diff options
| author |   Sagi Grimberg <sagig@mellanox.com> | 2014-05-18 18:32:40 +0300 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2014-05-27 11:53:02 -0700 |
| commit | c7f44fbda68a6b2d6ceb10e45c711750e779bace (patch) | |
| tree | 3adfb3a9be24d38e0c7523323686c2ee9e3e09f1 /drivers/infiniband/hw/mlx5/qp.c | |
| parent | mlx5_core: Simplify signature handover wqe for interleaved buffers (diff) | |
| download | linux-dev-c7f44fbda68a6b2d6ceb10e45c711750e779bace.tar.xz linux-dev-c7f44fbda68a6b2d6ceb10e45c711750e779bace.zip | |
mlx5_core: Copy DIF fields only when input and output space values match
Some DIF implementations (SCSI initiator/target) may want to use different
input/output values for application tag and/or reference tag. So in
case memory/wire domain values don't match HW must not copy them.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 00b5563acab7..a89f70473fb7 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2078,6 +2078,7 @@ static int mlx5_set_bsf(struct ib_mr *sig_mr, struct ib_sig_domain *wire = &sig_attrs->wire; int ret, selector; + memset(bsf, 0, sizeof(*bsf)); switch (sig_attrs->mem.sig_type) { case IB_SIG_TYPE_T10_DIF: if (sig_attrs->wire.sig_type != IB_SIG_TYPE_T10_DIF) @@ -2090,9 +2091,11 @@ static int mlx5_set_bsf(struct ib_mr *sig_mr, /* Same block structure */ basic->bsf_size_sbs = 1 << 4; if (mem->sig.dif.bg_type == wire->sig.dif.bg_type) - basic->wire.copy_byte_mask = 0xff; - else - basic->wire.copy_byte_mask = 0x3f; + basic->wire.copy_byte_mask |= 0xc0; + if (mem->sig.dif.app_tag == wire->sig.dif.app_tag) + basic->wire.copy_byte_mask |= 0x30; + if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag) + basic->wire.copy_byte_mask |= 0x0f; } else basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval); |