6to4: support multiple internal networks, use state vars for radvd config
SVN-Revision: 24219
This commit is contained in:
Jo-Philipp Wich
parent
41b3383499
commit
7acaafb61b
2 changed files with 108 additions and 47 deletions
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@ -8,7 +8,7 @@
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include $(TOPDIR)/rules.mk
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PKG_NAME:=6to4
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PKG_VERSION:=2
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PKG_VERSION:=3
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PKG_RELEASE:=1
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include $(INCLUDE_DIR)/package.mk
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@ -18,6 +18,72 @@ find_6to4_prefix() {
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printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
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}
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set_6to4_radvd_interface() {
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local cfgid="$1"
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local lanif="${2:-lan}"
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local ifsection=""
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find_ifsection() {
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local net
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local cfg="$1"
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config_get net "$cfg" interface
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[ "$net" = "$lanif" ] && {
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ifsection="$cfg"
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return 1
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}
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}
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config_foreach find_ifsection interface
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[ -z "$ifsection" ] && {
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ifsection="iface_$sid"
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uci_set_state radvd "$ifsection" "" interface
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uci_set_state radvd "$ifsection" interface "$lanif"
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}
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uci_set_state radvd "$ifsection" ignore 0
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uci_set_state radvd "$ifsection" IgnoreIfMissing 1
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uci_set_state radvd "$ifsection" AdvSendAdvert 1
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uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
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}
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set_6to4_radvd_prefix() {
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local cfgid="$1"
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local lanif="${2:-lan}"
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local wanif="${3:-wan}"
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local prefix="${4:-0:0:0:1::/64}"
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local pfxsection=""
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find_pfxsection() {
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local net base
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local cfg="$1"
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config_get net "$cfg" interface
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config_get base "$cfg" Base6to4Interface
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[ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
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pfxsection="$cfg"
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return 1
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}
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}
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config_foreach find_pfxsection prefix
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[ -z "$pfxsection" ] && {
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pfxsection="prefix_${sid}_${lanif}"
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uci_set_state radvd "$pfxsection" "" prefix
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uci_set_state radvd "$pfxsection" ignore 0
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uci_set_state radvd "$pfxsection" interface "$lanif"
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uci_set_state radvd "$pfxsection" prefix "$prefix"
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uci_set_state radvd "$pfxsection" AdvOnLink 1
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uci_set_state radvd "$pfxsection" AdvAutonomous 1
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uci_set_state radvd "$pfxsection" AdvValidLifetime 300
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uci_set_state radvd "$pfxsection" AdvPreferredLifetime 120
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uci_set_state radvd "$pfxsection" Base6to4Interface "$wanif"
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}
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}
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# Hook into scan_interfaces() to synthesize a .device option
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# This is needed for /sbin/ifup to properly dispatch control
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# to setup_interface_6to4() even if no .ifname is set in
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@ -98,49 +164,44 @@ setup_interface_6to4() {
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uci_set_state network "$cfg" defaultroute 1
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}
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[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
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local sid="6to4_$cfg"
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uci_revert_state radvd
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config_load radvd
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# find delegation target
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local adv_interface
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config_get adv_interface "$cfg" adv_interface
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local adv_subnet=$(uci_get network "$cfg" adv_subnet)
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adv_subnet=$((0x${adv_subnet:-1}))
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local adv_subnets=""
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for adv_interface in ${adv_interface:-lan}; do
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local adv_ifname
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config_get adv_ifname "${adv_interface:-lan}" ifname
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local adv_subnet=$(uci_get network "$cfg" adv_subnet)
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grep -qs "^ *$adv_ifname:" /proc/net/dev && {
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local subnet6="$prefix6:${adv_subnet:-1}::1/64"
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local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
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logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
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ip -6 addr add $subnet6 dev $adv_ifname
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uci_set_state network "$cfg" adv_subnet "$subnet6"
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uci_set_state network "$cfg" adv_ifname "$adv_ifname"
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[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
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local sid="6to4_$cfg"
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set_6to4_radvd_interface "$sid" "$adv_interface"
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set_6to4_radvd_prefix "$sid" "$adv_interface" \
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"$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)"
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uci -q batch <<-EOF
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revert radvd.iface_$sid
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revert radvd.prefix_$sid
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set radvd.iface_$sid=interface
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set radvd.iface_$sid.ignore=0
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set radvd.iface_$sid.interface=${adv_interface:-lan}
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set radvd.iface_$sid.IgnoreIfMissing=1
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set radvd.iface_$sid.AdvSendAdvert=1
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set radvd.iface_$sid.MaxRtrAdvInterval=30
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set radvd.prefix_$sid=prefix
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set radvd.prefix_$sid.ignore=0
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set radvd.prefix_$sid.interface=${adv_interface:-lan}
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set radvd.prefix_$sid.prefix=0:0:0:${adv_subnet:-1}::/64
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set radvd.prefix_$sid.AdvOnLink=1
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set radvd.prefix_$sid.AdvAutonomous=1
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set radvd.prefix_$sid.AdvValidLifetime=300
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set radvd.prefix_$sid.AdvPreferredLifetime=120
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set radvd.prefix_$sid.Base6to4Interface=$wancfg
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EOF
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adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
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adv_subnet=$(($adv_subnet + 1))
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}
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done
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uci_set_state network "$cfg" adv_subnets "$adv_subnets"
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/etc/init.d/radvd restart
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}
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}
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logger -t "$link" "... started"
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@ -157,24 +218,24 @@ stop_interface_6to4() {
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local local6=$(uci_get_state network "$cfg" ip6addr)
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local defaultroute=$(uci_get_state network "$cfg" defaultroute)
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local adv_subnet=$(uci_get_state network "$cfg" adv_subnet)
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local adv_ifname=$(uci_get_state network "$cfg" adv_ifname)
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local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
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grep -qs "^ *$link:" /proc/net/dev && {
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logger -t "$link" "Shutting down ..."
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env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6to4 /sbin/hotplug-call "iface" &
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[ -n "$adv_subnet" ] && [ -n "$adv_ifname" ] && {
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local sid="6to4_$cfg"
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uci -q batch <<-EOF
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revert radvd.iface_$sid
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revert radvd.prefix_$sid
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EOF
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[ -n "$adv_subnets" ] && {
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uci_revert_state radvd
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/etc/init.d/radvd enabled && /etc/init.d/radvd restart
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ip -6 addr del $adv_subnet dev $adv_ifname
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local adv_subnet
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for adv_subnet in $adv_subnets; do
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local ifname="${adv_subnet%%:*}"
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local subnet="${adv_subnet#*:}"
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logger -t "$link" " * Removing IPv6 subnet $subnet from interface $ifname"
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ip -6 addr del $subnet dev $ifname
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done
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}
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[ "$defaultroute" = "1" ] && {
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