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https://github.com/torvalds/linux.git
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block: split integrity support out of bio.h
Split struct bio_integrity_payload and the related prototypes out of bio.h into a separate bio-integrity.h header so that it is only pulled in by the few places that need it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Anuj Gupta <anuj20.g@samsung.com> Reviewed-by: Kanchan Joshi <joshi.k@samsung.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20240702151047.1746127-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
Jens Axboe
parent
1a50d14670
commit
da042a3655
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@ -4,7 +4,7 @@
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*/
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#include <linux/mm.h>
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#include <linux/swap.h>
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#include <linux/bio.h>
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#include <linux/bio-integrity.h>
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#include <linux/blkdev.h>
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#include <linux/uio.h>
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#include <linux/iocontext.h>
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@ -2,6 +2,7 @@
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#ifndef BLK_INTERNAL_H
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#define BLK_INTERNAL_H
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#include <linux/bio-integrity.h>
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#include <linux/blk-crypto.h>
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#include <linux/memblock.h> /* for max_pfn/max_low_pfn */
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#include <linux/sched/sysctl.h>
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@ -10,7 +10,7 @@
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#include <linux/export.h>
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#include <linux/swap.h>
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#include <linux/gfp.h>
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#include <linux/bio.h>
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#include <linux/bio-integrity.h>
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#include <linux/pagemap.h>
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#include <linux/mempool.h>
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#include <linux/blkdev.h>
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@ -11,6 +11,7 @@
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#include "dm-uevent.h"
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#include "dm-ima.h"
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#include <linux/bio-integrity.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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@ -3,6 +3,7 @@
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* Copyright (c) 2011-2014, Intel Corporation.
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* Copyright (c) 2017-2021 Christoph Hellwig.
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*/
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#include <linux/bio-integrity.h>
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#include <linux/ptrace.h> /* for force_successful_syscall_return */
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#include <linux/nvme_ioctl.h>
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#include <linux/io_uring/cmd.h>
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@ -33,11 +33,12 @@
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* than the level indicated above to trigger output.
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*/
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#include <linux/bio-integrity.h>
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/bio.h>
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#include <linux/bio-integrity.h>
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#include <linux/hdreg.h>
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#include <linux/errno.h>
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#include <linux/idr.h>
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153
include/linux/bio-integrity.h
Normal file
153
include/linux/bio-integrity.h
Normal file
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@ -0,0 +1,153 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_BIO_INTEGRITY_H
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#define _LINUX_BIO_INTEGRITY_H
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#include <linux/bio.h>
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enum bip_flags {
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BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
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BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
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BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */
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BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */
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BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */
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BIP_INTEGRITY_USER = 1 << 5, /* Integrity payload is user address */
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BIP_COPY_USER = 1 << 6, /* Kernel bounce buffer in use */
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};
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struct bio_integrity_payload {
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struct bio *bip_bio; /* parent bio */
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struct bvec_iter bip_iter;
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unsigned short bip_vcnt; /* # of integrity bio_vecs */
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unsigned short bip_max_vcnt; /* integrity bio_vec slots */
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unsigned short bip_flags; /* control flags */
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struct bvec_iter bio_iter; /* for rewinding parent bio */
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struct work_struct bip_work; /* I/O completion */
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struct bio_vec *bip_vec;
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struct bio_vec bip_inline_vecs[];/* embedded bvec array */
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};
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#ifdef CONFIG_BLK_DEV_INTEGRITY
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#define bip_for_each_vec(bvl, bip, iter) \
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for_each_bvec(bvl, (bip)->bip_vec, iter, (bip)->bip_iter)
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#define bio_for_each_integrity_vec(_bvl, _bio, _iter) \
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for_each_bio(_bio) \
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bip_for_each_vec(_bvl, _bio->bi_integrity, _iter)
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static inline struct bio_integrity_payload *bio_integrity(struct bio *bio)
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{
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if (bio->bi_opf & REQ_INTEGRITY)
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return bio->bi_integrity;
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return NULL;
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}
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static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag)
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{
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struct bio_integrity_payload *bip = bio_integrity(bio);
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if (bip)
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return bip->bip_flags & flag;
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return false;
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}
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static inline sector_t bip_get_seed(struct bio_integrity_payload *bip)
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{
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return bip->bip_iter.bi_sector;
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}
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static inline void bip_set_seed(struct bio_integrity_payload *bip,
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sector_t seed)
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{
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bip->bip_iter.bi_sector = seed;
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}
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struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, gfp_t gfp,
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unsigned int nr);
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int bio_integrity_add_page(struct bio *bio, struct page *page, unsigned int len,
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unsigned int offset);
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int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len, u32 seed);
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void bio_integrity_unmap_free_user(struct bio *bio);
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bool bio_integrity_prep(struct bio *bio);
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void bio_integrity_advance(struct bio *bio, unsigned int bytes_done);
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void bio_integrity_trim(struct bio *bio);
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int bio_integrity_clone(struct bio *bio, struct bio *bio_src, gfp_t gfp_mask);
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int bioset_integrity_create(struct bio_set *bs, int pool_size);
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void bioset_integrity_free(struct bio_set *bs);
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void bio_integrity_init(void);
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#else /* CONFIG_BLK_DEV_INTEGRITY */
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static inline void *bio_integrity(struct bio *bio)
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{
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return NULL;
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}
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static inline int bioset_integrity_create(struct bio_set *bs, int pool_size)
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{
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return 0;
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}
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static inline void bioset_integrity_free(struct bio_set *bs)
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{
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}
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static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf,
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ssize_t len, u32 seed)
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{
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return -EINVAL;
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}
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static inline void bio_integrity_unmap_free_user(struct bio *bio)
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{
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}
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static inline bool bio_integrity_prep(struct bio *bio)
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{
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return true;
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}
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static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
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gfp_t gfp_mask)
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{
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return 0;
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}
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static inline void bio_integrity_advance(struct bio *bio,
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unsigned int bytes_done)
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{
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}
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static inline void bio_integrity_trim(struct bio *bio)
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{
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}
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static inline void bio_integrity_init(void)
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{
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}
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static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag)
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{
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return false;
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}
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static inline void *bio_integrity_alloc(struct bio *bio, gfp_t gfp,
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unsigned int nr)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline int bio_integrity_add_page(struct bio *bio, struct page *page,
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unsigned int len, unsigned int offset)
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{
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return 0;
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}
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#endif /* CONFIG_BLK_DEV_INTEGRITY */
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#endif /* _LINUX_BIO_INTEGRITY_H */
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@ -321,69 +321,6 @@ static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio)
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#define bio_for_each_folio_all(fi, bio) \
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for (bio_first_folio(&fi, bio, 0); fi.folio; bio_next_folio(&fi, bio))
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enum bip_flags {
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BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
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BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
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BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */
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BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */
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BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */
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BIP_INTEGRITY_USER = 1 << 5, /* Integrity payload is user address */
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BIP_COPY_USER = 1 << 6, /* Kernel bounce buffer in use */
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};
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/*
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* bio integrity payload
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*/
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struct bio_integrity_payload {
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struct bio *bip_bio; /* parent bio */
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struct bvec_iter bip_iter;
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unsigned short bip_vcnt; /* # of integrity bio_vecs */
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unsigned short bip_max_vcnt; /* integrity bio_vec slots */
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unsigned short bip_flags; /* control flags */
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struct bvec_iter bio_iter; /* for rewinding parent bio */
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struct work_struct bip_work; /* I/O completion */
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struct bio_vec *bip_vec;
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struct bio_vec bip_inline_vecs[];/* embedded bvec array */
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};
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#if defined(CONFIG_BLK_DEV_INTEGRITY)
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static inline struct bio_integrity_payload *bio_integrity(struct bio *bio)
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{
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if (bio->bi_opf & REQ_INTEGRITY)
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return bio->bi_integrity;
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return NULL;
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}
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static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag)
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{
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struct bio_integrity_payload *bip = bio_integrity(bio);
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if (bip)
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return bip->bip_flags & flag;
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return false;
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}
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static inline sector_t bip_get_seed(struct bio_integrity_payload *bip)
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{
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return bip->bip_iter.bi_sector;
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}
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static inline void bip_set_seed(struct bio_integrity_payload *bip,
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sector_t seed)
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{
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bip->bip_iter.bi_sector = seed;
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}
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#endif /* CONFIG_BLK_DEV_INTEGRITY */
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void bio_trim(struct bio *bio, sector_t offset, sector_t size);
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extern struct bio *bio_split(struct bio *bio, int sectors,
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gfp_t gfp, struct bio_set *bs);
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@ -721,99 +658,6 @@ static inline bool bioset_initialized(struct bio_set *bs)
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return bs->bio_slab != NULL;
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}
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#if defined(CONFIG_BLK_DEV_INTEGRITY)
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#define bip_for_each_vec(bvl, bip, iter) \
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for_each_bvec(bvl, (bip)->bip_vec, iter, (bip)->bip_iter)
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#define bio_for_each_integrity_vec(_bvl, _bio, _iter) \
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for_each_bio(_bio) \
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bip_for_each_vec(_bvl, _bio->bi_integrity, _iter)
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int bio_integrity_map_user(struct bio *bio, void __user *ubuf, ssize_t len, u32 seed);
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void bio_integrity_unmap_free_user(struct bio *bio);
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extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int);
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extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int);
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extern bool bio_integrity_prep(struct bio *);
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extern void bio_integrity_advance(struct bio *, unsigned int);
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extern void bio_integrity_trim(struct bio *);
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extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t);
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extern int bioset_integrity_create(struct bio_set *, int);
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extern void bioset_integrity_free(struct bio_set *);
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extern void bio_integrity_init(void);
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#else /* CONFIG_BLK_DEV_INTEGRITY */
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static inline void *bio_integrity(struct bio *bio)
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{
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return NULL;
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}
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static inline int bioset_integrity_create(struct bio_set *bs, int pool_size)
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{
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return 0;
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}
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static inline void bioset_integrity_free (struct bio_set *bs)
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{
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return;
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}
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static inline bool bio_integrity_prep(struct bio *bio)
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{
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return true;
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}
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static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
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gfp_t gfp_mask)
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{
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return 0;
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}
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static inline void bio_integrity_advance(struct bio *bio,
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unsigned int bytes_done)
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{
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return;
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}
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static inline void bio_integrity_trim(struct bio *bio)
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{
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return;
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}
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static inline void bio_integrity_init(void)
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{
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return;
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}
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static inline bool bio_integrity_flagged(struct bio *bio, enum bip_flags flag)
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{
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return false;
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}
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static inline void *bio_integrity_alloc(struct bio * bio, gfp_t gfp,
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unsigned int nr)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline int bio_integrity_add_page(struct bio *bio, struct page *page,
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unsigned int len, unsigned int offset)
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{
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return 0;
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}
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static inline int bio_integrity_map_user(struct bio *bio, void __user *ubuf,
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ssize_t len, u32 seed)
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{
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return -EINVAL;
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}
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static inline void bio_integrity_unmap_free_user(struct bio *bio)
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{
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}
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#endif /* CONFIG_BLK_DEV_INTEGRITY */
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/*
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* Mark a bio as polled. Note that for async polled IO, the caller must
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* expect -EWOULDBLOCK if we cannot allocate a request (or other resources).
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@ -3,6 +3,7 @@
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#define _LINUX_BLK_INTEGRITY_H
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#include <linux/blk-mq.h>
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#include <linux/bio-integrity.h>
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struct request;
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