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virtio: export spec-defined structures into a separate header

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Those will be reused by the vhost target and
its message handling hooks.

Change-Id: If41118e3700f3b445312bb691c493bd13134546b
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/446084
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Darek Stojaczyk 2019-02-25 08:38:15 +01:00 committed by Jim Harris
parent e67743162f
commit 89c1dc774e
3 changed files with 134 additions and 76 deletions
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132
include/spdk_internal/vhost_user.h Normal file
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@ -0,0 +1,132 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** \file
* Structures defined in the vhost-user specification
*/
#ifndef SPDK_VHOST_USER_H
#define SPDK_VHOST_USER_H
#include "spdk/stdinc.h"
#include <linux/vhost.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_MQ
#define VHOST_USER_PROTOCOL_F_MQ 0
#endif
#ifndef VHOST_USER_PROTOCOL_F_CONFIG
#define VHOST_USER_PROTOCOL_F_CONFIG 9
#endif
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_SEND_RARP = 19,
VHOST_USER_NET_SET_MTU = 20,
VHOST_USER_SET_SLAVE_REQ_FD = 21,
VHOST_USER_IOTLB_MSG = 22,
VHOST_USER_GET_CONFIG = 24,
VHOST_USER_SET_CONFIG = 25,
VHOST_USER_CRYPTO_CREATE_SESS = 26,
VHOST_USER_CRYPTO_CLOSE_SESS = 27,
VHOST_USER_POSTCOPY_ADVISE = 28,
VHOST_USER_POSTCOPY_LISTEN = 29,
VHOST_USER_POSTCOPY_END = 30,
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;
} __attribute((packed));
#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
#define VHOST_USER_PAYLOAD_SIZE \
(sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
#endif /* SPDK_VHOST_USER_H */

46
lib/virtio/virtio_user/vhost.h
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@ -36,45 +36,9 @@
#include "spdk/stdinc.h"
#include <linux/vhost.h>
#include "spdk_internal/log.h"
#include "spdk_internal/virtio.h"
#define VHOST_USER_MAX_CONFIG_SIZE 256
#ifndef VHOST_USER_PROTOCOL_F_MQ
#define VHOST_USER_PROTOCOL_F_MQ 0
#endif
#ifndef VHOST_USER_PROTOCOL_F_CONFIG
#define VHOST_USER_PROTOCOL_F_CONFIG 9
#endif
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_GET_CONFIG = 24,
VHOST_USER_SET_CONFIG = 25,
VHOST_USER_MAX
};
#include "spdk_internal/vhost_user.h"
struct virtio_user_backend_ops;
@ -100,14 +64,6 @@ struct virtio_user_backend_ops {
void *arg);
};
/* get/set config msg */
struct vhost_user_config {
uint32_t offset;
uint32_t size;
uint32_t flags;
uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
};
extern struct virtio_user_backend_ops ops_user;
#endif

32
lib/virtio/virtio_user/vhost_user.c
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@ -36,41 +36,11 @@
#include "vhost.h"
#include "spdk/string.h"
#include "spdk_internal/vhost_user.h"
/* The version of the protocol we support */
#define VHOST_USER_VERSION 0x1
#define VHOST_USER_MEMORY_MAX_NREGIONS 8
/** 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;
} __attribute((packed));
#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
#define VHOST_USER_PAYLOAD_SIZE \
(sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
static int
vhost_user_write(int fd, void *buf, int len, int *fds, int fd_num)
{