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RDMA/mlx5: Allow providing extra scatter CQE QP flag

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Scatter CQE feature relies on two flags MLX5_QP_FLAG_SCATTER_CQE and
MLX5_QP_FLAG_ALLOW_SCATTER_CQE, both of them can be provided without
relation to device capability.

Relax global validity check to allow MLX5_QP_FLAG_ALLOW_SCATTER_CQE QP
flag.

Existing user applications are failing on this new validity check.

Fixes: 90ecb37a75 ("RDMA/mlx5: Change scatter CQE flag to be set like other vendor flags")
Fixes: 37518fa49f ("RDMA/mlx5: Process all vendor flags in one place")
Link: https://lore.kernel.org/r/20200728120255.805733-1-leon@kernel.org
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky 2020-07-28 15:02:55 +03:00 committed by Jason Gunthorpe
parent 5351a56b1a
commit 81530ab08e
1 changed files with 15 additions and 9 deletions
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24
drivers/infiniband/hw/mlx5/qp.c
View File

@ -1766,15 +1766,14 @@ err:
}
static void configure_requester_scat_cqe(struct mlx5_ib_dev *dev,
struct mlx5_ib_qp *qp,
struct ib_qp_init_attr *init_attr,
struct mlx5_ib_create_qp *ucmd,
void *qpc)
{
int scqe_sz;
bool allow_scat_cqe = false;
if (ucmd)
allow_scat_cqe = ucmd->flags & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
allow_scat_cqe = qp->flags_en & MLX5_QP_FLAG_ALLOW_SCATTER_CQE;
if (!allow_scat_cqe && init_attr->sq_sig_type != IB_SIGNAL_ALL_WR)
return;
@ -2012,7 +2011,7 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
}
if ((qp->flags_en & MLX5_QP_FLAG_SCATTER_CQE) &&
(qp->type == MLX5_IB_QPT_DCI || qp->type == IB_QPT_RC))
configure_requester_scat_cqe(dev, init_attr, ucmd, qpc);
configure_requester_scat_cqe(dev, qp, init_attr, qpc);
if (qp->rq.wqe_cnt) {
MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
@ -2543,13 +2542,18 @@ static void process_vendor_flag(struct mlx5_ib_dev *dev, int *flags, int flag,
return;
}
if (flag == MLX5_QP_FLAG_SCATTER_CQE) {
switch (flag) {
case MLX5_QP_FLAG_SCATTER_CQE:
case MLX5_QP_FLAG_ALLOW_SCATTER_CQE:
/*
* We don't return error if this flag was provided,
* and mlx5 doesn't have right capability.
*/
*flags &= ~MLX5_QP_FLAG_SCATTER_CQE;
* We don't return error if these flags were provided,
* and mlx5 doesn't have right capability.
*/
*flags &= ~(MLX5_QP_FLAG_SCATTER_CQE |
MLX5_QP_FLAG_ALLOW_SCATTER_CQE);
return;
default:
break;
}
mlx5_ib_dbg(dev, "Vendor create QP flag 0x%X is not supported\n", flag);
}
@ -2589,6 +2593,8 @@ static int process_vendor_flags(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SIGNATURE, true, qp);
process_vendor_flag(dev, &flags, MLX5_QP_FLAG_SCATTER_CQE,
MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
process_vendor_flag(dev, &flags, MLX5_QP_FLAG_ALLOW_SCATTER_CQE,
MLX5_CAP_GEN(mdev, sctr_data_cqe), qp);
if (qp->type == IB_QPT_RAW_PACKET) {
cond = MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan) ||