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IB/mlx5: Allocate a Transport Domain for each ucontext
Transport Domain groups several TIS and TIR object. By grouping these object, it defines wheather local loopback packets that are sent from the TIS objects in the group are received by the TIR objects in the same group. Allocate a Transport Domain(TD) for each user context to be used in the future by Raw Packet QP for Self-Loopback Control. Signed-off-by: Majd Dibbiny <majd@mellanox.com> Reviewed-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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2 changed files with 18 additions and 1 deletions
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@ -942,6 +942,13 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
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context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
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#endif
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if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) {
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err = mlx5_core_alloc_transport_domain(dev->mdev,
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&context->tdn);
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if (err)
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goto out_uars;
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}
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INIT_LIST_HEAD(&context->db_page_list);
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mutex_init(&context->db_page_mutex);
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@ -964,7 +971,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
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err = ib_copy_to_udata(udata, &resp, resp.response_length);
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if (err)
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goto out_uars;
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goto out_td;
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uuari->ver = ver;
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uuari->num_low_latency_uuars = req.num_low_latency_uuars;
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@ -974,6 +981,10 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
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return &context->ibucontext;
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out_td:
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if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
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mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
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out_uars:
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for (i--; i >= 0; i--)
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mlx5_cmd_free_uar(dev->mdev, uars[i].index);
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@ -998,6 +1009,9 @@ static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
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struct mlx5_uuar_info *uuari = &context->uuari;
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int i;
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if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
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mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
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for (i = 0; i < uuari->num_uars; i++) {
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if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
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mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
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@ -42,6 +42,7 @@
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#include <linux/mlx5/qp.h>
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#include <linux/mlx5/srq.h>
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#include <linux/types.h>
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#include <linux/mlx5/transobj.h>
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#define mlx5_ib_dbg(dev, format, arg...) \
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pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
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@ -110,6 +111,8 @@ struct mlx5_ib_ucontext {
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struct mutex db_page_mutex;
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struct mlx5_uuar_info uuari;
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u8 cqe_version;
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/* Transport Domain number */
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u32 tdn;
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};
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static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
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