From: Haiyang Zhang <haiyangz@microsoft.com>
To: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org
Cc: haiyangz@microsoft.com, kys@microsoft.com,
sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com,
davem@davemloft.net, linux-kernel@vger.kernel.org
Subject: [PATCH net-next] hv_netvsc: Set needed_headroom according to VF
Date: Fri, 18 Jun 2021 12:35:39 -0700 [thread overview]
Message-ID: <1624044939-10310-1-git-send-email-haiyangz@microsoft.com> (raw)
Set needed_headroom according to VF if VF needs a bigger
headroom.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
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
next reply other threads:[~2021-06-18 19:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 19:35 Haiyang Zhang [this message]
2021-06-21 19:20 ` [PATCH net-next] hv_netvsc: Set needed_headroom according to VF patchwork-bot+netdevbpf
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