Concurrent mode shares the Wi-Fi interface between multiple functionalities — for example station, access point, and Wi-Fi Direct — using different virtual interfaces for each. By default, Digi Embedded Yocto configures the Wi-Fi interface in client infrastructure mode. Refer to Access point mode or Wi-Fi Direct to enable that interface.
Maximum performance is achieved on the physical wlan0 when the Wi-Fi interface is not shared between multiple functionalities.
Digi recommends you always use the physical wlan0 interface and only configure virtual interfaces when using concurrent modes.
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Digi programs one MAC address for the Wi-Fi interface during manufacturing of the SOM.
This is the MAC address used for the wlan0 interface.
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Inspecting valid combinations
To determine the supported modes and combinations (STA, AP, P2P, AP+P2P, etc), run the iw phy
command.
# iw phy
.....
valid interface combinations:
* #{ managed, AP, monitor, P2P-client, P2P-GO } <= 4,
total <= 4, #channels <= 1
* #{ managed } <= 2, #{ P2P-device } <= 1, #{ P2P-client, P2P-GO } <= 1,
total <= 3, #channels <= 2
In this generic example:
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Combination 1 can work simultaneously with up to four interfaces as STA, AP or P2P; additionally, those interfaces are restricted to work in the same channel.
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Combination 2 can work simultaneously with up to two STA interfaces plus one P2P interface, and they can work in different channels.