Set needed_headroom according to VF if VF needs a bigger headroom. Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> --- drivers/net/hyperv/netvsc_drv.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index f682a5572d84..382bebc2420d 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2384,6 +2384,9 @@ static int netvsc_register_vf(struct net_device *vf_netdev) dev_hold(vf_netdev); rcu_assign_pointer(net_device_ctx->vf_netdev, vf_netdev); + if (ndev->needed_headroom < vf_netdev->needed_headroom) + ndev->needed_headroom = vf_netdev->needed_headroom; + vf_netdev->wanted_features = ndev->features; netdev_update_features(vf_netdev); @@ -2462,6 +2465,8 @@ static int netvsc_unregister_vf(struct net_device *vf_netdev) RCU_INIT_POINTER(net_device_ctx->vf_netdev, NULL); dev_put(vf_netdev); + ndev->needed_headroom = RNDIS_AND_PPI_SIZE; + return NOTIFY_OK; } -- 2.25.1
