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[SCSI] Deprecate SCSI_PROT_*_CONVERT operations

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The checksum format is orthogonal to whether the protection information
is being passed on beyond the HBA or not.  It is perfectly valid to use
a non-T10 CRC with WRITE_STRIP and READ_INSERT.

Consequently it no longer makes sense to explicitly refer to the
conversion in the protection operation.  Update sd_dif and lpfc
accordingly.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Ihab Hamadi <Ihab.Hamadi@Emulex.Com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Martin K. Petersen 2009-09-18 17:32:59 -04:00 committed by James Bottomley
parent 6e883b0e42
commit c6af404215
3 changed files with 7 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
drivers/scsi/lpfc/lpfc_scsi.c
View file

@ -56,8 +56,6 @@ static char *dif_op_str[] = {
"SCSI_PROT_WRITE_INSERT",
"SCSI_PROT_READ_PASS",
"SCSI_PROT_WRITE_PASS",
"SCSI_PROT_READ_CONVERT",
"SCSI_PROT_WRITE_CONVERT"
};
static void
lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
@ -1131,13 +1129,11 @@ lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
ret_prof = LPFC_PROF_A1;
break;
case SCSI_PROT_READ_CONVERT:
case SCSI_PROT_WRITE_CONVERT:
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
ret_prof = LPFC_PROF_AST1;
break;
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
case SCSI_PROT_NORMAL:
default:
printk(KERN_ERR "Bad op/guard:%d/%d combination\n",
@ -1157,8 +1153,6 @@ lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
ret_prof = LPFC_PROF_C1;
break;
case SCSI_PROT_READ_CONVERT:
case SCSI_PROT_WRITE_CONVERT:
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
case SCSI_PROT_NORMAL:
@ -1209,8 +1203,7 @@ lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask,
static int cnt;
if (protcnt && (op == SCSI_PROT_WRITE_STRIP ||
op == SCSI_PROT_WRITE_PASS ||
op == SCSI_PROT_WRITE_CONVERT)) {
op == SCSI_PROT_WRITE_PASS)) {
cnt++;
spt = page_address(sg_page(scsi_prot_sglist(sc))) +
@ -1501,8 +1494,6 @@ lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
case SCSI_PROT_WRITE_STRIP:
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
case SCSI_PROT_WRITE_CONVERT:
case SCSI_PROT_READ_CONVERT:
ret = LPFC_PG_TYPE_DIF_BUF;
break;
default:

16
drivers/scsi/sd_dif.c
View file

@ -364,15 +364,9 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
*/
void sd_dif_op(struct scsi_cmnd *scmd, unsigned int dif, unsigned int dix, unsigned int type)
{
int csum_convert, prot_op;
int prot_op;
prot_op = 0;
/* Convert checksum? */
if (scsi_host_get_guard(scmd->device->host) != SHOST_DIX_GUARD_CRC)
csum_convert = 1;
else
csum_convert = 0;
prot_op = SCSI_PROT_NORMAL;
BUG_ON(dif && (scmd->cmnd[0] == READ_6 || scmd->cmnd[0] == WRITE_6));
@ -382,9 +376,6 @@ void sd_dif_op(struct scsi_cmnd *scmd, unsigned int dif, unsigned int dix, unsig
case READ_12:
case READ_16:
if (dif && dix)
if (csum_convert)
prot_op = SCSI_PROT_READ_CONVERT;
else
prot_op = SCSI_PROT_READ_PASS;
else if (dif && !dix)
prot_op = SCSI_PROT_READ_STRIP;
@ -398,9 +389,6 @@ void sd_dif_op(struct scsi_cmnd *scmd, unsigned int dif, unsigned int dix, unsig
case WRITE_12:
case WRITE_16:
if (dif && dix)
if (csum_convert)
prot_op = SCSI_PROT_WRITE_CONVERT;
else
prot_op = SCSI_PROT_WRITE_PASS;
else if (dif && !dix)
prot_op = SCSI_PROT_WRITE_INSERT;

4
include/scsi/scsi_cmnd.h
View file

@ -229,10 +229,6 @@ enum scsi_prot_operations {
/* OS-HBA: Protected, HBA-Target: Protected */
SCSI_PROT_READ_PASS,
SCSI_PROT_WRITE_PASS,
/* OS-HBA: Protected, HBA-Target: Protected, checksum conversion */
SCSI_PROT_READ_CONVERT,
SCSI_PROT_WRITE_CONVERT,
};
static inline void scsi_set_prot_op(struct scsi_cmnd *scmd, unsigned char op)