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