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 $value --connbytes-dir both --connbytes-mode bytes"
 118                         ;;
 119                         1:pktsize)
 120                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 121                                 add_insmod ipt_length
 122                                 append "$var" "-m length --length $value"
 123                         ;;
 124                         1:limit)
 125                                 add_insmod ipt_limit
 126                                 append "$var" "-m limit --limit $value"
 127                         ;;
 128                         1:tcpflags)
 129                                 case "$proto" in
 130                                         tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
 131                                         *) unset $var; return 0;;
 132                                 esac
 133                         ;;
 134                         1:mark)
 135                                 config_get class "${value##!}" classnr
 136                                 [ -z "$class" ] && continue;
 137                                 case "$value" in
 138                                         !*) append "$var" "-m mark ! --mark $class";;
 139                                         *) append "$var" "-m mark --mark $class";;
 140                                 esac
 141                 esac
 142         done
 143         append "$var" "$suffix"
 144         case "$ports:$proto" in
 145                 1:)     parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
 146         esac
 147 }
 148
 149 config_cb() {
 150         option_cb() {
 151                 return 0
 152         }
 153
 154         # Section start
 155         case "$1" in
 156                 interface)
 157                         config_set "$2" "classgroup" "Default"
 158                         config_set "$2" "upload" "128"
 159                 ;;
 160                 classify|default|reclassify)
 161                         option_cb() {
 162                                 append options "$1"
 163                         }
 164                 ;;
 165         esac
 166
 167     # Section end
 168         config_get TYPE "$CONFIG_SECTION" TYPE
 169         case "$TYPE" in
 170                 interface)
 171                         config_get_bool enabled "$CONFIG_SECTION" enabled 1
 172                         [ 1 -eq "$enabled" ] || return 0
 173                         config_get classgroup "$CONFIG_SECTION" classgroup
 174                         config_set "$CONFIG_SECTION" imqdev "$C"
 175                         C=$(($C+1))
 176                         append INTERFACES "$CONFIG_SECTION"
 177                         config_set "$classgroup" enabled 1
 178                         config_get device "$CONFIG_SECTION" device
 179                         [ -z "$device" ] && {
 180                                 device="$(find_ifname ${CONFIG_SECTION})"
 181                                 config_set "$CONFIG_SECTION" device "${device:-eth0}"
 182                         }
 183                 ;;
 184                 classgroup) append CG "$CONFIG_SECTION";;
 185                 classify|default|reclassify)
 186                         case "$TYPE" in
 187                                 classify) var="ctrules";;
 188                                 *) var="rules";;
 189                         esac
 190                         config_get target "$CONFIG_SECTION" target
 191                         config_set "$CONFIG_SECTION" options "$options"
 192                         append "$var" "$CONFIG_SECTION"
 193                         unset options
 194                 ;;
 195         esac
 196 }
 197
 198
 199 enum_classes() {
 200         local c="0"
 201         config_get classes "$1" classes
 202         config_get default "$1" default
 203         for class in $classes; do
 204                 c="$(($c + 1))"
 205                 config_set "${class}" classnr $c
 206                 case "$class" in
 207                         $default) class_default=$c;;
 208                 esac
 209         done
 210         class_default="${class_default:-$c}"
 211 }
 212
 213 cls_var() {
 214         local varname="$1"
 215         local class="$2"
 216         local name="$3"
 217         local type="$4"
 218         local default="$5"
 219         local tmp tmp1 tmp2
 220         config_get tmp1 "$class" "$name"
 221         config_get tmp2 "${class}_${type}" "$name"
 222         tmp="${tmp2:-$tmp1}"
 223         tmp="${tmp:-$tmp2}"
 224         export ${varname}="${tmp:-$default}"
 225 }
 226
 227 tcrules() {
 228         dir=/usr/lib/qos
 229         [ -e $dir/tcrules.awk ] || dir=.
 230         echo "$cstr" | awk \
 231                 -v device="$dev" \
 232                 -v linespeed="$rate" \
 233                 -f $dir/tcrules.awk
 234 }
 235
 236 start_interface() {
 237         local iface="$1"
 238         local num_imq="$2"
 239         config_get device "$iface" device
 240         config_get_bool enabled "$iface" enabled 1
 241         [ -z "$device" -o 1 -ne "$enabled" ] && {
 242                 echo "Interface '$iface' not found or disabled." >&2
 243                 return 1
 244         }
 245         config_get upload "$iface" upload
 246         config_get halfduplex "$iface" halfduplex
 247         config_get download "$iface" download
 248         config_get classgroup "$iface" classgroup
 249         config_get_bool overhead "$iface" overhead 0
 250
 251         download="${download:-${halfduplex:+$upload}}"
 252         enum_classes "$classgroup"
 253         for dir in up${halfduplex} ${download:+down}; do
 254                 case "$dir" in
 255                         up)
 256                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (32 * 128 / $upload)))
 257                                 dev="$device"
 258                                 rate="$upload"
 259                                 dl_mode=""
 260                                 prefix="cls"
 261                         ;;
 262                         down)
 263                                 add_insmod imq numdevs="$num_imq"
 264                                 config_get imqdev "$iface" imqdev
 265                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 266                                 dev="imq$imqdev"
 267                                 rate="$download"
 268                                 dl_mode=1
 269                                 prefix="d_cls"
 270                         ;;
 271                         *) continue;;
 272                 esac
 273                 cstr=
 274                 for class in $classes; do
 275                         cls_var pktsize "$class" packetsize $dir 1500
 276                         cls_var pktdelay "$class" packetdelay $dir 0
 277                         cls_var maxrate "$class" limitrate $dir 100
 278                         cls_var prio "$class" priority $dir 1
 279                         cls_var avgrate "$class" avgrate $dir 0
 280                         config_get classnr "$class" classnr
 281                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate" "$N"
 282                 done
 283                 append ${prefix}q "$(tcrules)" "$N"
 284                 export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
 285 tc qdisc del dev $dev root >&- 2>&-
 286 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 287 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 288         done
 289         add_insmod cls_fw
 290         add_insmod sch_hfsc
 291         add_insmod sch_sfq
 292         add_insmod sch_red
 293
 294         cat <<EOF
 295 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 296 $clsq
 297 }${imqdev:+$dev_down
 298 $d_clsq
 299 $d_clsl
 300 $d_clsf
 301 }
 302 EOF
 303         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 304 }
 305
 306 start_interfaces() {
 307         local C="$1"
 308         for iface in $INTERFACES; do
 309                 start_interface "$iface" "$C"
 310         done
 311 }
 312
 313 add_rules() {
 314         local var="$1"
 315         local rules="$2"
 316         local prefix="$3"
 317
 318         for rule in $rules; do
 319                 unset iptrule
 320                 config_get target "$rule" target
 321                 config_get target "$target" classnr
 322                 config_get options "$rule" options
 323                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target"
 324                 append "$var" "$iptrule" "$N"
 325         done
 326 }
 327
 328 start_cg() {
 329         local cg="$1"
 330         local iptrules
 331         local pktrules
 332         local sizerules
 333         local download
 334         enum_classes "$cg"
 335         add_rules iptrules "$ctrules" "iptables -t mangle -A ${cg}_ct"
 336         config_get classes "$cg" classes
 337         for class in $classes; do
 338                 config_get mark "$class" classnr
 339                 config_get maxsize "$class" maxsize
 340                 [ -z "$maxsize" -o -z "$mark" ] || {
 341                         add_insmod ipt_length
 342                         append pktrules "iptables -t mangle -A ${cg} -m mark --mark $mark -m length --length $maxsize: -j MARK --set-mark 0" "$N"
 343                 }
 344         done
 345         add_rules pktrules "$rules" "iptables -t mangle -A ${cg}"
 346         for iface in $INTERFACES; do
 347                 config_get classgroup "$iface" classgroup
 348                 config_get device "$iface" device
 349                 config_get imqdev "$iface" imqdev
 350                 config_get dl "$iface" download
 351                 config_get halfduplex "$iface" halfduplex
 352                 add_insmod ipt_IMQ
 353                 append up "iptables -t mangle -A OUTPUT -o $device -j ${cg}" "$N"
 354                 append up "iptables -t mangle -A FORWARD -o $device -j ${cg}" "$N"
 355                 [ -z "$dl" ] || {
 356                         [ -z "$halfduplex" ] || {
 357                                 append down "iptables -t mangle -A POSTROUTING -o $device -j IMQ --todev $imqdev" "$N"
 358                         }
 359                         append down "iptables -t mangle -A PREROUTING -i $device -j ${cg}" "$N"
 360                         append down "iptables -t mangle -A PREROUTING -i $device -j IMQ --todev $imqdev" "$N"
 361                 }
 362         done
 363         cat <<EOF
 364 $INSMOD
 365 iptables -t mangle -N ${cg} >&- 2>&-
 366 iptables -t mangle -N ${cg}_ct >&- 2>&-
 367 ${iptrules:+${iptrules}${N}iptables -t mangle -A ${cg}_ct -j CONNMARK --save-mark}
 368 iptables -t mangle -A ${cg} -j CONNMARK --restore-mark
 369 iptables -t mangle -A ${cg} -m mark --mark 0 -j ${cg}_ct
 370 $pktrules
 371 $up$N${down:+${down}$N}
 372 EOF
 373         unset INSMOD
 374 }
 375
 376 start_firewall() {
 377         add_insmod ipt_multiport
 378         add_insmod ipt_CONNMARK
 379         cat <<EOF
 380 iptables -t mangle -F
 381 iptables -t mangle -X
 382 EOF
 383         for group in $CG; do
 384                 start_cg $group
 385         done
 386 }
 387
 388 C="0"
 389 INTERFACES=""
 390 [ -e ./qos.conf ] && {
 391         . ./qos.conf
 392         config_cb
 393 } || config_load qos
 394
 395 C="0"
 396 for iface in $INTERFACES; do
 397         export C="$(($C + 1))"
 398 done
 399
 400 case "$1" in
 401         all)
 402                 start_interfaces "$C"
 403                 start_firewall
 404         ;;
 405         interface)
 406                 start_interface "$2" "$C"
 407         ;;
 408         interfaces)
 409                 start_interfaces
 410         ;;
 411         firewall)
 412                 start_firewall
 413         ;;
 414 esac