Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <ler...@redhat.com> --- OvmfPkg/VirtioNetDxe/SnpShutdown.c | 80 ++++++++++++++++++++++++++++++++++++ 1 files changed, 80 insertions(+), 0 deletions(-) create mode 100644 OvmfPkg/VirtioNetDxe/SnpShutdown.c
diff --git a/OvmfPkg/VirtioNetDxe/SnpShutdown.c b/OvmfPkg/VirtioNetDxe/SnpShutdown.c new file mode 100644 index 0000000..f87bb51 --- /dev/null +++ b/OvmfPkg/VirtioNetDxe/SnpShutdown.c @@ -0,0 +1,80 @@ +/** @file + + Implementation of the SNP.Shutdown() function and its private helpers if any. + + Copyright (C) 2013, Red Hat, Inc. + + UEFI API documentation: + Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> + + This program and the accompanying materials are licensed and made available + under the terms and conditions of the BSD License which accompanies this + distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT + WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include <Library/UefiBootServicesTableLib.h> + +#include "VirtioNet.h" + +/** + Resets a network adapter and leaves it in a state that is safe for another + driver to initialize. + + @param This Protocol instance pointer. + + @retval EFI_SUCCESS The network interface was shutdown. + @retval EFI_NOT_STARTED The network interface has not been started. + @retval EFI_INVALID_PARAMETER One or more of the parameters has an + unsupported value. + @retval EFI_DEVICE_ERROR The command could not be sent to the network + interface. + @retval EFI_UNSUPPORTED This function is not supported by the network + interface. + +**/ + +EFI_STATUS +EFIAPI +VirtioNetShutdown ( + IN EFI_SIMPLE_NETWORK_PROTOCOL *This + ) +{ + VNET_DEV *Dev; + EFI_TPL OldTpl; + EFI_STATUS Status; + + if (This == NULL) { + return EFI_INVALID_PARAMETER; + } + + Dev = VIRTIO_NET_FROM_SNP (This); + OldTpl = gBS->RaiseTPL (TPL_CALLBACK); + switch (Dev->Snm.State) { + case EfiSimpleNetworkStopped: + Status = EFI_NOT_STARTED; + goto Exit; + case EfiSimpleNetworkStarted: + Status = EFI_DEVICE_ERROR; + goto Exit; + default: + break; + } + + VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, 0); + VirtioNetShutdownRx (Dev); + VirtioNetShutdownTx (Dev); + VirtioRingUninit (&Dev->TxRing); + VirtioRingUninit (&Dev->RxRing); + + Dev->Snm.State = EfiSimpleNetworkStarted; + Status = EFI_SUCCESS; + +Exit: + gBS->RestoreTPL (OldTpl); + return Status; +} -- 1.7.1 ------------------------------------------------------------------------------ AlienVault Unified Security Management (USM) platform delivers complete security visibility with the essential security capabilities. Easily and efficiently configure, manage, and operate all of your security controls from a single console and one unified framework. Download a free trial. http://p.sf.net/sfu/alienvault_d2d _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
