devlink-sb - Linux
Overview
devlink-sb is a command-line tool used to interact with the Linux datapath by conducting operations on switchdev devices. It enables network engineers and administrators to configure and manage switchdev devices and their data paths. Whether it’s configuring offloads, manipulating tables or groups, or accessing detailed statistics and diagnostics, devlink-sb provides a versatile way to manage your network infrastructure.
Syntax
devlink-sb [options] <command> [parameters]
Options/Flags
- -h, –help: Display help and usage information.
- -v, –version: Print the version of
devlink-sb. - –debug: Enable debug logging.
- -a, –all: Perform action on all switchdev devices.
- -s, –dev
: Specify a switchdev device name.
Examples
List all switchdev devices
devlink-sb -a list
Configure offloads for a switchdev device
devlink-sb -s <dev> offload set xmit_hw_checksum on
Add a flow to a bridge port
devlink-sb create flow sb rule add br0 ingress match src_mac 00:11:22:33:44:55
Display detailed statistics for a switchdev device
devlink-sb -s <dev> stats show
Common Issues
Device not found
Ensure that the switchdev device name entered is correct.
Operation not supported
Some operations may not be supported by all switchdev devices. Refer to the documentation for your device for supported operations.
Integration
devlink-sb can be integrated with other tools and scripts for advanced network management tasks. For example, you can use it with tc to configure traffic control rules based on devlink-sb device statistics.
Related Commands
ethtooltcip link