#!/bin/bash # # cbq.init v0.6.4 # Copyright (C) 1999 Pavel Golubev <pg@ksi-linux.com> # # chkconfig: 2345 11 89 # description: sets up CBQ-based traffic control # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # You can always get the latest version from # # ftp://ftp.equinox.gu.net/pub/linux/cbq/cbq.init # # # VERSION HISTORY # --------------- # v0.6.4- Lubomir Bulej <pallas@kadan.cz> # - added PRIO_* variables to allow easy control of filter priorities # - added caching to speed up CBQ start, the cache is invalidated # whenever any of the configuration files changes # - updated the readme section + some cosmetic fixes # v0.6.3- Lubomir Bulej <pallas@kadan.cz> # - removed setup of (unnecessary) class 1:1 - all classes # now use qdisc's default class 1:0 as their parent # - minor fix in the timecheck branch - classes # without leaf qdisc were not updated # - minor fix to avoid timecheck failure when run # at time with minutes 08 or 09 # - respect CBQ_PATH setting in environment # - made PRIO=5 default, rendering it optional in configs # - added support for route filter, see notes about REALM keyword # - added support for fw filter, see notes about MARK keyword # - added filter display to "list" and "stats" commands # - readme section update + various cosmetic fixes # v0.6.2- Catalin Petrescu <taz@dntis.ro> # - added tunnels interface handling # v0.6.1- Pavel Golubev <pg@ksi-linux.com> # - added sch_prio module loading # (thanks johan@iglo.virtual.or.id for reminding) # - resolved errors resulting from stricter syntax checking in bash2 # - Lubomir Bulej <pallas@kadan.cz> # - various cosmetic fixes # v0.6 - Lubomir Bulej <pallas@kadan.cz> # - attempt to limit number of spawned processes by utilizing # more of sed power (use sed instead of grep+cut) # - simplified TIME parser, using bash builtins # - added initial support for SFQ as leaf qdisc # - reworked the documentation part a little # - incorporated pending patches and ideas submitted by # following people for versions 0.3 into version 0.6 # - Miguel Freitas <miguel@cetuc.puc-rio.br> # - in case of overlapping TIME parameters, the last match is taken # - Juanjo Ciarlante <jjo@mendoza.gov.ar> # - chkconfig tags, list + stats startup parameters # - optional tc & ip command logging (into /var/run/cbq-*) # - Rafal Maszkowski <rzm@icm.edu.pl> # - PEAK parameter for setting TBF's burst peak rate # - fix for many config files (use find instead of ls) # v0.5.1- Lubomir Bulej <pallas@kadan.cz> # - fixed little but serious bug in RULE parser # v0.5 - Lubomir Bulej <pallas@kadan.cz> # - added options PARENT, LEAF, ISOLATED and BOUNDED. This allows # (with some attention to config file ordering) for creating # hierarchical structures of shapers with classes able (or unable) # to borrow bandwidth from their parents. # - class ID check allows hexadecimal numbers # - rewritten & simplified RULE parser # - cosmetic changes to improve readability # - reorganization to avoid duplicate code (timecheck etc.) # - timecheck doesn't check classes without TIME fields anymore # v0.4 - Lubomir Bulej <pallas@kadan.cz> # - small bugfix in RULE parsing code # - simplified configuration parsing code # - several small cosmetic changes # - TIME parameter can be now specified more than once allowing you to # differentiate RATE throughout the whole day. Time overlapping is # not checked, first match is taken. Midnight wrap (eg. 20:00-6:00) # is allowed and taken care of. # v0.3a4- fixed small bug in IF operator. Thanks to # Rafal Maszkowski <rzm@icm.edu.pl> # v0.3a3- fixed grep bug when using more than 10 eth devices. Thanks to David # Trcka <trcka@poda.cz>. # v0.3a2- fixed bug in "if" operator. Thanks kad@dgtu.donetsk.ua. # v0.3a - added TIME parameter. Example: TIME=00:00-19:00;64Kbit/6Kbit # So, between 00:00 and 19:00 the RATE will be 64Kbit. # Just start "cbq.init timecheck" periodically from cron # (every 10 minutes for example). DON'T FORGET though, to run # "cbq.init start" for CBQ to initialize. # v0.2 - Some cosmetic changes. Now it is more compatible with old bash # version. Thanks to Stanislav V. Voronyi <stas@cnti.uanet.kharkov.ua>. # v0.1 - First public release # # # README # ------ # # First of all - this is just a SIMPLE EXAMPLE of CBQ power. # Don't ask me "why" and "how" :) # # This script is meant to simplify setup and management of relatively simple # CBQ-based traffic control on Linux. Access to advanced networking features # of Linux kernel is provided by "ip" and "tc" utilities from A. Kuznetsov's # iproute2 package, available at ftp://ftp.inr.ac.ru/ip-routing. Because the # utilities serve primarily to translate user wishes to RTNETLINK commands, # their interface is rather austere, intolerant and requires quite a lot of # typing. And typing is what this script (hopefully) reduces. # # The advanced networking stuff in Linux is _very_ flexible and this script # aims to bring some of its features to the not-so-hard-core Linux users. Of # course, there is tradeoff between simplicity and flexibility and you might # find out that the flexibility suffered too much for your needs -- time to # face "ip" and "tc" interface :) # # To speed up the "start" command, simple caching was introduced in version # 0.6.4. The caching works so that the sequence of "tc" commands for given # configuration is stored in a file (/var/run/cbq-cache by default) which # is used next time "start" command is run to avoid repeated parsing of the # configuration files. This cache is invalidated whenever any of the CBQ # configuration files changes. If you want to run "cbq.init start" without # caching, run it as "cbq.init start nocache". If you want to force cache # invalidation, run it as "cbq.init start invalidate". Caching is disabled # if you have logging enabled (ie. LOG_FILE is not empty). # # All CBQ parameters are valid for Ethernet interfaces only, The script was # tested on various Linux kernel versions from series 2.1 to 2.4 and several # distributions with KSI Linux (Nostromo version) as the premier one. # # # HOW DOES IT WORK? # ----------------- # # Every traffic class must be described by a file in the $CBQ_PATH directory # (/etc/sysconfig/cbq by default) - one file per class. # # The config file names must obey mandatory format: cbq-<clsid>.<name> where # <clsid> is two-byte hexadecimal number in range <0001-FFFF> (which in fact # is a CBQ class ID) and <name> is the name of the class -- anything to help # you distinguish the configuration files. For small amount of classes it is # often possible (and convenient) to let <clsid> resemble bandwidth of the # class. # # Example of valid config name: # cbq-1280.My_first_shaper # # # The configuration file may contain the following parameters: # ### Device parameters # # DEVICE=<ifname>,<bandwidth>,<weight> mandatory # DEVICE=eth0,10Mbit,1Mbit # # <ifname> is the name of the interface you want to control # traffic on, e.g. eth0 # <bandwidth> is the physical bandwidth of the device, e.g. for # ethernet 10Mbit or 100Mbit, for arcnet 2Mbit # <weight> is tuning parameter that should be proportional to # <bandwidth>. As a rule of thumb: <weight> = <bandwidth> / 10 # # When you have more classes on one interfaces, it is enough to specify # <bandwidth> and <weight> only once, therefore in other files you can # have just DEVICE=<ifname>. # ### Class parameters # # RATE=<speed> mandatory # RATE=5Mbit # # Bandwidth allocated to class. Traffic going through the class is # shaped to conform to the given rate. You can use Kbit, Mbit or # bps, Kbps and Mbps as suffices.miting speed of the shaper. # You can use Kbit, Mbit or bps, Kbps, Mbps as suffixes. # # WEIGHT=<speed> mandatory # WEIGHT=500Kbit # # Tuning parameter that should be proportional to RATE. As a rule # of thumb, use WEIGHT ~= RATE / 10. # # PRIO=<1-8> optional, default 5 # PRIO=5 # # Priority of class traffic. The higher the number, the lesser # the priority. Priority of 5 is just fine. # # PARENT=<clsid> optional, default not set # PARENT=1280 # # Specifies ID of the parent class you want to attach the CBQ # class to. You might want to use LEAF=none for the parent class as # mentioned below. By using this parameter and carefully ordering the # configuration files, it is possible to create simple hierarchical # structures of CBQ classes. The ordering is important so that parent # classes are constructed prior to their children. # # LEAF=none|tbf|sfq optional, default "tbf" # # Tells the script to attach specified leaf queueing discipline to CBQ # class. By default, TBF is used. Note that attaching TBF to CBQ class # shapes the traffic to conform to TBF parameters and prevents the class # from borrowing bandwidth from its parent even if you have set BOUNDED # to "no". To allow the class to borrow bandwith (provided it is not # bounded), you must set LEAF to "none" or "sfq". # # If you want to ensure (approximately) fair sharing of bandwidth among # several hosts in the same class, you might want to specify LEAF=sfq to # attach SFQ as leaf queueing discipline to that class. Support for more # queueing disciplines will be probably added in future. # # BOUNDED=yes|no optional, default "yes" # # If set to "yes", the class is not allowed to borrow bandwidth from # its parent class in overlimit situation. If set to "no", the class # will be allowed to borrow bandwidth. # # Note: Don't forget to set LEAF to "none" or "sfq", otherwise the class will # not be able to borrow bandwith, # # ISOLATED=yes|no optional, default "no" # # If set to "yes", the class will not lend unused bandwidth to # its children. # ### TBF qdisc parameters # # BUFFER=<bytes>[/<bytes>] optional, default "10Kb/8" # # This parameter controls the depth of the token bucket. In other # words it represents the maximal burst size the class can send. # The optional part of parameter is used to determine the length # of intervals in packet sizes, for which the transmission times # are kept. # # LIMIT=<bytes> optional, default "15Kb" # # This parameter determines the maximal length of backlog. If # the queue contains more data than specified by LIMIT, the # newly arriving packets are dropped. The length of backlog # determines queue latency in case of congestion. # # PEAK=<speed> optional, default not set # # Maximal peak rate for short-term burst traffic. This allows you # to control the absolute peak rate the class can send at, because # single TBF that allows 256Kbit/s would of course allow rate of # 512Kbit for half a second or 1Mbit for a quarter of second. # # MTU=<bytes> optional, default "1500" # # Maximum number of bytes that can be sent at once over the # physical medium. This parameter is required when you specify # PEAK parameter. It defaults to MTU of ethernet - for other # media types you might want to change it. # # Note: Setting TBF as leaf qdisc will effectively prevent the class from # borrowing bandwidth from the ancestor class, because even if the # class allows more traffic to pass through, it is then shaped to # conform to TBF. # ### SFQ qdisc parameters # # The SFQ queueing discipline is a cheap way for sharing class bandwidth # among several hosts. As it is stochastic, the fairness is approximate but # it will do the job in most cases. If you want real fairness, you should # probably use WRR (weighted round robin) or WFQ queueing disciplines. Note # that SFQ does not do any traffic shaping - the shaping is done by the CBQ # class the SFQ is attached to. # # QUANTUM=<bytes> optional, default not set # # This parameter should not be set lower than link MTU, for ethernet # it is 1500b, or (with MAC header) 1514b which is the value used # in Alexey Kuznetsov's examples. # # PERTURB=<seconds> optional, default not set # # Period of hash function perturbation. In Alexey Kuznetsov's # examples the value used was 15 seconds. # ### Filter parameters # # RULE=[[saddr[/prefix]][:port],][daddr[/prefix]][:port] # # These parameters make up "u32" filter rules that select traffic for # each of the classes. You can use multiple RULE fields per config. # # Some examples: # # RULE=10.1.1.0/24:80 # selects traffic going to port 80 in network 10.1.1.0 # # RULE=10.2.2.5 # selects traffic going to any port on single host 10.2.2.5 # # RULE=:25,10.2.2.128/26:5000 # selects traffic going from anywhere on port 50 to # port 5000 in network 10.2.2.128 # # RULE=10.5.5.5:80, # selects traffic going from port 80 of single host 10.5.5.5 # # # # REALM=[srealm,][drealm] # # These parameters make up "route" filter rules that classify traffic # according to packet source/destination realms. For information about # realms, see Alexey Kuznetsov's IP Command Reference. This script # does not define any realms, it justs builds "tc filter" commands # for you if you need to classify traffic this way. # # Realm is either a decimal number or a string referencing entry in # /etc/iproute2/rt_realms (usually). # # Some examples: # # REALM=russia,internet # selects traffic going from realm "russia" to realm "internet" # # REALM=freenet, # selects traffic going from realm "freenet" # # REALM=10 # selects traffic going to realm 10 # # # MARK=<mark> # # These parameters make up "fw" filter rules that select traffic for # each of the classes accoring to firewall "mark". Mark is a decimal # number packets are tagged with if firewall rules say so. You can # use multiple MARK fields per config. # # # Note: Rules for different filter types can be combined. Attention must be # paid to the priority of filter rules, which can be set below using # PRIO_{U32,FW,ROUTE} variables. # ### Time ranging parameters # # TIME=<from>-<till>;<rate>/<weight>[/<peak>] optional # TIME=18:00-06:00;256Kbit/25Kbit # # This parameter allows you to differentiate the class bandwidth # throughout the day. You can specify multiple TIME parameters, if # the times overlap, last match is taken. The fields <rate>, <weight> # and <peak> correspond to parameters RATE, WEIGHT and PEAK (which # is optional and applies to TBF qdisc only). # ### # # Sample configuration file: cbq-1280.My_first_shaper # # -------------------------------------------------------------------------- # DEVICE=eth0,10Mbit,1Mbit # RATE=128Kbit # WEIGHT=10Kbit # PRIO=5 # RULE=192.128.1.0/24 # -------------------------------------------------------------------------- # # The configuration says that we will control traffic on 10Mbit ethernet # device eth0 and the traffic going to network 192.168.1.0 will be processed # with priority 5 and shaped to rate of 128Kbit. # # Note that you can control outgoing traffic only. If you want to control # traffic in both directions, you must set up CBQ for both interfaces. # # Consider the following example: # # +---------+ 192.168.1.1 # BACKBONE -----eth0-| linux |-eth1------*-[client] # +---------+ # # Imagine you want to shape traffic from backbone to the client to 28Kbit # and traffic in the opposite direction to 128Kbit. You need to setup CBQ # on both eth0 and eth1 interfaces, thus you need two config files: # # cbq-28.backbone-client # -------------------------------------------------------------------------- # DEVICE=eth1,10Mbit,1Mbit # RATE=28Kbit # WEIGHT=2Kbit # PRIO=5 # RULE=192.168.1.1 # -------------------------------------------------------------------------- # # cbq-128.client-backbone # -------------------------------------------------------------------------- # DEVICE=eth0,10Mbit,1Mbit # RATE=128Kbit # WEIGHT=10Kbit # PRIO=5 # RULE=192.168.1.1, # -------------------------------------------------------------------------- # # Pay attention to comma "," in the RULE field - it denotes source address! # # Enjoy. # ############################################################################# PATH="/sbin:/usr/sbin:/bin:/usr/bin" ### Filter priorities (must be different) PRIO_U32=100 PRIO_FW=200 PRIO_ROUTE=300 ### Respect external CBQ_PATH & CBQ_CACHE settings [ -z "$CBQ_PATH" ] && CBQ_PATH="/etc/sysconfig/cbq" [ -z "$CBQ_CACHE" ] && CBQ_CACHE="/var/run/cbq-cache" ### Uncomment for debugging #LOG_FILE="/var/run/cbq-$1" if [ "$2" = "compile" ]; then ### echo-only equivalent of "tc" command tc () { echo -e "tc $@\n" } # tc elif [ -n "$LOG_FILE" ]; then echo "# `date`" > $LOG_FILE ### Logging equivalent of "ip" command ip () { echo -e "\nip $@\n" >> $LOG_FILE /sbin/ip "$@" 2>&1 | tee -a $LOG_FILE } # ip ### Logging equivalent of "tc" command tc () { echo -e "\ntc $@\n" >> $LOG_FILE /sbin/tc "$@" 2>&1 | tee -a $LOG_FILE } # tc fi # command logging ### Remove CBQ from all devices cbq_off () { for dev in `ip link| sed -n '/^[0-9]/ { s/^[0-9]\+: \([a-z0-9]\+\)[:@].*/\1/; p; }'`; do cbq_device_off $dev done } # cbq_off ### Remove root class from device $1 cbq_device_off () { tc qdisc del dev $1 root 2> /dev/null } # cbq_device_off ### Display CBQ setup cbq_show () { for dev in $DEVICES; do echo ---[ $dev: queueing disciplines ]------------------------- echo; tc $1 qdisc show dev $dev; echo echo ---[ $dev: configured classes ]--------------------------- echo; tc $1 class show dev $dev; echo [ "$1" = "-s" ] && continue echo ---[ $dev: filtering rules ]------------------------------ echo; tc $1 filter show dev $dev; echo done } # cbq_show ### Check configuration and load DEVFIELDS/CLASSLIST cbq_init () { ### Check configuration in $CBQ_PATH directory and get CLASSLIST CLASSLIST=`find $CBQ_PATH -name 'cbq-*' -maxdepth 1 -printf "%f\n"| sort` if [ -z "$CLASSLIST" ]; then echo "**CBQ: not configured in $CBQ_PATH!" exit fi ### Collect all DEVICE fields from $CBQ_PATH/cbq-* DEVFIELDS=`find $CBQ_PATH -name 'cbq-*' -maxdepth 1 -exec sed -ne\ 's/#.*//; s/ //g; /^DEVICE=.*,.*,.*/ { s/.*=//; p; q; }; \ /^DEVICE=/ q' {} \;| sort -u` ### Check if there are any devices to set up if [ -z "$DEVFIELDS" ]; then echo "**CBQ: can't find any DEVICE field in $CBQ_PATH/cbq-*!" exit fi ### Extract all device names from DEVICE fields in $CBQ_PATH/cbq-* DEVICES=`echo "$DEVFIELDS"| sed 's/,.*//'| sort -u` ### Check for multiple devices with different DEVICE fields if [ `echo "$DEVICES"| wc -l` -ne `echo "$DEVFIELDS"| wc -l` ]; then echo "**CBQ: multiple (different) DEVICE fields for the same device found!" echo "$DEVFIELDS" exit fi } # cbq_init ### Load class configuration from file $1 cbq_load_class () { CNAME="$CBQ_PATH/$1" CFILE=`sed -e 's/#.*//; s/ //g; /^$/ d' $CNAME` CLASS=`echo $1| sed 's/^cbq-0*//; s/\..*//'` IDVAL=`/usr/bin/printf "%d" 0x$CLASS 2> /dev/null` if [ $? -ne 0 -o $IDVAL -eq 0 -o $IDVAL -gt 65535 ]; then echo "**CBQ: class ID of $1 must be in range <0001-FFFF>!" cbq_off exit fi ### Device parameters DEVICE=`echo "$CFILE"| sed -n '/^DEVICE=/ { s/.*=//; s/,.*//; p; q; }'` BANDWIDTH=`echo "$DEVFIELDS"| sed -n "/^$DEVICE,/ { s/.*,\(.*\),.*/\1/; p; q; }"` ### Class parameters CLASSID="1:$CLASS" PARENT=`echo "$CFILE"| sed -n '/^PARENT=/ { s/.*=0*//; p; q; }'` [ -z "$PARENT" ] && PARENT="1:0" || PARENT="1:$PARENT" LEAF=`echo "$CFILE"| sed -n '/^LEAF=/ { s/.*=//; p; q; }'` [ -z "$LEAF" ] && LEAF="tbf" BOUNDED=`echo "$CFILE"| sed -n '/^BOUNDED=/ { s/.*=//; p; q; }'` [ "$BOUNDED" = "no" ] && BOUNDED="" || BOUNDED="bounded" ISOLATED=`echo "$CFILE"| sed -n '/^ISOLATED=/ { s/.*=//; p; q; }'` [ "$ISOLATED" = "yes" ] && ISOLATED="isolated" || ISOLATED="" PRIO=`echo "$CFILE"| sed -n '/^PRIO=/ { s/.*=//; p; q; }'` [ -z "$PRIO" ] && PRIO="5" RATE=`echo "$CFILE"| sed -n '/^RATE=/ { s/.*=//; p; q; }'` WEIGHT=`echo "$CFILE"| sed -n '/^WEIGHT=/ { s/.*=//; p; q; }'` if [ -z "$RATE" -o -z "$WEIGHT" ]; then echo "**CBQ: missing RATE or WEIGHT field(s) in $1!" cbq_off exit fi ### Leaf qdisc parameters for TBF if [ "$LEAF" = "tbf" ]; then BUFFER=`echo "$CFILE"| sed -n '/^BUFFER=/ { s/.*=//; p; q; }'` [ -z "$BUFFER" ] && BUFFER="10Kb/8" LIMIT=`echo "$CFILE"| sed -n '/^LIMIT=/ { s/.*=//; p; q; }'` [ -z "$LIMIT" ] && LIMIT="15Kb" PEAK=`echo "$CFILE"| sed -n '/^PEAK=/ { s/.*=//; p; q; }'` [ -n "$PEAK" ] && PEAK="peakrate $PEAK" MTU=`echo "$CFILE"| sed -n '/^MTU=/ { s/.*=//; p; q; }'` [ -z "$MTU" ] && MTU="1500" ### Leaf qdisc parameters for SFQ elif [ "$LEAF" = "sfq" ]; then PERTURB=`echo "$CFILE"| sed -n '/^PERTURB=/ { s/.*=//; p; q; }'` [ -n "$PERTURB" ] && PERTURB="perturb $PERTURB" QUANTUM=`echo "$CFILE"| sed -n '/^QUANTUM=/ { s/.*=//; p; q; }'` [ -n "$QUANTUM" ] && QUANTUM="quantum $QUANTUM" fi } # cbq_load_class ### Convert time to absolute value cbq_time2abs () { _min=${1##*:} _min=${_min##0} echo $[${1%%:*}*60 + _min] } # cbq_time2abs ### Check if ip-route is installed if [ ! -f /sbin/tc -o ! -f /sbin/ip ]; then echo "**CBQ: ip-route2 utilities not installed!" exit fi ######################################################################## # See how were we called # ######################################################################## case "$1" in ### START ### start) ### If you have cbq, tbf, sfq and u32 compiled into kernel, ### make the following test condition fail... if /bin/true; then for module in sch_{cbq,tbf,sfq,prio} cls_{fw,u32,route}; do if ! modprobe $module; then echo "**CBQ: could not load module $module" exit fi done fi ### if we are in compile/nocache/logging mode, don't bother with cache if [ "$2" != "compile" -a "$2" != "nocache" -a -z "$LOG_FILE" ]; then ### if we don't have cache or the cache is old, (re)create it if [ ! -f $CBQ_CACHE -o "$2" = "invalidate" ]; then $0 start compile > $CBQ_CACHE elif [ `find $CBQ_PATH -maxdepth 1 -newer $CBQ_CACHE| wc -l` -gt 0 ]; then $0 start compile > $CBQ_CACHE fi ### run the cached commands exec /bin/sh $CBQ_CACHE 2> /dev/null fi ######################################################################## # Get all devices from configuration files $CBQ_PATH/cbq-* # # and setup CBQ root classes for them (if it is possible). # ######################################################################## ### Load DEVICES, DEVFIELDS and CLASSLIST cbq_init ### Try to discover interface bandwidth from DEVICE ### field and if OK - setup root class for this one for dev in $DEVICES; do ### Retrieve device bandwidth and weight DEVTEMP=`echo "$DEVFIELDS"| sed -n "/^$dev,/ { s/.*,\(.*\),\(.*\)/\1,\2/; p; q; }"` DEVBWDT=${DEVTEMP%%,*} DEVWGHT=${DEVTEMP##*,} ### If correctly set and the device is up, setup root class if [ -n "$DEVBWDT" -a -n "$DEVWGHT" ]; then if ! ip link | grep -q "$dev[:@].*UP"; then echo "**CBQ: could not find device $dev! CBQ turned off." cbq_off exit fi ### Remove old root qdisc from device cbq_device_off $dev ### Setup root class and queueing discipline for device tc qdisc add dev $dev root handle 1: cbq \ bandwidth $DEVBWDT avpkt 1000 cell 8 else echo "**CBQ: could not determine bandwidth or weight for device $dev!" echo "**CBQ: set the DEVICE field properly!" exit fi done # device ####################################################################### # Set up all classes configured in $CBQ_PATH/cbq-* # ####################################################################### for classfile in $CLASSLIST; do cbq_load_class $classfile ### Create class and setup leaf qdisc tc class add dev $DEVICE parent $PARENT classid $CLASSID cbq \ bandwidth $BANDWIDTH rate $RATE weight $WEIGHT prio $PRIO \ allot 1514 cell 8 maxburst 20 avpkt 1000 $BOUNDED $ISOLATED ### Setup leaf queueing discipline if [ "$LEAF" = "tbf" ]; then tc qdisc add dev $DEVICE parent $CLASSID tbf \ rate $RATE buffer $BUFFER limit $LIMIT mtu $MTU $PEAK elif [ "$LEAF" = "sfq" ]; then tc qdisc add dev $DEVICE parent $CLASSID sfq \ $PERTURB $QUANTUM fi ### Create fw filter for MARK fields MARKSET=`echo "$CFILE"| sed -n '/^MARK/ { s/.*=//; p; }'` if [ -n "$MARKSET" ]; then for mark in $MARKSET; do ### Attach fw filter to root class tc filter add dev $DEVICE parent 1:0 protocol ip \ prio $PRIO_FW handle $mark fw classid $CLASSID done ### mark fi ### Create route filter for REALM fields REALMSET=`echo "$CFILE"| sed -n '/^REALM/ { s/.*=//; p; }'` if [ -n "$REALMSET" ]; then for realm in $REALMSET; do ### Separate source/destination realms DREALM=${realm##*,}; SREALM="" [ "$DREALM" != "$realm" ] && SREALM=${realm%%,*} [ "$DREALM" = "*" ] && DREALM="" [ "$SREALM" = "*" ] && SREALM="" [ -n "$SREALM" ] && SREALM="from $SREALM" [ -n "$DREALM" ] && DREALM="to $DREALM" ### Attach route filter to the root class tc filter add dev $DEVICE parent 1:0 protocol ip \ prio $PRIO_ROUTE route $SREALM $DREALM classid $CLASSID done ### realm fi ### Create u32 filter for addresses specified by RULE fields RULESET=`echo "$CFILE"| sed -n '/^RULE/ { s/.*=//; p; }'` [ -z "$RULESET" ] && continue ### Rules present, parse them for rule in $RULESET; do u32_s=""; u32_d="" SADDR=""; SPORT="" ### Split up destination DST=${rule##*,} DADDR=${DST%%:*} [ "$DADDR" != "$DST" ] && DPORT=${DST##*:} || DPORT="" [ "$DADDR" = "*" ] && DADDR="" ### Split up source (if specified) if [ "$DST" != "$rule" ]; then SRC=${rule%%,*} SADDR=${SRC%%:*} [ "$SADDR" != "$SRC" ] && SPORT=${SRC##*:} [ "$SADDR" = "*" ] && SADDR="" fi ### Compose the u32 filter rules [ -n "$SPORT" ] && u32_s="match ip sport $SPORT 0xffff" [ -n "$SADDR" ] && u32_s="match ip src $SADDR $u32_s" [ -n "$DPORT" ] && u32_d="match ip dport $DPORT 0xffff" [ -n "$DADDR" ] && u32_d="match ip dst $DADDR $u32_d" ### Uncomment the following if you want to see parsed rules #echo "$rule: $u32_s $u32_d" ### Attach u32 filter to the appropriate class tc filter add dev $DEVICE parent 1:0 protocol ip \ prio $PRIO_U32 u32 $u32_s $u32_d flowid $CLASSID done ### rule done ### class file ;; ### TIMECHECK ### timecheck) ### Load DEVICES, DEVFIELDS and CLASSLIST cbq_init ### Current time in hh:mm format TIME_NOW=`date +%k:%M` TIME_ABS=`cbq_time2abs $TIME_NOW` ### Check every config file for TIME parameter for classfile in $CLASSLIST; do TIMERATES=`sed -ne 's/#.*//; s/ //g; /^TIME/ { s/.*=//; p; }' $CBQ_PATH/$classfile` [ -z "$TIMERATES" ] && continue MATCH=0; CHANGE=0; for timerate in $TIMERATES; do ### Split up TIME parameter INTERVAL=${timerate%%;*}; PARAMS=${timerate##*;} BEG_TIME=${INTERVAL%%-*}; END_TIME=${INTERVAL##*-} ### Compute interval boundaries BEG_ABS=`cbq_time2abs $BEG_TIME` END_ABS=`cbq_time2abs $END_TIME` ### Midnight wrap fixup if [ $BEG_ABS -gt $END_ABS ]; then [ $TIME_ABS -le $END_ABS ] && TIME_ABS=$[TIME_ABS + 24*60] END_ABS=$[END_ABS + 24*60] fi ### If the time matches, remember params and set MATCH flag if [ $TIME_ABS -ge $BEG_ABS -a $TIME_ABS -lt $END_ABS ]; then TMP_RATE=${PARAMS%%/*} TMP_WGHT=${PARAMS#*/} TMP_PEAK=${TMP_WGHT#*/} [ "$TMP_PEAK" = "$TMP_WGHT" ] && TMP_PEAK="" || TMP_WGHT={$TMP_WGHT%%/*} [ -n "$TMP_PEAK" ] && TMP_PEAK="peakrate $TMP_PEAK" MATCH=1 fi done ### timerate cbq_load_class $classfile ### Get current RATE of CBQ class RATE_NOW=`tc class show dev $DEVICE| sed -n \ "/cbq $CLASSID / { s/.*rate //; s/ .*//; p; q; }"` [ -z "$RATE_NOW" ] && continue ### Time interval match is found if [ $MATCH -ne 0 ]; then ### Check if there is any change in class RATE if [ "$RATE_NOW" != "$TMP_RATE" ]; then NEW_RATE="$TMP_RATE" NEW_WGHT="$TMP_WGHT" NEW_PEAK="$TMP_PEAK" CHANGE=1 fi ### Match not found, reset to default RATE if necessary elif [ "$RATE_NOW" != "$RATE" ]; then NEW_WGHT="$WEIGHT" NEW_RATE="$RATE" NEW_PEAK="$PEAK" CHANGE=1 fi ### If there's a change, replace CBQ class and leaf qdisc [ $CHANGE -ne 1 ] && continue ### Replace CBQ class tc class replace dev $DEVICE classid $CLASSID cbq \ bandwidth $BANDWIDTH rate $NEW_RATE weight $NEW_WGHT prio $PRIO \ allot 1514 cell 8 maxburst 20 avpkt 1000 $BOUNDED $ISOLATED echo "**CBQ: $TIME_NOW: class $CLASS on $DEVICE changed rate ($RATE_NOW -> $NEW_RATE)" ### Get leaf qdisc handle LEAF_HND=`tc class show dev $DEVICE| sed -n \ "/cbq $CLASSID .* leaf / { s/.*leaf //; s/ .*//; p; q; }"` [ -z "$LEAF_HND" ] && continue ### Replace leaf qdisc (if any) if [ "$LEAF" = "tbf" ]; then tc qdisc replace dev $DEVICE handle $LEAF_HND tbf \ rate $NEW_RATE buffer $BUFFER limit $LIMIT mtu $MTU $NEW_PEAK fi done ### class file ;; ### STOP ### stop) cbq_off ;; ### RESTART ### restart) $0 stop $0 start ;; ### LIST ### list) cbq_init cbq_show ;; ### STATS ### stats) cbq_init cbq_show -s ;; ### default ### *) echo "Usage: " `basename $0` "{start [nocache|invalidate]|stop|restart|timecheck|list|stats}" esac