Commit 61a9f252 authored by Martin K. Petersen's avatar Martin K. Petersen

scsi: mpt3sas: Fix reference tag handling for WRITE_INSERT

Testing revealed a problem with how the reference tag was handled for
a WRITE_INSERT operation. The SCSI_PROT_REF_CHECK flag is not set when
the controller is asked to generate the protection information
(i.e. not DIX). And as a result the initial reference tag would not be
set in the WRITE_INSERT case.

Separate handling of the REF_CHECK and REF_INCREMENT flags to align
with both the DIX spec and the MPI implementation.

Link: https://lore.kernel.org/r/20211028034202.24225-1-martin.petersen@oracle.com
Fixes: b3e2c72a ("scsi: mpt3sas: Use the proper SCSI midlayer interfaces for PI")
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 282da7ce
......@@ -5065,9 +5065,12 @@ _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK)
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
if (scmd->prot_flags & SCSI_PROT_REF_CHECK) {
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG;
if (scmd->prot_flags & SCSI_PROT_REF_CHECK)
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG;
if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT) {
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG;
mpi_request->CDB.EEDP32.PrimaryReferenceTag =
cpu_to_be32(scsi_prot_ref_tag(scmd));
}
......
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