[PATCH v6] doc: document NIC features

[Ferruh Yigit <ferruh.yigit@intel.com>]

Document NIC features, add more information about them and add more
implementation related support.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Signed-off-by: John McNamara <john.mcnamara@intel.com>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
Cc: Olivier Matz <olivier.matz@6wind.com>

v6:
* Apply code review comments and minor updates.
* Add new feature "Lock-free Tx queue".
* Add more data for "Inner L3 checksum".

v5:
* Add flow_type_rss_offloads and RTE_PMD_REGISTER_KMOD_DEP

v4:
* Apply review comments from Andrew Rybchenko
* Add tags to the information, to clarify in, out, related data.

v3:
* received updates from John, Thanks!

v2:
* Add more details, mbuf and API fields
* Formatting added

TODO:
- Not all features all fully documented, need help from community

- Instead of having a new file, it would be nice to auto generate this
file from defaults.ini, and perhaps add extra information as comment to
that file.

- Some features are implementing eth_dev_ops and some are updates in
Rx/Tx path. These features can be grouped together.

- A link from overview file per feature would be nice.
---
 doc/guides/nics/overview.rst          |   4 +
 doc/guides/nics/overview_features.rst | 887 ++++++++++++++++++++++++++++++++++
 2 files changed, 891 insertions(+)
 create mode 100644 doc/guides/nics/overview_features.rst

diff --git a/doc/guides/nics/overview.rst b/doc/guides/nics/overview.rst
index 757a3c901..2412ed7ec 100644
--- a/doc/guides/nics/overview.rst
+++ b/doc/guides/nics/overview.rst
@@ -27,6 +27,8 @@
     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+.. _nic_overview:
+
 Overview of Networking Drivers
 ==============================
 
@@ -48,6 +50,8 @@ There are more differences between drivers regarding some internal properties,
 portability or even documentation availability.
 Most of these differences are summarized below.
 
+More detail about features can be found :ref:`here <NIC_Overview_Features>`.
+
 .. _table_net_pmd_features:
 
 .. include:: overview_table.txt
diff --git a/doc/guides/nics/overview_features.rst b/doc/guides/nics/overview_features.rst
new file mode 100644
index 000000000..5fe36d1c0
--- /dev/null
+++ b/doc/guides/nics/overview_features.rst
@@ -0,0 +1,887 @@
+..  BSD LICENSE
+    Copyright(c) 2017 Intel Corporation. All rights reserved.
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+    * Neither the name of Intel Corporation nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+:orphan:
+
+.. _nic_overview_features:
+
+Overview features
+=================
+
+This section explains the supported features that are listed in the
+:ref:`nic_overview`.
+
+As a guide to implementers it also shows the structs where the features are
+defined and the APIs that can be use to get/set the values.
+
+Following tags used for feature details, these are from driver point of view:
+
+``[uses]``       : Driver uses some kind of input from the application.
+
+``[implements]`` : Driver implements a functionality.
+
+``[provides]``   : Driver provides some kind of data to the application. It is possible
+to provide data by implementing some function, but "provides" is used
+for cases where provided data can't be represented simply by a function.
+
+``[related]``    : Related API with that feature.
+
+
+.. _nic_features_speed_capabilities:
+
+Speed capabilities
+------------------
+
+Supports getting the speed capabilities that the current device is capable of.
+
+* **[provides] rte_eth_dev_info**: ``speed_capa:ETH_LINK_SPEED_*``.
+* **[related]  API**: ``rte_eth_dev_info_get()``.
+
+
+.. _nic_features_link_status:
+
+Link status
+-----------
+
+Supports getting the link speed, duplex mode and link state (up/down).
+
+* **[implements] eth_dev_ops**: ``link_update``.
+* **[implements] rte_eth_dev_data**: ``dev_link``.
+* **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
+
+
+.. _nic_features_link_status_event:
+
+Link status event
+-----------------
+
+Supports Link Status Change interrupts.
+
+* **[uses]       user config**: ``dev_conf.intr_conf.lsc``.
+* **[uses]       rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_LSC``.
+* **[uses]       rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_LSC``.
+* **[implements] rte_eth_dev_data**: ``dev_link``.
+* **[provides]   rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_LSC``.
+* **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
+
+
+.. _nic_features_removal_event:
+
+Removal event
+-------------
+
+Supports device removal interrupts.
+
+* **[uses]     user config**: ``dev_conf.intr_conf.rmv``.
+* **[uses]     rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_RMV``.
+* **[uses]     rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_RMV``.
+* **[provides] rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_RMV``.
+
+
+.. _nic_features_queue_status_event:
+
+Queue status event
+------------------
+
+Supports queue enable/disable events.
+
+* **[uses] rte_eth_event_type**: ``RTE_ETH_EVENT_QUEUE_STATE``.
+
+
+.. _nic_features_rx_interrupt:
+
+Rx interrupt
+------------
+
+Supports Rx interrupts.
+
+* **[uses]       user config**: ``dev_conf.intr_conf.rxq``.
+* **[implements] eth_dev_ops**: ``rx_queue_intr_enable``, ``rx_queue_intr_disable``.
+* **[related]    API**: ``rte_eth_dev_rx_intr_enable()``, ``rte_eth_dev_rx_intr_disable()``.
+
+
+.. _nic_features_lock-free_tx_queue:
+
+Lock-free Tx queue
+------------------
+
+Supports Rx interrupts.
+
+If a PMD advertises DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
+invoke rte_eth_tx_burst() concurrently on the same Tx queue without SW lock.
+
+* **[provides] rte_eth_dev_info**: ``tx_offload_capa:DEV_TX_OFFLOAD_MT_LOCKFREE``.
+* **[related]  API**: ``rte_eth_tx_burst()``.
+
+
+.. _nic_features_free_tx_mbuf_on_demand:
+
+Free Tx mbuf on demand
+----------------------
+
+Supports freeing consumed buffers on a Tx ring.
+
+* **[implements] eth_dev_ops**: ``tx_done_cleanup``.
+* **[related]    API**: ``rte_eth_tx_done_cleanup()``.
+
+
+.. _nic_features_queue_start_stop:
+
+Queue start/stop
+----------------
+
+Supports starting/stopping a specific Rx/Tx queue of a port.
+
+* **[implements] eth_dev_ops**: ``rx_queue_start``, ``rx_queue_stop``, ``tx_queue_start``,
+  ``tx_queue_stop``.
+* **[related]    API**: ``rte_eth_dev_rx_queue_start()``, ``rte_eth_dev_rx_queue_stop()``,
+  ``rte_eth_dev_tx_queue_start()``, ``rte_eth_dev_tx_queue_stop()``.
+
+
+.. _nic_features_mtu_update:
+
+MTU update
+----------
+
+Supports updating port MTU.
+
+* **[implements] eth_dev_ops**: ``mtu_set``.
+* **[implements] rte_eth_dev_data**: ``mtu``.
+* **[provides]   rte_eth_dev_info**: ``max_rx_pktlen``.
+* **[related]    API**: ``rte_eth_dev_set_mtu()``, ``rte_eth_dev_get_mtu()``.
+
+
+.. _nic_features_jumbo_frame:
+
+Jumbo frame
+-----------
+
+Supports Rx jumbo frames.
+
+* **[uses]    user config**: ``dev_conf.rxmode.jumbo_frame``,
+  ``dev_conf.rxmode.max_rx_pkt_len``.
+* **[related] rte_eth_dev_info**: ``max_rx_pktlen``.
+* **[related] API**: ``rte_eth_dev_set_mtu()``.
+
+
+.. _nic_features_scattered_rx:
+
+Scattered Rx
+------------
+
+Supports receiving segmented mbufs.
+
+* **[uses]       user config**: ``dev_conf.rxmode.enable_scatter``.
+* **[implements] datapath**: ``Scattered Rx function``.
+* **[implements] rte_eth_dev_data**: ``scattered_rx``.
+* **[provides]   eth_dev_ops**: ``rxq_info_get:scattered_rx``.
+* **[related]    eth_dev_ops**: ``rx_pkt_burst``.
+
+
+.. _nic_features_lro:
+
+LRO
+---
+
+Supports Large Receive Offload.
+
+* **[uses]       user config**: ``dev_conf.rxmode.enable_lro``.
+* **[implements] datapath**: ``LRO functionality``.
+* **[implements] rte_eth_dev_data**: ``lro``.
+* **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_LRO``, ``mbuf.tso_segsz``.
+* **[provides]   rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_TCP_LRO``.
+
+
+.. _nic_features_tso:
+
+TSO
+---
+
+Supports TCP Segmentation Offloading.
+
+* **[uses]       rte_eth_desc_lim**: ``nb_seg_max``, ``nb_mtu_seg_max``.
+* **[uses]       mbuf**: ``mbuf.ol_flags:PKT_TX_TCP_SEG``.
+* **[uses]       mbuf**: ``mbuf.tso_segsz``, ``mbuf.l2_len``, ``mbuf.l3_len``, ``mbuf.l4_len``.
+* **[implements] datapath**: ``TSO functionality``.
+* **[provides]   rte_eth_dev_info**: ``tx_offload_capa:DEV_TX_OFFLOAD_TCP_TSO,DEV_TX_OFFLOAD_UDP_TSO``.
+
+
+.. _nic_features_promiscuous_mode:
+
+Promiscuous mode
+----------------
+
+Supports enabling/disabling promiscuous mode for a port.
+
+* **[implements] eth_dev_ops**: ``promiscuous_enable``, ``promiscuous_disable``.
+* **[implements] rte_eth_dev_data**: ``promiscuous``.
+* **[related]    API**: ``rte_eth_promiscuous_enable()``, ``rte_eth_promiscuous_disable()``,
+  ``rte_eth_promiscuous_get()``.
+
+
+.. _nic_features_allmulticast_mode:
+
+Allmulticast mode
+-----------------
+
+Supports enabling/disabling receiving multicast frames.
+
+* **[implements] eth_dev_ops**: ``allmulticast_enable``, ``allmulticast_disable``.
+* **[implements] rte_eth_dev_data**: ``all_multicast``.
+* **[related]    API**: ``rte_eth_allmulticast_enable()``,
+  ``rte_eth_allmulticast_disable()``, ``rte_eth_allmulticast_get()``.
+
+
+.. _nic_features_unicast_mac_filter:
+
+Unicast MAC filter
+------------------
+
+Supports adding MAC addresses to enable whitelist filtering to accept packets.
+
+* **[implements] eth_dev_ops**: ``mac_addr_set``, ``mac_addr_add``, ``mac_addr_remove``.
+* **[implements] rte_eth_dev_data**: ``mac_addrs``.
+* **[related]    API**: ``rte_eth_dev_default_mac_addr_set()``,
+  ``rte_eth_dev_mac_addr_add()``, ``rte_eth_dev_mac_addr_remove()``,
+  ``rte_eth_macaddr_get()``.
+
+
+.. _nic_features_multicast_mac_filter:
+
+Multicast MAC filter
+--------------------
+
+Supports setting multicast addresses to filter.
+
+* **[implements] eth_dev_ops**: ``set_mc_addr_list``.
+* **[related]    API**: ``rte_eth_dev_set_mc_addr_list()``.
+
+
+.. _nic_features_rss_hash:
+
+RSS hash
+--------
+
+Supports RSS hashing on RX.
+
+* **[uses]     user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_RSS_FLAG``.
+* **[provides] rte_eth_dev_info**: ``flow_type_rss_offloads``.
+* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
+
+
+.. _nic_features_rss_key_update:
+
+RSS key update
+--------------
+
+Supports configuration of Receive Side Scaling (RSS) hash computation. Updating
+Receive Side Scaling (RSS) hash key.
+
+* **[implements] eth_dev_ops**: ``rss_hash_update``, ``rss_hash_conf_get``.
+* **[provides]   rte_eth_dev_info**: ``hash_key_size``.
+* **[related]    API**: ``rte_eth_dev_rss_hash_update()``,
+  ``rte_eth_dev_rss_hash_conf_get()``.
+
+
+.. _nic_features_rss_reta_update:
+
+RSS reta update
+---------------
+
+Supports updating Redirection Table of the Receive Side Scaling (RSS).
+
+* **[implements] eth_dev_ops**: ``reta_update``, ``reta_query``.
+* **[provides]   rte_eth_dev_info**: ``reta_size``.
+* **[related]    API**: ``rte_eth_dev_rss_reta_update()``, ``rte_eth_dev_rss_reta_query()``.
+
+
+.. _nic_features_vmdq:
+
+VMDq
+----
+
+Supports Virtual Machine Device Queues (VMDq).
+
+* **[uses] user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_VMDQ_FLAG``.
+
+
+.. _nic_features_sriov:
+
+SR-IOV
+------
+
+Driver supports creating Virtual Functions.
+
+* **[implements] rte_eth_dev_data**: ``sriov``.
+
+.. _nic_features_dcb:
+
+DCB
+---
+
+Supports Data Center Bridging (DCB).
+
+* **[uses]       user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_DCB_FLAG``.
+* **[implements] eth_dev_ops**: ``get_dcb_info``.
+* **[related]    API**: ``rte_eth_dev_get_dcb_info()``.
+
+
+.. _nic_features_vlan_filter:
+
+VLAN filter
+-----------
+
+Supports filtering of a VLAN Tag identifier.
+
+* **[uses]       user config**: ``dev_conf.rxmode.hw_vlan_filter``.
+* **[implements] eth_dev_ops**: ``vlan_filter_set``.
+* **[related]    API**: ``rte_eth_dev_vlan_filter()``.
+
+
+.. _nic_features_ethertype_filter:
+
+Ethertype filter
+----------------
+
+Supports filtering on Ethernet type.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_ETHERTYPE``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+.. _nic_features_ntuple_filter:
+
+N-tuple filter
+--------------
+
+Supports filtering on N-tuple values.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_NTUPLE``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_syn_filter:
+
+SYN filter
+----------
+
+Supports TCP syn filtering.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_SYN``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_tunnel_filter:
+
+Tunnel filter
+-------------
+
+Supports tunnel filtering.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_TUNNEL``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_flexible_filter:
+
+Flexible filter
+---------------
+
+Supports a flexible (non-tuple or Ethertype) filter.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FLEXIBLE``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_hash_filter:
+
+Hash filter
+-----------
+
+Supports Hash filtering.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_HASH``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_flow_director:
+
+Flow director
+-------------
+
+Supports Flow Director style filtering to queues.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FDIR``.
+* **[provides]   mbuf**: ``mbuf.ol_flags:`` ``PKT_RX_FDIR``, ``PKT_RX_FDIR_ID``,
+  ``PKT_RX_FDIR_FLX``.
+* **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
+
+
+.. _nic_features_flow_control:
+
+Flow control
+------------
+
+Supports configuring link flow control.
+
+* **[implements] eth_dev_ops**: ``flow_ctrl_get``, ``flow_ctrl_set``,
+  ``priority_flow_ctrl_set``.
+* **[related]    API**: ``rte_eth_dev_flow_ctrl_get()``, ``rte_eth_dev_flow_ctrl_set()``,
+  ``rte_eth_dev_priority_flow_ctrl_set()``.
+
+
+.. _nic_features_flow_api:
+
+Flow API
+--------
+
+Supports the DPDK Flow API for generic filtering.
+
+* **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_GENERIC``.
+* **[implements] rte_flow_ops**: ``All``.
+
+
+.. _nic_features_rate_limitation:
+
+Rate limitation
+---------------
+
+Supports Tx rate limitation for a queue.
+
+* **[implements] eth_dev_ops**: ``set_queue_rate_limit``.
+* **[related]    API**: ``rte_eth_set_queue_rate_limit()``.
+
+
+.. _nic_features_traffic_mirroring:
+
+Traffic mirroring
+-----------------
+
+Supports adding traffic mirroring rules.
+
+* **[implements] eth_dev_ops**: ``mirror_rule_set``, ``mirror_rule_reset``.
+* **[related]    API**: ``rte_eth_mirror_rule_set()``, ``rte_eth_mirror_rule_reset()``.
+
+
+.. _nic_features_crc_offload:
+
+CRC offload
+-----------
+
+Supports CRC stripping by hardware.
+
+* **[uses] user config**: ``dev_conf.rxmode.hw_strip_crc``.
+
+
+.. _nic_features_vlan_offload:
+
+VLAN offload
+------------
+
+Supports VLAN offload to hardware.
+
+* **[uses]       user config**: ``dev_conf.rxmode.hw_vlan_strip``,
+  ``dev_conf.rxmode.hw_vlan_filter``, ``dev_conf.rxmode.hw_vlan_extend``.
+* **[implements] eth_dev_ops**: ``vlan_offload_set``.
+* **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.vlan_tci``.
+* **[provides]   rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_VLAN_STRIP``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_VLAN_INSERT``.
+* **[related]    API**: ``rte_eth_dev_set_vlan_offload()``,
+  ``rte_eth_dev_get_vlan_offload()``.
+
+
+.. _nic_features_qinq_offload:
+
+QinQ offload
+------------
+
+Supports QinQ (queue in queue) offload.
+
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_QINQ_PKT``.
+* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_QINQ_STRIPPED``, ``mbuf.vlan_tci``,
+   ``mbuf.vlan_tci_outer``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_QINQ_STRIP``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_QINQ_INSERT``.
+
+
+.. _nic_features_l3_checksum_offload:
+
+L3 checksum offload
+-------------------
+
+Supports L3 checksum offload.
+
+* **[uses]     user config**: ``dev_conf.rxmode.hw_ip_checksum``.
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
+  ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``.
+* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_IP_CKSUM_UNKNOWN`` |
+  ``PKT_RX_IP_CKSUM_BAD`` | ``PKT_RX_IP_CKSUM_GOOD`` |
+  ``PKT_RX_IP_CKSUM_NONE``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_IPV4_CKSUM``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_IPV4_CKSUM``.
+
+
+.. _nic_features_l4_checksum_offload:
+
+L4 checksum offload
+-------------------
+
+Supports L4 checksum offload.
+
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
+  ``mbuf.ol_flags:PKT_TX_L4_NO_CKSUM`` | ``PKT_TX_TCP_CKSUM`` |
+  ``PKT_TX_SCTP_CKSUM`` | ``PKT_TX_UDP_CKSUM``.
+* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_L4_CKSUM_UNKNOWN`` |
+  ``PKT_RX_L4_CKSUM_BAD`` | ``PKT_RX_L4_CKSUM_GOOD`` |
+  ``PKT_RX_L4_CKSUM_NONE``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
+
+
+.. _nic_features_macsec_offload:
+
+MACsec offload
+--------------
+
+Supports MACsec.
+
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_MACSEC``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_MACSEC_STRIP``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_MACSEC_INSERT``.
+
+
+.. _nic_features_inner_l3_checksum:
+
+Inner L3 checksum
+-----------------
+
+Supports inner packet L3 checksum.
+
+* **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
+  ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
+  ``mbuf.ol_flags:PKT_TX_OUTER_IP_CKSUM``,
+  ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``.
+* **[uses]     mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
+* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_EIP_CKSUM_BAD``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``,
+  ``tx_offload_capa:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
+
+
+.. _nic_features_inner_l4_checksum:
+
+Inner L4 checksum
+-----------------
+
+Supports inner packet L4 checksum.
+
+
+.. _nic_features_packet_type_parsing:
+
+Packet type parsing
+-------------------
+
+Supports packet type parsing and returns a list of supported types.
+
+* **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``.
+* **[related]    API**: ``rte_eth_dev_get_supported_ptypes()``.
+
+
+.. _nic_features_timesync:
+
+Timesync
+--------
+
+Supports IEEE1588/802.1AS timestamping.
+
+* **[implements] eth_dev_ops**: ``timesync_enable``, ``timesync_disable``
+  ``timesync_read_rx_timestamp``, ``timesync_read_tx_timestamp``,
+  ``timesync_adjust_time``, ``timesync_read_time``, ``timesync_write_time``.
+* **[related]    API**: ``rte_eth_timesync_enable()``, ``rte_eth_timesync_disable()``,
+  ``rte_eth_timesync_read_rx_timestamp()``,
+  ``rte_eth_timesync_read_tx_timestamp``, ``rte_eth_timesync_adjust_time()``,
+  ``rte_eth_timesync_read_time()``, ``rte_eth_timesync_write_time()``.
+
+
+.. _nic_features_rx_descriptor_status:
+
+Rx descriptor status
+--------------------
+
+Supports check the status of a Rx descriptor. When ``rx_descriptor_status`` is
+used, status can be "Available", "Done" or "Unavailable". When
+``rx_descriptor_done`` is used, status can be "DD bit is set" or "DD bit is
+not set".
+
+* **[implements] eth_dev_ops**: ``rx_descriptor_status``.
+* **[related]    API**: ``rte_eth_rx_descriptor_status()``.
+* **[implements] eth_dev_ops**: ``rx_descriptor_done``.
+* **[related]    API**: ``rte_eth_rx_descriptor_done()``.
+
+
+.. _nic_features_tx_descriptor_status:
+
+Tx descriptor status
+--------------------
+
+Supports checking the status of a Tx descriptor. Status can be "Full", "Done"
+or "Unavailable."
+
+* **[implements] eth_dev_ops**: ``tx_descriptor_status``.
+* **[related]    API**: ``rte_eth_tx_descriptor_status()``.
+
+
+.. _nic_features_basic_stats:
+
+Basic stats
+-----------
+
+Support basic statistics such as: ipackets, opackets, ibytes, obytes,
+imissed, ierrors, oerrors, rx_nombuf.
+
+And per queue stats: q_ipackets, q_opackets, q_ibytes, q_obytes, q_errors.
+
+These apply to all drivers.
+
+* **[implements] eth_dev_ops**: ``stats_get``, ``stats_reset``.
+* **[related]    API**: ``rte_eth_stats_get``, ``rte_eth_stats_reset()``.
+
+
+.. _nic_features_extended_stats:
+
+Extended stats
+--------------
+
+Supports Extended Statistics, changes from driver to driver.
+
+* **[implements] eth_dev_ops**: ``xstats_get``, ``xstats_reset``, ``xstats_get_names``.
+* **[implements] eth_dev_ops**: ``xstats_get_by_id``, ``xstats_get_names_by_id``.
+* **[related]    API**: ``rte_eth_xstats_get()``, ``rte_eth_xstats_reset()``,
+  ``rte_eth_xstats_get_names``, ``rte_eth_xstats_get_by_id()``,
+  ``rte_eth_xstats_get_names_by_id()``, ``rte_eth_xstats_get_id_by_name()``.
+
+
+.. _nic_features_stats_per_queue:
+
+Stats per queue
+---------------
+
+Supports configuring per-queue stat counter mapping.
+
+* **[implements] eth_dev_ops**: ``queue_stats_mapping_set``.
+* **[related]    API**: ``rte_eth_dev_set_rx_queue_stats_mapping()``,
+  ``rte_eth_dev_set_tx_queue_stats_mapping()``.
+
+
+.. _nic_features_fw_version:
+
+FW version
+----------
+
+Supports getting device hardware firmware information.
+
+* **[implements] eth_dev_ops**: ``fw_version_get``.
+* **[related]    API**: ``rte_eth_dev_fw_version_get()``.
+
+
+.. _nic_features_eeprom_dump:
+
+EEPROM dump
+-----------
+
+Supports getting/setting device eeprom data.
+
+* **[implements] eth_dev_ops**: ``get_eeprom_length``, ``get_eeprom``, ``set_eeprom``.
+* **[related]    API**: ``rte_eth_dev_get_eeprom_length()``, ``rte_eth_dev_get_eeprom()``,
+  ``rte_eth_dev_set_eeprom()``.
+
+
+.. _nic_features_register_dump:
+
+Registers dump
+--------------
+
+Supports retrieving device registers and registering attributes (number of
+registers and register size).
+
+* **[implements] eth_dev_ops**: ``get_reg``.
+* **[related]    API**: ``rte_eth_dev_get_reg_info()``.
+
+
+.. _nic_features_led:
+
+LED
+---
+
+Supports turning on/off a software controllable LED on a device.
+
+* **[implements] eth_dev_ops**: ``dev_led_on``, ``dev_led_off``.
+* **[related]    API**: ``rte_eth_led_on()``, ``rte_eth_led_off()``.
+
+
+.. _nic_features_multiprocess_aware:
+
+Multiprocess aware
+------------------
+
+Driver can be used for primary-secondary process model.
+
+
+.. _nic_features_bsd_nic_uio:
+
+BSD nic_uio
+-----------
+
+BSD ``nic_uio`` module supported.
+
+
+.. _nic_features_linux_uio:
+
+Linux UIO
+---------
+
+Works with ``igb_uio`` kernel module.
+
+* **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``igb_uio``.
+
+.. _nic_features_linux_vfio:
+
+Linux VFIO
+----------
+
+Works with ``vfio-pci`` kernel module.
+
+* **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``vfio-pci``.
+
+.. _nic_features_other_kdrv:
+
+Other kdrv
+----------
+
+Kernel module other than above ones supported.
+
+
+.. _nic_features_armv7:
+
+ARMv7
+-----
+
+Support armv7 architecture.
+
+Use ``defconfig_arm-armv7a-*-*``.
+
+
+.. _nic_features_armv8:
+
+ARMv8
+-----
+
+Support armv8a (64bit) architecture.
+
+Use ``defconfig_arm64-armv8a-*-*``
+
+
+.. _nic_features_power8:
+
+Power8
+------
+
+Support PowerPC architecture.
+
+Use ``defconfig_ppc_64-power8-*-*``
+
+.. _nic_features_x86-32:
+
+x86-32
+------
+
+Support 32bits x86 architecture.
+
+Use ``defconfig_x86_x32-native-*-*`` and ``defconfig_i686-native-*-*``.
+
+
+.. _nic_features_x86-64:
+
+x86-64
+------
+
+Support 64bits x86 architecture.
+
+Use ``defconfig_x86_64-native-*-*``.
+
+
+.. _nic_features_usage_doc:
+
+Usage doc
+---------
+
+Documentation describes usage.
+
+See ``doc/guides/nics/\*.rst``
+
+
+.. _nic_features_design_doc:
+
+Design doc
+----------
+
+Documentation describes design.
+
+See ``doc/guides/nics/\*.rst``.
+
+
+.. _nic_features_perf_doc:
+
+Perf doc
+--------
+
+Documentation describes performance values.
+
+See ``dpdk.org/doc/perf/*``.
+
+
+
+.. _nic_features_other:
+
+Other dev ops not represented by a Feature
+------------------------------------------
+
+* ``rxq_info_get``
+* ``txq_info_get``
+* ``vlan_tpid_set``
+* ``vlan_strip_queue_set``
+* ``vlan_pvid_set``
+* ``rx_queue_count``
+* ``l2_tunnel_offload_set``
+* ``uc_hash_table_set``
+* ``uc_all_hash_table_set``
+* ``udp_tunnel_port_add``
+* ``udp_tunnel_port_del``
+* ``l2_tunnel_eth_type_conf``
+* ``l2_tunnel_offload_set``
+* ``tx_pkt_prepare``
-- 
2.13.0