--- /dev/null
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ipv6-support
+PKG_VERSION:=2012-11-29
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/ipv6-support
+ SECTION:=ipv6
+ CATEGORY:=IPv6
+ DEPENDS:=+kmod-ipv6 +6relayd +odhcp6c +6distributed +ip6tables +ubus
+ TITLE:=Basic IPv6-support for Customer Edge Routers
+ MAINTAINER:=Steven Barth <steven@midlink.org>
+ PKGARCH:=all
+endef
+
+define Package/ipv6-support/description
+This package provides basic IPv6 support including Router Discovery,
+DHCPv6 (client & server), prefix delegation and distribution.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/ipv6-support/install
+ $(INSTALL_DIR) $(1)/etc/hotplug.d/iface
+ $(INSTALL_DATA) ./files/ipv6.hotplug $(1)/etc/hotplug.d/iface/20-ipv6
+ $(INSTALL_DIR) $(1)/lib/ipv6
+ $(INSTALL_DATA) ./files/support.sh $(1)/lib/ipv6/support.sh
+ $(INSTALL_BIN) ./files/dhcpv6.sh $(1)/lib/ipv6/dhcpv6.sh
+ $(INSTALL_DIR) $(1)/etc/config
+ $(INSTALL_DATA) ./files/network6.config $(1)/etc/config/network6
+endef
+
+$(eval $(call BuildPackage,ipv6-support))
--- /dev/null
+#!/bin/sh
+# Copyright (c) 2012 OpenWrt.org
+. /lib/ipv6/support.sh
+. /lib/netifd/netifd-proto.sh
+
+local device="$1"
+local state="$2"
+local network=""
+
+resolve_network network "$device"
+
+# Unknown network
+[ -z "$network" ] && exit 0
+
+
+# Announce prefixes
+for prefix in $PREFIXES; do
+ announce_prefix "$prefix" "$network"
+done
+
+for prefix in $PREFIXES_LOST; do
+ announce_prefix "$prefix" "$network" delprefix
+done
+
+
+# Enable relaying if requested
+local prefix_fallback
+config_get prefix_fallback "$network" prefix_fallback
+[ "$prefix_fallback" == "relay" -a -z "$PREFIXES" -a "$state" != "unbound" ] &&
+ restart_relay "$network" 1
+
+# Disable relay if requested
+[ "$prefix_fallback" != "relay" -o -n "$PREFIXES" -o "$state" == "unbound" ] &&
+ stop_relay "$network"
+
+
+# Operations in case of success
+[ "$state" == "timeout" || "$state" == "unbound" ] && exit 0
+
+local peerdns
+config_get_bool peerdns "$network" peerdns 0
+[ "peerdns" -eq "1" ] && {
+ proto_init_update "*" 1
+ for server in $RDNSS; do
+ proto_add_dns_server "$server"
+ done
+ for domain in $DOMAINS; do
+ proto_add_dns_search "$domain"
+ done
+ proto_send_update "$network"
+}
+
--- /dev/null
+#!/bin/sh
+# Copyright (c) 2012 OpenWrt.org
+. /lib/functions.sh
+. /lib/functions/service.sh
+. /lib/functions/network.sh
+
+config_load network6
+
+
+conf_get() {
+ local __return="$1"
+ local __device="$2"
+ local __option="$3"
+ local __value=$(cat "/proc/sys/net/ipv6/conf/$device/$option")
+ eval "$__return=$__value"
+}
+
+
+conf_set() {
+ local device="$1"
+ local option="$2"
+ local value="$3"
+ echo "$value" > "/proc/sys/net/ipv6/conf/$device/$option"
+}
+
+
+stop_service() {
+ local __exe="$1"
+ SERVICE_PID_FILE="$2"
+ local __return="$3"
+
+ service_check "$__exe" && {
+ service_stop "$__exe"
+ [ -n "$__return" ] && eval "$__return=1"
+ }
+ rm -f "$SERVICE_PID_FILE"
+}
+
+
+start_service() {
+ local cmd="$1"
+ local pidfile="$2"
+
+ SERVICE_DAEMONIZE=1
+ SERVICE_WRITE_PID=1
+ SERVICE_PID_FILE="$pidfile"
+ service_start $cmd
+}
+
+
+resolve_network_add() {
+ local __section="$1"
+ local __device="$2"
+ local __return="$3"
+
+ local __cdevice
+ network_get_device __cdevice "$__section"
+ [ "$__cdevice" != "$__device" ] && return
+
+ eval "$__return"'="'"$__section"'"'
+}
+
+
+resolve_network() {
+ local __return="$1"
+ local __device="$2"
+ config_foreach resolve_network_add interface "$__device" "$__return"
+}
+
+
+announce_prefix() {
+ local prefix="$1"
+ local network="$2"
+ local cmd="$3"
+
+ local addr=$(echo "$prefix" | cut -d/ -f1)
+ local rem=$(echo "$prefix" | cut -d/ -f2)
+ local length=$(echo "$rem" | cut -d, -f1)
+ local prefer=""
+ local valid=""
+
+ # If preferred / valid provided
+ [ "$rem" != "$length" ] && {
+ prefer=$(echo "$rem" | cut -d, -f2)
+ valid=$(echo "$rem" | cut -d, -f3)
+ }
+
+ local msg='{"network": "'"$network"'", "prefix": "'"$addr"'", "length": '"$length"
+ [ -n "$valid" ] && msg="$msg"', "valid": '"$valid"', "preferred": '"$prefer"
+ [ -z "$cmd" ] && cmd=newprefix
+
+ ubus call 6distributed "$cmd" "$msg}"
+}
+
+
+disable_downstream() {
+ local network="$1"
+
+ # Notify the address distribution daemon
+ ubus call 6distributed deliface '{"network": "'"$network"'"}'
+
+ # Disable advertisement daemon
+ stop_service /usr/sbin/6relayd "/var/run/ipv6-downstream-$network.pid"
+}
+
+
+restart_relay_add() {
+ local __section="$1"
+ local __return="$2"
+ local __master="$3"
+ local __disable="$4"
+
+ network_is_up "$__section" || return
+
+ # Match master network
+ local __cmaster=""
+ config_get __cmaster "$__section" relay_master
+ [ "$__master" != "$__cmaster" ] && return
+
+ # Disable any active distribution
+ disable_downstream "$__section"
+
+ local __device=""
+ network_get_device __device "$__section"
+
+ # Coming from stop relay, reenable distribution
+ [ "$__disable" == "disable" ] && {
+ enable_downstream "$__section" "$__device"
+ return
+ }
+
+
+ eval "$__return"'="$'"$__return"' '"$__device"'"'
+}
+
+
+stop_relay() {
+ local network="$1"
+ local pid="/var/run/ipv6-relay-$network.pid"
+ local was_running=""
+
+ stop_service /usr/sbin/6relayd "$pid" was_running
+
+ # Reenable normal distribution on slave interfaces
+ [ -n "$was_running" ] && config_foreach restart_relay_add interface dummy "$network" disable
+}
+
+
+restart_relay() {
+ local network="$1"
+ local force="$2"
+ local pid="/var/run/ipv6-relay-$network.pid"
+
+ local not_running=0
+ [ -f "$pid" ] || not_running=1
+
+ # Don't start if not desired
+ [ "$force" != "1" ] && [ "$not_running" == "1" ] && return
+
+ # Kill current relay and distribution daemon
+ stop_relay "$network"
+
+ # Detect master device
+ local device=""
+ network_get_device device $network
+
+ # Generate command string
+ local cmd="/usr/sbin/6relayd -A $device "
+ config_foreach restart_relay_add interface cmd "$network"
+
+ # Start relay
+ start_service "$cmd" "$pid"
+}
+
+
+restart_master_relay() {
+ local network="$1"
+
+ # Disable active relaying to this interface
+ local relay_master
+ config_get relay_master "$network" relay_master
+ [ -n "$relay_master" ] && restart_relay "$relay_master"
+}
+
+
+disable_interface() {
+ local network="$1"
+
+ # Delete all prefixes routed to this interface
+ ubus call 6distributed delprefix '{"network": "'"$network"'"}'
+
+ # Restart Relay
+ restart_master_relay "$network"
+
+ # Disable distribution
+ disable_downstream "$network"
+
+ # Disable relay
+ stop_relay "$network"
+
+ # Disable DHCPv6 client if enabled, state script will take care
+ stop_service /usr/sbin/odhcp6c "/var/run/ipv6-upstream-$network.pid"
+}
+
+
+enable_static() {
+ local network="$1"
+ local device="$2"
+
+ # Enable global forwarding
+ local global_forward
+ conf_get global_forward all forwarding
+ [ "$global_forward" != "1" ] && conf_set all forwarding 1
+
+ # Configure device
+ conf_set "$device" accept_ra 1
+ conf_set "$device" forwarding 1
+
+ # ULA-integration
+ local ula_prefix=""
+ config_get ula_prefix "$network" ula_prefix
+
+ # ULA auto configuration (first init)
+ [ "$ula_prefix" == "auto" ] && {
+ local r1=""
+ local r2=""
+ local r3=""
+
+ # Sometimes results are empty, therefore try until it works...
+ while [ -z "$r1" -o -z "$r2" -o -z "$r3" ]; do
+ r1=$(printf "%02x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 256)))
+ r2=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536)))
+ r3=$(printf "%01x" $(($(</dev/urandom tr -dc 0-9 | dd bs=9 count=1) % 65536)))
+ done
+
+ ula_prefix="fd$r1:$r2:$r3::/48"
+
+ # Save prefix so it will be preserved across reboots
+ uci set network6.$network.ula_prefix=$ula_prefix
+ uci commit network6
+ }
+
+ # Announce ULA
+ [ -n "$ula_prefix" ] && announce_prefix $ula_prefix $network
+
+ # Announce all static prefixes
+ config_list_foreach "$network" static_prefix announce_prefix $network
+}
+
+
+enable_downstream() {
+ local network="$1"
+ local device="$2"
+
+ # Get IPv6 prefixes
+ local length
+ config_get length "$network" advertise_prefix
+ [ -z "$length" ] && length=64
+ [ "$length" -ne "0" ] && ubus call 6distributed newiface '{"network": "'"$network"'", "iface": "'"$device"'", "length": '"$length"'}'
+
+ # Start RD & DHCPv6 service
+ local pid="/var/run/ipv6-downstream-$network.pid"
+ start_service "/usr/sbin/6relayd -Rserver -Dserver . $device" "$pid"
+
+ # Try relaying if necessary
+ restart_master_relay "$network"
+}
+
+
+enable_upstream() {
+ local network="$1"
+ local device="$2"
+
+ # Configure device
+ conf_set "$device" accept_ra 2
+ conf_set "$device" forwarding 2
+
+ # Trigger RS
+ conf_set "$device" disable_ipv6 1
+ conf_set "$device" disable_ipv6 0
+
+ # Configure DHCPv6-client
+ local dhcp6_opts="$device"
+
+ # Configure DHCPv6-client (e.g. requested prefix)
+ local request_prefix
+ config_get request_prefix "$network" request_prefix
+ [ -z "$request_prefix" ] && request_prefix="auto"
+ [ "$request_prefix" != "no" ] && {
+ [ "$request_prefix" == "auto" ] && request_prefix=0
+ dhcp6_opts="-P$request_prefix $dhcp6_opts"
+ }
+
+ # Start DHCPv6 client
+ local pid="/var/run/ipv6-upstream-$network.pid"
+ start_service "/usr/sbin/odhcp6c -s/lib/ipv6/dhcpv6.sh $dhcp6_opts" "$pid"
+
+ # Refresh RA on all interfaces
+ for pid in /var/run/ipv6-downstream-*.pid; do
+ kill -SIGUSR1 $(cat "$pid")
+ done
+}
+
+
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