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
37  * enum nvmf_parsing_opts - used to define the sysfs parsing options used.
72  * struct nvmf_ctrl_options - Used to hold the options specified
77  *		the controller, (-1) means reconnect forever, zero means remove
84  * @traddr:	The transport-specific TRADDR field for a port on the
86  * @trsvcid:	The transport-specific TRSVCID field for a port on the
88  * @host_traddr: A transport-specific field identifying the NVME host port
90  * @host_iface: A transport-specific field identifying the NVME host
95  * @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN.
96  * @kato:	Keep-alive timeout.
98  * @dhchap_secret: DH-HMAC-CHAP secret
99  * @dhchap_ctrl_secret: DH-HMAC-CHAP controller secret for bi-directional
143  * struct nvmf_transport_ops - used to register a specific
146  *			registration entry to its linked-list internal tree.
147  * @module:             Transport module reference
149  * @required_opts:	sysfs command-line options that must be specified
151  * @allowed_opts:	sysfs command-line options that can be specified
153  * @create_ctrl():	function pointer that points to a non-NVMe
154  *			implementation-specific fabric technology
164  *	   modules .bss section so that a pure module_get on @module
169 	struct module		*module;  member
178 nvmf_ctlr_matches_baseopts(struct nvme_ctrl *ctrl,  in nvmf_ctlr_matches_baseopts()  argument
181 	enum nvme_ctrl_state state = nvme_ctrl_state(ctrl);  in nvmf_ctlr_matches_baseopts()
186 	    strcmp(opts->subsysnqn, ctrl->opts->subsysnqn) ||  in nvmf_ctlr_matches_baseopts()
187 	    strcmp(opts->host->nqn, ctrl->opts->host->nqn) ||  in nvmf_ctlr_matches_baseopts()
188 	    !uuid_equal(&opts->host->id, &ctrl->opts->host->id))  in nvmf_ctlr_matches_baseopts()
194 static inline char *nvmf_ctrl_subsysnqn(struct nvme_ctrl *ctrl)  in nvmf_ctrl_subsysnqn()  argument
196 	if (!ctrl->subsys ||  in nvmf_ctrl_subsysnqn()
197 	    !strcmp(ctrl->opts->subsysnqn, NVME_DISC_SUBSYS_NAME))  in nvmf_ctrl_subsysnqn()
198 		return ctrl->opts->subsysnqn;  in nvmf_ctrl_subsysnqn()
199 	return ctrl->subsys->subnqn;  in nvmf_ctrl_subsysnqn()
205 		nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;  in nvmf_complete_timed_out_request()
212 	return min(opts->nr_io_queues, num_online_cpus()) +  in nvmf_nr_io_queues()
213 		min(opts->nr_write_queues, num_online_cpus()) +  in nvmf_nr_io_queues()
214 		min(opts->nr_poll_queues, num_online_cpus());  in nvmf_nr_io_queues()
217 int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val);
218 int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val);
219 int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val);
220 int nvmf_subsystem_reset(struct nvme_ctrl *ctrl);
221 int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl);
222 int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid);
226 int nvmf_get_address(struct nvme_ctrl *ctrl, char *buf, int size);
227 bool nvmf_should_reconnect(struct nvme_ctrl *ctrl, int status);
228 bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
232 void nvmf_map_queues(struct blk_mq_tag_set *set, struct nvme_ctrl *ctrl,