From: florian Date: Tue, 16 Aug 2011 20:34:12 +0000 (+0000) Subject: [package] ipv6: add tayga X-Git-Url: http://git.archive.openwrt.org/?a=commitdiff_plain;h=7f60b73795970dbe04f1e15053658b6b9438161d;p=packages.git [package] ipv6: add tayga TAYGA is an out-of-kernel stateless NAT64 implementation for Linux. It uses the TUN driver to exchange packets with the kernel, which is the same driver used by OpenVPN and QEMU/KVM. Signed-off-by: Alexey I. Froloff git-svn-id: svn://svn.openwrt.org/openwrt/packages@28013 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- diff --git a/ipv6/tayga/Makefile b/ipv6/tayga/Makefile new file mode 100644 index 000000000..c109a923f --- /dev/null +++ b/ipv6/tayga/Makefile @@ -0,0 +1,39 @@ +# $Id: Makefile 5624 2006-11-23 00:29:07Z nbd $ + +include $(TOPDIR)/rules.mk + +PKG_NAME:=tayga +PKG_VERSION:=0.9.2 +PKG_RELEASE:=1 + +PKG_SOURCE:=tayga-$(PKG_VERSION).tar.bz2 +PKG_SOURCE_URL:=http://www.litech.org/tayga/ +PKG_MD5SUM:=7a7b24165ce008df772f398d86fa280e +PKG_CAT:=bzcat + +PKG_BUILD_DIR:=$(BUILD_DIR)/tayga-$(PKG_VERSION) + +include $(INCLUDE_DIR)/package.mk + +define Package/tayga + SECTION:=ipv6 + CATEGORY:=IPv6 + DEPENDS:=+ip +kmod-ipv6 +kmod-tun + TITLE:=Out-of-kernel stateless NAT64 implementation for Linux + URL:=http://www.litech.org/tayga/ +endef + +define Package/tayga/description + TAYGA is an out-of-kernel stateless NAT64 implementation for + Linux. It uses the TUN driver to exchange packets with the + kernel, which is the same driver used by OpenVPN and QEMU/KVM. +endef + +define Package/tayga/install + $(INSTALL_DIR) $(1)/usr/sbin $(1)/lib/network $(1)/etc/hotplug.d/iface + $(INSTALL_BIN) $(PKG_BUILD_DIR)/tayga $(1)/usr/sbin/ + $(INSTALL_DATA) ./files/tayga.sh $(1)/lib/network/tayga.sh + $(INSTALL_DATA) ./files/tayga.hotplug $(1)/etc/hotplug.d/iface/95-tayga +endef + +$(eval $(call BuildPackage,tayga)) diff --git a/ipv6/tayga/files/tayga.hotplug b/ipv6/tayga/files/tayga.hotplug new file mode 100644 index 000000000..2539f0930 --- /dev/null +++ b/ipv6/tayga/files/tayga.hotplug @@ -0,0 +1,37 @@ +#!/bin/sh + +if [ "$ACTION" = ifup ]; then + . /etc/functions.sh + + include /lib/network + scan_interfaces + + update_tunnel() { + local cfg="$1" + + local proto + config_get proto "$cfg" proto + [ "$proto" = tayga ] || return 0 + + local wandev4 + config_get wandev4 "$cfg" wan4_device "$(find_tayga_wanif4)" + + local wandev6 + config_get wandev6 "$cfg" wan6_device "$(find_tayga_wanif6)" + + [ "$wandev4" = "$DEVICE" ] || [ "$wandev6" = "$DEVICE" ] || return 0 + + local wanip4=$(find_tayga_wanip4 "$wandev4") + local wanip6=$(find_tayga_wanip6 "$wandev6") + + [ -n "$wanip4" ] && [ -n "$wanip6" ] && { + uci_set_state network "$cfg" ipv4addr "$wanip4" + uci_set_state network "$cfg" ipv6addr "$wanip6" + + logger -t tayga-update "Re-establishing tayga NAT64 due to change on $INTERFACE ($DEVICE)" + ifup "$cfg" & + } + } + + config_foreach update_tunnel interface +fi diff --git a/ipv6/tayga/files/tayga.sh b/ipv6/tayga/files/tayga.sh new file mode 100644 index 000000000..9f515c619 --- /dev/null +++ b/ipv6/tayga/files/tayga.sh @@ -0,0 +1,139 @@ +# tayga.sh - NAT64 backend + +find_tayga_wanif4() { + local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}" + [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if" +} + +find_tayga_wanip4() { + local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }" + echo "${ip%%[^0-9.]*}" +} + +find_tayga_wanif6() { + local if=$(ip -6 r l e ::/0); if="${if#default* dev }"; if="${if%% *}" + [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if" +} + +find_tayga_wanip6() { + local ip=$(ip -6 a s dev "$1"); ip="${ip#*inet6 }" + echo "${ip%%[^0-9A-Fa-f:]*}" +} + +# Hook into scan_interfaces() to synthesize a .device option +# This is needed for /sbin/ifup to properly dispatch control +# to setup_interface_tayga() even if no .ifname is set in +# the configuration. +scan_tayga() { + config_set "$1" device "tayga-$1" +} + +coldplug_interface_tayga() { + setup_interface_tayga "tayga-$1" "$1" +} + +conf_rule_add() { + local cfg="$1" + local tmpconf="$2" + local ipv4_addr ipv6_addr + config_get ipv4_addr "$cfg" ipv4_addr "" + config_get ipv6_addr "$cfg" ipv6_addr "" + [ -n "$ipv4_addr" ] && [ -n "$ipv6_addr" ] && + echo "map $ipv4_addr $ipv6_addr" >>$tmpconf +} + +setup_interface_tayga() { + local iface="$1" + local cfg="$2" + local link="tayga-$cfg" + + local ipv4_addr ipv6_addr prefix dynamic_pool + + config_get ipv4_addr "$cfg" ipv4_addr + config_get ipv6_addr "$cfg" ipv6_addr + config_get prefix "$cfg" prefix + config_get dynamic_pool "$cfg" dynamic_pool + + local args + + include /lib/network + scan_interfaces + + local wanip4=$(uci_get network "$cfg" ipv4addr) + local wanip6=$(uci_get network "$cfg" ipv6addr) + + local wanif4=$(find_tayga_wanif4) + local wanif6=$(find_tayga_wanif6) + + [ -z "$wanip4" ] && { + [ -n "$wanif4" ] && { + wanip4=$(find_tayga_wanip4 "$wanif4") + uci_set_state network "$cfg" wan4_device "$wanif4" + } + } + + [ -z "$wanip6" ] && { + [ -n "$wanif6" ] && { + wanip6=$(find_tayga_wanip6 "$wanif6") + uci_set_state network "$cfg" wan6_device "$wanif6" + } + } + + [ -n "$wanip4" ] && [ -n "$wanip6" ] || { + echo "Cannot determine local IPv4 and IPv6 addressed for tayga NAT64 $cfg - skipping" + return + } + + local tmpconf="/var/etc/tayga-$cfg.conf" + args="-c $tmpconf" + mkdir -p /var/etc + mkdir -p /var/run/tayga/$cfg + + echo "tun-device $link" >$tmpconf + echo "ipv4-addr $ipv4_addr" >>$tmpconf + [ -n "$ipv6_addr" ] && + echo "ipv6-addr $ipv6_addr" >>$tmpconf + [ -n "$prefix" ] && + echo "prefix $prefix" >>$tmpconf + + config_foreach conf_rule_add map_rule "$tmpconf" + + [ -n "$dynamic_pool" ] && + echo "dynamic-pool $dynamic_pool" >>$tmpconf + echo "data-dir /var/run/tayga/$cfg" >>$tmpconf + + # creating the tunnel below will trigger a net subsystem event + # prevent it from touching or iface by disabling .auto here + uci_set_state network "$cfg" ifname $link + uci_set_state network "$cfg" auto 0 + + tayga $args --mktun + ip link set "$link" up + + ip addr add "$wanip4" dev "$link" + ip addr add "$wanip6" dev "$link" + + [ -n "$dynamic_pool" ] && + ip -4 route add "$dynamic_pool" dev "$link" + [ -n "$prefix" ] && + ip -6 route add "$prefix" dev "$link" + + start-stop-daemon -S -x tayga -- $args -p /var/run/$link.pid + + env -i ACTION="ifup" DEVICE="$link" INTERFACE="$cfg" PROTO="tayga" \ + /sbin/hotplug-call iface +} + +stop_interface_tayga() { + local cfg="$1" + local link="tayga-$cfg" + + env -i ACTION="ifdown" DEVICE="$link" INTERFACE="$cfg" PROTO="tayga" \ + /sbin/hotplug-call iface + + service_kill tayga "/var/run/$link.pid" + + ip link set "$link" down + ip addr flush dev "$link" + ip route flush dev "$link" +}