From: Long Li <longli@microsoft.com>
Date: Fri, 8 Jan 2021 16:53:41 -0800
Patch-mainline: v5.12-rc1
Subject: hv_netvsc: Check VF datapath when sending traffic to VF
Git-commit: 69d25a6cf4cadf756460a1bf82996ea240539999
References: bsc#1204017
The driver needs to check if the datapath has been switched to VF before
sending traffic to VF.
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Olaf Hering <ohering@suse.de>
---
drivers/net/hyperv/netvsc_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -539,7 +539,8 @@ static int netvsc_xmit(struct sk_buff *skb, struct net_device *net, bool xdp_tx)
*/
vf_netdev = rcu_dereference_bh(net_device_ctx->vf_netdev);
if (vf_netdev && netif_running(vf_netdev) &&
- netif_carrier_ok(vf_netdev) && !netpoll_tx_running(net))
+ netif_carrier_ok(vf_netdev) && !netpoll_tx_running(net) &&
+ net_device_ctx->data_path_is_vf)
return netvsc_vf_xmit(net, vf_netdev, skb);
/* We will atmost need two pages to describe the rndis