I had seen that archive thread but since we're running 2.6.31 it already has the patches listed for 2.6.28-rc5. I didn't have a USB 1.1 hub handy so I tried a USB 2.0 hub and it worked! Complicating the USB chain solves the problem, go figure. This will be good enough for our purposes so I'm not going to spend more time trying to debug WinXP ;-) All I can assume is Windows doesn't allow speed translation unless a second hub is present (there is an onboard USB 2.0 hub on the system I'm testing with)? Thanks to Xiaofan, Michal for the suggestions and everyone for taking the time to read this thread. Marc -----Original Message----- From: Xiaofan Chen [mailto:xiaofanc@xxxxxxxxx] Sent: May 2, 2011 11:24 PM To: Marc St-Jean Cc: linux-usb@xxxxxxxxxxxxxxx; Michal Nazarewicz Subject: Re: State of g_ether/RNDIS? 2011/4/29 Marc St-Jean <Marc.St-Jean@xxxxxxxxxx>: > I got my hands on a WinCE 6.0 based device and the > g_ether/RNDIS appears to run correctly with it. > > Trying to track down what is going on with Win XP SP3, > I captured some kernel logs (left some "fsl_ep_enable" output in > there in case it's of any help). In both cases, the target board > was freshly booted, the usb0 device ifconfig'd and a DHCP > server started. > > With WinCE there are fewer exchanges before "init rndis" > and "rndis open" appear. That's followed by "rndis_set_param_dev:", > "rndis req21.00 v0000 i0000 l24", "rndis_msg_parser: > REMOTE_NDIS_INITIALIZE_MSG" and many others. > > With WinXP there is a longer exchange before "init rndis" > and "rndis open" appear. Then "rndis_set_param_dev:", > "rndis req21.00 v0000 i0000 l24" are followed > by "g_ether gadget: suspend". > > It seems like WinXP doesn't like that "rndis req21.00 v0000 i0000 l24" > and fails to reply so linux g_ether/RNDIS times out 5 seconds later. > > Anyone familiar with RNDIS protocol have ideas of what may > be happening here? I know next to nothing of RNDIS and Gadget drivers, but Google found this one. What if you use a full speed port on the Windows XP SP3 machine (eg: you can add a USB 1.1 hub in between the device and the Windows host port). http://kerneltrap.com/mailarchive/linux-usb/2008/11/16/4133254/thread -- Xiaofan -- 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
