| 1 | /** @file
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| 2 | Virtio Network Device specific type and macro definitions corresponding to
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| 3 | the virtio-0.9.5 specification.
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| 4 |
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| 5 | Copyright (C) 2013-2016, Red Hat, Inc.
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| 6 |
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| 7 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 8 |
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| 9 | **/
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| 10 |
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| 11 | #ifndef _VIRTIO_0_9_5_NET_H_
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| 12 | #define _VIRTIO_0_9_5_NET_H_
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| 13 |
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| 14 | #include <IndustryStandard/Virtio095.h>
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| 15 |
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| 16 | //
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| 17 | // virtio-0.9.5, Appendix C: Network Device
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| 18 | //
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| 19 | #pragma pack(1)
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| 20 | typedef struct {
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| 21 | UINT8 Mac[6];
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| 22 | UINT16 LinkStatus;
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| 23 | } VIRTIO_NET_CONFIG;
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| 24 | #pragma pack()
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| 25 |
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| 26 | #define OFFSET_OF_VNET(Field) OFFSET_OF (VIRTIO_NET_CONFIG, Field)
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| 27 | #define SIZE_OF_VNET(Field) (sizeof ((VIRTIO_NET_CONFIG *) 0)->Field)
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| 28 |
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| 29 | //
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| 30 | // Queue Identifiers
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| 31 | //
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| 32 | #define VIRTIO_NET_Q_RX 0
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| 33 | #define VIRTIO_NET_Q_TX 1
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| 34 |
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| 35 | //
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| 36 | // Feature Bits
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| 37 | //
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| 38 | #define VIRTIO_NET_F_CSUM BIT0 // host to checksum outgoing packets
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| 39 | #define VIRTIO_NET_F_GUEST_CSUM BIT1 // guest to checksum incoming packets
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| 40 | #define VIRTIO_NET_F_MAC BIT5 // MAC available to guest
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| 41 | #define VIRTIO_NET_F_GSO BIT6 // deprecated
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| 42 | #define VIRTIO_NET_F_GUEST_TSO4 BIT7 // guest can receive TSOv4
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| 43 | #define VIRTIO_NET_F_GUEST_TSO6 BIT8 // guest can receive TSOv6
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| 44 | #define VIRTIO_NET_F_GUEST_ECN BIT9 // guest can receive TSO with ECN
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| 45 | #define VIRTIO_NET_F_GUEST_UFO BIT10 // guest can receive UFO
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| 46 | #define VIRTIO_NET_F_HOST_TSO4 BIT11 // host can receive TSOv4
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| 47 | #define VIRTIO_NET_F_HOST_TSO6 BIT12 // host can receive TSOv6
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| 48 | #define VIRTIO_NET_F_HOST_ECN BIT13 // host can receive TSO with ECN
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| 49 | #define VIRTIO_NET_F_HOST_UFO BIT14 // host can receive UFO
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| 50 | #define VIRTIO_NET_F_MRG_RXBUF BIT15 // guest can merge receive buffers
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| 51 | #define VIRTIO_NET_F_STATUS BIT16 // link status available to guest
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| 52 | #define VIRTIO_NET_F_CTRL_VQ BIT17 // control channel available
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| 53 | #define VIRTIO_NET_F_CTRL_RX BIT18 // control channel RX mode support
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| 54 | #define VIRTIO_NET_F_CTRL_VLAN BIT19 // control channel VLAN filtering
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| 55 | #define VIRTIO_NET_F_GUEST_ANNOUNCE BIT21 // guest can send gratuitous pkts
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| 56 |
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| 57 | //
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| 58 | // Packet Header
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| 59 | //
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| 60 | #pragma pack(1)
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| 61 | typedef struct {
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| 62 | UINT8 Flags;
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| 63 | UINT8 GsoType;
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| 64 | UINT16 HdrLen;
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| 65 | UINT16 GsoSize;
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| 66 | UINT16 CsumStart;
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| 67 | UINT16 CsumOffset;
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| 68 | } VIRTIO_NET_REQ;
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| 69 | #pragma pack()
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| 70 |
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| 71 | //
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| 72 | // Bits in VIRTIO_NET_REQ.Flags
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| 73 | //
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| 74 | #define VIRTIO_NET_HDR_F_NEEDS_CSUM BIT0
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| 75 |
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| 76 | //
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| 77 | // Types/Bits for VIRTIO_NET_REQ.GsoType
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| 78 | //
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| 79 | #define VIRTIO_NET_HDR_GSO_NONE 0x00
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| 80 | #define VIRTIO_NET_HDR_GSO_TCPV4 0x01
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| 81 | #define VIRTIO_NET_HDR_GSO_UDP 0x03
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| 82 | #define VIRTIO_NET_HDR_GSO_TCPV6 0x04
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| 83 | #define VIRTIO_NET_HDR_GSO_ECN BIT7
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| 84 |
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| 85 | //
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| 86 | // Link Status Bits in VIRTIO_NET_CONFIG.LinkStatus
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| 87 | //
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| 88 | #define VIRTIO_NET_S_LINK_UP BIT0
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| 89 | #define VIRTIO_NET_S_ANNOUNCE BIT1
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| 90 |
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| 91 | #endif // _VIRTIO_0_9_5_NET_H_
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