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authorMark Bloch <markb@mellanox.com>2018-08-28 14:18:53 +0300
committerJason Gunthorpe <jgg@mellanox.com>2018-09-05 15:23:59 -0600
commit08aeb97cb82483192bd8ad8e60d1b73ce1b75923 (patch)
treec394ebb6ad3b2bb94dd9ac82af77660bf238d35f
parentRDMA/uverbs: Add generic function to fill in flow action object (diff)
downloadlinux-dev-08aeb97cb82483192bd8ad8e60d1b73ce1b75923.tar.xz
linux-dev-08aeb97cb82483192bd8ad8e60d1b73ce1b75923.zip
RDMA/mlx5: Add new flow action verb - packet reformat
For now, only add L2_TUNNEL_TO_L2 option. This will allow to perform generic decap operation if the encapsulating protocol is L2 based, and the inner packet is also L2 based. For example this can be used to decap VXLAN packets. Signed-off-by: Mark Bloch <markb@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/flow.c76
-rw-r--r--drivers/infiniband/hw/mlx5/mlx5_ib.h1
-rw-r--r--include/uapi/rdma/mlx5_user_ioctl_cmds.h7
-rw-r--r--include/uapi/rdma/mlx5_user_ioctl_verbs.h4
4 files changed, 87 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/flow.c b/drivers/infiniband/hw/mlx5/flow.c
index 0c89d5431c7e..888f79d6a125 100644
--- a/drivers/infiniband/hw/mlx5/flow.c
+++ b/drivers/infiniband/hw/mlx5/flow.c
@@ -202,6 +202,8 @@ void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
maction->flow_action_raw.action_id);
break;
+ case MLX5_IB_FLOW_ACTION_DECAP:
+ break;
default:
break;
}
@@ -286,6 +288,64 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
return 0;
}
+static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
+ u8 packet_reformat_type,
+ u8 ft_type)
+{
+ switch (packet_reformat_type) {
+ case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
+ if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
+ return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
+ break;
+ default:
+ break;
+ }
+
+ return false;
+}
+
+static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
+ struct ib_uverbs_file *file,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
+ struct mlx5_ib_dev *mdev = to_mdev(uobj->context->device);
+ enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
+ enum mlx5_ib_uapi_flow_table_type ft_type;
+ struct mlx5_ib_flow_action *maction;
+ int ret;
+
+ ret = uverbs_get_const(&ft_type, attrs,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
+ if (ret)
+ return ret;
+
+ ret = uverbs_get_const(&dv_prt, attrs,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
+ if (ret)
+ return ret;
+
+ if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
+ return -EOPNOTSUPP;
+
+ maction = kzalloc(sizeof(*maction), GFP_KERNEL);
+ if (!maction)
+ return -ENOMEM;
+
+ if (dv_prt ==
+ MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
+ maction->flow_action_raw.sub_type =
+ MLX5_IB_FLOW_ACTION_DECAP;
+ maction->flow_action_raw.dev = mdev;
+ }
+
+ uverbs_flow_action_fill_action(&maction->ib_action, uobj,
+ uobj->context->device,
+ IB_FLOW_ACTION_UNSPECIFIED);
+ return 0;
+}
+
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_CREATE_FLOW,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
@@ -335,10 +395,24 @@ DECLARE_UVERBS_NAMED_METHOD(
enum mlx5_ib_uapi_flow_table_type,
UA_MANDATORY));
+DECLARE_UVERBS_NAMED_METHOD(
+ MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
+ UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
+ UVERBS_OBJECT_FLOW_ACTION,
+ UVERBS_ACCESS_NEW,
+ UA_MANDATORY),
+ UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
+ enum mlx5_ib_uapi_flow_action_packet_reformat_type,
+ UA_MANDATORY),
+ UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
+ enum mlx5_ib_uapi_flow_table_type,
+ UA_MANDATORY));
+
ADD_UVERBS_METHODS(
mlx5_ib_flow_actions,
UVERBS_OBJECT_FLOW_ACTION,
- &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER));
+ &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
+ &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index c26ea868b4f1..8ac84cc00fd5 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -153,6 +153,7 @@ struct mlx5_ib_pd {
enum {
MLX5_IB_FLOW_ACTION_MODIFY_HEADER,
+ MLX5_IB_FLOW_ACTION_DECAP,
};
#define MLX5_IB_FLOW_MCAST_PRIO (MLX5_BY_PASS_NUM_PRIOS - 1)
diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
index 9c83e13c0e89..40db7fca3d0b 100644
--- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h
+++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h
@@ -168,6 +168,7 @@ enum mlx5_ib_flow_methods {
enum mlx5_ib_flow_action_methods {
MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER = (1U << UVERBS_ID_NS_SHIFT),
+ MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
};
enum mlx5_ib_create_flow_action_create_modify_header_attrs {
@@ -176,4 +177,10 @@ enum mlx5_ib_create_flow_action_create_modify_header_attrs {
MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
};
+enum mlx5_ib_create_flow_action_create_packet_reformat_attrs {
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
+ MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
+};
+
#endif
diff --git a/include/uapi/rdma/mlx5_user_ioctl_verbs.h b/include/uapi/rdma/mlx5_user_ioctl_verbs.h
index ceb6d0d8529a..b5fda0fcd484 100644
--- a/include/uapi/rdma/mlx5_user_ioctl_verbs.h
+++ b/include/uapi/rdma/mlx5_user_ioctl_verbs.h
@@ -44,5 +44,9 @@ enum mlx5_ib_uapi_flow_table_type {
MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX = 0x1,
};
+enum mlx5_ib_uapi_flow_action_packet_reformat_type {
+ MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2 = 0x0,
+};
+
#endif