9a0a3a25fa
The master sends this message before stopping handling userfaults, so that the backend closes the userfaultfd. The master waits for the slave to acknowledge the request with an empty 64bits payload for synchronization purpose. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2018 Intel Corporation
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*/
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#ifndef _VHOST_NET_USER_H
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#define _VHOST_NET_USER_H
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#include <stdint.h>
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#include <linux/vhost.h>
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#include "rte_vhost.h"
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/* refer to hw/virtio/vhost-user.c */
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#define VHOST_MEMORY_MAX_NREGIONS 8
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#define VHOST_USER_PROTOCOL_FEATURES ((1ULL << VHOST_USER_PROTOCOL_F_MQ) | \
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(1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) |\
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(1ULL << VHOST_USER_PROTOCOL_F_RARP) | \
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(1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK) | \
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(1ULL << VHOST_USER_PROTOCOL_F_NET_MTU) | \
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(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_REQ) | \
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(1ULL << VHOST_USER_PROTOCOL_F_CRYPTO_SESSION) | \
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(1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD) | \
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(1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER))
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typedef enum VhostUserRequest {
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VHOST_USER_NONE = 0,
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VHOST_USER_GET_FEATURES = 1,
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VHOST_USER_SET_FEATURES = 2,
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VHOST_USER_SET_OWNER = 3,
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VHOST_USER_RESET_OWNER = 4,
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VHOST_USER_SET_MEM_TABLE = 5,
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VHOST_USER_SET_LOG_BASE = 6,
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VHOST_USER_SET_LOG_FD = 7,
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VHOST_USER_SET_VRING_NUM = 8,
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VHOST_USER_SET_VRING_ADDR = 9,
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VHOST_USER_SET_VRING_BASE = 10,
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VHOST_USER_GET_VRING_BASE = 11,
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VHOST_USER_SET_VRING_KICK = 12,
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VHOST_USER_SET_VRING_CALL = 13,
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VHOST_USER_SET_VRING_ERR = 14,
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VHOST_USER_GET_PROTOCOL_FEATURES = 15,
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VHOST_USER_SET_PROTOCOL_FEATURES = 16,
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VHOST_USER_GET_QUEUE_NUM = 17,
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VHOST_USER_SET_VRING_ENABLE = 18,
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VHOST_USER_SEND_RARP = 19,
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VHOST_USER_NET_SET_MTU = 20,
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VHOST_USER_SET_SLAVE_REQ_FD = 21,
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VHOST_USER_IOTLB_MSG = 22,
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VHOST_USER_CRYPTO_CREATE_SESS = 26,
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VHOST_USER_CRYPTO_CLOSE_SESS = 27,
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VHOST_USER_POSTCOPY_ADVISE = 28,
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VHOST_USER_POSTCOPY_LISTEN = 29,
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VHOST_USER_POSTCOPY_END = 30,
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VHOST_USER_MAX = 31
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} VhostUserRequest;
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typedef enum VhostUserSlaveRequest {
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VHOST_USER_SLAVE_NONE = 0,
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VHOST_USER_SLAVE_IOTLB_MSG = 1,
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VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG = 3,
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VHOST_USER_SLAVE_MAX
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} VhostUserSlaveRequest;
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typedef struct VhostUserMemoryRegion {
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uint64_t guest_phys_addr;
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uint64_t memory_size;
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uint64_t userspace_addr;
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uint64_t mmap_offset;
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} VhostUserMemoryRegion;
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typedef struct VhostUserMemory {
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uint32_t nregions;
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uint32_t padding;
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VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
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} VhostUserMemory;
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typedef struct VhostUserLog {
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uint64_t mmap_size;
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uint64_t mmap_offset;
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} VhostUserLog;
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/* Comply with Cryptodev-Linux */
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#define VHOST_USER_CRYPTO_MAX_HMAC_KEY_LENGTH 512
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#define VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH 64
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/* Same structure as vhost-user backend session info */
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typedef struct VhostUserCryptoSessionParam {
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int64_t session_id;
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uint32_t op_code;
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uint32_t cipher_algo;
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uint32_t cipher_key_len;
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uint32_t hash_algo;
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uint32_t digest_len;
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uint32_t auth_key_len;
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uint32_t aad_len;
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uint8_t op_type;
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uint8_t dir;
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uint8_t hash_mode;
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uint8_t chaining_dir;
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uint8_t *ciphe_key;
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uint8_t *auth_key;
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uint8_t cipher_key_buf[VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH];
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uint8_t auth_key_buf[VHOST_USER_CRYPTO_MAX_HMAC_KEY_LENGTH];
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} VhostUserCryptoSessionParam;
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typedef struct VhostUserVringArea {
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uint64_t u64;
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uint64_t size;
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uint64_t offset;
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} VhostUserVringArea;
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typedef struct VhostUserMsg {
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union {
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uint32_t master; /* a VhostUserRequest value */
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uint32_t slave; /* a VhostUserSlaveRequest value*/
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} request;
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#define VHOST_USER_VERSION_MASK 0x3
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#define VHOST_USER_REPLY_MASK (0x1 << 2)
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#define VHOST_USER_NEED_REPLY (0x1 << 3)
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uint32_t flags;
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uint32_t size; /* the following payload size */
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union {
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#define VHOST_USER_VRING_IDX_MASK 0xff
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#define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
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uint64_t u64;
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struct vhost_vring_state state;
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struct vhost_vring_addr addr;
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VhostUserMemory memory;
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VhostUserLog log;
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struct vhost_iotlb_msg iotlb;
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VhostUserCryptoSessionParam crypto_session;
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VhostUserVringArea area;
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} payload;
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int fds[VHOST_MEMORY_MAX_NREGIONS];
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int fd_num;
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} __attribute((packed)) VhostUserMsg;
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#define VHOST_USER_HDR_SIZE offsetof(VhostUserMsg, payload.u64)
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/* The version of the protocol we support */
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#define VHOST_USER_VERSION 0x1
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/* vhost_user.c */
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int vhost_user_msg_handler(int vid, int fd);
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int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
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int vhost_user_host_notifier_ctrl(int vid, bool enable);
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/* socket.c */
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int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int max_fds,
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int *fd_num);
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int send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
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#endif
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