8f371c7d64
Extract vring_dev to iovec translation logic to common place. Change-Id: I0c6fc5582dfe341e867ce6749ff29d14a9d12d94 Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com> Reviewed-on: https://review.gerrithub.io/363582 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
140 lines
4.7 KiB
C
140 lines
4.7 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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#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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#ifndef VIRTIO_F_VERSION_1
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#define VIRTIO_F_VERSION_1 32
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#endif
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#define MAX_VHOST_VRINGS 256
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#define SPDK_VHOST_SCSI_CTRLR_MAX_DEVS 8
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enum spdk_vhost_dev_type {
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SPDK_VHOST_DEV_T_SCSI,
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};
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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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enum spdk_vhost_dev_type type;
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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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void spdk_vhost_dev_mem_register(struct spdk_vhost_dev *vdev);
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void spdk_vhost_dev_mem_unregister(struct spdk_vhost_dev *vdev);
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void *spdk_vhost_gpa_to_vva(struct spdk_vhost_dev *vdev, uint64_t addr);
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uint16_t spdk_vhost_vq_avail_ring_get(struct rte_vhost_vring *vq, uint16_t *reqs,
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uint16_t reqs_len);
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bool spdk_vhost_vq_should_notify(struct spdk_vhost_dev *vdev, struct rte_vhost_vring *vq);
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struct vring_desc *spdk_vhost_vq_get_desc(struct rte_vhost_vring *vq, uint16_t req_idx);
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void spdk_vhost_vq_used_ring_enqueue(struct spdk_vhost_dev *vdev, struct rte_vhost_vring *vq,
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uint16_t id, uint32_t len);
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bool spdk_vhost_vring_desc_has_next(struct vring_desc *cur_desc);
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struct vring_desc *spdk_vhost_vring_desc_get_next(struct vring_desc *vq_desc,
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struct vring_desc *cur_desc);
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bool spdk_vhost_vring_desc_is_wr(struct vring_desc *cur_desc);
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bool spdk_vhost_vring_desc_to_iov(struct spdk_vhost_dev *vdev, struct iovec *iov,
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const struct vring_desc *desc);
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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 *vdev, const char *name, uint64_t cpumask,
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enum spdk_vhost_dev_type type, const struct spdk_vhost_dev_backend *backend);
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int spdk_vhost_dev_remove(struct spdk_vhost_dev *vdev);
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struct spdk_vhost_dev *spdk_vhost_dev_load(int vid);
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void spdk_vhost_dev_unload(struct spdk_vhost_dev *dev);
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typedef void (*spdk_vhost_timed_event_fn)(void *);
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struct spdk_vhost_timed_event {
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/** User callback function to be executed on given lcore. */
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spdk_vhost_timed_event_fn cb_fn;
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/** Semaphore used to signal that event is done. */
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sem_t sem;
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/** Timout specified during initialization. */
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struct timespec timeout;
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/** Event object that can be passed to *spdk_event_call()*. */
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struct spdk_event *spdk_event;
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};
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void spdk_vhost_timed_event_init(struct spdk_vhost_timed_event *ev, int32_t lcore,
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spdk_vhost_timed_event_fn cb_fn, void *arg, unsigned timeout_sec);
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void spdk_vhost_timed_event_send(int32_t lcore, spdk_vhost_timed_event_fn cn_fn, void *arg,
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unsigned timeout_sec, const char *errmsg);
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void spdk_vhost_timed_event_wait(struct spdk_vhost_timed_event *event, const char *errmsg);
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#endif /* SPDK_VHOST_INTERNAL_H */
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