網絡限速腳本

 

在android中wifi限速主要是用到linux 的tc iptables ip 等命令，須要root 權限

下面是android wifi 限速的基本過程:

                                          1, 下載附件tc_bash.sh

                                          2, adb remount

                                          3 , adb push xx/tc_bash.sh system/

                                          4,  chmod a+x /system/tc_bash.sh

                                          5, cd /system/

                                          6, sh ./tc_bash.sh start  //開啓限速如今下行200kbit 上行100kbit

                                          7, sh ./tc_bash.sh stop  //刪除限速規則。

 

sh ./tc_bash.sh show 查看規則，以及具體效果的命令解圖：

注意 1，因爲android 提供tc 命令功能有限，因此有些在linux 上的rule 不能用，若有其餘需求，具體請修改shell 腳本。2，本例子是針對播放器限速的定義的規則是針對lo設備

 

 

附件：

tc_bash.sh

 

#!/bin/bash

#

#  tc uses the following units when passed as a parameter.

#  kbps: Kilobytes per second

#  mbps: Megabytes per second

#  kbit: Kilobits per second

#  mbit: Megabits per second

#  bps: Bytes per second

#       Amounts of data can be specified in:

#       kb or k: Kilobytes

#       mb or m: Megabytes

#       mbit: Megabits

#       kbit: Kilobits

#  To get the byte figure from bits, divide the number by 8 bit

#

#

# Name of the traffic control command.

TC=/system/bin/tc

# Name of the iptables command

IPTAB=/system/bin/iptables

# Name of ifconfig

IFCONFIG=/system/bin/ifconfig

# Name of awk

AWK=/sbin/awk

# The network interface we're planning on limiting bandwidth.

#IF=wlan0             # Interface

IF=lo            # Interface

# Download limit (in mega bits)

DNLD=200kbit         # DOWNLOAD Limit

# Upload limit (in mega bits)

UPLD=100kbit         # UPLOAD Limit

IP=127.0.0.1

IP=$($IFCONFIG $IF | $AWK '{print $3}')

# IP address of the machine we are controlling

#IP=10.58.27.32 # Host IP

echo"$IP"

# Filter options for limiting the intended interface.

U32="$TC filter add dev $IF protocol ip parent 1:0 prio 1 u32"

start() {

# We'll use Hierarchical Token Bucket (HTB) to shape bandwidth.

# For detailed configuration options, please consult Linux man

# page.

    $TC qdisc add dev $IF root handle 1: htb default 30

    $TC class add dev $IF parent 1: classid 1:1 htb rate $DNLD ceil $DNLD

    $TC class add dev $IF parent 1: classid 1:2 htb rate $UPLD ceil $UPLD

    $U32 match ip dst $IP/32flowid 1:1

    $U32 match ip src $IP/32flowid 1:2

# The first line creates the root qdisc, and the next two lines

# create two child qdisc that are to be used to shape download

# and upload bandwidth.

#

# The 4th and 5th line creates the filter to match the interface.

# The 'dst' IP address is used to limit download speed, and the

# 'src' IP address is used to limit upload speed.

}

start_limit_dw() {

#刪除原來的tc規則隊列

#$TC  qdisc del dev $IF root

#添加tc規則隊列

$TC  qdisc add dev $IF root handle 10: htb default 256

#生成根類

$TC class add dev $IF parent 10: classid 10:1 htb rate 500kbit ceil 500kbit

#支類列表用於限制速度

#這裏的rate指的是保證帶寬,ceil是最大帶寬。

$TC  class add dev $IF  parent 10:1 classid 10:10 htb rate $DNLD ceil $DNLD prio 1

#添加支類規則隊列

#採用sfq僞隨機隊列，而且10秒重置一次散列函數。

#android not support sfq

#$TC qdisc add dev $IF parent 10:10 handle 101: sfq perturb 10

#創建網絡包過濾器，設置fw。android not support fw

#$TC filter add dev $IF parent 10: protocol ip prio 10 handle 1 fw classid 10:10

#在iptables裏面設定mark值，與上面的handle值對應。

$IPTAB -t mangle -A POSTROUTING -d $IP -j MARK --set-mark 1

##刪除原來的tc規則隊列

#TC qdisc del dev eth0 root

#

##添加tc規則隊列

#TC qdisc add dev eth0 root handle 20: htb default 256

#

##生成根類

#TC class add dev eth0 parent 20: classid 20:1 htb rate 1mbit ceil 1mbit

#

##支類列表用於限制速度

#TC class add dev eth0 parent 20:1 classid 20:10 htb rate 40kbps ceil 40kbps prio 1

#

##添加支類規則隊列

#TC qdisc add dev eth0 parent 20:10 handle 201: sfq perturb 10

#

##創建網絡包過濾器

#TC filter add dev eth0 parent 20: protocol ip prio 100 handle 2 fw classid 20:10

#IPTAB -t mangle -A PREROUTING -s IP -j MARK --set-mark 2

}

stop() {

# Stop the bandwidth shaping.

    $TC qdisc del dev $IF root

}

restart() {

# Self-explanatory.

    stop

    sleep1

    start

}

show() {

# Display status of traffic control status.

    echo"tc -s qdisc ls dev ${IF}"

    $TC -s qdisclsdev $IF

    echo"tc -s class ls dev ${IF}"

    $TC -s classlsdev $IF

    echo"tc -s filter ls dev ${IF}"

    $TC -s filterlsdev $IF

}

case"$1"in

  start)

    echo-n"Starting bandwidth shaping: "

    start

    echo"done"

    ;;

  stop)

    echo-n"Stopping bandwidth shaping: "

    stop

    echo"done"

    ;;

  restart)

    echo-n"Restarting bandwidth shaping: "

    restart

    echo"done"

    ;;

  show)

    echo"Bandwidth shaping status for $IF:"

    show

    echo""

    ;;

  start_limit_dw)

    echo"start ext shaping  $IF:"

    start_limit_dw

    echo"done"

    ;;

  *)

    pwd=$(pwd)

    echo"Usage: tc_bash.sh {start|start_limit_dw|stop|restart|show}"

    ;;

esac

exit0