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RDMA-SYSTEM(8) Linux RDMA-SYSTEM(8)

NAME

rdma-system - 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>

06 Jul 2017 iproute2