On Mon, Feb 20, 2012 at 7:17 PM, summerxyt [off-list ref] wrote:

**
hi,
   I'm not very sure about if I can ask questions about xen here. I have
tow questions.
   The first one is that I'm looking for methods about inter-domain
communication for xen. I know besides network, VMs on the same physical
machine can exchange information by event channel and grant table. But are
these two ways working in kernel mode as part of drivers, or can I directly
use them just like network socket in user mode?   I've tried to google it
but only got something I can't fully understand.
   The second questions is I want to do some extra jobs (like check tcp/ip
header and change some bits) to packages in the virtual network of xen. As
all domUs' packages are passing the back driver of dom0, I want to put this
extra action to network back driver of dom0. But I'm not sure which part of
the source code has the function of receiving packages from front driver. I
think it may be function  xen_netbk_tx_action<http://lxr.free-electrons.com/ident?i=xen_netbk_tx_action>.
I'll be very appreciated if someone knows the answer. Thanks!

------------------------------
summerxyt

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Check the website of xen, they might have something. One which I knew was
xensocket, but I guess you would need to port it to latest xen kernel as it
was not part of it. There may be other mechanisms also.

-Rohan
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