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Linux Devlink Documentation

Documentation/networking/devlink/index.rst

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Linux Devlink Documentation

devlink is an API to expose device information and resources not directly related to any device class, such as chip-wide/switch-ASIC-wide configuration.

Locking

Driver facing APIs are currently transitioning to allow more explicit locking. Drivers can use the existing devlink_* set of APIs, or new APIs prefixed by devl_*. The older APIs handle all the locking in devlink core, but don't allow registration of most sub-objects once the main devlink object is itself registered. The newer devl_* APIs assume the devlink instance lock is already held. Drivers can take the instance lock by calling devl_lock(). It is also held all callbacks of devlink netlink commands.

Drivers are encouraged to use the devlink instance lock for their own needs.

Interface documentation

The following pages describe various interfaces available through devlink in general.

.. toctree:: :maxdepth: 1

devlink-dpipe devlink-health devlink-info devlink-flash devlink-params devlink-port devlink-region devlink-resource devlink-reload devlink-selftests devlink-trap devlink-linecard

Driver-specific documentation

Each driver that implements devlink is expected to document what parameters, info versions, and other features it supports.

.. toctree:: :maxdepth: 1

bnxt etas_es58x hns3 ionic ice mlx4 mlx5 mlxsw mv88e6xxx netdevsim nfp qed ti-cpsw-switch am65-nuss-cpsw-switch prestera iosm octeontx2 sfc