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hv_netvsc: Set needed_headroom according to VF

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Set needed_headroom according to VF if VF needs a bigger
headroom.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang 2021-06-18 12:35:39 -07:00 committed by David S. Miller
parent 2b4cd14fd9
commit 536ba2e06d
1 changed files with 5 additions and 0 deletions
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5
drivers/net/hyperv/netvsc_drv.c
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@ -2384,6 +2384,9 @@ static int netvsc_register_vf(struct net_device *vf_netdev)
dev_hold(vf_netdev); dev_hold(vf_netdev);
rcu_assign_pointer(net_device_ctx->vf_netdev, 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; vf_netdev->wanted_features = ndev->features;
netdev_update_features(vf_netdev); 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); RCU_INIT_POINTER(net_device_ctx->vf_netdev, NULL);
dev_put(vf_netdev); dev_put(vf_netdev);
ndev->needed_headroom = RNDIS_AND_PPI_SIZE;
return NOTIFY_OK; return NOTIFY_OK;
} }