From: Leon Romanovsky <leonro@xxxxxxxxxxxx> >From Yishai, This series comes to enable the DEVX functionality in some wider scope, specifically, - It enables using kernel objects that were created by the verbs API in the DEVX flow. - It enables white list commands without DEVX user context. - It enables the IB link layer under CAP_NET_RAW capabilities. - It exposes the PRM handles for RAW QP (i.e. TIRN, TISN, RQN, SQN) to be used later on directly by the DEVX interface. In General, Each object that is created/destroyed/modified via verbs will be stamped with a UID based on its user context. This is already done for DEVX objects commands. This will enable the firmware to enforce the usage of kernel objects from the DEVX flow by validating that the same UID is used and the resources are really related to the same user. For example in case a CQ was created with verbs it will be stamped with UID and once will be pointed by a DEVX create QP command the firmware will validate that the input CQN really belongs to the UID which issues the create QP command. As of the above, all the PRM objects (except of the public ones which are managed by the kernel e.g. FLOW, etc.) will have a UID upon their create/modify/destroy commands. The detection of UMEM / physical addressed in the relevant commands will be done by firmware according to a 'umem valid bit' as the UID may be used in both cases. The series also enables white list commands which don't require a specific DEVX context, instead of this a device UID is used so that the firmware will mask un-privileged functionality. The IB link layer is also enabled once CAP_NET_RAW permission exists. To enable using the RAW QP underlay objects (e.g. TIRN, RQN, etc.) later on by DEVX commands the UHW output for this case was extended to return this data when a DEVX context is used. Thanks Yishai Hadas (4): IB/mlx5: Expose RAW QP device handles to user space IB/mlx5: Manage device uid for DEVX white list commands IB/mlx5: Enable DEVX white list commands IB/mlx5: Enable DEVX on IB drivers/infiniband/hw/mlx5/devx.c | 87 +++++++++++++++++++++++++++--------- drivers/infiniband/hw/mlx5/main.c | 22 ++++----- drivers/infiniband/hw/mlx5/mlx5_ib.h | 13 +++--- drivers/infiniband/hw/mlx5/qp.c | 38 +++++++++++++++- include/uapi/rdma/mlx5-abi.h | 13 ++++++ 5 files changed, 132 insertions(+), 41 deletions(-) -- 2.14.4
