[ceph.git] / ceph / src / seastar / dpdk / doc / guides / nics / overview.rst

..  SPDX-License-Identifier: BSD-3-Clause
    Copyright 2016 6WIND S.A.

Overview of Networking Drivers
==============================

The networking drivers may be classified in two categories:

- physical for real devices
- virtual for emulated devices

Some physical devices may be shaped through a virtual layer as for
SR-IOV.
The interface seen in the virtual environment is a VF (Virtual Function).

The ethdev layer exposes an API to use the networking functions
of these devices.
The bottom half part of ethdev is implemented by the drivers.
Thus some features may not be implemented.

There are more differences between drivers regarding some internal properties,
portability or even documentation availability.
Most of these differences are summarized below.

More details about features can be found in :doc:`features`.

.. _table_net_pmd_features:

.. include:: overview_table.txt

.. Note::

   Features marked with "P" are partially supported. Refer to the appropriate
   NIC guide in the following sections for details.
Commit	Line	Data
9f95a23c	1	.. SPDX-License-Identifier: BSD-3-Clause
7c673cae FG	2	Copyright 2016 6WIND S.A.
7c673cae FG	3
7c673cae FG	4	Overview of Networking Drivers
	5	==============================
	6
	7	The networking drivers may be classified in two categories:
	8
	9	- physical for real devices
	10	- virtual for emulated devices
	11
	12	Some physical devices may be shaped through a virtual layer as for
	13	SR-IOV.
	14	The interface seen in the virtual environment is a VF (Virtual Function).
	15
	16	The ethdev layer exposes an API to use the networking functions
	17	of these devices.
	18	The bottom half part of ethdev is implemented by the drivers.
	19	Thus some features may not be implemented.
	20
	21	There are more differences between drivers regarding some internal properties,
	22	portability or even documentation availability.
	23	Most of these differences are summarized below.
	24
9f95a23c TL	25	More details about features can be found in :doc:`features`.
9f95a23c TL	26
7c673cae FG	27	.. _table_net_pmd_features:
7c673cae FG	28
7c673cae FG	29	.. include:: overview_table.txt
	30
	31	.. Note::
	32
	33	Features marked with "P" are partially supported. Refer to the appropriate
	34	NIC guide in the following sections for details.