_fops = {
307 .owner = THIS_MODULE,
308 .open = ptype_seq_open,
309 .read = seq_read,
310 .llseek = seq_lseek,
311 .release = seq_release_net,
312};
313
314
315static int __net_init dev_proc_net_init(struct net *net)
316{
317 int rc = -ENOMEM;
318
319 if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
320 goto out;
321 if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
322 &softnet_seq_fops))
323 goto out_dev;
324 if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
325 goto out_softnet;
326
327 if (wext_proc_init(net))
328 goto out_ptype;
329 rc = 0;
330out:
331 return rc;
332out_ptype:
333 remove_proc_entry("ptype", net->proc_net);
334out_softnet:
335 remove_proc_entry("softnet_stat", net->proc_net);
336out_dev:
337 remove_proc_entry("dev", net->proc_net);
338 goto out;
339}
340
341static 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
350static struct pernet_operations __net_initdata dev_proc_ops = {
351 .init = dev_proc_net_init,
352 .exit = dev_proc_net_exit,
353};
354
355static 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
360 if (v == SEQ_START_TOKEN)
361 return 0;
362
363 netif_addr_lock_bh(dev);
364 netdev_for_each_mc_addr(ha, dev) {
365 int i;
366
367 seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
368 dev->name, ha->refcount, ha->global_use);
369
370 for (i = 0; i < dev->addr_len; i++)
371 seq_printf(seq, "%02x", ha->addr[i]);
372
373 seq_putc(seq, '\n');
374 }
375 netif_addr_unlock_bh(dev);
376 return 0;
377}
378
379static const struct seq_operations dev_mc_seq_ops = {
380 .start = dev_seq_start,
381 .next = dev_seq_next,
382 .stop = dev_seq_stop,
383 .show = dev_mc_seq_show,
384};
385
386static int dev_mc_seq_open(struct inode *inode, struct file *file)
387{
388 return seq_open_net(inode, file, &dev_mc_seq_ops,
389 sizeof(struct seq_net_private));
390}
391
392static const struct file_operations dev_mc_seq_fops = {
393 .owner = THIS_MODULE,
394 .open = dev_mc_seq_open,
395 .read = seq_read,
396 .llseek = seq_lseek,
397 .release = seq_release_net,
398};
399
400static int __net_init dev_mc_net_init(struct net *net)
401{
402 if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
403 return -ENOMEM;
404 return 0;
405}
406
407static void __net_exit dev_mc_net_exit(struct net *net)
408{
409 remove_proc_entry("dev_mcast", net->proc_net);
410}
411
412static struct pernet_operations __net_initdata dev_mc_net_ops = {
413 .init = dev_mc_net_init,
414 .exit = dev_mc_net_exit,
415};
416
417int __init dev_proc_init(void)
418{
419 int ret = register_pernet_subsys(&dev_proc_ops);
420 if (!ret)
421 return register_pernet_subsys(&dev_mc_net_ops);
422 return ret;
423}
424
