Zephyr USB-RNDIS

[99003662]

HI team,
I am following the below link to run the usb- rndis example. I have modified the conf according to the link . however it is not working . it is not detecting the usb driver itself( i.e in network adaptor it should detect that remote ndis compatible device). [ https://github.com//issues/44573 ]. Do we have any direct example to test this functionality.

Can you please help me to figure it out.

Note - Am using windows system , board - STM32 board.

[enthunilu]

Hello @99003662

I also faced the same issue.

Please try this at your end if it works,
I tried to change rndis_cfg structure available in the below code
https://github.com/zephyrproject-rtos/zephyr/blob/main/subsys/usb/device/class/netusb/function_rndis.c

as

USBD_CLASS_DESCR_DEFINE(primary, 0) struct usb_rndis_config rndis_cfg = { .iad = { .bLength = sizeof(struct usb_association_descriptor), .bDescriptorType = USB_DESC_INTERFACE_ASSOC, .bFirstInterface = 0, .bInterfaceCount = 0x02, .bFunctionClass = 0xEF, //USB_BCC_CDC_CONTROL, .bFunctionSubClass = 4, //6, .bFunctionProtocol = 1, //0, .iFunction = 0, }, /* Interface descriptor 0 */ /* CDC Communication interface */ .if0 = { .bLength = sizeof(struct usb_if_descriptor), .bDescriptorType = USB_DESC_INTERFACE, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 1, .bInterfaceClass = 0xEF, //USB_BCC_CDC_CONTROL .bInterfaceSubClass = 4, // ACM_SUBCLASS, .bInterfaceProtocol = 1, // ACM_VENDOR_PROTOCOL .iInterface = 0, },

with above change i tried to use below example and I am able to see device getting detected as RNDIS device
[https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/net/zperf]

However, functionality is still not working. So, I am looking at it. Can you also try the same at your end ?

One more thing device is not getting detected for
https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/net/sockets/dumb_http_server

as mentioned in https://github.com/zephyrproject-rtos/zephyr/issues/44573

For this you need to enable USB, something like below code along with existing ethernet code. Unless we enable usb, device will not be shown

ret = usb_enable(NULL); if (ret != 0) { printk("usb enable error %d\n", ret); } (void)net_config_init_app(NULL, "Initializing network");

[finikorg]

There is a possibility to use USB OS Descriptors like described here: https://static.sched.com/hosted_files/osseu19/6a/WYOG-eng-v15.pdf