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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-26 22:01:35 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-26 22:01:35 +0300 |
| commit | 3f7282139fe1594be464b90141d56738e7a0ea8a (patch) | |
| tree | 2a6dfc4449ceeee6b5509c3fcc58c33865c89af6 /include/linux/t10-pi.h | |
| parent | 752d422e74c41084c3c9c9a159cb8d2795fa0c22 (diff) | |
| parent | 1e21270685ae4c14361dd501da62cdc4be867d4e (diff) | |
| download | linux-3f7282139fe1594be464b90141d56738e7a0ea8a.tar.xz | |
Merge tag 'for-5.18/64bit-pi-2022-03-25' of git://git.kernel.dk/linux-block
Pull block layer 64-bit data integrity support from Jens Axboe:
"This adds support for 64-bit data integrity in the block layer and in
NVMe"
* tag 'for-5.18/64bit-pi-2022-03-25' of git://git.kernel.dk/linux-block:
crypto: fix crc64 testmgr digest byte order
nvme: add support for enhanced metadata
block: add pi for extended integrity
crypto: add rocksoft 64b crc guard tag framework
lib: add rocksoft model crc64
linux/kernel: introduce lower_48_bits function
asm-generic: introduce be48 unaligned accessors
nvme: allow integrity on extended metadata formats
block: support pi with extended metadata
Diffstat (limited to 'include/linux/t10-pi.h')
| -rw-r--r-- | include/linux/t10-pi.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h index c635c2e014e3..a4b1af581f69 100644 --- a/include/linux/t10-pi.h +++ b/include/linux/t10-pi.h @@ -53,4 +53,24 @@ extern const struct blk_integrity_profile t10_pi_type1_ip; extern const struct blk_integrity_profile t10_pi_type3_crc; extern const struct blk_integrity_profile t10_pi_type3_ip; +struct crc64_pi_tuple { + __be64 guard_tag; + __be16 app_tag; + __u8 ref_tag[6]; +}; + +static inline u64 ext_pi_ref_tag(struct request *rq) +{ + unsigned int shift = ilog2(queue_logical_block_size(rq->q)); + +#ifdef CONFIG_BLK_DEV_INTEGRITY + if (rq->q->integrity.interval_exp) + shift = rq->q->integrity.interval_exp; +#endif + return lower_48_bits(blk_rq_pos(rq) >> (shift - SECTOR_SHIFT)); +} + +extern const struct blk_integrity_profile ext_pi_type1_crc64; +extern const struct blk_integrity_profile ext_pi_type3_crc64; + #endif |