2. Features Overview

This section explains the supported features that are listed in the Overview of Networking Drivers.

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.

2.1. Speed capabilities

Supports getting the speed capabilities that the current device is capable of.

  • [provides] rte_eth_dev_info: speed_capa:RTE_ETH_LINK_SPEED_*.
  • [related] API: rte_eth_dev_info_get().

2.5. 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.

2.6. Queue status event

Supports queue enable/disable events.

  • [uses] rte_eth_event_type: RTE_ETH_EVENT_QUEUE_STATE.

2.7. 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().

2.8. Lock-free Tx queue

If a PMD advertises RTE_ETH_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can invoke rte_eth_tx_burst() concurrently on the same Tx queue without SW lock.

  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_MT_LOCKFREE.
  • [provides] rte_eth_dev_info: tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_MT_LOCKFREE.
  • [related] API: rte_eth_tx_burst().

2.9. Fast mbuf free

Supports optimization for fast release of mbufs following successful Tx. Requires that per queue, all mbufs come from the same mempool and has refcnt = 1.

  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE.
  • [provides] rte_eth_dev_info: tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE.

2.10. 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().

2.11. 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().

2.12. 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().

2.13. Scattered Rx

Supports receiving segmented mbufs.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_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.

2.14. Buffer split on Rx

Scatters the packets being received on specified boundaries to segmented mbufs.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT.
  • [uses] rte_eth_rxconf: rx_conf.rx_seg, rx_conf.rx_nseg.
  • [implements] datapath: Buffer Split functionality.
  • [provides] rte_eth_dev_info: rx_offload_capa:RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT.
  • [related] API: rte_eth_rx_queue_setup().

2.15. LRO

Supports Large Receive Offload.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_TCP_LRO. dev_conf.rxmode.max_lro_pkt_size.
  • [implements] datapath: LRO functionality.
  • [implements] rte_eth_dev_data: lro.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_LRO, mbuf.tso_segsz.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_TCP_LRO.
  • [provides] rte_eth_dev_info: max_lro_pkt_size.

2.16. TSO

Supports TCP Segmentation Offloading.

  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_TCP_TSO.
  • [uses] rte_eth_desc_lim: nb_seg_max, nb_mtu_seg_max.
  • [uses] mbuf: mbuf.ol_flags: RTE_MBUF_F_TX_TCP_SEG, RTE_MBUF_F_TX_IPV4, RTE_MBUF_F_TX_IPV6, RTE_MBUF_F_TX_IP_CKSUM.
  • [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,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_TCP_TSO,RTE_ETH_TX_OFFLOAD_UDP_TSO.

2.17. 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().

2.18. 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().

2.19. Unicast MAC filter

Supports adding MAC addresses to enable incoming filtering of 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().

2.20. 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().

2.21. RSS hash

Supports RSS hashing on RX.

  • [uses] user config: dev_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_RSS_FLAG.
  • [uses] user config: dev_conf.rx_adv_conf.rss_conf.
  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_RSS_HASH.
  • [provides] rte_eth_dev_info: flow_type_rss_offloads.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_RSS_HASH, mbuf.rss.

2.22. Inner RSS

Supports RX RSS hashing on Inner headers.

  • [uses] rte_flow_action_rss: level.
  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_RSS_HASH.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_RSS_HASH, mbuf.rss.

2.23. 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().

2.24. 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().

2.25. VMDq

Supports Virtual Machine Device Queues (VMDq).

  • [uses] user config: dev_conf.rxmode.mq_mode = RTE_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.

2.26. SR-IOV

Driver supports creating Virtual Functions.

  • [implements] rte_eth_dev_data: sriov.

2.27. DCB

Supports Data Center Bridging (DCB).

  • [uses] user config: dev_conf.rxmode.mq_mode = RTE_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().

2.28. VLAN filter

Supports filtering of a VLAN Tag identifier.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_VLAN_FILTER.
  • [implements] eth_dev_ops: vlan_filter_set.
  • [related] API: rte_eth_dev_vlan_filter().

2.29. 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().

2.30. 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().

2.31. Inline crypto

Supports inline crypto processing defined by rte_security library to perform crypto operations of security protocol while packet is received in NIC. NIC is not aware of protocol operations. See Security library and PMD documentation for more details.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_SECURITY,
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_SECURITY.
  • [uses] mbuf: mbuf.l2_len.
  • [implements] rte_security_ops: session_create, session_update, session_stats_get, session_destroy, set_pkt_metadata, capabilities_get.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_SECURITY, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_SECURITY.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_SEC_OFFLOAD, mbuf.ol_flags:RTE_MBUF_F_TX_SEC_OFFLOAD, mbuf.ol_flags:RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED.
  • [provides] rte_security_ops, capabilities_get: action: RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO

2.32. Inline protocol

Supports inline protocol processing defined by rte_security library to perform protocol processing for the security protocol (e.g. IPsec, MACSEC) while the packet is received at NIC. The NIC is capable of understanding the security protocol operations. See security library and PMD documentation for more details.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_SECURITY,
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_SECURITY.
  • [uses] mbuf: mbuf.l2_len.
  • [implements] rte_security_ops: session_create, session_update, session_stats_get, session_destroy, set_pkt_metadata, get_userdata, capabilities_get.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_SECURITY, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_SECURITY.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_SEC_OFFLOAD, mbuf.ol_flags:RTE_MBUF_F_TX_SEC_OFFLOAD, mbuf.ol_flags:RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED.
  • [provides] rte_security_ops, capabilities_get: action: RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL

2.33. CRC offload

Supports CRC stripping by hardware. A PMD assumed to support CRC stripping by default. PMD should advertise if it supports keeping CRC.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_KEEP_CRC.

2.34. VLAN offload

Supports VLAN offload to hardware.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_VLAN_STRIP,RTE_ETH_RX_OFFLOAD_VLAN_FILTER,RTE_ETH_RX_OFFLOAD_VLAN_EXTEND.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_VLAN_INSERT.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_VLAN, mbuf.vlan_tci.
  • [implements] eth_dev_ops: vlan_offload_set.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_VLAN_STRIPPED, mbuf.ol_flags:RTE_MBUF_F_RX_VLAN mbuf.vlan_tci.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_VLAN_STRIP, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_VLAN_INSERT.
  • [related] API: rte_eth_dev_set_vlan_offload(), rte_eth_dev_get_vlan_offload().

2.35. QinQ offload

Supports QinQ (queue in queue) offload.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_QINQ_STRIP.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_QINQ_INSERT.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_QINQ, mbuf.vlan_tci_outer.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_QINQ_STRIPPED, mbuf.ol_flags:RTE_MBUF_F_RX_QINQ, mbuf.ol_flags:RTE_MBUF_F_RX_VLAN_STRIPPED, mbuf.ol_flags:RTE_MBUF_F_RX_VLAN mbuf.vlan_tci, mbuf.vlan_tci_outer.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_QINQ_STRIP, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_QINQ_INSERT.

2.36. FEC

Supports Forward error correction. Forward error correction (FEC) is a bit error correction mode. It adds error correction information to data packets at the transmit end, and uses the error correction information to correct the bit errors generated during data packet transmission at the receive end. This improves signal quality but also brings a delay to signals. This function can be enabled or disabled as required.

  • [implements] eth_dev_ops: fec_get_capability, fec_get, fec_set.
  • [provides] rte_eth_fec_capa: speed:RTE_ETH_SPEED_NUM_*, capa:RTE_ETH_FEC_MODE_TO_CAPA().
  • [related] API: rte_eth_fec_get_capability(), rte_eth_fec_get(), rte_eth_fec_set().

2.37. L3 checksum offload

Supports L3 checksum offload.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_IPV4_CKSUM.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_IPV4_CKSUM.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_IP_CKSUM, mbuf.ol_flags:RTE_MBUF_F_TX_IPV4 | RTE_MBUF_F_TX_IPV6.
  • [uses] mbuf: mbuf.l2_len, mbuf.l3_len.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_IP_CKSUM_UNKNOWN | RTE_MBUF_F_RX_IP_CKSUM_BAD | RTE_MBUF_F_RX_IP_CKSUM_GOOD | RTE_MBUF_F_RX_IP_CKSUM_NONE.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_IPV4_CKSUM, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_IPV4_CKSUM.

2.38. L4 checksum offload

Supports L4 checksum offload.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_UDP_CKSUM,RTE_ETH_RX_OFFLOAD_TCP_CKSUM,RTE_ETH_RX_OFFLOAD_SCTP_CKSUM.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_UDP_CKSUM,RTE_ETH_TX_OFFLOAD_TCP_CKSUM,RTE_ETH_TX_OFFLOAD_SCTP_CKSUM.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_IPV4 | RTE_MBUF_F_TX_IPV6, mbuf.ol_flags:RTE_MBUF_F_TX_L4_NO_CKSUM | RTE_MBUF_F_TX_TCP_CKSUM | RTE_MBUF_F_TX_SCTP_CKSUM | RTE_MBUF_F_TX_UDP_CKSUM.
  • [uses] mbuf: mbuf.l2_len, mbuf.l3_len.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_L4_CKSUM_UNKNOWN | RTE_MBUF_F_RX_L4_CKSUM_BAD | RTE_MBUF_F_RX_L4_CKSUM_GOOD | RTE_MBUF_F_RX_L4_CKSUM_NONE.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_UDP_CKSUM,RTE_ETH_RX_OFFLOAD_TCP_CKSUM,RTE_ETH_RX_OFFLOAD_SCTP_CKSUM, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_UDP_CKSUM,RTE_ETH_TX_OFFLOAD_TCP_CKSUM,RTE_ETH_TX_OFFLOAD_SCTP_CKSUM.

2.39. Timestamp offload

Supports Timestamp.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_TIMESTAMP.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_TIMESTAMP.
  • [provides] mbuf: mbuf.timestamp.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa: RTE_ETH_RX_OFFLOAD_TIMESTAMP.
  • [related] eth_dev_ops: read_clock.

2.40. MACsec offload

Supports MACsec.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_MACSEC_STRIP.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_MACSEC_INSERT.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_MACSEC.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_MACSEC_STRIP, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_MACSEC_INSERT.

2.41. Inner L3 checksum

Supports inner packet L3 checksum.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_IP_CKSUM, mbuf.ol_flags:RTE_MBUF_F_TX_IPV4 | RTE_MBUF_F_TX_IPV6, mbuf.ol_flags:RTE_MBUF_F_TX_OUTER_IP_CKSUM, mbuf.ol_flags:RTE_MBUF_F_TX_OUTER_IPV4 | RTE_MBUF_F_TX_OUTER_IPV6.
  • [uses] mbuf: mbuf.outer_l2_len, mbuf.outer_l3_len.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_OUTER_IP_CKSUM_BAD.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM.

2.42. Inner L4 checksum

Supports inner packet L4 checksum.

  • [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM.
  • [provides] mbuf: mbuf.ol_flags:RTE_MBUF_F_RX_OUTER_L4_CKSUM_UNKNOWN | RTE_MBUF_F_RX_OUTER_L4_CKSUM_BAD | RTE_MBUF_F_RX_OUTER_L4_CKSUM_GOOD | RTE_MBUF_F_RX_OUTER_L4_CKSUM_INVALID.
  • [uses] rte_eth_txconf,rte_eth_txmode: offloads:RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM.
  • [uses] mbuf: mbuf.ol_flags:RTE_MBUF_F_TX_OUTER_IPV4 | RTE_MBUF_F_TX_OUTER_IPV6. mbuf.ol_flags:RTE_MBUF_F_TX_OUTER_UDP_CKSUM.
  • [uses] mbuf: mbuf.outer_l2_len, mbuf.outer_l3_len.
  • [provides] rte_eth_dev_info: rx_offload_capa,rx_queue_offload_capa:RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM, tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM.

2.43. Shared Rx queue

Supports shared Rx queue for ports in same Rx domain of a switch domain.

  • [uses] rte_eth_dev_info: dev_capa:RTE_ETH_DEV_CAPA_RXQ_SHARE.
  • [uses] rte_eth_dev_info，rte_eth_switch_info: rx_domain, domain_id.
  • [uses] rte_eth_rxconf: share_group, share_qid.
  • [provides] mbuf: mbuf.port.

2.44. Packet type parsing

Supports packet type parsing and returns a list of supported types. Allows application to set ptypes it is interested in.

  • [implements] eth_dev_ops: dev_supported_ptypes_get,
  • [related] API: rte_eth_dev_get_supported_ptypes(), rte_eth_dev_set_ptypes(), dev_ptypes_set.
  • [provides] mbuf: mbuf.packet_type.

2.45. 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().

2.46. Rx descriptor status

Supports check the status of a Rx descriptor. When rx_descriptor_status is used, status can be “Available”, “Done” or “Unavailable”.

  • [implements] rte_eth_dev: rx_descriptor_status.
  • [related] API: rte_eth_rx_descriptor_status().

2.47. Tx descriptor status

Supports checking the status of a Tx descriptor. Status can be “Full”, “Done” or “Unavailable.”

  • [implements] rte_eth_dev: tx_descriptor_status.
  • [related] API: rte_eth_tx_descriptor_status().

2.48. 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().

2.49. 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().

2.50. 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().

2.51. Traffic manager

Supports Traffic manager.

  • [implements] rte_tm_ops: capabilities_get, shaper_profile_add, hierarchy_commit and so on.
  • [related] API: rte_tm_capabilities_get(), rte_tm_shaper_profile_add(), rte_tm_hierarchy_commit() and so on.

2.52. FW version

Supports getting device hardware firmware information.

  • [implements] eth_dev_ops: fw_version_get.
  • [related] API: rte_eth_dev_fw_version_get().

2.53. 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().

2.54. Module EEPROM dump

Supports getting information and data of plugin module eeprom.

  • [implements] eth_dev_ops: get_module_info, get_module_eeprom.
  • [related] API: rte_eth_dev_get_module_info(), rte_eth_dev_get_module_eeprom().

2.55. 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().

2.56. 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().

2.57. Multiprocess aware

Driver can be used for primary-secondary process model.

2.58. FreeBSD

Supports running on FreeBSD.

2.59. Linux

Supports running on Linux.

2.60. Windows

Supports running on Windows.

2.61. ARMv7

Support armv7 architecture.

2.62. ARMv8

Support armv8a (64bit) architecture.

2.63. Power8

Support PowerPC architecture.

2.64. x86-32

Support 32bits x86 architecture.

2.65. x86-64

Support 64bits x86 architecture.

2.66. Usage doc

Documentation describes usage.

See doc/guides/nics/*.rst

2.67. Design doc

Documentation describes design.

See doc/guides/nics/*.rst.

2.68. Perf doc

Documentation describes performance values.

See dpdk.org/doc/perf/*.

2.69. Runtime Rx queue setup

Supports Rx queue setup after device started.

  • [provides] rte_eth_dev_info: dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP.
  • [related] API: rte_eth_dev_info_get().

2.70. Runtime Tx queue setup

Supports Tx queue setup after device started.

  • [provides] rte_eth_dev_info: dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP.
  • [related] API: rte_eth_dev_info_get().

2.71. Burst mode info

Supports to get Rx/Tx packet burst mode information.

  • [implements] eth_dev_ops: rx_burst_mode_get, tx_burst_mode_get.
  • [related] API: rte_eth_rx_burst_mode_get(), rte_eth_tx_burst_mode_get().

2.72. PMD power management using monitor addresses

Supports getting a monitoring condition to use together with Ethernet PMD power management (see Power Management for more details).

  • [implements] eth_dev_ops: get_monitor_addr

2.73. 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
  • uc_hash_table_set
  • uc_all_hash_table_set
  • udp_tunnel_port_add
  • udp_tunnel_port_del
  • tx_pkt_prepare