d237aba3b9
Implemented vhost abstraction layer in preparations for vhost-blk. Generalized vhost interface and separated vhost-scsi code. Code placement: vhost.h * vhost_startup() & shutdown() * public generic controller API vhost_internal.h * includes rte_vhost.h from DPDK * struct spdk_vhost_dev (it has to be inherited by vhost_scsi) * vhost_dev management * register/unregister() to be used in new_device()/destroy_device() * construct/destruct() to be used on permanent creation/destruction. * reactor core management vhost_scsi.h * spdk_vhost_scsi_dev management * reading VhostScsi section of vhost config file * creating/removing controllers * adding/removing devices to controllers vhost_scsi.c * virtio scsi logic * new_device(), destroy_device() Change-Id: Iaf661b14eba034593bef24853c525935d9b18e46 Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/361963 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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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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#ifndef SPDK_VHOST_INTERNAL_H
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#define SPDK_VHOST_INTERNAL_H
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#include "spdk/stdinc.h"
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#include <rte_vhost.h>
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#include "spdk_internal/log.h"
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#include "spdk/event.h"
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#define SPDK_CACHE_LINE_SIZE RTE_CACHE_LINE_SIZE
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#define MAX_VHOST_VRINGS 256
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struct spdk_vhost_dev {
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struct rte_vhost_memory *mem;
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char *name;
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int vid;
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int task_cnt;
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int32_t lcore;
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uint64_t cpumask;
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uint16_t num_queues;
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uint64_t negotiated_features;
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struct rte_vhost_vring virtqueue[MAX_VHOST_VRINGS] __attribute((aligned(SPDK_CACHE_LINE_SIZE)));
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};
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struct spdk_vhost_dev_backend {
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uint64_t virtio_features;
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uint64_t disabled_features;
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const struct vhost_device_ops ops;
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};
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uint32_t spdk_vhost_allocate_reactor(uint64_t cpumask);
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void spdk_vhost_free_reactor(uint32_t lcore);
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struct spdk_vhost_dev *spdk_vhost_dev_find_by_vid(int vid);
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int spdk_vhost_dev_construct(struct spdk_vhost_dev *dev);
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int spdk_vhost_dev_register(struct spdk_vhost_dev *dev,
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const struct spdk_vhost_dev_backend *backend);
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int spdk_vhost_dev_unregister(struct spdk_vhost_dev *vdev);
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void spdk_vhost_dev_destruct(struct spdk_vhost_dev *dev);
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#endif /* SPDK_VHOST_INTERNAL_H */
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