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| author | Wei Liu <wei.liu2@citrix.com> | 2013-05-17 01:26:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-18 03:23:07 +0200 |
| commit | b103f358d9f6f58658f1a6dc08912ab921dd86f1 (patch) | |
| tree | 5f35cbec030e789a1261676f579cb1b57b236021 /drivers/net/xen-netback/xenbus.c | |
| parent | xen-netback: remove dead code (diff) | |
| download | linux-b103f358d9f6f58658f1a6dc08912ab921dd86f1.tar.xz linux-b103f358d9f6f58658f1a6dc08912ab921dd86f1.zip | |
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>
Diffstat (limited to 'drivers/net/xen-netback/xenbus.c')
| -rw-r--r-- | drivers/net/xen-netback/xenbus.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index 410018c4c528..d230c145660c 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -485,3 +485,8 @@ int xenvif_xenbus_init(void) { return xenbus_register_backend(&netback_driver); } + +void xenvif_xenbus_fini(void) +{ + return xenbus_unregister_driver(&netback_driver); +} |