Hi,
While the new lh7_udc driver performs great when plugged into a
Linux host, I found that plugging into WinXP with g_ether doesn't
quite work. On the gadget side I see,
usb0: full speed config #2: 100 mA, Ethernet Gadget, using RNDIS
rndis_msg_parser: unknown RNDIS message 0x00430209 len -1073151486
usb0: rndis_command_complete: rndis parse error -524
On the WinXP side, I ran usbsnoop with,
a) linux-2.6.14, patched lh7a40x_udc driver
b) linux-2.6.16-rc4-ms28, new lh7_udc driver
(I know that's changing 2 things at once, but I didn't see any major
changes in the g_ether/rndis code, and I wasn't up to porting
my lh7a40x_udc hacks to 2.6.16).
In both configs I have,
CONFIG_USB_ETH=m
CONFIG_USB_ETH_RNDIS=y
In both cases, rhe first 4 URB transactions were identical (except for
bcdDevice == [15 02] for new driver, and [09 02] for the old one), but
on the 5th URB (URB_FUNCTION_CLASS_INTERFACE) the response from
lh7_udc has TransferBufferLength == 0, after which USB traffic comes
to a dead stop. With lh7a40x_udc, I see TransferBufferLength == 0x18,
and things roll merrily along.
Log excerpts:
<lh7a40x_udc>
[125 ms] >>> URB 5 going down >>>
-- URB_FUNCTION_CLASS_INTERFACE:
TransferFlags = 00000000 (USBD_TRANSFER_DIRECTION_OUT,
~USBD_SHORT_TRANSFER_OK)
TransferBufferLength = 00000018
TransferBuffer = 84e3c000
TransferBufferMDL = 00000000
00000000: 02 00 00 00 18 00 00 00 01 00 00 00 01 00 00 00
00000010: 00 00 00 00 00 40 00 00
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000000
Value = 00000000
Index = 00000000
[131 ms] UsbSnoop - MyInternalIOCTLCompletion(f799fdb0) : fido=00000000,
Irp=850fd008, Context=850493d0, IRQL=2
[131 ms] <<< URB 5 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 8507d700
TransferFlags = 0000000a (USBD_TRANSFER_DIRECTION_OUT,
USBD_SHORT_TRANSFER_OK)
TransferBufferLength = 00000018
TransferBuffer = 84e3c000
TransferBufferMDL = 86253f88
UrbLink = 00000000
SetupPacket =
00000000: 21 00 00 00 00 00 18 00
[131 ms] UsbSnoop - DispatchAny(f799e610) : IRP_MJ_INTERNAL_DEVICE_CONTROL
[131 ms] UsbSnoop - MyDispatchInternalIOCTL(f799fe80) : fdo=850b3030,
Irp=85bf52e8, IRQL=0
</lh7a40x_udc>
<lh7_udc>
[118 ms] >>> URB 5 going down >>>
-- URB_FUNCTION_CLASS_INTERFACE:
TransferFlags = 00000000 (USBD_TRANSFER_DIRECTION_OUT,
~USBD_SHORT_TRANSFER_OK)
TransferBufferLength = 00000018
TransferBuffer = 85873000
TransferBufferMDL = 00000000
00000000: 02 00 00 00 18 00 00 00 01 00 00 00 01 00 00 00
00000010: 00 00 00 00 00 40 00 00
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000000
Value = 00000000
Index = 00000000
[5165 ms] UsbSnoop - MyInternalIOCTLCompletion(f7927db0) : fido=00000000,
Irp=84ff9008, Context=863c88b0, IRQL=2
[5165 ms] <<< URB 5 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 850048f8
TransferFlags = 0000000a (USBD_TRANSFER_DIRECTION_OUT,
USBD_SHORT_TRANSFER_OK)
TransferBufferLength = 00000000
TransferBuffer = 85873000
TransferBufferMDL = 861a12d8
UrbLink = 00000000
SetupPacket =
00000000: 21 00 00 00 00 00 18 00
[10166 ms] UsbSnoop - DispatchAny(f7926610) : IRP_MJ_PNP (IRP_MN_REMOVE_DEVICE)
[10166 ms] UsbSnoop - MyDispatchPNP(f7928ee0) : IRP_MJ_PNP
(IRP_MN_REMOVE_DEVICE)
[10166 ms] UsbSnoop - RemoveDevice(f7928e90) : fido=8503a108 pdx=8503a1c0
[10167 ms] UsbSnoop - DriverUnload(f7928de0) : DriverObject 8619a318, IRQL=0
[10167 ms] Driver unloaded!
</lh7_udc>
Next I can try turning on TALK in lh7_udc.c, if that might be helpful.
Full usbsnoop logs at,
http://www.bluebutton.com/misc/lh7usb/
-Jamie
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