90520634bd
A single I/O may allocate more than one request, since splitting may be necessary to conform to the device's maximum transfer size, PRP list compatibility requirements, or driver-assisted striping. Very big I/O request sent from application may get error due to limited resources in NVMe driver layer, so here we add an optional parameter to make the parameter can be configured by users. Fix issue #745. Change-Id: I7824232c54865b052dcd0ec6e91484c3837fc2c4 Signed-off-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/461182 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
84 lines
3.2 KiB
C
84 lines
3.2 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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#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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enum spdk_bdev_timeout_action {
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SPDK_BDEV_NVME_TIMEOUT_ACTION_NONE = 0,
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SPDK_BDEV_NVME_TIMEOUT_ACTION_RESET,
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SPDK_BDEV_NVME_TIMEOUT_ACTION_ABORT,
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};
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struct spdk_bdev_nvme_opts {
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enum spdk_bdev_timeout_action action_on_timeout;
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uint64_t timeout_us;
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uint32_t retry_count;
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uint64_t nvme_adminq_poll_period_us;
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uint64_t nvme_ioq_poll_period_us;
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uint32_t io_queue_requests;
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};
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typedef void (*spdk_bdev_create_nvme_fn)(void *ctx, int rc);
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struct spdk_nvme_qpair *spdk_bdev_nvme_get_io_qpair(struct spdk_io_channel *ctrlr_io_ch);
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void spdk_bdev_nvme_get_opts(struct spdk_bdev_nvme_opts *opts);
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int spdk_bdev_nvme_set_opts(const struct spdk_bdev_nvme_opts *opts);
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int spdk_bdev_nvme_set_hotplug(bool enabled, uint64_t period_us, spdk_msg_fn cb, void *cb_ctx);
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int spdk_bdev_nvme_create(struct spdk_nvme_transport_id *trid,
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struct spdk_nvme_host_id *hostid,
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const char *base_name,
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const char **names, size_t *count,
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const char *hostnqn,
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uint32_t prchk_flags,
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spdk_bdev_create_nvme_fn cb_fn,
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void *cb_ctx);
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struct spdk_nvme_ctrlr *spdk_bdev_nvme_get_ctrlr(struct spdk_bdev *bdev);
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/**
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* Delete NVMe controller with all bdevs on top of it.
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* Requires to pass name of NVMe controller.
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*
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* \param name NVMe controller name
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* \return zero on success, -EINVAL on wrong parameters or -ENODEV if controller is not found
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*/
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int spdk_bdev_nvme_delete(const char *name);
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#endif /* SPDK_BDEV_NVME_H */
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