The existing code moves VF to the same namespace as the synthetic device
during netvsc_register_vf(). But, if the synthetic device is moved to a
new namespace after the VF registration, the VF won't be moved together.
To make the behavior more consistent, add a namespace check to netvsc_open(),
and move the VF if it is not in the same namespace.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: c0a41b887ce6 ("hv_netvsc: move VF to same namespace as netvsc device")
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
drivers/net/hyperv/netvsc_drv.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 153b97f8ec0d..9caade092524 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -134,6 +134,19 @@ static int netvsc_open(struct net_device *net)
}
if (vf_netdev) {
+ if (!net_eq(dev_net(net), dev_net(vf_netdev))) {
+ ret = dev_change_net_namespace(vf_netdev, dev_net(net),
+ "eth%d");
+ if (ret)
+ netdev_err(vf_netdev,
+ "Cannot move to same namespace as %s: %d\n",
+ net->name, ret);
+ else
+ netdev_info(vf_netdev,
+ "Moved VF to namespace with: %s\n",
+ net->name);
+ }
+
/* Setting synthetic device up transparently sets
* slave as up. If open fails, then slave will be
* still be offline (and not used).
--
2.34.1
