diff options
| -rw-r--r-- | package/network/ipv6/ipv6-support/Makefile | 46 | ||||
| -rwxr-xr-x | package/network/ipv6/ipv6-support/files/dhcpv6.sh | 52 | ||||
| -rw-r--r-- | package/network/ipv6/ipv6-support/files/ipv6.hotplug | 18 | ||||
| -rw-r--r-- | package/network/ipv6/ipv6-support/files/network6.config | 17 | ||||
| -rw-r--r-- | package/network/ipv6/ipv6-support/files/support.sh | 304 |
5 files changed, 437 insertions, 0 deletions
diff --git a/package/network/ipv6/ipv6-support/Makefile b/package/network/ipv6/ipv6-support/Makefile new file mode 100644 index 0000000..8397bc4 --- /dev/null +++ b/package/network/ipv6/ipv6-support/Makefile @@ -0,0 +1,46 @@ +# +# 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)) diff --git a/package/network/ipv6/ipv6-support/files/dhcpv6.sh b/package/network/ipv6/ipv6-support/files/dhcpv6.sh new file mode 100755 index 0000000..67fa174 --- /dev/null +++ b/package/network/ipv6/ipv6-support/files/dhcpv6.sh @@ -0,0 +1,52 @@ +#!/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 "$network" +} + diff --git a/package/network/ipv6/ipv6-support/files/ipv6.hotplug b/package/network/ipv6/ipv6-support/files/ipv6.hotplug new file mode 100644 index 0000000..e3379b6 --- /dev/null +++ b/package/network/ipv6/ipv6-support/files/ipv6.hotplug @@ -0,0 +1,18 @@ +#!/bin/sh +# Copyright (c) 2012 OpenWrt.org +[ "$DEVICE" == "lo" ] && exit 0 +. /lib/ipv6/support.sh + +local mode +config_get mode "$INTERFACE" mode + +case "$ACTION" in + ifup) + [ "$mode" != "downstream" ] && enable_static $INTERFACE $DEVICE + [ "$mode" == "upstream" ] && enable_upstream $INTERFACE $DEVICE + [ "$mode" == "downstream" ] && enable_downstream $INTERFACE $DEVICE + ;; + ifdown) + disable_interface $INTERFACE $DEVICE + ;; +esac diff --git a/package/network/ipv6/ipv6-support/files/network6.config b/package/network/ipv6/ipv6-support/files/network6.config new file mode 100644 index 0000000..4632bba --- /dev/null +++ b/package/network/ipv6/ipv6-support/files/network6.config @@ -0,0 +1,17 @@ +config interface wan + option mode upstream + option ula_prefix auto + option request_prefix auto + option prefix_fallback relay + option peerdns 1 + + +config interface lan + option mode downstream + option advertise_prefix 64 + option relay_master wan + + +config interface 6in4 + option mode static + list static_prefix 2001:DB8::/48 diff --git a/package/network/ipv6/ipv6-support/files/support.sh b/package/network/ipv6/ipv6-support/files/support.sh new file mode 100644 index 0000000..5525a3a --- /dev/null +++ b/package/network/ipv6/ipv6-support/files/support.sh @@ -0,0 +1,304 @@ +#!/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 +} + + |