releases/4.9.111/ib-isert-fix-t10-pi-check-mask-setting.patch

   1 From 0e12af84cdd3056460f928adc164f9e87f4b303b Mon Sep 17 00:00:00 2001
   2 From: Max Gurtovoy <maxg@mellanox.com>
   3 Date: Thu, 31 May 2018 11:05:23 +0300
   4 Subject: IB/isert: fix T10-pi check mask setting
   5
   6 From: Max Gurtovoy <maxg@mellanox.com>
   7
   8 commit 0e12af84cdd3056460f928adc164f9e87f4b303b upstream.
   9
  10 A copy/paste bug (probably) caused setting of an app_tag check mask
  11 in case where a ref_tag check was needed.
  12
  13 Fixes: 38a2d0d429f1 ("IB/isert: convert to the generic RDMA READ/WRITE API")
  14 Fixes: 9e961ae73c2c ("IB/isert: Support T10-PI protected transactions")
  15 Cc: stable@vger.kernel.org
  16 Reviewed-by: Christoph Hellwig <hch@lst.de>
  17 Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
  18 Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
  19 Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
  20 Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
  21 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  22
  23 ---
  24  drivers/infiniband/ulp/isert/ib_isert.c |    2 +-
  25  1 file changed, 1 insertion(+), 1 deletion(-)
  26
  27 --- a/drivers/infiniband/ulp/isert/ib_isert.c
  28 +++ b/drivers/infiniband/ulp/isert/ib_isert.c
  29 @@ -2090,7 +2090,7 @@ isert_set_sig_attrs(struct se_cmd *se_cm
  30
  31         sig_attrs->check_mask =
  32                (se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD  ? 0xc0 : 0) |
  33 -              (se_cmd->prot_checks & TARGET_DIF_CHECK_REFTAG ? 0x30 : 0) |
  34 +              (se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG ? 0x30 : 0) |
  35                (se_cmd->prot_checks & TARGET_DIF_CHECK_REFTAG ? 0x0f : 0);
  36         return 0;
  37  }