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;
21 unsigned int count = 0, offset = get_offset(*pos);
23 h = &net->dev_name_head[get_bucket(*pos)];
24 hlist_for_each_entry_rcu(dev, p, h, name_hlist) {
25 if (++count == offset)
32 static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos)
34 struct net_device *dev;
38 dev = dev_from_same_bucket(seq, pos);
42 bucket = get_bucket(*pos) + 1;
43 *pos = set_bucket_offset(bucket, 1);
44 } while (bucket < NETDEV_HASHENTRIES);
50 * This is invoked by the /proc filesystem handler to display a device
53 static void *dev_seq_start(struct seq_file *seq, loff_t *pos)
58 return SEQ_START_TOKEN;
60 if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
63 return dev_from_bucket(seq, pos);
66 static void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
69 return dev_from_bucket(seq, pos);
72 static void dev_seq_stop(struct seq_file *seq, void *v)
78 static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
80 struct rtnl_link_stats64 temp;
81 const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
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,
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);
103 * Called from the PROCfs module. This now uses the new arbitrary sized
104 * /proc/net interface to create /proc/net/dev
106 static int dev_seq_show(struct seq_file *seq, void *v)
108 if (v == SEQ_START_TOKEN)
109 seq_puts(seq, "Inter-| Receive "
111 " face |bytes packets errs drop fifo frame "
112 "compressed multicast|bytes packets errs "
113 "drop fifo colls carrier compressed\n");
115 dev_seq_printf_stats(seq, v);
119 static struct softnet_data *softnet_get_online(loff_t *pos)
121 struct softnet_data *sd = NULL;
123 while (*pos < nr_cpu_ids)
124 if (cpu_online(*pos)) {
125 sd = &per_cpu(softnet_data, *pos);
132 static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
134 return softnet_get_online(pos);
137 static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
140 return softnet_get_online(pos);
143 static void softnet_seq_stop(struct seq_file *seq, void *v)
147 static int softnet_seq_show(struct seq_file *seq, void *v)
149 struct softnet_data *sd = v;
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);
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,
165 static int dev_seq_open(struct inode *inode, struct file *file)
167 return seq_open_net(inode, file, &dev_seq_ops,
168 sizeof(struct seq_net_private));
171 static const struct file_operations dev_seq_fops = {
172 .owner = THIS_MODULE,
173 .open = dev_seq_open,
176 .release = seq_release_net,
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,
186 static int softnet_seq_open(struct inode *inode, struct file *file)
188 return seq_open(file, &softnet_seq_ops);
191 static const struct file_operations softnet_seq_fops = {
192 .owner = THIS_MODULE,
193 .open = softnet_seq_open,
196 .release = seq_release,
199 static void *ptype_get_idx(loff_t pos)
201 struct packet_type *pt = NULL;
205 list_for_each_entry_rcu(pt, &ptype_all, list) {
211 for (t = 0; t < PTYPE_HASH_SIZE; t++) {
212 list_for_each_entry_rcu(pt, &ptype_base[t], list) {
221 static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
225 return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
228 static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
230 struct packet_type *pt;
231 struct list_head *nxt;
235 if (v == SEQ_START_TOKEN)
236 return ptype_get_idx(0);
240 if (pt->type == htons(ETH_P_ALL)) {
241 if (nxt != &ptype_all)
244 nxt = ptype_base[0].next;
246 hash = ntohs(pt->type) & PTYPE_HASH_MASK;
248 while (nxt == &ptype_base[hash]) {
249 if (++hash >= PTYPE_HASH_SIZE)
251 nxt = ptype_base[hash].next;
254 return list_entry(nxt, struct packet_type, list);
257 static void ptype_seq_stop(struct seq_file *seq, void *v)
263 static int ptype_seq_show(struct seq_file *seq, void *v)
265 struct packet_type *pt = v;
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 ");
273 seq_printf(seq, "%04x", ntohs(pt->type));
275 seq_printf(seq, " %-8s %pF\n",
276 pt->dev ? pt->dev->name : "", pt->func);
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,
289 static int ptype_seq_open(struct inode *inode, struct file *file)
291 return seq_open_net(inode, file, &ptype_seq_ops,
292 sizeof(struct seq_net_private));
295 static const struct file_operations ptype_seq_fops = {
296 .owner = THIS_MODULE,
297 .open = ptype_seq_open,
300 .release = seq_release_net,
304 static int __net_init dev_proc_net_init(struct net *net)
308 if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
310 if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
313 if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
316 if (wext_proc_init(net))
322 remove_proc_entry("ptype", net->proc_net);
324 remove_proc_entry("softnet_stat", net->proc_net);
326 remove_proc_entry("dev", net->proc_net);
330 static void __net_exit dev_proc_net_exit(struct net *net)
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);
339 static struct pernet_operations __net_initdata dev_proc_ops = {
340 .init = dev_proc_net_init,
341 .exit = dev_proc_net_exit,
344 static int dev_mc_seq_show(struct seq_file *seq, void *v)
346 struct netdev_hw_addr *ha;
347 struct net_device *dev = v;
349 if (v == SEQ_START_TOKEN)
352 netif_addr_lock_bh(dev);
353 netdev_for_each_mc_addr(ha, dev) {
356 seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
357 dev->name, ha->refcount, ha->global_use);
359 for (i = 0; i < dev->addr_len; i++)
360 seq_printf(seq, "%02x", ha->addr[i]);
364 netif_addr_unlock_bh(dev);
368 static const struct seq_operations dev_mc_seq_ops = {
369 .start = dev_seq_start,
370 .next = dev_seq_next,
371 .stop = dev_seq_stop,
372 .show = dev_mc_seq_show,
375 static int dev_mc_seq_open(struct inode *inode, struct file *file)
377 return seq_open_net(inode, file, &dev_mc_seq_ops,
378 sizeof(struct seq_net_private));
381 static const struct file_operations dev_mc_seq_fops = {
382 .owner = THIS_MODULE,
383 .open = dev_mc_seq_open,
386 .release = seq_release_net,
389 static int __net_init dev_mc_net_init(struct net *net)
391 if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
396 static void __net_exit dev_mc_net_exit(struct net *net)
398 remove_proc_entry("dev_mcast", net->proc_net);
401 static struct pernet_operations __net_initdata dev_mc_net_ops = {
402 .init = dev_mc_net_init,
403 .exit = dev_mc_net_exit,
406 int __init dev_proc_init(void)
408 int ret = register_pernet_subsys(&dev_proc_ops);
410 return register_pernet_subsys(&dev_mc_net_ops);