doc/guides/nics/features.rst

   1 ..  SPDX-License-Identifier: BSD-3-Clause
   2     Copyright(c) 2017 Intel Corporation.
   3
   4 Features Overview
   5 =================
   6
   7 This section explains the supported features that are listed in the
   8 :doc:`overview`.
   9
  10 As a guide to implementers it also shows the structs where the features are
  11 defined and the APIs that can be use to get/set the values.
  12
  13 Following tags used for feature details, these are from driver point of view:
  14
  15 ``[uses]``       : Driver uses some kind of input from the application.
  16
  17 ``[implements]`` : Driver implements a functionality.
  18
  19 ``[provides]``   : Driver provides some kind of data to the application. It is possible
  20 to provide data by implementing some function, but "provides" is used
  21 for cases where provided data can't be represented simply by a function.
  22
  23 ``[related]``    : Related API with that feature.
  24
  25
  26 .. _nic_features_speed_capabilities:
  27
  28 Speed capabilities
  29 ------------------
  30
  31 Supports getting the speed capabilities that the current device is capable of.
  32
  33 * **[provides] rte_eth_dev_info**: ``speed_capa:ETH_LINK_SPEED_*``.
  34 * **[related]  API**: ``rte_eth_dev_info_get()``.
  35
  36
  37 .. _nic_features_link_status:
  38
  39 Link status
  40 -----------
  41
  42 Supports getting the link speed, duplex mode and link state (up/down).
  43
  44 * **[implements] eth_dev_ops**: ``link_update``.
  45 * **[implements] rte_eth_dev_data**: ``dev_link``.
  46 * **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
  47
  48
  49 .. _nic_features_link_status_event:
  50
  51 Link status event
  52 -----------------
  53
  54 Supports Link Status Change interrupts.
  55
  56 * **[uses]       user config**: ``dev_conf.intr_conf.lsc``.
  57 * **[uses]       rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_LSC``.
  58 * **[uses]       rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_LSC``.
  59 * **[implements] rte_eth_dev_data**: ``dev_link``.
  60 * **[provides]   rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_LSC``.
  61 * **[related]    API**: ``rte_eth_link_get()``, ``rte_eth_link_get_nowait()``.
  62
  63
  64 .. _nic_features_removal_event:
  65
  66 Removal event
  67 -------------
  68
  69 Supports device removal interrupts.
  70
  71 * **[uses]     user config**: ``dev_conf.intr_conf.rmv``.
  72 * **[uses]     rte_eth_dev_data**: ``dev_flags:RTE_ETH_DEV_INTR_RMV``.
  73 * **[uses]     rte_eth_event_type**: ``RTE_ETH_EVENT_INTR_RMV``.
  74 * **[provides] rte_pci_driver.drv_flags**: ``RTE_PCI_DRV_INTR_RMV``.
  75
  76
  77 .. _nic_features_queue_status_event:
  78
  79 Queue status event
  80 ------------------
  81
  82 Supports queue enable/disable events.
  83
  84 * **[uses] rte_eth_event_type**: ``RTE_ETH_EVENT_QUEUE_STATE``.
  85
  86
  87 .. _nic_features_rx_interrupt:
  88
  89 Rx interrupt
  90 ------------
  91
  92 Supports Rx interrupts.
  93
  94 * **[uses]       user config**: ``dev_conf.intr_conf.rxq``.
  95 * **[implements] eth_dev_ops**: ``rx_queue_intr_enable``, ``rx_queue_intr_disable``.
  96 * **[related]    API**: ``rte_eth_dev_rx_intr_enable()``, ``rte_eth_dev_rx_intr_disable()``.
  97
  98
  99 .. _nic_features_lock-free_tx_queue:
 100
 101 Lock-free Tx queue
 102 ------------------
 103
 104 If a PMD advertises DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
 105 invoke rte_eth_tx_burst() concurrently on the same Tx queue without SW lock.
 106
 107 * **[uses]    rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MT_LOCKFREE``.
 108 * **[provides] rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MT_LOCKFREE``.
 109 * **[related]  API**: ``rte_eth_tx_burst()``.
 110
 111
 112 .. _nic_features_fast_mbuf_free:
 113
 114 Fast mbuf free
 115 --------------
 116
 117 Supports optimization for fast release of mbufs following successful Tx.
 118 Requires that per queue, all mbufs come from the same mempool and has refcnt = 1.
 119
 120 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
 121 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MBUF_FAST_FREE``.
 122
 123
 124 .. _nic_features_free_tx_mbuf_on_demand:
 125
 126 Free Tx mbuf on demand
 127 ----------------------
 128
 129 Supports freeing consumed buffers on a Tx ring.
 130
 131 * **[implements] eth_dev_ops**: ``tx_done_cleanup``.
 132 * **[related]    API**: ``rte_eth_tx_done_cleanup()``.
 133
 134
 135 .. _nic_features_queue_start_stop:
 136
 137 Queue start/stop
 138 ----------------
 139
 140 Supports starting/stopping a specific Rx/Tx queue of a port.
 141
 142 * **[implements] eth_dev_ops**: ``rx_queue_start``, ``rx_queue_stop``, ``tx_queue_start``,
 143   ``tx_queue_stop``.
 144 * **[related]    API**: ``rte_eth_dev_rx_queue_start()``, ``rte_eth_dev_rx_queue_stop()``,
 145   ``rte_eth_dev_tx_queue_start()``, ``rte_eth_dev_tx_queue_stop()``.
 146
 147
 148 .. _nic_features_mtu_update:
 149
 150 MTU update
 151 ----------
 152
 153 Supports updating port MTU.
 154
 155 * **[implements] eth_dev_ops**: ``mtu_set``.
 156 * **[implements] rte_eth_dev_data**: ``mtu``.
 157 * **[provides]   rte_eth_dev_info**: ``max_rx_pktlen``.
 158 * **[related]    API**: ``rte_eth_dev_set_mtu()``, ``rte_eth_dev_get_mtu()``.
 159
 160
 161 .. _nic_features_jumbo_frame:
 162
 163 Jumbo frame
 164 -----------
 165
 166 Supports Rx jumbo frames.
 167
 168 * **[uses]    rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_JUMBO_FRAME``.
 169   ``dev_conf.rxmode.max_rx_pkt_len``.
 170 * **[related] rte_eth_dev_info**: ``max_rx_pktlen``.
 171 * **[related] API**: ``rte_eth_dev_set_mtu()``.
 172
 173
 174 .. _nic_features_scattered_rx:
 175
 176 Scattered Rx
 177 ------------
 178
 179 Supports receiving segmented mbufs.
 180
 181 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_SCATTER``.
 182 * **[implements] datapath**: ``Scattered Rx function``.
 183 * **[implements] rte_eth_dev_data**: ``scattered_rx``.
 184 * **[provides]   eth_dev_ops**: ``rxq_info_get:scattered_rx``.
 185 * **[related]    eth_dev_ops**: ``rx_pkt_burst``.
 186
 187
 188 .. _nic_features_lro:
 189
 190 LRO
 191 ---
 192
 193 Supports Large Receive Offload.
 194
 195 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TCP_LRO``.
 196 * **[implements] datapath**: ``LRO functionality``.
 197 * **[implements] rte_eth_dev_data**: ``lro``.
 198 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_LRO``, ``mbuf.tso_segsz``.
 199 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_TCP_LRO``.
 200
 201
 202 .. _nic_features_tso:
 203
 204 TSO
 205 ---
 206
 207 Supports TCP Segmentation Offloading.
 208
 209 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_TCP_TSO``.
 210 * **[uses]       rte_eth_desc_lim**: ``nb_seg_max``, ``nb_mtu_seg_max``.
 211 * **[uses]       mbuf**: ``mbuf.ol_flags:PKT_TX_TCP_SEG``.
 212 * **[uses]       mbuf**: ``mbuf.tso_segsz``, ``mbuf.l2_len``, ``mbuf.l3_len``, ``mbuf.l4_len``.
 213 * **[implements] datapath**: ``TSO functionality``.
 214 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_TCP_TSO,DEV_TX_OFFLOAD_UDP_TSO``.
 215
 216
 217 .. _nic_features_promiscuous_mode:
 218
 219 Promiscuous mode
 220 ----------------
 221
 222 Supports enabling/disabling promiscuous mode for a port.
 223
 224 * **[implements] eth_dev_ops**: ``promiscuous_enable``, ``promiscuous_disable``.
 225 * **[implements] rte_eth_dev_data**: ``promiscuous``.
 226 * **[related]    API**: ``rte_eth_promiscuous_enable()``, ``rte_eth_promiscuous_disable()``,
 227   ``rte_eth_promiscuous_get()``.
 228
 229
 230 .. _nic_features_allmulticast_mode:
 231
 232 Allmulticast mode
 233 -----------------
 234
 235 Supports enabling/disabling receiving multicast frames.
 236
 237 * **[implements] eth_dev_ops**: ``allmulticast_enable``, ``allmulticast_disable``.
 238 * **[implements] rte_eth_dev_data**: ``all_multicast``.
 239 * **[related]    API**: ``rte_eth_allmulticast_enable()``,
 240   ``rte_eth_allmulticast_disable()``, ``rte_eth_allmulticast_get()``.
 241
 242
 243 .. _nic_features_unicast_mac_filter:
 244
 245 Unicast MAC filter
 246 ------------------
 247
 248 Supports adding MAC addresses to enable whitelist filtering to accept packets.
 249
 250 * **[implements] eth_dev_ops**: ``mac_addr_set``, ``mac_addr_add``, ``mac_addr_remove``.
 251 * **[implements] rte_eth_dev_data**: ``mac_addrs``.
 252 * **[related]    API**: ``rte_eth_dev_default_mac_addr_set()``,
 253   ``rte_eth_dev_mac_addr_add()``, ``rte_eth_dev_mac_addr_remove()``,
 254   ``rte_eth_macaddr_get()``.
 255
 256
 257 .. _nic_features_multicast_mac_filter:
 258
 259 Multicast MAC filter
 260 --------------------
 261
 262 Supports setting multicast addresses to filter.
 263
 264 * **[implements] eth_dev_ops**: ``set_mc_addr_list``.
 265 * **[related]    API**: ``rte_eth_dev_set_mc_addr_list()``.
 266
 267
 268 .. _nic_features_rss_hash:
 269
 270 RSS hash
 271 --------
 272
 273 Supports RSS hashing on RX.
 274
 275 * **[uses]     user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_RSS_FLAG``.
 276 * **[uses]     user config**: ``dev_conf.rx_adv_conf.rss_conf``.
 277 * **[provides] rte_eth_dev_info**: ``flow_type_rss_offloads``.
 278 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 279
 280
 281 .. _nic_features_inner_rss:
 282
 283 Inner RSS
 284 ---------
 285
 286 Supports RX RSS hashing on Inner headers.
 287
 288 * **[users]    rte_flow_action_rss**: ``level``.
 289 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 290
 291
 292 .. _nic_features_rss_key_update:
 293
 294 RSS key update
 295 --------------
 296
 297 Supports configuration of Receive Side Scaling (RSS) hash computation. Updating
 298 Receive Side Scaling (RSS) hash key.
 299
 300 * **[implements] eth_dev_ops**: ``rss_hash_update``, ``rss_hash_conf_get``.
 301 * **[provides]   rte_eth_dev_info**: ``hash_key_size``.
 302 * **[related]    API**: ``rte_eth_dev_rss_hash_update()``,
 303   ``rte_eth_dev_rss_hash_conf_get()``.
 304
 305
 306 .. _nic_features_rss_reta_update:
 307
 308 RSS reta update
 309 ---------------
 310
 311 Supports updating Redirection Table of the Receive Side Scaling (RSS).
 312
 313 * **[implements] eth_dev_ops**: ``reta_update``, ``reta_query``.
 314 * **[provides]   rte_eth_dev_info**: ``reta_size``.
 315 * **[related]    API**: ``rte_eth_dev_rss_reta_update()``, ``rte_eth_dev_rss_reta_query()``.
 316
 317
 318 .. _nic_features_vmdq:
 319
 320 VMDq
 321 ----
 322
 323 Supports Virtual Machine Device Queues (VMDq).
 324
 325 * **[uses] user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_VMDQ_FLAG``.
 326 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 327 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_rx_conf``.
 328 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 329 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 330
 331
 332 .. _nic_features_sriov:
 333
 334 SR-IOV
 335 ------
 336
 337 Driver supports creating Virtual Functions.
 338
 339 * **[implements] rte_eth_dev_data**: ``sriov``.
 340
 341 .. _nic_features_dcb:
 342
 343 DCB
 344 ---
 345
 346 Supports Data Center Bridging (DCB).
 347
 348 * **[uses]       user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_DCB_FLAG``.
 349 * **[uses]       user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 350 * **[uses]       user config**: ``dev_conf.rx_adv_conf.dcb_rx_conf``.
 351 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 352 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 353 * **[implements] eth_dev_ops**: ``get_dcb_info``.
 354 * **[related]    API**: ``rte_eth_dev_get_dcb_info()``.
 355
 356
 357 .. _nic_features_vlan_filter:
 358
 359 VLAN filter
 360 -----------
 361
 362 Supports filtering of a VLAN Tag identifier.
 363
 364 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_FILTER``.
 365 * **[implements] eth_dev_ops**: ``vlan_filter_set``.
 366 * **[related]    API**: ``rte_eth_dev_vlan_filter()``.
 367
 368
 369 .. _nic_features_ethertype_filter:
 370
 371 Ethertype filter
 372 ----------------
 373
 374 Supports filtering on Ethernet type.
 375
 376 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_ETHERTYPE``.
 377 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 378
 379 .. _nic_features_ntuple_filter:
 380
 381 N-tuple filter
 382 --------------
 383
 384 Supports filtering on N-tuple values.
 385
 386 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_NTUPLE``.
 387 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 388
 389
 390 .. _nic_features_syn_filter:
 391
 392 SYN filter
 393 ----------
 394
 395 Supports TCP syn filtering.
 396
 397 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_SYN``.
 398 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 399
 400
 401 .. _nic_features_tunnel_filter:
 402
 403 Tunnel filter
 404 -------------
 405
 406 Supports tunnel filtering.
 407
 408 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_TUNNEL``.
 409 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 410
 411
 412 .. _nic_features_flexible_filter:
 413
 414 Flexible filter
 415 ---------------
 416
 417 Supports a flexible (non-tuple or Ethertype) filter.
 418
 419 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FLEXIBLE``.
 420 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 421
 422
 423 .. _nic_features_hash_filter:
 424
 425 Hash filter
 426 -----------
 427
 428 Supports Hash filtering.
 429
 430 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_HASH``.
 431 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 432
 433
 434 .. _nic_features_flow_director:
 435
 436 Flow director
 437 -------------
 438
 439 Supports Flow Director style filtering to queues.
 440
 441 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_FDIR``.
 442 * **[provides]   mbuf**: ``mbuf.ol_flags:`` ``PKT_RX_FDIR``, ``PKT_RX_FDIR_ID``,
 443   ``PKT_RX_FDIR_FLX``.
 444 * **[related]    API**: ``rte_eth_dev_filter_ctrl()``, ``rte_eth_dev_filter_supported()``.
 445
 446
 447 .. _nic_features_flow_control:
 448
 449 Flow control
 450 ------------
 451
 452 Supports configuring link flow control.
 453
 454 * **[implements] eth_dev_ops**: ``flow_ctrl_get``, ``flow_ctrl_set``,
 455   ``priority_flow_ctrl_set``.
 456 * **[related]    API**: ``rte_eth_dev_flow_ctrl_get()``, ``rte_eth_dev_flow_ctrl_set()``,
 457   ``rte_eth_dev_priority_flow_ctrl_set()``.
 458
 459
 460 .. _nic_features_flow_api:
 461
 462 Flow API
 463 --------
 464
 465 Supports the DPDK Flow API for generic filtering.
 466
 467 * **[implements] eth_dev_ops**: ``filter_ctrl:RTE_ETH_FILTER_GENERIC``.
 468 * **[implements] rte_flow_ops**: ``All``.
 469
 470
 471 .. _nic_features_rate_limitation:
 472
 473 Rate limitation
 474 ---------------
 475
 476 Supports Tx rate limitation for a queue.
 477
 478 * **[implements] eth_dev_ops**: ``set_queue_rate_limit``.
 479 * **[related]    API**: ``rte_eth_set_queue_rate_limit()``.
 480
 481
 482 .. _nic_features_traffic_mirroring:
 483
 484 Traffic mirroring
 485 -----------------
 486
 487 Supports adding traffic mirroring rules.
 488
 489 * **[implements] eth_dev_ops**: ``mirror_rule_set``, ``mirror_rule_reset``.
 490 * **[related]    API**: ``rte_eth_mirror_rule_set()``, ``rte_eth_mirror_rule_reset()``.
 491
 492
 493 .. _nic_features_inline_crypto_doc:
 494
 495 Inline crypto
 496 -------------
 497
 498 Supports inline crypto processing (eg. inline IPsec). See Security library and PMD documentation for more details.
 499
 500 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_SECURITY``,
 501 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_SECURITY``.
 502 * **[implements] rte_security_ops**: ``session_create``, ``session_update``,
 503   ``session_stats_get``, ``session_destroy``, ``set_pkt_metadata``, ``capabilities_get``.
 504 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_SECURITY``,
 505   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_SECURITY``.
 506 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD``,
 507   ``mbuf.ol_flags:PKT_TX_SEC_OFFLOAD``, ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD_FAILED``.
 508
 509
 510 .. _nic_features_crc_offload:
 511
 512 CRC offload
 513 -----------
 514
 515 Supports CRC stripping by hardware.
 516 A PMD assumed to support CRC stripping by default. PMD should advertise if it supports keeping CRC.
 517
 518 * **[uses] rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_KEEP_CRC``.
 519
 520
 521 .. _nic_features_vlan_offload:
 522
 523 VLAN offload
 524 ------------
 525
 526 Supports VLAN offload to hardware.
 527
 528 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_STRIP,DEV_RX_OFFLOAD_VLAN_FILTER,DEV_RX_OFFLOAD_VLAN_EXTEND``.
 529 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_VLAN_INSERT``.
 530 * **[implements] eth_dev_ops**: ``vlan_offload_set``.
 531 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.ol_flags:PKT_RX_VLAN`` ``mbuf.vlan_tci``.
 532 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_VLAN_STRIP``,
 533   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_VLAN_INSERT``.
 534 * **[related]    API**: ``rte_eth_dev_set_vlan_offload()``,
 535   ``rte_eth_dev_get_vlan_offload()``.
 536
 537
 538 .. _nic_features_qinq_offload:
 539
 540 QinQ offload
 541 ------------
 542
 543 Supports QinQ (queue in queue) offload.
 544
 545 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_QINQ_STRIP``.
 546 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_QINQ_INSERT``.
 547 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_QINQ_PKT``.
 548 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_QINQ_STRIPPED``, ``mbuf.ol_flags:PKT_RX_QINQ``,
 549   ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.ol_flags:PKT_RX_VLAN``
 550   ``mbuf.vlan_tci``, ``mbuf.vlan_tci_outer``.
 551 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_QINQ_STRIP``,
 552   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_QINQ_INSERT``.
 553
 554
 555 .. _nic_features_l3_checksum_offload:
 556
 557 L3 checksum offload
 558 -------------------
 559
 560 Supports L3 checksum offload.
 561
 562 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_IPV4_CKSUM``.
 563 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 564 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 565   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``.
 566 * **[uses]     mbuf**: ``mbuf.l2_len``, ``mbuf.l3_len``.
 567 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_IP_CKSUM_UNKNOWN`` |
 568   ``PKT_RX_IP_CKSUM_BAD`` | ``PKT_RX_IP_CKSUM_GOOD`` |
 569   ``PKT_RX_IP_CKSUM_NONE``.
 570 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_IPV4_CKSUM``,
 571   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 572
 573
 574 .. _nic_features_l4_checksum_offload:
 575
 576 L4 checksum offload
 577 -------------------
 578
 579 Supports L4 checksum offload.
 580
 581 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM,DEV_RX_OFFLOAD_SCTP_CKSUM``.
 582 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 583 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 584   ``mbuf.ol_flags:PKT_TX_L4_NO_CKSUM`` | ``PKT_TX_TCP_CKSUM`` |
 585   ``PKT_TX_SCTP_CKSUM`` | ``PKT_TX_UDP_CKSUM``.
 586 * **[uses]     mbuf**: ``mbuf.l2_len``, ``mbuf.l3_len``.
 587 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_L4_CKSUM_UNKNOWN`` |
 588   ``PKT_RX_L4_CKSUM_BAD`` | ``PKT_RX_L4_CKSUM_GOOD`` |
 589   ``PKT_RX_L4_CKSUM_NONE``.
 590 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM,DEV_RX_OFFLOAD_SCTP_CKSUM``,
 591   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 592
 593 .. _nic_features_hw_timestamp:
 594
 595 Timestamp offload
 596 -----------------
 597
 598 Supports Timestamp.
 599
 600 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TIMESTAMP``.
 601 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_TIMESTAMP``.
 602 * **[provides] mbuf**: ``mbuf.timestamp``.
 603 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa: DEV_RX_OFFLOAD_TIMESTAMP``.
 604
 605 .. _nic_features_macsec_offload:
 606
 607 MACsec offload
 608 --------------
 609
 610 Supports MACsec.
 611
 612 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_MACSEC_STRIP``.
 613 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 614 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_MACSEC``.
 615 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_MACSEC_STRIP``,
 616   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 617
 618
 619 .. _nic_features_inner_l3_checksum:
 620
 621 Inner L3 checksum
 622 -----------------
 623
 624 Supports inner packet L3 checksum.
 625
 626 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``.
 627 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 628 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 629   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 630   ``mbuf.ol_flags:PKT_TX_OUTER_IP_CKSUM``,
 631   ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``.
 632 * **[uses]     mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
 633 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_EIP_CKSUM_BAD``.
 634 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``,
 635   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 636
 637
 638 .. _nic_features_inner_l4_checksum:
 639
 640 Inner L4 checksum
 641 -----------------
 642
 643 Supports inner packet L4 checksum.
 644
 645
 646 .. _nic_features_packet_type_parsing:
 647
 648 Packet type parsing
 649 -------------------
 650
 651 Supports packet type parsing and returns a list of supported types.
 652
 653 * **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``.
 654 * **[related]    API**: ``rte_eth_dev_get_supported_ptypes()``.
 655
 656
 657 .. _nic_features_timesync:
 658
 659 Timesync
 660 --------
 661
 662 Supports IEEE1588/802.1AS timestamping.
 663
 664 * **[implements] eth_dev_ops**: ``timesync_enable``, ``timesync_disable``
 665   ``timesync_read_rx_timestamp``, ``timesync_read_tx_timestamp``,
 666   ``timesync_adjust_time``, ``timesync_read_time``, ``timesync_write_time``.
 667 * **[related]    API**: ``rte_eth_timesync_enable()``, ``rte_eth_timesync_disable()``,
 668   ``rte_eth_timesync_read_rx_timestamp()``,
 669   ``rte_eth_timesync_read_tx_timestamp``, ``rte_eth_timesync_adjust_time()``,
 670   ``rte_eth_timesync_read_time()``, ``rte_eth_timesync_write_time()``.
 671
 672
 673 .. _nic_features_rx_descriptor_status:
 674
 675 Rx descriptor status
 676 --------------------
 677
 678 Supports check the status of a Rx descriptor. When ``rx_descriptor_status`` is
 679 used, status can be "Available", "Done" or "Unavailable". When
 680 ``rx_descriptor_done`` is used, status can be "DD bit is set" or "DD bit is
 681 not set".
 682
 683 * **[implements] eth_dev_ops**: ``rx_descriptor_status``.
 684 * **[related]    API**: ``rte_eth_rx_descriptor_status()``.
 685 * **[implements] eth_dev_ops**: ``rx_descriptor_done``.
 686 * **[related]    API**: ``rte_eth_rx_descriptor_done()``.
 687
 688
 689 .. _nic_features_tx_descriptor_status:
 690
 691 Tx descriptor status
 692 --------------------
 693
 694 Supports checking the status of a Tx descriptor. Status can be "Full", "Done"
 695 or "Unavailable."
 696
 697 * **[implements] eth_dev_ops**: ``tx_descriptor_status``.
 698 * **[related]    API**: ``rte_eth_tx_descriptor_status()``.
 699
 700
 701 .. _nic_features_basic_stats:
 702
 703 Basic stats
 704 -----------
 705
 706 Support basic statistics such as: ipackets, opackets, ibytes, obytes,
 707 imissed, ierrors, oerrors, rx_nombuf.
 708
 709 And per queue stats: q_ipackets, q_opackets, q_ibytes, q_obytes, q_errors.
 710
 711 These apply to all drivers.
 712
 713 * **[implements] eth_dev_ops**: ``stats_get``, ``stats_reset``.
 714 * **[related]    API**: ``rte_eth_stats_get``, ``rte_eth_stats_reset()``.
 715
 716
 717 .. _nic_features_extended_stats:
 718
 719 Extended stats
 720 --------------
 721
 722 Supports Extended Statistics, changes from driver to driver.
 723
 724 * **[implements] eth_dev_ops**: ``xstats_get``, ``xstats_reset``, ``xstats_get_names``.
 725 * **[implements] eth_dev_ops**: ``xstats_get_by_id``, ``xstats_get_names_by_id``.
 726 * **[related]    API**: ``rte_eth_xstats_get()``, ``rte_eth_xstats_reset()``,
 727   ``rte_eth_xstats_get_names``, ``rte_eth_xstats_get_by_id()``,
 728   ``rte_eth_xstats_get_names_by_id()``, ``rte_eth_xstats_get_id_by_name()``.
 729
 730
 731 .. _nic_features_stats_per_queue:
 732
 733 Stats per queue
 734 ---------------
 735
 736 Supports configuring per-queue stat counter mapping.
 737
 738 * **[implements] eth_dev_ops**: ``queue_stats_mapping_set``.
 739 * **[related]    API**: ``rte_eth_dev_set_rx_queue_stats_mapping()``,
 740   ``rte_eth_dev_set_tx_queue_stats_mapping()``.
 741
 742
 743 .. _nic_features_fw_version:
 744
 745 FW version
 746 ----------
 747
 748 Supports getting device hardware firmware information.
 749
 750 * **[implements] eth_dev_ops**: ``fw_version_get``.
 751 * **[related]    API**: ``rte_eth_dev_fw_version_get()``.
 752
 753
 754 .. _nic_features_eeprom_dump:
 755
 756 EEPROM dump
 757 -----------
 758
 759 Supports getting/setting device eeprom data.
 760
 761 * **[implements] eth_dev_ops**: ``get_eeprom_length``, ``get_eeprom``, ``set_eeprom``.
 762 * **[related]    API**: ``rte_eth_dev_get_eeprom_length()``, ``rte_eth_dev_get_eeprom()``,
 763   ``rte_eth_dev_set_eeprom()``.
 764
 765
 766 .. _nic_features_module_eeprom_dump:
 767
 768 Module EEPROM dump
 769 ------------------
 770
 771 Supports getting information and data of plugin module eeprom.
 772
 773 * **[implements] eth_dev_ops**: ``get_module_info``, ``get_module_eeprom``.
 774 * **[related]    API**: ``rte_eth_dev_get_module_info()``, ``rte_eth_dev_get_module_eeprom()``.
 775
 776
 777 .. _nic_features_register_dump:
 778
 779 Registers dump
 780 --------------
 781
 782 Supports retrieving device registers and registering attributes (number of
 783 registers and register size).
 784
 785 * **[implements] eth_dev_ops**: ``get_reg``.
 786 * **[related]    API**: ``rte_eth_dev_get_reg_info()``.
 787
 788
 789 .. _nic_features_led:
 790
 791 LED
 792 ---
 793
 794 Supports turning on/off a software controllable LED on a device.
 795
 796 * **[implements] eth_dev_ops**: ``dev_led_on``, ``dev_led_off``.
 797 * **[related]    API**: ``rte_eth_led_on()``, ``rte_eth_led_off()``.
 798
 799
 800 .. _nic_features_multiprocess_aware:
 801
 802 Multiprocess aware
 803 ------------------
 804
 805 Driver can be used for primary-secondary process model.
 806
 807
 808 .. _nic_features_bsd_nic_uio:
 809
 810 BSD nic_uio
 811 -----------
 812
 813 BSD ``nic_uio`` module supported.
 814
 815
 816 .. _nic_features_linux_uio:
 817
 818 Linux UIO
 819 ---------
 820
 821 Works with ``igb_uio`` kernel module.
 822
 823 * **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``igb_uio``.
 824
 825 .. _nic_features_linux_vfio:
 826
 827 Linux VFIO
 828 ----------
 829
 830 Works with ``vfio-pci`` kernel module.
 831
 832 * **[provides] RTE_PMD_REGISTER_KMOD_DEP**: ``vfio-pci``.
 833
 834 .. _nic_features_other_kdrv:
 835
 836 Other kdrv
 837 ----------
 838
 839 Kernel module other than above ones supported.
 840
 841
 842 .. _nic_features_armv7:
 843
 844 ARMv7
 845 -----
 846
 847 Support armv7 architecture.
 848
 849 Use ``defconfig_arm-armv7a-*-*``.
 850
 851
 852 .. _nic_features_armv8:
 853
 854 ARMv8
 855 -----
 856
 857 Support armv8a (64bit) architecture.
 858
 859 Use ``defconfig_arm64-armv8a-*-*``
 860
 861
 862 .. _nic_features_power8:
 863
 864 Power8
 865 ------
 866
 867 Support PowerPC architecture.
 868
 869 Use ``defconfig_ppc_64-power8-*-*``
 870
 871 .. _nic_features_x86-32:
 872
 873 x86-32
 874 ------
 875
 876 Support 32bits x86 architecture.
 877
 878 Use ``defconfig_x86_x32-native-*-*`` and ``defconfig_i686-native-*-*``.
 879
 880
 881 .. _nic_features_x86-64:
 882
 883 x86-64
 884 ------
 885
 886 Support 64bits x86 architecture.
 887
 888 Use ``defconfig_x86_64-native-*-*``.
 889
 890
 891 .. _nic_features_usage_doc:
 892
 893 Usage doc
 894 ---------
 895
 896 Documentation describes usage.
 897
 898 See ``doc/guides/nics/*.rst``
 899
 900
 901 .. _nic_features_design_doc:
 902
 903 Design doc
 904 ----------
 905
 906 Documentation describes design.
 907
 908 See ``doc/guides/nics/*.rst``.
 909
 910
 911 .. _nic_features_perf_doc:
 912
 913 Perf doc
 914 --------
 915
 916 Documentation describes performance values.
 917
 918 See ``dpdk.org/doc/perf/*``.
 919
 920 .. _nic_features_runtime_rx_queue_setup:
 921
 922 Runtime Rx queue setup
 923 ----------------------
 924
 925 Supports Rx queue setup after device started.
 926
 927 * **[provides] rte_eth_dev_info**: ``dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP``.
 928 * **[related]  API**: ``rte_eth_dev_info_get()``.
 929
 930 .. _nic_features_runtime_tx_queue_setup:
 931
 932 Runtime Tx queue setup
 933 ----------------------
 934
 935 Supports Tx queue setup after device started.
 936
 937 * **[provides] rte_eth_dev_info**: ``dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP``.
 938 * **[related]  API**: ``rte_eth_dev_info_get()``.
 939
 940 .. _nic_features_other:
 941
 942 Other dev ops not represented by a Feature
 943 ------------------------------------------
 944
 945 * ``rxq_info_get``
 946 * ``txq_info_get``
 947 * ``vlan_tpid_set``
 948 * ``vlan_strip_queue_set``
 949 * ``vlan_pvid_set``
 950 * ``rx_queue_count``
 951 * ``l2_tunnel_offload_set``
 952 * ``uc_hash_table_set``
 953 * ``uc_all_hash_table_set``
 954 * ``udp_tunnel_port_add``
 955 * ``udp_tunnel_port_del``
 956 * ``l2_tunnel_eth_type_conf``
 957 * ``l2_tunnel_offload_set``
 958 * ``tx_pkt_prepare``