+--- Get wireless information for given interface.
+-- @param ifname String containing the interface name
+-- @return A wrapped iwinfo object instance
+function wifi.getiwinfo(ifname)
+ local stat, iwinfo = pcall(require, "iwinfo")
+
+ if ifname then
+ local c = 0
+ local u = uci.cursor_state()
+ local d, n = ifname:match("^(%w+)%.network(%d+)")
+ if d and n then
+ n = tonumber(n)
+ u:foreach("wireless", "wifi-iface",
+ function(s)
+ if s.device == d then
+ c = c + 1
+ if c == n then
+ ifname = s.ifname or s.device
+ return false
+ end
+ end
+ end)
+ elseif u:get("wireless", ifname) == "wifi-device" then
+ u:foreach("wireless", "wifi-iface",
+ function(s)
+ if s.device == ifname and s.ifname then
+ ifname = s.ifname
+ return false
+ end
+ end)
+ end
+
+ local t = stat and iwinfo.type(ifname)
+ local x = t and iwinfo[t] or { }
+ return setmetatable({}, {
+ __index = function(t, k)
+ if k == "ifname" then
+ return ifname
+ elseif x[k] then
+ return x[k](ifname)
+ end
+ end
+ })
+ end
+end
+