[OpenWrt-Devel] [PATCH] dnsmasq: add dhcp relay option

[dbugnar]

Signed-off-by: dbugnar <dnbugnar at ocedo.com>
---
 package/network/services/dnsmasq/files/dhcp.conf    |  6 ++++++
 package/network/services/dnsmasq/files/dnsmasq.init | 19 +++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/package/network/services/dnsmasq/files/dhcp.conf b/package/network/services/dnsmasq/files/dhcp.conf
index 362b90a..7a66b44 100644
--- a/package/network/services/dnsmasq/files/dhcp.conf
+++ b/package/network/services/dnsmasq/files/dhcp.conf
@@ -30,3 +30,9 @@ config dhcp lan
 config dhcp wan
 	option interface	wan
 	option ignore	1
+
+config relay
+	option local_addr	'192.168.1.1'
+	option server_addr	'0.0.0.0'
+	option interface	'eth0'
+
diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index 3ef2b3d..ac45d1b 100644
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -538,6 +538,24 @@ dhcp_hostrecord_add() {
 	xappend "--host-record=$record"
 }
 
+dhcp_relay_add() {
+	local cfg="$1"
+	local local_addr server_addr interface
+
+	config_get local_addr "$cfg" local_addr
+	[ -n "$local_addr" ] || return 0
+
+	config_get server_addr "$cfg" server_addr
+	[ -n "$server_addr" ] || return 0
+
+	config_get interface "$cfg" interface
+	if [ -z "$interface" ]; then
+		xappend "--dhcp-relay=$local_addr,$server_addr"
+	else
+		xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
+	fi
+}
+
 service_triggers()
 {
 	procd_add_reload_trigger "dhcp"
@@ -597,6 +615,7 @@ start_service() {
 	config_foreach dhcp_subscrid_add subscrid
 	config_foreach dhcp_domain_add domain
 	config_foreach dhcp_hostrecord_add hostrecord
+	config_foreach dhcp_relay_add relay
 
 	# add own hostname
 	local lanaddr
-- 
2.1.4
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