Commit 33376dd1 authored by Ben Walker's avatar Ben Walker
Browse files

nvmf: Add subsystem iterators 



Add functions to iterate the list of subsystems for a given
target.

Change-Id: Id3831f656033092224168b353788ae87238bf800
Signed-off-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/388294


Reviewed-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent 8b79ef33

include/spdk/nvmf.h

+10 −0
Original line number Diff line number Diff line
@@ -148,6 +148,16 @@ struct spdk_nvmf_subsystem *spdk_nvmf_create_subsystem(struct spdk_nvmf_tgt *tgt 
struct spdk_nvmf_subsystem *spdk_nvmf_tgt_find_subsystem(struct spdk_nvmf_tgt *tgt,

		const char *subnqn);



/**

 * Begin iterating over all known subsystems. If no subsystems are present, return NULL.

 */

struct spdk_nvmf_subsystem *spdk_nvmf_subsystem_get_first(struct spdk_nvmf_tgt *tgt);



/**

 * Continue iterating over all known subsystems. If no additional subsystems, return NULL.

 */

struct spdk_nvmf_subsystem *spdk_nvmf_subsystem_get_next(struct spdk_nvmf_subsystem *subsystem);



void spdk_nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem);



/**

lib/nvmf/subsystem.c

+37 −0
Original line number Diff line number Diff line
@@ -242,6 +242,43 @@ spdk_nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem) 
			      spdk_nvmf_subsystem_delete_done);

}



struct spdk_nvmf_subsystem *

spdk_nvmf_subsystem_get_first(struct spdk_nvmf_tgt *tgt)

{

	struct spdk_nvmf_subsystem	*subsystem;

	uint32_t sid;



	for (sid = 0; sid < tgt->max_sid; sid++) {

		subsystem = tgt->subsystems[sid];

		if (subsystem) {

			return subsystem;

		}

	}



	return NULL;

}



struct spdk_nvmf_subsystem *

spdk_nvmf_subsystem_get_next(struct spdk_nvmf_subsystem *subsystem)

{

	uint32_t sid;

	struct spdk_nvmf_tgt *tgt;



	if (!subsystem) {

		return NULL;

	}



	tgt = subsystem->tgt;



	for (sid = subsystem->id + 1; sid < tgt->max_sid; sid++) {

		subsystem = tgt->subsystems[sid];

		if (subsystem) {

			return subsystem;

		}

	}



	return NULL;

}



int

spdk_nvmf_subsystem_add_host(struct spdk_nvmf_subsystem *subsystem, const char *hostnqn)