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 $device"
 142                                 fi
 143                         ;;
 144                         *:srciface)
 145                                 append "$var" "-i $value"
 146                         ;;
 147                         1:pktsize)
 148                                 value="$(echo "$value" | sed -e 's,-,:,g')"
 149                                 add_insmod xt_length
 150                                 append "$var" "-m length --length $value"
 151                         ;;
 152                         1:limit)
 153                                 add_insmod xt_limit
 154                                 append "$var" "-m limit --limit $value"
 155                         ;;
 156                         1:tcpflags)
 157                                 case "$proto" in
 158                                         tcp) append "$var" "-m tcp --tcp-flags ALL $value";;
 159                                         *) unset $var; return 0;;
 160                                 esac
 161                         ;;
 162                         1:mark)
 163                                 config_get class "${value##!}" classnr
 164                                 [ -z "$class" ] && continue;
 165                                 case "$value" in
 166                                         !*) append "$var" "-m mark ! --mark $class/0x0f";;
 167                                         *) append "$var" "-m mark --mark $class/0x0f";;
 168                                 esac
 169                         ;;
 170                         1:TOS)
 171                                 add_insmod xt_DSCP
 172                                 config_get TOS "$rule" 'TOS'
 173                                 suffix="-j TOS --set-tos "${TOS:-"Normal-Service"}
 174                         ;;
 175                         1:DSCP)
 176                                 add_insmod xt_DSCP
 177                                 config_get DSCP "$rule" 'DSCP'
 178                                 [ -z "${DSCP%%[EBCA]*}" ] && set_value="--set-dscp-class $DSCP" \
 179                                 || set_value="--set-dscp $DSCP"
 180                                 suffix="-j DSCP $set_value"
 181                         ;;
 182                 esac
 183         done
 184         append "$var" "$suffix"
 185         case "$ports:$proto" in
 186                 1:)     parse_matching_rule "$var" "$section" "$options" "$prefix" "$suffix" "udp";;
 187         esac
 188 }
 189
 190 config_cb() {
 191         option_cb() {
 192                 return 0
 193         }
 194
 195         # Section start
 196         case "$1" in
 197                 interface)
 198                         config_set "$2" "classgroup" "Default"
 199                         config_set "$2" "upload" "128"
 200                 ;;
 201                 classify|default|reclassify)
 202                         option_cb() {
 203                                 append options "$1"
 204                         }
 205                 ;;
 206         esac
 207
 208     # Section end
 209         config_get TYPE "$CONFIG_SECTION" TYPE
 210         case "$TYPE" in
 211                 interface)
 212                         config_get_bool enabled "$CONFIG_SECTION" enabled 1
 213                         [ 1 -eq "$enabled" ] || return 0
 214                         config_get classgroup "$CONFIG_SECTION" classgroup
 215                         config_set "$CONFIG_SECTION" ifbdev "$C"
 216                         C=$(($C+1))
 217                         append INTERFACES "$CONFIG_SECTION"
 218                         config_set "$classgroup" enabled 1
 219                         config_get device "$CONFIG_SECTION" device
 220                         [ -z "$device" ] && {
 221                                 device="$(find_ifname ${CONFIG_SECTION})"
 222                                 config_set "$CONFIG_SECTION" device "$device"
 223                         }
 224                 ;;
 225                 classgroup) append CG "$CONFIG_SECTION";;
 226                 classify|default|reclassify)
 227                         case "$TYPE" in
 228                                 classify) var="ctrules";;
 229                                 *) var="rules";;
 230                         esac
 231                         config_get target "$CONFIG_SECTION" target
 232                         config_set "$CONFIG_SECTION" options "$options"
 233                         append "$var" "$CONFIG_SECTION"
 234                         unset options
 235                 ;;
 236         esac
 237 }
 238
 239
 240 enum_classes() {
 241         local c="0"
 242         config_get classes "$1" classes
 243         config_get default "$1" default
 244         for class in $classes; do
 245                 c="$(($c + 1))"
 246                 config_set "${class}" classnr $c
 247                 case "$class" in
 248                         $default) class_default=$c;;
 249                 esac
 250         done
 251         class_default="${class_default:-$c}"
 252 }
 253
 254 cls_var() {
 255         local varname="$1"
 256         local class="$2"
 257         local name="$3"
 258         local type="$4"
 259         local default="$5"
 260         local tmp tmp1 tmp2
 261         config_get tmp1 "$class" "$name"
 262         config_get tmp2 "${class}_${type}" "$name"
 263         tmp="${tmp2:-$tmp1}"
 264         tmp="${tmp:-$tmp2}"
 265         export ${varname}="${tmp:-$default}"
 266 }
 267
 268 tcrules() {
 269         _dir=/usr/lib/qos
 270         [ -e $_dir/tcrules.awk ] || _dir=.
 271         echo "$cstr" | awk \
 272                 -v device="$dev" \
 273                 -v linespeed="$rate" \
 274                 -v direction="$dir" \
 275                 -f $_dir/tcrules.awk
 276 }
 277
 278 start_interface() {
 279         local iface="$1"
 280         local num_ifb="$2"
 281         config_get device "$iface" device
 282         config_get_bool enabled "$iface" enabled 1
 283         [ -z "$device" -o 1 -ne "$enabled" ] && {
 284                 return 1
 285         }
 286         config_get upload "$iface" upload
 287         config_get_bool halfduplex "$iface" halfduplex
 288         config_get download "$iface" download
 289         config_get classgroup "$iface" classgroup
 290         config_get_bool overhead "$iface" overhead 0
 291
 292         download="${download:-${halfduplex:+$upload}}"
 293         enum_classes "$classgroup"
 294         for dir in ${halfduplex:-up} ${download:+down}; do
 295                 case "$dir" in
 296                         up)
 297                                 [ "$overhead" = 1 ] && upload=$(($upload * 98 / 100 - (15 * 128 / $upload)))
 298                                 dev="$device"
 299                                 rate="$upload"
 300                                 dl_mode=""
 301                                 prefix="cls"
 302                         ;;
 303                         down)
 304                                 [ "$(ls -d /proc/sys/net/ipv4/conf/ifb* 2>&- | wc -l)" -ne "$num_ifb" ] && add_insmod ifb numifbs="$num_ifb"
 305                                 config_get ifbdev "$iface" ifbdev
 306                                 [ "$overhead" = 1 ] && download=$(($download * 98 / 100 - (80 * 1024 / $download)))
 307                                 dev="ifb$ifbdev"
 308                                 rate="$download"
 309                                 dl_mode=1
 310                                 prefix="d_cls"
 311                         ;;
 312                         *) continue;;
 313                 esac
 314                 cstr=
 315                 for class in $classes; do
 316                         cls_var pktsize "$class" packetsize $dir 1500
 317                         cls_var pktdelay "$class" packetdelay $dir 0
 318                         cls_var maxrate "$class" limitrate $dir 100
 319                         cls_var prio "$class" priority $dir 1
 320                         cls_var avgrate "$class" avgrate $dir 0
 321                         cls_var qdisc "$class" qdisc $dir ""
 322                         cls_var filter "$class" filter $dir ""
 323                         config_get classnr "$class" classnr
 324                         append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
 325                 done
 326                 append ${prefix}q "$(tcrules)" "$N"
 327                 export dev_${dir}="ifconfig $dev up >&- 2>&-
 328 tc qdisc del dev $dev root >&- 2>&-
 329 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 330 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"
 331         done
 332         [ -n "$download" ] && {
 333                 add_insmod cls_u32
 334                 add_insmod em_u32
 335                 add_insmod act_connmark
 336                 add_insmod act_mirred
 337                 add_insmod sch_ingress
 338         }
 339         if [ -n "$halfduplex" ]; then
 340                 export dev_up="tc qdisc del dev $device root >&- 2>&-
 341 tc qdisc add dev $device root handle 1: hfsc
 342 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"
 343         elif [ -n "$download" ]; then
 344                 append dev_${dir} "tc qdisc del dev $device ingress >&- 2>&-
 345 tc qdisc add dev $device ingress
 346 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"
 347         fi
 348         add_insmod cls_fw
 349         add_insmod sch_hfsc
 350         add_insmod sch_fq_codel
 351
 352         cat <<EOF
 353 ${INSMOD:+$INSMOD$N}${dev_up:+$dev_up
 354 $clsq
 355 }${ifbdev:+$dev_down
 356 $d_clsq
 357 $d_clsl
 358 $d_clsf
 359 }
 360 EOF
 361         unset INSMOD clsq clsf clsl d_clsq d_clsl d_clsf dev_up dev_down
 362 }
 363
 364 start_interfaces() {
 365         local C="$1"
 366         for iface in $INTERFACES; do
 367                 start_interface "$iface" "$C"
 368         done
 369 }
 370
 371 add_rules() {
 372         local var="$1"
 373         local rules="$2"
 374         local prefix="$3"
 375
 376         for rule in $rules; do
 377                 unset iptrule
 378                 config_get target "$rule" target
 379                 config_get target "$target" classnr
 380                 config_get options "$rule" options
 381
 382                 ## If we want to override the TOS field, let's clear the DSCP field first.
 383                 [ ! -z "$(echo $options | grep 'TOS')" ] && {
 384                         s_options=${options%%TOS}
 385                         add_insmod xt_DSCP
 386                         parse_matching_rule iptrule "$rule" "$s_options" "$prefix" "-j DSCP --set-dscp 0"
 387                         append "$var" "$iptrule" "$N"
 388                         unset iptrule
 389                 }
 390
 391                 target=$(($target | ($target << 4)))
 392                 parse_matching_rule iptrule "$rule" "$options" "$prefix" "-j MARK --set-mark $target/0xff"
 393                 append "$var" "$iptrule" "$N"
 394         done
 395 }
 396
 397 start_cg() {
 398         local cg="$1"
 399         local iptrules
 400         local pktrules
 401         local sizerules
 402         enum_classes "$cg"
 403         add_rules iptrules "$ctrules" "iptables -t mangle -A qos_${cg}_ct"
 404         config_get classes "$cg" classes
 405         for class in $classes; do
 406                 config_get mark "$class" classnr
 407                 config_get maxsize "$class" maxsize
 408                 [ -z "$maxsize" -o -z "$mark" ] || {
 409                         add_insmod xt_length
 410                         append pktrules "iptables -t mangle -A qos_${cg} -m mark --mark $mark/0x0f -m length --length $maxsize: -j MARK --set-mark 0/0xff" "$N"
 411                 }
 412         done
 413         add_rules pktrules "$rules" "iptables -t mangle -A qos_${cg}"
 414         for iface in $INTERFACES; do
 415                 config_get classgroup "$iface" classgroup
 416                 config_get device "$iface" device
 417                 config_get ifbdev "$iface" ifbdev
 418                 config_get upload "$iface" upload
 419                 config_get download "$iface" download
 420                 config_get halfduplex "$iface" halfduplex
 421                 download="${download:-${halfduplex:+$upload}}"
 422                 append up "iptables -t mangle -A OUTPUT -o $device -j qos_${cg}" "$N"
 423                 append up "iptables -t mangle -A FORWARD -o $device -j qos_${cg}" "$N"
 424         done
 425         cat <<EOF
 426 $INSMOD
 427 iptables -t mangle -N qos_${cg} >&- 2>&-
 428 iptables -t mangle -N qos_${cg}_ct >&- 2>&-
 429 ${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg}_ct -j CONNMARK --save-mark --mask 0xff}
 430 iptables -t mangle -A qos_${cg} -j CONNMARK --restore-mark --mask 0x0f
 431 iptables -t mangle -A qos_${cg} -m mark --mark 0/0x0f -j qos_${cg}_ct
 432 $pktrules
 433 ${iptrules:+${iptrules}${N}iptables -t mangle -A qos_${cg} -j CONNMARK --save-mark --mask 0xff}
 434 $up$N${down:+${down}$N}
 435 EOF
 436         unset INSMOD
 437 }
 438
 439 start_firewall() {
 440         add_insmod xt_multiport
 441         add_insmod xt_CONNMARK
 442         stop_firewall
 443         for group in $CG; do
 444                 start_cg $group
 445         done
 446 }
 447
 448 stop_firewall() {
 449         # Builds up a list of iptables commands to flush the qos_* chains,
 450         # remove rules referring to them, then delete them
 451
 452         # Print rules in the mangle table, like iptables-save
 453         iptables -t mangle -S |
 454                 # Find rules for the qos_* chains
 455                 grep '^-N qos_\|-j qos_' |
 456                 # Exclude rules in qos_* chains (inter-qos_* refs)
 457                 grep -v '^-A qos_' |
 458                 # Replace -N with -X and hold, with -F and print
 459                 # Replace -A with -D
 460                 # Print held lines at the end (note leading newline)
 461                 sed -e '/^-N/{s/^-N/-X/;H;s/^-X/-F/}' \
 462                         -e 's/^-A/-D/' \
 463                         -e '${p;g}' |
 464                 # Make into proper iptables calls
 465                 # Note:  awkward in previous call due to hold space usage
 466                 sed -n -e 's/^./iptables -t mangle &/p'
 467 }
 468
 469 C="0"
 470 INTERFACES=""
 471 [ -e ./qos.conf ] && {
 472         . ./qos.conf
 473         config_cb
 474 } || config_load qos
 475
 476 C="0"
 477 for iface in $INTERFACES; do
 478         export C="$(($C + 1))"
 479 done
 480
 481 case "$1" in
 482         all)
 483                 start_interfaces "$C"
 484                 start_firewall
 485         ;;
 486         interface)
 487                 start_interface "$2" "$C"
 488         ;;
 489         interfaces)
 490                 start_interfaces
 491         ;;
 492         firewall)
 493                 case "$2" in
 494                         stop)
 495                                 stop_firewall
 496                         ;;
 497                         start|"")
 498                                 start_firewall
 499                         ;;
 500                 esac
 501         ;;
 502 esac