netusb: RNDIS host support

[Jeepgoing]

Hi, i am testing Zephyr connect to Android Phone with Type-C, i found Android Phone only supports RNDIS Device mode, so it that mean Zephyr device should support RNDIS Host?

I also tried ECM mode, but Zephyr can't run DHCP Server, so Android Phone doesn't have IP

[tuobaye1988]

Hi， I have same question

[carlescufi]

@Jeepgoing Zephyr only supports the USB Device role, not USB Host.

[Jeepgoing]

@carlescufi @finikorg I think RNDIS have Host and Decice itself , is it possible RNDIS host run on USB device?

[finikorg]

@Jeepgoing Do you have Android phone with OTG?

[Jeepgoing]

yes @finikorg It's have OTG function

[finikorg]

yes @finikorg It's have OTG function

Then Zephyr is USB device and RNDIS should work

[Jeepgoing]

@finikorg But Android phone need DHCP by Zephyr, I can't find DHCP server support

[jukkar]

If Zephyr is compiled with auto IPv4 support CONFIG_NET_IPV4_AUTO=y, the system should start using 169.254.xxx.xxx addresses so there should be no need for DHCP server support.

[Jeepgoing]

@jukkar you mean Zephyr Device and Android Phone all use default IP?

[jukkar]

you mean Zephyr Device and Android Phone all use default IP?

No, I mean that if devices are configured to use auto IPv4 addresses, then they will select suitable IPv4 addresses from 169.254/16 block in order to communicate with each other. Linux typically has this support automatically enabled but in zephyr you need to manually enable this.

[finikorg]

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