[PATCH 02/17] Documentation: usb: ECM function testing

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Summary of how to test ECM function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
---
 Documentation/usb/gadget-testing.txt | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt
index 2a448f8..7df8785 100644
--- a/Documentation/usb/gadget-testing.txt
+++ b/Documentation/usb/gadget-testing.txt
@@ -2,6 +2,7 @@ This file summarizes information on basic testing of USB functions
 provided by gadgets.
 
 1. ACM function
+2. ECM function
 
 
 1. ACM function
@@ -32,3 +33,36 @@ then the other way round
 
 On the device: cat > /dev/ttyGS<Y>
 On the host: cat /dev/ttyACM<X>
+
+2. ECM function
+===============
+
+The function is provided by usb_f_ecm.ko module.
+
+Function-specific configfs interface
+------------------------------------
+
+The function name to use when creating the function directory is "ecm".
+The ECM 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/ecm.<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.
+
+Testing the ECM 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>
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux