[Xen-devel] Q on ioctl support in netfront/netback

[ravi kerur <rkerur@xxxxxxxxx>]

Hello!!!

Our network driver support ioctl calls from applications for register reads/writes. I am wondering can ioctl calls be supported from domU to dom0? i.e call flow will be

application invokes ioctl ---> netfront ioctl ----->via xenbus ------> netback ioctl ------> to actual driver in dom0

with the return path in similar fashion. 

Looked at the existing netfront and netback drivers and with my understanding it seems it is not possible. I looked at scsifront and scsiback, assuming storage drivers should be supporting ioctls, didn't see anything related to it. Wanted to know what's the mechanism to support ioctls. Inputs appreciated.

Thanks
-RK 

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