Addition to README regarding user space URBs transmission.
Signed-off-by: Nobuo Iwata <[email protected]>
---
tools/usb/usbip/README | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/tools/usb/usbip/README b/tools/usb/usbip/README
index 74f4afb..6b61da5 100644
--- a/tools/usb/usbip/README
+++ b/tools/usb/usbip/README
@@ -98,6 +98,28 @@ Application-side: a machine runs an application software
uses remote USB device.
- Unbind usbip-host.ko from the device.
+[Userspace Transmission]
+
+In usage shown above, once USB devices are imported or exported, USP/IP
drivers send and receive URBs in kernel space. The usbip_ux.ko kernel module
alternates the route to user space by forwarding USBs through USB/IP utilities
(ie. usbip, usbipd, usbipa). When userspace transmission enabled, usbip attach
and connect will continue executing until usbip detach or disconnect is exeuted.
+
+ app:# insmod usbip-core.ko
+ app:# insmod usbip-ux.ko
+ app:# insmod vhci-hcd.ko
+
+ app:# usbipa -D
+
+ dev:# insmod usbip-core.ko
+ dev:# insmod usbip-ux.ko
+ dev:# insmod usbip-host.ko
+
+ dev:# usbip connect --remote <host> --busid <busid>
+ - Continue running.
+ - Until disconnect command is executed in other terminal window.
+
+ dev:# usbip disconnect --remote <host> --busid <busid>
+ - Stops transission, quits connect command and disconnect device.
+
+
[Example]
---------------------------
DEVICE SIDE
--
2.1.0
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