6in4: add netifd support

[openwrt/openwrt.git] / package / 6in4 / files.old / 6in4.sh

diff --git a/package/6in4/files.old/6in4.sh b/package/6in4/files.old/6in4.sh
new file mode 100755 (executable)
index 0000000..5f8dfff
--- /dev/null
+++ b/package/6in4/files.old/6in4.sh
@@ -0,0 +1,104 @@
+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010 OpenWrt.org
+
+find_6in4_wanif() {
+       local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}"
+       [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
+}
+
+find_6in4_wanip() {
+       local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }"
+       echo "${ip%%[^0-9.]*}"
+}
+
+# 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=$(uci_get network "$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 metric
+       config_get metric "$cfg" metric
+
+       local defaultroute
+       config_get_bool defaultroute "$cfg" defaultroute 1
+
+       # If local4 is unset, guess local IPv4 address from the
+       # interface used by the default route.
+       [ -z "$local4" ] && {
+               local wanif=$(find_6in4_wanif)
+               [ -n "$wanif" ] && {
+                       local4=$(find_6in4_wanip "$wanif")
+                       uci_set_state network "$cfg" wan_device "$wanif"
+               }
+       }
+
+       [ -n "$local4" ] && {
+               # 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 ${ttl:-64}
+               ip link set $link up
+               ip link set mtu ${mtu:-1280} dev $link
+               ip addr add $local6 dev $link
+
+               uci_set_state network "$cfg" ipaddr $local4
+               uci_set_state network "$cfg" ip6addr $local6
+
+               [ "$defaultroute" = 1 ] && {
+                       ip -6 route add ::/0 ${metric:+metric $metric} dev $link
+                       uci_set_state network "$cfg" defaultroute 1
+               }
+
+               env -i ACTION="ifup" INTERFACE="$cfg" DEVICE="$link" PROTO=6in4 /sbin/hotplug-call "iface" &
+       } || {
+               echo "Cannot determine local IPv4 address for 6in4 tunnel $cfg - skipping"
+       }
+}
+
+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
+       }
+}