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diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst new file mode 100644 index 00000000..37ffbc68 --- /dev/null +++ b/doc/guides/nics/features.rst @@ -0,0 +1,890 @@ +.. 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. + +Features Overview +================= + +This section explains the supported features that are listed in the +:doc:`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 +------------------ + +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``. +* **[uses] user config**: ``dev_conf.rx_adv_conf.rss_conf``. +* **[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``. +* **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``. +* **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_rx_conf``. +* **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``. +* **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``. + + +.. _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``. +* **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``. +* **[uses] user config**: ``dev_conf.rx_adv_conf.dcb_rx_conf``. +* **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``. +* **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``. +* **[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`` |