include/uapi/linux/hsi/cs-protocol.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/hsi/cs-protocol.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/hsi/cs-protocol.h
Extension
.h
Size
3003 bytes
Lines
107
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 cs_buffer_config {
	__u32 rx_bufs;	/* number of RX buffer slots */
	__u32 tx_bufs;	/* number of TX buffer slots */
	__u32 buf_size;	/* bytes */
	__u32 flags;	/* see CS_FEAT_* */
	__u32 reserved[4];
};

/*
 * struct for monotonic timestamp taken when the
 * last control command was received
 */
struct cs_timestamp {
	__u32 tv_sec;  /* seconds */
	__u32 tv_nsec; /* nanoseconds */
};

/*
 * Struct describing the layout and contents of the driver mmap area.
 * This information is meant as read-only information for the application.
 */
struct cs_mmap_config_block {
	__u32 reserved1;
	__u32 buf_size;		/* 0=disabled, otherwise the transfer size */
	__u32 rx_bufs;		/* # of RX buffers */
	__u32 tx_bufs;		/* # of TX buffers */
	__u32 reserved2;
	/* array of offsets within the mmap area for each RX and TX buffer */
	__u32 rx_offsets[CS_MAX_BUFFERS];
	__u32 tx_offsets[CS_MAX_BUFFERS];
	__u32 rx_ptr;
	__u32 rx_ptr_boundary;
	__u32 reserved3[2];
	/* enabled with CS_FEAT_TSTAMP_RX_CTRL */
	struct cs_timestamp tstamp_rx_ctrl;
};

#define CS_IO_MAGIC		'C'

#define CS_IOW(num, dtype)	_IOW(CS_IO_MAGIC, num, dtype)
#define CS_IOR(num, dtype)	_IOR(CS_IO_MAGIC, num, dtype)
#define CS_IOWR(num, dtype)	_IOWR(CS_IO_MAGIC, num, dtype)
#define CS_IO(num)		_IO(CS_IO_MAGIC, num)

#define CS_GET_STATE		CS_IOR(21, unsigned int)
#define CS_SET_WAKELINE		CS_IOW(23, unsigned int)
#define CS_GET_IF_VERSION	CS_IOR(30, unsigned int)
#define CS_CONFIG_BUFS		CS_IOW(31, struct cs_buffer_config)

#endif /* _CS_PROTOCOL_H */

Annotation

Implementation Notes