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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; | |
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 | ||
eaac5f3d | 274 | seq_printf(seq, " %-8s %pf\n", |
900ff8c6 CW |
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 | } |