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e9f207f0 JB |
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 | ||
e9f207f0 JB |
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, \ | |
40 | } | |
41 | ||
42 | #define STA_FILE(name, field, format) \ | |
43 | STA_READ_##format(name, field) \ | |
44 | STA_OPS(name) | |
45 | ||
17741cdc | 46 | STA_FILE(aid, sta.aid, D); |
d0709a65 | 47 | STA_FILE(dev, sdata->dev->name, S); |
e9f207f0 JB |
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); | |
e9f207f0 JB |
57 | STA_FILE(tx_retry_failed, tx_retry_failed, LU); |
58 | STA_FILE(tx_retry_count, tx_retry_count, LU); | |
e9f207f0 JB |
59 | STA_FILE(last_signal, last_signal, D); |
60 | STA_FILE(last_noise, last_noise, D); | |
693b1bbc | 61 | STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU); |
e9f207f0 JB |
62 | |
63 | static ssize_t sta_flags_read(struct file *file, char __user *userbuf, | |
64 | size_t count, loff_t *ppos) | |
65 | { | |
66 | char buf[100]; | |
67 | struct sta_info *sta = file->private_data; | |
07346f81 | 68 | u32 staflags = get_sta_flags(sta); |
af818581 | 69 | int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", |
07346f81 JB |
70 | staflags & WLAN_STA_AUTH ? "AUTH\n" : "", |
71 | staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "", | |
af818581 JB |
72 | staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "", |
73 | staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "", | |
07346f81 JB |
74 | staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", |
75 | staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", | |
76 | staflags & WLAN_STA_WME ? "WME\n" : "", | |
5394af4d JM |
77 | staflags & WLAN_STA_WDS ? "WDS\n" : "", |
78 | staflags & WLAN_STA_MFP ? "MFP\n" : ""); | |
e9f207f0 JB |
79 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
80 | } | |
81 | STA_OPS(flags); | |
82 | ||
83 | static ssize_t sta_num_ps_buf_frames_read(struct file *file, | |
84 | char __user *userbuf, | |
85 | size_t count, loff_t *ppos) | |
86 | { | |
87 | char buf[20]; | |
88 | struct sta_info *sta = file->private_data; | |
89 | int res = scnprintf(buf, sizeof(buf), "%u\n", | |
90 | skb_queue_len(&sta->ps_tx_buf)); | |
91 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
92 | } | |
93 | STA_OPS(num_ps_buf_frames); | |
94 | ||
e9f207f0 JB |
95 | static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, |
96 | size_t count, loff_t *ppos) | |
97 | { | |
98 | char buf[20]; | |
99 | struct sta_info *sta = file->private_data; | |
100 | int res = scnprintf(buf, sizeof(buf), "%d\n", | |
101 | jiffies_to_msecs(jiffies - sta->last_rx)); | |
102 | return simple_read_from_buffer(userbuf, count, ppos, buf, res); | |
103 | } | |
104 | STA_OPS(inactive_ms); | |
105 | ||
106 | static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, | |
107 | size_t count, loff_t *ppos) | |
108 | { | |
109 | char buf[15*NUM_RX_DATA_QUEUES], *p = buf; | |
110 | int i; | |
111 | struct sta_info *sta = file->private_data; | |
112 | for (i = 0; i < NUM_RX_DATA_QUEUES; i++) | |
113 | p += scnprintf(p, sizeof(buf)+buf-p, "%x ", | |
ba9b07d0 | 114 | le16_to_cpu(sta->last_seq_ctrl[i])); |
e9f207f0 JB |
115 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); |
116 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
117 | } | |
118 | STA_OPS(last_seq_ctrl); | |
119 | ||
eb2ba62e RR |
120 | static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, |
121 | size_t count, loff_t *ppos) | |
122 | { | |
386aa23d | 123 | char buf[30 + STA_TID_NUM * 70], *p = buf; |
eb2ba62e RR |
124 | int i; |
125 | struct sta_info *sta = file->private_data; | |
eb2ba62e | 126 | |
386aa23d JB |
127 | spin_lock_bh(&sta->lock); |
128 | p += scnprintf(p, sizeof(buf)+buf-p, "next dialog_token is %#02x\n", | |
129 | sta->ampdu_mlme.dialog_token_allocator + 1); | |
130 | for (i = 0; i < STA_TID_NUM; i++) { | |
131 | p += scnprintf(p, sizeof(buf)+buf-p, "TID %02d:", i); | |
132 | p += scnprintf(p, sizeof(buf)+buf-p, " RX=%x", | |
133 | sta->ampdu_mlme.tid_state_rx[i]); | |
134 | p += scnprintf(p, sizeof(buf)+buf-p, "/DTKN=%#.2x", | |
135 | sta->ampdu_mlme.tid_state_rx[i] ? | |
136 | sta->ampdu_mlme.tid_rx[i]->dialog_token : 0); | |
137 | p += scnprintf(p, sizeof(buf)+buf-p, "/SSN=%#.3x", | |
138 | sta->ampdu_mlme.tid_state_rx[i] ? | |
139 | sta->ampdu_mlme.tid_rx[i]->ssn : 0); | |
140 | ||
141 | p += scnprintf(p, sizeof(buf)+buf-p, " TX=%x", | |
142 | sta->ampdu_mlme.tid_state_tx[i]); | |
143 | p += scnprintf(p, sizeof(buf)+buf-p, "/DTKN=%#.2x", | |
144 | sta->ampdu_mlme.tid_state_tx[i] ? | |
145 | sta->ampdu_mlme.tid_tx[i]->dialog_token : 0); | |
146 | p += scnprintf(p, sizeof(buf)+buf-p, "/SSN=%#.3x", | |
147 | sta->ampdu_mlme.tid_state_tx[i] ? | |
148 | sta->ampdu_mlme.tid_tx[i]->ssn : 0); | |
149 | p += scnprintf(p, sizeof(buf)+buf-p, "/pending=%03d", | |
150 | sta->ampdu_mlme.tid_state_tx[i] ? | |
151 | skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0); | |
152 | p += scnprintf(p, sizeof(buf)+buf-p, "\n"); | |
153 | } | |
154 | spin_unlock_bh(&sta->lock); | |
eb2ba62e RR |
155 | |
156 | return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); | |
157 | } | |
804feeb8 | 158 | STA_OPS(agg_status); |
eb2ba62e | 159 | |
e9f207f0 | 160 | #define DEBUGFS_ADD(name) \ |
7bcfaf2f | 161 | debugfs_create_file(#name, 0400, \ |
e9f207f0 JB |
162 | sta->debugfs.dir, sta, &sta_ ##name## _ops); |
163 | ||
e9f207f0 JB |
164 | |
165 | void ieee80211_sta_debugfs_add(struct sta_info *sta) | |
166 | { | |
e9f207f0 | 167 | struct dentry *stations_dir = sta->local->debugfs.stations; |
0c68ae26 | 168 | u8 mac[3*ETH_ALEN]; |
e9f207f0 | 169 | |
63044e9f JB |
170 | sta->debugfs.add_has_run = true; |
171 | ||
e9f207f0 JB |
172 | if (!stations_dir) |
173 | return; | |
174 | ||
0c68ae26 | 175 | snprintf(mac, sizeof(mac), "%pM", sta->sta.addr); |
e9f207f0 | 176 | |
63044e9f JB |
177 | /* |
178 | * This might fail due to a race condition: | |
179 | * When mac80211 unlinks a station, the debugfs entries | |
180 | * remain, but it is already possible to link a new | |
181 | * station with the same address which triggers adding | |
182 | * it to debugfs; therefore, if the old station isn't | |
183 | * destroyed quickly enough the old station's debugfs | |
184 | * dir might still be around. | |
185 | */ | |
0795af57 | 186 | sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); |
e9f207f0 JB |
187 | if (!sta->debugfs.dir) |
188 | return; | |
189 | ||
190 | DEBUGFS_ADD(flags); | |
191 | DEBUGFS_ADD(num_ps_buf_frames); | |
e9f207f0 JB |
192 | DEBUGFS_ADD(inactive_ms); |
193 | DEBUGFS_ADD(last_seq_ctrl); | |
eb2ba62e | 194 | DEBUGFS_ADD(agg_status); |
386aa23d JB |
195 | DEBUGFS_ADD(dev); |
196 | DEBUGFS_ADD(rx_packets); | |
197 | DEBUGFS_ADD(tx_packets); | |
198 | DEBUGFS_ADD(rx_bytes); | |
199 | DEBUGFS_ADD(tx_bytes); | |
200 | DEBUGFS_ADD(rx_duplicates); | |
201 | DEBUGFS_ADD(rx_fragments); | |
202 | DEBUGFS_ADD(rx_dropped); | |
203 | DEBUGFS_ADD(tx_fragments); | |
204 | DEBUGFS_ADD(tx_filtered); | |
205 | DEBUGFS_ADD(tx_retry_failed); | |
206 | DEBUGFS_ADD(tx_retry_count); | |
207 | DEBUGFS_ADD(last_signal); | |
386aa23d JB |
208 | DEBUGFS_ADD(last_noise); |
209 | DEBUGFS_ADD(wep_weak_iv_count); | |
e9f207f0 JB |
210 | } |
211 | ||
212 | void ieee80211_sta_debugfs_remove(struct sta_info *sta) | |
213 | { | |
7bcfaf2f | 214 | debugfs_remove_recursive(sta->debugfs.dir); |
e9f207f0 JB |
215 | sta->debugfs.dir = NULL; |
216 | } |