/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_BIO_INTEGRITY_H#define _LINUX_BIO_INTEGRITY_H #include <linux/bio.h> enum bip_flags {	BIP_BLOCK_INTEGRITY	= 1 << 0, /* block layer owns integrity data */	BIP_MAPPED_INTEGRITY	= 1 << 1, /* ref tag has been remapped */	BIP_DISK_NOCHECK	= 1 << 2, /* disable disk integrity checking */	BIP_IP_CHECKSUM		= 1 << 3, /* IP checksum */	BIP_COPY_USER		= 1 << 4, /* Kernel bounce buffer in use */	BIP_CHECK_GUARD		= 1 << 5, /* guard check */	BIP_CHECK_REFTAG	= 1 << 6, /* reftag check */	BIP_CHECK_APPTAG	= 1 << 7, /* apptag check */	BIP_P2P_DMA		= 1 << 8, /* using P2P address */}; struct bio_integrity_payload {	struct bvec_iter	bip_iter; 	unsigned short		bip_vcnt;	/* # of integrity bio_vecs */	unsigned short		bip_max_vcnt;	/* integrity bio_vec slots */	unsigned short		bip_flags;	/* control flags */	u16			app_tag;	/* application tag value */ 	struct bio_vec		*bip_vec;}; #define BIP_CLONE_FLAGS (BIP_MAPPED_INTEGRITY | BIP_IP_CHECKSUM | \			 BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG) #ifdef CONFIG_BLK_DEV_INTEGRITY #define bip_for_each_vec(bvl, bip, iter)				\	for_each_bvec(bvl, (bip)->bip_vec, iter, (bip)->bip_iter) #define bio_for_each_integrity_vec(_bvl, _bio, _iter)			\	for_each_bio(_bio)						\		bip_for_each_vec(_bvl, _bio->bi_integrity, _iter) static inline struct bio_integrity_payload *bio_integrity(struct bio *bio){	if (bio->bi_opf & REQ_INTEGRITY)		return bio->bi_integrity; 	return NULL;} static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag){	struct bio_integrity_payload *bip = bio_integrity(bio); 	if (bip)		return bip->bip_flags & flag; 	return false;} static inline sector_t bip_get_seed(struct bio_integrity_payload *bip){	return bip->bip_iter.bi_sector;} static inline void bip_set_seed(struct bio_integrity_payload *bip,				sector_t seed){	bip->bip_iter.bi_sector = seed;} void bio_integrity_init(struct bio *bio, struct bio_integrity_payload *bip,		struct bio_vec *bvecs, unsigned int nr_vecs);struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, gfp_t gfp,		unsigned int nr);int bio_integrity_add_page(struct bio *bio, struct page *page, unsigned int len,		unsigned int offset);int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter);int bio_integrity_map_iter(struct bio *bio, struct uio_meta *meta);void bio_integrity_unmap_user(struct bio *bio);bool bio_integrity_prep(struct bio *bio);void bio_integrity_advance(struct bio *bio, unsigned int bytes_done);void bio_integrity_trim(struct bio *bio);int bio_integrity_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp_mask); #else /* CONFIG_BLK_DEV_INTEGRITY */ static inline struct bio_integrity_payload *bio_integrity(struct bio *bio){	return NULL;} static inline int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter){	return -EINVAL;} static inline int bio_integrity_map_iter(struct bio *bio, struct uio_meta *meta){	return -EINVAL;} static inline void bio_integrity_unmap_user(struct bio *bio){} static inline bool bio_integrity_prep(struct bio *bio){	return true;} static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,		gfp_t gfp_mask){	return 0;} static inline void bio_integrity_advance(struct bio *bio,		unsigned int bytes_done){} static inline void bio_integrity_trim(struct bio *bio){} static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag){	return false;} static inline struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, gfp_t gfp, unsigned int nr){	return ERR_PTR(-EINVAL);} static inline int bio_integrity_add_page(struct bio *bio, struct page *page,					unsigned int len, unsigned int offset){	return 0;}#endif /* CONFIG_BLK_DEV_INTEGRITY */#endif /* _LINUX_BIO_INTEGRITY_H */