1cd3705ecb
Change-Id: Ia254885e2603f3b10b92910b53ce0db9e95c22b5 Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/373760 Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
112 lines
4.2 KiB
C
112 lines
4.2 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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/**
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* \file
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* SPDK vhost
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*/
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#ifndef SPDK_VHOST_H
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#define SPDK_VHOST_H
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#include "spdk/stdinc.h"
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#include "spdk/event.h"
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int spdk_vhost_init(void);
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int spdk_vhost_fini(void);
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/**
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* \param event event object. event arg1 is optional path to vhost socket.
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*/
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void spdk_vhost_startup(void *arg1, void *arg2);
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void spdk_vhost_shutdown_cb(void);
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/* Forward declaration */
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struct spdk_vhost_dev;
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typedef int (*spdk_vhost_event_fn)(struct spdk_vhost_dev *, void *);
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const char *spdk_vhost_dev_get_name(struct spdk_vhost_dev *ctrl);
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uint64_t spdk_vhost_dev_get_cpumask(struct spdk_vhost_dev *ctrl);
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int spdk_vhost_scsi_dev_construct(const char *name, const char *cpumask);
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int spdk_vhost_scsi_dev_remove(struct spdk_vhost_dev *vdev);
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struct spdk_scsi_dev *spdk_vhost_scsi_dev_get_dev(struct spdk_vhost_dev *ctrl, uint8_t num);
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int spdk_vhost_scsi_dev_add_dev(struct spdk_vhost_dev *vdev, unsigned scsi_dev_num,
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const char *lun_name);
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int spdk_vhost_scsi_dev_remove_dev(struct spdk_vhost_dev *vdev, unsigned scsi_dev_num,
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spdk_vhost_event_fn cb_fn, void *cb_arg);
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int spdk_vhost_blk_construct(const char *name, const char *cpumask, const char *dev_name,
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bool readonly);
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int spdk_vhost_blk_destroy(struct spdk_vhost_dev *dev);
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struct spdk_bdev *spdk_vhost_blk_get_dev(struct spdk_vhost_dev *ctrlr);
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/**
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* Call function on reactor of given vhost controller.
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* If controller is not in use, the event will be called
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* right away on the caller's thread.
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*
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* This function is thread safe.
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*
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* \param ctrlr_name name of the vhost controller to run
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* this event on
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* \param fn function to be called. The first parameter
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* of callback function is either actual spdk_vhost_dev
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* pointer or NULL in case vdev with given name doesn't
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* exist. The second param is user provided argument *arg*.
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* \param arg parameter to be passed to *fn*.
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*/
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void spdk_vhost_call_external_event(const char *ctrlr_name, spdk_vhost_event_fn fn, void *arg);
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/**
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* Call function for each available vhost controller on
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* it's reactor. This will call given function in a chain,
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* meaning that each callback will be called after the
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* previous one has finished. After given function has
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* been called for all controllers, it will be called
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* once again with first param - vhost controller - set
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* to NULL.
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*
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* This function is thread safe.
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*
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* \param fn function to be called for each controller.
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* The first param will be either vdev pointer or NULL.
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* The second param is user provided argument *arg*.
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* \param arg parameter to be passed to *fn*.
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*/
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void spdk_vhost_call_external_event_foreach(spdk_vhost_event_fn fn, void *arg);
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#endif /* SPDK_VHOST_H */
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