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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
50 #define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
51 (1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
52 (1ULL << VHOST_USER_PROTOCOL_F_RARP))
54 typedef enum VhostUserRequest {
56 VHOST_USER_GET_FEATURES = 1,
57 VHOST_USER_SET_FEATURES = 2,
58 VHOST_USER_SET_OWNER = 3,
59 VHOST_USER_RESET_OWNER = 4,
60 VHOST_USER_SET_MEM_TABLE = 5,
61 VHOST_USER_SET_LOG_BASE = 6,
62 VHOST_USER_SET_LOG_FD = 7,
63 VHOST_USER_SET_VRING_NUM = 8,
64 VHOST_USER_SET_VRING_ADDR = 9,
65 VHOST_USER_SET_VRING_BASE = 10,
66 VHOST_USER_GET_VRING_BASE = 11,
67 VHOST_USER_SET_VRING_KICK = 12,
68 VHOST_USER_SET_VRING_CALL = 13,
69 VHOST_USER_SET_VRING_ERR = 14,
70 VHOST_USER_GET_PROTOCOL_FEATURES = 15,
71 VHOST_USER_SET_PROTOCOL_FEATURES = 16,
72 VHOST_USER_GET_QUEUE_NUM = 17,
73 VHOST_USER_SET_VRING_ENABLE = 18,
74 VHOST_USER_SEND_RARP = 19,
78 typedef struct VhostUserMemoryRegion {
79 uint64_t guest_phys_addr;
81 uint64_t userspace_addr;
83 } VhostUserMemoryRegion;
85 typedef struct VhostUserMemory {
88 VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
91 typedef struct VhostUserLog {
96 typedef struct VhostUserMsg {
97 VhostUserRequest request;
99 #define VHOST_USER_VERSION_MASK 0x3
100 #define VHOST_USER_REPLY_MASK (0x1 << 2)
102 uint32_t size; /* the following payload size */
104 #define VHOST_USER_VRING_IDX_MASK 0xff
105 #define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
107 struct vhost_vring_state state;
108 struct vhost_vring_addr addr;
109 VhostUserMemory memory;
112 int fds[VHOST_MEMORY_MAX_NREGIONS];
113 } __attribute((packed)) VhostUserMsg;
115 #define VHOST_USER_HDR_SIZE offsetof(VhostUserMsg, payload.u64)
117 /* The version of the protocol we support */
118 #define VHOST_USER_VERSION 0x1
122 int vhost_user_msg_handler(int vid, int fd);
125 int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
126 int send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);