This source file includes following definitions.
- dev_from_same_bucket
- dev_from_bucket
- dev_seq_start
- dev_seq_next
- dev_seq_stop
- dev_seq_printf_stats
- dev_seq_show
- softnet_get_online
- softnet_seq_start
- softnet_seq_next
- softnet_seq_stop
- softnet_seq_show
- ptype_get_idx
- ptype_seq_start
- ptype_seq_next
- ptype_seq_stop
- ptype_seq_show
- dev_proc_net_init
- dev_proc_net_exit
- dev_mc_seq_show
- dev_mc_net_init
- dev_mc_net_exit
- dev_proc_init
1
2 #include <linux/netdevice.h>
3 #include <linux/proc_fs.h>
4 #include <linux/seq_file.h>
5 #include <net/wext.h>
6
7 #define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
8
9 #define get_bucket(x) ((x) >> BUCKET_SPACE)
10 #define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
11 #define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o))
12
13 extern struct list_head ptype_all __read_mostly;
14 extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
15
16 static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos)
17 {
18 struct net *net = seq_file_net(seq);
19 struct net_device *dev;
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, 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
51
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
104
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 unsigned int flow_limit_count = 0;
151
152 #ifdef CONFIG_NET_FLOW_LIMIT
153 struct sd_flow_limit *fl;
154
155 rcu_read_lock();
156 fl = rcu_dereference(sd->flow_limit);
157 if (fl)
158 flow_limit_count = fl->count;
159 rcu_read_unlock();
160 #endif
161
162 seq_printf(seq,
163 "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
164 sd->processed, sd->dropped, sd->time_squeeze, 0,
165 0, 0, 0, 0,
166 0,
167 sd->received_rps, flow_limit_count);
168 return 0;
169 }
170
171 static const struct seq_operations dev_seq_ops = {
172 .start = dev_seq_start,
173 .next = dev_seq_next,
174 .stop = dev_seq_stop,
175 .show = dev_seq_show,
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 void *ptype_get_idx(loff_t pos)
186 {
187 struct packet_type *pt = NULL;
188 loff_t i = 0;
189 int t;
190
191 list_for_each_entry_rcu(pt, &ptype_all, list) {
192 if (i == pos)
193 return pt;
194 ++i;
195 }
196
197 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
198 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
199 if (i == pos)
200 return pt;
201 ++i;
202 }
203 }
204 return NULL;
205 }
206
207 static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
208 __acquires(RCU)
209 {
210 rcu_read_lock();
211 return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
212 }
213
214 static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
215 {
216 struct packet_type *pt;
217 struct list_head *nxt;
218 int hash;
219
220 ++*pos;
221 if (v == SEQ_START_TOKEN)
222 return ptype_get_idx(0);
223
224 pt = v;
225 nxt = pt->list.next;
226 if (pt->type == htons(ETH_P_ALL)) {
227 if (nxt != &ptype_all)
228 goto found;
229 hash = 0;
230 nxt = ptype_base[0].next;
231 } else
232 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
233
234 while (nxt == &ptype_base[hash]) {
235 if (++hash >= PTYPE_HASH_SIZE)
236 return NULL;
237 nxt = ptype_base[hash].next;
238 }
239 found:
240 return list_entry(nxt, struct packet_type, list);
241 }
242
243 static void ptype_seq_stop(struct seq_file *seq, void *v)
244 __releases(RCU)
245 {
246 rcu_read_unlock();
247 }
248
249 static int ptype_seq_show(struct seq_file *seq, void *v)
250 {
251 struct packet_type *pt = v;
252
253 if (v == SEQ_START_TOKEN)
254 seq_puts(seq, "Type Device Function\n");
255 else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
256 if (pt->type == htons(ETH_P_ALL))
257 seq_puts(seq, "ALL ");
258 else
259 seq_printf(seq, "%04x", ntohs(pt->type));
260
261 seq_printf(seq, " %-8s %ps\n",
262 pt->dev ? pt->dev->name : "", pt->func);
263 }
264
265 return 0;
266 }
267
268 static const struct seq_operations ptype_seq_ops = {
269 .start = ptype_seq_start,
270 .next = ptype_seq_next,
271 .stop = ptype_seq_stop,
272 .show = ptype_seq_show,
273 };
274
275 static int __net_init dev_proc_net_init(struct net *net)
276 {
277 int rc = -ENOMEM;
278
279 if (!proc_create_net("dev", 0444, net->proc_net, &dev_seq_ops,
280 sizeof(struct seq_net_private)))
281 goto out;
282 if (!proc_create_seq("softnet_stat", 0444, net->proc_net,
283 &softnet_seq_ops))
284 goto out_dev;
285 if (!proc_create_net("ptype", 0444, net->proc_net, &ptype_seq_ops,
286 sizeof(struct seq_net_private)))
287 goto out_softnet;
288
289 if (wext_proc_init(net))
290 goto out_ptype;
291 rc = 0;
292 out:
293 return rc;
294 out_ptype:
295 remove_proc_entry("ptype", net->proc_net);
296 out_softnet:
297 remove_proc_entry("softnet_stat", net->proc_net);
298 out_dev:
299 remove_proc_entry("dev", net->proc_net);
300 goto out;
301 }
302
303 static void __net_exit dev_proc_net_exit(struct net *net)
304 {
305 wext_proc_exit(net);
306
307 remove_proc_entry("ptype", net->proc_net);
308 remove_proc_entry("softnet_stat", net->proc_net);
309 remove_proc_entry("dev", net->proc_net);
310 }
311
312 static struct pernet_operations __net_initdata dev_proc_ops = {
313 .init = dev_proc_net_init,
314 .exit = dev_proc_net_exit,
315 };
316
317 static int dev_mc_seq_show(struct seq_file *seq, void *v)
318 {
319 struct netdev_hw_addr *ha;
320 struct net_device *dev = v;
321
322 if (v == SEQ_START_TOKEN)
323 return 0;
324
325 netif_addr_lock_bh(dev);
326 netdev_for_each_mc_addr(ha, dev) {
327 seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
328 dev->ifindex, dev->name,
329 ha->refcount, ha->global_use,
330 (int)dev->addr_len, ha->addr);
331 }
332 netif_addr_unlock_bh(dev);
333 return 0;
334 }
335
336 static const struct seq_operations dev_mc_seq_ops = {
337 .start = dev_seq_start,
338 .next = dev_seq_next,
339 .stop = dev_seq_stop,
340 .show = dev_mc_seq_show,
341 };
342
343 static int __net_init dev_mc_net_init(struct net *net)
344 {
345 if (!proc_create_net("dev_mcast", 0, net->proc_net, &dev_mc_seq_ops,
346 sizeof(struct seq_net_private)))
347 return -ENOMEM;
348 return 0;
349 }
350
351 static void __net_exit dev_mc_net_exit(struct net *net)
352 {
353 remove_proc_entry("dev_mcast", net->proc_net);
354 }
355
356 static struct pernet_operations __net_initdata dev_mc_net_ops = {
357 .init = dev_mc_net_init,
358 .exit = dev_mc_net_exit,
359 };
360
361 int __init dev_proc_init(void)
362 {
363 int ret = register_pernet_subsys(&dev_proc_ops);
364 if (!ret)
365 return register_pernet_subsys(&dev_mc_net_ops);
366 return ret;
367 }