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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#ifndef _VHOST_NET_USER_H
#define _VHOST_NET_USER_H
#include <stdint.h>
#include <linux/vhost.h>
#include "rte_vhost.h"
/* refer to hw/virtio/vhost-user.c */
#define VHOST_MEMORY_MAX_NREGIONS 8
#define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
(1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
(1ULL << VHOST_USER_PROTOCOL_F_RARP) | \
(1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK) | \
(1ULL << VHOST_USER_PROTOCOL_F_NET_MTU) | \
(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_REQ) | \
(1ULL << VHOST_USER_PROTOCOL_F_CRYPTO_SESSION) | \
(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD) | \
(1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER))
typedef enum VhostUserRequest {
VHOST_USER_NONE = 0,
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_SET_MTU = 20,
VHOST_USER_SET_SLAVE_REQ_FD = 21,
VHOST_USER_IOTLB_MSG = 22,
VHOST_USER_CRYPTO_CREATE_SESS = 26,
VHOST_USER_CRYPTO_CLOSE_SESS = 27,
VHOST_USER_MAX = 28
} VhostUserRequest;
typedef enum VhostUserSlaveRequest {
VHOST_USER_SLAVE_NONE = 0,
VHOST_USER_SLAVE_IOTLB_MSG = 1,
VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3,
VHOST_USER_SLAVE_MAX
} VhostUserSlaveRequest;
typedef struct VhostUserMemoryRegion {
uint64_t guest_phys_addr;
uint64_t memory_size;
uint64_t userspace_addr;
uint64_t mmap_offset;
} VhostUserMemoryRegion;
typedef struct VhostUserMemory {
uint32_t nregions;
uint32_t padding;
VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
} VhostUserMemory;
typedef struct VhostUserLog {
uint64_t mmap_size;
uint64_t mmap_offset;
} VhostUserLog;
/* Comply with Cryptodev-Linux */
#define VHOST_USER_CRYPTO_MAX_HMAC_KEY_LENGTH 512
#define VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH 64
/* Same structure as vhost-user backend session info */
typedef struct VhostUserCryptoSessionParam {
int64_t session_id;
uint32_t op_code;
uint32_t cipher_algo;
uint32_t cipher_key_len;
uint32_t hash_algo;
uint32_t digest_len;
uint32_t auth_key_len;
uint32_t aad_len;
uint8_t op_type;
uint8_t dir;
uint8_t hash_mode;
uint8_t chaining_dir;
uint8_t *ciphe_key;
uint8_t *auth_key;
uint8_t cipher_key_buf[VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH];
uint8_t auth_key_buf[VHOST_USER_CRYPTO_MAX_HMAC_KEY_LENGTH];
} VhostUserCryptoSessionParam;
typedef struct VhostUserVringArea {
uint64_t u64;
uint64_t size;
uint64_t offset;
} VhostUserVringArea;
typedef struct VhostUserMsg {
union {
uint32_t master; /* a VhostUserRequest value */
uint32_t slave; /* a VhostUserSlaveRequest value*/
} request;
#define VHOST_USER_VERSION_MASK 0x3
#define VHOST_USER_REPLY_MASK (0x1 << 2)
#define VHOST_USER_NEED_REPLY (0x1 << 3)
uint32_t flags;
uint32_t size; /* the following payload size */
union {
#define VHOST_USER_VRING_IDX_MASK 0xff
#define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
uint64_t u64;
struct vhost_vring_state state;
struct vhost_vring_addr addr;
VhostUserMemory memory;
VhostUserLog log;
struct vhost_iotlb_msg iotlb;
VhostUserCryptoSessionParam crypto_session;
VhostUserVringArea area;
} payload;
int fds[VHOST_MEMORY_MAX_NREGIONS];
} __attribute((packed)) VhostUserMsg;
#define VHOST_USER_HDR_SIZE offsetof(VhostUserMsg, payload.u64)
/* The version of the protocol we support */
#define VHOST_USER_VERSION 0x1
/* vhost_user.c */
int vhost_user_msg_handler(int vid, int fd);
int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
int vhost_user_host_notifier_ctrl(int vid, bool enable);
/* socket.c */
int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
int send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
#endif
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