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| author |   Yishai Hadas <yishaih@mellanox.com> | 2018-06-17 13:00:05 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-06-19 10:53:02 -0600 |
| commit | f6fe01b7181be1751a5d8f19f230eb0d17b9a7b1 (patch) | |
| tree | f4cf911992f233636bf97f82eec5f86e34f25b52 | |
| parent | IB/mlx5: Add DEVX support for memory registration (diff) | |
| download | linux-dev-f6fe01b7181be1751a5d8f19f230eb0d17b9a7b1.tar.xz linux-dev-f6fe01b7181be1751a5d8f19f230eb0d17b9a7b1.zip | |
IB/mlx5: Add DEVX query EQN support
Return the matching device EQN for a given user vector number via the
DEVX interface.
Note:
EQs are owned by the kernel and shared by all user processes.
Basically, a user CQ can point to any EQ.
The kernel doesn't enforce any such limitation today either.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/devx.c | 34 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5_user_ioctl_cmds.h | 6 |
2 files changed, 39 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c index 162321f486eb..dbf2d61591d3 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -389,6 +389,31 @@ static bool devx_is_general_cmd(void *in) } } +static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)(struct ib_device *ib_dev, + struct ib_uverbs_file *file, + struct uverbs_attr_bundle *attrs) +{ + struct mlx5_ib_dev *dev = to_mdev(ib_dev); + int user_vector; + int dev_eqn; + unsigned int irqn; + int err; + + if (uverbs_copy_from(&user_vector, attrs, + MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC)) + return -EFAULT; + + err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn); + if (err < 0) + return err; + + if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, + &dev_eqn, sizeof(dev_eqn))) + return -EFAULT; + + return 0; +} + /* *Security note: * The hardware protection mechanism works like this: Each device object that @@ -979,6 +1004,12 @@ static DECLARE_UVERBS_NAMED_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG, UVERBS_ACCESS_DESTROY, UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY))); +static DECLARE_UVERBS_NAMED_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN, + &UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC, UVERBS_ATTR_TYPE(u32), + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), + &UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, UVERBS_ATTR_TYPE(u32), + UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY))); + static DECLARE_UVERBS_NAMED_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR, &UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX, UVERBS_ATTR_TYPE(u32), UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)), @@ -1050,7 +1081,8 @@ static DECLARE_UVERBS_NAMED_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY, static DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX, &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER), - &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR)); + &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR), + &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN)); static DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ, &UVERBS_TYPE_ALLOC_IDR(0, devx_obj_cleanup), diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index dbc549a7bf50..1a05bb4b0b34 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -48,6 +48,7 @@ enum mlx5_ib_alloc_dm_attrs { enum mlx5_ib_devx_methods { MLX5_IB_METHOD_DEVX_OTHER = (1U << UVERBS_ID_NS_SHIFT), MLX5_IB_METHOD_DEVX_QUERY_UAR, + MLX5_IB_METHOD_DEVX_QUERY_EQN, }; enum mlx5_ib_devx_other_attrs { @@ -82,6 +83,11 @@ enum mlx5_ib_devx_obj_query_attrs { MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, }; +enum mlx5_ib_devx_query_eqn_attrs { + MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC = (1U << UVERBS_ID_NS_SHIFT), + MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, +}; + enum mlx5_ib_devx_obj_methods { MLX5_IB_METHOD_DEVX_OBJ_CREATE = (1U << UVERBS_ID_NS_SHIFT), MLX5_IB_METHOD_DEVX_OBJ_DESTROY, |