lime-proto-bmx6: introduce bmx6_pref_gw option

Can be used to add priority (x10) to a specific bmx6 Internet gateway

Signed-off-by: Pau Escrich <p4u@dabax.net>

packages/lime-proto-bmx6/src/bmx6.lua

@@ -40,19 +40,20 @@ function bmx6.configure(args)
 	uci:set(bmx6.f, "json", "plugin")
 	uci:set(bmx6.f, "json", "plugin", "bmx6_json.so")
 
-  -- Enable sms plugin
+	-- Enable sms plugin
 	uci:set(bmx6.f, "sms", "plugin")
 	uci:set(bmx6.f, "sms", "plugin", "bmx6_sms.so")
 
 
 	-- Enable tun plugin, DISCLAIMER: this must be positioned before table plugin if used.
---	uci:set(bmx6.f, "ptun", "plugin")
---	uci:set(bmx6.f, "ptun", "plugin", "bmx6_tun.so")
+	--uci:set(bmx6.f, "ptun", "plugin")
+	--uci:set(bmx6.f, "ptun", "plugin", "bmx6_tun.so")
 
 	-- Disable ThrowRules because they are broken in IPv6 with current Linux Kernel
 	uci:set(bmx6.f, "ipVersion", "ipVersion")
 	uci:set(bmx6.f, "ipVersion", "ipVersion", "6")
 
+
 	-- Search for networks in 172.16.0.0/12
 	uci:set(bmx6.f, "nodes", "tunOut")
 	uci:set(bmx6.f, "nodes", "tunOut", "nodes")
@@ -81,6 +82,27 @@ function bmx6.configure(args)
 	uci:set(bmx6.f, "publicv6", "network", "2000::/3")
 	uci:set(bmx6.f, "publicv6", "maxPrefixLen", "64")
 
+	-- Set prefered GW if defined
+	local pref_gw = config.get("network", "bmx6_pref_gw") or nil
+	if pref_gw then
+		uci:set(bmx6.f, "inet4p", "tunOut")
+		uci:set(bmx6.f, "inet4p", "tunOut", "inet4p")
+		uci:set(bmx6.f, "inet4p", "network", "0.0.0.0/0")
+		uci:set(bmx6.f, "inet4p", "maxPrefixLen", "0")
+		uci:set(bmx6.f, "inet4p", "gwName", pref_gw)
+		uci:set(bmx6.f, "inet4p", "rating", "1000")
+
+		uci:set(bmx6.f, "inet6p", "tunOut")
+		uci:set(bmx6.f, "inet6p", "tunOut", "inet6p")
+		uci:set(bmx6.f, "inet6p", "network", "::/0")
+		uci:set(bmx6.f, "inet6p", "maxPrefixLen", "0")
+		uci:set(bmx6.f, "inet6p", "gwName", pref_gw)
+		uci:set(bmx6.f, "inet6p", "rating", "1000")
+	else
+		uci:delete(bmx6.f, "inet4p", "tunOut")
+		uci:delete(bmx6.f, "inet6p", "tunOut")
+	end
+
 	if config.get_bool("network", "bmx6_over_batman") then
 		for _,protoArgs in pairs(config.get("network", "protocols")) do
 			if(utils.split(protoArgs, network.protoParamsSeparator)[1] == "batadv") then bmx6.setup_interface("bat0", args) end

packages/lime-system/files/etc/config/lime-example

@@ -27,6 +27,7 @@ config lime network
 	option main_ipv6_address '2a00:1508:0a%N1:%N200::/64'                  # Parametrizable in the same way as main_ipv4_address. If used, the IP autocompletion will fill maximum the last 24 bits, so specifying an IP autocompletion range bigger than /104 is not useful.
 	option anygw_mac 'aa:aa:aa:%N1:%N2:aa'                                 # Parametrizable with %Nn. Keep in mind that the ebtables rule will use a mask of ff:ff:ff:00:00:00 so br-lan will not forward anything coming in that matches the first 3 bytes of it's own anygw_mac (aa:aa:aa: by default)
 	option bmx6_mtu '1398'                                                 # Set MTU for bmx6 tunnel interfaces
+#	option bmx6_pref_gw 'gw_hostname'                                      # Force bmx6 to use a specific gateway to Internet (hostname must be used as identifier)
 	list protocols adhoc                                                   # List of protocols configured by LiMe, some of these require the relative package "lime-proto-...". Note that if you set here some protocols, you overwrite the *whole* list of protocols set in /etc/config/lime-defaults
 	list protocols lan
 	list protocols anygw