2 * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
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.
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>
13 #include <net/mac80211.h>
14 #include "rc80211_minstrel.h"
15 #include "rc80211_minstrel_ht.h"
18 minstrel_ht_stats_open(struct inode
*inode
, struct file
*file
)
20 struct minstrel_ht_sta_priv
*msp
= inode
->i_private
;
21 struct minstrel_ht_sta
*mi
= &msp
->ht
;
22 struct minstrel_debugfs_info
*ms
;
23 unsigned int i
, j
, tp
, prob
, eprob
;
28 inode
->i_private
= &msp
->legacy
;
29 ret
= minstrel_stats_open(inode
, file
);
30 inode
->i_private
= msp
;
34 ms
= kmalloc(sizeof(*ms
) + 8192, GFP_KERNEL
);
38 file
->private_data
= ms
;
40 p
+= sprintf(p
, "type rate throughput ewma prob this prob "
41 "this succ/attempt success attempts\n");
42 for (i
= 0; i
< MINSTREL_MAX_STREAMS
* MINSTREL_STREAM_GROUPS
; i
++) {
46 if (!mi
->groups
[i
].supported
)
49 if (minstrel_mcs_groups
[i
].flags
& IEEE80211_TX_RC_40_MHZ_WIDTH
)
51 if (minstrel_mcs_groups
[i
].flags
& IEEE80211_TX_RC_SHORT_GI
)
54 for (j
= 0; j
< MCS_GROUP_RATES
; j
++) {
55 struct minstrel_rate_stats
*mr
= &mi
->groups
[i
].rates
[j
];
56 int idx
= i
* MCS_GROUP_RATES
+ j
;
58 if (!(mi
->groups
[i
].supported
& BIT(j
)))
61 p
+= sprintf(p
, "HT%c0/%cGI ", htmode
, gimode
);
63 *(p
++) = (idx
== mi
->max_tp_rate
) ? 'T' : ' ';
64 *(p
++) = (idx
== mi
->max_tp_rate2
) ? 't' : ' ';
65 *(p
++) = (idx
== mi
->max_prob_rate
) ? 'P' : ' ';
66 p
+= sprintf(p
, "MCS%-2u", (minstrel_mcs_groups
[i
].streams
- 1) *
70 prob
= MINSTREL_TRUNC(mr
->cur_prob
* 1000);
71 eprob
= MINSTREL_TRUNC(mr
->probability
* 1000);
73 p
+= sprintf(p
, " %6u.%1u %6u.%1u %6u.%1u "
74 "%3u(%3u) %8llu %8llu\n",
76 eprob
/ 10, eprob
% 10,
80 (unsigned long long)mr
->succ_hist
,
81 (unsigned long long)mr
->att_hist
);
84 p
+= sprintf(p
, "\nTotal packet count:: ideal %d "
86 max(0, (int) mi
->total_packets
- (int) mi
->sample_packets
),
88 p
+= sprintf(p
, "Average A-MPDU length: %d.%d\n",
89 MINSTREL_TRUNC(mi
->avg_ampdu_len
),
90 MINSTREL_TRUNC(mi
->avg_ampdu_len
* 10) % 10);
91 ms
->len
= p
- ms
->buf
;
93 return nonseekable_open(inode
, file
);
96 static const struct file_operations minstrel_ht_stat_fops
= {
98 .open
= minstrel_ht_stats_open
,
99 .read
= minstrel_stats_read
,
100 .release
= minstrel_stats_release
,
105 minstrel_ht_add_sta_debugfs(void *priv
, void *priv_sta
, struct dentry
*dir
)
107 struct minstrel_ht_sta_priv
*msp
= priv_sta
;
109 msp
->dbg_stats
= debugfs_create_file("rc_stats", S_IRUGO
, dir
, msp
,
110 &minstrel_ht_stat_fops
);
114 minstrel_ht_remove_sta_debugfs(void *priv
, void *priv_sta
)
116 struct minstrel_ht_sta_priv
*msp
= priv_sta
;
118 debugfs_remove(msp
->dbg_stats
);