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target/sbc: Add sbc_dif_read_strip software emulation

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Split up __sbc_dif_verify_read() so that VERIFY READ emulation can
perform target-core specific READ_STRIP, seperate from the existing
FILEIO/RAMDISK backend emulation code.

Also add sbc_dif_read_strip() in order to determine number of sectors
using cmd->prot_length, and skip the extra sbc_dif_copy_prot().

Reviewed-by: Sagi Grimberg <[email protected]>
Cc: Martin K. Petersen <[email protected]>
Cc: Or Gerlitz <[email protected]>
Cc: Quinn Tran <[email protected]>
Cc: Giridhar Malavali <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
This commit is contained in:
Nicholas Bellinger 2014-04-02 14:34:11 -07:00
commit 395ccb2531
2 changed files with 28 additions and 4 deletions
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1
include/target/target_core_backend.h
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@ -78,6 +78,7 @@ sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
sense_reason_t sbc_dif_read_strip(struct se_cmd *);
void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);