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00011 #include <linux/debugfs.h>
00012 #include <linux/rtnetlink.h>
00013 #include "ieee80211_i.h"
00014 #include "driver-ops.h"
00015 #include "rate.h"
00016 #include "debugfs.h"
00017
00018 #define DEBUGFS_FORMAT_BUFFER_SIZE 100
00019
00020 int mac80211_format_buffer(char __user *userbuf, size_t count,
00021 loff_t *ppos, char *fmt, ...)
00022 {
00023 va_list args;
00024 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
00025 int res;
00026
00027 va_start(args, fmt);
00028 res = vscnprintf(buf, sizeof(buf), fmt, args);
00029 va_end(args);
00030
00031 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
00032 }
00033
00034 #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \
00035 static ssize_t name## _read(struct file *file, char __user *userbuf, \
00036 size_t count, loff_t *ppos) \
00037 { \
00038 struct ieee80211_local *local = file->private_data; \
00039 \
00040 return mac80211_format_buffer(userbuf, count, ppos, \
00041 fmt "\n", ##value); \
00042 }
00043
00044 #define DEBUGFS_READONLY_FILE_OPS(name) \
00045 static const struct file_operations name## _ops = { \
00046 .read = name## _read, \
00047 .open = simple_open, \
00048 .llseek = generic_file_llseek, \
00049 };
00050
00051 #define DEBUGFS_READONLY_FILE(name, fmt, value...) \
00052 DEBUGFS_READONLY_FILE_FN(name, fmt, value) \
00053 DEBUGFS_READONLY_FILE_OPS(name)
00054
00055 #define DEBUGFS_ADD(name) \
00056 debugfs_create_file(#name, 0400, phyd, local, &name## _ops);
00057
00058 #define DEBUGFS_ADD_MODE(name, mode) \
00059 debugfs_create_file(#name, mode, phyd, local, &name## _ops);
00060
00061
00062 DEBUGFS_READONLY_FILE(user_power, "%d",
00063 local->user_power_level);
00064 DEBUGFS_READONLY_FILE(power, "%d",
00065 local->hw.conf.power_level);
00066 DEBUGFS_READONLY_FILE(frequency, "%d",
00067 local->hw.conf.channel->center_freq);
00068 DEBUGFS_READONLY_FILE(total_ps_buffered, "%d",
00069 local->total_ps_buffered);
00070 DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
00071 local->wep_iv & 0xffffff);
00072 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
00073 local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
00074
00075 static ssize_t reset_write(struct file *file, const char __user *user_buf,
00076 size_t count, loff_t *ppos)
00077 {
00078 struct ieee80211_local *local = file->private_data;
00079
00080 rtnl_lock();
00081 __ieee80211_suspend(&local->hw, NULL);
00082 __ieee80211_resume(&local->hw);
00083 rtnl_unlock();
00084
00085 return count;
00086 }
00087
00088 static const struct file_operations reset_ops = {
00089 .write = reset_write,
00090 .open = simple_open,
00091 .llseek = noop_llseek,
00092 };
00093
00094 static ssize_t channel_type_read(struct file *file, char __user *user_buf,
00095 size_t count, loff_t *ppos)
00096 {
00097 struct ieee80211_local *local = file->private_data;
00098 const char *buf;
00099
00100 switch (local->hw.conf.channel_type) {
00101 case NL80211_CHAN_NO_HT:
00102 buf = "no ht\n";
00103 break;
00104 case NL80211_CHAN_HT20:
00105 buf = "ht20\n";
00106 break;
00107 case NL80211_CHAN_HT40MINUS:
00108 buf = "ht40-\n";
00109 break;
00110 case NL80211_CHAN_HT40PLUS:
00111 buf = "ht40+\n";
00112 break;
00113 default:
00114 buf = "???";
00115 break;
00116 }
00117
00118 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
00119 }
00120
00121 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
00122 size_t count, loff_t *ppos)
00123 {
00124 struct ieee80211_local *local = file->private_data;
00125 int mxln = 500;
00126 ssize_t rv;
00127 char *buf = kzalloc(mxln, GFP_KERNEL);
00128 int sf = 0;
00129
00130 if (!buf)
00131 return 0;
00132
00133 sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags);
00134 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
00135 sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n");
00136 if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
00137 sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n");
00138 if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING)
00139 sf += snprintf(buf + sf, mxln - sf,
00140 "HOST_BCAST_PS_BUFFERING\n");
00141 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)
00142 sf += snprintf(buf + sf, mxln - sf,
00143 "2GHZ_SHORT_SLOT_INCAPABLE\n");
00144 if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)
00145 sf += snprintf(buf + sf, mxln - sf,
00146 "2GHZ_SHORT_PREAMBLE_INCAPABLE\n");
00147 if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
00148 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n");
00149 if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
00150 sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n");
00151 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
00152 sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_PERIOD\n");
00153 if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)
00154 sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n");
00155 if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)
00156 sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n");
00157 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS)
00158 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n");
00159 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
00160 sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n");
00161 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
00162 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n");
00163 if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE)
00164 sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n");
00165 if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS)
00166 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n");
00167 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
00168 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n");
00169 if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)
00170 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n");
00171 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
00172 sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n");
00173 if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
00174 sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n");
00175 if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK)
00176 sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n");
00177 if (local->hw.flags & IEEE80211_HW_AP_LINK_PS)
00178 sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n");
00179 if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW)
00180 sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n");
00181 if (local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)
00182 sf += snprintf(buf + sf, mxln - sf, "SCAN_WHILE_IDLE\n");
00183
00184 rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
00185 kfree(buf);
00186 return rv;
00187 }
00188
00189 static ssize_t queues_read(struct file *file, char __user *user_buf,
00190 size_t count, loff_t *ppos)
00191 {
00192 struct ieee80211_local *local = file->private_data;
00193 unsigned long flags;
00194 char buf[IEEE80211_MAX_QUEUES * 20];
00195 int q, res = 0;
00196
00197 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
00198 for (q = 0; q < local->hw.queues; q++)
00199 res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q,
00200 local->queue_stop_reasons[q],
00201 skb_queue_len(&local->pending[q]));
00202 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
00203
00204 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
00205 }
00206
00207 DEBUGFS_READONLY_FILE_OPS(hwflags);
00208 DEBUGFS_READONLY_FILE_OPS(channel_type);
00209 DEBUGFS_READONLY_FILE_OPS(queues);
00210
00211
00212
00213 static ssize_t format_devstat_counter(struct ieee80211_local *local,
00214 char __user *userbuf,
00215 size_t count, loff_t *ppos,
00216 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
00217 int buflen))
00218 {
00219 struct ieee80211_low_level_stats stats;
00220 char buf[20];
00221 int res;
00222
00223 rtnl_lock();
00224 res = drv_get_stats(local, &stats);
00225 rtnl_unlock();
00226 if (res)
00227 return res;
00228 res = printvalue(&stats, buf, sizeof(buf));
00229 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
00230 }
00231
00232 #define DEBUGFS_DEVSTATS_FILE(name) \
00233 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
00234 char *buf, int buflen) \
00235 { \
00236 return scnprintf(buf, buflen, "%u\n", stats->name); \
00237 } \
00238 static ssize_t stats_ ##name## _read(struct file *file, \
00239 char __user *userbuf, \
00240 size_t count, loff_t *ppos) \
00241 { \
00242 return format_devstat_counter(file->private_data, \
00243 userbuf, \
00244 count, \
00245 ppos, \
00246 print_devstats_##name); \
00247 } \
00248 \
00249 static const struct file_operations stats_ ##name## _ops = { \
00250 .read = stats_ ##name## _read, \
00251 .open = simple_open, \
00252 .llseek = generic_file_llseek, \
00253 };
00254
00255 #define DEBUGFS_STATS_ADD(name, field) \
00256 debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
00257 #define DEBUGFS_DEVSTATS_ADD(name) \
00258 debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
00259
00260 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
00261 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
00262 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
00263 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
00264
00265 void debugfs_hw_add(struct ieee80211_local *local)
00266 {
00267 struct dentry *phyd = local->hw.wiphy->debugfsdir;
00268 struct dentry *statsd;
00269
00270 if (!phyd)
00271 return;
00272
00273 local->debugfs.keys = debugfs_create_dir("keys", phyd);
00274
00275 DEBUGFS_ADD(frequency);
00276 DEBUGFS_ADD(total_ps_buffered);
00277 DEBUGFS_ADD(wep_iv);
00278 DEBUGFS_ADD(queues);
00279 DEBUGFS_ADD_MODE(reset, 0200);
00280 DEBUGFS_ADD(channel_type);
00281 DEBUGFS_ADD(hwflags);
00282 DEBUGFS_ADD(user_power);
00283 DEBUGFS_ADD(power);
00284
00285 statsd = debugfs_create_dir("statistics", phyd);
00286
00287
00288 if (!statsd)
00289 return;
00290
00291 DEBUGFS_STATS_ADD(transmitted_fragment_count,
00292 local->dot11TransmittedFragmentCount);
00293 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
00294 local->dot11MulticastTransmittedFrameCount);
00295 DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
00296 DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
00297 DEBUGFS_STATS_ADD(multiple_retry_count,
00298 local->dot11MultipleRetryCount);
00299 DEBUGFS_STATS_ADD(frame_duplicate_count,
00300 local->dot11FrameDuplicateCount);
00301 DEBUGFS_STATS_ADD(received_fragment_count,
00302 local->dot11ReceivedFragmentCount);
00303 DEBUGFS_STATS_ADD(multicast_received_frame_count,
00304 local->dot11MulticastReceivedFrameCount);
00305 DEBUGFS_STATS_ADD(transmitted_frame_count,
00306 local->dot11TransmittedFrameCount);
00307 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
00308 DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
00309 DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
00310 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
00311 local->tx_handlers_drop_unencrypted);
00312 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
00313 local->tx_handlers_drop_fragment);
00314 DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
00315 local->tx_handlers_drop_wep);
00316 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
00317 local->tx_handlers_drop_not_assoc);
00318 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
00319 local->tx_handlers_drop_unauth_port);
00320 DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
00321 DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
00322 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
00323 local->rx_handlers_drop_nullfunc);
00324 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
00325 local->rx_handlers_drop_defrag);
00326 DEBUGFS_STATS_ADD(rx_handlers_drop_short,
00327 local->rx_handlers_drop_short);
00328 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
00329 local->rx_handlers_drop_passive_scan);
00330 DEBUGFS_STATS_ADD(tx_expand_skb_head,
00331 local->tx_expand_skb_head);
00332 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
00333 local->tx_expand_skb_head_cloned);
00334 DEBUGFS_STATS_ADD(rx_expand_skb_head,
00335 local->rx_expand_skb_head);
00336 DEBUGFS_STATS_ADD(rx_expand_skb_head2,
00337 local->rx_expand_skb_head2);
00338 DEBUGFS_STATS_ADD(rx_handlers_fragments,
00339 local->rx_handlers_fragments);
00340 DEBUGFS_STATS_ADD(tx_status_drop,
00341 local->tx_status_drop);
00342 #endif
00343 DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
00344 DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
00345 DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
00346 DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
00347 }