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| author | Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> | 2022-02-22 03:18:16 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-02-24 19:58:37 +0300 |
| commit | 0f4558ae91870692ce7f509c31c9d6ee721d8cdc (patch) | |
| tree | fa3ee24888963e5d6560957085abb8bf4308e9ce | |
| parent | 5facf49702b6d994d3f1c72cffa0e83f3858ee19 (diff) | |
| download | linux-0f4558ae91870692ce7f509c31c9d6ee721d8cdc.tar.xz | |
Revert "xen-netback: remove 'hotplug-status' once it has served its purpose"
This reverts commit 1f2565780e9b7218cf92c7630130e82dcc0fe9c2.
The 'hotplug-status' node should not be removed as long as the vif
device remains configured. Otherwise the xen-netback would wait for
re-running the network script even if it was already called (in case of
the frontent re-connecting). But also, it _should_ be removed when the
vif device is destroyed (for example when unbinding the driver) -
otherwise hotplug script would not configure the device whenever it
re-appear.
Moving removal of the 'hotplug-status' node was a workaround for nothing
calling network script after xen-netback module is reloaded. But when
vif interface is re-created (on xen-netback unbind/bind for example),
the script should be called, regardless of who does that - currently
this case is not handled by the toolstack, and requires manual
script call. Keeping hotplug-status=connected to skip the call is wrong
and leads to not configured interface.
More discussion at
https://lore.kernel.org/xen-devel/afedd7cb-a291-e773-8b0d-4db9b291fa98@ipxe.org/T/#u
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Link: https://lore.kernel.org/r/20220222001817.2264967-1-marmarek@invisiblethingslab.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/xen-netback/xenbus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index d24b7a7993aa..3fad58d22155 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -256,6 +256,7 @@ static void backend_disconnect(struct backend_info *be) unsigned int queue_index; xen_unregister_watchers(vif); + xenbus_rm(XBT_NIL, be->dev->nodename, "hotplug-status"); #ifdef CONFIG_DEBUG_FS xenvif_debugfs_delif(vif); #endif /* CONFIG_DEBUG_FS */ @@ -675,7 +676,6 @@ static void hotplug_status_changed(struct xenbus_watch *watch, /* Not interested in this watch anymore. */ unregister_hotplug_status_watch(be); - xenbus_rm(XBT_NIL, be->dev->nodename, "hotplug-status"); } kfree(str); } |