Wei Liu b103f358d9
xen-netback: enable user to unload netback module ...
This patch enables user to unload netback module, which is useful when user
wants to upgrade to a newer netback module without rebooting the host.
Netfront cannot handle netback removal event. As we cannot fix all possible
frontends we add module get / put along with vif get / put to avoid
mis-unloading of netback. To unload netback module, user needs to shutdown all
VMs or migrate them to another host or unplug all vifs before hand.
Signed-off-by: Wei Liu <wei.liu2@citrix.com >
Acked-by: Ian Campbell <ian.campbell@citrix.com >¬
Signed-off-by: David S. Miller <davem@davemloft.net >
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b103f358d9