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1What: /config/rdma_cm2Date: November 29, 20153KernelVersion: 4.4.04Description: Interface is used to configure RDMA-cable HCAs in respect to5 RDMA-CM attributes.6 7 Attributes are visible only when configfs is mounted. To mount8 configfs in /config directory use:9 # mount -t configfs none /config/10 11 In order to set parameters related to a specific HCA, a directory12 for this HCA has to be created:13 mkdir -p /config/rdma_cm/<hca>14 15 16What: /config/rdma_cm/<hca>/ports/<port-num>/default_roce_mode17Date: November 29, 201518KernelVersion: 4.4.019Description: RDMA-CM based connections from HCA <hca> at port <port-num>20 will be initiated with this RoCE type as default.21 The possible RoCE types are either "IB/RoCE v1" or "RoCE v2".22 This parameter has RW access.23 24What: /config/rdma_cm/<hca>/ports/<port-num>/default_roce_tos25Date: February 7, 201726KernelVersion: 4.11.027Description: RDMA-CM QPs from HCA <hca> at port <port-num>28 will be created with this TOS as default.29 This can be overridden by using the rdma_set_option API.30 The possible RoCE TOS values are 0-255.31