89c1dc774e
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>
133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file
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* Structures defined in the vhost-user specification
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*/
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#ifndef SPDK_VHOST_USER_H
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#define SPDK_VHOST_USER_H
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#include "spdk/stdinc.h"
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#include <linux/vhost.h>
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#ifndef VHOST_USER_MEMORY_MAX_NREGIONS
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#define VHOST_USER_MEMORY_MAX_NREGIONS 8
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#endif
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#ifndef VHOST_USER_MAX_CONFIG_SIZE
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#define VHOST_USER_MAX_CONFIG_SIZE 256
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#endif
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#ifndef VHOST_USER_PROTOCOL_F_MQ
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#define VHOST_USER_PROTOCOL_F_MQ 0
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#endif
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#ifndef VHOST_USER_PROTOCOL_F_CONFIG
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#define VHOST_USER_PROTOCOL_F_CONFIG 9
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#endif
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enum vhost_user_request {
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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_GET_CONFIG = 24,
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VHOST_USER_SET_CONFIG = 25,
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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
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};
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/** Get/set config msg payload */
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struct vhost_user_config {
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uint32_t offset;
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uint32_t size;
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uint32_t flags;
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uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
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};
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/** Fixed-size vhost_memory struct */
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struct vhost_memory_padded {
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uint32_t nregions;
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uint32_t padding;
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struct vhost_memory_region regions[VHOST_USER_MEMORY_MAX_NREGIONS];
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};
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struct vhost_user_msg {
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enum vhost_user_request 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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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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struct vhost_memory_padded memory;
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struct vhost_user_config cfg;
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} payload;
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} __attribute((packed));
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#define VHOST_USER_HDR_SIZE offsetof(struct vhost_user_msg, payload.u64)
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#define VHOST_USER_PAYLOAD_SIZE \
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(sizeof(struct vhost_user_msg) - VHOST_USER_HDR_SIZE)
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#endif /* SPDK_VHOST_USER_H */
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