package/network/config/qos-scripts/files/usr/lib/qos/generate.sh

   1 #!/bin/sh
   2 [ -e /lib/functions.sh ] && . /lib/functions.sh || . ./functions.sh
   3 [ -x /sbin/modprobe ] && {
   4         insmod="modprobe"
   5         rmmod="$insmod -r"
   6 } || {
   7         insmod="insmod"
   8         rmmod="rmmod"
   9 }
  10
  11 add_insmod() {
  12         eval "export isset=\${insmod_$1}"
  13         case "$isset" in
  14                 1) ;;
  15                 *) {
  16                         [ "$2" ] && append INSMOD "$rmmod $1 >&- 2>&-" "$N"
  17                         append INSMOD "$insmod $* >&- 2>&-" "$N"; export insmod_$1=1
  18                 };;
  19         esac
  20 }
  21
  22 [ -e /etc/config/network ] && {
  23         # only try to parse network config on openwrt
  24
  25         find_ifname() {(
  26                 reset_cb
  27                 include /lib/network
  28                 scan_interfaces
  29                 config_get "$1" ifname
  30         )}
  31 } || {
  32         find_ifname() {
  33                 echo "Interface not found."
  34                 exit 1
  35         }
  36 }
  37
  38 parse_matching_rule() {
  39         local var="$1"
  40         local section="$2"
  41         local options="$3"
  42         local prefix="$4"
  43         local suffix="$5"
  44         local proto="$6"
  45         local mport=""
  46         local ports=""
  47
  48         append "$var" "$prefix" "$N"
  49         for option in $options; do
  50                 case "$option" in
  51                         proto) config_get value "$section" proto; proto="${proto:-$value}";;
  52                 esac
  53         done
  54         config_get type "$section" TYPE
  55         case "$type" in
  56                 classify) unset pkt; append "$var" "-m mark --mark 0/0x0f";;
  57                 default) pkt=1; append "$var" "-m mark --mark 0/0xf0";;
  58                 reclassify) pkt=1;;
  59         esac
  60         append "$var" "${proto:+-p $proto}"
  61         for option in $options; do
  62                 config_get value "$section" "$option"
  63
  64                 case "$pkt:$option" in
  65                         *:srchost)
  66                                 append "$var" "-s $value"
  67                         ;;
  68                         *:dsthost)
  69                                 append "$var" "-d $value"
  70                         ;;
  71                         *:ports|*:srcports|*:dstports)
  72                                 value="$(echo "$value" | sed -e 's,-,:,g')"
  73                                 lproto=${lproto:-tcp}
  74                                 case "$proto" in
  75                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} -m multiport";;
  76                                         *) unset "$var"; return 0;;
  77                                 esac
  78                                 case "$option" in
  79                                         ports)
  80                                                 config_set "$section" srcports ""
  81                                                 config_set "$section" dstports ""
  82                                                 config_set "$section" portrange ""
  83                                                 append "$var" "--ports $value"
  84                                         ;;
  85                                         srcports)
  86                                                 config_set "$section" ports ""
  87                                                 config_set "$section" dstports ""
  88                                                 config_set "$section" portrange ""
  89                                                 append "$var" "--sports $value"
  90                                         ;;
  91                                         dstports)
  92                                                 config_set "$section" ports ""
  93                                                 config_set "$section" srcports ""
  94                                                 config_set "$section" portrange ""
  95                                                 append "$var" "--dports $value"
  96                                         ;;
  97                                 esac
  98                                 ports=1
  99                         ;;
 100                         *:portrange)
 101                                 config_set "$section" ports ""
 102                                 config_set "$section" srcports ""
 103                                 config_set "$section" dstports ""
 104                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 105                                 case "$proto" in
 106                                         ""|tcp|udp) append "$var" "-m ${proto:-tcp -p tcp} --sport $value --dport $value";;
 107                                         *) unset "$var"; return 0;;
 108                                 esac
 109                                 ports=1
 110                         ;;
 111                         *:connbytes)
 112                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 113                                 add_insmod xt_connbytes
 114                                 append "$var" "-m connbytes --connbytes $value --connbytes-dir both --connbytes-mode bytes"
 115                         ;;
 116                         *:comment)
 117                                 add_insmod xt_comment
 118                                 append "$var" "-m comment --comment '$value'"
 119                         ;;
 120                         *:tos)
 121                                 add_insmod xt_dscp
 122                                 case "$value" in
 123                                         !*) append "$var" "-m tos ! --tos $value";;
 124                                         *) append "$var" "-m tos --tos $value"
 125                                 esac
 126                         ;;
 127                         *:dscp)
 128                                 add_insmod xt_dscp
 129                                 dscp_option="--dscp"
 130                                 [ -z "${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 "$value" | sed -e 's,-,:,g')"
 146                                 add_insmod xt_length
 147                                 append "$var" "-m length --length $value"
 148                         ;;
 149                         1:limit)
 150                                 add_insmod xt_limit
 151                                 append "$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 $class/0x0f";;
 164                                         *) append "$var" "-m mark --mark $class/0x0f";;
 165                                 esac
 166                         ;;
 167                         1:TOS)
 168                                 add_insmod xt_DSCP
 169                                 config_get TOS "$rule" 'TOS'
 170                                 suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
 171                         ;;
 172                         1:DSCP)
 173                                 add_insmod xt_DSCP
 174                                 config_get DSCP "$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 "$CONFIG_SECTION" ifbdev "$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                 -v direction="$dir" \
 272                 -f $_dir/tcrules.awk
 273 }
 274
 275 start_interface() {
 276         local iface="$1"
 277         local num_ifb="$2"
 278         config_get device "$iface" device
 279         config_get_bool enabled "$iface" enabled 1
 280         [ -z "$device" -o 1 -ne "$enabled" ] && {
 281                 return 1
 282         }
 283         config_get upload "$iface" upload
 284         config_get_bool halfduplex "$iface" halfduplex
 285         config_get download "$iface" download
 286         config_get classgroup "$iface" classgroup
 287         config_get_bool overhead "$iface" overhead 0
 288
 289         download="${download:-${halfduplex:+$upload}}"
 290         enum_classes "$classgroup"
 291         for dir in ${halfduplex:-up} ${download:+down}; do
 292                 case "$dir" in
 293                         up)
 294                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
 295                                 dev="$device"
 296                                 rate="$upload"
 297                                 dl_mode=""
 298                                 prefix="cls"
 299                         ;;
 300                         down)
 301                                 [ "$(ls -d /proc/sys/net/ipv4/conf/ifb* 2>&- | wc -l)" -ne "$num_ifb" ] && add_insmod ifb numifbs="$num_ifb"
 302                                 config_get ifbdev "$iface" ifbdev
 303                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 304                                 dev="ifb$ifbdev"
 305                                 rate="$download"
 306                                 dl_mode=1
 307                                 prefix="d_cls"
 308                         ;;
 309                         *) continue;;
 310                 esac
 311                 cstr=
 312                 for class in $classes; do
 313                         cls_var pktsize "$class" packetsize $dir 1500
 314                         cls_var pktdelay "$class" packetdelay $dir 0
 315                         cls_var maxrate "$class" limitrate $dir 100
 316                         cls_var prio "$class" priority $dir 1
 317                         cls_var avgrate "$class" avgrate $dir 0
 318                         cls_var qdisc "$class" qdisc $dir ""
 319                         cls_var filter "$class" filter $dir ""
 320                         config_get classnr "$class" classnr
 321                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
 322                 done
 323                 append ${prefix}q "$(tcrules)" "$N"
 324                 export dev_${dir}="ifconfig $dev up txqueuelen 5 >&- 2>&-
 325 tc qdisc del dev $dev root >&- 2>&-
 326 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 327 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 328         done
 329         [ -n "$download" ] && {
 330                 add_insmod cls_u32
 331                 add_insmod em_u32
 332                 add_insmod act_connmark
 333                 add_insmod act_mirred
 334                 add_insmod sch_ingress
 335         }
 336         if [ -n "$halfduplex" ]; then
 337                 export dev_up="tc qdisc del dev $device root >&- 2>&-
 338 tc qdisc add dev $device root handle 1: hfsc
 339 tc filter add dev $device parent 1: protocol ip prio 10 u32 match u32 0 0 flowid 1:1 action mirred egress redirect dev ifb$ifbdev"
 340         elif [ -n "$download" ]; then
 341                 append dev_${dir} "tc qdisc del dev $device ingress >&- 2>&-
 342 tc qdisc add dev $device ingress
 343 tc filter add dev $device parent ffff: protocol ip prio 1 u32 match u32 0 0 flowid 1:1 action connmark action mirred egress redirect dev ifb$ifbdev" "$N"
 344         fi
 345         add_insmod cls_fw
 346         add_insmod sch_hfsc
 347         add_insmod sch_fq_codel
 348
 349         cat <<EOF
 350 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 351 $clsq
 352 }${ifbdev:+$dev_down
 353 $d_clsq
 354 $d_clsl
 355 $d_clsf
 356 }
 357 EOF
 358         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 359 }
 360
 361 start_interfaces() {
 362         local C="$1"
 363         for iface in $INTERFACES; do
 364                 start_interface "$iface" "$C"
 365         done
 366 }
 367
 368 add_rules() {
 369         local var="$1"
 370         local rules="$2"
 371         local prefix="$3"
 372
 373         for rule in $rules; do
 374                 unset iptrule
 375                 config_get target "$rule" target
 376                 config_get target "$target" classnr
 377                 config_get options "$rule" options
 378
 379                 ## If we want to override the TOS field, let's clear the DSCP field first.
 380                 [ ! -z "$(echo $options | grep 'TOS')" ] && {
 381                         s_options=${options%%TOS}
 382                         add_insmod xt_DSCP
 383                         parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
 384                         append "$var" "$iptrule" "$N"
 385                         unset iptrule
 386                 }
 387
 388                 target=$(($target | ($target << 4)))
 389                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target/0xff"
 390                 append "$var" "$iptrule" "$N"
 391         done
 392 }
 393
 394 start_cg() {
 395         local cg="$1"
 396         local iptrules
 397         local pktrules
 398         local sizerules
 399         enum_classes "$cg"
 400         add_rules iptrules "$ctrules" "iptables -t mangle -A qos_${cg}_ct"
 401         config_get classes "$cg" classes
 402         for class in $classes; do
 403                 config_get mark "$class" classnr
 404                 config_get maxsize "$class" maxsize
 405                 [ -z "$maxsize" -o -z "$mark" ] || {
 406                         add_insmod xt_length
 407                         append pktrules "iptables -t mangle -A qos_${cg} -m mark --mark $mark/0x0f -m length --length $maxsize: -j MARK --set-mark 0/0xff" "$N"
 408                 }
 409         done
 410         add_rules pktrules "$rules" "iptables -t mangle -A qos_${cg}"
 411         for iface in $INTERFACES; do
 412                 config_get classgroup "$iface" classgroup
 413                 config_get device "$iface" device
 414                 config_get ifbdev "$iface" ifbdev
 415                 config_get upload "$iface" upload
 416                 config_get download "$iface" download
 417                 config_get halfduplex "$iface" halfduplex
 418                 download="${download:-${halfduplex:+$upload}}"
 419                 append up "iptables -t mangle -A OUTPUT -o $device -j qos_${cg}" "$N"
 420                 append up "iptables -t mangle -A FORWARD -o $device -j qos_${cg}" "$N"
 421         done
 422         cat <<EOF
 423 $INSMOD
 424 iptables -t mangle -N qos_${cg} >&- 2>&-
 425 iptables -t mangle -N qos_${cg}_ct >&- 2>&-
 426 ${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg}_ct -j CONNMARK --save-mark --mask 0xff}
 427 iptables -t mangle -A qos_${cg} -j CONNMARK --restore-mark --mask 0x0f
 428 iptables -t mangle -A qos_${cg} -m mark --mark 0/0x0f -j qos_${cg}_ct
 429 $pktrules
 430 ${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg} -j CONNMARK --save-mark --mask 0xf0}
 431 $up$N${down:+${down}$N}
 432 EOF
 433         unset INSMOD
 434 }
 435
 436 start_firewall() {
 437         add_insmod xt_multiport
 438         add_insmod xt_CONNMARK
 439         stop_firewall
 440         for group in $CG; do
 441                 start_cg $group
 442         done
 443 }
 444
 445 stop_firewall() {
 446         # Builds up a list of iptables commands to flush the qos_* chains,
 447         # remove rules referring to them, then delete them
 448
 449         # Print rules in the mangle table, like iptables-save
 450         iptables -t mangle -S |
 451                 # Find rules for the qos_* chains
 452                 grep '^-N qos_\|-j qos_' |
 453                 # Exclude rules in qos_* chains (inter-qos_* refs)
 454                 grep -v '^-A qos_' |
 455                 # Replace -N with -X and hold, with -F and print
 456                 # Replace -A with -D
 457                 # Print held lines at the end (note leading newline)
 458                 sed -e '/^-N/{s/^-N/-X/;H;s/^-X/-F/}' \
 459                         -e 's/^-A/-D/' \
 460                         -e '${p;g}' |
 461                 # Make into proper iptables calls
 462                 # Note:  awkward in previous call due to hold space usage
 463                 sed -n -e 's/^./iptables -t mangle &/p'
 464 }
 465
 466 C="0"
 467 INTERFACES=""
 468 [ -e ./qos.conf ] && {
 469         . ./qos.conf
 470         config_cb
 471 } || config_load qos
 472
 473 C="0"
 474 for iface in $INTERFACES; do
 475         export C="$(($C + 1))"
 476 done
 477
 478 case "$1" in
 479         all)
 480                 start_interfaces "$C"
 481                 start_firewall
 482         ;;
 483         interface)
 484                 start_interface "$2" "$C"
 485         ;;
 486         interfaces)
 487                 start_interfaces
 488         ;;
 489         firewall)
 490                 case "$2" in
 491                         stop)
 492                                 stop_firewall
 493                         ;;
 494                         start|"")
 495                                 start_firewall
 496                         ;;
 497                 esac
 498         ;;
 499 esac