blob: ccc36120cd6e1574f1143670fbd10056fa205d07 (
plain)
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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
# shellcheck shell=bash
# no need for shebang - this file is loaded from charts.d.plugin
# SPDX-License-Identifier: GPL-3.0-or-later
# netdata
# real-time performance and health monitoring, done right!
# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
#
# _update_every is a special variable - it holds the number of seconds
# between the calls of the _update() function
ap_update_every=
ap_priority=6900
declare -A ap_devs=()
# _check is called once, to find out if this chart should be enabled or not
ap_check() {
require_cmd iw || return 1
local ev
ev=$(run iw dev | awk '
BEGIN {
i = "";
ssid = "";
ap = 0;
}
/^[ \t]+Interface / {
if( ap == 1 ) {
print "ap_devs[" i "]=\"" ssid "\""
}
i = $2;
ssid = "";
ap = 0;
}
/^[ \t]+ssid / { ssid = $2; }
/^[ \t]+type AP$/ { ap = 1; }
END {
if( ap == 1 ) {
print "ap_devs[" i "]=\"" ssid "\""
}
}
')
eval "${ev}"
# this should return:
# - 0 to enable the chart
# - 1 to disable the chart
[ ${#ap_devs[@]} -gt 0 ] && return 0
error "no devices found in AP mode, with 'iw dev'"
return 1
}
# _create is called once, to create the charts
ap_create() {
local ssid dev
for dev in "${!ap_devs[@]}"
do
ssid="${ap_devs[${dev}]}"
# create the chart with 3 dimensions
cat <<EOF
CHART ap_clients.${dev} '' "Connected clients to ${ssid} on ${dev}" "clients" ${dev} ap.clients line $((ap_priority + 1)) $ap_update_every
DIMENSION clients '' absolute 1 1
CHART ap_bandwidth.${dev} '' "Bandwidth for ${ssid} on ${dev}" "kilobits/s" ${dev} ap.net area $((ap_priority + 2)) $ap_update_every
DIMENSION received '' incremental 8 1024
DIMENSION sent '' incremental -8 1024
CHART ap_packets.${dev} '' "Packets for ${ssid} on ${dev}" "packets/s" ${dev} ap.packets line $((ap_priority + 3)) $ap_update_every
DIMENSION received '' incremental 1 1
DIMENSION sent '' incremental -1 1
CHART ap_issues.${dev} '' "Transmit Issues for ${ssid} on ${dev}" "issues/s" ${dev} ap.issues line $((ap_priority + 4)) $ap_update_every
DIMENSION retries 'tx retries' incremental 1 1
DIMENSION failures 'tx failures' incremental -1 1
CHART ap_signal.${dev} '' "Average Signal for ${ssid} on ${dev}" "dBm" ${dev} ap.signal line $((ap_priority + 5)) $ap_update_every
DIMENSION signal 'average signal' absolute 1 1000
CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $((ap_priority + 6)) $ap_update_every
DIMENSION receive '' absolute 1 1000
DIMENSION transmit '' absolute -1 1000
DIMENSION expected 'expected throughput' absolute 1 1000
EOF
done
return 0
}
# _update is called continuously, to collect the values
ap_update() {
# the first argument to this function is the microseconds since last update
# pass this parameter to the BEGIN statement (see bellow).
# do all the work to collect / calculate the values
# for each dimension
# remember: KEEP IT SIMPLE AND SHORT
for dev in "${!ap_devs[@]}"
do
echo
echo "DEVICE ${dev}"
iw "${dev}" station dump
done | awk "
function zero_data() {
dev = \"\";
c = 0;
rb = 0;
tb = 0;
rp = 0;
tp = 0;
tr = 0;
tf = 0;
tt = 0;
rt = 0;
s = 0;
g = 0;
e = 0;
}
function print_device() {
if(dev != \"\" && length(dev) > 0) {
print \"BEGIN ap_clients.\" dev;
print \"SET clients = \" c;
print \"END\";
print \"BEGIN ap_bandwidth.\" dev;
print \"SET received = \" rb;
print \"SET sent = \" tb;
print \"END\";
print \"BEGIN ap_packets.\" dev;
print \"SET received = \" rp;
print \"SET sent = \" tp;
print \"END\";
print \"BEGIN ap_issues.\" dev;
print \"SET retries = \" tr;
print \"SET failures = \" tf;
print \"END\";
if( c == 0 ) c = 1;
print \"BEGIN ap_signal.\" dev;
print \"SET signal = \" int(s / c);
print \"END\";
print \"BEGIN ap_bitrate.\" dev;
print \"SET receive = \" int(rt / c);
print \"SET transmit = \" int(tt / c);
print \"SET expected = \" int(e / c);
print \"END\";
}
zero_data();
}
BEGIN {
zero_data();
}
/^DEVICE / {
print_device();
dev = \$2;
}
/^Station/ { c++; }
/^[ \\t]+rx bytes:/ { rb += \$3; }
/^[ \\t]+tx bytes:/ { tb += \$3; }
/^[ \\t]+rx packets:/ { rp += \$3; }
/^[ \\t]+tx packets:/ { tp += \$3; }
/^[ \\t]+tx retries:/ { tr += \$3; }
/^[ \\t]+tx failed:/ { tf += \$3; }
/^[ \\t]+signal:/ { x = \$2; s += x * 1000; }
/^[ \\t]+rx bitrate:/ { x = \$3; rt += x * 1000; }
/^[ \\t]+tx bitrate:/ { x = \$3; tt += x * 1000; }
/^[ \\t]+expected throughput:(.*)Mbps/ {
x=\$3;
sub(/Mbps/, \"\", x);
e += x * 1000;
}
END {
print_device();
}
"
return 0
}
|
