1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 25 Jun 2022 21:25:40 +0200
Subject: [PATCH] mac80211: add debugfs file to display per-phy AQL pending
airtime
Now that the global pending airtime is more relevant for airtime fairness,
it makes sense to make it accessible via debugfs for debugging
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -201,6 +201,36 @@ static const struct file_operations airt
.llseek = default_llseek,
};
+static ssize_t aql_pending_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ieee80211_local *local = file->private_data;
+ char buf[400];
+ int len = 0;
+
+ len = scnprintf(buf, sizeof(buf),
+ "AC AQL pending\n"
+ "VO %u us\n"
+ "VI %u us\n"
+ "BE %u us\n"
+ "BK %u us\n"
+ "total %u us\n",
+ atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]),
+ atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]),
+ atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]),
+ atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]),
+ atomic_read(&local->aql_total_pending_airtime));
+ return simple_read_from_buffer(user_buf, count, ppos,
+ buf, len);
+}
+
+static const struct file_operations aql_pending_ops = {
+ .read = aql_pending_read,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
static ssize_t aql_txq_limit_read(struct file *file,
char __user *user_buf,
size_t count,
@@ -628,6 +658,7 @@ void debugfs_hw_add(struct ieee80211_loc
DEBUGFS_ADD(hw_conf);
DEBUGFS_ADD_MODE(force_tx_status, 0600);
DEBUGFS_ADD_MODE(aql_enable, 0600);
+ DEBUGFS_ADD(aql_pending);
if (local->ops->wake_tx_queue)
DEBUGFS_ADD_MODE(aqm, 0600);
|
