package/qos-scripts/files/usr/lib/qos/generate.sh

   1 #!/bin/sh
   2 [ -e /etc/functions.sh ] && . /etc/functions.sh || . ./functions.sh
   3 [ -x /sbin/modprobe ] && insmod="modprobe" || insmod="insmod"
   4
   5 add_insmod() {
   6         eval "export isset=\${insmod_$1}"
   7         case "$isset" in
   8                 1) ;;
   9                 *) append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1;;
  10         esac
  11 }
  12
  13 [ -e /etc/config/network ] && {
  14         # only try to parse network config on openwrt
  15
  16         find_ifname() {(
  17                 reset_cb
  18                 include /lib/network
  19                 scan_interfaces
  20                 config_get "$1" ifname
  21         )}
  22 } || {
  23         find_ifname() {
  24                 echo "Interface not found."
  25                 exit 1
  26         }
  27 }
  28
  29 parse_matching_rule() {
  30         local var="$1"
  31         local section="$2"
  32         local options="$3"
  33         local prefix="$4"
  34         local suffix="$5"
  35         local proto="$6"
  36         local mport=""
  37         local ports=""
  38
  39         append "$var" "$prefix" "$N"
  40         for option in $options; do
  41                 case "$option" in
  42                         proto) config_get value "$section" proto; proto="${proto:-$value}";;
  43                 esac
  44         done
  45         config_get type "$section" TYPE
  46         case "$type" in
  47                 classify) unset pkt; append "$var" "-m mark --mark 0";;
  48                 default) pkt=1; append "$var" "-m mark --mark 0";;
  49                 reclassify) pkt=1;;
  50         esac
  51         append "$var" "${proto:+-p $proto}"
  52         for option in $options; do
  53                 config_get value "$section" "$option"
  54
  55                 case "$pkt:$option" in
  56                         *:srchost)
  57                                 append "$var" "-s $value"
  58                         ;;
  59                         *:dsthost)
  60                                 append "$var" "-d $value"
  61                         ;;
  62                         *:ipp2p)
  63                                 add_insmod ipt_ipp2p
  64                                 append "$var" "-m ipp2p"
  65                                 case "$value" in
  66                                         all) append "$var" "--edk --dc --kazaa --gnu --bit";;
  67                                         *) append "$var" "--$value";;
  68                                 esac
  69                         ;;
  70                         *:layer7)
  71                                 add_insmod ipt_layer7
  72                                 append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
  73                         ;;
  74                         *:ports|*:srcports|*:dstports)
  75                                 value="$(echo "$value" | sed -e 's,-,:,g')"
  76                                 lproto=${lproto:-tcp}
  77                                 case "$proto" in
  78                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
  79                                         *) unset "$var"; return 0;;
  80                                 esac
  81                                 case "$option" in
  82                                         ports)
  83                                                 config_set "$section" srcports ""
  84                                                 config_set "$section" dstports ""
  85                                                 config_set "$section" portrange ""
  86                                                 append "$var" "--ports $value"
  87                                         ;;
  88                                         srcports)
  89                                                 config_set "$section" ports ""
  90                                                 config_set "$section" dstports ""
  91                                                 config_set "$section" portrange ""
  92                                                 append "$var" "--sports $value"
  93                                         ;;
  94                                         dstports)
  95                                                 config_set "$section" ports ""
  96                                                 config_set "$section" srcports ""
  97                                                 config_set "$section" portrange ""
  98                                                 append "$var" "--dports $value"
  99                                         ;;
 100                                 esac
 101                                 ports=1
 102                         ;;
 103                         *:portrange)
 104                                 config_set "$section" ports ""
 105                                 config_set "$section" srcports ""
 106                                 config_set "$section" dstports ""
 107                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 108                                 case "$proto" in
 109                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
 110                                         *) unset "$var"; return 0;;
 111                                 esac
 112                                 ports=1
 113                         ;;
 114                         *:connbytes)
 115                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 116                                 add_insmod ipt_connbytes
 117                                 append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
 118                         ;;
 119                         *:direction)
 120                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 121                                 if [ "$value" = "out" ]; then
 122                                         append "$var" "-o $device"
 123                                 elif [ "$value" = "in" ]; then
 124                                         append "$var" "-i $device"
 125                                 fi
 126                         ;;
 127                         1:pktsize)
 128                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 129                                 add_insmod ipt_length
 130                                 append "$var" "-m length --length $value"
 131                         ;;
 132                         1:limit)
 133                                 add_insmod ipt_limit
 134                                 append "$var" "-m limit --limit $value"
 135                         ;;
 136                         1:tcpflags)
 137                                 case "$proto" in
 138                                         tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
 139                                         *) unset $var; return 0;;
 140                                 esac
 141                         ;;
 142                         1:mark)
 143                                 config_get class "${value##!}" classnr
 144                                 [ -z "$class" ] && continue;
 145                                 case "$value" in
 146                                         !*) append "$var" "-m mark ! --mark $class";;
 147                                         *) append "$var" "-m mark --mark $class";;
 148                                 esac
 149                 esac
 150         done
 151         append "$var" "$suffix"
 152         case "$ports:$proto" in
 153                 1:)     parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
 154         esac
 155 }
 156
 157 config_cb() {
 158         option_cb() {
 159                 return 0
 160         }
 161
 162         # Section start
 163         case "$1" in
 164                 interface)
 165                         config_set "$2" "classgroup" "Default"
 166                         config_set "$2" "upload" "128"
 167                 ;;
 168                 classify|default|reclassify)
 169                         option_cb() {
 170                                 append options "$1"
 171                         }
 172                 ;;
 173         esac
 174
 175     # Section end
 176         config_get TYPE "$CONFIG_SECTION" TYPE
 177         case "$TYPE" in
 178                 interface)
 179                         config_get_bool enabled "$CONFIG_SECTION" enabled 1
 180                         [ 1 -eq "$enabled" ] || return 0
 181                         config_get classgroup "$CONFIG_SECTION" classgroup
 182                         config_set "$CONFIG_SECTION" imqdev "$C"
 183                         C=$(($C+1))
 184                         append INTERFACES "$CONFIG_SECTION"
 185                         config_set "$classgroup" enabled 1
 186                         config_get device "$CONFIG_SECTION" device
 187                         [ -z "$device" ] && {
 188                                 device="$(find_ifname ${CONFIG_SECTION})"
 189                                 config_set "$CONFIG_SECTION" device "${device:-eth0}"
 190                         }
 191                 ;;
 192                 classgroup) append CG "$CONFIG_SECTION";;
 193                 classify|default|reclassify)
 194                         case "$TYPE" in
 195                                 classify) var="ctrules";;
 196                                 *) var="rules";;
 197                         esac
 198                         config_get target "$CONFIG_SECTION" target
 199                         config_set "$CONFIG_SECTION" options "$options"
 200                         append "$var" "$CONFIG_SECTION"
 201                         unset options
 202                 ;;
 203         esac
 204 }
 205
 206
 207 enum_classes() {
 208         local c="0"
 209         config_get classes "$1" classes
 210         config_get default "$1" default
 211         for class in $classes; do
 212                 c="$(($c + 1))"
 213                 config_set "${class}" classnr $c
 214                 case "$class" in
 215                         $default) class_default=$c;;
 216                 esac
 217         done
 218         class_default="${class_default:-$c}"
 219 }
 220
 221 cls_var() {
 222         local varname="$1"
 223         local class="$2"
 224         local name="$3"
 225         local type="$4"
 226         local default="$5"
 227         local tmp tmp1 tmp2
 228         config_get tmp1 "$class" "$name"
 229         config_get tmp2 "${class}_${type}" "$name"
 230         tmp="${tmp2:-$tmp1}"
 231         tmp="${tmp:-$tmp2}"
 232         export ${varname}="${tmp:-$default}"
 233 }
 234
 235 tcrules() {
 236         dir=/usr/lib/qos
 237         [ -e $dir/tcrules.awk ] || dir=.
 238         echo "$cstr" | awk \
 239                 -v device="$dev" \
 240                 -v linespeed="$rate" \
 241                 -f $dir/tcrules.awk
 242 }
 243
 244 start_interface() {
 245         local iface="$1"
 246         local num_imq="$2"
 247         config_get device "$iface" device
 248         config_get_bool enabled "$iface" enabled 1
 249         [ -z "$device" -o 1 -ne "$enabled" ] && {
 250                 echo "Interface '$iface' not found or disabled." >&2
 251                 return 1
 252         }
 253         config_get upload "$iface" upload
 254         config_get halfduplex "$iface" halfduplex
 255         config_get download "$iface" download
 256         config_get classgroup "$iface" classgroup
 257         config_get_bool overhead "$iface" overhead 0
 258
 259         download="${download:-${halfduplex:+$upload}}"
 260         enum_classes "$classgroup"
 261         for dir in up${halfduplex} ${download:+down}; do
 262                 case "$dir" in
 263                         up)
 264                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
 265                                 dev="$device"
 266                                 rate="$upload"
 267                                 dl_mode=""
 268                                 prefix="cls"
 269                         ;;
 270                         down)
 271                                 add_insmod imq numdevs="$num_imq"
 272                                 config_get imqdev "$iface" imqdev
 273                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 274                                 dev="imq$imqdev"
 275                                 rate="$download"
 276                                 dl_mode=1
 277                                 prefix="d_cls"
 278                         ;;
 279                         *) continue;;
 280                 esac
 281                 cstr=
 282                 for class in $classes; do
 283                         cls_var pktsize "$class" packetsize $dir 1500
 284                         cls_var pktdelay "$class" packetdelay $dir 0
 285                         cls_var maxrate "$class" limitrate $dir 100
 286                         cls_var prio "$class" priority $dir 1
 287                         cls_var avgrate "$class" avgrate $dir 0
 288                         config_get classnr "$class" classnr
 289                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate" "$N"
 290                 done
 291                 append ${prefix}q "$(tcrules)" "$N"
 292                 export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
 293 tc qdisc del dev $dev root >&- 2>&-
 294 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 295 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 296         done
 297         add_insmod cls_fw
 298         add_insmod sch_hfsc
 299         add_insmod sch_sfq
 300         add_insmod sch_red
 301
 302         cat <<EOF
 303 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 304 $clsq
 305 }${imqdev:+$dev_down
 306 $d_clsq
 307 $d_clsl
 308 $d_clsf
 309 }
 310 EOF
 311         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 312 }
 313
 314 start_interfaces() {
 315         local C="$1"
 316         for iface in $INTERFACES; do
 317                 start_interface "$iface" "$C"
 318         done
 319 }
 320
 321 add_rules() {
 322         local var="$1"
 323         local rules="$2"
 324         local prefix="$3"
 325
 326         for rule in $rules; do
 327                 unset iptrule
 328                 config_get target "$rule" target
 329                 config_get target "$target" classnr
 330                 config_get options "$rule" options
 331                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
 332                 append "$var" "$iptrule" "$N"
 333         done
 334 }
 335
 336 start_cg() {
 337         local cg="$1"
 338         local iptrules
 339         local pktrules
 340         local sizerules
 341         local download
 342         enum_classes "$cg"
 343         add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
 344         config_get classes "$cg" classes
 345         for class in $classes; do
 346                 config_get mark "$class" classnr
 347                 config_get maxsize "$class" maxsize
 348                 [ -z "$maxsize" -o -z "$mark" ] || {
 349                         add_insmod ipt_length
 350                         append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
 351                 }
 352         done
 353         add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
 354         for iface in $INTERFACES; do
 355                 config_get classgroup "$iface" classgroup
 356                 config_get device "$iface" device
 357                 config_get imqdev "$iface" imqdev
 358                 config_get dl "$iface" download
 359                 config_get halfduplex "$iface" halfduplex
 360                 add_insmod ipt_IMQ
 361                 append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
 362                 append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
 363                 [ -z "$dl" ] || {
 364                         [ -z "$halfduplex" ] || {
 365                                 append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
 366                         }
 367                         append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
 368                         append down "iptables -t mangle -A POSTROUTING -o $device -j ${cg}" "$N"
 369                         append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
 370                 }
 371         done
 372         cat <<EOF
 373 $INSMOD
 374 iptables -t mangle -N ${cg} >&- 2>&-
 375 iptables -t mangle -N ${cg}_ct >&- 2>&-
 376 ${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
 377 iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
 378 iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
 379 $pktrules
 380 $up$N${down:+${down}$N}
 381 EOF
 382         unset INSMOD
 383 }
 384
 385 start_firewall() {
 386         add_insmod ipt_multiport
 387         add_insmod ipt_CONNMARK
 388         cat <<EOF
 389 iptables -t mangle -F
 390 iptables -t mangle -X
 391 EOF
 392         for group in $CG; do
 393                 start_cg $group
 394         done
 395 }
 396
 397 C="0"
 398 INTERFACES=""
 399 [ -e ./qos.conf ] && {
 400         . ./qos.conf
 401         config_cb
 402 } || config_load qos
 403
 404 C="0"
 405 for iface in $INTERFACES; do
 406         export C="$(($C + 1))"
 407 done
 408
 409 case "$1" in
 410         all)
 411                 start_interfaces "$C"
 412                 start_firewall
 413         ;;
 414         interface)
 415                 start_interface "$2" "$C"
 416         ;;
 417         interfaces)
 418                 start_interfaces
 419         ;;
 420         firewall)
 421                 start_firewall
 422         ;;
 423 esac