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Documentation: usb: RNDIS function testing 

Summary of how to test RNDIS function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2014-12-16 14:56:37 +01:00 committed by Felipe Balbi
parent da2907d2b0
commit ddb722449c
1 changed files with 36 additions and 0 deletions
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Documentation/usb/gadget-testing.txt
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@ -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>