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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; | |
19 | struct hlist_node *p; | |
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, p, h, name_hlist) { | |
25 | if (++count == offset) | |
26 | return dev; | |
27 | } | |
28 | ||
29 | return NULL; | |
30 | } | |
31 | ||
32 | static 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 | */ | |
53 | static 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 | ||
66 | static 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 | ||
72 | static void dev_seq_stop(struct seq_file *seq, void *v) | |
73 | __releases(RCU) | |
74 | { | |
75 | rcu_read_unlock(); | |
76 | } | |
77 | ||
78 | static 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 | */ | |
106 | static 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 | ||
119 | static 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 | ||
132 | static void *softnet_seq_start(struct seq_file *seq, loff_t *pos) | |
133 | { | |
134 | return softnet_get_online(pos); | |
135 | } | |
136 | ||
137 | static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
138 | { | |
139 | ++*pos; | |
140 | return softnet_get_online(pos); | |
141 | } | |
142 | ||
143 | static void softnet_seq_stop(struct seq_file *seq, void *v) | |
144 | { | |
145 | } | |
146 | ||
147 | static int softnet_seq_show(struct seq_file *seq, void *v) | |
148 | { | |
149 | struct softnet_data *sd = v; | |
150 | ||
151 | seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n", | |
152 | sd->processed, sd->dropped, sd->time_squeeze, 0, | |
153 | 0, 0, 0, 0, /* was fastroute */ | |
154 | sd->cpu_collision, sd->received_rps); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static const struct seq_operations dev_seq_ops = { | |
159 | .start = dev_seq_start, | |
160 | .next = dev_seq_next, | |
161 | .stop = dev_seq_stop, | |
162 | .show = dev_seq_show, | |
163 | }; | |
164 | ||
165 | static int dev_seq_open(struct inode *inode, struct file *file) | |
166 | { | |
167 | return seq_open_net(inode, file, &dev_seq_ops, | |
168 | sizeof(struct seq_net_private)); | |
169 | } | |
170 | ||
171 | static const struct file_operations dev_seq_fops = { | |
172 | .owner = THIS_MODULE, | |
173 | .open = dev_seq_open, | |
174 | .read = seq_read, | |
175 | .llseek = seq_lseek, | |
176 | .release = seq_release_net, | |
177 | }; | |
178 | ||
179 | static const struct seq_operations softnet_seq_ops = { | |
180 | .start = softnet_seq_start, | |
181 | .next = softnet_seq_next, | |
182 | .stop = softnet_seq_stop, | |
183 | .show = softnet_seq_show, | |
184 | }; | |
185 | ||
186 | static int softnet_seq_open(struct inode *inode, struct file *file) | |
187 | { | |
188 | return seq_open(file, &softnet_seq_ops); | |
189 | } | |
190 | ||
191 | static const struct file_operations softnet_seq_fops = { | |
192 | .owner = THIS_MODULE, | |
193 | .open = softnet_seq_open, | |
194 | .read = seq_read, | |
195 | .llseek = seq_lseek, | |
196 | .release = seq_release, | |
197 | }; | |
198 | ||
199 | static void *ptype_get_idx(loff_t pos) | |
200 | { | |
201 | struct packet_type *pt = NULL; | |
202 | loff_t i = 0; | |
203 | int t; | |
204 | ||
205 | list_for_each_entry_rcu(pt, &ptype_all, list) { | |
206 | if (i == pos) | |
207 | return pt; | |
208 | ++i; | |
209 | } | |
210 | ||
211 | for (t = 0; t < PTYPE_HASH_SIZE; t++) { | |
212 | list_for_each_entry_rcu(pt, &ptype_base[t], list) { | |
213 | if (i == pos) | |
214 | return pt; | |
215 | ++i; | |
216 | } | |
217 | } | |
218 | return NULL; | |
219 | } | |
220 | ||
221 | static void *ptype_seq_start(struct seq_file *seq, loff_t *pos) | |
222 | __acquires(RCU) | |
223 | { | |
224 | rcu_read_lock(); | |
225 | return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN; | |
226 | } | |
227 | ||
228 | static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
229 | { | |
230 | struct packet_type *pt; | |
231 | struct list_head *nxt; | |
232 | int hash; | |
233 | ||
234 | ++*pos; | |
235 | if (v == SEQ_START_TOKEN) | |
236 | return ptype_get_idx(0); | |
237 | ||
238 | pt = v; | |
239 | nxt = pt->list.next; | |
240 | if (pt->type == htons(ETH_P_ALL)) { | |
241 | if (nxt != &ptype_all) | |
242 | goto found; | |
243 | hash = 0; | |
244 | nxt = ptype_base[0].next; | |
245 | } else | |
246 | hash = ntohs(pt->type) & PTYPE_HASH_MASK; | |
247 | ||
248 | while (nxt == &ptype_base[hash]) { | |
249 | if (++hash >= PTYPE_HASH_SIZE) | |
250 | return NULL; | |
251 | nxt = ptype_base[hash].next; | |
252 | } | |
253 | found: | |
254 | return list_entry(nxt, struct packet_type, list); | |
255 | } | |
256 | ||
257 | static void ptype_seq_stop(struct seq_file *seq, void *v) | |
258 | __releases(RCU) | |
259 | { | |
260 | rcu_read_unlock(); | |
261 | } | |
262 | ||
263 | static int ptype_seq_show(struct seq_file *seq, void *v) | |
264 | { | |
265 | struct packet_type *pt = v; | |
266 | ||
267 | if (v == SEQ_START_TOKEN) | |
268 | seq_puts(seq, "Type Device Function\n"); | |
269 | else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) { | |
270 | if (pt->type == htons(ETH_P_ALL)) | |
271 | seq_puts(seq, "ALL "); | |
272 | else | |
273 | seq_printf(seq, "%04x", ntohs(pt->type)); | |
274 | ||
275 | seq_printf(seq, " %-8s %pF\n", | |
276 | pt->dev ? pt->dev->name : "", pt->func); | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | static const struct seq_operations ptype_seq_ops = { | |
283 | .start = ptype_seq_start, | |
284 | .next = ptype_seq_next, | |
285 | .stop = ptype_seq_stop, | |
286 | .show = ptype_seq_show, | |
287 | }; | |
288 | ||
289 | static int ptype_seq_open(struct inode *inode, struct file *file) | |
290 | { | |
291 | return seq_open_net(inode, file, &ptype_seq_ops, | |
292 | sizeof(struct seq_net_private)); | |
293 | } | |
294 | ||
295 | static const struct file_operations ptype_seq_fops = { | |
296 | .owner = THIS_MODULE, | |
297 | .open = ptype_seq_open, | |
298 | .read = seq_read, | |
299 | .llseek = seq_lseek, | |
300 | .release = seq_release_net, | |
301 | }; | |
302 | ||
303 | ||
304 | static int __net_init dev_proc_net_init(struct net *net) | |
305 | { | |
306 | int rc = -ENOMEM; | |
307 | ||
308 | if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops)) | |
309 | goto out; | |
310 | if (!proc_create("softnet_stat", S_IRUGO, net->proc_net, | |
311 | &softnet_seq_fops)) | |
312 | goto out_dev; | |
313 | if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops)) | |
314 | goto out_softnet; | |
315 | ||
316 | if (wext_proc_init(net)) | |
317 | goto out_ptype; | |
318 | rc = 0; | |
319 | out: | |
320 | return rc; | |
321 | out_ptype: | |
322 | remove_proc_entry("ptype", net->proc_net); | |
323 | out_softnet: | |
324 | remove_proc_entry("softnet_stat", net->proc_net); | |
325 | out_dev: | |
326 | remove_proc_entry("dev", net->proc_net); | |
327 | goto out; | |
328 | } | |
329 | ||
330 | static void __net_exit dev_proc_net_exit(struct net *net) | |
331 | { | |
332 | wext_proc_exit(net); | |
333 | ||
334 | remove_proc_entry("ptype", net->proc_net); | |
335 | remove_proc_entry("softnet_stat", net->proc_net); | |
336 | remove_proc_entry("dev", net->proc_net); | |
337 | } | |
338 | ||
339 | static struct pernet_operations __net_initdata dev_proc_ops = { | |
340 | .init = dev_proc_net_init, | |
341 | .exit = dev_proc_net_exit, | |
342 | }; | |
343 | ||
344 | int __init dev_proc_init(void) | |
345 | { | |
346 | return register_pernet_subsys(&dev_proc_ops); | |
347 | } | |
348 | ||
349 | static int dev_mc_seq_show(struct seq_file *seq, void *v) | |
350 | { | |
351 | struct netdev_hw_addr *ha; | |
352 | struct net_device *dev = v; | |
353 | ||
354 | if (v == SEQ_START_TOKEN) | |
355 | return 0; | |
356 | ||
357 | netif_addr_lock_bh(dev); | |
358 | netdev_for_each_mc_addr(ha, dev) { | |
359 | int i; | |
360 | ||
361 | seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex, | |
362 | dev->name, ha->refcount, ha->global_use); | |
363 | ||
364 | for (i = 0; i < dev->addr_len; i++) | |
365 | seq_printf(seq, "%02x", ha->addr[i]); | |
366 | ||
367 | seq_putc(seq, '\n'); | |
368 | } | |
369 | netif_addr_unlock_bh(dev); | |
370 | return 0; | |
371 | } | |
372 | ||
373 | static const struct seq_operations dev_mc_seq_ops = { | |
374 | .start = dev_seq_start, | |
375 | .next = dev_seq_next, | |
376 | .stop = dev_seq_stop, | |
377 | .show = dev_mc_seq_show, | |
378 | }; | |
379 | ||
380 | static int dev_mc_seq_open(struct inode *inode, struct file *file) | |
381 | { | |
382 | return seq_open_net(inode, file, &dev_mc_seq_ops, | |
383 | sizeof(struct seq_net_private)); | |
384 | } | |
385 | ||
386 | static const struct file_operations dev_mc_seq_fops = { | |
387 | .owner = THIS_MODULE, | |
388 | .open = dev_mc_seq_open, | |
389 | .read = seq_read, | |
390 | .llseek = seq_lseek, | |
391 | .release = seq_release_net, | |
392 | }; | |
393 | ||
394 | static int __net_init dev_mc_net_init(struct net *net) | |
395 | { | |
396 | if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops)) | |
397 | return -ENOMEM; | |
398 | return 0; | |
399 | } | |
400 | ||
401 | static void __net_exit dev_mc_net_exit(struct net *net) | |
402 | { | |
403 | remove_proc_entry("dev_mcast", net->proc_net); | |
404 | } | |
405 | ||
406 | static struct pernet_operations __net_initdata dev_mc_net_ops = { | |
407 | .init = dev_mc_net_init, | |
408 | .exit = dev_mc_net_exit, | |
409 | }; | |
410 | ||
411 | void __init dev_mcast_init(void) | |
412 | { | |
413 | register_pernet_subsys(&dev_mc_net_ops); | |
414 | } |