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1.. SPDX-License-Identifier: GPL-2.02 3===============4NIC SR-IOV APIs5===============6 7Modern NICs are strongly encouraged to focus on implementing the ``switchdev``8model (see :ref:`switchdev`) to configure forwarding and security of SR-IOV9functionality.10 11Legacy API12==========13 14The old SR-IOV API is implemented in ``rtnetlink`` Netlink family as part of15the ``RTM_GETLINK`` and ``RTM_SETLINK`` commands. On the driver side16it consists of a number of ``ndo_set_vf_*`` and ``ndo_get_vf_*`` callbacks.17 18Since the legacy APIs do not integrate well with the rest of the stack19the API is considered frozen; no new functionality or extensions20will be accepted. New drivers should not implement the uncommon callbacks;21namely the following callbacks are off limits:22 23 - ``ndo_get_vf_port``24 - ``ndo_set_vf_port``25 - ``ndo_set_vf_rss_query_en``26