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
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,
153 sd->cpu_collision, sd->received_rps);
154 return 0;
155}
156
157static 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
164static 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
170static 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
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 int softnet_seq_open(struct inode *inode, struct file *file)
186{
187 return seq_open(file, &softnet_seq_ops);
188}
189
190static 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
198static 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
220static 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
227static 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 }
252found:
253 return list_entry(nxt, struct packet_type, list);
254}
255
256static void ptype_seq_stop(struct seq_file *seq, void *v)
257 __releases(RCU)
258{
259 rcu_read_unlock();
260}
261
262static 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
281static 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
288static 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
294static 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
303static 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;
318out:
319 return rc;
320out_ptype:
321 remove_proc_entry("ptype", net->proc_net);
322out_softnet:
323 remove_proc_entry("softnet_stat", net->proc_net);
324out_dev:
325 remove_proc_entry("dev", net->proc_net);
326 goto out;
327}
328
329static 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
338static struct pernet_operations __net_initdata dev_proc_ops = {
339 .init = dev_proc_net_init,
340 .exit = dev_proc_net_exit,
341};
342
343static 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
367static 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
374static 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
380static 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
388static 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
395static void __net_exit dev_mc_net_exit(struct net *net)
396{
397 remove_proc_entry("dev_mcast", net->proc_net);
398}
399
400static struct pernet_operations __net_initdata dev_mc_net_ops = {
401 .init = dev_mc_net_init,
402 .exit = dev_mc_net_exit,
403};
404
405int __init dev_proc_init(void)
406{
407 int ret = register_pernet_subsys(&dev_proc_ops);
408 if (!ret)
409 return register_pernet_subsys(&dev_mc_net_ops);
410 return ret;
411}
412
