luci-mod-network: invalid wireless modes are listed on the config page

With many of the newer routers, adhoc mode is not supported in the 5Ghz devices. Configuring the device with an invalid mode naturally doesn’t work.

For example, on a ubnt-unifiac-mesh:

When running iw phy ph0 info on the ubnt-unifiac-mesh the following results are shown:

	valid interface combinations:
		 * #{ AP, mesh point } <= 8, #{ managed } <= 1,
		   total <= 8, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }

It would be good to have LuCI provide options which will actually work.

[Ansuel]

@feckert @jow- why this is not fixed? i mean shouldn’t be that hard to get the supported modes and report a correct list

[jow-]

Lack of time and low severity