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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; | |
99bbc707 | 149 | unsigned int flow_limit_count = 0; |
900ff8c6 | 150 | |
99bbc707 WB |
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", | |
900ff8c6 CW |
163 | sd->processed, sd->dropped, sd->time_squeeze, 0, |
164 | 0, 0, 0, 0, /* was fastroute */ | |
f0cdf76c FW |
165 | 0, /* was cpu_collision */ |
166 | sd->received_rps, flow_limit_count); | |
900ff8c6 CW |
167 | return 0; |
168 | } | |
169 | ||
170 | static 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 | ||
177 | static 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 | ||
183 | static 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 | ||
191 | static 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 | ||
198 | static int softnet_seq_open(struct inode *inode, struct file *file) | |
199 | { | |
200 | return seq_open(file, &softnet_seq_ops); | |
201 | } | |
202 | ||
203 | static 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 | ||
211 | static 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 | ||
233 | static 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 | ||
240 | static 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 | } | |
265 | found: | |
266 | return list_entry(nxt, struct packet_type, list); | |
267 | } | |
268 | ||
269 | static void ptype_seq_stop(struct seq_file *seq, void *v) | |
270 | __releases(RCU) | |
271 | { | |
272 | rcu_read_unlock(); | |
273 | } | |
274 | ||
275 | static 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 | ||
eaac5f3d | 287 | seq_printf(seq, " %-8s %pf\n", |
900ff8c6 CW |
288 | pt->dev ? pt->dev->name : "", pt->func); |
289 | } | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static 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 | ||
301 | static 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 | ||
307 | static 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 | ||
316 | static 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; | |
331 | out: | |
332 | return rc; | |
333 | out_ptype: | |
334 | remove_proc_entry("ptype", net->proc_net); | |
335 | out_softnet: | |
336 | remove_proc_entry("softnet_stat", net->proc_net); | |
337 | out_dev: | |
338 | remove_proc_entry("dev", net->proc_net); | |
339 | goto out; | |
340 | } | |
341 | ||
342 | static 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 | ||
351 | static struct pernet_operations __net_initdata dev_proc_ops = { | |
352 | .init = dev_proc_net_init, | |
353 | .exit = dev_proc_net_exit, | |
354 | }; | |
355 | ||
900ff8c6 CW |
356 | static 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 | ||
380 | static 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 | ||
387 | static 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 | ||
393 | static 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 | ||
401 | static 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 | ||
408 | static void __net_exit dev_mc_net_exit(struct net *net) | |
409 | { | |
410 | remove_proc_entry("dev_mcast", net->proc_net); | |
411 | } | |
412 | ||
413 | static struct pernet_operations __net_initdata dev_mc_net_ops = { | |
414 | .init = dev_mc_net_init, | |
415 | .exit = dev_mc_net_exit, | |
416 | }; | |
417 | ||
cd061574 | 418 | int __init dev_proc_init(void) |
900ff8c6 | 419 | { |
cd061574 CW |
420 | int ret = register_pernet_subsys(&dev_proc_ops); |
421 | if (!ret) | |
422 | return register_pernet_subsys(&dev_mc_net_ops); | |
423 | return ret; | |
900ff8c6 | 424 | } |