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ec8aa669 FF |
1 | /* |
2 | * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #include <linux/netdevice.h> | |
9 | #include <linux/types.h> | |
10 | #include <linux/skbuff.h> | |
11 | #include <linux/debugfs.h> | |
12 | #include <linux/ieee80211.h> | |
bc3b2d7f | 13 | #include <linux/export.h> |
ec8aa669 FF |
14 | #include <net/mac80211.h> |
15 | #include "rc80211_minstrel.h" | |
16 | #include "rc80211_minstrel_ht.h" | |
17 | ||
a0497f9f FF |
18 | static char * |
19 | minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p) | |
20 | { | |
a0497f9f | 21 | const struct mcs_group *mg; |
1109dc39 | 22 | unsigned int j, tp_max, tp_avg, eprob, tx_time; |
a0497f9f FF |
23 | char htmode = '2'; |
24 | char gimode = 'L'; | |
8ec7886b | 25 | u32 gflags; |
a0497f9f | 26 | |
41d08583 | 27 | if (!mi->supported[i]) |
a0497f9f FF |
28 | return p; |
29 | ||
30 | mg = &minstrel_mcs_groups[i]; | |
8ec7886b KB |
31 | gflags = mg->flags; |
32 | ||
33 | if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
a0497f9f | 34 | htmode = '4'; |
8ec7886b | 35 | else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH) |
9208247d | 36 | htmode = '8'; |
8ec7886b | 37 | if (gflags & IEEE80211_TX_RC_SHORT_GI) |
a0497f9f FF |
38 | gimode = 'S'; |
39 | ||
40 | for (j = 0; j < MCS_GROUP_RATES; j++) { | |
9134073b | 41 | struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j]; |
a0497f9f FF |
42 | static const int bitrates[4] = { 10, 20, 55, 110 }; |
43 | int idx = i * MCS_GROUP_RATES + j; | |
4f0bc9c6 | 44 | unsigned int prob_ewmsd; |
a0497f9f | 45 | |
41d08583 | 46 | if (!(mi->supported[i] & BIT(j))) |
a0497f9f FF |
47 | continue; |
48 | ||
9c00bb72 TH |
49 | if (gflags & IEEE80211_TX_RC_MCS) { |
50 | p += sprintf(p, "HT%c0 ", htmode); | |
51 | p += sprintf(p, "%cGI ", gimode); | |
52 | p += sprintf(p, "%d ", mg->streams); | |
53 | } else if (gflags & IEEE80211_TX_RC_VHT_MCS) { | |
54 | p += sprintf(p, "VHT%c0 ", htmode); | |
55 | p += sprintf(p, "%cGI ", gimode); | |
56 | p += sprintf(p, "%d ", mg->streams); | |
57 | } else { | |
58 | p += sprintf(p, "CCK "); | |
59 | p += sprintf(p, "%cP ", j < 4 ? 'L' : 'S'); | |
60 | p += sprintf(p, "1 "); | |
61 | } | |
a0497f9f | 62 | |
5935839a TH |
63 | *(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' '; |
64 | *(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' '; | |
65 | *(p++) = (idx == mi->max_tp_rate[2]) ? 'C' : ' '; | |
66 | *(p++) = (idx == mi->max_tp_rate[3]) ? 'D' : ' '; | |
a0497f9f FF |
67 | *(p++) = (idx == mi->max_prob_rate) ? 'P' : ' '; |
68 | ||
8ec7886b | 69 | if (gflags & IEEE80211_TX_RC_MCS) { |
9c00bb72 | 70 | p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j); |
8ec7886b | 71 | } else if (gflags & IEEE80211_TX_RC_VHT_MCS) { |
9c00bb72 | 72 | p += sprintf(p, " MCS%-1u/%1u", j, mg->streams); |
a0497f9f | 73 | } else { |
8ec7886b KB |
74 | int r = bitrates[j % 4]; |
75 | ||
9c00bb72 | 76 | p += sprintf(p, " %2u.%1uM", r / 10, r % 10); |
a0497f9f FF |
77 | } |
78 | ||
9c00bb72 TH |
79 | p += sprintf(p, " %3u ", idx); |
80 | ||
81 | /* tx_time[rate(i)] in usec */ | |
82 | tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000); | |
50e55a8e | 83 | p += sprintf(p, "%6u ", tx_time); |
9c00bb72 | 84 | |
50e55a8e TH |
85 | tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100)); |
86 | tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma); | |
9134073b | 87 | eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); |
4f0bc9c6 | 88 | prob_ewmsd = minstrel_get_ewmsd10(mrs); |
a0497f9f | 89 | |
a0c391b1 | 90 | p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u %3u.%1u" |
1109dc39 | 91 | " %3u %3u %-3u " |
5f919abc | 92 | "%9llu %-9llu\n", |
50e55a8e | 93 | tp_max / 10, tp_max % 10, |
6a27b2c4 | 94 | tp_avg / 10, tp_avg % 10, |
a0497f9f | 95 | eprob / 10, eprob % 10, |
4f0bc9c6 | 96 | prob_ewmsd / 10, prob_ewmsd % 10, |
9134073b TH |
97 | mrs->retry_count, |
98 | mrs->last_success, | |
99 | mrs->last_attempts, | |
100 | (unsigned long long)mrs->succ_hist, | |
101 | (unsigned long long)mrs->att_hist); | |
a0497f9f FF |
102 | } |
103 | ||
104 | return p; | |
105 | } | |
106 | ||
ec8aa669 FF |
107 | static int |
108 | minstrel_ht_stats_open(struct inode *inode, struct file *file) | |
109 | { | |
110 | struct minstrel_ht_sta_priv *msp = inode->i_private; | |
111 | struct minstrel_ht_sta *mi = &msp->ht; | |
112 | struct minstrel_debugfs_info *ms; | |
a0497f9f | 113 | unsigned int i; |
ec8aa669 | 114 | int ret; |
2cae0b6a | 115 | char *p; |
ec8aa669 FF |
116 | |
117 | if (!msp->is_ht) { | |
118 | inode->i_private = &msp->legacy; | |
119 | ret = minstrel_stats_open(inode, file); | |
120 | inode->i_private = msp; | |
121 | return ret; | |
122 | } | |
123 | ||
9208247d | 124 | ms = kmalloc(32768, GFP_KERNEL); |
ec8aa669 FF |
125 | if (!ms) |
126 | return -ENOMEM; | |
127 | ||
128 | file->private_data = ms; | |
129 | p = ms->buf; | |
9c00bb72 TH |
130 | |
131 | p += sprintf(p, "\n"); | |
a0c391b1 | 132 | p += sprintf(p, |
1109dc39 | 133 | " best ____________rate__________ ________statistics________ _____last____ ______sum-of________\n"); |
a0c391b1 | 134 | p += sprintf(p, |
1109dc39 | 135 | "mode guard # rate [name idx airtime max_tp] [avg(tp) avg(prob) sd(prob)] [retry|suc|att] [#success | #attempts]\n"); |
11b2357d | 136 | |
8a0ee4fe KB |
137 | p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p); |
138 | for (i = 0; i < MINSTREL_CCK_GROUP; i++) | |
a0497f9f | 139 | p = minstrel_ht_stats_dump(mi, i, p); |
9208247d KB |
140 | for (i++; i < ARRAY_SIZE(mi->groups); i++) |
141 | p = minstrel_ht_stats_dump(mi, i, p); | |
ec8aa669 | 142 | |
ec8aa669 FF |
143 | p += sprintf(p, "\nTotal packet count:: ideal %d " |
144 | "lookaround %d\n", | |
145 | max(0, (int) mi->total_packets - (int) mi->sample_packets), | |
146 | mi->sample_packets); | |
9c00bb72 | 147 | p += sprintf(p, "Average # of aggregated frames per A-MPDU: %d.%d\n", |
ec8aa669 FF |
148 | MINSTREL_TRUNC(mi->avg_ampdu_len), |
149 | MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); | |
150 | ms->len = p - ms->buf; | |
9208247d | 151 | WARN_ON(ms->len + sizeof(*ms) > 32768); |
11b2357d | 152 | |
a0572d93 | 153 | return nonseekable_open(inode, file); |
ec8aa669 FF |
154 | } |
155 | ||
156 | static const struct file_operations minstrel_ht_stat_fops = { | |
157 | .owner = THIS_MODULE, | |
158 | .open = minstrel_ht_stats_open, | |
159 | .read = minstrel_stats_read, | |
160 | .release = minstrel_stats_release, | |
a0572d93 | 161 | .llseek = no_llseek, |
ec8aa669 FF |
162 | }; |
163 | ||
2cae0b6a TH |
164 | static char * |
165 | minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p) | |
166 | { | |
167 | const struct mcs_group *mg; | |
1109dc39 | 168 | unsigned int j, tp_max, tp_avg, eprob, tx_time; |
2cae0b6a TH |
169 | char htmode = '2'; |
170 | char gimode = 'L'; | |
171 | u32 gflags; | |
172 | ||
41d08583 | 173 | if (!mi->supported[i]) |
2cae0b6a TH |
174 | return p; |
175 | ||
176 | mg = &minstrel_mcs_groups[i]; | |
177 | gflags = mg->flags; | |
178 | ||
179 | if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
180 | htmode = '4'; | |
181 | else if (gflags & IEEE80211_TX_RC_80_MHZ_WIDTH) | |
182 | htmode = '8'; | |
183 | if (gflags & IEEE80211_TX_RC_SHORT_GI) | |
184 | gimode = 'S'; | |
185 | ||
186 | for (j = 0; j < MCS_GROUP_RATES; j++) { | |
9134073b | 187 | struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j]; |
2cae0b6a TH |
188 | static const int bitrates[4] = { 10, 20, 55, 110 }; |
189 | int idx = i * MCS_GROUP_RATES + j; | |
4f0bc9c6 | 190 | unsigned int prob_ewmsd; |
2cae0b6a | 191 | |
41d08583 | 192 | if (!(mi->supported[i] & BIT(j))) |
2cae0b6a TH |
193 | continue; |
194 | ||
195 | if (gflags & IEEE80211_TX_RC_MCS) { | |
196 | p += sprintf(p, "HT%c0,", htmode); | |
197 | p += sprintf(p, "%cGI,", gimode); | |
198 | p += sprintf(p, "%d,", mg->streams); | |
199 | } else if (gflags & IEEE80211_TX_RC_VHT_MCS) { | |
200 | p += sprintf(p, "VHT%c0,", htmode); | |
201 | p += sprintf(p, "%cGI,", gimode); | |
202 | p += sprintf(p, "%d,", mg->streams); | |
203 | } else { | |
204 | p += sprintf(p, "CCK,"); | |
205 | p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S'); | |
206 | p += sprintf(p, "1,"); | |
207 | } | |
208 | ||
209 | p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[0]) ? "A" : "")); | |
210 | p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[1]) ? "B" : "")); | |
211 | p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[2]) ? "C" : "")); | |
212 | p += sprintf(p, "%s" ,((idx == mi->max_tp_rate[3]) ? "D" : "")); | |
213 | p += sprintf(p, "%s" ,((idx == mi->max_prob_rate) ? "P" : "")); | |
214 | ||
215 | if (gflags & IEEE80211_TX_RC_MCS) { | |
216 | p += sprintf(p, ",MCS%-2u,", (mg->streams - 1) * 8 + j); | |
217 | } else if (gflags & IEEE80211_TX_RC_VHT_MCS) { | |
218 | p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams); | |
219 | } else { | |
220 | int r = bitrates[j % 4]; | |
221 | p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10); | |
222 | } | |
223 | ||
224 | p += sprintf(p, "%u,", idx); | |
225 | tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000); | |
226 | p += sprintf(p, "%u,", tx_time); | |
227 | ||
50e55a8e TH |
228 | tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100)); |
229 | tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma); | |
9134073b | 230 | eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000); |
4f0bc9c6 | 231 | prob_ewmsd = minstrel_get_ewmsd10(mrs); |
2cae0b6a | 232 | |
1109dc39 | 233 | p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u,%u," |
5f919abc | 234 | "%u,%llu,%llu,", |
50e55a8e | 235 | tp_max / 10, tp_max % 10, |
6a27b2c4 | 236 | tp_avg / 10, tp_avg % 10, |
2cae0b6a | 237 | eprob / 10, eprob % 10, |
4f0bc9c6 | 238 | prob_ewmsd / 10, prob_ewmsd % 10, |
9134073b TH |
239 | mrs->retry_count, |
240 | mrs->last_success, | |
241 | mrs->last_attempts, | |
242 | (unsigned long long)mrs->succ_hist, | |
243 | (unsigned long long)mrs->att_hist); | |
2cae0b6a TH |
244 | p += sprintf(p, "%d,%d,%d.%d\n", |
245 | max(0, (int) mi->total_packets - | |
246 | (int) mi->sample_packets), | |
247 | mi->sample_packets, | |
248 | MINSTREL_TRUNC(mi->avg_ampdu_len), | |
249 | MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10); | |
250 | } | |
251 | ||
252 | return p; | |
253 | } | |
254 | ||
255 | static int | |
256 | minstrel_ht_stats_csv_open(struct inode *inode, struct file *file) | |
257 | { | |
258 | struct minstrel_ht_sta_priv *msp = inode->i_private; | |
259 | struct minstrel_ht_sta *mi = &msp->ht; | |
260 | struct minstrel_debugfs_info *ms; | |
261 | unsigned int i; | |
262 | int ret; | |
263 | char *p; | |
264 | ||
265 | if (!msp->is_ht) { | |
266 | inode->i_private = &msp->legacy; | |
267 | ret = minstrel_stats_csv_open(inode, file); | |
268 | inode->i_private = msp; | |
269 | return ret; | |
270 | } | |
271 | ||
272 | ms = kmalloc(32768, GFP_KERNEL); | |
273 | ||
274 | if (!ms) | |
275 | return -ENOMEM; | |
276 | ||
277 | file->private_data = ms; | |
278 | ||
279 | p = ms->buf; | |
280 | ||
281 | p = minstrel_ht_stats_csv_dump(mi, MINSTREL_CCK_GROUP, p); | |
282 | for (i = 0; i < MINSTREL_CCK_GROUP; i++) | |
283 | p = minstrel_ht_stats_csv_dump(mi, i, p); | |
284 | for (i++; i < ARRAY_SIZE(mi->groups); i++) | |
285 | p = minstrel_ht_stats_csv_dump(mi, i, p); | |
286 | ||
287 | ms->len = p - ms->buf; | |
288 | WARN_ON(ms->len + sizeof(*ms) > 32768); | |
289 | ||
290 | return nonseekable_open(inode, file); | |
291 | } | |
292 | ||
293 | static const struct file_operations minstrel_ht_stat_csv_fops = { | |
294 | .owner = THIS_MODULE, | |
295 | .open = minstrel_ht_stats_csv_open, | |
296 | .read = minstrel_stats_read, | |
297 | .release = minstrel_stats_release, | |
298 | .llseek = no_llseek, | |
299 | }; | |
300 | ||
ec8aa669 FF |
301 | void |
302 | minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir) | |
303 | { | |
304 | struct minstrel_ht_sta_priv *msp = priv_sta; | |
305 | ||
306 | msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp, | |
307 | &minstrel_ht_stat_fops); | |
2cae0b6a TH |
308 | msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", S_IRUGO, |
309 | dir, msp, &minstrel_ht_stat_csv_fops); | |
ec8aa669 FF |
310 | } |
311 | ||
312 | void | |
313 | minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta) | |
314 | { | |
315 | struct minstrel_ht_sta_priv *msp = priv_sta; | |
316 | ||
317 | debugfs_remove(msp->dbg_stats); | |
2cae0b6a | 318 | debugfs_remove(msp->dbg_stats_csv); |
ec8aa669 | 319 | } |