diff options
| author |   Long Li <longli@microsoft.com> | 2021-01-08 16:53:43 -0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2021-01-12 19:58:36 -0800 |
| commit | 34b06a2eee44d469f2e2c013a83e6dac3aff6411 (patch) | |
| tree | 0fefbcb2583dded9ccb667c4b09894607aa5f103 /drivers/net/hyperv/netvsc_drv.c | |
| parent | hv_netvsc: Wait for completion on request SWITCH_DATA_PATH (diff) | |
| download | linux-dev-34b06a2eee44d469f2e2c013a83e6dac3aff6411.tar.xz linux-dev-34b06a2eee44d469f2e2c013a83e6dac3aff6411.zip | |
hv_netvsc: Process NETDEV_GOING_DOWN on VF hot remove
On VF hot remove, NETDEV_GOING_DOWN is sent to notify the VF is about to
go down. At this time, the VF is still sending/receiving traffic and we
request the VSP to switch datapath.
On completion, the datapath is switched to synthetic and we can proceed
with VF hot remove.
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/hyperv/netvsc_drv.c')
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 64ae5f4e974e..75b4d6703cf1 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2382,12 +2382,15 @@ static int netvsc_register_vf(struct net_device *vf_netdev) * During hibernation, if a VF NIC driver (e.g. mlx5) preserves the network * interface, there is only the CHANGE event and no UP or DOWN event. */ -static int netvsc_vf_changed(struct net_device *vf_netdev) +static int netvsc_vf_changed(struct net_device *vf_netdev, unsigned long event) { struct net_device_context *net_device_ctx; struct netvsc_device *netvsc_dev; struct net_device *ndev; - bool vf_is_up = netif_running(vf_netdev); + bool vf_is_up = false; + + if (event != NETDEV_GOING_DOWN) + vf_is_up = netif_running(vf_netdev); ndev = get_netvsc_byref(vf_netdev); if (!ndev) @@ -2716,7 +2719,8 @@ static int netvsc_netdev_event(struct notifier_block *this, case NETDEV_UP: case NETDEV_DOWN: case NETDEV_CHANGE: - return netvsc_vf_changed(event_dev); + case NETDEV_GOING_DOWN: + return netvsc_vf_changed(event_dev, event); default: return NOTIFY_DONE; } |