[package] relayd: add uci integration

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25714 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/relayd/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2010 OpenWrt.org
+# Copyright (C) 2010-2011 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -32,6 +32,10 @@ TARGET_CFLAGS += -I$(STAGING_DIR)/usr/include
 define Package/relayd/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/relayd $(1)/usr/sbin/relayd
+	$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
+	$(INSTALL_DATA) ./files/relay.hotplug $(1)/etc/hotplug.d/iface/30-relay
+	$(INSTALL_DIR) $(1)/lib/network
+	$(INSTALL_DATA) ./files/relay.sh $(1)/lib/network/relay.sh
 endef
 
 $(eval $(call BuildPackage,relayd))

package/relayd/files/relay.hotplug

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# Break recursion
+[ "$PROTO" = "relay" ] && exit 0
+
+include /lib/network
+scan_interfaces
+
+restart_relayd() {
+	local cfg="$1"
+	
+	local proto
+	config_get proto "$1" proto
+	[ "$proto" = "relay" ] || return 0
+
+	local net networks
+	config_get networks "$cfg" network
+	for net in $networks; do
+		[ "$net" = "$INTERFACE" ] && {
+			env -i /sbin/ifup "$cfg" &
+			return 0
+		}
+	done
+
+	local ifn ifnames
+	config_get ifnames "$cfg" ifname
+	for ifn in $ifnames; do
+		[ "$ifn" = "$DEVICE" ] && {
+			env -i /sbin/ifup "$cfg" &
+			return 0
+		}
+	done
+}
+
+config_foreach restart_relayd interface
+

package/relayd/files/relay.sh

@@ -0,0 +1,93 @@
+# relay.sh - Abstract relayd protocol backend
+# Copyright (c) 2011 OpenWrt.org
+
+# Hook into scan_interfaces() to synthesize a .device option
+# This is needed for /sbin/ifup to properly dispatch control
+# to setup_interface_relay() even if no .ifname is set in
+# the configuration.
+scan_relay() {
+	config_set "$1" device "relay-$1"
+}
+
+# No coldplugging needed, relayd will be restarted if one of
+# the member interfaces goes up or down
+#coldplug_interface_relay() {
+#	setup_interface_relay "relay-$1" "$1"
+#}
+
+setup_interface_relay() {
+	local iface="$1"
+	local cfg="$2"
+	local link="relay-$cfg"
+
+	local args=""
+	local ifaces=""
+
+	resolve_ifname() {
+		grep -qs "^ *$1:" /proc/net/dev && {
+			append args "-I $1"
+			append ifaces "$1"
+		}
+	}
+
+	resolve_network() {
+		local ifn
+		config_get ifn "$1" ifname
+		resolve_ifname "$ifn"
+	}
+
+	local net networks
+	config_get networks "$cfg" network
+	for net in $networks; do
+		resolve_network "$net"
+	done
+
+	local ifn ifnames
+	config_get ifnames "$cfg" ifname
+	for ifn in $ifnames; do
+		resolve_ifname "$ifn"
+	done
+
+	local gateway
+	config_get gateway "$cfg" gateway
+	[ -n "$gateway" ] && append args "-G $gateway"
+
+	local expiry # = 30
+	config_get expiry "$cfg" expiry
+	[ -n "$expiry" ] && append args "-t $expiry"
+
+	local retry # = 5
+	config_get retry "$cfg" retry
+	[ -n "$retry" ] && append args "-p $retry"
+
+	local table # = 16800
+	config_get table "$cfg" table
+	[ -n "$table" ] && append args "-T $table"
+
+	local fwd_bcast # = 1
+	config_get_bool fwd_bcast "$cfg" forward_bcast 1
+	[ $fwd_bcast -eq 1 ] && append args "-B"
+
+	local fwd_dhcp # = 1
+	config_get_bool fwd_dhcp "$cfg" forward_dhcp 1
+	[ $fwd_dhcp -eq 1 ] && append args "-D"
+
+	start-stop-daemon -b -S -m -p /var/run/$link.pid \
+		-x /usr/sbin/relayd -- $args
+
+	uci_set_state network "$cfg" device "$ifaces"
+
+	env -i ACTION="ifup" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
+		/sbin/hotplug-call iface
+}
+
+stop_interface_relay() {
+	local cfg="$1"
+	local link="relay-$cfg"
+
+	env -i ACTION="ifdown" DEVICE="$link" INTERFACE="$cfg" PROTO="relay" \
+		/sbin/hotplug-call iface
+
+	service_kill relayd "/var/run/$link.pid"
+}
+