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Add mptcp support

This commit is contained in:
Ycarus 2018-01-23 15:35:00 +01:00
parent ec6e530e52
commit 40fdd921b9
7 changed files with 375 additions and 0 deletions

73
mptcp/Makefile Normal file
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#
# Copyright (C) 2014-2014 OpenWrt.org
# Copyright (C) 2018 Ycarus (Yannick Chabanois) <ycarus@zugaina.org>
#
# This is free software, licensed under the GNU General Public License v3 or later.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=mptcp
PKG_VERSION:=3.0
PKG_RELEASE:=1
PKG_MAINTAINER:=Ycarus (Yannick Chabanois) <ycarus@zugaina.org>
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/mptcp
SECTION:=net
CATEGORY:=Network
TITLE:=Multipath TCP configuration scrips
DEPENDS:=+ip +iptables
KCONFIG:=\
CONFIG_MPTCP=y \
CONFIG_MPTCP_BINDER=y \
CONFIG_MPTCP_FULLMESH=y \
CONFIG_MPTCP_NDIFFPORTS=y \
CONFIG_MPTCP_PM_ADVANCED=y \
CONFIG_MPTCP_REDUNDANT=y \
CONFIG_MPTCP_ROUNDROBIN=y \
CONFIG_MPTCP_SCHED_ADVANCED=y \
CONFIG_DEFAULT_FULLMESH=y \
CONFIG_DEFAULT_NDIFFPORTS=n \
CONFIG_DEFAULT_REDUNDANT=n \
CONFIG_DEFAULT_ROUNDROBIN=n \
CONFIG_DEFAULT_SCHEDULER=y \
CONFIG_DEFAULT_BINDER=n \
CONFIG_DEFAULT_DUMMY=n \
CONFIG_TCP_CONG_BALIA=y \
CONFIG_TCP_CONG_LIA=y \
CONFIG_TCP_CONG_OLIA=y \
CONFIG_TCP_CONG_WVEGAS=y \
CONFIG_DEFAULT_OLIA=y \
CONFIG_DEFAULT_TCP_CONG="olia"
PKGARCH:=all
endef
define Package/mptcp/description
MultiPath TCP (MPTCP) is an effort towards enabling the simultaneous use of
several IP-addresses/interfaces by a modification of TCP that presents a regular
TCP interface to applications, while in fact spreading data across several
subflows. Benefits of this include better resource utilization, better throughput
and smoother reaction to failures.
endef
define Build/Prepare
endef
define Build/Configure
endef
define Build/Compile
endef
define Package/mptcp/install
$(INSTALL_DIR) $(1)
$(CP) ./files/* $(1)/
endef
$(eval $(call BuildPackage,mptcp))

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#!/bin/sh
#
# Load the multipath config
#
# Author: Mario Krueger <openwrt at xedp3x.de>
# Released under GPL 3 or later
[ "$ACTION" = ifup -o "$ACTION" = ifupdate ] || exit 0
enable=`uci -q get network.globals.multipath` || exit 0
[ "$enable" = "enable" ] || exit 0
. /lib/functions.sh
. /lib/functions/network.sh
id=0
count=1
set_default() {
local mode
local config="$1"
count=$(($count+1))
local iface
config_get iface "$config" ifname
[ "$iface" = "$INTERFACE" ] && id=$count
config_get mode "$config" multipath
[ "$mode" = "master" ] && {
local gateway
network_get_gateway gateway $config || {
logger -t multipath master device $DEVICE has no gateway!
#Fallback: use upcomming interface...
network_get_gateway gateway $INTERFACE
config=$INTERFACE
}
local iface
config_get iface "$config" ifname
ip route del default
ip route add default scope global nexthop via $gateway dev $iface || {
#Fallback: use upcomming interface...
network_get_gateway gateway $INTERFACE
ip route add default scope global nexthop via $gateway dev $INTERFACE
logger -t multipath Faild to set default multipath device! Use $INTERFACE as fallback...
}
}
}
config_load network
config_foreach set_default interface
[ $id = 0 ] && {
logger -t multipath device $INTERFACE not fount!
echo device $INTERFACE not fount!
exit 1
}
mode=`uci -q get network.$INTERFACE.multipath` || mode='off'
case "$mode" in
"off")
multipath $DEVICE off
exit 0;;
"master")
mode="on";;
"on");;
"backup");;
"handover");;
*)
logger -t multipath Wrong multipath value for device $DEVICE
exit 1;;
esac
# Update kernel flags
multipath $DEVICE $mode
# IPv4 Updates:
local ipaddr
local gateway
local network
local netmask
network_get_ipaddr ipaddr $INTERFACE
network_get_gateway gateway $INTERFACE
network_get_subnet network $INTERFACE
__network_ifstatus netmask $INTERFACE "['ipv4-address'][0]['mask']"
network=`ipcalc.sh $network | sed -n '/NETWORK=/{;s/.*=//;s/ .*//;p;}'`
ip rule del table $id
ip route flush $id
ip rule add from $ipaddr table $id
ip route add $network/$netmask dev $DEVICE scope link table $id
ip route add default via $gateway dev $DEVICE table $id
ip route flush $id

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#!/bin/sh
# vim: set noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 :
. /lib/functions.sh
multipath=
mptcp_path_manager=
mptcp_schdeduler=
congestion=
multipath_status=0
config_load network
config_get multipath globals multipath
config_get mptcp_path_manager globals mptcp_path_manager
config_get mptcp_scheduler globals mptcp_scheduler
config_get congestion globals congestion
[ "$multipath" = "enable" ] && multipath_status=1
# Global MPTCP configuration
sysctl -qw net.mptcp.mptcp_enabled="$multipath_status"
[ "$multipath_status" = "0" ] && exit 0
[ -z "$mptcp_path_manager" ] || sysctl -qw net.mptcp.mptcp_path_manager="$mptcp_path_manager"
[ -z "$mptcp_scheduler" ] || sysctl -qw net.mptcp.mptcp_scheduler="$mptcp_scheduler"
[ -z "$congestion" ] || sysctl -qw net.ipv4.tcp_congestion_control="$congestion"
# Configuration by interface
_setup_interface() {
device=
config_get device "$1" ifname
[ -z "$device" ] && return 0
if_multipath=
config_get if_multipath "$1" multipath "off"
[ "$if_multipath" = "master" ] && if_multipath="on"
multipath "$device" "$if_multipath"
}
config_foreach _setup_interface interface

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mptcp/files/etc/init.d/mptcp Executable file
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#!/bin/sh /etc/rc.common
START=20
STOP=90
USE_PROCD=1
start_service() {
procd_open_instance
procd_set_param command hotplug-call net
procd_set_param respawn
procd_set_param watch network.globals
procd_close_instance
}
reload_service() {
ubus call network reload
}
service_running() {
ubus -t 30 wait_for network
}

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#!/bin/sh
uci -q batch <<EOF
set network.globals.mptcp_path_manager='fullmesh'
set network.globals.mptcp_scheduler='default'
set network.globals.congestion='olia'
EOF

102
mptcp/files/usr/bin/multipath Executable file
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#!/bin/sh
#
# Update the MP-TCP flags without the pached iproute2
#
# Author: Mario Krueger <openwrt at xedp3x.de>
# Released under GPL 3 or later
if [ -d "/proc/sys/net/mptcp" ]; then
if [ `cat /proc/sys/net/mptcp/mptcp_enabled` = 0 ]; then
echo "MPTCP is disabled!"
echo "Please set net.mptcp.mptcp_enabled = 1"
exit 1
fi
else
echo "Your device don't support multipath-TCP."
echo "You have to install the pached kernel to use MPTCP."
echo "See http://multipath-tcp.org/ for details"
exit 1
fi
case $1 in
"-h")
echo " Multipath-TCP configuration tool"
echo "show/update flags:"
echo " multipath [device]"
echo " multipath device {on | off | backup | handover}"
echo
echo "show established conections: -c"
echo "show mullmesh info: -f"
echo "show kernel config: -k"
echo
echo "Flag on the device, to enable/disable MPTCP for this interface. The backup-flag"
echo "will allow a subflow to be established across this interface, but only be used"
echo "as backup. Handover-flag indicates that his interface is not used at all (even "
echo "no subflow being established), as long as there are other interfaces available."
echo "See http://multipath-tcp.org/ for details"
echo
exit 0 ;;
"-c")
cat /proc/net/mptcp_net/mptcp
exit 0;;
"-f")
cat /proc/net/mptcp_fullmesh
exit 0;;
"-k")
echo Enabled: `cat /proc/sys/net/mptcp/mptcp_enabled`
echo Path Manager: `cat /proc/sys/net/mptcp/mptcp_path_manager`
echo Use checksum: `cat /proc/sys/net/mptcp/mptcp_checksum`
echo Scheduler: `cat /proc/sys/net/mptcp/mptcp_scheduler`
echo Syn retries: `cat /proc/sys/net/mptcp/mptcp_syn_retries`
echo Debugmode: `cat /proc/sys/net/mptcp/mptcp_debug`
echo
echo See http://multipath-tcp.org/ for details
exit 0 ;;
"")
for ifpath in /sys/class/net/*; do
$0 ${ifpath##*/}
done
exit 0;;
*);;
esac
DEVICE="$1"
TYPE="$2"
#FLAG_PATH=`find /sys/devices/ -path "*/net/$DEVICE/flags"`
[ -d "/sys/class/net/$DEVICE/" ] || {
echo "Device '$DEVICE' can't found!"
echo "Use the hardware name like in ifconfig"
exit 1
}
FLAG_PATH="/sys/class/net/$DEVICE/flags"
IFF=`cat $FLAG_PATH`
IFF_OFF="0x80000"
IFF_ON="0x00"
IFF_BACKUP="0x100000"
IFF_HANDOVER="0x200000"
IFF_MASK="0x380000"
case $TYPE in
"off") FLAG=$IFF_OFF;;
"on") FLAG=$IFF_ON;;
"backup") FLAG=$IFF_BACKUP;;
"handover") FLAG=$IFF_HANDOVER;;
"")
IFF=`printf "0x%02x" $(($IFF&$IFF_MASK))`
case "$IFF" in
$IFF_OFF) echo $DEVICE is deactivated;;
$IFF_ON) echo $DEVICE is in default mode;;
$IFF_BACKUP) echo $DEVICE is in backup mode;;
$IFF_HANDOVER) echo $DEVICE is in handover mode;;
*) echo "Unkown state!" && exit 1;;
esac
exit 0;;
*) echo "Unkown flag! Use 'multipath -h' for help" && exit 1;;
esac
printf "0x%02x" $(($(($IFF^$(($IFF&$IFF_MASK))))|$FLAG)) > $FLAG_PATH

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# vim: set ft=sh noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 :
SETROUTE=false
set_route() {
local multipath_config interface_gw interface_if
INTERFACE=$1
multipath_config=$(uci -q get "network.$INTERFACE.multipath" || echo "off")
#multipath_current_config=$(multipath $INTERFACE | grep deactivated)
#if [ "$multipath_config" != "off" ] && [ "$SETROUTE" != true ] && [ "$multipath_current_config" = "" ]; then
if [ "$multipath_config" != "off" ] && [ "$SETROUTE" != true ]; then
interface_gw=$(uci -q get "network.$INTERFACE.gateway")
interface_if=$(uci -q get "network.$INTERFACE.ifname")
ip route replace default scope global nexthop via $interface_gw dev $interface_if && SETROUTE=true
fi
}
# Get the current multipath status
multipath_status="off"
case "$(multipath "$OMR_TRACKER_DEVICE")" in
*default*) multipath_status="on" ;;
*backup*) multipath_status="backup" ;;
*handover*) multipath_status="handover" ;;
esac
default_gw=$(ip route show default | grep -v metric | awk '/default/ {print $3}')
current_interface_gw=$(uci -q get "network.$OMR_TRACKER_INTERFACE.gateway")
# An interface in error will never be used in MPTCP
if [ "$OMR_TRACKER_STATUS" = "ERROR" ]; then
[ "$multipath_status" = "off" ] && exit 0
_log "$OMR_TRACKER_DEVICE switched off"
multipath "$OMR_TRACKER_DEVICE" off
if [ "$default_gw" = "$current_interface_gw" ] || [ "$default_gw" = "" ]; then
config_load network
config_foreach set_route interface
fi
exit 0
fi
multipath_config=$(uci -q get "network.$OMR_TRACKER_INTERFACE.multipath" || echo "off")
[ "$multipath_config" = "master" ] && multipath_config="on"
[ "$multipath_status" = "$multipath_config" ] && exit 0
_log "$OMR_TRACKER_DEVICE switched to $multipath_config"
multipath "$OMR_TRACKER_DEVICE" "$multipath_config"