2 * Copyright 2003-2005 Devicescape Software, Inc.
3 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
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.
11 #include <linux/debugfs.h>
12 #include <linux/ieee80211.h>
13 #include "ieee80211_i.h"
15 #include "debugfs_sta.h"
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) \
26 struct sta_info *sta = file->private_data; \
28 res = scnprintf(buf, buflen, format_string, sta->field); \
29 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
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")
36 #define STA_OPS(name) \
37 static const struct file_operations sta_ ##name## _ops = { \
38 .read = sta_##name##_read, \
39 .open = mac80211_open_file_generic, \
42 #define STA_FILE(name, field, format) \
43 STA_READ_##format(name, field) \
46 STA_FILE(aid, sta.aid, D);
47 STA_FILE(dev, sdata->dev->name, S);
48 STA_FILE(rx_packets, rx_packets, LU);
49 STA_FILE(tx_packets, tx_packets, LU);
50 STA_FILE(rx_bytes, rx_bytes, LU);
51 STA_FILE(tx_bytes, tx_bytes, LU);
52 STA_FILE(rx_duplicates, num_duplicates, LU);
53 STA_FILE(rx_fragments, rx_fragments, LU);
54 STA_FILE(rx_dropped, rx_dropped, LU);
55 STA_FILE(tx_fragments, tx_fragments, LU);
56 STA_FILE(tx_filtered, tx_filtered_count, LU);
57 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
58 STA_FILE(tx_retry_count, tx_retry_count, LU);
59 STA_FILE(last_signal, last_signal, D);
60 STA_FILE(last_noise, last_noise, D);
61 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
63 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
64 size_t count, loff_t *ppos)
67 struct sta_info *sta = file->private_data;
68 u32 staflags = get_sta_flags(sta);
69 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s",
70 staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
71 staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
72 staflags & WLAN_STA_PS ? "PS\n" : "",
73 staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
74 staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
75 staflags & WLAN_STA_WME ? "WME\n" : "",
76 staflags & WLAN_STA_WDS ? "WDS\n" : "",
77 staflags & WLAN_STA_MFP ? "MFP\n" : "");
78 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
82 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
84 size_t count, loff_t *ppos)
87 struct sta_info *sta = file->private_data;
88 int res = scnprintf(buf, sizeof(buf), "%u\n",
89 skb_queue_len(&sta->ps_tx_buf));
90 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
92 STA_OPS(num_ps_buf_frames);
94 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
95 size_t count, loff_t *ppos)
98 struct sta_info *sta = file->private_data;
99 int res = scnprintf(buf, sizeof(buf), "%d\n",
100 jiffies_to_msecs(jiffies - sta->last_rx));
101 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
103 STA_OPS(inactive_ms);
105 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
106 size_t count, loff_t *ppos)
108 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
110 struct sta_info *sta = file->private_data;
111 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
112 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
113 le16_to_cpu(sta->last_seq_ctrl[i]));
114 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
115 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
117 STA_OPS(last_seq_ctrl);
119 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
120 size_t count, loff_t *ppos)
122 char buf[30 + STA_TID_NUM * 70], *p = buf;
124 struct sta_info *sta = file->private_data;
126 spin_lock_bh(&sta->lock);
127 p += scnprintf(p, sizeof(buf)+buf-p, "next dialog_token is %#02x\n",
128 sta->ampdu_mlme.dialog_token_allocator + 1);
129 for (i = 0; i < STA_TID_NUM; i++) {
130 p += scnprintf(p, sizeof(buf)+buf-p, "TID %02d:", i);
131 p += scnprintf(p, sizeof(buf)+buf-p, " RX=%x",
132 sta->ampdu_mlme.tid_state_rx[i]);
133 p += scnprintf(p, sizeof(buf)+buf-p, "/DTKN=%#.2x",
134 sta->ampdu_mlme.tid_state_rx[i] ?
135 sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
136 p += scnprintf(p, sizeof(buf)+buf-p, "/SSN=%#.3x",
137 sta->ampdu_mlme.tid_state_rx[i] ?
138 sta->ampdu_mlme.tid_rx[i]->ssn : 0);
140 p += scnprintf(p, sizeof(buf)+buf-p, " TX=%x",
141 sta->ampdu_mlme.tid_state_tx[i]);
142 p += scnprintf(p, sizeof(buf)+buf-p, "/DTKN=%#.2x",
143 sta->ampdu_mlme.tid_state_tx[i] ?
144 sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
145 p += scnprintf(p, sizeof(buf)+buf-p, "/SSN=%#.3x",
146 sta->ampdu_mlme.tid_state_tx[i] ?
147 sta->ampdu_mlme.tid_tx[i]->ssn : 0);
148 p += scnprintf(p, sizeof(buf)+buf-p, "/pending=%03d",
149 sta->ampdu_mlme.tid_state_tx[i] ?
150 skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
151 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
153 spin_unlock_bh(&sta->lock);
155 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
159 #define DEBUGFS_ADD(name) \
160 debugfs_create_file(#name, 0400, \
161 sta->debugfs.dir, sta, &sta_ ##name## _ops);
164 void ieee80211_sta_debugfs_add(struct sta_info *sta)
166 struct dentry *stations_dir = sta->local->debugfs.stations;
169 sta->debugfs.add_has_run = true;
174 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
177 * This might fail due to a race condition:
178 * When mac80211 unlinks a station, the debugfs entries
179 * remain, but it is already possible to link a new
180 * station with the same address which triggers adding
181 * it to debugfs; therefore, if the old station isn't
182 * destroyed quickly enough the old station's debugfs
183 * dir might still be around.
185 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
186 if (!sta->debugfs.dir)
190 DEBUGFS_ADD(num_ps_buf_frames);
191 DEBUGFS_ADD(inactive_ms);
192 DEBUGFS_ADD(last_seq_ctrl);
193 DEBUGFS_ADD(agg_status);
195 DEBUGFS_ADD(rx_packets);
196 DEBUGFS_ADD(tx_packets);
197 DEBUGFS_ADD(rx_bytes);
198 DEBUGFS_ADD(tx_bytes);
199 DEBUGFS_ADD(rx_duplicates);
200 DEBUGFS_ADD(rx_fragments);
201 DEBUGFS_ADD(rx_dropped);
202 DEBUGFS_ADD(tx_fragments);
203 DEBUGFS_ADD(tx_filtered);
204 DEBUGFS_ADD(tx_retry_failed);
205 DEBUGFS_ADD(tx_retry_count);
206 DEBUGFS_ADD(last_signal);
207 DEBUGFS_ADD(last_noise);
208 DEBUGFS_ADD(wep_weak_iv_count);
211 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
213 debugfs_remove_recursive(sta->debugfs.dir);
214 sta->debugfs.dir = NULL;