fs/smb/smbdirect/pdu.h

File Facts

System

Linux kernel

Corpus path

fs/smb/smbdirect/pdu.h

Extension

.h

Size

1522 bytes

Lines

60

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct smbdirect_negotiate_req
• struct smbdirect_negotiate_resp
• struct smbdirect_data_transfer

Annotated Snippet

struct smbdirect_negotiate_req {
	__le16 min_version;
	__le16 max_version;
	__le16 reserved;
	__le16 credits_requested;
	__le32 preferred_send_size;
	__le32 max_receive_size;
	__le32 max_fragmented_size;
} __packed;

/* SMBD negotiation response packet [MS-SMBD] 2.2.2 */
struct smbdirect_negotiate_resp {
	__le16 min_version;
	__le16 max_version;
	__le16 negotiated_version;
	__le16 reserved;
	__le16 credits_requested;
	__le16 credits_granted;
	__le32 status;
	__le32 max_readwrite_size;
	__le32 preferred_send_size;
	__le32 max_receive_size;
	__le32 max_fragmented_size;
} __packed;

#define SMBDIRECT_DATA_MIN_HDR_SIZE 0x14
#define SMBDIRECT_DATA_OFFSET       0x18

#define SMBDIRECT_FLAG_RESPONSE_REQUESTED 0x0001

/* SMBD data transfer packet with payload [MS-SMBD] 2.2.3 */
struct smbdirect_data_transfer {
	__le16 credits_requested;
	__le16 credits_granted;
	__le16 flags;
	__le16 reserved;
	__le32 remaining_data_length;
	__le32 data_offset;
	__le32 data_length;
	__le32 padding;
	__u8 buffer[];
} __packed;

#endif /* __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__ */

Annotation

• Detected declarations: `struct smbdirect_negotiate_req`, `struct smbdirect_negotiate_resp`, `struct smbdirect_data_transfer`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• 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.