From 142537f4e5f7ffd3e34b0c46646ac9cb5d986d06 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 13 Aug 2014 19:54:32 +0300 Subject: IB/mlx5: Use extended internal signature layout Rather than using the basic BSF layout which utilizes a pre-configured signature settings (sufficient for current DIF implementation), we use the extended BSF layout to expose advanced signature settings. These settings will also be exposed to the user later. Signed-off-by: Sagi Grimberg Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mlx5/qp.c | 80 +++++++++++++++++++---------------------- 1 file changed, 37 insertions(+), 43 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 554410c2655d..13924a256290 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2020,53 +2020,47 @@ static u8 bs_selector(int block_size) } } -static int format_selector(struct ib_sig_attrs *attr, - struct ib_sig_domain *domain, - int *selector) +static int mlx5_fill_inl_bsf(struct ib_sig_domain *domain, + struct mlx5_bsf_inl *inl) { - -#define FORMAT_DIF_NONE 0 -#define FORMAT_DIF_CRC_INC 8 -#define FORMAT_DIF_CRC_NO_INC 12 -#define FORMAT_DIF_CSUM_INC 13 -#define FORMAT_DIF_CSUM_NO_INC 14 + /* Valid inline section and allow BSF refresh */ + inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID | + MLX5_BSF_REFRESH_DIF); + inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag); + inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag); switch (domain->sig.dif.type) { case IB_T10DIF_NONE: /* No DIF */ - *selector = FORMAT_DIF_NONE; break; case IB_T10DIF_TYPE1: /* Fall through */ case IB_T10DIF_TYPE2: - switch (domain->sig.dif.bg_type) { - case IB_T10DIF_CRC: - *selector = FORMAT_DIF_CRC_INC; - break; - case IB_T10DIF_CSUM: - *selector = FORMAT_DIF_CSUM_INC; - break; - default: - return 1; - } + inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ? + MLX5_DIF_CRC : MLX5_DIF_IPCS; + /* + * increment reftag and don't check if + * apptag=0xffff and reftag=0xffffffff + */ + inl->dif_inc_ref_guard_check = MLX5_BSF_INC_REFTAG | + MLX5_BSF_APPREF_ESCAPE; + inl->dif_app_bitmask_check = 0xffff; + /* repeating block */ + inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK; break; case IB_T10DIF_TYPE3: - switch (domain->sig.dif.bg_type) { - case IB_T10DIF_CRC: - *selector = domain->sig.dif.type3_inc_reftag ? - FORMAT_DIF_CRC_INC : - FORMAT_DIF_CRC_NO_INC; - break; - case IB_T10DIF_CSUM: - *selector = domain->sig.dif.type3_inc_reftag ? - FORMAT_DIF_CSUM_INC : - FORMAT_DIF_CSUM_NO_INC; - break; - default: - return 1; - } + inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ? + MLX5_DIF_CRC : MLX5_DIF_IPCS; + /* + * Don't inc reftag and don't check if + * apptag=0xffff and reftag=0xffffffff + */ + inl->dif_inc_ref_guard_check = MLX5_BSF_APPREF_ESCAPE; + inl->dif_app_bitmask_check = 0xffff; + /* Repeating block */ + inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK; break; default: - return 1; + return -EINVAL; } return 0; @@ -2080,7 +2074,7 @@ static int mlx5_set_bsf(struct ib_mr *sig_mr, struct mlx5_bsf_basic *basic = &bsf->basic; struct ib_sig_domain *mem = &sig_attrs->mem; struct ib_sig_domain *wire = &sig_attrs->wire; - int ret, selector; + int ret; memset(bsf, 0, sizeof(*bsf)); switch (sig_attrs->mem.sig_type) { @@ -2088,12 +2082,14 @@ static int mlx5_set_bsf(struct ib_mr *sig_mr, if (sig_attrs->wire.sig_type != IB_SIG_TYPE_T10_DIF) return -EINVAL; + /* Basic + Extended + Inline */ + basic->bsf_size_sbs = 1 << 7; /* Input domain check byte mask */ basic->check_byte_mask = sig_attrs->check_mask; if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval && mem->sig.dif.type == wire->sig.dif.type) { /* Same block structure */ - basic->bsf_size_sbs = 1 << 4; + basic->bsf_size_sbs |= 1 << 4; if (mem->sig.dif.bg_type == wire->sig.dif.bg_type) basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK; if (mem->sig.dif.app_tag == wire->sig.dif.app_tag) @@ -2105,18 +2101,16 @@ static int mlx5_set_bsf(struct ib_mr *sig_mr, basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval); basic->raw_data_size = cpu_to_be32(data_size); + basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx); + basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx); - ret = format_selector(sig_attrs, mem, &selector); + ret = mlx5_fill_inl_bsf(wire, &bsf->w_inl); if (ret) return -EINVAL; - basic->m_bfs_psv = cpu_to_be32(selector << 24 | - msig->psv_memory.psv_idx); - ret = format_selector(sig_attrs, wire, &selector); + ret = mlx5_fill_inl_bsf(mem, &bsf->m_inl); if (ret) return -EINVAL; - basic->w_bfs_psv = cpu_to_be32(selector << 24 | - msig->psv_wire.psv_idx); break; default: -- cgit v1.2.3