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block: Clean up the code used to generate and verify integrity metadata

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Instead of the "operate" parameter we pass in a seed value and a pointer
to a function that can be used to process the integrity metadata. The
generation function is changed to have a return value to fit into this
scheme.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen
2014-09-27 09:14:51 -06:00
committed by Jens Axboe
parent 5a2aa87305
commit 1859308853
4 changed files with 93 additions and 114 deletions
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include/linux/bio.h
+12
View File
@@ -322,6 +322,18 @@ struct bio_integrity_payload {
struct bio_vec *bip_vec;
struct bio_vec bip_inline_vecs[0];/* embedded bvec array */
};
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;
}
#endif /* CONFIG_BLK_DEV_INTEGRITY */
extern void bio_trim(struct bio *bio, int offset, int size);
include/linux/blkdev.h
+4 -5
View File
@@ -1461,7 +1461,7 @@ static inline uint64_t rq_io_start_time_ns(struct request *req)
#define INTEGRITY_FLAG_READ 2 /* verify data integrity on read */
#define INTEGRITY_FLAG_WRITE 4 /* generate data integrity on write */
struct blk_integrity_exchg {
struct blk_integrity_iter {
void *prot_buf;
void *data_buf;
sector_t seed;
@@ -1470,12 +1470,11 @@ struct blk_integrity_exchg {
const char *disk_name;
};
typedef void (integrity_gen_fn) (struct blk_integrity_exchg *);
typedef int (integrity_vrfy_fn) (struct blk_integrity_exchg *);
typedef int (integrity_processing_fn) (struct blk_integrity_iter *);
struct blk_integrity {
integrity_gen_fn *generate_fn;
integrity_vrfy_fn *verify_fn;
integrity_processing_fn *generate_fn;
integrity_processing_fn *verify_fn;
unsigned short flags;
unsigned short tuple_size;