doc/guides/nics/features.rst

   1 ..  BSD LICENSE
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  18
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  29     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31 Features Overview
  32 =================
  33
  34 This section explains the supported features that are listed in the
  35 :doc:`overview`.
  36
  37 As a guide to implementers it also shows the structs where the features are
  38 defined and the APIs that can be use to get/set the values.
  39
  40 Following tags used for feature details, these are from driver point of view:
  41
  42 ``[uses]``       : Driver uses some kind of input from the application.
  43
  44 ``[implements]`` : Driver implements a functionality.
  45
  46 ``[provides]``   : Driver provides some kind of data to the application. It is possible
  47 to provide data by implementing some function, but "provides" is used
  48 for cases where provided data can't be represented simply by a function.
  49
  50 ``[related]``    : Related API with that feature.
  51
  52
  53 .. _nic_features_speed_capabilities:
  54
  55 Speed capabilities
  56 ------------------
  57
  58 Supports getting the speed capabilities that the current device is capable of.
  59
  60 * **[provides] rte_eth_dev_info**: ``speed_capa:ETH_LINK_SPEED_*``.
  61 * **[related]  API**: ``rte_eth_dev_info_get()``.
  62
  63
  64 .. _nic_features_link_status:
  65
  66 Link status
  67 -----------
  68
  69 Supports getting the link speed, duplex mode and link state (up/down).
  70
  71 * **[implements] eth_dev_ops**: ``link_update``.
  72 * **[implements] rte_eth_dev_data**: ``dev_link``.
  73 * **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
  74
  75
  76 .. _nic_features_link_status_event:
  77
  78 Link status event
  79 -----------------
  80
  81 Supports Link Status Change interrupts.
  82
  83 * **[uses]       user config**: ``dev_conf.intr_conf.lsc``.
  84 * **[uses]       rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_LSC``.
  85 * **[uses]       rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_LSC``.
  86 * **[implements] rte_eth_dev_data**: ``dev_link``.
  87 * **[provides]   rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_LSC``.
  88 * **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
  89
  90
  91 .. _nic_features_removal_event:
  92
  93 Removal event
  94 -------------
  95
  96 Supports device removal interrupts.
  97
  98 * **[uses]     user config**: ``dev_conf.intr_conf.rmv``.
  99 * **[uses]     rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_RMV``.
 100 * **[uses]     rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_RMV``.
 101 * **[provides] rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_RMV``.
 102
 103
 104 .. _nic_features_queue_status_event:
 105
 106 Queue status event
 107 ------------------
 108
 109 Supports queue enable/disable events.
 110
 111 * **[uses] rte_eth_event_type**: ``RTE_ETH_EVENT_QUEUE_STATE``.
 112
 113
 114 .. _nic_features_rx_interrupt:
 115
 116 Rx interrupt
 117 ------------
 118
 119 Supports Rx interrupts.
 120
 121 * **[uses]       user config**: ``dev_conf.intr_conf.rxq``.
 122 * **[implements] eth_dev_ops**: ``rx_queue_intr_enable``, ``rx_queue_intr_disable``.
 123 * **[related]    API**: ``rte_eth_dev_rx_intr_enable()``, ``rte_eth_dev_rx_intr_disable()``.
 124
 125
 126 .. _nic_features_lock-free_tx_queue:
 127
 128 Lock-free Tx queue
 129 ------------------
 130
 131 If a PMD advertises DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
 132 invoke rte_eth_tx_burst() concurrently on the same Tx queue without SW lock.
 133
 134 * **[uses]    rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MT_LOCKFREE``.
 135 * **[provides] rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MT_LOCKFREE``.
 136 * **[related]  API**: ``rte_eth_tx_burst()``.
 137
 138
 139 .. _nic_features_fast_mbuf_free:
 140
 141 Fast mbuf free
 142 --------------
 143
 144 Supports optimization for fast release of mbufs following successful Tx.
 145 Requires that per queue, all mbufs come from the same mempool and has refcnt = 1.
 146
 147 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
 148 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
 149
 150
 151 .. _nic_features_free_tx_mbuf_on_demand:
 152
 153 Free Tx mbuf on demand
 154 ----------------------
 155
 156 Supports freeing consumed buffers on a Tx ring.
 157
 158 * **[implements] eth_dev_ops**: ``tx_done_cleanup``.
 159 * **[related]    API**: ``rte_eth_tx_done_cleanup()``.
 160
 161
 162 .. _nic_features_queue_start_stop:
 163
 164 Queue start/stop
 165 ----------------
 166
 167 Supports starting/stopping a specific Rx/Tx queue of a port.
 168
 169 * **[implements] eth_dev_ops**: ``rx_queue_start``, ``rx_queue_stop``, ``tx_queue_start``,
 170   ``tx_queue_stop``.
 171 * **[related]    API**: ``rte_eth_dev_rx_queue_start()``, ``rte_eth_dev_rx_queue_stop()``,
 172   ``rte_eth_dev_tx_queue_start()``, ``rte_eth_dev_tx_queue_stop()``.
 173
 174
 175 .. _nic_features_mtu_update:
 176
 177 MTU update
 178 ----------
 179
 180 Supports updating port MTU.
 181
 182 * **[implements] eth_dev_ops**: ``mtu_set``.
 183 * **[implements] rte_eth_dev_data**: ``mtu``.
 184 * **[provides]   rte_eth_dev_info**: ``max_rx_pktlen``.
 185 * **[related]    API**: ``rte_eth_dev_set_mtu()``, ``rte_eth_dev_get_mtu()``.
 186
 187
 188 .. _nic_features_jumbo_frame:
 189
 190 Jumbo frame
 191 -----------
 192
 193 Supports Rx jumbo frames.
 194
 195 * **[uses]    rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_JUMBO_FRAME``.
 196   ``dev_conf.rxmode.max_rx_pkt_len``.
 197 * **[related] rte_eth_dev_info**: ``max_rx_pktlen``.
 198 * **[related] API**: ``rte_eth_dev_set_mtu()``.
 199
 200
 201 .. _nic_features_scattered_rx:
 202
 203 Scattered Rx
 204 ------------
 205
 206 Supports receiving segmented mbufs.
 207
 208 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_SCATTER``.
 209 * **[implements] datapath**: ``Scattered Rx function``.
 210 * **[implements] rte_eth_dev_data**: ``scattered_rx``.
 211 * **[provides]   eth_dev_ops**: ``rxq_info_get:scattered_rx``.
 212 * **[related]    eth_dev_ops**: ``rx_pkt_burst``.
 213
 214
 215 .. _nic_features_lro:
 216
 217 LRO
 218 ---
 219
 220 Supports Large Receive Offload.
 221
 222 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TCP_LRO``.
 223 * **[implements] datapath**: ``LRO functionality``.
 224 * **[implements] rte_eth_dev_data**: ``lro``.
 225 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_LRO``, ``mbuf.tso_segsz``.
 226 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_TCP_LRO``.
 227
 228
 229 .. _nic_features_tso:
 230
 231 TSO
 232 ---
 233
 234 Supports TCP Segmentation Offloading.
 235
 236 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_TCP_TSO``.
 237 * **[uses]       rte_eth_desc_lim**: ``nb_seg_max``, ``nb_mtu_seg_max``.
 238 * **[uses]       mbuf**: ``mbuf.ol_flags:PKT_TX_TCP_SEG``.
 239 * **[uses]       mbuf**: ``mbuf.tso_segsz``, ``mbuf.l2_len``, ``mbuf.l3_len``, ``mbuf.l4_len``.
 240 * **[implements] datapath**: ``TSO functionality``.
 241 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_TCP_TSO,DEV_TX_OFFLOAD_UDP_TSO``.
 242
 243
 244 .. _nic_features_promiscuous_mode:
 245
 246 Promiscuous mode
 247 ----------------
 248
 249 Supports enabling/disabling promiscuous mode for a port.
 250
 251 * **[implements] eth_dev_ops**: ``promiscuous_enable``, ``promiscuous_disable``.
 252 * **[implements] rte_eth_dev_data**: ``promiscuous``.
 253 * **[related]    API**: ``rte_eth_promiscuous_enable()``, ``rte_eth_promiscuous_disable()``,
 254   ``rte_eth_promiscuous_get()``.
 255
 256
 257 .. _nic_features_allmulticast_mode:
 258
 259 Allmulticast mode
 260 -----------------
 261
 262 Supports enabling/disabling receiving multicast frames.
 263
 264 * **[implements] eth_dev_ops**: ``allmulticast_enable``, ``allmulticast_disable``.
 265 * **[implements] rte_eth_dev_data**: ``all_multicast``.
 266 * **[related]    API**: ``rte_eth_allmulticast_enable()``,
 267   ``rte_eth_allmulticast_disable()``, ``rte_eth_allmulticast_get()``.
 268
 269
 270 .. _nic_features_unicast_mac_filter:
 271
 272 Unicast MAC filter
 273 ------------------
 274
 275 Supports adding MAC addresses to enable whitelist filtering to accept packets.
 276
 277 * **[implements] eth_dev_ops**: ``mac_addr_set``, ``mac_addr_add``, ``mac_addr_remove``.
 278 * **[implements] rte_eth_dev_data**: ``mac_addrs``.
 279 * **[related]    API**: ``rte_eth_dev_default_mac_addr_set()``,
 280   ``rte_eth_dev_mac_addr_add()``, ``rte_eth_dev_mac_addr_remove()``,
 281   ``rte_eth_macaddr_get()``.
 282
 283
 284 .. _nic_features_multicast_mac_filter:
 285
 286 Multicast MAC filter
 287 --------------------
 288
 289 Supports setting multicast addresses to filter.
 290
 291 * **[implements] eth_dev_ops**: ``set_mc_addr_list``.
 292 * **[related]    API**: ``rte_eth_dev_set_mc_addr_list()``.
 293
 294
 295 .. _nic_features_rss_hash:
 296
 297 RSS hash
 298 --------
 299
 300 Supports RSS hashing on RX.
 301
 302 * **[uses]     user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_RSS_FLAG``.
 303 * **[uses]     user config**: ``dev_conf.rx_adv_conf.rss_conf``.
 304 * **[provides] rte_eth_dev_info**: ``flow_type_rss_offloads``.
 305 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 306
 307
 308 .. _nic_features_rss_key_update:
 309
 310 RSS key update
 311 --------------
 312
 313 Supports configuration of Receive Side Scaling (RSS) hash computation. Updating
 314 Receive Side Scaling (RSS) hash key.
 315
 316 * **[implements] eth_dev_ops**: ``rss_hash_update``, ``rss_hash_conf_get``.
 317 * **[provides]   rte_eth_dev_info**: ``hash_key_size``.
 318 * **[related]    API**: ``rte_eth_dev_rss_hash_update()``,
 319   ``rte_eth_dev_rss_hash_conf_get()``.
 320
 321
 322 .. _nic_features_rss_reta_update:
 323
 324 RSS reta update
 325 ---------------
 326
 327 Supports updating Redirection Table of the Receive Side Scaling (RSS).
 328
 329 * **[implements] eth_dev_ops**: ``reta_update``, ``reta_query``.
 330 * **[provides]   rte_eth_dev_info**: ``reta_size``.
 331 * **[related]    API**: ``rte_eth_dev_rss_reta_update()``, ``rte_eth_dev_rss_reta_query()``.
 332
 333
 334 .. _nic_features_vmdq:
 335
 336 VMDq
 337 ----
 338
 339 Supports Virtual Machine Device Queues (VMDq).
 340
 341 * **[uses] user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_VMDQ_FLAG``.
 342 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 343 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_rx_conf``.
 344 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 345 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 346
 347
 348 .. _nic_features_sriov:
 349
 350 SR-IOV
 351 ------
 352
 353 Driver supports creating Virtual Functions.
 354
 355 * **[implements] rte_eth_dev_data**: ``sriov``.
 356
 357 .. _nic_features_dcb:
 358
 359 DCB
 360 ---
 361
 362 Supports Data Center Bridging (DCB).
 363
 364 * **[uses]       user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_DCB_FLAG``.
 365 * **[uses]       user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 366 * **[uses]       user config**: ``dev_conf.rx_adv_conf.dcb_rx_conf``.
 367 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 368 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 369 * **[implements] eth_dev_ops**: ``get_dcb_info``.
 370 * **[related]    API**: ``rte_eth_dev_get_dcb_info()``.
 371
 372
 373 .. _nic_features_vlan_filter:
 374
 375 VLAN filter
 376 -----------
 377
 378 Supports filtering of a VLAN Tag identifier.
 379
 380 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_FILTER``.
 381 * **[implements] eth_dev_ops**: ``vlan_filter_set``.
 382 * **[related]    API**: ``rte_eth_dev_vlan_filter()``.
 383
 384
 385 .. _nic_features_ethertype_filter:
 386
 387 Ethertype filter
 388 ----------------
 389
 390 Supports filtering on Ethernet type.
 391
 392 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_ETHERTYPE``.
 393 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 394
 395 .. _nic_features_ntuple_filter:
 396
 397 N-tuple filter
 398 --------------
 399
 400 Supports filtering on N-tuple values.
 401
 402 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_NTUPLE``.
 403 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 404
 405
 406 .. _nic_features_syn_filter:
 407
 408 SYN filter
 409 ----------
 410
 411 Supports TCP syn filtering.
 412
 413 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_SYN``.
 414 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 415
 416
 417 .. _nic_features_tunnel_filter:
 418
 419 Tunnel filter
 420 -------------
 421
 422 Supports tunnel filtering.
 423
 424 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_TUNNEL``.
 425 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 426
 427
 428 .. _nic_features_flexible_filter:
 429
 430 Flexible filter
 431 ---------------
 432
 433 Supports a flexible (non-tuple or Ethertype) filter.
 434
 435 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FLEXIBLE``.
 436 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 437
 438
 439 .. _nic_features_hash_filter:
 440
 441 Hash filter
 442 -----------
 443
 444 Supports Hash filtering.
 445
 446 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_HASH``.
 447 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 448
 449
 450 .. _nic_features_flow_director:
 451
 452 Flow director
 453 -------------
 454
 455 Supports Flow Director style filtering to queues.
 456
 457 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FDIR``.
 458 * **[provides]   mbuf**: ``mbuf.ol_flags:`` ``PKT_RX_FDIR``, ``PKT_RX_FDIR_ID``,
 459   ``PKT_RX_FDIR_FLX``.
 460 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 461
 462
 463 .. _nic_features_flow_control:
 464
 465 Flow control
 466 ------------
 467
 468 Supports configuring link flow control.
 469
 470 * **[implements] eth_dev_ops**: ``flow_ctrl_get``, ``flow_ctrl_set``,
 471   ``priority_flow_ctrl_set``.
 472 * **[related]    API**: ``rte_eth_dev_flow_ctrl_get()``, ``rte_eth_dev_flow_ctrl_set()``,
 473   ``rte_eth_dev_priority_flow_ctrl_set()``.
 474
 475
 476 .. _nic_features_flow_api:
 477
 478 Flow API
 479 --------
 480
 481 Supports the DPDK Flow API for generic filtering.
 482
 483 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_GENERIC``.
 484 * **[implements] rte_flow_ops**: ``All``.
 485
 486
 487 .. _nic_features_rate_limitation:
 488
 489 Rate limitation
 490 ---------------
 491
 492 Supports Tx rate limitation for a queue.
 493
 494 * **[implements] eth_dev_ops**: ``set_queue_rate_limit``.
 495 * **[related]    API**: ``rte_eth_set_queue_rate_limit()``.
 496
 497
 498 .. _nic_features_traffic_mirroring:
 499
 500 Traffic mirroring
 501 -----------------
 502
 503 Supports adding traffic mirroring rules.
 504
 505 * **[implements] eth_dev_ops**: ``mirror_rule_set``, ``mirror_rule_reset``.
 506 * **[related]    API**: ``rte_eth_mirror_rule_set()``, ``rte_eth_mirror_rule_reset()``.
 507
 508
 509 .. _nic_features_crc_offload:
 510
 511 CRC offload
 512 -----------
 513
 514 Supports CRC stripping by hardware.
 515
 516 * **[uses] rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_CRC_STRIP``.
 517
 518
 519 .. _nic_features_vlan_offload:
 520
 521 VLAN offload
 522 ------------
 523
 524 Supports VLAN offload to hardware.
 525
 526 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_STRIP,DEV_RX_OFFLOAD_VLAN_FILTER,DEV_RX_OFFLOAD_VLAN_EXTEND``.
 527 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_VLAN_INSERT``.
 528 * **[implements] eth_dev_ops**: ``vlan_offload_set``.
 529 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.vlan_tci``.
 530 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_VLAN_STRIP``,
 531   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_VLAN_INSERT``.
 532 * **[related]    API**: ``rte_eth_dev_set_vlan_offload()``,
 533   ``rte_eth_dev_get_vlan_offload()``.
 534
 535
 536 .. _nic_features_qinq_offload:
 537
 538 QinQ offload
 539 ------------
 540
 541 Supports QinQ (queue in queue) offload.
 542
 543 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_QINQ_STRIP``.
 544 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_QINQ_INSERT``.
 545 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_QINQ_PKT``.
 546 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_QINQ_STRIPPED``, ``mbuf.vlan_tci``,
 547    ``mbuf.vlan_tci_outer``.
 548 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_QINQ_STRIP``,
 549   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_QINQ_INSERT``.
 550
 551
 552 .. _nic_features_l3_checksum_offload:
 553
 554 L3 checksum offload
 555 -------------------
 556
 557 Supports L3 checksum offload.
 558
 559 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_IPV4_CKSUM``.
 560 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 561 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 562   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``.
 563 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_IP_CKSUM_UNKNOWN`` |
 564   ``PKT_RX_IP_CKSUM_BAD`` | ``PKT_RX_IP_CKSUM_GOOD`` |
 565   ``PKT_RX_IP_CKSUM_NONE``.
 566 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_IPV4_CKSUM``,
 567   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 568
 569
 570 .. _nic_features_l4_checksum_offload:
 571
 572 L4 checksum offload
 573 -------------------
 574
 575 Supports L4 checksum offload.
 576
 577 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM``.
 578 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 579 * **[uses]     user config**: ``dev_conf.rxmode.hw_ip_checksum``.
 580 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 581   ``mbuf.ol_flags:PKT_TX_L4_NO_CKSUM`` | ``PKT_TX_TCP_CKSUM`` |
 582   ``PKT_TX_SCTP_CKSUM`` | ``PKT_TX_UDP_CKSUM``.
 583 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_L4_CKSUM_UNKNOWN`` |
 584   ``PKT_RX_L4_CKSUM_BAD`` | ``PKT_RX_L4_CKSUM_GOOD`` |
 585   ``PKT_RX_L4_CKSUM_NONE``.
 586 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM``,
 587   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 588
 589 .. _nic_features_hw_timestamp:
 590
 591 Timestamp offload
 592 -----------------
 593
 594 Supports Timestamp.
 595
 596 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TIMESTAMP``.
 597 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_TIMESTAMP``.
 598 * **[provides] mbuf**: ``mbuf.timestamp``.
 599 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa: DEV_RX_OFFLOAD_TIMESTAMP``.
 600
 601 .. _nic_features_macsec_offload:
 602
 603 MACsec offload
 604 --------------
 605
 606 Supports MACsec.
 607
 608 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_MACSEC_STRIP``.
 609 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 610 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_MACSEC``.
 611 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_MACSEC_STRIP``,
 612   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 613
 614
 615 .. _nic_features_inner_l3_checksum:
 616
 617 Inner L3 checksum
 618 -----------------
 619
 620 Supports inner packet L3 checksum.
 621
 622 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``.
 623 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 624 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 625   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 626   ``mbuf.ol_flags:PKT_TX_OUTER_IP_CKSUM``,
 627   ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``.
 628 * **[uses]     mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
 629 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_EIP_CKSUM_BAD``.
 630 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``,
 631   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 632
 633
 634 .. _nic_features_inner_l4_checksum:
 635
 636 Inner L4 checksum
 637 -----------------
 638
 639 Supports inner packet L4 checksum.
 640
 641
 642 .. _nic_features_packet_type_parsing:
 643
 644 Packet type parsing
 645 -------------------
 646
 647 Supports packet type parsing and returns a list of supported types.
 648
 649 * **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``.
 650 * **[related]    API**: ``rte_eth_dev_get_supported_ptypes()``.
 651
 652
 653 .. _nic_features_timesync:
 654
 655 Timesync
 656 --------
 657
 658 Supports IEEE1588/802.1AS timestamping.
 659
 660 * **[implements] eth_dev_ops**: ``timesync_enable``, ``timesync_disable``
 661   ``timesync_read_rx_timestamp``, ``timesync_read_tx_timestamp``,
 662   ``timesync_adjust_time``, ``timesync_read_time``, ``timesync_write_time``.
 663 * **[related]    API**: ``rte_eth_timesync_enable()``, ``rte_eth_timesync_disable()``,
 664   ``rte_eth_timesync_read_rx_timestamp()``,
 665   ``rte_eth_timesync_read_tx_timestamp``, ``rte_eth_timesync_adjust_time()``,
 666   ``rte_eth_timesync_read_time()``, ``rte_eth_timesync_write_time()``.
 667
 668
 669 .. _nic_features_rx_descriptor_status:
 670
 671 Rx descriptor status
 672 --------------------
 673
 674 Supports check the status of a Rx descriptor. When ``rx_descriptor_status`` is
 675 used, status can be "Available", "Done" or "Unavailable". When
 676 ``rx_descriptor_done`` is used, status can be "DD bit is set" or "DD bit is
 677 not set".
 678
 679 * **[implements] eth_dev_ops**: ``rx_descriptor_status``.
 680 * **[related]    API**: ``rte_eth_rx_descriptor_status()``.
 681 * **[implements] eth_dev_ops**: ``rx_descriptor_done``.
 682 * **[related]    API**: ``rte_eth_rx_descriptor_done()``.
 683
 684
 685 .. _nic_features_tx_descriptor_status:
 686
 687 Tx descriptor status
 688 --------------------
 689
 690 Supports checking the status of a Tx descriptor. Status can be "Full", "Done"
 691 or "Unavailable."
 692
 693 * **[implements] eth_dev_ops**: ``tx_descriptor_status``.
 694 * **[related]    API**: ``rte_eth_tx_descriptor_status()``.
 695
 696
 697 .. _nic_features_basic_stats:
 698
 699 Basic stats
 700 -----------
 701
 702 Support basic statistics such as: ipackets, opackets, ibytes, obytes,
 703 imissed, ierrors, oerrors, rx_nombuf.
 704
 705 And per queue stats: q_ipackets, q_opackets, q_ibytes, q_obytes, q_errors.
 706
 707 These apply to all drivers.
 708
 709 * **[implements] eth_dev_ops**: ``stats_get``, ``stats_reset``.
 710 * **[related]    API**: ``rte_eth_stats_get``, ``rte_eth_stats_reset()``.
 711
 712
 713 .. _nic_features_extended_stats:
 714
 715 Extended stats
 716 --------------
 717
 718 Supports Extended Statistics, changes from driver to driver.
 719
 720 * **[implements] eth_dev_ops**: ``xstats_get``, ``xstats_reset``, ``xstats_get_names``.
 721 * **[implements] eth_dev_ops**: ``xstats_get_by_id``, ``xstats_get_names_by_id``.
 722 * **[related]    API**: ``rte_eth_xstats_get()``, ``rte_eth_xstats_reset()``,
 723   ``rte_eth_xstats_get_names``, ``rte_eth_xstats_get_by_id()``,
 724   ``rte_eth_xstats_get_names_by_id()``, ``rte_eth_xstats_get_id_by_name()``.
 725
 726
 727 .. _nic_features_stats_per_queue:
 728
 729 Stats per queue
 730 ---------------
 731
 732 Supports configuring per-queue stat counter mapping.
 733
 734 * **[implements] eth_dev_ops**: ``queue_stats_mapping_set``.
 735 * **[related]    API**: ``rte_eth_dev_set_rx_queue_stats_mapping()``,
 736   ``rte_eth_dev_set_tx_queue_stats_mapping()``.
 737
 738
 739 .. _nic_features_fw_version:
 740
 741 FW version
 742 ----------
 743
 744 Supports getting device hardware firmware information.
 745
 746 * **[implements] eth_dev_ops**: ``fw_version_get``.
 747 * **[related]    API**: ``rte_eth_dev_fw_version_get()``.
 748
 749
 750 .. _nic_features_eeprom_dump:
 751
 752 EEPROM dump
 753 -----------
 754
 755 Supports getting/setting device eeprom data.
 756
 757 * **[implements] eth_dev_ops**: ``get_eeprom_length``, ``get_eeprom``, ``set_eeprom``.
 758 * **[related]    API**: ``rte_eth_dev_get_eeprom_length()``, ``rte_eth_dev_get_eeprom()``,
 759   ``rte_eth_dev_set_eeprom()``.
 760
 761
 762 .. _nic_features_register_dump:
 763
 764 Registers dump
 765 --------------
 766
 767 Supports retrieving device registers and registering attributes (number of
 768 registers and register size).
 769
 770 * **[implements] eth_dev_ops**: ``get_reg``.
 771 * **[related]    API**: ``rte_eth_dev_get_reg_info()``.
 772
 773
 774 .. _nic_features_led:
 775
 776 LED
 777 ---
 778
 779 Supports turning on/off a software controllable LED on a device.
 780
 781 * **[implements] eth_dev_ops**: ``dev_led_on``, ``dev_led_off``.
 782 * **[related]    API**: ``rte_eth_led_on()``, ``rte_eth_led_off()``.
 783
 784
 785 .. _nic_features_multiprocess_aware:
 786
 787 Multiprocess aware
 788 ------------------
 789
 790 Driver can be used for primary-secondary process model.
 791
 792
 793 .. _nic_features_bsd_nic_uio:
 794
 795 BSD nic_uio
 796 -----------
 797
 798 BSD ``nic_uio`` module supported.
 799
 800
 801 .. _nic_features_linux_uio:
 802
 803 Linux UIO
 804 ---------
 805
 806 Works with ``igb_uio`` kernel module.
 807
 808 * **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``igb_uio``.
 809
 810 .. _nic_features_linux_vfio:
 811
 812 Linux VFIO
 813 ----------
 814
 815 Works with ``vfio-pci`` kernel module.
 816
 817 * **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``vfio-pci``.
 818
 819 .. _nic_features_other_kdrv:
 820
 821 Other kdrv
 822 ----------
 823
 824 Kernel module other than above ones supported.
 825
 826
 827 .. _nic_features_armv7:
 828
 829 ARMv7
 830 -----
 831
 832 Support armv7 architecture.
 833
 834 Use ``defconfig_arm-armv7a-*-*``.
 835
 836
 837 .. _nic_features_armv8:
 838
 839 ARMv8
 840 -----
 841
 842 Support armv8a (64bit) architecture.
 843
 844 Use ``defconfig_arm64-armv8a-*-*``
 845
 846
 847 .. _nic_features_power8:
 848
 849 Power8
 850 ------
 851
 852 Support PowerPC architecture.
 853
 854 Use ``defconfig_ppc_64-power8-*-*``
 855
 856 .. _nic_features_x86-32:
 857
 858 x86-32
 859 ------
 860
 861 Support 32bits x86 architecture.
 862
 863 Use ``defconfig_x86_x32-native-*-*`` and ``defconfig_i686-native-*-*``.
 864
 865
 866 .. _nic_features_x86-64:
 867
 868 x86-64
 869 ------
 870
 871 Support 64bits x86 architecture.
 872
 873 Use ``defconfig_x86_64-native-*-*``.
 874
 875
 876 .. _nic_features_usage_doc:
 877
 878 Usage doc
 879 ---------
 880
 881 Documentation describes usage.
 882
 883 See ``doc/guides/nics/*.rst``
 884
 885
 886 .. _nic_features_design_doc:
 887
 888 Design doc
 889 ----------
 890
 891 Documentation describes design.
 892
 893 See ``doc/guides/nics/*.rst``.
 894
 895
 896 .. _nic_features_perf_doc:
 897
 898 Perf doc
 899 --------
 900
 901 Documentation describes performance values.
 902
 903 See ``dpdk.org/doc/perf/*``.
 904
 905
 906
 907 .. _nic_features_other:
 908
 909 Other dev ops not represented by a Feature
 910 ------------------------------------------
 911
 912 * ``rxq_info_get``
 913 * ``txq_info_get``
 914 * ``vlan_tpid_set``
 915 * ``vlan_strip_queue_set``
 916 * ``vlan_pvid_set``
 917 * ``rx_queue_count``
 918 * ``l2_tunnel_offload_set``
 919 * ``uc_hash_table_set``
 920 * ``uc_all_hash_table_set``
 921 * ``udp_tunnel_port_add``
 922 * ``udp_tunnel_port_del``
 923 * ``l2_tunnel_eth_type_conf``
 924 * ``l2_tunnel_offload_set``
 925 * ``tx_pkt_prepare``