mirror of https://gitee.com/openkylin/linux.git
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/* Vhost-user protocol */
|
|
|
|
#ifndef __VHOST_USER_H__
|
|
#define __VHOST_USER_H__
|
|
|
|
/* Message flags */
|
|
#define VHOST_USER_FLAG_REPLY BIT(2)
|
|
#define VHOST_USER_FLAG_NEED_REPLY BIT(3)
|
|
/* Feature bits */
|
|
#define VHOST_USER_F_PROTOCOL_FEATURES 30
|
|
/* Protocol feature bits */
|
|
#define VHOST_USER_PROTOCOL_F_REPLY_ACK 3
|
|
#define VHOST_USER_PROTOCOL_F_SLAVE_REQ 5
|
|
#define VHOST_USER_PROTOCOL_F_CONFIG 9
|
|
#define VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS 14
|
|
/* Vring state index masks */
|
|
#define VHOST_USER_VRING_INDEX_MASK 0xff
|
|
#define VHOST_USER_VRING_POLL_MASK BIT(8)
|
|
|
|
/* Supported version */
|
|
#define VHOST_USER_VERSION 1
|
|
/* Supported transport features */
|
|
#define VHOST_USER_SUPPORTED_F BIT_ULL(VHOST_USER_F_PROTOCOL_FEATURES)
|
|
/* Supported protocol features */
|
|
#define VHOST_USER_SUPPORTED_PROTOCOL_F (BIT_ULL(VHOST_USER_PROTOCOL_F_REPLY_ACK) | \
|
|
BIT_ULL(VHOST_USER_PROTOCOL_F_SLAVE_REQ) | \
|
|
BIT_ULL(VHOST_USER_PROTOCOL_F_CONFIG) | \
|
|
BIT_ULL(VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS))
|
|
|
|
enum vhost_user_request {
|
|
VHOST_USER_GET_FEATURES = 1,
|
|
VHOST_USER_SET_FEATURES = 2,
|
|
VHOST_USER_SET_OWNER = 3,
|
|
VHOST_USER_RESET_OWNER = 4,
|
|
VHOST_USER_SET_MEM_TABLE = 5,
|
|
VHOST_USER_SET_LOG_BASE = 6,
|
|
VHOST_USER_SET_LOG_FD = 7,
|
|
VHOST_USER_SET_VRING_NUM = 8,
|
|
VHOST_USER_SET_VRING_ADDR = 9,
|
|
VHOST_USER_SET_VRING_BASE = 10,
|
|
VHOST_USER_GET_VRING_BASE = 11,
|
|
VHOST_USER_SET_VRING_KICK = 12,
|
|
VHOST_USER_SET_VRING_CALL = 13,
|
|
VHOST_USER_SET_VRING_ERR = 14,
|
|
VHOST_USER_GET_PROTOCOL_FEATURES = 15,
|
|
VHOST_USER_SET_PROTOCOL_FEATURES = 16,
|
|
VHOST_USER_GET_QUEUE_NUM = 17,
|
|
VHOST_USER_SET_VRING_ENABLE = 18,
|
|
VHOST_USER_SEND_RARP = 19,
|
|
VHOST_USER_NET_SEND_MTU = 20,
|
|
VHOST_USER_SET_SLAVE_REQ_FD = 21,
|
|
VHOST_USER_IOTLB_MSG = 22,
|
|
VHOST_USER_SET_VRING_ENDIAN = 23,
|
|
VHOST_USER_GET_CONFIG = 24,
|
|
VHOST_USER_SET_CONFIG = 25,
|
|
VHOST_USER_VRING_KICK = 35,
|
|
};
|
|
|
|
enum vhost_user_slave_request {
|
|
VHOST_USER_SLAVE_IOTLB_MSG = 1,
|
|
VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2,
|
|
VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3,
|
|
VHOST_USER_SLAVE_VRING_CALL = 4,
|
|
};
|
|
|
|
struct vhost_user_header {
|
|
/*
|
|
* Use enum vhost_user_request for outgoing messages,
|
|
* uses enum vhost_user_slave_request for incoming ones.
|
|
*/
|
|
u32 request;
|
|
u32 flags;
|
|
u32 size;
|
|
} __packed;
|
|
|
|
struct vhost_user_config {
|
|
u32 offset;
|
|
u32 size;
|
|
u32 flags;
|
|
u8 payload[]; /* Variable length */
|
|
} __packed;
|
|
|
|
struct vhost_user_vring_state {
|
|
u32 index;
|
|
u32 num;
|
|
} __packed;
|
|
|
|
struct vhost_user_vring_addr {
|
|
u32 index;
|
|
u32 flags;
|
|
u64 desc, used, avail, log;
|
|
} __packed;
|
|
|
|
struct vhost_user_mem_region {
|
|
u64 guest_addr;
|
|
u64 size;
|
|
u64 user_addr;
|
|
u64 mmap_offset;
|
|
} __packed;
|
|
|
|
struct vhost_user_mem_regions {
|
|
u32 num;
|
|
u32 padding;
|
|
struct vhost_user_mem_region regions[2]; /* Currently supporting 2 */
|
|
} __packed;
|
|
|
|
union vhost_user_payload {
|
|
u64 integer;
|
|
struct vhost_user_config config;
|
|
struct vhost_user_vring_state vring_state;
|
|
struct vhost_user_vring_addr vring_addr;
|
|
struct vhost_user_mem_regions mem_regions;
|
|
};
|
|
|
|
struct vhost_user_msg {
|
|
struct vhost_user_header header;
|
|
union vhost_user_payload payload;
|
|
} __packed;
|
|
|
|
#endif
|