mirror of https://github.com/acidanthera/audk.git
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/** @file
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Virtio Network Device specific type and macro definitions corresponding to
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the virtio-0.9.5 specification.
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Copyright (C) 2013, Red Hat, Inc.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _VIRTIO_NET_H_
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#define _VIRTIO_NET_H_
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#include <IndustryStandard/Virtio.h>
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//
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// virtio-0.9.5, Appendix C: Network Device
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//
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#pragma pack(1)
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typedef struct {
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UINT8 Mac[6];
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UINT16 LinkStatus;
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} VIRTIO_NET_CONFIG;
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#pragma pack()
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#define OFFSET_OF_VNET(Field) OFFSET_OF (VIRTIO_NET_CONFIG, Field)
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#define SIZE_OF_VNET(Field) (sizeof ((VIRTIO_NET_CONFIG *) 0)->Field)
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//
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// Queue Identifiers
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//
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#define VIRTIO_NET_Q_RX 0
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#define VIRTIO_NET_Q_TX 1
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//
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// Feature Bits
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//
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#define VIRTIO_NET_F_CSUM BIT0 // host to checksum outgoing packets
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#define VIRTIO_NET_F_GUEST_CSUM BIT1 // guest to checksum incoming packets
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#define VIRTIO_NET_F_MAC BIT5 // MAC available to guest
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#define VIRTIO_NET_F_GSO BIT6 // deprecated
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#define VIRTIO_NET_F_GUEST_TSO4 BIT7 // guest can receive TSOv4
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#define VIRTIO_NET_F_GUEST_TSO6 BIT8 // guest can receive TSOv6
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#define VIRTIO_NET_F_GUEST_ECN BIT9 // guest can receive TSO with ECN
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#define VIRTIO_NET_F_GUEST_UFO BIT10 // guest can receive UFO
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#define VIRTIO_NET_F_HOST_TSO4 BIT11 // host can receive TSOv4
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#define VIRTIO_NET_F_HOST_TSO6 BIT12 // host can receive TSOv6
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#define VIRTIO_NET_F_HOST_ECN BIT13 // host can receive TSO with ECN
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#define VIRTIO_NET_F_HOST_UFO BIT14 // host can receive UFO
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#define VIRTIO_NET_F_MRG_RXBUF BIT15 // guest can merge receive buffers
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#define VIRTIO_NET_F_STATUS BIT16 // link status available to guest
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#define VIRTIO_NET_F_CTRL_VQ BIT17 // control channel available
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#define VIRTIO_NET_F_CTRL_RX BIT18 // control channel RX mode support
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#define VIRTIO_NET_F_CTRL_VLAN BIT19 // control channel VLAN filtering
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#define VIRTIO_NET_F_GUEST_ANNOUNCE BIT21 // guest can send gratuitous pkts
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//
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// Packet Header
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//
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#pragma pack(1)
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typedef struct {
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UINT8 Flags;
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UINT8 GsoType;
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UINT16 HdrLen;
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UINT16 GsoSize;
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UINT16 CsumStart;
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UINT16 CsumOffset;
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} VIRTIO_NET_REQ;
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#pragma pack()
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//
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// Bits in VIRTIO_NET_REQ.Flags
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//
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#define VIRTIO_NET_HDR_F_NEEDS_CSUM BIT0
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//
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// Types/Bits for VIRTIO_NET_REQ.GsoType
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//
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#define VIRTIO_NET_HDR_GSO_NONE 0x00
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#define VIRTIO_NET_HDR_GSO_TCPV4 0x01
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#define VIRTIO_NET_HDR_GSO_UDP 0x03
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#define VIRTIO_NET_HDR_GSO_TCPV6 0x04
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#define VIRTIO_NET_HDR_GSO_ECN BIT7
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//
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// Link Status Bits in VIRTIO_NET_CONFIG.LinkStatus
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//
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#define VIRTIO_NET_S_LINK_UP BIT0
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#define VIRTIO_NET_S_ANNOUNCE BIT1
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#endif // _VIRTIO_NET_H_
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