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IB/isert: use T10-PI check mask definitions from core layer 

No reason to use hard-coded protection information checks in ib_isert
driver. Use check masks from RDMA core driver.
Also, while we here, reduce the number of instructions made for setting
the check mask (no need to do bitwise or with 0 since we zero the mask
in the beginning of the function).

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Max Gurtovoy 2018-05-31 11:05:26 +03:00 committed by Jason Gunthorpe
parent c6c2c03a66
commit 26232872b1
1 changed files with 7 additions and 4 deletions
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11
drivers/infiniband/ulp/isert/ib_isert.c
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@ -2114,10 +2114,13 @@ isert_set_sig_attrs(struct se_cmd *se_cmd, struct ib_sig_attrs *sig_attrs)
return -EINVAL;
}
sig_attrs->check_mask =
(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD ? 0xc0 : 0) |
(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG ? 0x30 : 0) |
(se_cmd->prot_checks & TARGET_DIF_CHECK_REFTAG ? 0x0f : 0);
if (se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)
sig_attrs->check_mask |= IB_SIG_CHECK_GUARD;
if (se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)
sig_attrs->check_mask |= IB_SIG_CHECK_APPTAG;
if (se_cmd->prot_checks & TARGET_DIF_CHECK_REFTAG)
sig_attrs->check_mask |= IB_SIG_CHECK_REFTAG;
return 0;
}