nvme/host/fabrics.h

1 /* SPDX-License-Identifier: GPL-2.0 */
4  * Copyright (c) 2015-2016 HGST, a Western Digital Company.
18 /* default is -1: the fail fast mechanism is disabled  */
19 #define NVMF_DEF_FAIL_FAST_TMO		-1
44  * enum nvmf_parsing_opts - used to define the sysfs parsing options used.
79  * struct nvmf_ctrl_options - Used to hold the options specified
82  *		on adding a NVMe controller.
84  *		the controller, (-1) means reconnect forever, zero means remove
87  *		better description) that will be used by an NVMe controller
91  * @traddr:	The transport-specific TRADDR field for a port on the
92  *              subsystem which is adding a controller.
93  * @trsvcid:	The transport-specific TRSVCID field for a port on the
94  *              subsystem which is adding a controller.
95  * @host_traddr: A transport-specific field identifying the NVME host port
96  *     to use for the connection to the controller.
97  * @host_iface: A transport-specific field identifying the NVME host
98  *     interface to use for the connection to the controller.
100  * @nr_io_queues: Number of controller IO queues that will be established.
102  * @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN.
103  * @kato:	Keep-alive timeout.
105  * @dhchap_secret: DH-HMAC-CHAP secret
106  * @dhchap_ctrl_secret: DH-HMAC-CHAP controller secret for bi-directional
111  * @disable_sqflow: disable controller sq flow control
150  * struct nvmf_transport_ops - used to register a specific
153  *			registration entry to its linked-list internal tree.
156  * @required_opts:	sysfs command-line options that must be specified
157  *			when adding a new NVMe controller.
158  * @allowed_opts:	sysfs command-line options that can be specified
159  *			when adding a new NVMe controller.
160  * @create_ctrl():	function pointer that points to a non-NVMe
161  *			implementation-specific fabric technology
163  *			for the purpose of conneciton to an NVMe controller
193 	    strcmp(opts->subsysnqn, ctrl->opts->subsysnqn) ||  in nvmf_ctlr_matches_baseopts()
194 	    strcmp(opts->host->nqn, ctrl->opts->host->nqn) ||  in nvmf_ctlr_matches_baseopts()
195 	    !uuid_equal(&opts->host->id, &ctrl->opts->host->id))  in nvmf_ctlr_matches_baseopts()
203 	if (!ctrl->subsys ||  in nvmf_ctrl_subsysnqn()
204 	    !strcmp(ctrl->opts->subsysnqn, NVME_DISC_SUBSYS_NAME))  in nvmf_ctrl_subsysnqn()
205 		return ctrl->opts->subsysnqn;  in nvmf_ctrl_subsysnqn()
206 	return ctrl->subsys->subnqn;  in nvmf_ctrl_subsysnqn()
212 		nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;  in nvmf_complete_timed_out_request()
219 	return min(opts->nr_io_queues, num_online_cpus()) +  in nvmf_nr_io_queues()
220 		min(opts->nr_write_queues, num_online_cpus()) +  in nvmf_nr_io_queues()
221 		min(opts->nr_poll_queues, num_online_cpus());  in nvmf_nr_io_queues()