1 /* 2 * Copyright 2003-2005 Devicescape Software, Inc. 3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> 4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #include <linux/debugfs.h> 12 #include <linux/ieee80211.h> 13 #include "ieee80211_i.h" 14 #include "debugfs.h" 15 #include "debugfs_sta.h" 16 #include "sta_info.h" 17 18 /* sta attributtes */ 19 20 #define STA_READ(name, buflen, field, format_string) \ 21 static ssize_t sta_ ##name## _read(struct file *file, \ 22 char __user *userbuf, \ 23 size_t count, loff_t *ppos) \ 24 { \ 25 int res; \ 26 struct sta_info *sta = file->private_data; \ 27 char buf[buflen]; \ 28 res = scnprintf(buf, buflen, format_string, sta->field); \ 29 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ 30 } 31 #define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n") 32 #define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n") 33 #define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n") 34 #define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n") 35 36 #define STA_READ_RATE(name, field) \ 37 static ssize_t sta_##name##_read(struct file *file, \ 38 char __user *userbuf, \ 39 size_t count, loff_t *ppos) \ 40 { \ 41 struct sta_info *sta = file->private_data; \ 42 struct ieee80211_local *local = wdev_priv(sta->dev->ieee80211_ptr);\ 43 struct ieee80211_hw_mode *mode = local->oper_hw_mode; \ 44 char buf[20]; \ 45 int res = scnprintf(buf, sizeof(buf), "%d\n", \ 46 (sta->field >= 0 && \ 47 sta->field < mode->num_rates) ? \ 48 mode->rates[sta->field].rate : -1); \ 49 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ 50 } 51 52 #define STA_OPS(name) \ 53 static const struct file_operations sta_ ##name## _ops = { \ 54 .read = sta_##name##_read, \ 55 .open = mac80211_open_file_generic, \ 56 } 57 58 #define STA_FILE(name, field, format) \ 59 STA_READ_##format(name, field) \ 60 STA_OPS(name) 61 62 STA_FILE(aid, aid, D); 63 STA_FILE(dev, dev->name, S); 64 STA_FILE(rx_packets, rx_packets, LU); 65 STA_FILE(tx_packets, tx_packets, LU); 66 STA_FILE(rx_bytes, rx_bytes, LU); 67 STA_FILE(tx_bytes, tx_bytes, LU); 68 STA_FILE(rx_duplicates, num_duplicates, LU); 69 STA_FILE(rx_fragments, rx_fragments, LU); 70 STA_FILE(rx_dropped, rx_dropped, LU); 71 STA_FILE(tx_fragments, tx_fragments, LU); 72 STA_FILE(tx_filtered, tx_filtered_count, LU); 73 STA_FILE(txrate, txrate, RATE); 74 STA_FILE(last_txrate, last_txrate, RATE); 75 STA_FILE(tx_retry_failed, tx_retry_failed, LU); 76 STA_FILE(tx_retry_count, tx_retry_count, LU); 77 STA_FILE(last_rssi, last_rssi, D); 78 STA_FILE(last_signal, last_signal, D); 79 STA_FILE(last_noise, last_noise, D); 80 STA_FILE(channel_use, channel_use, D); 81 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D); 82 83 static ssize_t sta_flags_read(struct file *file, char __user *userbuf, 84 size_t count, loff_t *ppos) 85 { 86 char buf[100]; 87 struct sta_info *sta = file->private_data; 88 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", 89 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "", 90 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "", 91 sta->flags & WLAN_STA_PS ? "PS\n" : "", 92 sta->flags & WLAN_STA_TIM ? "TIM\n" : "", 93 sta->flags & WLAN_STA_PERM ? "PERM\n" : "", 94 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", 95 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", 96 sta->flags & WLAN_STA_WME ? "WME\n" : "", 97 sta->flags & WLAN_STA_WDS ? "WDS\n" : ""); 98 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 99 } 100 STA_OPS(flags); 101 102 static ssize_t sta_num_ps_buf_frames_read(struct file *file, 103 char __user *userbuf, 104 size_t count, loff_t *ppos) 105 { 106 char buf[20]; 107 struct sta_info *sta = file->private_data; 108 int res = scnprintf(buf, sizeof(buf), "%u\n", 109 skb_queue_len(&sta->ps_tx_buf)); 110 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 111 } 112 STA_OPS(num_ps_buf_frames); 113 114 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf, 115 size_t count, loff_t *ppos) 116 { 117 char buf[100]; 118 struct sta_info *sta = file->private_data; 119 int res = scnprintf(buf, sizeof(buf), "%d %d %d\n", 120 sta->last_ack_rssi[0], 121 sta->last_ack_rssi[1], 122 sta->last_ack_rssi[2]); 123 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 124 } 125 STA_OPS(last_ack_rssi); 126 127 static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf, 128 size_t count, loff_t *ppos) 129 { 130 char buf[20]; 131 struct sta_info *sta = file->private_data; 132 int res = scnprintf(buf, sizeof(buf), "%d\n", 133 sta->last_ack ? 134 jiffies_to_msecs(jiffies - sta->last_ack) : -1); 135 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 136 } 137 STA_OPS(last_ack_ms); 138 139 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, 140 size_t count, loff_t *ppos) 141 { 142 char buf[20]; 143 struct sta_info *sta = file->private_data; 144 int res = scnprintf(buf, sizeof(buf), "%d\n", 145 jiffies_to_msecs(jiffies - sta->last_rx)); 146 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 147 } 148 STA_OPS(inactive_ms); 149 150 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, 151 size_t count, loff_t *ppos) 152 { 153 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 154 int i; 155 struct sta_info *sta = file->private_data; 156 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 157 p += scnprintf(p, sizeof(buf)+buf-p, "%x ", 158 le16_to_cpu(sta->last_seq_ctrl[i])); 159 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 160 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 161 } 162 STA_OPS(last_seq_ctrl); 163 164 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 165 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf, 166 size_t count, loff_t *ppos) 167 { 168 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 169 int i; 170 struct sta_info *sta = file->private_data; 171 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 172 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 173 sta->wme_rx_queue[i]); 174 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 175 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 176 } 177 STA_OPS(wme_rx_queue); 178 179 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf, 180 size_t count, loff_t *ppos) 181 { 182 char buf[15*NUM_TX_DATA_QUEUES], *p = buf; 183 int i; 184 struct sta_info *sta = file->private_data; 185 for (i = 0; i < NUM_TX_DATA_QUEUES; i++) 186 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 187 sta->wme_tx_queue[i]); 188 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 189 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 190 } 191 STA_OPS(wme_tx_queue); 192 #endif 193 194 #define DEBUGFS_ADD(name) \ 195 sta->debugfs.name = debugfs_create_file(#name, 0444, \ 196 sta->debugfs.dir, sta, &sta_ ##name## _ops); 197 198 #define DEBUGFS_DEL(name) \ 199 debugfs_remove(sta->debugfs.name);\ 200 sta->debugfs.name = NULL; 201 202 203 void ieee80211_sta_debugfs_add(struct sta_info *sta) 204 { 205 struct dentry *stations_dir = sta->local->debugfs.stations; 206 DECLARE_MAC_BUF(mac); 207 208 if (!stations_dir) 209 return; 210 211 print_mac(mac, sta->addr); 212 213 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); 214 if (!sta->debugfs.dir) 215 return; 216 217 DEBUGFS_ADD(flags); 218 DEBUGFS_ADD(num_ps_buf_frames); 219 DEBUGFS_ADD(last_ack_rssi); 220 DEBUGFS_ADD(last_ack_ms); 221 DEBUGFS_ADD(inactive_ms); 222 DEBUGFS_ADD(last_seq_ctrl); 223 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 224 DEBUGFS_ADD(wme_rx_queue); 225 DEBUGFS_ADD(wme_tx_queue); 226 #endif 227 } 228 229 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 230 { 231 DEBUGFS_DEL(flags); 232 DEBUGFS_DEL(num_ps_buf_frames); 233 DEBUGFS_DEL(last_ack_rssi); 234 DEBUGFS_DEL(last_ack_ms); 235 DEBUGFS_DEL(inactive_ms); 236 DEBUGFS_DEL(last_seq_ctrl); 237 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 238 DEBUGFS_DEL(wme_rx_queue); 239 DEBUGFS_DEL(wme_tx_queue); 240 #endif 241 242 debugfs_remove(sta->debugfs.dir); 243 sta->debugfs.dir = NULL; 244 } 245