xen-netback: enable user to unload netback module

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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>

...

This commit is contained in:

Wei Liu 2013-05-16 23:26:11 +00:00 • committed by David S. Miller

parent f1db320ec5

commit b103f358d9

4 changed files with 44 additions and 1 deletions

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1

drivers/net/xen-netback/common.h

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19

drivers/net/xen-netback/interface.c

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20

drivers/net/xen-netback/netback.c

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5

drivers/net/xen-netback/xenbus.c

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