Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.. SPDX-License-Identifier: GPL-2.0
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===============
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NIC SR-IOV APIs
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===============
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Modern NICs are strongly encouraged to focus on implementing the ``switchdev``
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model (see :ref:`switchdev`) to configure forwarding and security of SR-IOV
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functionality.
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Legacy API
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==========
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The old SR-IOV API is implemented in ``rtnetlink`` Netlink family as part of
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the ``RTM_GETLINK`` and ``RTM_SETLINK`` commands. On the driver side
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it consists of a number of ``ndo_set_vf_*`` and ``ndo_get_vf_*`` callbacks.
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Since the legacy APIs do not integrate well with the rest of the stack
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the API is considered frozen; no new functionality or extensions
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will be accepted. New drivers should not implement the uncommon callbacks;
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namely the following callbacks are off limits:
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- ``ndo_get_vf_port``
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- ``ndo_set_vf_port``
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- ``ndo_set_vf_rss_query_en``
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