vmxnet3: support higher link speeds from vmxnet3 v9

JIRA: https://issues.redhat.com/browse/RHEL-96969

commit 0458cbe
Author: Ronak Doshi <ronak.doshi@broadcom.com>
Date:   Fri Oct 4 10:43:03 2024 -0700

    vmxnet3: support higher link speeds from vmxnet3 v9

    Until now, vmxnet3 was default reporting 10Gbps as link speed.
    Vmxnet3 v9 adds support for user to configure higher link speeds.
    User can configure the link speed via VMs advanced parameters options
    in VCenter. This speed is reported in gbps by hypervisor.

    This patch adds support for vmxnet3 to report higher link speeds and
    converts it to mbps as expected by Linux stack.

    Signed-off-by: Ronak Doshi <ronak.doshi@broadcom.com>
    Acked-by: Guolin Yang <guolin.yang@broadcom.com>
    Reviewed-by: Simon Horman <horms@kernel.org>
    Link: https://patch.msgid.link/20241004174303.5370-1-ronak.doshi@broadcom.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Izabela Bakollari <ibakolla@redhat.com>

Author: Izabela Bakollari

drivers/net/vmxnet3/vmxnet3_drv.c

@@ -201,6 +201,14 @@ vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue)
 
 	adapter->link_speed = ret >> 16;
 	if (ret & 1) { /* Link is up. */
+		/*
+		 * From vmxnet3 v9, the hypervisor reports the speed in Gbps.
+		 * Convert the speed to Mbps before rporting it to the kernel.
+		 * Max link speed supported is 10000G.
+		 */
+		if (VMXNET3_VERSION_GE_9(adapter) &&
+		    adapter->link_speed < 10000)
+			adapter->link_speed = adapter->link_speed * 1000;
 		netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n",
 			    adapter->link_speed);
 		netif_carrier_on(adapter->netdev);