1 #include <linux/netdevice.h>
2 #include <linux/proc_fs.h>
3 #include <linux/seq_file.h>
6 #define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
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))
12 extern struct list_head ptype_all __read_mostly;
13 extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
15 static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos)
17 struct net *net = seq_file_net(seq);
18 struct net_device *dev;
20 unsigned int count = 0, offset = get_offset(*pos);
22 h = &net->dev_name_head[get_bucket(*pos)];
23 hlist_for_each_entry_rcu(dev, h, name_hlist) {
24 if (++count == offset)
31 static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos)
33 struct net_device *dev;
37 dev = dev_from_same_bucket(seq, pos);
41 bucket = get_bucket(*pos) + 1;
42 *pos = set_bucket_offset(bucket, 1);
43 } while (bucket < NETDEV_HASHENTRIES);
49 * This is invoked by the /proc filesystem handler to display a device
52 static void *dev_seq_start(struct seq_file *seq, loff_t *pos)
57 return SEQ_START_TOKEN;
59 if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
62 return dev_from_bucket(seq, pos);
65 static void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
68 return dev_from_bucket(seq, pos);
71 static void dev_seq_stop(struct seq_file *seq, void *v)
77 static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
79 struct rtnl_link_stats64 temp;
80 const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
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,
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);
102 * Called from the PROCfs module. This now uses the new arbitrary sized
103 * /proc/net interface to create /proc/net/dev
105 static int dev_seq_show(struct seq_file *seq, void *v)
107 if (v == SEQ_START_TOKEN)
108 seq_puts(seq, "Inter-| Receive "
110 " face |bytes packets errs drop fifo frame "
111 "compressed multicast|bytes packets errs "
112 "drop fifo colls carrier compressed\n");
114 dev_seq_printf_stats(seq, v);
118 static struct softnet_data *softnet_get_online(loff_t *pos)
120 struct softnet_data *sd = NULL;
122 while (*pos < nr_cpu_ids)
123 if (cpu_online(*pos)) {
124 sd = &per_cpu(softnet_data, *pos);
131 static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
133 return softnet_get_online(pos);
136 static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
139 return softnet_get_online(pos);
142 static void softnet_seq_stop(struct seq_file *seq, void *v)
146 static int softnet_seq_show(struct seq_file *seq, void *v)
148 struct softnet_data *sd = v;
149 unsigned int flow_limit_count = 0;
151 #ifdef CONFIG_NET_FLOW_LIMIT
152 struct sd_flow_limit *fl;
155 fl = rcu_dereference(sd->flow_limit);
157 flow_limit_count = fl->count;
162 "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
163 sd->processed, sd->dropped, sd->time_squeeze, 0,
164 0, 0, 0, 0, /* was fastroute */
165 0, /* was cpu_collision */
166 sd->received_rps, flow_limit_count);
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,
177 static int dev_seq_open(struct inode *inode, struct file *file)
179 return seq_open_net(inode, file, &dev_seq_ops,
180 sizeof(struct seq_net_private));
183 static const struct file_operations dev_seq_fops = {
184 .owner = THIS_MODULE,
185 .open = dev_seq_open,
188 .release = seq_release_net,
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,
198 static int softnet_seq_open(struct inode *inode, struct file *file)
200 return seq_open(file, &softnet_seq_ops);
203 static const struct file_operations softnet_seq_fops = {
204 .owner = THIS_MODULE,
205 .open = softnet_seq_open,
208 .release = seq_release,
211 static void *ptype_get_idx(struct seq_file *seq, loff_t pos)
213 struct list_head *ptype_list = NULL;
214 struct packet_type *pt = NULL;
215 struct net_device *dev;
219 for_each_netdev_rcu(seq_file_net(seq), dev) {
220 ptype_list = &dev->ptype_all;
221 list_for_each_entry_rcu(pt, ptype_list, list) {
228 list_for_each_entry_rcu(pt, &ptype_all, list) {
234 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
235 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
244 static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
248 return *pos ? ptype_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
251 static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
253 struct net_device *dev;
254 struct packet_type *pt;
255 struct list_head *nxt;
259 if (v == SEQ_START_TOKEN)
260 return ptype_get_idx(seq, 0);
265 if (nxt != &pt->dev->ptype_all)
269 for_each_netdev_continue_rcu(seq_file_net(seq), dev) {
270 if (!list_empty(&dev->ptype_all)) {
271 nxt = dev->ptype_all.next;
276 nxt = ptype_all.next;
280 if (pt->type == htons(ETH_P_ALL)) {
282 if (nxt != &ptype_all)
285 nxt = ptype_base[0].next;
287 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
289 while (nxt == &ptype_base[hash]) {
290 if (++hash >= PTYPE_HASH_SIZE)
292 nxt = ptype_base[hash].next;
295 return list_entry(nxt, struct packet_type, list);
298 static void ptype_seq_stop(struct seq_file *seq, void *v)
304 static int ptype_seq_show(struct seq_file *seq, void *v)
306 struct packet_type *pt = v;
308 if (v == SEQ_START_TOKEN)
309 seq_puts(seq, "Type Device Function\n");
310 else if ((!pt->af_packet_net || net_eq(pt->af_packet_net, seq_file_net(seq))) &&
311 (!pt->dev || net_eq(dev_net(pt->dev), seq_file_net(seq)))) {
312 if (pt->type == htons(ETH_P_ALL))
313 seq_puts(seq, "ALL ");
315 seq_printf(seq, "%04x", ntohs(pt->type));
317 seq_printf(seq, " %-8s %pf\n",
318 pt->dev ? pt->dev->name : "", pt->func);
324 static const struct seq_operations ptype_seq_ops = {
325 .start = ptype_seq_start,
326 .next = ptype_seq_next,
327 .stop = ptype_seq_stop,
328 .show = ptype_seq_show,
331 static int ptype_seq_open(struct inode *inode, struct file *file)
333 return seq_open_net(inode, file, &ptype_seq_ops,
334 sizeof(struct seq_net_private));
337 static const struct file_operations ptype_seq_fops = {
338 .owner = THIS_MODULE,
339 .open = ptype_seq_open,
342 .release = seq_release_net,
346 static int __net_init dev_proc_net_init(struct net *net)
350 if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
352 if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
355 if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
358 if (wext_proc_init(net))
364 remove_proc_entry("ptype", net->proc_net);
366 remove_proc_entry("softnet_stat", net->proc_net);
368 remove_proc_entry("dev", net->proc_net);
372 static void __net_exit dev_proc_net_exit(struct net *net)
376 remove_proc_entry("ptype", net->proc_net);
377 remove_proc_entry("softnet_stat", net->proc_net);
378 remove_proc_entry("dev", net->proc_net);
381 static struct pernet_operations __net_initdata dev_proc_ops = {
382 .init = dev_proc_net_init,
383 .exit = dev_proc_net_exit,
386 static int dev_mc_seq_show(struct seq_file *seq, void *v)
388 struct netdev_hw_addr *ha;
389 struct net_device *dev = v;
391 if (v == SEQ_START_TOKEN)
394 netif_addr_lock_bh(dev);
395 netdev_for_each_mc_addr(ha, dev) {
398 seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
399 dev->name, ha->refcount, ha->global_use);
401 for (i = 0; i < dev->addr_len; i++)
402 seq_printf(seq, "%02x", ha->addr[i]);
406 netif_addr_unlock_bh(dev);
410 static const struct seq_operations dev_mc_seq_ops = {
411 .start = dev_seq_start,
412 .next = dev_seq_next,
413 .stop = dev_seq_stop,
414 .show = dev_mc_seq_show,
417 static int dev_mc_seq_open(struct inode *inode, struct file *file)
419 return seq_open_net(inode, file, &dev_mc_seq_ops,
420 sizeof(struct seq_net_private));
423 static const struct file_operations dev_mc_seq_fops = {
424 .owner = THIS_MODULE,
425 .open = dev_mc_seq_open,
428 .release = seq_release_net,
431 static int __net_init dev_mc_net_init(struct net *net)
433 if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
438 static void __net_exit dev_mc_net_exit(struct net *net)
440 remove_proc_entry("dev_mcast", net->proc_net);
443 static struct pernet_operations __net_initdata dev_mc_net_ops = {
444 .init = dev_mc_net_init,
445 .exit = dev_mc_net_exit,
448 int __init dev_proc_init(void)
450 int ret = register_pernet_subsys(&dev_proc_ops);
452 return register_pernet_subsys(&dev_mc_net_ops);