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linux-yocto/Documentation/ABI/testing/configfs-rdma_cm
Majd Dibbiny 89052d784b IB/cma: Add default RoCE TOS to CMA configfs 
Add new entry to the RDMA-CM configfs that allows users
to select default TOS for RDMA-CM QPs.

This is useful for users that want to control the TOS for legacy
applications without changing their code.

Application that sets the TOS explicitly using the rdma_set_option
API will continue to work as expected, meaning overriding the configfs
value.

CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-02-15 09:51:28 -05:00

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What: /config/rdma_cm Date: November 29, 2015 KernelVersion: 4.4.0 Description: Interface is used to configure RDMA-cable HCAs in respect to RDMA-CM attributes.

	Attributes are visible only when configfs is mounted. To mount
	configfs in /config directory use:
	# mount -t configfs none /config/

	In order to set parameters related to a specific HCA, a directory
	for this HCA has to be created:
	mkdir -p /config/rdma_cm/<hca>

What: /config/rdma_cm//ports//default_roce_mode Date: November 29, 2015 KernelVersion: 4.4.0 Description: RDMA-CM based connections from HCA at port will be initiated with this RoCE type as default. The possible RoCE types are either "IB/RoCE v1" or "RoCE v2". This parameter has RW access.

What: /config/rdma_cm//ports//default_roce_tos Date: February 7, 2017 KernelVersion: 4.11.0 Description: RDMA-CM QPs from HCA at port will be created with this TOS as default. This can be overridden by using the rdma_set_option API. The possible RoCE TOS values are 0-255.