Add mptcp support

mptcp/files/usr/bin/multipath

@@ -0,0 +1,102 @@
+#!/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
+
+

mptcp/files/usr/share/omr/post-tracking.d/post-tracking

@@ -0,0 +1,45 @@
+# 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"