mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-04-29 03:57:08 +03:00
Alex Rønne Petersen
132 lines
3.1 KiB
C
Vendored
132 lines
3.1 KiB
C
Vendored
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022-2024 Chelsio Communications, Inc.
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* Written by: John Baldwin <jhb@FreeBSD.org>
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*/
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#ifndef __NVMF_H__
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#define __NVMF_H__
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#include <sys/ioccom.h>
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#ifndef _KERNEL
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#include <stdbool.h>
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#endif
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/*
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* Default settings in Fabrics controllers. These match values used by the
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* Linux target.
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*/
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#define NVMF_MAX_IO_ENTRIES (1024)
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#define NVMF_CC_EN_TIMEOUT (15) /* In 500ms units */
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/* Allows for a 16k data buffer + SQE */
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#define NVMF_IOCCSZ (sizeof(struct nvme_command) + 16 * 1024)
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#define NVMF_IORCSZ (sizeof(struct nvme_completion))
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#define NVMF_NN (1024)
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/*
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* Default timeouts for Fabrics hosts. These match values used by
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* Linux.
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*/
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#define NVMF_DEFAULT_RECONNECT_DELAY 10
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#define NVMF_DEFAULT_CONTROLLER_LOSS 600
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/*
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* (data, size) is the userspace buffer for a packed nvlist.
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*
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* For requests that copyout an nvlist, len is the amount of data
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* copied out to *data. If size is zero, no data is copied and len is
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* set to the required buffer size.
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*/
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struct nvmf_ioc_nv {
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void *data;
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size_t len;
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size_t size;
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};
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/*
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* The fields in a qpair handoff nvlist are:
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*
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* Transport independent:
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*
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* bool admin
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* bool sq_flow_control
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* number qsize
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* number sqhd
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* number sqtail host only
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*
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* TCP transport:
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*
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* number fd
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* number rxpda
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* number txpda
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* bool header_digests
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* bool data_digests
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* number maxr2t
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* number maxh2cdata
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* number max_icd
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*/
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/*
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* The fields in the nvlist for NVMF_HANDOFF_HOST and
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* NVMF_RECONNECT_HOST are:
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*
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* number trtype
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* number kato (optional)
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* number reconnect_delay (optional)
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* number controller_loss_timeout (optional)
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* qpair handoff nvlist admin
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* qpair handoff nvlist array io
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* binary cdata struct nvme_controller_data
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* NVMF_RECONNECT_PARAMS nvlist rparams
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*/
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/*
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* The fields in the nvlist for NVMF_RECONNECT_PARAMS are:
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*
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* binary dle struct nvme_discovery_log_entry
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* string hostnqn
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* number num_io_queues
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* number kato (optional)
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* number reconnect_delay (optional)
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* number controller_loss_timeout (optional)
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* number io_qsize
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* bool sq_flow_control
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*
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* TCP transport:
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*
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* bool header_digests
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* bool data_digests
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*/
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/*
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* The fields in the nvlist for NVMF_CONNECTION_STATUS are:
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*
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* bool connected
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* timespec nvlist last_disconnect
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* number tv_sec
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* number tv_nsec
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*/
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/*
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* The fields in the nvlist for handing off a controller qpair are:
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*
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* number trtype
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* qpair handoff nvlist params
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* binary cmd struct nvmf_fabric_connect_cmd
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* binary data struct nvmf_fabric_connect_data
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*/
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/* Operations on /dev/nvmf */
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#define NVMF_HANDOFF_HOST _IOW('n', 200, struct nvmf_ioc_nv)
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#define NVMF_DISCONNECT_HOST _IOW('n', 201, const char *)
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#define NVMF_DISCONNECT_ALL _IO('n', 202)
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/* Operations on /dev/nvmeX */
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#define NVMF_RECONNECT_PARAMS _IOWR('n', 203, struct nvmf_ioc_nv)
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#define NVMF_RECONNECT_HOST _IOW('n', 204, struct nvmf_ioc_nv)
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#define NVMF_CONNECTION_STATUS _IOWR('n', 205, struct nvmf_ioc_nv)
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#endif /* !__NVMF_H__ */ |