Since the number of Namespaces for each NVMe controller will not change during the lifetime, and each Namespace will only construct one block device, For the purpose to support NS attribute event in bdev_nvme module, using arrayed data structure makes the implementation much easier. Change-Id: Ia3a64cd1e8d59937f0c91daaee9c5bd28708402b Signed-off-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-on: https://review.gerrithub.io/415115 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> Reviewed-by: Jim Harris <james.r.harris@intel.com>
79 lines
2.7 KiB
C
79 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_BDEV_NVME_H
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#define SPDK_BDEV_NVME_H
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#include "spdk/stdinc.h"
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#include "spdk/queue.h"
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#include "spdk/nvme.h"
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#include "spdk/bdev_module.h"
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#define NVME_MAX_CONTROLLERS 1024
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struct nvme_ctrlr {
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/**
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* points to pinned, physically contiguous memory region;
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* contains 4KB IDENTIFY structure for controller which is
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* target for CONTROLLER IDENTIFY command during initialization
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*/
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struct spdk_nvme_ctrlr *ctrlr;
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struct spdk_nvme_transport_id trid;
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char *name;
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int ref;
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uint32_t num_ns;
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/** Array of bdevs indexed by nsid - 1 */
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struct nvme_bdev *bdevs;
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struct spdk_poller *adminq_timer_poller;
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/** linked list pointer for device list */
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TAILQ_ENTRY(nvme_ctrlr) tailq;
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};
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struct nvme_bdev {
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struct spdk_bdev disk;
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struct nvme_ctrlr *nvme_ctrlr;
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uint32_t id;
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bool active;
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struct spdk_nvme_ns *ns;
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};
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int spdk_bdev_nvme_create(struct spdk_nvme_transport_id *trid,
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const char *base_name,
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const char **names, size_t *count);
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struct spdk_nvme_ctrlr *spdk_bdev_nvme_get_ctrlr(struct spdk_bdev *bdev);
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#endif // SPDK_BDEV_NVME_H
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