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Reactos
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134/* * This file contains common guest/host definition, related * to VirtIO network adapter * * Copyright (c) 2008-2017 Red Hat, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met : * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and / or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of their contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */#ifndef IONETDESCRIPTOR_H#define IONETDESCRIPTOR_H
#pragma pack (push)#pragma pack (1)/* This is the first element of the scatter-gather list. If you don't * specify GSO or CSUM features, you can simply ignore the header. */typedef struct _tagvirtio_net_hdr{#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset#define VIRTIO_NET_HDR_F_DATA_VALID 2 // Host checked checksum, no need to recheck u8 flags;#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set u8 gso_type; u16 hdr_len; // Ethernet + IP + tcp/udp hdrs u16 gso_size; // Bytes to append to gso_hdr_len per frame u16 csum_start; // Position to start checksumming from u16 csum_offset; // Offset after that to place checksum}virtio_net_hdr_basic;
typedef struct _tagvirtio_net_hdr_ext{ virtio_net_hdr_basic BasicHeader; u16 nBuffers;}virtio_net_hdr_ext;
/* * Control virtqueue data structures * * The control virtqueue expects a header in the first sg entry * and an ack/status response in the last entry. Data for the * command goes in between. */typedef struct tag_virtio_net_ctrl_hdr { u8 class_of_command; u8 cmd;}virtio_net_ctrl_hdr;
typedef u8 virtio_net_ctrl_ack;
#define VIRTIO_NET_OK 0#define VIRTIO_NET_ERR 1
/* * Control the RX mode, ie. promiscuous, allmulti, etc... * All commands require an "out" sg entry containing a 1 byte * state value, zero = disable, non-zero = enable. Commands * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. */#define VIRTIO_NET_CTRL_RX_MODE 0 #define VIRTIO_NET_CTRL_RX_MODE_PROMISC 0 #define VIRTIO_NET_CTRL_RX_MODE_ALLMULTI 1 #define VIRTIO_NET_CTRL_RX_MODE_ALLUNI 2 #define VIRTIO_NET_CTRL_RX_MODE_NOMULTI 3 #define VIRTIO_NET_CTRL_RX_MODE_NOUNI 4 #define VIRTIO_NET_CTRL_RX_MODE_NOBCAST 5
/* * Control the MAC filter table. * * The MAC filter table is managed by the hypervisor, the guest should * assume the size is infinite. Filtering should be considered * non-perfect, ie. based on hypervisor resources, the guest may * received packets from sources not specified in the filter list. * * In addition to the class/cmd header, the TABLE_SET command requires * two out scatterlists. Each contains a 4 byte count of entries followed * by a concatenated byte stream of the ETH_ALEN MAC addresses. The * first sg list contains unicast addresses, the second is for multicast. * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature * is available. */#define ETH_ALEN 6
struct virtio_net_ctrl_mac { u32 entries; // follows //u8 macs[][ETH_ALEN];};#define VIRTIO_NET_CTRL_MAC 1 #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
/* * Control VLAN filtering * * The VLAN filter table is controlled via a simple ADD/DEL interface. * VLAN IDs not added may be filterd by the hypervisor. Del is the * opposite of add. Both commands expect an out entry containing a 2 * byte VLAN ID. VLAN filtering is available with the * VIRTIO_NET_F_CTRL_VLAN feature bit. */#define VIRTIO_NET_CTRL_VLAN 2 #define VIRTIO_NET_CTRL_VLAN_ADD 0 #define VIRTIO_NET_CTRL_VLAN_DEL 1
#pragma pack (pop)
#endif