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authorJo-Philipp Wich <jow@openwrt.org>2010-05-28 00:27:01 +0000
committerJo-Philipp Wich <jow@openwrt.org>2010-05-28 00:27:01 +0000
commit278589f5d70dbe790d31cb5015d3723daa739941 (patch)
treef1cc5467c645c08bb5d6401b3819452bfee79065 /package/6in4/files/6in4.sh
parentc0820d3261a81a19c99e9c2a0b4595a5f6465e37 (diff)
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add 6in4 - support for static IPv6-in-IPv4 tunnels through /etc/config/network
SVN-Revision: 21589
Diffstat (limited to 'package/6in4/files/6in4.sh')
-rwxr-xr-xpackage/6in4/files/6in4.sh79
1 files changed, 79 insertions, 0 deletions
diff --git a/package/6in4/files/6in4.sh b/package/6in4/files/6in4.sh
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+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010 OpenWrt.org
+
+# Hook into scan_interfaces() to synthesize a .device option
+# This is needed for /sbin/ifup to properly dispatch control
+# to setup_interface_6in4() even if no .ifname is set in
+# the configuration.
+scan_6in4() {
+ config_set "$1" device "6in4-$1"
+}
+
+coldplug_interface_6in4() {
+ setup_interface_6in4 "6in4-$1" "$1"
+}
+
+setup_interface_6in4() {
+ local iface="$1"
+ local cfg="$2"
+ local link="6in4-$cfg"
+
+ local local4
+ config_get local4 "$cfg" ipaddr
+
+ local remote4
+ config_get remote4 "$cfg" peeraddr
+
+ local local6
+ config_get local6 "$cfg" ip6addr
+
+ local mtu
+ config_get mtu "$cfg" mtu
+
+ local ttl
+ config_get ttl "$cfg" ttl
+
+ local defaultroute
+ config_get_bool defaultroute "$cfg" defaultroute 1
+
+
+ # 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
+
+ ip tunnel add $link mode sit remote $remote4 local $local4 ttl 255
+ ip link set $link up
+ ip link set mtu ${mtu:-1280} dev $link
+ ip tunnel change $link ttl ${ttl:-64}
+ ip addr add $local6 dev $link
+
+ uci_set_state network "$cfg" ip6addr $local6
+
+ [ "$defaultroute" = 1 ] && {
+ ip -6 route add ::/0 dev $link
+ uci_set_state network "$cfg" defaultroute 1
+ }
+
+ env -i ACTION="ifup" INTERFACE="$cfg" DEVICE="$link" PROTO=6in4 /sbin/hotplug-call "iface" &
+}
+
+stop_interface_6in4() {
+ local cfg="$1"
+ local link="6in4-$cfg"
+
+ local local6=$(uci_get_state network "$cfg" ip6addr)
+ local defaultroute=$(uci_get_state network "$cfg" defaultroute)
+
+ grep -qs "^ *$link:" /proc/net/dev && {
+ env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6in4 /sbin/hotplug-call "iface" &
+
+ [ "$defaultroute" = "1" ] && {
+ ip -6 route del ::/0 dev $link
+ }
+
+ ip addr del $local6 dev $link
+ ip link set $link down
+ ip tunnel del $link
+ }
+}