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Re: [Xen-devel] Q on ioctl support in netfront/netback
- To: Paul Durrant <paul.durrant@xxxxxxxxxx>
- From: ravi kerur <rkerur@xxxxxxxxx>
- Date: Mon, 15 Feb 2010 07:54:02 -0800
- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 15 Feb 2010 07:54:52 -0800
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Paul,
Registers are not in netback, they are h/w registers on NIC and the driver supports reads/writes via ioctl calls. Driver is in dom0 and application which reads/writes registers is run in domU.
-RK
On Mon, Feb 15, 2010 at 1:40 AM, Paul Durrant <paul.durrant@xxxxxxxxxx> wrote:
ravi kerur wrote:
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.
--
===============================
Paul Durrant, Software Engineer
Citrix Systems (R&D) Ltd.
First Floor, Building 101
Cambridge Science Park
Milton Road
Cambridge CB4 0FY
United Kingdom
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