1ca017e0df
We will enable vhost live recovery and packed ring feature in next few days, however most of the code is in DPDK vhost library, so we will not enable this feature for our internal vhost library, but there are many users still use it, so we will not support the new features with internal vhost library but will maintain it until we can drop it in future, this is the first patch to do it, another patch will be submitted until the packed ring patches being merged. Change-Id: I50fa0314fd64fa5ee1f06a78e1495e2d0d50a0d0 Signed-off-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/479502 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Community-CI: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
141 lines
4.3 KiB
C
141 lines
4.3 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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#ifndef VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD
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#define VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD 12
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#endif
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#ifndef VHOST_USER_F_PROTOCOL_FEATURES
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#define VHOST_USER_F_PROTOCOL_FEATURES 30
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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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