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