rdma-system - Man Page
RDMA subsystem configuration
Synopsis
rdma [ OPTIONS ] sys { COMMAND | help }
OPTIONS := { -V[ersion] | -d[etails] }
rdma system show
rdma system set netns NEWMODE
rdma system set privileged-qkey NEWSTATE
rdma system help
Description
rdma system set - set RDMA subsystem network namespace mode or
privileged qkey mode
rdma system show - display RDMA subsystem network namespace mode and
privileged qkey state
NEWMODE - specifies the RDMA subsystem mode. Either exclusive or shared. When user wants to assign dedicated RDMA device to a particular network namespace, exclusive mode should be set before creating any network namespace. If there are active network namespaces and if one or more RDMA devices exist, changing mode from shared to exclusive returns error code EBUSY.
When RDMA subsystem is in shared mode, RDMA device is accessible in all network namespace. When RDMA device isolation among multiple network namespaces is not needed, shared mode can be used.
It is preferred to not change the subsystem mode when there is active RDMA traffic running, even though it is supported.
NEWSTATE - Specifies the new state of the privileged-qkey parameter, either on or off. This parameter determines whether a non-privileged user is allowed to specify a controlled QKEY or not.
Examples
- rdma system show
Shows the state of RDMA subsystem network namespace mode on the system and the state of privileged qkey parameter.
- rdma system set netns exclusive
Sets the RDMA subsystem in network namespace exclusive mode. In this mode RDMA devices are visible only in single network namespace.
- rdma system set netns shared
Sets the RDMA subsystem in network namespace shared mode. In this mode RDMA devices are shared among network namespaces.
- rdma system set privileged-qkey on
Sets the privileged-qkey parameter to on. In this state non-privileged user is allowed to specify a controlled QKEY.
- rdma system set privileged-qkey off
Sets the privileged-qkey parameter to off. In this state non-privileged user is *not* allowed to specify a controlled QKEY.
See Also
rdma(8), rdma-link(8), rdma-resource(8), network_namespaces(7), namespaces(7),
Author
Parav Pandit <parav@mellanox.com>