1dbf53eebf
This patch adds a library, application and test scripts for extending SPDK to present virtio-scsi controllers to QEMU-based VMs and process I/O submitted to devices attached to those controllers. This functionality is dependent on QEMU patches to enable vhost-scsi in userspace - those patches are currently working their way through the QEMU mailing list, but temporary patches to enable this functionality in QEMU will be made available shortly through the SPDK github repository. Signed-off-by: Jim Harris <james.r.harris@intel.com> Signed-off-by: Krzysztof Jakimiak <krzysztof.jakimiak@intel.com> Signed-off-by: Michal Kosciowski <michal.kosciowski@intel.com> Signed-off-by: Karol Latecki <karolx.latecki@intel.com> Signed-off-by: Piotr Pelplinski <piotr.pelplinski@intel.com> Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com> Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Signed-off-by: Krzysztof Jakimiak <krzysztof.jakimiak@intel.com> Change-Id: I138e4021f0ac4b1cd9a6e4041783cdf06e6f0efb
71 lines
2.8 KiB
C
71 lines
2.8 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright (c) Intel Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* SPDK vhost
|
|
*/
|
|
|
|
#ifndef SPDK_VHOST_H
|
|
#define SPDK_VHOST_H
|
|
|
|
#include "spdk/event.h"
|
|
|
|
#define SPDK_VHOST_SCSI_CTRLR_MAX_DEVS 8
|
|
|
|
/**
|
|
* \param event event object. event arg1 is optional path to vhost socket.
|
|
*/
|
|
void spdk_vhost_startup(void *arg1, void *arg2);
|
|
void spdk_vhost_shutdown_cb(void);
|
|
|
|
/* Forward declaration */
|
|
struct spdk_vhost_scsi_ctrlr;
|
|
|
|
/**
|
|
* Get handle to next controller.
|
|
* \param prev Previous controller or NULL to get first one.
|
|
* \return handle to next controller ot NULL if prev was the last one.
|
|
*/
|
|
struct spdk_vhost_scsi_ctrlr *spdk_vhost_scsi_ctrlr_next(struct spdk_vhost_scsi_ctrlr *prev);
|
|
|
|
const char *spdk_vhost_scsi_ctrlr_get_name(struct spdk_vhost_scsi_ctrlr *ctrl);
|
|
uint64_t spdk_vhost_scsi_ctrlr_get_cpumask(struct spdk_vhost_scsi_ctrlr *ctrl);
|
|
int spdk_vhost_scsi_ctrlr_construct(const char *name, uint64_t cpumask);
|
|
int spdk_vhost_parse_core_mask(const char *mask, uint64_t *cpumask);
|
|
struct spdk_scsi_dev *spdk_vhost_scsi_ctrlr_get_dev(struct spdk_vhost_scsi_ctrlr *ctrl,
|
|
uint8_t num);
|
|
int spdk_vhost_scsi_ctrlr_add_dev(const char *name, unsigned scsi_dev_num, const char *lun_name);
|
|
|
|
#endif /* SPDK_VHOST_H */
|