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Commit ddb72244 authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
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Documentation: usb: RNDIS function testing 



Summary of how to test RNDIS function of USB gadget.

Signed-off-by: default avatarAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent da2907d2

Documentation/usb/gadget-testing.txt

+36 −0
Original line number Original line Diff line number Diff line
@@ -13,6 +13,7 @@ provided by gadgets. 
10. NCM function

10. NCM function

11. OBEX function

11. OBEX function

12. PHONET function

12. PHONET function

13. RNDIS function









1. ACM function

1. ACM function
@@ -493,3 +494,38 @@ $ ./pnxmit -a 0x10 -r 
On the device:

On the device:





$ ./pnxmit -a 0x6c -s 0x10

$ ./pnxmit -a 0x6c -s 0x10



13. RNDIS function

==================



The function is provided by usb_f_rndis.ko module.



Function-specific configfs interface

------------------------------------



The function name to use when creating the function directory is "rndis".

The RNDIS function provides these attributes in its function directory:



	ifname		- network device interface name associated with this

			function instance

	qmult		- queue length multiplier for high and super speed

	host_addr	- MAC address of host's end of this

			Ethernet over USB link

	dev_addr	- MAC address of device's end of this

			Ethernet over USB link



and after creating the functions/rndis.<instance name> they contain default

values: qmult is 5, dev_addr and host_addr are randomly selected.

Except for ifname they can be written to until the function is linked to a

configuration. The ifname is read-only and contains the name of the interface

which was assigned by the net core, e. g. usb0.



By default there can be only 1 RNDIS interface in the system.



Testing the RNDIS function

--------------------------



Configure IP addresses of the device and the host. Then:



On the device: ping <host's IP>

On the host: ping <device's IP>