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34 #ifndef _VHOST_NET_USER_H
35 #define _VHOST_NET_USER_H
38 #include <linux/vhost.h>
40 #include "rte_virtio_net.h"
42 /* refer to hw/virtio/vhost-user.c */
44 #define VHOST_MEMORY_MAX_NREGIONS 8
46 #define VHOST_USER_PROTOCOL_F_MQ 0
47 #define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
48 #define VHOST_USER_PROTOCOL_F_RARP 2
49 #define VHOST_USER_PROTOCOL_F_REPLY_ACK 3
51 #define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
52 (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
53 (1ULL << VHOST_USER_PROTOCOL_F_RARP) | \
54 (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
56 typedef enum VhostUserRequest {
58 VHOST_USER_GET_FEATURES = 1,
59 VHOST_USER_SET_FEATURES = 2,
60 VHOST_USER_SET_OWNER = 3,
61 VHOST_USER_RESET_OWNER = 4,
62 VHOST_USER_SET_MEM_TABLE = 5,
63 VHOST_USER_SET_LOG_BASE = 6,
64 VHOST_USER_SET_LOG_FD = 7,
65 VHOST_USER_SET_VRING_NUM = 8,
66 VHOST_USER_SET_VRING_ADDR = 9,
67 VHOST_USER_SET_VRING_BASE = 10,
68 VHOST_USER_GET_VRING_BASE = 11,
69 VHOST_USER_SET_VRING_KICK = 12,
70 VHOST_USER_SET_VRING_CALL = 13,
71 VHOST_USER_SET_VRING_ERR = 14,
72 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
73 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
74 VHOST_USER_GET_QUEUE_NUM = 17,
75 VHOST_USER_SET_VRING_ENABLE = 18,
76 VHOST_USER_SEND_RARP = 19,
80 typedef struct VhostUserMemoryRegion {
81 uint64_t guest_phys_addr;
83 uint64_t userspace_addr;
85 } VhostUserMemoryRegion;
87 typedef struct VhostUserMemory {
90 VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
93 typedef struct VhostUserLog {
98 typedef struct VhostUserMsg {
99 VhostUserRequest request;
101 #define VHOST_USER_VERSION_MASK 0x3
102 #define VHOST_USER_REPLY_MASK (0x1 << 2)
103 #define VHOST_USER_NEED_REPLY (0x1 << 3)
105 uint32_t size; /* the following payload size */
107 #define VHOST_USER_VRING_IDX_MASK 0xff
108 #define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
110 struct vhost_vring_state state;
111 struct vhost_vring_addr addr;
112 VhostUserMemory memory;
115 int fds[VHOST_MEMORY_MAX_NREGIONS];
116 } __attribute((packed)) VhostUserMsg;
118 #define VHOST_USER_HDR_SIZE offsetof(VhostUserMsg, payload.u64)
120 /* The version of the protocol we support */
121 #define VHOST_USER_VERSION 0x1
125 int vhost_user_msg_handler(int vid, int fd);
128 int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
129 int send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);