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_load /var/state/network
  21                 config_get "$1" ifname
  22         )}
  23 } || {
  24         find_ifname() {
  25                 echo "Interface not found."
  26                 exit 1
  27         }
  28 }
  29
  30 parse_matching_rule() {
  31         local var="$1"
  32         local section="$2"
  33         local options="$3"
  34         local prefix="$4"
  35         local suffix="$5"
  36         local proto="$6"
  37         local mport=""
  38         local ports=""
  39
  40         append "$var" "$prefix" "$N"
  41         for option in $options; do
  42                 case "$option" in
  43                         proto) config_get value "$section" proto; proto="${proto:-$value}";;
  44                 esac
  45         done
  46         config_get type "$section" TYPE
  47         case "$type" in
  48                 classify) unset pkt; append "$var" "-m mark --mark 0";;
  49                 default) pkt=1; append "$var" "-m mark --mark 0";;
  50                 reclassify) pkt=1;;
  51         esac
  52         append "$var" "${proto:+-p $proto}"
  53         for option in $options; do
  54                 config_get value "$section" "$option"
  55
  56                 case "$pkt:$option" in
  57                         *:srchost)
  58                                 append "$var" "-s $value"
  59                         ;;
  60                         *:dsthost)
  61                                 append "$var" "-d $value"
  62                         ;;
  63                         *:ipp2p)
  64                                 add_insmod ipt_ipp2p
  65                                 append "$var" "-m ipp2p"
  66                                 case "$value" in
  67                                         all) append "$var" "--edk --dc --kazaa --gnu --bit";;
  68                                         *) append "$var" "--$value";;
  69                                 esac
  70                         ;;
  71                         *:layer7)
  72                                 add_insmod ipt_layer7
  73                                 append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
  74                         ;;
  75                         *:ports|*:srcports|*:dstports)
  76                                 value="$(echo "$value" | sed -e 's,-,:,g')"
  77                                 lproto=${lproto:-tcp}
  78                                 case "$proto" in
  79                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
  80                                         *) unset "$var"; return 0;;
  81                                 esac
  82                                 case "$option" in
  83                                         ports)
  84                                                 config_set "$section" srcports ""
  85                                                 config_set "$section" dstports ""
  86                                                 config_set "$section" portrange ""
  87                                                 append "$var" "--ports $value"
  88                                         ;;
  89                                         srcports)
  90                                                 config_set "$section" ports ""
  91                                                 config_set "$section" dstports ""
  92                                                 config_set "$section" portrange ""
  93                                                 append "$var" "--sports $value"
  94                                         ;;
  95                                         dstports)
  96                                                 config_set "$section" ports ""
  97                                                 config_set "$section" srcports ""
  98                                                 config_set "$section" portrange ""
  99                                                 append "$var" "--dports $value"
 100                                         ;;
 101                                 esac
 102                                 ports=1
 103                         ;;
 104                         *:portrange)
 105                                 config_set "$section" ports ""
 106                                 config_set "$section" srcports ""
 107                                 config_set "$section" dstports ""
 108                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 109                                 case "$proto" in
 110                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
 111                                         *) unset "$var"; return 0;;
 112                                 esac
 113                                 ports=1
 114                         ;;
 115                         *:connbytes)
 116                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 117                                 add_insmod ipt_connbytes
 118                                 append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
 119                         ;;
 120                         *:tos)
 121                                 add_insmod ipt_tos
 122                                 case "$value" in
 123                                         !*) append "$var" "-m tos ! --tos $value";;
 124                                         *) append "$var" "-m tos --tos $value"
 125                                 esac
 126                         ;;
 127                         *:dscp)
 128                                 add_insmod ipt_dscp
 129                                 dscp_option="--dscp"
 130                                 [ -z "${value%%[EBCA]*}" ] && dscp_option="--dscp-class"
 131                                 case "$value" in
 132                                         !*) append "$var" "-m dscp ! $dscp_option $value";;
 133                                         *) append "$var" "-m dscp $dscp_option $value"
 134                                 esac
 135                         ;;
 136                         *:direction)
 137                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 138                                 if [ "$value" = "out" ]; then
 139                                         append "$var" "-o $device"
 140                                 elif [ "$value" = "in" ]; then
 141                                         append "$var" "-i $device"
 142                                 fi
 143                         ;;
 144                         1:pktsize)
 145                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 146                                 add_insmod ipt_length
 147                                 append "$var" "-m length --length $value"
 148                         ;;
 149                         1:limit)
 150                                 add_insmod ipt_limit
 151                                 append "$var" "-m limit --limit $value"
 152                         ;;
 153                         1:tcpflags)
 154                                 case "$proto" in
 155                                         tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
 156                                         *) unset $var; return 0;;
 157                                 esac
 158                         ;;
 159                         1:mark)
 160                                 config_get class "${value##!}" classnr
 161                                 [ -z "$class" ] && continue;
 162                                 case "$value" in
 163                                         !*) append "$var" "-m mark ! --mark $class";;
 164                                         *) append "$var" "-m mark --mark $class";;
 165                                 esac
 166                         ;;
 167                         1:TOS)
 168                                 add_insmod ipt_TOS
 169                                 config_get TOS "$rule" 'TOS'
 170                                 suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
 171                         ;;
 172                         1:DSCP)
 173                                 add_insmod ipt_DSCP
 174                                 config_get DSCP "$rule" 'DSCP'
 175                                 [ -z "${DSCP%%[EBCA]*}" ] && set_value="--set-dscp-class $DSCP" \
 176                                 || set_value="--set-dscp $DSCP"
 177                                 suffix="-j DSCP $set_value"
 178                         ;;
 179                 esac
 180         done
 181         append "$var" "$suffix"
 182         case "$ports:$proto" in
 183                 1:)     parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
 184         esac
 185 }
 186
 187 config_cb() {
 188         option_cb() {
 189                 return 0
 190         }
 191
 192         # Section start
 193         case "$1" in
 194                 interface)
 195                         config_set "$2" "classgroup" "Default"
 196                         config_set "$2" "upload" "128"
 197                 ;;
 198                 classify|default|reclassify)
 199                         option_cb() {
 200                                 append options "$1"
 201                         }
 202                 ;;
 203         esac
 204
 205     # Section end
 206         config_get TYPE "$CONFIG_SECTION" TYPE
 207         case "$TYPE" in
 208                 interface)
 209                         config_get_bool enabled "$CONFIG_SECTION" enabled 1
 210                         [ 1 -eq "$enabled" ] || return 0
 211                         config_get classgroup "$CONFIG_SECTION" classgroup
 212                         config_set "$CONFIG_SECTION" imqdev "$C"
 213                         C=$(($C+1))
 214                         append INTERFACES "$CONFIG_SECTION"
 215                         config_set "$classgroup" enabled 1
 216                         config_get device "$CONFIG_SECTION" device
 217                         [ -z "$device" ] && {
 218                                 device="$(find_ifname ${CONFIG_SECTION})"
 219                                 config_set "$CONFIG_SECTION" device "${device:-eth0}"
 220                         }
 221                 ;;
 222                 classgroup) append CG "$CONFIG_SECTION";;
 223                 classify|default|reclassify)
 224                         case "$TYPE" in
 225                                 classify) var="ctrules";;
 226                                 *) var="rules";;
 227                         esac
 228                         config_get target "$CONFIG_SECTION" target
 229                         config_set "$CONFIG_SECTION" options "$options"
 230                         append "$var" "$CONFIG_SECTION"
 231                         unset options
 232                 ;;
 233         esac
 234 }
 235
 236
 237 enum_classes() {
 238         local c="0"
 239         config_get classes "$1" classes
 240         config_get default "$1" default
 241         for class in $classes; do
 242                 c="$(($c + 1))"
 243                 config_set "${class}" classnr $c
 244                 case "$class" in
 245                         $default) class_default=$c;;
 246                 esac
 247         done
 248         class_default="${class_default:-$c}"
 249 }
 250
 251 cls_var() {
 252         local varname="$1"
 253         local class="$2"
 254         local name="$3"
 255         local type="$4"
 256         local default="$5"
 257         local tmp tmp1 tmp2
 258         config_get tmp1 "$class" "$name"
 259         config_get tmp2 "${class}_${type}" "$name"
 260         tmp="${tmp2:-$tmp1}"
 261         tmp="${tmp:-$tmp2}"
 262         export ${varname}="${tmp:-$default}"
 263 }
 264
 265 tcrules() {
 266         dir=/usr/lib/qos
 267         [ -e $dir/tcrules.awk ] || dir=.
 268         echo "$cstr" | awk \
 269                 -v device="$dev" \
 270                 -v linespeed="$rate" \
 271                 -f $dir/tcrules.awk
 272 }
 273
 274 start_interface() {
 275         local iface="$1"
 276         local num_imq="$2"
 277         config_get device "$iface" device
 278         config_get_bool enabled "$iface" enabled 1
 279         [ -z "$device" -o 1 -ne "$enabled" ] && {
 280                 return 1
 281         }
 282         config_get upload "$iface" upload
 283         config_get halfduplex "$iface" halfduplex
 284         config_get download "$iface" download
 285         config_get classgroup "$iface" classgroup
 286         config_get_bool overhead "$iface" overhead 0
 287
 288         download="${download:-${halfduplex:+$upload}}"
 289         enum_classes "$classgroup"
 290         for dir in up${halfduplex} ${download:+down}; do
 291                 case "$dir" in
 292                         up)
 293                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
 294                                 dev="$device"
 295                                 rate="$upload"
 296                                 dl_mode=""
 297                                 prefix="cls"
 298                         ;;
 299                         down)
 300                                 add_insmod imq numdevs="$num_imq"
 301                                 config_get imqdev "$iface" imqdev
 302                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 303                                 dev="imq$imqdev"
 304                                 rate="$download"
 305                                 dl_mode=1
 306                                 prefix="d_cls"
 307                         ;;
 308                         *) continue;;
 309                 esac
 310                 cstr=
 311                 for class in $classes; do
 312                         cls_var pktsize "$class" packetsize $dir 1500
 313                         cls_var pktdelay "$class" packetdelay $dir 0
 314                         cls_var maxrate "$class" limitrate $dir 100
 315                         cls_var prio "$class" priority $dir 1
 316                         cls_var avgrate "$class" avgrate $dir 0
 317                         config_get classnr "$class" classnr
 318                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate" "$N"
 319                 done
 320                 append ${prefix}q "$(tcrules)" "$N"
 321                 export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
 322 tc qdisc del dev $dev root >&- 2>&-
 323 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 324 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 325         done
 326         add_insmod cls_fw
 327         add_insmod sch_hfsc
 328         add_insmod sch_sfq
 329         add_insmod sch_red
 330
 331         cat <<EOF
 332 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 333 $clsq
 334 }${imqdev:+$dev_down
 335 $d_clsq
 336 $d_clsl
 337 $d_clsf
 338 }
 339 EOF
 340         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 341 }
 342
 343 start_interfaces() {
 344         local C="$1"
 345         for iface in $INTERFACES; do
 346                 start_interface "$iface" "$C"
 347         done
 348 }
 349
 350 add_rules() {
 351         local var="$1"
 352         local rules="$2"
 353         local prefix="$3"
 354
 355         for rule in $rules; do
 356                 unset iptrule
 357                 config_get target "$rule" target
 358                 config_get target "$target" classnr
 359                 config_get options "$rule" options
 360
 361                 ## If we want to override the TOS field, let's clear the DSCP field first.
 362                 [ ! -z "$(echo $options | grep 'TOS')" ] && {
 363                         s_options=${options%%TOS}
 364                         add_insmod ipt_DSCP
 365                         parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
 366                         append "$var" "$iptrule" "$N"
 367                         unset iptrule
 368                 }
 369
 370                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
 371                 append "$var" "$iptrule" "$N"
 372         done
 373 }
 374
 375 start_cg() {
 376         local cg="$1"
 377         local iptrules
 378         local pktrules
 379         local sizerules
 380         local download
 381         enum_classes "$cg"
 382         add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
 383         config_get classes "$cg" classes
 384         for class in $classes; do
 385                 config_get mark "$class" classnr
 386                 config_get maxsize "$class" maxsize
 387                 [ -z "$maxsize" -o -z "$mark" ] || {
 388                         add_insmod ipt_length
 389                         append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
 390                 }
 391         done
 392         add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
 393         for iface in $INTERFACES; do
 394                 config_get classgroup "$iface" classgroup
 395                 config_get device "$iface" device
 396                 config_get imqdev "$iface" imqdev
 397                 config_get dl "$iface" download
 398                 config_get halfduplex "$iface" halfduplex
 399                 add_insmod ipt_IMQ
 400                 append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
 401                 append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
 402                 [ -z "$dl" ] || {
 403                         [ -z "$halfduplex" ] || {
 404                                 append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
 405                         }
 406                         append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
 407                         append down "iptables -t mangle -A POSTROUTING -o $device -j ${cg}" "$N"
 408                         append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
 409                 }
 410         done
 411         cat <<EOF
 412 $INSMOD
 413 iptables -t mangle -N ${cg} >&- 2>&-
 414 iptables -t mangle -N ${cg}_ct >&- 2>&-
 415 ${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
 416 iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
 417 iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
 418 $pktrules
 419 $up$N${down:+${down}$N}
 420 EOF
 421         unset INSMOD
 422 }
 423
 424 start_firewall() {
 425         add_insmod ipt_multiport
 426         add_insmod ipt_CONNMARK
 427         cat <<EOF
 428 iptables -t mangle -F
 429 iptables -t mangle -X
 430 EOF
 431         for group in $CG; do
 432                 start_cg $group
 433         done
 434 }
 435
 436 C="0"
 437 INTERFACES=""
 438 [ -e ./qos.conf ] && {
 439         . ./qos.conf
 440         config_cb
 441 } || config_load qos
 442
 443 C="0"
 444 for iface in $INTERFACES; do
 445         export C="$(($C + 1))"
 446 done
 447
 448 case "$1" in
 449         all)
 450                 start_interfaces "$C"
 451                 start_firewall
 452         ;;
 453         interface)
 454                 start_interface "$2" "$C"
 455         ;;
 456         interfaces)
 457                 start_interfaces
 458         ;;
 459         firewall)
 460                 start_firewall
 461         ;;
 462 esac