numam-dpdk/examples/vhost_blk/blk_spec.h

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2019 Intel Corporation
*/
#ifndef _BLK_SPEC_H
#define _BLK_SPEC_H
#include <stdint.h>
#ifndef VHOST_USER_MEMORY_MAX_NREGIONS
#define VHOST_USER_MEMORY_MAX_NREGIONS 8
#endif
#ifndef VHOST_USER_MAX_CONFIG_SIZE
#define VHOST_USER_MAX_CONFIG_SIZE 256
#endif
#ifndef VHOST_USER_PROTOCOL_F_CONFIG
#define VHOST_USER_PROTOCOL_F_CONFIG 9
#endif
#ifndef VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD
#define VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD 12
#endif
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
#define VIRTIO_BLK_T_IN 0
#define VIRTIO_BLK_T_OUT 1
#define VIRTIO_BLK_T_FLUSH 4
#define VIRTIO_BLK_T_GET_ID 8
#define VIRTIO_BLK_T_DISCARD 11
#define VIRTIO_BLK_T_WRITE_ZEROES 13
#define VIRTIO_BLK_S_OK 0
#define VIRTIO_BLK_S_IOERR 1
#define VIRTIO_BLK_S_UNSUPP 2
enum vhost_user_request {
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_MAX
};
/** Get/set config msg payload */
struct vhost_user_config {
uint32_t offset;
uint32_t size;
uint32_t flags;
uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
};
/** Fixed-size vhost_memory struct */
struct vhost_memory_padded {
uint32_t nregions;
uint32_t padding;
struct vhost_memory_region regions[VHOST_USER_MEMORY_MAX_NREGIONS];
};
struct vhost_user_msg {
enum vhost_user_request request;
#define VHOST_USER_VERSION_MASK 0x3
#define VHOST_USER_REPLY_MASK (0x1 << 2)
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;
struct vhost_memory_padded memory;
struct vhost_user_config cfg;
} payload;
} __rte_packed;
#endif