summaryrefslogtreecommitdiff
path: root/package/qos-scripts/files/usr/lib/qos/generate.sh
blob: 7715a452f99ce2ebbcc7d2f7b5a7c7bd5cb0daa8 (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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
#!/bin/sh
[ -e /etc/functions.sh ] && . /etc/functions.sh || . ./functions.sh
[ -x /sbin/modprobe ] && insmod="modprobe" || insmod="insmod"

add_insmod() {
	eval "export isset=\${insmod_$1}"
	case "$isset" in
		1) ;;
		*) append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1;;
	esac
}

[ -e /etc/config/network ] && {
	# only try to parse network config on openwrt

	find_ifname() {(
		include /lib/network
		scan_interfaces
		config_get "$1" ifname
	)}
} || {
	find_ifname() {
		echo "Interface not found."
		exit 1
	}
}

parse_matching_rule() {
	local var="$1"
	local section="$2"
	local options="$3"
	local prefix="$4"
	local suffix="$5"
	local proto="$6"
	local mport=""
	local ports=""

	append "$var" "$prefix" "$N"
	for option in $options; do
		case "$option" in
			proto) config_get value "$section" proto; proto="${proto:-$value}";;
		esac
	done
	config_get type "$section" TYPE
	case "$type" in
		classify) unset pkt; append "$var" "-m mark --mark 0";;
		default) pkt=1; append "$var" "-m mark --mark 0";;
		reclassify) pkt=1;;
	esac
	append "$var" "${proto:+-p $proto}"
	for option in $options; do
		config_get value "$section" "$option"
		
		case "$pkt:$option" in
			*:srchost)
				append "$var" "-s $value"
			;;
			*:dsthost)
				append "$var" "-d $value"
			;;
			*:ipp2p)
				add_insmod ipt_ipp2p
				append "$var" "-m ipp2p"
				case "$value" in
					all) append "$var" "--edk --dc --kazaa --gnu --bit";;
					*) append "$var" "--$value";;
				esac
			;;
			*:layer7)
				add_insmod ipt_layer7
				append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
			;;
			*:ports|*:srcports|*:dstports)
				value="$(echo "$value" | sed -e 's,-,:,g')"
				lproto=${lproto:-tcp}
				case "$proto" in
					""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
					*) unset "$var"; return 0;;
				esac
				case "$option" in
					ports)
						config_set "$section" srcports ""
						config_set "$section" dstports ""
						config_set "$section" portrange ""
						append "$var" "--ports $value"
					;;
					srcports)
						config_set "$section" ports ""
						config_set "$section" dstports ""
						config_set "$section" portrange ""
						append "$var" "--sports $value"
					;;
					dstports)
						config_set "$section" ports ""
						config_set "$section" srcports ""
						config_set "$section" portrange ""
						append "$var" "--dports $value"
					;;
				esac
				ports=1
			;;
			*:portrange)
				config_set "$section" ports ""
				config_set "$section" srcports ""
				config_set "$section" dstports ""
				value="$(echo "$value" | sed -e 's,-,:,g')"
				case "$proto" in
					""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
					*) unset "$var"; return 0;;
				esac
				ports=1
			;;
			1:pktsize)
				value="$(echo "$value" | sed -e 's,-,:,g')"
				add_insmod ipt_length
				append "$var" "-m length --length $value"
			;;
			1:limit)
				add_insmod ipt_limit
				append "$var" "-m limit --limit $value"
			;;
			1:tcpflags)
				case "$proto" in
					tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
					*) unset $var; return 0;;
				esac
			;;
			1:mark)
				config_get class "${value##!}" classnr
				[ -z "$class" ] && continue;
				case "$value" in
					!*) append "$var" "-m mark ! --mark $class";;
					*) append "$var" "-m mark --mark $class";;
				esac
		esac
	done
	append "$var" "$suffix"
	case "$ports:$proto" in
		1:)	parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
	esac
}

config_cb() {
	option_cb() {
		return 0
	}

	# Section start
	case "$1" in
		interface)
			config_set "$1" "classgroup" "Default"
			config_set "$1" "upload" "128"
		;;
		classify|default|reclassify)
			option_cb() {
				append options "$1"
			}
		;;
	esac

    # Section end
	config_get TYPE "$CONFIG_SECTION" TYPE
	case "$TYPE" in
		interface)
			config_get enabled "$CONFIG_SECTION" enabled
			config_get download "$CONFIG_SECTION" download
			config_get classgroup "$CONFIG_SECTION" classgroup
			config_set "$CONFIG_SECTION" imqdev "$C"
			[ -z "$enabled" -o "$(($enabled))" -eq 0 ] || {
				C=$(($C+1))
				INTERFACES="$INTERFACES $CONFIG_SECTION"
				config_set "$classgroup" enabled 1
			}
			config_get device "$CONFIG_SECTION" device
			[ -z "$device" ] && device="$(find_ifname ${CONFIG_SECTION})"
			config_set "$CONFIG_SECTION" device "${device:-eth0}"
		;;
		classgroup) append CG "$CONFIG_SECTION";;
		classify|default|reclassify)
			case "$TYPE" in
				classify) var="ctrules";;
				*) var="rules";;
			esac
			config_get target "$CONFIG_SECTION" target
			config_set "$CONFIG_SECTION" options "$options"
			append "$var" "$CONFIG_SECTION"
			unset options
		;;
	esac
}


enum_classes() {
	local c="0"
	config_get classes "$1" classes
	config_get default "$1" default
	for class in $classes; do
		c="$(($c + 1))"
		config_set "${class}" classnr $c
		case "$class" in
			$default) class_default=$c;;
		esac
	done
	class_default="${class_default:-$c}"
}

cls_var() {
	local varname="$1"
	local class="$2"
	local name="$3"
	local type="$4"
	local default="$5"
	local tmp tmp1 tmp2
	config_get tmp1 "$class" "$name"
	config_get tmp2 "${class}_${type}" "$name"
	tmp="${tmp2:-$tmp1}"
	tmp="${tmp:-$tmp2}"
	export ${varname}="${tmp:-$default}"
}

tcrules() {
	dir=/usr/lib/qos
	[ -e $dir/tcrules.awk ] || dir=.
	echo "$cstr" | awk \
		-v device="$dev" \
		-v linespeed="$rate" \
		-f $dir/tcrules.awk
}

start_interface() {
	local iface="$1"
	local num_imq="$2"
	config_get device "$iface" device
	config_get enabled "$iface" enabled
	[ -z "$device" -o -z "$enabled" ] && exit
	config_get upload "$iface" upload
	config_get halfduplex "$iface" halfduplex
	config_get download "$iface" download
	config_get classgroup "$iface" classgroup
	
	download="${download:-${halfduplex:+$upload}}"
	enum_classes "$classgroup"
	for dir in up${halfduplex} ${download:+down}; do
		case "$dir" in
			up)
				upload=$(($upload * 98 / 100 - (32 * 128 / $upload)))
				dev="$device"
				rate="$upload"
				dl_mode=""
				prefix="cls"
			;;
			down)
				add_insmod imq numdevs="$num_imq"
				config_get imqdev "$iface" imqdev
				download=$(($download * 98 / 100 - (100 * 1024 / $download)))
				dev="imq$imqdev"
				rate="$download"
				dl_mode=1
				prefix="d_cls"
			;;
			*) continue;;
		esac
		cstr=
		for class in $classes; do
			cls_var pktsize "$class" packetsize $dir 1500
			cls_var pktdelay "$class" packetdelay $dir 0
			cls_var maxrate "$class" limitrate $dir 100
			cls_var prio "$class" priority $dir 1
			cls_var avgrate "$class" avgrate $dir 0
			config_get classnr "$class" classnr
			append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate" "$N"
		done
		append ${prefix}q "$(tcrules)" "$N"
		export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
tc qdisc del dev $dev root >&- 2>&-
tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
	done
	add_insmod cls_fw
	add_insmod sch_hfsc
	add_insmod sch_sfq
	add_insmod sch_red

	cat <<EOF
${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
$clsq
}${imqdev:+$dev_down
$d_clsq
$d_clsl
$d_clsf
}
EOF
	unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
}

start_interfaces() {
	local C="$1"
	for iface in $INTERFACES; do
		start_interface "$iface" "$C"
	done
}

add_rules() {
	local var="$1"
	local rules="$2"
	local prefix="$3"
	
	for rule in $rules; do
		unset iptrule
		config_get target "$rule" target
		config_get target "$target" classnr
		config_get options "$rule" options
		parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
		append "$var" "$iptrule" "$N"
	done
}

start_cg() {
	local cg="$1"
	local iptrules
	local pktrules
	local sizerules
	local download
	enum_classes "$cg"
	add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
	config_get classes "$cg" classes
	for class in $classes; do
		config_get mark "$class" classnr
		config_get maxsize "$class" maxsize
		[ -z "$maxsize" -o -z "$mark" ] || {
			add_insmod ipt_length
			append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
		}
	done
	add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
	for iface in $INTERFACES; do
		config_get classgroup "$iface" classgroup
		config_get device "$iface" device
		config_get imqdev "$iface" imqdev
		config_get dl "$iface" download
		config_get halfduplex "$iface" halfduplex
		add_insmod ipt_IMQ
		append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
		append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
		[ -z "$dl" ] || {
			[ -z "$halfduplex" ] || {
				append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
			}
			append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
			append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
		}
	done
	cat <<EOF
$INSMOD
iptables -t mangle -N ${cg} >&- 2>&-
iptables -t mangle -N ${cg}_ct >&- 2>&-
${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
$pktrules
$up$N${down:+${down}$N}
EOF
	unset INSMOD
}

start_firewall() {
	add_insmod ipt_multiport
	add_insmod ipt_CONNMARK
	cat <<EOF
iptables -t mangle -F
iptables -t mangle -X
EOF
	for group in $CG; do
		start_cg $group
	done
}

C="0"
INTERFACES=""
[ -e ./qos.conf ] && {
	. ./qos.conf
	config_cb
} || config_load qos

C="0"
for iface in $INTERFACES; do
	export C="$(($C + 1))"
done

case "$1" in
	all)
		start_interfaces "$C"
		start_firewall
	;;
	interface)
		start_interface "$2" "$C"
	;;
	interfaces)
		start_interfaces
	;;
	firewall)
		start_firewall
	;;
esac