include/linux/bsg-lib.h

Source file repositories/reference/linux-study-clean/include/linux/bsg-lib.h

File Facts

System
Linux kernel
Corpus path
include/linux/bsg-lib.h
Extension
.h
Size
1756 bytes
Lines
75
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 bsg_buffer {
	unsigned int payload_len;
	int sg_cnt;
	struct scatterlist *sg_list;
};

struct bsg_job {
	struct device *dev;

	struct kref kref;

	unsigned int timeout;

	/* Transport/driver specific request/reply structs */
	void *request;
	void *reply;

	unsigned int request_len;
	unsigned int reply_len;
	/*
	 * On entry : reply_len indicates the buffer size allocated for
	 * the reply.
	 *
	 * Upon completion : the message handler must set reply_len
	 *  to indicates the size of the reply to be returned to the
	 *  caller.
	 */

	/* DMA payloads for the request/response */
	struct bsg_buffer request_payload;
	struct bsg_buffer reply_payload;

	int result;
	unsigned int reply_payload_rcv_len;

	/* BIDI support */
	struct request *bidi_rq;
	struct bio *bidi_bio;

	void *dd_data;		/* Used for driver-specific storage */
};

void bsg_job_done(struct bsg_job *job, int result,
		  unsigned int reply_payload_rcv_len);
struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
		struct queue_limits *lim, bsg_job_fn *job_fn,
		bsg_timeout_fn *timeout, int dd_job_size);
void bsg_remove_queue(struct request_queue *q);
void bsg_job_put(struct bsg_job *job);
int __must_check bsg_job_get(struct bsg_job *job);

#endif

Annotation

Implementation Notes