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scsi: add support for user-meta interface

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Add support for sending user-meta buffer. Set tags to be checked
using flags specified by user/block-layer.
With this change, BIP_CTRL_NOCHECK becomes unused. Remove it.

Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241128112240.8867-10-anuj20.g@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Anuj Gupta 2024-11-28 16:52:39 +05:30 committed by Jens Axboe
parent 305b378e1c
commit b49cd5c88d
2 changed files with 9 additions and 11 deletions
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4
drivers/scsi/sd.c
View File

@ -814,14 +814,14 @@ static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd,
if (bio_integrity_flagged(bio, BIP_IP_CHECKSUM))
scmd->prot_flags |= SCSI_PROT_IP_CHECKSUM;
if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false)
if (bio_integrity_flagged(bio, BIP_CHECK_GUARD))
scmd->prot_flags |= SCSI_PROT_GUARD_CHECK;
}
if (dif != T10_PI_TYPE3_PROTECTION) { /* DIX/DIF Type 0, 1, 2 */
scmd->prot_flags |= SCSI_PROT_REF_INCREMENT;
if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false)
if (bio_integrity_flagged(bio, BIP_CHECK_REFTAG))
scmd->prot_flags |= SCSI_PROT_REF_CHECK;
}

16
include/linux/bio-integrity.h
View File

@ -7,13 +7,12 @@
enum bip_flags {
BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */
BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */
BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */
BIP_COPY_USER = 1 << 5, /* Kernel bounce buffer in use */
BIP_CHECK_GUARD = 1 << 6, /* guard check */
BIP_CHECK_REFTAG = 1 << 7, /* reftag check */
BIP_CHECK_APPTAG = 1 << 8, /* apptag check */
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 */
};
struct bio_integrity_payload {
@ -33,8 +32,7 @@ struct bio_integrity_payload {
struct bio_vec bip_inline_vecs[];/* embedded bvec array */
};
#define BIP_CLONE_FLAGS (BIP_MAPPED_INTEGRITY | BIP_CTRL_NOCHECK | \
BIP_DISK_NOCHECK | BIP_IP_CHECKSUM | \
#define BIP_CLONE_FLAGS (BIP_MAPPED_INTEGRITY | BIP_IP_CHECKSUM | \
BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG)
#ifdef CONFIG_BLK_DEV_INTEGRITY