audk/OvmfPkg/VirtioNetDxe/SnpSharedHelpers.c

54 lines
1.4 KiB
C

/** @file
Helper functions used by at least two Simple Network Protocol methods.
Copyright (C) 2013, Red Hat, Inc.
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/MemoryAllocationLib.h>
#include "VirtioNet.h"
/**
Release RX and TX resources on the boundary of the
EfiSimpleNetworkInitialized state.
These functions contribute to rolling back a partial, failed initialization
of the virtio-net SNP driver instance, or to shutting down a fully
initialized, running instance.
They are only callable by the VirtioNetInitialize() and the
VirtioNetShutdown() SNP methods. See the state diagram in "VirtioNet.h".
@param[in,out] Dev The VNET_DEV driver instance being shut down, or whose
partial, failed initialization is being rolled back.
*/
VOID
EFIAPI
VirtioNetShutdownRx (
IN OUT VNET_DEV *Dev
)
{
FreePool (Dev->RxBuf);
}
VOID
EFIAPI
VirtioNetShutdownTx (
IN OUT VNET_DEV *Dev
)
{
FreePool (Dev->TxFreeStack);
}