net/mlx5e: Limit UMR length to the device's limitation

[cascardo/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_main.c

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 03d944c..65360b1 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -340,6 +340,9 @@ static int mlx5e_create_rq(struct mlx5e_channel *c,
                rq->alloc_wqe = mlx5e_alloc_rx_mpwqe;
                rq->dealloc_wqe = mlx5e_dealloc_rx_mpwqe;
 
+               rq->mpwqe_mtt_offset = c->ix *
+                       MLX5E_REQUIRED_MTTS(1, BIT(priv->params.log_rq_size));
+
                rq->mpwqe_stride_sz = BIT(priv->params.mpwqe_log_stride_sz);
                rq->mpwqe_num_strides = BIT(priv->params.mpwqe_log_num_strides);
                rq->wqe_sz = rq->mpwqe_stride_sz * rq->mpwqe_num_strides;
@@ -3233,8 +3236,8 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv)
        struct mlx5_create_mkey_mbox_in *in;
        struct mlx5_mkey_seg *mkc;
        int inlen = sizeof(*in);
-       u64 npages =
-               priv->profile->max_nch(mdev) * MLX5_CHANNEL_MAX_NUM_MTTS;
+       u64 npages = MLX5E_REQUIRED_MTTS(priv->profile->max_nch(mdev),
+                                        BIT(MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW));
        int err;
 
        in = mlx5_vzalloc(inlen);
@@ -3248,10 +3251,12 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv)
                     MLX5_PERM_LOCAL_WRITE |
                     MLX5_ACCESS_MODE_MTT;
 
+       npages = min_t(u32, ALIGN(U16_MAX, 4) * 2, npages);
+
        mkc->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
        mkc->flags_pd = cpu_to_be32(mdev->mlx5e_res.pdn);
        mkc->len = cpu_to_be64(npages << PAGE_SHIFT);
-       mkc->xlt_oct_size = cpu_to_be32(mlx5e_get_mtt_octw(npages));
+       mkc->xlt_oct_size = cpu_to_be32(MLX5_MTT_OCTW(npages));
        mkc->log2_page_size = PAGE_SHIFT;
 
        err = mlx5_core_create_mkey(mdev, &priv->umr_mkey, in, inlen, NULL,