/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_BLK_INTEGRITY_H#define _LINUX_BLK_INTEGRITY_H #include <linux/blk-mq.h>#include <linux/bio-integrity.h> struct request; enum blk_integrity_flags {	BLK_INTEGRITY_NOVERIFY		= 1 << 0,	BLK_INTEGRITY_NOGENERATE	= 1 << 1,	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,	BLK_INTEGRITY_REF_TAG		= 1 << 3,	BLK_INTEGRITY_STACKED		= 1 << 4,}; const char *blk_integrity_profile_name(struct blk_integrity *bi);bool queue_limits_stack_integrity(struct queue_limits *t,		struct queue_limits *b);static inline bool queue_limits_stack_integrity_bdev(struct queue_limits *t,		struct block_device *bdev){	return queue_limits_stack_integrity(t, &bdev->bd_disk->queue->limits);} #ifdef CONFIG_BLK_DEV_INTEGRITYint blk_rq_map_integrity_sg(struct request_queue *, struct bio *,				   struct scatterlist *);int blk_rq_count_integrity_sg(struct request_queue *, struct bio *); static inline boolblk_integrity_queue_supports_integrity(struct request_queue *q){	return q->limits.integrity.tuple_size;} static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk){	if (!blk_integrity_queue_supports_integrity(disk->queue))		return NULL;	return &disk->queue->limits.integrity;} static inline struct blk_integrity *bdev_get_integrity(struct block_device *bdev){	return blk_get_integrity(bdev->bd_disk);} static inline unsigned shortqueue_max_integrity_segments(const struct request_queue *q){	return q->limits.max_integrity_segments;} /** * bio_integrity_intervals - Return number of integrity intervals for a bio * @bi:		blk_integrity profile for device * @sectors:	Size of the bio in 512-byte sectors * * Description: The block layer calculates everything in 512 byte * sectors but integrity metadata is done in terms of the data integrity * interval size of the storage device.  Convert the block layer sectors * to the appropriate number of integrity intervals. */static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,						   unsigned int sectors){	return sectors >> (bi->interval_exp - 9);} static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,					       unsigned int sectors){	return bio_integrity_intervals(bi, sectors) * bi->tuple_size;} static inline bool blk_integrity_rq(struct request *rq){	return rq->cmd_flags & REQ_INTEGRITY;} /* * Return the current bvec that contains the integrity data. bip_iter may be * advanced to iterate over the integrity data. */static inline struct bio_vec rq_integrity_vec(struct request *rq){	return mp_bvec_iter_bvec(rq->bio->bi_integrity->bip_vec,				 rq->bio->bi_integrity->bip_iter);}#else /* CONFIG_BLK_DEV_INTEGRITY */static inline int blk_rq_count_integrity_sg(struct request_queue *q,					    struct bio *b){	return 0;}static inline int blk_rq_map_integrity_sg(struct request_queue *q,					  struct bio *b,					  struct scatterlist *s){	return 0;}static inline struct blk_integrity *bdev_get_integrity(struct block_device *b){	return NULL;}static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk){	return NULL;}static inline boolblk_integrity_queue_supports_integrity(struct request_queue *q){	return false;}static inline unsigned shortqueue_max_integrity_segments(const struct request_queue *q){	return 0;} static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,						   unsigned int sectors){	return 0;} static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,					       unsigned int sectors){	return 0;}static inline int blk_integrity_rq(struct request *rq){	return 0;} static inline struct bio_vec rq_integrity_vec(struct request *rq){	/* the optimizer will remove all calls to this function */	return (struct bio_vec){ };}#endif /* CONFIG_BLK_DEV_INTEGRITY */ #endif /* _LINUX_BLK_INTEGRITY_H */