nvmf_disc_log_entry

NAME

struct nvmf_disc_log_entry - Discovery Log Page entry

struct nvmf_disc_log_entry {

__u8 trtype;

__u8 adrfam;

__u8 subtype;

__u8 treq;

__le16 portid;

__le16 cntlid;

__le16 asqsz;

__le16 eflags;

__u8 rsvd12[20];

char trsvcid[NVMF_TRSVCID_SIZE];

__u8 rsvd64[192];

char subnqn[NVME_NQN_LENGTH];

char traddr[NVMF_TRADDR_SIZE];

union nvmf_tsas tsas;

};

trtype: Transport Type (TRTYPE): Specifies the NVMe Transport type. See enum nvmf_trtype.

adrfam: Address Family (ADRFAM): Specifies the address family. See enum nvmf_addr_family.

subtype: Subsystem Type (SUBTYPE): Specifies the type of the NVM subsystem that is indicated in this entry. See enum nvme_subsys_type.

treq: Transport Requirements (TREQ): Indicates requirements for the NVMe Transport. See enum nvmf_treq.

portid: Port ID (PORTID): Specifies a particular NVM subsystem port. Different NVMe Transports or address families may utilize the same Port ID value (e.g. a Port ID may support both iWARP and RoCE).

cntlid: Controller ID (CNTLID): Specifies the controller ID. If the NVM subsystem uses a dynamic controller model, then this field shall be set to FFFFh. If the NVM subsystem uses a static controller model, then this field may be set to a specific controller ID (values 0h to FFEFh are valid). If the NVM subsystem uses a static controller model and the value indicated is FFFEh, then the host should remember the Controller ID returned as part of the Fabrics Connect command in order to re-establish an association in the future with the same controller.

asqsz: Admin Max SQ Size (ASQSZ): Specifies the maximum size of an Admin Submission Queue. This applies to all controllers in the NVM subsystem. The value shall be a minimum of 32 entries.

eflags: Entry Flags (EFLAGS): Indicates additional information related to the current entry. See enum nvmf_disc_eflags.

trsvcid: Transport Service Identifier (TRSVCID): Specifies the NVMe Transport service identifier as an ASCII string. The NVMe Transport service identifier is specified by the associated NVMe Transport binding specification.

subnqn: NVM Subsystem Qualified Name (SUBNQN): NVMe Qualified Name (NQN) that uniquely identifies the NVM subsystem. For a subsystem, if that Discovery subsystem has a unique NQN (i.e., the NVM Subsystem NVMe Qualified Name (SUBNQN) field in that Discovery subsystem's Identify Controller data structure contains a unique NQN value), then the value returned shall be that unique NQN. If the Discovery subsystem does not have a unique NQN, then the value returned shall be the well-known Discovery Service NQN (nqn.2014-08.org.nvmexpress.discovery).

traddr: Transport Address (TRADDR): Specifies the address of the NVM subsystem that may be used for a Connect command as an ASCII string. The Address Family field describes the reference for parsing this field.

struct nvmf_disc_log_entry

January 2023