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authorHaiyang Zhang <haiyangz@microsoft.com>2021-06-18 22:35:39 +0300
committerDavid S. Miller <davem@davemloft.net>2021-06-21 22:10:00 +0300
commit536ba2e06d1aaaed8a11c30e1609281cd955082e (patch)
tree0b1b88d2d9887c3f852e49968bbd4866fdb846be /drivers/net/hyperv
parent2b4cd14fd995e0a863b2ced4cba0bcd804d89ebc (diff)
downloadlinux-536ba2e06d1aaaed8a11c30e1609281cd955082e.tar.xz
hv_netvsc: Set needed_headroom according to VF
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>
Diffstat (limited to 'drivers/net/hyperv')
-rw-r--r--drivers/net/hyperv/netvsc_drv.c5
1 files changed, 5 insertions, 0 deletions
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;
}