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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>
This commit is contained in:
majd@mellanox.com 2016-01-14 19:13:02 +02:00 committed by Doug Ledford
parent a14c2d4bee
commit 146d2f1af3
2 changed files with 18 additions and 1 deletions
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16
drivers/infiniband/hw/mlx5/main.c
View File

@ -942,6 +942,13 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
context->ibucontext.invalidate_range = &mlx5_ib_invalidate_range;
#endif
if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain)) {
err = mlx5_core_alloc_transport_domain(dev->mdev,
&context->tdn);
if (err)
goto out_uars;
}
INIT_LIST_HEAD(&context->db_page_list);
mutex_init(&context->db_page_mutex);
@ -964,7 +971,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
err = ib_copy_to_udata(udata, &resp, resp.response_length);
if (err)
goto out_uars;
goto out_td;
uuari->ver = ver;
uuari->num_low_latency_uuars = req.num_low_latency_uuars;
@ -974,6 +981,10 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
return &context->ibucontext;
out_td:
if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
out_uars:
for (i--; i >= 0; i--)
mlx5_cmd_free_uar(dev->mdev, uars[i].index);
@ -998,6 +1009,9 @@ static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
struct mlx5_uuar_info *uuari = &context->uuari;
int i;
if (MLX5_CAP_GEN(dev->mdev, log_max_transport_domain))
mlx5_core_dealloc_transport_domain(dev->mdev, context->tdn);
for (i = 0; i < uuari->num_uars; i++) {
if (mlx5_cmd_free_uar(dev->mdev, uuari->uars[i].index))
mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);

3
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -42,6 +42,7 @@
#include <linux/mlx5/qp.h>
#include <linux/mlx5/srq.h>
#include <linux/types.h>
#include <linux/mlx5/transobj.h>
#define mlx5_ib_dbg(dev, format, arg...) \
pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
@ -110,6 +111,8 @@ struct mlx5_ib_ucontext {
struct mutex db_page_mutex;
struct mlx5_uuar_info uuari;
u8 cqe_version;
/* Transport Domain number */
u32 tdn;
};
static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)