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- discover: Connects to a remote Discovery controller, fetches its Discovery Log Page, and enumerates the remote controllers described in the log page. The -v option can be used to display the Identify Controller data structure for the Discovery controller. This is only really useful for debugging. - connect: Connects to a remote I/O controller and establishes an association of an admin queue and a single I/O queue. The association is handed off to the in-kernel host to create a new nvmeX device. - connect-all: Connects to a Discovery controller and attempts to create an association with each I/O controller enumerated in the Discovery controller's Discovery Log Page. - reconnect: Establishes a new association with a remote I/O controller for an existing nvmeX device. This can be used to restore access to a remote I/O controller after the loss of a prior association due to a transport error, controller reboot, etc. - disconnect: Deletes one or more nvmeX devices after detaching its namespaces and terminating any active associations. The devices to delete can be identified by either a nvmeX device name or the NQN of the remote controller. - disconnect-all: Deletes all active associations with remote controllers. Reviewed by: imp Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D44715
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023-2024 Chelsio Communications, Inc.
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* Written by: John Baldwin <jhb@FreeBSD.org>
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*/
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#ifndef __FABRICS_H__
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#define __FABRICS_H__
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/*
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* Splits 'in_address' into separate 'address' and 'port' strings. If
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* a separate buffer for the address was allocated, 'tofree' is set to
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* the allocated buffer, otherwise 'tofree' is set to NULL.
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*/
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void nvmf_parse_address(const char *in_address, const char **address,
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const char **port, char **tofree);
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uint16_t nvmf_parse_cntlid(const char *cntlid);
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/* Returns true if able to open a connection. */
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bool tcp_qpair_params(struct nvmf_qpair_params *params, int adrfam,
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const char *address, const char *port);
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/* Connect to a discovery controller and return the Admin qpair. */
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struct nvmf_qpair *connect_discovery_adminq(enum nvmf_trtype trtype,
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const char *address, const char *port, const char *hostnqn);
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/*
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* Connect to an NVM controller establishing an Admin qpair and one or
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* more I/O qpairs. The controller's controller data is returned in
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* *cdata on success. Returns a non-zero value from <sysexits.h> on
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* failure.
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*/
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int connect_nvm_queues(const struct nvmf_association_params *aparams,
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enum nvmf_trtype trtype, int adrfam, const char *address,
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const char *port, uint16_t cntlid, const char *subnqn, const char *hostnqn,
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uint32_t kato, struct nvmf_qpair **admin, struct nvmf_qpair **io,
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u_int num_io_queues, u_int queue_size, struct nvme_controller_data *cdata);
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#endif /* !__FABRICS_H__ */
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