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IB/mlx5: Add steering SW ICM device memory type

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This patch adds support for allocating, deallocating and registering a new
device memory type, STEERING_SW_ICM.  This memory can be allocated and
used by a privileged user for direct rule insertion and management of the
device's steering tables.

The type is provided by the user via the dedicated attribute in the
alloc_dm ioctl command.

Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ariel Levkovich
2019-05-05 17:07:13 +03:00
committed by Jason Gunthorpe
parent 4056b12efd
commit 25c13324d0
6 changed files with 292 additions and 9 deletions
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7
drivers/infiniband/hw/mlx5/mr.c
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@@ -1247,6 +1247,13 @@ struct ib_mr *mlx5_ib_reg_dm_mr(struct ib_pd *pd, struct ib_dm *dm,
mode = MLX5_MKC_ACCESS_MODE_MEMIC;
start_addr -= pci_resource_start(dev->pdev, 0);
break;
case MLX5_IB_UAPI_DM_TYPE_STEERING_SW_ICM:
case MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM:
if (attr->access_flags & ~MLX5_IB_DM_SW_ICM_ALLOWED_ACCESS)
return ERR_PTR(-EINVAL);
mode = MLX5_MKC_ACCESS_MODE_SW_ICM;
break;
default:
return ERR_PTR(-EINVAL);
}