diff options
| author | Michael Guralnik <michaelgur@nvidia.com> | 2026-07-26 12:09:41 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-07-27 03:17:32 -0400 |
| commit | ba7f6f2f168081482919529f50c5aea802997f43 (patch) | |
| tree | c6e3b56b36b31d7b0b54b6c06c9327af6cc2cd17 /drivers/infiniband/hw | |
| parent | 86ae5b515f2d1f4b673f3668a9e8bd22d95dac4d (diff) | |
RDMA/mlx5: Deprecate latency-sensitive QPs feature
New HW no longer implements a separate class for latency-sensitive QPs and
advertises this by a new cap bit.
REG_UMR is the only QP that used this feature, so gate its usage of the
feature on this cap.
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20260726-deprecate-lat-qps-v2-2-5e0c2ee55046@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 12 |
2 files changed, 12 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 788f79f040b0..cc7e9a3e7631 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -4951,6 +4951,9 @@ static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev) if (err) return err; + if (MLX5_CAP_GEN(dev->mdev, qp_latency_sensitive_disable)) + return 0; + err = mlx5_alloc_bfreg(dev->mdev, &dev->fp_bfreg, false, true); if (err) mlx5_free_bfreg(dev->mdev, &dev->bfreg); @@ -4960,7 +4963,8 @@ static int mlx5_ib_stage_bfrag_init(struct mlx5_ib_dev *dev) static void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev) { - mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); + if (!MLX5_CAP_GEN(dev->mdev, qp_latency_sensitive_disable)) + mlx5_free_bfreg(dev->mdev, &dev->fp_bfreg); mlx5_free_bfreg(dev->mdev, &dev->bfreg); } diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index e25ac139e43f..0d4f8b109ad2 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1138,7 +1138,8 @@ static int _create_kernel_qp(struct mlx5_ib_dev *dev, void *qpc; int err; - if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR) + if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR && + !MLX5_CAP_GEN(dev->mdev, qp_latency_sensitive_disable)) qp->bf.bfreg = &dev->fp_bfreg; else qp->bf.bfreg = &dev->bfreg; @@ -2524,11 +2525,12 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, MLX5_SET(qpc, qpc, st, mlx5_st); MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED); - if (attr->qp_type != MLX5_IB_QPT_REG_UMR) + if (attr->qp_type == MLX5_IB_QPT_REG_UMR) { + if (!MLX5_CAP_GEN(dev->mdev, qp_latency_sensitive_disable)) + MLX5_SET(qpc, qpc, latency_sensitive, 1); + } else { MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn); - else - MLX5_SET(qpc, qpc, latency_sensitive, 1); - + } if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) MLX5_SET(qpc, qpc, block_lb_mc, 1); |