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