/* * 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 "ieee80211_rate.h" #include "debugfs.h" int mac80211_open_file_generic(struct inode *inode, struct file *file) { file->private_data = inode->i_private; return 0; } static const char *ieee80211_mode_str(int mode) { switch (mode) { case MODE_IEEE80211A: return "IEEE 802.11a"; case MODE_IEEE80211B: return "IEEE 802.11b"; case MODE_IEEE80211G: return "IEEE 802.11g"; case MODE_ATHEROS_TURBO: return "Atheros Turbo (5 GHz)"; default: return "UNKNOWN"; } } static ssize_t modes_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; struct ieee80211_hw_mode *mode; char buf[150], *p = buf; /* FIXME: locking! */ list_for_each_entry(mode, &local->modes_list, list) { p += scnprintf(p, sizeof(buf)+buf-p, "%s\n", ieee80211_mode_str(mode->mode)); } return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); } static const struct file_operations modes_ops = { .read = modes_read, .open = mac80211_open_file_generic, }; #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, 0444, phyd, \ local, &name## _ops); #define DEBUGFS_DEL(name) \ debugfs_remove(local->debugfs.name); \ local->debugfs.name = NULL; DEBUGFS_READONLY_FILE(channel, 20, "%d", local->hw.conf.channel); DEBUGFS_READONLY_FILE(frequency, 20, "%d", local->hw.conf.freq); DEBUGFS_READONLY_FILE(radar_detect, 20, "%d", local->hw.conf.radar_detect); DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d", local->hw.conf.antenna_sel_tx); DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d", local->hw.conf.antenna_sel_rx); DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d", local->bridge_packets); DEBUGFS_READONLY_FILE(key_tx_rx_threshold, 20, "%d", local->key_tx_rx_threshold); 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->short_retry_limit); DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", local->long_retry_limit); DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", local->total_ps_buffered); DEBUGFS_READONLY_FILE(mode, 20, "%s", ieee80211_mode_str(local->hw.conf.phymode)); DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x", local->wep_iv & 0xffffff); DEBUGFS_READONLY_FILE(tx_power_reduction, 20, "%d.%d dBm", local->hw.conf.tx_power_reduction / 10, local->hw.conf.tx_power_reduction % 10); DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>"); /* statistics stuff */ static inline int rtnl_lock_local(struct ieee80211_local *local) { rtnl_lock(); if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) { rtnl_unlock(); return -ENODEV; } return 0; } #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; res = rtnl_lock_local(local); if (res) return res; 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, 0444, 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); DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u", local->dot11WEPUndecryptableCount); #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); static ssize_t stats_wme_rx_queue_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; char buf[NUM_RX_DATA_QUEUES*15], *p = buf; int i; for (i = 0; i < NUM_RX_DATA_QUEUES; i++) p += scnprintf(p, sizeof(buf)+buf-p, "%u\n", local->wme_rx_queue[i]); return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); } static const struct file_operations stats_wme_rx_queue_ops = { .read = stats_wme_rx_queue_read, .open = mac80211_open_file_generic, }; static ssize_t stats_wme_tx_queue_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; char buf[NUM_TX_DATA_QUEUES*15], *p = buf; int i; for (i = 0; i < NUM_TX_DATA_QUEUES; i++) p += scnprintf(p, sizeof(buf)+buf-p, "%u\n", local->wme_tx_queue[i]); return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); } static const struct file_operations stats_wme_tx_queue_ops = { .read = stats_wme_tx_queue_read, .open = mac80211_open_file_generic, }; #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(channel); DEBUGFS_ADD(frequency); DEBUGFS_ADD(radar_detect); DEBUGFS_ADD(antenna_sel_tx); DEBUGFS_ADD(antenna_sel_rx); DEBUGFS_ADD(bridge_packets); DEBUGFS_ADD(key_tx_rx_threshold); 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(mode); DEBUGFS_ADD(wep_iv); DEBUGFS_ADD(tx_power_reduction); DEBUGFS_ADD(modes); 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); DEBUGFS_STATS_ADD(wep_undecryptable_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); DEBUGFS_STATS_ADD(wme_tx_queue); DEBUGFS_STATS_ADD(wme_rx_queue); #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(channel); DEBUGFS_DEL(frequency); DEBUGFS_DEL(radar_detect); DEBUGFS_DEL(antenna_sel_tx); DEBUGFS_DEL(antenna_sel_rx); DEBUGFS_DEL(bridge_packets); DEBUGFS_DEL(key_tx_rx_threshold); 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(mode); DEBUGFS_DEL(wep_iv); DEBUGFS_DEL(tx_power_reduction); DEBUGFS_DEL(modes); 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(wep_undecryptable_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); DEBUGFS_STATS_DEL(wme_tx_queue); DEBUGFS_STATS_DEL(wme_rx_queue); #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; }