I'm a new users of xen and have two 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.
I'll be very appreciated if someone knows the answer.
Thanks!
