6to4: support multiple internal networks, use state vars for radvd config

SVN-Revision: 24219
This commit is contained in:
Jo-Philipp Wich 2010-12-02 22:41:03 +00:00
parent 41b3383499
commit 7acaafb61b
2 changed files with 108 additions and 47 deletions

View File

@ -8,7 +8,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=6to4
PKG_VERSION:=2
PKG_VERSION:=3
PKG_RELEASE:=1
include $(INCLUDE_DIR)/package.mk

View File

@ -18,6 +18,72 @@ find_6to4_prefix() {
printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
}
set_6to4_radvd_interface() {
local cfgid="$1"
local lanif="${2:-lan}"
local ifsection=""
find_ifsection() {
local net
local cfg="$1"
config_get net "$cfg" interface
[ "$net" = "$lanif" ] && {
ifsection="$cfg"
return 1
}
}
config_foreach find_ifsection interface
[ -z "$ifsection" ] && {
ifsection="iface_$sid"
uci_set_state radvd "$ifsection" "" interface
uci_set_state radvd "$ifsection" interface "$lanif"
}
uci_set_state radvd "$ifsection" ignore 0
uci_set_state radvd "$ifsection" IgnoreIfMissing 1
uci_set_state radvd "$ifsection" AdvSendAdvert 1
uci_set_state radvd "$ifsection" MaxRtrAdvInterval 30
}
set_6to4_radvd_prefix() {
local cfgid="$1"
local lanif="${2:-lan}"
local wanif="${3:-wan}"
local prefix="${4:-0:0:0:1::/64}"
local pfxsection=""
find_pfxsection() {
local net base
local cfg="$1"
config_get net "$cfg" interface
config_get base "$cfg" Base6to4Interface
[ "$net" = "$lanif" ] && [ "$base" = "$wanif" ] && {
pfxsection="$cfg"
return 1
}
}
config_foreach find_pfxsection prefix
[ -z "$pfxsection" ] && {
pfxsection="prefix_${sid}_${lanif}"
uci_set_state radvd "$pfxsection" "" prefix
uci_set_state radvd "$pfxsection" ignore 0
uci_set_state radvd "$pfxsection" interface "$lanif"
uci_set_state radvd "$pfxsection" prefix "$prefix"
uci_set_state radvd "$pfxsection" AdvOnLink 1
uci_set_state radvd "$pfxsection" AdvAutonomous 1
uci_set_state radvd "$pfxsection" AdvValidLifetime 300
uci_set_state radvd "$pfxsection" AdvPreferredLifetime 120
uci_set_state radvd "$pfxsection" Base6to4Interface "$wanif"
}
}
# Hook into scan_interfaces() to synthesize a .device option
# This is needed for /sbin/ifup to properly dispatch control
# to setup_interface_6to4() even if no .ifname is set in
@ -98,48 +164,43 @@ setup_interface_6to4() {
uci_set_state network "$cfg" defaultroute 1
}
# find delegation target
local adv_interface
config_get adv_interface "$cfg" adv_interface
[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
local sid="6to4_$cfg"
local adv_ifname
config_get adv_ifname "${adv_interface:-lan}" ifname
uci_revert_state radvd
config_load radvd
local adv_subnet=$(uci_get network "$cfg" adv_subnet)
# find delegation target
local adv_interface
config_get adv_interface "$cfg" adv_interface
grep -qs "^ *$adv_ifname:" /proc/net/dev && {
local subnet6="$prefix6:${adv_subnet:-1}::1/64"
local adv_subnet=$(uci_get network "$cfg" adv_subnet)
adv_subnet=$((0x${adv_subnet:-1}))
logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
ip -6 addr add $subnet6 dev $adv_ifname
uci_set_state network "$cfg" adv_subnet "$subnet6"
uci_set_state network "$cfg" adv_ifname "$adv_ifname"
local adv_subnets=""
[ -f /etc/config/radvd ] && /etc/init.d/radvd enabled && {
local sid="6to4_$cfg"
for adv_interface in ${adv_interface:-lan}; do
local adv_ifname
config_get adv_ifname "${adv_interface:-lan}" ifname
uci -q batch <<-EOF
revert radvd.iface_$sid
revert radvd.prefix_$sid
set radvd.iface_$sid=interface
set radvd.iface_$sid.ignore=0
set radvd.iface_$sid.interface=${adv_interface:-lan}
set radvd.iface_$sid.IgnoreIfMissing=1
set radvd.iface_$sid.AdvSendAdvert=1
set radvd.iface_$sid.MaxRtrAdvInterval=30
set radvd.prefix_$sid=prefix
set radvd.prefix_$sid.ignore=0
set radvd.prefix_$sid.interface=${adv_interface:-lan}
set radvd.prefix_$sid.prefix=0:0:0:${adv_subnet:-1}::/64
set radvd.prefix_$sid.AdvOnLink=1
set radvd.prefix_$sid.AdvAutonomous=1
set radvd.prefix_$sid.AdvValidLifetime=300
set radvd.prefix_$sid.AdvPreferredLifetime=120
set radvd.prefix_$sid.Base6to4Interface=$wancfg
EOF
grep -qs "^ *$adv_ifname:" /proc/net/dev && {
local subnet6="$(printf "%s:%x::1/64" "$prefix6" $adv_subnet)"
/etc/init.d/radvd restart
}
logger -t "$link" " * Advertising IPv6 subnet $subnet6 on ${adv_interface:-lan} ($adv_ifname)"
ip -6 addr add $subnet6 dev $adv_ifname
set_6to4_radvd_interface "$sid" "$adv_interface"
set_6to4_radvd_prefix "$sid" "$adv_interface" \
"$wancfg" "$(printf "0:0:0:%x::/64" $adv_subnet)"
adv_subnets="${adv_subnets:+$adv_subnets }$adv_ifname:$subnet6"
adv_subnet=$(($adv_subnet + 1))
}
done
uci_set_state network "$cfg" adv_subnets "$adv_subnets"
/etc/init.d/radvd restart
}
logger -t "$link" "... started"
@ -157,24 +218,24 @@ stop_interface_6to4() {
local local6=$(uci_get_state network "$cfg" ip6addr)
local defaultroute=$(uci_get_state network "$cfg" defaultroute)
local adv_subnet=$(uci_get_state network "$cfg" adv_subnet)
local adv_ifname=$(uci_get_state network "$cfg" adv_ifname)
local adv_subnets=$(uci_get_state network "$cfg" adv_subnets)
grep -qs "^ *$link:" /proc/net/dev && {
logger -t "$link" "Shutting down ..."
env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6to4 /sbin/hotplug-call "iface" &
[ -n "$adv_subnet" ] && [ -n "$adv_ifname" ] && {
local sid="6to4_$cfg"
uci -q batch <<-EOF
revert radvd.iface_$sid
revert radvd.prefix_$sid
EOF
[ -n "$adv_subnets" ] && {
uci_revert_state radvd
/etc/init.d/radvd enabled && /etc/init.d/radvd restart
ip -6 addr del $adv_subnet dev $adv_ifname
local adv_subnet
for adv_subnet in $adv_subnets; do
local ifname="${adv_subnet%%:*}"
local subnet="${adv_subnet#*:}"
logger -t "$link" " * Removing IPv6 subnet $subnet from interface $ifname"
ip -6 addr del $subnet dev $ifname
done
}
[ "$defaultroute" = "1" ] && {