include/uapi/linux/nfc.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/nfc.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/nfc.h
Extension
.h
Size
11351 bytes
Lines
321
Domain
Core OS
Bucket
Core Kernel Interface
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct sockaddr_nfc {
	__kernel_sa_family_t sa_family;
	__u32 dev_idx;
	__u32 target_idx;
	__u32 nfc_protocol;
};

#define NFC_LLCP_MAX_SERVICE_NAME 63
struct sockaddr_nfc_llcp {
	__kernel_sa_family_t sa_family;
	__u32 dev_idx;
	__u32 target_idx;
	__u32 nfc_protocol;
	__u8 dsap; /* Destination SAP, if known */
	__u8 ssap; /* Source SAP to be bound to */
	char service_name[NFC_LLCP_MAX_SERVICE_NAME]; /* Service name URI */;
	__kernel_size_t service_name_len;
};

/* NFC socket protocols */
#define NFC_SOCKPROTO_RAW	0
#define NFC_SOCKPROTO_LLCP	1
#define NFC_SOCKPROTO_MAX	2

#define NFC_HEADER_SIZE 1

/*
 * Pseudo-header info for raw socket packets
 * First byte is the adapter index
 * Second byte contains flags
 *  - 0x01 - Direction (0=RX, 1=TX)
 *  - 0x02-0x04 - Payload type (000=LLCP, 001=NCI, 010=HCI, 011=Digital,
 *                              100=Proprietary)
 *  - 0x05-0x80 - Reserved
 **/
#define NFC_RAW_HEADER_SIZE	2
#define NFC_DIRECTION_RX		0x00
#define NFC_DIRECTION_TX		0x01

#define RAW_PAYLOAD_LLCP 0
#define RAW_PAYLOAD_NCI	1
#define RAW_PAYLOAD_HCI	2
#define RAW_PAYLOAD_DIGITAL	3
#define RAW_PAYLOAD_PROPRIETARY	4

/* socket option names */
#define NFC_LLCP_RW		0
#define NFC_LLCP_MIUX		1
#define NFC_LLCP_REMOTE_MIU	2
#define NFC_LLCP_REMOTE_LTO	3
#define NFC_LLCP_REMOTE_RW	4

#endif /*__LINUX_NFC_H */

Annotation

Implementation Notes