include/uapi/scsi/fc/fc_ns.h

File Facts

System

Linux kernel

Corpus path

include/uapi/scsi/fc/fc_ns.h

Extension

.h

Size

4317 bytes

Lines

197

Domain

Repository Root And Misc

Bucket

include

Inferred role

Repository Root And Misc: implementation source

Status

source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

• Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct fc_ns_pt_obj
• struct fc_ns_fid
• struct fc_ns_fts
• struct fc_ns_ff
• struct fc_ns_gid_pt
• struct fc_ns_gid_ft
• struct fc_gpn_ft_resp
• struct fc_ns_gid_pn
• struct fc_gid_pn_resp
• struct fc_gspn_resp
• struct fc_ns_rft_id
• struct fc_ns_rn_id
• struct fc_ns_rsnn
• struct fc_ns_rspn
• struct fc_ns_rff_id
• enum fc_ns_req
• enum fc_ns_pt

Annotated Snippet

struct fc_ns_pt_obj {
	__u8		pt_type;
};

/*
 * Port ID object
 */
struct fc_ns_fid {
	__u8		fp_flags;	/* flags for responses only */
	__u8		fp_fid[3];
};

/*
 * fp_flags in port ID object, for responses only.
 */
#define	FC_NS_FID_LAST	0x80		/* last object */

/*
 * FC4-types object.
 */
#define	FC_NS_TYPES	256	/* number of possible FC-4 types */
#define	FC_NS_BPW	32	/* bits per word in bitmap */

struct fc_ns_fts {
	__be32	ff_type_map[FC_NS_TYPES / FC_NS_BPW]; /* bitmap of FC-4 types */
};

/*
 * FC4-features object.
 */
struct fc_ns_ff	{
	__be32	fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
};

/*
 * GID_PT request.
 */
struct fc_ns_gid_pt {
	__u8		fn_pt_type;
	__u8		fn_domain_id_scope;
	__u8		fn_area_id_scope;
	__u8		fn_resvd;
};

/*
 * GID_FT or GPN_FT request.
 */
struct fc_ns_gid_ft {
	__u8		fn_resvd;
	__u8		fn_domain_id_scope;
	__u8		fn_area_id_scope;
	__u8		fn_fc4_type;
};

/*
 * GPN_FT response.
 */
struct fc_gpn_ft_resp {
	__u8		fp_flags;	/* see fp_flags definitions above */
	__u8		fp_fid[3];	/* port ID */
	__be32		fp_resvd;
	__be64		fp_wwpn;	/* port name */
};

/*
 * GID_PN request
 */
struct fc_ns_gid_pn {
	__be64     fn_wwpn;    /* port name */
};

/*
 * GID_PN response or GSPN_ID request
 */
struct fc_gid_pn_resp {
	__u8      fp_resvd;
	__u8      fp_fid[3];     /* port ID */
};

/*
 * GSPN_ID response
 */
struct fc_gspn_resp {
	__u8	fp_name_len;
	char	fp_name[];
};

/*
 * RFT_ID request - register FC-4 types for ID.
 */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct fc_ns_pt_obj`, `struct fc_ns_fid`, `struct fc_ns_fts`, `struct fc_ns_ff`, `struct fc_ns_gid_pt`, `struct fc_ns_gid_ft`, `struct fc_gpn_ft_resp`, `struct fc_ns_gid_pn`, `struct fc_gid_pn_resp`, `struct fc_gspn_resp`.
• Atlas domain: Repository Root And Misc / include.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.