424 lines
13 KiB
C
424 lines
13 KiB
C
/*
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* mac80211 debugfs for wireless PHYs
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*
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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*
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* GPLv2
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/rtnetlink.h>
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#include "ieee80211_i.h"
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#include "driver-ops.h"
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#include "rate.h"
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#include "debugfs.h"
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int mac80211_open_file_generic(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \
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static ssize_t name## _read(struct file *file, char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct ieee80211_local *local = file->private_data; \
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char buf[buflen]; \
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int res; \
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\
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res = scnprintf(buf, buflen, fmt "\n", ##value); \
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return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
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} \
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\
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static const struct file_operations name## _ops = { \
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.read = name## _read, \
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.open = mac80211_open_file_generic, \
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};
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#define DEBUGFS_ADD(name) \
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local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \
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local, &name## _ops);
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#define DEBUGFS_ADD_MODE(name, mode) \
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local->debugfs.name = debugfs_create_file(#name, mode, phyd, \
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local, &name## _ops);
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#define DEBUGFS_DEL(name) \
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debugfs_remove(local->debugfs.name); \
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local->debugfs.name = NULL;
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DEBUGFS_READONLY_FILE(frequency, 20, "%d",
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local->hw.conf.channel->center_freq);
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DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
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local->total_ps_buffered);
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DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",
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local->wep_iv & 0xffffff);
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DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s",
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local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
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static ssize_t tsf_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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u64 tsf;
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char buf[100];
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tsf = drv_get_tsf(local);
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snprintf(buf, sizeof(buf), "0x%016llx\n", (unsigned long long) tsf);
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return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
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}
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static ssize_t tsf_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long long tsf;
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char buf[100];
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size_t len;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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if (strncmp(buf, "reset", 5) == 0) {
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if (local->ops->reset_tsf) {
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drv_reset_tsf(local);
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printk(KERN_INFO "%s: debugfs reset TSF\n", wiphy_name(local->hw.wiphy));
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}
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} else {
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tsf = simple_strtoul(buf, NULL, 0);
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if (local->ops->set_tsf) {
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drv_set_tsf(local, tsf);
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printk(KERN_INFO "%s: debugfs set TSF to %#018llx\n", wiphy_name(local->hw.wiphy), tsf);
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}
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}
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return count;
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}
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static const struct file_operations tsf_ops = {
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.read = tsf_read,
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.write = tsf_write,
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.open = mac80211_open_file_generic
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};
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static ssize_t reset_write(struct file *file, const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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rtnl_lock();
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__ieee80211_suspend(&local->hw);
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__ieee80211_resume(&local->hw);
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rtnl_unlock();
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return count;
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}
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static const struct file_operations reset_ops = {
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.write = reset_write,
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.open = mac80211_open_file_generic,
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};
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static ssize_t noack_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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int res;
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char buf[10];
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res = scnprintf(buf, sizeof(buf), "%d\n", local->wifi_wme_noack_test);
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return simple_read_from_buffer(user_buf, count, ppos, buf, res);
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}
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static ssize_t noack_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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char buf[10];
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size_t len;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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local->wifi_wme_noack_test = !!simple_strtoul(buf, NULL, 0);
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return count;
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}
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static const struct file_operations noack_ops = {
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.read = noack_read,
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.write = noack_write,
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.open = mac80211_open_file_generic
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};
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static ssize_t queues_read(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_local *local = file->private_data;
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unsigned long flags;
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char buf[IEEE80211_MAX_QUEUES * 20];
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int q, res = 0;
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spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
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for (q = 0; q < local->hw.queues; q++)
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res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
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local->queue_stop_reasons[q],
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skb_queue_len(&local->pending[q]));
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spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
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return simple_read_from_buffer(user_buf, count, ppos, buf, res);
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}
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static const struct file_operations queues_ops = {
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.read = queues_read,
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.open = mac80211_open_file_generic
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};
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/* statistics stuff */
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#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
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DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
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static ssize_t format_devstat_counter(struct ieee80211_local *local,
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char __user *userbuf,
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size_t count, loff_t *ppos,
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int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
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int buflen))
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{
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struct ieee80211_low_level_stats stats;
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char buf[20];
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int res;
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rtnl_lock();
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res = drv_get_stats(local, &stats);
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rtnl_unlock();
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if (res)
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return res;
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res = printvalue(&stats, buf, sizeof(buf));
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return simple_read_from_buffer(userbuf, count, ppos, buf, res);
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}
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#define DEBUGFS_DEVSTATS_FILE(name) \
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static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
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char *buf, int buflen) \
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{ \
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return scnprintf(buf, buflen, "%u\n", stats->name); \
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} \
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static ssize_t stats_ ##name## _read(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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return format_devstat_counter(file->private_data, \
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userbuf, \
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count, \
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ppos, \
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print_devstats_##name); \
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} \
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\
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static const struct file_operations stats_ ##name## _ops = { \
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.read = stats_ ##name## _read, \
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.open = mac80211_open_file_generic, \
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};
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#define DEBUGFS_STATS_ADD(name) \
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local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\
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local, &stats_ ##name## _ops);
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#define DEBUGFS_STATS_DEL(name) \
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debugfs_remove(local->debugfs.stats.name); \
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local->debugfs.stats.name = NULL;
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DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
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local->dot11TransmittedFragmentCount);
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DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
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local->dot11MulticastTransmittedFrameCount);
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DEBUGFS_STATS_FILE(failed_count, 20, "%u",
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local->dot11FailedCount);
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DEBUGFS_STATS_FILE(retry_count, 20, "%u",
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local->dot11RetryCount);
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DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
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local->dot11MultipleRetryCount);
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DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
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local->dot11FrameDuplicateCount);
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DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
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local->dot11ReceivedFragmentCount);
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DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
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local->dot11MulticastReceivedFrameCount);
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DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
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local->dot11TransmittedFrameCount);
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#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
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DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
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local->tx_handlers_drop);
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DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
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local->tx_handlers_queued);
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DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
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local->tx_handlers_drop_unencrypted);
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DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
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local->tx_handlers_drop_fragment);
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DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
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local->tx_handlers_drop_wep);
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DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
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local->tx_handlers_drop_not_assoc);
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DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
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local->tx_handlers_drop_unauth_port);
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DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
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local->rx_handlers_drop);
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DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
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local->rx_handlers_queued);
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DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
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local->rx_handlers_drop_nullfunc);
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DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
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local->rx_handlers_drop_defrag);
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DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
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local->rx_handlers_drop_short);
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DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
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local->rx_handlers_drop_passive_scan);
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DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
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local->tx_expand_skb_head);
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DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
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local->tx_expand_skb_head_cloned);
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DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
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local->rx_expand_skb_head);
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DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
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local->rx_expand_skb_head2);
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DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
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local->rx_handlers_fragments);
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DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
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local->tx_status_drop);
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#endif
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DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
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DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
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DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
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DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
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void debugfs_hw_add(struct ieee80211_local *local)
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{
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struct dentry *phyd = local->hw.wiphy->debugfsdir;
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struct dentry *statsd;
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if (!phyd)
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return;
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local->debugfs.stations = debugfs_create_dir("stations", phyd);
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local->debugfs.keys = debugfs_create_dir("keys", phyd);
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DEBUGFS_ADD(frequency);
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DEBUGFS_ADD(total_ps_buffered);
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DEBUGFS_ADD(wep_iv);
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DEBUGFS_ADD(tsf);
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DEBUGFS_ADD(queues);
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DEBUGFS_ADD_MODE(reset, 0200);
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DEBUGFS_ADD(noack);
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statsd = debugfs_create_dir("statistics", phyd);
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local->debugfs.statistics = statsd;
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/* if the dir failed, don't put all the other things into the root! */
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if (!statsd)
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return;
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DEBUGFS_STATS_ADD(transmitted_fragment_count);
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DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
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DEBUGFS_STATS_ADD(failed_count);
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DEBUGFS_STATS_ADD(retry_count);
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DEBUGFS_STATS_ADD(multiple_retry_count);
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DEBUGFS_STATS_ADD(frame_duplicate_count);
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DEBUGFS_STATS_ADD(received_fragment_count);
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DEBUGFS_STATS_ADD(multicast_received_frame_count);
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DEBUGFS_STATS_ADD(transmitted_frame_count);
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#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
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DEBUGFS_STATS_ADD(tx_handlers_drop);
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DEBUGFS_STATS_ADD(tx_handlers_queued);
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DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
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DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
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DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
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DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
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DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
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DEBUGFS_STATS_ADD(rx_handlers_drop);
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DEBUGFS_STATS_ADD(rx_handlers_queued);
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DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
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DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
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DEBUGFS_STATS_ADD(rx_handlers_drop_short);
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DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
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DEBUGFS_STATS_ADD(tx_expand_skb_head);
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DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
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DEBUGFS_STATS_ADD(rx_expand_skb_head);
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DEBUGFS_STATS_ADD(rx_expand_skb_head2);
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DEBUGFS_STATS_ADD(rx_handlers_fragments);
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DEBUGFS_STATS_ADD(tx_status_drop);
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#endif
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DEBUGFS_STATS_ADD(dot11ACKFailureCount);
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DEBUGFS_STATS_ADD(dot11RTSFailureCount);
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DEBUGFS_STATS_ADD(dot11FCSErrorCount);
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DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
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}
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void debugfs_hw_del(struct ieee80211_local *local)
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{
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DEBUGFS_DEL(frequency);
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DEBUGFS_DEL(total_ps_buffered);
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DEBUGFS_DEL(wep_iv);
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DEBUGFS_DEL(tsf);
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DEBUGFS_DEL(queues);
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DEBUGFS_DEL(reset);
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DEBUGFS_DEL(noack);
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DEBUGFS_STATS_DEL(transmitted_fragment_count);
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DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
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DEBUGFS_STATS_DEL(failed_count);
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DEBUGFS_STATS_DEL(retry_count);
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DEBUGFS_STATS_DEL(multiple_retry_count);
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DEBUGFS_STATS_DEL(frame_duplicate_count);
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DEBUGFS_STATS_DEL(received_fragment_count);
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DEBUGFS_STATS_DEL(multicast_received_frame_count);
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DEBUGFS_STATS_DEL(transmitted_frame_count);
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DEBUGFS_STATS_DEL(num_scans);
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#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
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DEBUGFS_STATS_DEL(tx_handlers_drop);
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DEBUGFS_STATS_DEL(tx_handlers_queued);
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DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
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DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
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DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
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DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
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DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
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DEBUGFS_STATS_DEL(rx_handlers_drop);
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DEBUGFS_STATS_DEL(rx_handlers_queued);
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DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
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DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
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DEBUGFS_STATS_DEL(rx_handlers_drop_short);
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DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
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DEBUGFS_STATS_DEL(tx_expand_skb_head);
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DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
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DEBUGFS_STATS_DEL(rx_expand_skb_head);
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DEBUGFS_STATS_DEL(rx_expand_skb_head2);
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DEBUGFS_STATS_DEL(rx_handlers_fragments);
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DEBUGFS_STATS_DEL(tx_status_drop);
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#endif
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DEBUGFS_STATS_DEL(dot11ACKFailureCount);
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DEBUGFS_STATS_DEL(dot11RTSFailureCount);
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DEBUGFS_STATS_DEL(dot11FCSErrorCount);
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DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
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debugfs_remove(local->debugfs.statistics);
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local->debugfs.statistics = NULL;
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debugfs_remove(local->debugfs.stations);
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local->debugfs.stations = NULL;
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debugfs_remove(local->debugfs.keys);
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local->debugfs.keys = NULL;
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}
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