add trelay, a trivial ethernet relay which allows pseudo-bridging ad-hoc or client mode devices over vlans to other hosts

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31122 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 41 insertions, 0 deletions

diff --git a/package/trelay/files/trelay.config b/package/trelay/files/trelay.config
new file mode 100644
index 000000000..eb0501305
--- /dev/null
+++ b/package/trelay/files/trelay.config
@@ -0,0 +1,4 @@
+config trelay
+	option enabled	0
+	option dev1	eth0
+	option dev2	wlan0
diff --git a/package/trelay/files/trelay.hotplug b/package/trelay/files/trelay.hotplug
new file mode 100644
index 000000000..31f737840
--- /dev/null
+++ b/package/trelay/files/trelay.hotplug
@@ -0,0 +1,5 @@
+case "$ACTION" in
+	add|register)
+		[ -f /var/run/trelay.active ] && /etc/init.d/trelay start
+	;;
+esac
diff --git a/package/trelay/files/trelay.init b/package/trelay/files/trelay.init
new file mode 100644
index 000000000..c812e12c6
--- /dev/null
+++ b/package/trelay/files/trelay.init
@@ -0,0 +1,32 @@
+#!/bin/sh /etc/rc.common
+START=80
+
+check_relay() {
+	local cfg="$1"
+
+	config_get_bool enabled "$cfg" enabled 1
+	[ "$enabled" -gt 0 ] || return
+
+	config_get dev1 "$cfg" dev1
+	config_get dev2 "$cfg" dev2
+
+	[ -d "/sys/kernel/debug/trelay/${dev1}-${dev2}" ] && return
+	[ -d "/sys/class/net/${dev1}" -a -d "/sys/class/net/${dev2}" ] || return
+
+	ifconfig "$dev1" up
+	ifconfig "$dev2" up
+	echo "${dev1}-${dev2},${dev1},${dev2}" > /sys/kernel/debug/trelay/add
+}
+
+start() {
+	config_load trelay
+	config_foreach check_relay trelay
+	touch /var/run/trelay.active
+}
+
+stop() {
+	rm -f /var/run/trelay.active
+	for relay in /sys/kernel/debug/trelay/*; do
+		[ -d "$relay" ] && echo > "$relay/remove"
+	done
+}