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_buffer_split:
 189
 190 Buffer Split on Rx
 191 ------------------
 192
 193 Scatters the packets being received on specified boundaries to segmented mbufs.
 194
 195 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT``.
 196 * **[uses]       rte_eth_rxconf**: ``rx_conf.rx_seg, rx_conf.rx_nseg``.
 197 * **[implements] datapath**: ``Buffer Split functionality``.
 198 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa:RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT``.
 199 * **[related] API**: ``rte_eth_rx_queue_setup()``.
 200
 201
 202 .. _nic_features_lro:
 203
 204 LRO
 205 ---
 206
 207 Supports Large Receive Offload.
 208
 209 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TCP_LRO``.
 210   ``dev_conf.rxmode.max_lro_pkt_size``.
 211 * **[implements] datapath**: ``LRO functionality``.
 212 * **[implements] rte_eth_dev_data**: ``lro``.
 213 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_LRO``, ``mbuf.tso_segsz``.
 214 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_TCP_LRO``.
 215 * **[provides]   rte_eth_dev_info**: ``max_lro_pkt_size``.
 216
 217
 218 .. _nic_features_tso:
 219
 220 TSO
 221 ---
 222
 223 Supports TCP Segmentation Offloading.
 224
 225 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_TCP_TSO``.
 226 * **[uses]       rte_eth_desc_lim**: ``nb_seg_max``, ``nb_mtu_seg_max``.
 227 * **[uses]       mbuf**: ``mbuf.ol_flags:`` ``PKT_TX_TCP_SEG``, ``PKT_TX_IPV4``, ``PKT_TX_IPV6``, ``PKT_TX_IP_CKSUM``.
 228 * **[uses]       mbuf**: ``mbuf.tso_segsz``, ``mbuf.l2_len``, ``mbuf.l3_len``, ``mbuf.l4_len``.
 229 * **[implements] datapath**: ``TSO functionality``.
 230 * **[provides]   rte_eth_dev_info**: ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_TCP_TSO,DEV_TX_OFFLOAD_UDP_TSO``.
 231
 232
 233 .. _nic_features_promiscuous_mode:
 234
 235 Promiscuous mode
 236 ----------------
 237
 238 Supports enabling/disabling promiscuous mode for a port.
 239
 240 * **[implements] eth_dev_ops**: ``promiscuous_enable``, ``promiscuous_disable``.
 241 * **[implements] rte_eth_dev_data**: ``promiscuous``.
 242 * **[related]    API**: ``rte_eth_promiscuous_enable()``, ``rte_eth_promiscuous_disable()``,
 243   ``rte_eth_promiscuous_get()``.
 244
 245
 246 .. _nic_features_allmulticast_mode:
 247
 248 Allmulticast mode
 249 -----------------
 250
 251 Supports enabling/disabling receiving multicast frames.
 252
 253 * **[implements] eth_dev_ops**: ``allmulticast_enable``, ``allmulticast_disable``.
 254 * **[implements] rte_eth_dev_data**: ``all_multicast``.
 255 * **[related]    API**: ``rte_eth_allmulticast_enable()``,
 256   ``rte_eth_allmulticast_disable()``, ``rte_eth_allmulticast_get()``.
 257
 258
 259 .. _nic_features_unicast_mac_filter:
 260
 261 Unicast MAC filter
 262 ------------------
 263
 264 Supports adding MAC addresses to enable incoming filtering of packets.
 265
 266 * **[implements] eth_dev_ops**: ``mac_addr_set``, ``mac_addr_add``, ``mac_addr_remove``.
 267 * **[implements] rte_eth_dev_data**: ``mac_addrs``.
 268 * **[related]    API**: ``rte_eth_dev_default_mac_addr_set()``,
 269   ``rte_eth_dev_mac_addr_add()``, ``rte_eth_dev_mac_addr_remove()``,
 270   ``rte_eth_macaddr_get()``.
 271
 272
 273 .. _nic_features_multicast_mac_filter:
 274
 275 Multicast MAC filter
 276 --------------------
 277
 278 Supports setting multicast addresses to filter.
 279
 280 * **[implements] eth_dev_ops**: ``set_mc_addr_list``.
 281 * **[related]    API**: ``rte_eth_dev_set_mc_addr_list()``.
 282
 283
 284 .. _nic_features_rss_hash:
 285
 286 RSS hash
 287 --------
 288
 289 Supports RSS hashing on RX.
 290
 291 * **[uses]     user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_RSS_FLAG``.
 292 * **[uses]     user config**: ``dev_conf.rx_adv_conf.rss_conf``.
 293 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_RSS_HASH``.
 294 * **[provides] rte_eth_dev_info**: ``flow_type_rss_offloads``.
 295 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 296
 297
 298 .. _nic_features_inner_rss:
 299
 300 Inner RSS
 301 ---------
 302
 303 Supports RX RSS hashing on Inner headers.
 304
 305 * **[uses]    rte_flow_action_rss**: ``level``.
 306 * **[uses]    rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_RSS_HASH``.
 307 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 308
 309
 310 .. _nic_features_rss_key_update:
 311
 312 RSS key update
 313 --------------
 314
 315 Supports configuration of Receive Side Scaling (RSS) hash computation. Updating
 316 Receive Side Scaling (RSS) hash key.
 317
 318 * **[implements] eth_dev_ops**: ``rss_hash_update``, ``rss_hash_conf_get``.
 319 * **[provides]   rte_eth_dev_info**: ``hash_key_size``.
 320 * **[related]    API**: ``rte_eth_dev_rss_hash_update()``,
 321   ``rte_eth_dev_rss_hash_conf_get()``.
 322
 323
 324 .. _nic_features_rss_reta_update:
 325
 326 RSS reta update
 327 ---------------
 328
 329 Supports updating Redirection Table of the Receive Side Scaling (RSS).
 330
 331 * **[implements] eth_dev_ops**: ``reta_update``, ``reta_query``.
 332 * **[provides]   rte_eth_dev_info**: ``reta_size``.
 333 * **[related]    API**: ``rte_eth_dev_rss_reta_update()``, ``rte_eth_dev_rss_reta_query()``.
 334
 335
 336 .. _nic_features_vmdq:
 337
 338 VMDq
 339 ----
 340
 341 Supports Virtual Machine Device Queues (VMDq).
 342
 343 * **[uses] user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_VMDQ_FLAG``.
 344 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 345 * **[uses] user config**: ``dev_conf.rx_adv_conf.vmdq_rx_conf``.
 346 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 347 * **[uses] user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 348
 349
 350 .. _nic_features_sriov:
 351
 352 SR-IOV
 353 ------
 354
 355 Driver supports creating Virtual Functions.
 356
 357 * **[implements] rte_eth_dev_data**: ``sriov``.
 358
 359 .. _nic_features_dcb:
 360
 361 DCB
 362 ---
 363
 364 Supports Data Center Bridging (DCB).
 365
 366 * **[uses]       user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_DCB_FLAG``.
 367 * **[uses]       user config**: ``dev_conf.rx_adv_conf.vmdq_dcb_conf``.
 368 * **[uses]       user config**: ``dev_conf.rx_adv_conf.dcb_rx_conf``.
 369 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_dcb_tx_conf``.
 370 * **[uses]       user config**: ``dev_conf.tx_adv_conf.vmdq_tx_conf``.
 371 * **[implements] eth_dev_ops**: ``get_dcb_info``.
 372 * **[related]    API**: ``rte_eth_dev_get_dcb_info()``.
 373
 374
 375 .. _nic_features_vlan_filter:
 376
 377 VLAN filter
 378 -----------
 379
 380 Supports filtering of a VLAN Tag identifier.
 381
 382 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_FILTER``.
 383 * **[implements] eth_dev_ops**: ``vlan_filter_set``.
 384 * **[related]    API**: ``rte_eth_dev_vlan_filter()``.
 385
 386
 387 .. _nic_features_flow_control:
 388
 389 Flow control
 390 ------------
 391
 392 Supports configuring link flow control.
 393
 394 * **[implements] eth_dev_ops**: ``flow_ctrl_get``, ``flow_ctrl_set``,
 395   ``priority_flow_ctrl_set``.
 396 * **[related]    API**: ``rte_eth_dev_flow_ctrl_get()``, ``rte_eth_dev_flow_ctrl_set()``,
 397   ``rte_eth_dev_priority_flow_ctrl_set()``.
 398
 399
 400 .. _nic_features_flow_api:
 401
 402 Flow API
 403 --------
 404
 405 Supports flow API family.
 406
 407 * **[implements] eth_dev_ops**: ``flow_ops_get``.
 408 * **[implements] rte_flow_ops**: ``All``.
 409
 410
 411 .. _nic_features_rate_limitation:
 412
 413 Rate limitation
 414 ---------------
 415
 416 Supports Tx rate limitation for a queue.
 417
 418 * **[implements] eth_dev_ops**: ``set_queue_rate_limit``.
 419 * **[related]    API**: ``rte_eth_set_queue_rate_limit()``.
 420
 421
 422 .. _nic_features_traffic_mirroring:
 423
 424 Traffic mirroring
 425 -----------------
 426
 427 Supports adding traffic mirroring rules.
 428
 429 * **[implements] eth_dev_ops**: ``mirror_rule_set``, ``mirror_rule_reset``.
 430 * **[related]    API**: ``rte_eth_mirror_rule_set()``, ``rte_eth_mirror_rule_reset()``.
 431
 432
 433 .. _nic_features_inline_crypto_doc:
 434
 435 Inline crypto
 436 -------------
 437
 438 Supports inline crypto processing defined by rte_security library to perform crypto
 439 operations of security protocol while packet is received in NIC. NIC is not aware
 440 of protocol operations. See Security library and PMD documentation for more details.
 441
 442 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_SECURITY``,
 443 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_SECURITY``.
 444 * **[implements] rte_security_ops**: ``session_create``, ``session_update``,
 445   ``session_stats_get``, ``session_destroy``, ``set_pkt_metadata``, ``capabilities_get``.
 446 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_SECURITY``,
 447   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_SECURITY``.
 448 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD``,
 449   ``mbuf.ol_flags:PKT_TX_SEC_OFFLOAD``, ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD_FAILED``.
 450 * **[provides]   rte_security_ops, capabilities_get**:  ``action: RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO``
 451
 452
 453 .. _nic_features_inline_protocol_doc:
 454
 455 Inline protocol
 456 ---------------
 457
 458 Supports inline protocol processing defined by rte_security library to perform
 459 protocol processing for the security protocol (e.g. IPsec, MACSEC) while the
 460 packet is received at NIC. The NIC is capable of understanding the security
 461 protocol operations. See security library and PMD documentation for more details.
 462
 463 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_SECURITY``,
 464 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_SECURITY``.
 465 * **[implements] rte_security_ops**: ``session_create``, ``session_update``,
 466   ``session_stats_get``, ``session_destroy``, ``set_pkt_metadata``, ``get_userdata``,
 467   ``capabilities_get``.
 468 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_SECURITY``,
 469   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_SECURITY``.
 470 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD``,
 471   ``mbuf.ol_flags:PKT_TX_SEC_OFFLOAD``, ``mbuf.ol_flags:PKT_RX_SEC_OFFLOAD_FAILED``.
 472 * **[provides]   rte_security_ops, capabilities_get**:  ``action: RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL``
 473
 474
 475 .. _nic_features_crc_offload:
 476
 477 CRC offload
 478 -----------
 479
 480 Supports CRC stripping by hardware.
 481 A PMD assumed to support CRC stripping by default. PMD should advertise if it supports keeping CRC.
 482
 483 * **[uses] rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_KEEP_CRC``.
 484
 485
 486 .. _nic_features_vlan_offload:
 487
 488 VLAN offload
 489 ------------
 490
 491 Supports VLAN offload to hardware.
 492
 493 * **[uses]       rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_VLAN_STRIP,DEV_RX_OFFLOAD_VLAN_FILTER,DEV_RX_OFFLOAD_VLAN_EXTEND``.
 494 * **[uses]       rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_VLAN_INSERT``.
 495 * **[uses]       mbuf**: ``mbuf.ol_flags:PKT_TX_VLAN``, ``mbuf.vlan_tci``.
 496 * **[implements] eth_dev_ops**: ``vlan_offload_set``.
 497 * **[provides]   mbuf**: ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.ol_flags:PKT_RX_VLAN`` ``mbuf.vlan_tci``.
 498 * **[provides]   rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_VLAN_STRIP``,
 499   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_VLAN_INSERT``.
 500 * **[related]    API**: ``rte_eth_dev_set_vlan_offload()``,
 501   ``rte_eth_dev_get_vlan_offload()``.
 502
 503
 504 .. _nic_features_qinq_offload:
 505
 506 QinQ offload
 507 ------------
 508
 509 Supports QinQ (queue in queue) offload.
 510
 511 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_QINQ_STRIP``.
 512 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_QINQ_INSERT``.
 513 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_QINQ``, ``mbuf.vlan_tci_outer``.
 514 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_QINQ_STRIPPED``, ``mbuf.ol_flags:PKT_RX_QINQ``,
 515   ``mbuf.ol_flags:PKT_RX_VLAN_STRIPPED``, ``mbuf.ol_flags:PKT_RX_VLAN``
 516   ``mbuf.vlan_tci``, ``mbuf.vlan_tci_outer``.
 517 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_QINQ_STRIP``,
 518   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_QINQ_INSERT``.
 519
 520
 521 .. _nic_features_fec:
 522
 523 FEC
 524 ---
 525
 526 Supports Forward error correction. Forward error correction (FEC) is a bit error correction mode.
 527 It adds error correction information to data packets at the transmit end, and uses the error correction
 528 information to correct the bit errors generated during data packet transmission at the receive end. This
 529 improves signal quality but also brings a delay to signals. This function can be enabled or disabled as required.
 530
 531 * **[implements] eth_dev_ops**: ``fec_get_capability``, ``fec_get``, ``fec_set``.
 532 * **[provides]   rte_eth_fec_capa**: ``speed:ETH_SPEED_NUM_*``, ``capa:RTE_ETH_FEC_MODE_TO_CAPA()``.
 533 * **[related]    API**: ``rte_eth_fec_get_capability()``, ``rte_eth_fec_get()``, ``rte_eth_fec_set()``.
 534
 535
 536 .. _nic_features_l3_checksum_offload:
 537
 538 L3 checksum offload
 539 -------------------
 540
 541 Supports L3 checksum offload.
 542
 543 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_IPV4_CKSUM``.
 544 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 545 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 546   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``.
 547 * **[uses]     mbuf**: ``mbuf.l2_len``, ``mbuf.l3_len``.
 548 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_IP_CKSUM_UNKNOWN`` |
 549   ``PKT_RX_IP_CKSUM_BAD`` | ``PKT_RX_IP_CKSUM_GOOD`` |
 550   ``PKT_RX_IP_CKSUM_NONE``.
 551 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_IPV4_CKSUM``,
 552   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_IPV4_CKSUM``.
 553
 554
 555 .. _nic_features_l4_checksum_offload:
 556
 557 L4 checksum offload
 558 -------------------
 559
 560 Supports L4 checksum offload.
 561
 562 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_UDP_CKSUM,DEV_RX_OFFLOAD_TCP_CKSUM,DEV_RX_OFFLOAD_SCTP_CKSUM``.
 563 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 564 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 565   ``mbuf.ol_flags:PKT_TX_L4_NO_CKSUM`` | ``PKT_TX_TCP_CKSUM`` |
 566   ``PKT_TX_SCTP_CKSUM`` | ``PKT_TX_UDP_CKSUM``.
 567 * **[uses]     mbuf**: ``mbuf.l2_len``, ``mbuf.l3_len``.
 568 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_L4_CKSUM_UNKNOWN`` |
 569   ``PKT_RX_L4_CKSUM_BAD`` | ``PKT_RX_L4_CKSUM_GOOD`` |
 570   ``PKT_RX_L4_CKSUM_NONE``.
 571 * **[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``,
 572   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_UDP_CKSUM,DEV_TX_OFFLOAD_TCP_CKSUM,DEV_TX_OFFLOAD_SCTP_CKSUM``.
 573
 574 .. _nic_features_hw_timestamp:
 575
 576 Timestamp offload
 577 -----------------
 578
 579 Supports Timestamp.
 580
 581 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_TIMESTAMP``.
 582 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_TIMESTAMP``.
 583 * **[provides] mbuf**: ``mbuf.timestamp``.
 584 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa: DEV_RX_OFFLOAD_TIMESTAMP``.
 585 * **[related] eth_dev_ops**: ``read_clock``.
 586
 587 .. _nic_features_macsec_offload:
 588
 589 MACsec offload
 590 --------------
 591
 592 Supports MACsec.
 593
 594 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_MACSEC_STRIP``.
 595 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 596 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_MACSEC``.
 597 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_MACSEC_STRIP``,
 598   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_MACSEC_INSERT``.
 599
 600
 601 .. _nic_features_inner_l3_checksum:
 602
 603 Inner L3 checksum
 604 -----------------
 605
 606 Supports inner packet L3 checksum.
 607
 608 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``.
 609 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 610 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_IP_CKSUM``,
 611   ``mbuf.ol_flags:PKT_TX_IPV4`` | ``PKT_TX_IPV6``,
 612   ``mbuf.ol_flags:PKT_TX_OUTER_IP_CKSUM``,
 613   ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``.
 614 * **[uses]     mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
 615 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_OUTER_IP_CKSUM_BAD``.
 616 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM``,
 617   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM``.
 618
 619
 620 .. _nic_features_inner_l4_checksum:
 621
 622 Inner L4 checksum
 623 -----------------
 624
 625 Supports inner packet L4 checksum.
 626
 627 * **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM``.
 628 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_OUTER_L4_CKSUM_UNKNOWN`` |
 629   ``PKT_RX_OUTER_L4_CKSUM_BAD`` | ``PKT_RX_OUTER_L4_CKSUM_GOOD`` | ``PKT_RX_OUTER_L4_CKSUM_INVALID``.
 630 * **[uses]     rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM``.
 631 * **[uses]     mbuf**: ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``.
 632   ``mbuf.ol_flags:PKT_TX_OUTER_UDP_CKSUM``.
 633 * **[uses]     mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
 634 * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM``,
 635   ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM``.
 636
 637
 638 .. _nic_features_packet_type_parsing:
 639
 640 Packet type parsing
 641 -------------------
 642
 643 Supports packet type parsing and returns a list of supported types.
 644 Allows application to set ptypes it is interested in.
 645
 646 * **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``,
 647 * **[related]    API**: ``rte_eth_dev_get_supported_ptypes()``,
 648   ``rte_eth_dev_set_ptypes()``, ``dev_ptypes_set``.
 649 * **[provides]   mbuf**: ``mbuf.packet_type``.
 650
 651
 652 .. _nic_features_timesync:
 653
 654 Timesync
 655 --------
 656
 657 Supports IEEE1588/802.1AS timestamping.
 658
 659 * **[implements] eth_dev_ops**: ``timesync_enable``, ``timesync_disable``
 660   ``timesync_read_rx_timestamp``, ``timesync_read_tx_timestamp``,
 661   ``timesync_adjust_time``, ``timesync_read_time``, ``timesync_write_time``.
 662 * **[related]    API**: ``rte_eth_timesync_enable()``, ``rte_eth_timesync_disable()``,
 663   ``rte_eth_timesync_read_rx_timestamp()``,
 664   ``rte_eth_timesync_read_tx_timestamp``, ``rte_eth_timesync_adjust_time()``,
 665   ``rte_eth_timesync_read_time()``, ``rte_eth_timesync_write_time()``.
 666
 667
 668 .. _nic_features_rx_descriptor_status:
 669
 670 Rx descriptor status
 671 --------------------
 672
 673 Supports check the status of a Rx descriptor. When ``rx_descriptor_status`` is
 674 used, status can be "Available", "Done" or "Unavailable". When
 675 ``rx_descriptor_done`` is used, status can be "DD bit is set" or "DD bit is
 676 not set".
 677
 678 * **[implements] rte_eth_dev**: ``rx_descriptor_status``.
 679 * **[related]    API**: ``rte_eth_rx_descriptor_status()``.
 680 * **[implements] rte_eth_dev**: ``rx_descriptor_done``.
 681 * **[related]    API**: ``rte_eth_rx_descriptor_done()``.
 682
 683
 684 .. _nic_features_tx_descriptor_status:
 685
 686 Tx descriptor status
 687 --------------------
 688
 689 Supports checking the status of a Tx descriptor. Status can be "Full", "Done"
 690 or "Unavailable."
 691
 692 * **[implements] rte_eth_dev**: ``tx_descriptor_status``.
 693 * **[related]    API**: ``rte_eth_tx_descriptor_status()``.
 694
 695
 696 .. _nic_features_basic_stats:
 697
 698 Basic stats
 699 -----------
 700
 701 Support basic statistics such as: ipackets, opackets, ibytes, obytes,
 702 imissed, ierrors, oerrors, rx_nombuf.
 703
 704 And per queue stats: q_ipackets, q_opackets, q_ibytes, q_obytes, q_errors.
 705
 706 These apply to all drivers.
 707
 708 * **[implements] eth_dev_ops**: ``stats_get``, ``stats_reset``.
 709 * **[related]    API**: ``rte_eth_stats_get``, ``rte_eth_stats_reset()``.
 710
 711
 712 .. _nic_features_extended_stats:
 713
 714 Extended stats
 715 --------------
 716
 717 Supports Extended Statistics, changes from driver to driver.
 718
 719 * **[implements] eth_dev_ops**: ``xstats_get``, ``xstats_reset``, ``xstats_get_names``.
 720 * **[implements] eth_dev_ops**: ``xstats_get_by_id``, ``xstats_get_names_by_id``.
 721 * **[related]    API**: ``rte_eth_xstats_get()``, ``rte_eth_xstats_reset()``,
 722   ``rte_eth_xstats_get_names``, ``rte_eth_xstats_get_by_id()``,
 723   ``rte_eth_xstats_get_names_by_id()``, ``rte_eth_xstats_get_id_by_name()``.
 724
 725
 726 .. _nic_features_stats_per_queue:
 727
 728 Stats per queue
 729 ---------------
 730
 731 Supports configuring per-queue stat counter mapping.
 732
 733 * **[implements] eth_dev_ops**: ``queue_stats_mapping_set``.
 734 * **[related]    API**: ``rte_eth_dev_set_rx_queue_stats_mapping()``,
 735   ``rte_eth_dev_set_tx_queue_stats_mapping()``.
 736
 737
 738 .. _nic_features_fw_version:
 739
 740 FW version
 741 ----------
 742
 743 Supports getting device hardware firmware information.
 744
 745 * **[implements] eth_dev_ops**: ``fw_version_get``.
 746 * **[related]    API**: ``rte_eth_dev_fw_version_get()``.
 747
 748
 749 .. _nic_features_eeprom_dump:
 750
 751 EEPROM dump
 752 -----------
 753
 754 Supports getting/setting device eeprom data.
 755
 756 * **[implements] eth_dev_ops**: ``get_eeprom_length``, ``get_eeprom``, ``set_eeprom``.
 757 * **[related]    API**: ``rte_eth_dev_get_eeprom_length()``, ``rte_eth_dev_get_eeprom()``,
 758   ``rte_eth_dev_set_eeprom()``.
 759
 760
 761 .. _nic_features_module_eeprom_dump:
 762
 763 Module EEPROM dump
 764 ------------------
 765
 766 Supports getting information and data of plugin module eeprom.
 767
 768 * **[implements] eth_dev_ops**: ``get_module_info``, ``get_module_eeprom``.
 769 * **[related]    API**: ``rte_eth_dev_get_module_info()``, ``rte_eth_dev_get_module_eeprom()``.
 770
 771
 772 .. _nic_features_register_dump:
 773
 774 Registers dump
 775 --------------
 776
 777 Supports retrieving device registers and registering attributes (number of
 778 registers and register size).
 779
 780 * **[implements] eth_dev_ops**: ``get_reg``.
 781 * **[related]    API**: ``rte_eth_dev_get_reg_info()``.
 782
 783
 784 .. _nic_features_led:
 785
 786 LED
 787 ---
 788
 789 Supports turning on/off a software controllable LED on a device.
 790
 791 * **[implements] eth_dev_ops**: ``dev_led_on``, ``dev_led_off``.
 792 * **[related]    API**: ``rte_eth_led_on()``, ``rte_eth_led_off()``.
 793
 794
 795 .. _nic_features_multiprocess_aware:
 796
 797 Multiprocess aware
 798 ------------------
 799
 800 Driver can be used for primary-secondary process model.
 801
 802
 803 .. _nic_features_freebsd:
 804
 805 FreeBSD
 806 -------
 807
 808 Supports running on FreeBSD.
 809
 810
 811 .. _nic_features_linux:
 812
 813 Linux
 814 -----
 815
 816 Supports running on Linux.
 817
 818
 819 .. _nic_features_windows:
 820
 821 Windows
 822 -------
 823
 824 Supports running on Windows.
 825
 826
 827 .. _nic_features_armv7:
 828
 829 ARMv7
 830 -----
 831
 832 Support armv7 architecture.
 833
 834
 835 .. _nic_features_armv8:
 836
 837 ARMv8
 838 -----
 839
 840 Support armv8a (64bit) architecture.
 841
 842
 843 .. _nic_features_power8:
 844
 845 Power8
 846 ------
 847
 848 Support PowerPC architecture.
 849
 850
 851 .. _nic_features_x86-32:
 852
 853 x86-32
 854 ------
 855
 856 Support 32bits x86 architecture.
 857
 858
 859 .. _nic_features_x86-64:
 860
 861 x86-64
 862 ------
 863
 864 Support 64bits x86 architecture.
 865
 866
 867 .. _nic_features_usage_doc:
 868
 869 Usage doc
 870 ---------
 871
 872 Documentation describes usage.
 873
 874 See ``doc/guides/nics/*.rst``
 875
 876
 877 .. _nic_features_design_doc:
 878
 879 Design doc
 880 ----------
 881
 882 Documentation describes design.
 883
 884 See ``doc/guides/nics/*.rst``.
 885
 886
 887 .. _nic_features_perf_doc:
 888
 889 Perf doc
 890 --------
 891
 892 Documentation describes performance values.
 893
 894 See ``dpdk.org/doc/perf/*``.
 895
 896 .. _nic_features_runtime_rx_queue_setup:
 897
 898 Runtime Rx queue setup
 899 ----------------------
 900
 901 Supports Rx queue setup after device started.
 902
 903 * **[provides] rte_eth_dev_info**: ``dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP``.
 904 * **[related]  API**: ``rte_eth_dev_info_get()``.
 905
 906 .. _nic_features_runtime_tx_queue_setup:
 907
 908 Runtime Tx queue setup
 909 ----------------------
 910
 911 Supports Tx queue setup after device started.
 912
 913 * **[provides] rte_eth_dev_info**: ``dev_capa:RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP``.
 914 * **[related]  API**: ``rte_eth_dev_info_get()``.
 915
 916 .. _nic_features_burst_mode_info:
 917
 918 Burst mode info
 919 ---------------
 920
 921 Supports to get Rx/Tx packet burst mode information.
 922
 923 * **[implements] eth_dev_ops**: ``rx_burst_mode_get``, ``tx_burst_mode_get``.
 924 * **[related] API**: ``rte_eth_rx_burst_mode_get()``, ``rte_eth_tx_burst_mode_get()``.
 925
 926 .. _nic_features_other:
 927
 928 Other dev ops not represented by a Feature
 929 ------------------------------------------
 930
 931 * ``rxq_info_get``
 932 * ``txq_info_get``
 933 * ``vlan_tpid_set``
 934 * ``vlan_strip_queue_set``
 935 * ``vlan_pvid_set``
 936 * ``rx_queue_count``
 937 * ``uc_hash_table_set``
 938 * ``uc_all_hash_table_set``
 939 * ``udp_tunnel_port_add``
 940 * ``udp_tunnel_port_del``
 941 * ``tx_pkt_prepare``