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 $value"
  61                         ;;
  62                         *:layer7)
  63                                 add_insmod ipt_layer7
  64                                 add_insmod xt_layer7
  65                                 append "$var" "-m layer7 --l7proto $value${pkt:+ --l7pkt}"
  66                         ;;
  67                         *:ports|*:srcports|*:dstports)
  68                                 value="$(echo "$value" | sed -e 's,-,:,g')"
  69                                 lproto=${lproto:-tcp}
  70                                 case "$proto" in
  71                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
  72                                         *) unset "$var"; return 0;;
  73                                 esac
  74                                 case "$option" in
  75                                         ports)
  76                                                 config_set "$section" srcports ""
  77                                                 config_set "$section" dstports ""
  78                                                 config_set "$section" portrange ""
  79                                                 append "$var" "--ports $value"
  80                                         ;;
  81                                         srcports)
  82                                                 config_set "$section" ports ""
  83                                                 config_set "$section" dstports ""
  84                                                 config_set "$section" portrange ""
  85                                                 append "$var" "--sports $value"
  86                                         ;;
  87                                         dstports)
  88                                                 config_set "$section" ports ""
  89                                                 config_set "$section" srcports ""
  90                                                 config_set "$section" portrange ""
  91                                                 append "$var" "--dports $value"
  92                                         ;;
  93                                 esac
  94                                 ports=1
  95                         ;;
  96                         *:portrange)
  97                                 config_set "$section" ports ""
  98                                 config_set "$section" srcports ""
  99                                 config_set "$section" dstports ""
 100                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 101                                 case "$proto" in
 102                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
 103                                         *) unset "$var"; return 0;;
 104                                 esac
 105                                 ports=1
 106                         ;;
 107                         *:connbytes)
 108                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 109                                 add_insmod ipt_connbytes
 110                                 append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
 111                         ;;
 112                         *:tos)
 113                                 add_insmod ipt_tos
 114                                 case "$value" in
 115                                         !*) append "$var" "-m tos ! --tos $value";;
 116                                         *) append "$var" "-m tos --tos $value"
 117                                 esac
 118                         ;;
 119                         *:dscp)
 120                                 add_insmod ipt_dscp
 121                                 dscp_option="--dscp"
 122                                 [ -z "${value%%[EBCA]*}" ] && dscp_option="--dscp-class"
 123                                 case "$value" in
 124                                         !*) append "$var" "-m dscp ! $dscp_option $value";;
 125                                         *) append "$var" "-m dscp $dscp_option $value"
 126                                 esac
 127                         ;;
 128                         *:direction)
 129                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 130                                 if [ "$value" = "out" ]; then
 131                                         append "$var" "-o $device"
 132                                 elif [ "$value" = "in" ]; then
 133                                         append "$var" "-i $device"
 134                                 fi
 135                         ;;
 136                         1:pktsize)
 137                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 138                                 add_insmod ipt_length
 139                                 append "$var" "-m length --length $value"
 140                         ;;
 141                         1:limit)
 142                                 add_insmod ipt_limit
 143                                 append "$var" "-m limit --limit $value"
 144                         ;;
 145                         1:tcpflags)
 146                                 case "$proto" in
 147                                         tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
 148                                         *) unset $var; return 0;;
 149                                 esac
 150                         ;;
 151                         1:mark)
 152                                 config_get class "${value##!}" classnr
 153                                 [ -z "$class" ] && continue;
 154                                 case "$value" in
 155                                         !*) append "$var" "-m mark ! --mark $class";;
 156                                         *) append "$var" "-m mark --mark $class";;
 157                                 esac
 158                         ;;
 159                         1:TOS)
 160                                 add_insmod ipt_TOS
 161                                 config_get TOS "$rule" 'TOS'
 162                                 suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
 163                         ;;
 164                         1:DSCP)
 165                                 add_insmod ipt_DSCP
 166                                 config_get DSCP "$rule" 'DSCP'
 167                                 [ -z "${DSCP%%[EBCA]*}" ] && set_value="--set-dscp-class $DSCP" \
 168                                 || set_value="--set-dscp $DSCP"
 169                                 suffix="-j DSCP $set_value"
 170                         ;;
 171                 esac
 172         done
 173         append "$var" "$suffix"
 174         case "$ports:$proto" in
 175                 1:)     parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
 176         esac
 177 }
 178
 179 config_cb() {
 180         option_cb() {
 181                 return 0
 182         }
 183
 184         # Section start
 185         case "$1" in
 186                 interface)
 187                         config_set "$2" "classgroup" "Default"
 188                         config_set "$2" "upload" "128"
 189                 ;;
 190                 classify|default|reclassify)
 191                         option_cb() {
 192                                 append options "$1"
 193                         }
 194                 ;;
 195         esac
 196
 197     # Section end
 198         config_get TYPE "$CONFIG_SECTION" TYPE
 199         case "$TYPE" in
 200                 interface)
 201                         config_get_bool enabled "$CONFIG_SECTION" enabled 1
 202                         [ 1 -eq "$enabled" ] || return 0
 203                         config_get classgroup "$CONFIG_SECTION" classgroup
 204                         config_set "$CONFIG_SECTION" imqdev "$C"
 205                         C=$(($C+1))
 206                         append INTERFACES "$CONFIG_SECTION"
 207                         config_set "$classgroup" enabled 1
 208                         config_get device "$CONFIG_SECTION" device
 209                         [ -z "$device" ] && {
 210                                 device="$(find_ifname ${CONFIG_SECTION})"
 211                                 config_set "$CONFIG_SECTION" device "${device:-eth0}"
 212                         }
 213                 ;;
 214                 classgroup) append CG "$CONFIG_SECTION";;
 215                 classify|default|reclassify)
 216                         case "$TYPE" in
 217                                 classify) var="ctrules";;
 218                                 *) var="rules";;
 219                         esac
 220                         config_get target "$CONFIG_SECTION" target
 221                         config_set "$CONFIG_SECTION" options "$options"
 222                         append "$var" "$CONFIG_SECTION"
 223                         unset options
 224                 ;;
 225         esac
 226 }
 227
 228
 229 enum_classes() {
 230         local c="0"
 231         config_get classes "$1" classes
 232         config_get default "$1" default
 233         for class in $classes; do
 234                 c="$(($c + 1))"
 235                 config_set "${class}" classnr $c
 236                 case "$class" in
 237                         $default) class_default=$c;;
 238                 esac
 239         done
 240         class_default="${class_default:-$c}"
 241 }
 242
 243 cls_var() {
 244         local varname="$1"
 245         local class="$2"
 246         local name="$3"
 247         local type="$4"
 248         local default="$5"
 249         local tmp tmp1 tmp2
 250         config_get tmp1 "$class" "$name"
 251         config_get tmp2 "${class}_${type}" "$name"
 252         tmp="${tmp2:-$tmp1}"
 253         tmp="${tmp:-$tmp2}"
 254         export ${varname}="${tmp:-$default}"
 255 }
 256
 257 tcrules() {
 258         dir=/usr/lib/qos
 259         [ -e $dir/tcrules.awk ] || dir=.
 260         echo "$cstr" | awk \
 261                 -v device="$dev" \
 262                 -v linespeed="$rate" \
 263                 -f $dir/tcrules.awk
 264 }
 265
 266 start_interface() {
 267         local iface="$1"
 268         local num_imq="$2"
 269         config_get device "$iface" device
 270         config_get_bool enabled "$iface" enabled 1
 271         [ -z "$device" -o 1 -ne "$enabled" ] && {
 272                 return 1
 273         }
 274         config_get upload "$iface" upload
 275         config_get halfduplex "$iface" halfduplex
 276         config_get download "$iface" download
 277         config_get classgroup "$iface" classgroup
 278         config_get_bool overhead "$iface" overhead 0
 279
 280         download="${download:-${halfduplex:+$upload}}"
 281         enum_classes "$classgroup"
 282         for dir in up${halfduplex} ${download:+down}; do
 283                 case "$dir" in
 284                         up)
 285                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
 286                                 dev="$device"
 287                                 rate="$upload"
 288                                 dl_mode=""
 289                                 prefix="cls"
 290                         ;;
 291                         down)
 292                                 add_insmod imq numdevs="$num_imq"
 293                                 config_get imqdev "$iface" imqdev
 294                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 295                                 dev="imq$imqdev"
 296                                 rate="$download"
 297                                 dl_mode=1
 298                                 prefix="d_cls"
 299                         ;;
 300                         *) continue;;
 301                 esac
 302                 cstr=
 303                 for class in $classes; do
 304                         cls_var pktsize "$class" packetsize $dir 1500
 305                         cls_var pktdelay "$class" packetdelay $dir 0
 306                         cls_var maxrate "$class" limitrate $dir 100
 307                         cls_var prio "$class" priority $dir 1
 308                         cls_var avgrate "$class" avgrate $dir 0
 309                         config_get classnr "$class" classnr
 310                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate" "$N"
 311                 done
 312                 append ${prefix}q "$(tcrules)" "$N"
 313                 export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
 314 tc qdisc del dev $dev root >&- 2>&-
 315 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 316 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 317         done
 318         add_insmod cls_fw
 319         add_insmod sch_hfsc
 320         add_insmod sch_sfq
 321         add_insmod sch_red
 322
 323         cat <<EOF
 324 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 325 $clsq
 326 }${imqdev:+$dev_down
 327 $d_clsq
 328 $d_clsl
 329 $d_clsf
 330 }
 331 EOF
 332         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 333 }
 334
 335 start_interfaces() {
 336         local C="$1"
 337         for iface in $INTERFACES; do
 338                 start_interface "$iface" "$C"
 339         done
 340 }
 341
 342 add_rules() {
 343         local var="$1"
 344         local rules="$2"
 345         local prefix="$3"
 346
 347         for rule in $rules; do
 348                 unset iptrule
 349                 config_get target "$rule" target
 350                 config_get target "$target" classnr
 351                 config_get options "$rule" options
 352
 353                 ## If we want to override the TOS field, let's clear the DSCP field first.
 354                 [ ! -z "$(echo $options | grep 'TOS')" ] && {
 355                         s_options=${options%%TOS}
 356                         add_insmod ipt_DSCP
 357                         parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
 358                         append "$var" "$iptrule" "$N"
 359                         unset iptrule
 360                 }
 361
 362                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
 363                 append "$var" "$iptrule" "$N"
 364         done
 365 }
 366
 367 start_cg() {
 368         local cg="$1"
 369         local iptrules
 370         local pktrules
 371         local sizerules
 372         local download
 373         enum_classes "$cg"
 374         add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
 375         config_get classes "$cg" classes
 376         for class in $classes; do
 377                 config_get mark "$class" classnr
 378                 config_get maxsize "$class" maxsize
 379                 [ -z "$maxsize" -o -z "$mark" ] || {
 380                         add_insmod ipt_length
 381                         append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
 382                 }
 383         done
 384         add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
 385         for iface in $INTERFACES; do
 386                 config_get classgroup "$iface" classgroup
 387                 config_get device "$iface" device
 388                 config_get imqdev "$iface" imqdev
 389                 config_get dl "$iface" download
 390                 config_get halfduplex "$iface" halfduplex
 391                 add_insmod ipt_IMQ
 392                 append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
 393                 append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
 394                 [ -z "$dl" ] || {
 395                         [ -z "$halfduplex" ] || {
 396                                 append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
 397                         }
 398                         append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
 399                         append down "iptables -t mangle -A POSTROUTING -o $device -j ${cg}" "$N"
 400                         append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
 401                 }
 402         done
 403         cat <<EOF
 404 $INSMOD
 405 iptables -t mangle -N ${cg} >&- 2>&-
 406 iptables -t mangle -N ${cg}_ct >&- 2>&-
 407 ${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
 408 iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
 409 iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
 410 $pktrules
 411 $up$N${down:+${down}$N}
 412 EOF
 413         unset INSMOD
 414 }
 415
 416 start_firewall() {
 417         add_insmod ipt_multiport
 418         add_insmod ipt_CONNMARK
 419         cat <<EOF
 420 iptables -t mangle -F
 421 iptables -t mangle -X
 422 EOF
 423         for group in $CG; do
 424                 start_cg $group
 425         done
 426 }
 427
 428 C="0"
 429 INTERFACES=""
 430 [ -e ./qos.conf ] && {
 431         . ./qos.conf
 432         config_cb
 433 } || config_load qos
 434
 435 C="0"
 436 for iface in $INTERFACES; do
 437         export C="$(($C + 1))"
 438 done
 439
 440 case "$1" in
 441         all)
 442                 start_interfaces "$C"
 443                 start_firewall
 444         ;;
 445         interface)
 446                 start_interface "$2" "$C"
 447         ;;
 448         interfaces)
 449                 start_interfaces
 450         ;;
 451         firewall)
 452                 start_firewall
 453         ;;
 454 esac