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Re: [Xen-devel] Network questions

from [Xiaofang Chen]

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Subject:	Re: [Xen-devel] Network questions
From:	"Xiaofang Chen" <xiachen@xxxxxxxxxxx>
Date:	Tue, 29 Jun 2004 15:47:32 -0600
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Xiaofang

----- Original Message -----

From: Xiaofang Chen

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx

Sent: Monday, June 28, 2004 9:50 PM

Subject: [Xen-devel] Network questions

Hi,

Can someone tell me what is the functionality of "backend" in XenoLinux?

Take the network for example, it seems that all the virtual network interfaces corresponding to

guest OS's are created in Xen. And on the receiving side, interrupt VIRQ_NET is raised from

Xen upward to XenoLinux. However, it seems that this kind of interrupts are not processed by

"backend".

So what does "backend" do for networking? For example, functions like 'netif_ctrlif_rx()',

'net_rx_action()', 'netif_be_start_xmit()', etc.

Thanks!

Xiaofang

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