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(key_idx_compression, key_idx_compression, D); 64 STA_FILE(dev, dev->name, S); 65 STA_FILE(vlan_id, vlan_id, D); 66 STA_FILE(rx_packets, rx_packets, LU); 67 STA_FILE(tx_packets, tx_packets, LU); 68 STA_FILE(rx_bytes, rx_bytes, LU); 69 STA_FILE(tx_bytes, tx_bytes, LU); 70 STA_FILE(rx_duplicates, num_duplicates, LU); 71 STA_FILE(rx_fragments, rx_fragments, LU); 72 STA_FILE(rx_dropped, rx_dropped, LU); 73 STA_FILE(tx_fragments, tx_fragments, LU); 74 STA_FILE(tx_filtered, tx_filtered_count, LU); 75 STA_FILE(txrate, txrate, RATE); 76 STA_FILE(last_txrate, last_txrate, RATE); 77 STA_FILE(tx_retry_failed, tx_retry_failed, LU); 78 STA_FILE(tx_retry_count, tx_retry_count, LU); 79 STA_FILE(last_rssi, last_rssi, D); 80 STA_FILE(last_signal, last_signal, D); 81 STA_FILE(last_noise, last_noise, D); 82 STA_FILE(channel_use, channel_use, D); 83 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D); 84 85 static ssize_t sta_flags_read(struct file *file, char __user *userbuf, 86 size_t count, loff_t *ppos) 87 { 88 char buf[100]; 89 struct sta_info *sta = file->private_data; 90 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", 91 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "", 92 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "", 93 sta->flags & WLAN_STA_PS ? "PS\n" : "", 94 sta->flags & WLAN_STA_TIM ? "TIM\n" : "", 95 sta->flags & WLAN_STA_PERM ? "PERM\n" : "", 96 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", 97 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", 98 sta->flags & WLAN_STA_WME ? "WME\n" : "", 99 sta->flags & WLAN_STA_WDS ? "WDS\n" : ""); 100 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 101 } 102 STA_OPS(flags); 103 104 static ssize_t sta_num_ps_buf_frames_read(struct file *file, 105 char __user *userbuf, 106 size_t count, loff_t *ppos) 107 { 108 char buf[20]; 109 struct sta_info *sta = file->private_data; 110 int res = scnprintf(buf, sizeof(buf), "%u\n", 111 skb_queue_len(&sta->ps_tx_buf)); 112 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 113 } 114 STA_OPS(num_ps_buf_frames); 115 116 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf, 117 size_t count, loff_t *ppos) 118 { 119 char buf[100]; 120 struct sta_info *sta = file->private_data; 121 int res = scnprintf(buf, sizeof(buf), "%d %d %d\n", 122 sta->last_ack_rssi[0], 123 sta->last_ack_rssi[1], 124 sta->last_ack_rssi[2]); 125 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 126 } 127 STA_OPS(last_ack_rssi); 128 129 static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf, 130 size_t count, loff_t *ppos) 131 { 132 char buf[20]; 133 struct sta_info *sta = file->private_data; 134 int res = scnprintf(buf, sizeof(buf), "%d\n", 135 sta->last_ack ? 136 jiffies_to_msecs(jiffies - sta->last_ack) : -1); 137 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 138 } 139 STA_OPS(last_ack_ms); 140 141 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, 142 size_t count, loff_t *ppos) 143 { 144 char buf[20]; 145 struct sta_info *sta = file->private_data; 146 int res = scnprintf(buf, sizeof(buf), "%d\n", 147 jiffies_to_msecs(jiffies - sta->last_rx)); 148 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 149 } 150 STA_OPS(inactive_ms); 151 152 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, 153 size_t count, loff_t *ppos) 154 { 155 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 156 int i; 157 struct sta_info *sta = file->private_data; 158 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 159 p += scnprintf(p, sizeof(buf)+buf-p, "%x ", 160 sta->last_seq_ctrl[i]); 161 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 162 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 163 } 164 STA_OPS(last_seq_ctrl); 165 166 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 167 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf, 168 size_t count, loff_t *ppos) 169 { 170 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 171 int i; 172 struct sta_info *sta = file->private_data; 173 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 174 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 175 sta->wme_rx_queue[i]); 176 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 177 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 178 } 179 STA_OPS(wme_rx_queue); 180 181 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf, 182 size_t count, loff_t *ppos) 183 { 184 char buf[15*NUM_TX_DATA_QUEUES], *p = buf; 185 int i; 186 struct sta_info *sta = file->private_data; 187 for (i = 0; i < NUM_TX_DATA_QUEUES; i++) 188 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 189 sta->wme_tx_queue[i]); 190 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 191 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 192 } 193 STA_OPS(wme_tx_queue); 194 #endif 195 196 #define DEBUGFS_ADD(name) \ 197 sta->debugfs.name = debugfs_create_file(#name, 0444, \ 198 sta->debugfs.dir, sta, &sta_ ##name## _ops); 199 200 #define DEBUGFS_DEL(name) \ 201 debugfs_remove(sta->debugfs.name);\ 202 sta->debugfs.name = NULL; 203 204 205 void ieee80211_sta_debugfs_add(struct sta_info *sta) 206 { 207 char buf[3*6]; 208 struct dentry *stations_dir = sta->local->debugfs.stations; 209 210 if (!stations_dir) 211 return; 212 213 sprintf(buf, MAC_FMT, MAC_ARG(sta->addr)); 214 215 sta->debugfs.dir = debugfs_create_dir(buf, stations_dir); 216 if (!sta->debugfs.dir) 217 return; 218 219 DEBUGFS_ADD(flags); 220 DEBUGFS_ADD(num_ps_buf_frames); 221 DEBUGFS_ADD(last_ack_rssi); 222 DEBUGFS_ADD(last_ack_ms); 223 DEBUGFS_ADD(inactive_ms); 224 DEBUGFS_ADD(last_seq_ctrl); 225 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 226 DEBUGFS_ADD(wme_rx_queue); 227 DEBUGFS_ADD(wme_tx_queue); 228 #endif 229 } 230 231 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 232 { 233 DEBUGFS_DEL(flags); 234 DEBUGFS_DEL(num_ps_buf_frames); 235 DEBUGFS_DEL(last_ack_rssi); 236 DEBUGFS_DEL(last_ack_ms); 237 DEBUGFS_DEL(inactive_ms); 238 DEBUGFS_DEL(last_seq_ctrl); 239 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 240 DEBUGFS_DEL(wme_rx_queue); 241 DEBUGFS_DEL(wme_tx_queue); 242 #endif 243 244 debugfs_remove(sta->debugfs.dir); 245 sta->debugfs.dir = NULL; 246 } 247