gluon-mesh-batman-adv: move wireless hop_penalty handling from gluon-core

The batadv_hop_penalty option for wireless mesh interfaces was read in
gluon-core's 200-wireless, mixing the batman-adv-specific option name
into the generic wireless configurator. Move the read into a new
gluon-mesh-batman-adv upgrade script (305) that runs after 200-wireless
has created the mesh_<radio> network interfaces.

Behavior is preserved: when gluon.band_X.batadv_hop_penalty is set,
hop_penalty is applied to network.mesh_<radio>; when unset, it is left
absent and gluon_bat0.sh defaults it to 0 at runtime (same as the
previous 'or 0' fallback in 200-wireless).

Also document the wireless band-scoped hop_penalty in
gluon-mesh-batman-adv.rst alongside the existing wired/VPN variants.

Author: rotanid

docs/package/gluon-mesh-batman-adv.rst

@@ -197,6 +197,8 @@ Examples of this are shown below:
   uci set gluon.iface_lan.batadv_hop_penalty=10
   # optional for mesh on wan
   uci set gluon.iface_wan.batadv_hop_penalty=10
+  # optional penalty for wireless mesh per band
+  uci set gluon.band_5g.batadv_hop_penalty=10
   # don't forget to commit changes
   uci commit gluon
 

package/gluon-core/luasrc/lib/gluon/upgrade/200-wireless

@@ -134,11 +134,8 @@ local function configure_mesh(radio, index, mesh_config)
 		return
 	end
 
-	local batadv_hop_penalty = uci:get('gluon', 'band_' .. radio.band, 'batadv_hop_penalty') or 0
-
 	uci:section('network', 'interface', name, {
 		proto = 'gluon_mesh',
-		hop_penalty = batadv_hop_penalty,
 	})
 
 	uci:section('wireless', 'wifi-iface', name, {

package/gluon-mesh-batman-adv/luasrc/lib/gluon/upgrade/305-gluon-mesh-batman-adv-hop-penalty

@@ -0,0 +1,21 @@
+#!/usr/bin/lua
+
+local wireless = require 'gluon.wireless'
+
+local uci = require('simple-uci').cursor()
+
+
+wireless.foreach_radio(uci, function(radio)
+	local name = 'mesh_' .. radio['.name']
+
+	if not uci:get('network', name) then
+		return
+	end
+
+	local hop_penalty = uci:get('gluon', 'band_' .. radio.band, 'batadv_hop_penalty')
+	if hop_penalty ~= nil then
+		uci:set('network', name, 'hop_penalty', hop_penalty)
+	end
+end)
+
+uci:save('network')