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[Xen-devel] Network questions

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



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