--- /dev/null
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/wext.h>
+
+#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
+
+#define get_bucket(x) ((x) >> BUCKET_SPACE)
+#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1))
+#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o))
+
+extern struct list_head ptype_all __read_mostly;
+extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
+
+static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos)
+{
+ struct net *net = seq_file_net(seq);
+ struct net_device *dev;
+ struct hlist_head *h;
+ unsigned int count = 0, offset = get_offset(*pos);
+
+ h = &net->dev_name_head[get_bucket(*pos)];
+ hlist_for_each_entry_rcu(dev, h, name_hlist) {
+ if (++count == offset)
+ return dev;
+ }
+
+ return NULL;
+}
+
+static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos)
+{
+ struct net_device *dev;
+ unsigned int bucket;
+
+ do {
+ dev = dev_from_same_bucket(seq, pos);
+ if (dev)
+ return dev;
+
+ bucket = get_bucket(*pos) + 1;
+ *pos = set_bucket_offset(bucket, 1);
+ } while (bucket < NETDEV_HASHENTRIES);
+
+ return NULL;
+}
+
+/*
+ * This is invoked by the /proc filesystem handler to display a device
+ * in detail.
+ */
+static void *dev_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
+{
+ rcu_read_lock();
+ if (!*pos)
+ return SEQ_START_TOKEN;
+
+ if (get_bucket(*pos) >= NETDEV_HASHENTRIES)
+ return NULL;
+
+ return dev_from_bucket(seq, pos);
+}
+
+static void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+ return dev_from_bucket(seq, pos);
+}
+
+static void dev_seq_stop(struct seq_file *seq, void *v)
+ __releases(RCU)
+{
+ rcu_read_unlock();
+}
+
+static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
+{
+ struct rtnl_link_stats64 temp;
+ const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
+
+ seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
+ "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
+ dev->name, stats->rx_bytes, stats->rx_packets,
+ stats->rx_errors,
+ stats->rx_dropped + stats->rx_missed_errors,
+ stats->rx_fifo_errors,
+ stats->rx_length_errors + stats->rx_over_errors +
+ stats->rx_crc_errors + stats->rx_frame_errors,
+ stats->rx_compressed, stats->multicast,
+ stats->tx_bytes, stats->tx_packets,
+ stats->tx_errors, stats->tx_dropped,
+ stats->tx_fifo_errors, stats->collisions,
+ stats->tx_carrier_errors +
+ stats->tx_aborted_errors +
+ stats->tx_window_errors +
+ stats->tx_heartbeat_errors,
+ stats->tx_compressed);
+}
+
+/*
+ * Called from the PROCfs module. This now uses the new arbitrary sized
+ * /proc/net interface to create /proc/net/dev
+ */
+static int dev_seq_show(struct seq_file *seq, void *v)
+{
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq, "Inter-| Receive "
+ " | Transmit\n"
+ " face |bytes packets errs drop fifo frame "
+ "compressed multicast|bytes packets errs "
+ "drop fifo colls carrier compressed\n");
+ else
+ dev_seq_printf_stats(seq, v);
+ return 0;
+}
+
+static struct softnet_data *softnet_get_online(loff_t *pos)
+{
+ struct softnet_data *sd = NULL;
+
+ while (*pos < nr_cpu_ids)
+ if (cpu_online(*pos)) {
+ sd = &per_cpu(softnet_data, *pos);
+ break;
+ } else
+ ++*pos;
+ return sd;
+}
+
+static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ return softnet_get_online(pos);
+}
+
+static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+ return softnet_get_online(pos);
+}
+
+static void softnet_seq_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int softnet_seq_show(struct seq_file *seq, void *v)
+{
+ struct softnet_data *sd = v;
+ unsigned int flow_limit_count = 0;
+
+#ifdef CONFIG_NET_FLOW_LIMIT
+ struct sd_flow_limit *fl;
+
+ rcu_read_lock();
+ fl = rcu_dereference(sd->flow_limit);
+ if (fl)
+ flow_limit_count = fl->count;
+ rcu_read_unlock();
+#endif
+
+ seq_printf(seq,
+ "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ sd->processed, sd->dropped, sd->time_squeeze, 0,
+ 0, 0, 0, 0, /* was fastroute */
+ sd->cpu_collision, sd->received_rps, flow_limit_count);
+ return 0;
+}
+
+static const struct seq_operations dev_seq_ops = {
+ .start = dev_seq_start,
+ .next = dev_seq_next,
+ .stop = dev_seq_stop,
+ .show = dev_seq_show,
+};
+
+static int dev_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open_net(inode, file, &dev_seq_ops,
+ sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = dev_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_net,
+};
+
+static const struct seq_operations softnet_seq_ops = {
+ .start = softnet_seq_start,
+ .next = softnet_seq_next,
+ .stop = softnet_seq_stop,
+ .show = softnet_seq_show,
+};
+
+static int softnet_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &softnet_seq_ops);
+}
+
+static const struct file_operations softnet_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = softnet_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static void *ptype_get_idx(loff_t pos)
+{
+ struct packet_type *pt = NULL;
+ loff_t i = 0;
+ int t;
+
+ list_for_each_entry_rcu(pt, &ptype_all, list) {
+ if (i == pos)
+ return pt;
+ ++i;
+ }
+
+ for (t = 0; t < PTYPE_HASH_SIZE; t++) {
+ list_for_each_entry_rcu(pt, &ptype_base[t], list) {
+ if (i == pos)
+ return pt;
+ ++i;
+ }
+ }
+ return NULL;
+}
+
+static void *ptype_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
+{
+ rcu_read_lock();
+ return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN;
+}
+
+static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct packet_type *pt;
+ struct list_head *nxt;
+ int hash;
+
+ ++*pos;
+ if (v == SEQ_START_TOKEN)
+ return ptype_get_idx(0);
+
+ pt = v;
+ nxt = pt->list.next;
+ if (pt->type == htons(ETH_P_ALL)) {
+ if (nxt != &ptype_all)
+ goto found;
+ hash = 0;
+ nxt = ptype_base[0].next;
+ } else
+ hash = ntohs(pt->type) & PTYPE_HASH_MASK;
+
+ while (nxt == &ptype_base[hash]) {
+ if (++hash >= PTYPE_HASH_SIZE)
+ return NULL;
+ nxt = ptype_base[hash].next;
+ }
+found:
+ return list_entry(nxt, struct packet_type, list);
+}
+
+static void ptype_seq_stop(struct seq_file *seq, void *v)
+ __releases(RCU)
+{
+ rcu_read_unlock();
+}
+
+static int ptype_seq_show(struct seq_file *seq, void *v)
+{
+ struct packet_type *pt = v;
+
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq, "Type Device Function\n");
+ else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
+ if (pt->type == htons(ETH_P_ALL))
+ seq_puts(seq, "ALL ");
+ else
+ seq_printf(seq, "%04x", ntohs(pt->type));
+
+ seq_printf(seq, " %-8s %pf\n",
+ pt->dev ? pt->dev->name : "", pt->func);
+ }
+
+ return 0;
+}
+
+static const struct seq_operations ptype_seq_ops = {
+ .start = ptype_seq_start,
+ .next = ptype_seq_next,
+ .stop = ptype_seq_stop,
+ .show = ptype_seq_show,
+};
+
+static int ptype_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open_net(inode, file, &ptype_seq_ops,
+ sizeof(struct seq_net_private));
+}
+
+static const struct file_operations ptype_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = ptype_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_net,
+};
+
+
+static int __net_init dev_proc_net_init(struct net *net)
+{
+ int rc = -ENOMEM;
+
+ if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
+ goto out;
+ if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
+ &softnet_seq_fops))
+ goto out_dev;
+ if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
+ goto out_softnet;
+
+ if (wext_proc_init(net))
+ goto out_ptype;
+ rc = 0;
+out:
+ return rc;
+out_ptype:
+ remove_proc_entry("ptype", net->proc_net);
+out_softnet:
+ remove_proc_entry("softnet_stat", net->proc_net);
+out_dev:
+ remove_proc_entry("dev", net->proc_net);
+ goto out;
+}
+
+static void __net_exit dev_proc_net_exit(struct net *net)
+{
+ wext_proc_exit(net);
+
+ remove_proc_entry("ptype", net->proc_net);
+ remove_proc_entry("softnet_stat", net->proc_net);
+ remove_proc_entry("dev", net->proc_net);
+}
+
+static struct pernet_operations __net_initdata dev_proc_ops = {
+ .init = dev_proc_net_init,
+ .exit = dev_proc_net_exit,
+};
+
+static int dev_mc_seq_show(struct seq_file *seq, void *v)
+{
+ struct netdev_hw_addr *ha;
+ struct net_device *dev = v;
+
+ if (v == SEQ_START_TOKEN)
+ return 0;
+
+ netif_addr_lock_bh(dev);
+ netdev_for_each_mc_addr(ha, dev) {
+ int i;
+
+ seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
+ dev->name, ha->refcount, ha->global_use);
+
+ for (i = 0; i < dev->addr_len; i++)
+ seq_printf(seq, "%02x", ha->addr[i]);
+
+ seq_putc(seq, '\n');
+ }
+ netif_addr_unlock_bh(dev);
+ return 0;
+}
+
+static const struct seq_operations dev_mc_seq_ops = {
+ .start = dev_seq_start,
+ .next = dev_seq_next,
+ .stop = dev_seq_stop,
+ .show = dev_mc_seq_show,
+};
+
+static int dev_mc_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open_net(inode, file, &dev_mc_seq_ops,
+ sizeof(struct seq_net_private));
+}
+
+static const struct file_operations dev_mc_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = dev_mc_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_net,
+};
+
+static int __net_init dev_mc_net_init(struct net *net)
+{
+ if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops))
+ return -ENOMEM;
+ return 0;
+}
+
+static void __net_exit dev_mc_net_exit(struct net *net)
+{
+ remove_proc_entry("dev_mcast", net->proc_net);
+}
+
+static struct pernet_operations __net_initdata dev_mc_net_ops = {
+ .init = dev_mc_net_init,
+ .exit = dev_mc_net_exit,
+};
+
+int __init dev_proc_init(void)
+{
+ int ret = register_pernet_subsys(&dev_proc_ops);
+ if (!ret)
+ return register_pernet_subsys(&dev_mc_net_ops);
+ return ret;
+}
Code Review / kvmfornfv.git / blobdiff