mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
121 lines
3.1 KiB
121 lines
3.1 KiB
// 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
|
|
|