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/** @file
Virtio Network Device specific type and macro definitions corresponding to
the virtio-0.9.5 specification.
Copyright (C) 2013-2016, Red Hat, Inc.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _VIRTIO_0_9_5_NET_H_
#define _VIRTIO_0_9_5_NET_H_
#include <IndustryStandard/Virtio095.h>
//
// virtio-0.9.5, Appendix C: Network Device
//
#pragma pack(1)
typedef struct {
UINT8 Mac[6];
UINT16 LinkStatus;
} VIRTIO_NET_CONFIG;
#pragma pack()
#define OFFSET_OF_VNET(Field) OFFSET_OF (VIRTIO_NET_CONFIG, Field)
#define SIZE_OF_VNET(Field) (sizeof ((VIRTIO_NET_CONFIG *) 0)->Field)
//
// Queue Identifiers
//
#define VIRTIO_NET_Q_RX 0
#define VIRTIO_NET_Q_TX 1
//
// Feature Bits
//
#define VIRTIO_NET_F_CSUM BIT0 // host to checksum outgoing packets
#define VIRTIO_NET_F_GUEST_CSUM BIT1 // guest to checksum incoming packets
#define VIRTIO_NET_F_MAC BIT5 // MAC available to guest
#define VIRTIO_NET_F_GSO BIT6 // deprecated
#define VIRTIO_NET_F_GUEST_TSO4 BIT7 // guest can receive TSOv4
#define VIRTIO_NET_F_GUEST_TSO6 BIT8 // guest can receive TSOv6
#define VIRTIO_NET_F_GUEST_ECN BIT9 // guest can receive TSO with ECN
#define VIRTIO_NET_F_GUEST_UFO BIT10 // guest can receive UFO
#define VIRTIO_NET_F_HOST_TSO4 BIT11 // host can receive TSOv4
#define VIRTIO_NET_F_HOST_TSO6 BIT12 // host can receive TSOv6
#define VIRTIO_NET_F_HOST_ECN BIT13 // host can receive TSO with ECN
#define VIRTIO_NET_F_HOST_UFO BIT14 // host can receive UFO
#define VIRTIO_NET_F_MRG_RXBUF BIT15 // guest can merge receive buffers
#define VIRTIO_NET_F_STATUS BIT16 // link status available to guest
#define VIRTIO_NET_F_CTRL_VQ BIT17 // control channel available
#define VIRTIO_NET_F_CTRL_RX BIT18 // control channel RX mode support
#define VIRTIO_NET_F_CTRL_VLAN BIT19 // control channel VLAN filtering
#define VIRTIO_NET_F_GUEST_ANNOUNCE BIT21 // guest can send gratuitous pkts
//
// Packet Header
//
#pragma pack(1)
typedef struct {
UINT8 Flags;
UINT8 GsoType;
UINT16 HdrLen;
UINT16 GsoSize;
UINT16 CsumStart;
UINT16 CsumOffset;
} VIRTIO_NET_REQ;
#pragma pack()
//
// Bits in VIRTIO_NET_REQ.Flags
//
#define VIRTIO_NET_HDR_F_NEEDS_CSUM BIT0
//
// Types/Bits for VIRTIO_NET_REQ.GsoType
//
#define VIRTIO_NET_HDR_GSO_NONE 0x00
#define VIRTIO_NET_HDR_GSO_TCPV4 0x01
#define VIRTIO_NET_HDR_GSO_UDP 0x03
#define VIRTIO_NET_HDR_GSO_TCPV6 0x04
#define VIRTIO_NET_HDR_GSO_ECN BIT7
//
// Link Status Bits in VIRTIO_NET_CONFIG.LinkStatus
//
#define VIRTIO_NET_S_LINK_UP BIT0
#define VIRTIO_NET_S_ANNOUNCE BIT1
#endif // _VIRTIO_0_9_5_NET_H_
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