1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2017 Intel Corporation
11 * RTE Ethernet Device API
13 * The Ethernet Device API is composed of two parts:
15 * - The application-oriented Ethernet API that includes functions to setup
16 * an Ethernet device (configure it, setup its RX and TX queues and start it),
17 * to get its MAC address, the speed and the status of its physical link,
18 * to receive and to transmit packets, and so on.
20 * - The driver-oriented Ethernet API that exports functions allowing
21 * an Ethernet Poll Mode Driver (PMD) to allocate an Ethernet device instance,
22 * create memzone for HW rings and process registered callbacks, and so on.
23 * PMDs should include rte_ethdev_driver.h instead of this header.
25 * By default, all the functions of the Ethernet Device API exported by a PMD
26 * are lock-free functions which assume to not be invoked in parallel on
27 * different logical cores to work on the same target object. For instance,
28 * the receive function of a PMD cannot be invoked in parallel on two logical
29 * cores to poll the same RX queue [of the same port]. Of course, this function
30 * can be invoked in parallel by different logical cores on different RX queues.
31 * It is the responsibility of the upper level application to enforce this rule.
33 * If needed, parallel accesses by multiple logical cores to shared queues
34 * shall be explicitly protected by dedicated inline lock-aware functions
35 * built on top of their corresponding lock-free functions of the PMD API.
37 * In all functions of the Ethernet API, the Ethernet device is
38 * designated by an integer >= 0 named the device port identifier.
40 * At the Ethernet driver level, Ethernet devices are represented by a generic
41 * data structure of type *rte_eth_dev*.
43 * Ethernet devices are dynamically registered during the PCI probing phase
44 * performed at EAL initialization time.
45 * When an Ethernet device is being probed, an *rte_eth_dev* structure and
46 * a new port identifier are allocated for that device. Then, the eth_dev_init()
47 * function supplied by the Ethernet driver matching the probed PCI
48 * device is invoked to properly initialize the device.
50 * The role of the device init function consists of resetting the hardware,
51 * checking access to Non-volatile Memory (NVM), reading the MAC address
54 * If the device init operation is successful, the correspondence between
55 * the port identifier assigned to the new device and its associated
56 * *rte_eth_dev* structure is effectively registered.
57 * Otherwise, both the *rte_eth_dev* structure and the port identifier are
60 * The functions exported by the application Ethernet API to setup a device
61 * designated by its port identifier must be invoked in the following order:
62 * - rte_eth_dev_configure()
63 * - rte_eth_tx_queue_setup()
64 * - rte_eth_rx_queue_setup()
65 * - rte_eth_dev_start()
67 * Then, the network application can invoke, in any order, the functions
68 * exported by the Ethernet API to get the MAC address of a given device, to
69 * get the speed and the status of a device physical link, to receive/transmit
70 * [burst of] packets, and so on.
72 * If the application wants to change the configuration (i.e. call
73 * rte_eth_dev_configure(), rte_eth_tx_queue_setup(), or
74 * rte_eth_rx_queue_setup()), it must call rte_eth_dev_stop() first to stop the
75 * device and then do the reconfiguration before calling rte_eth_dev_start()
76 * again. The transmit and receive functions should not be invoked when the
79 * Please note that some configuration is not stored between calls to
80 * rte_eth_dev_stop()/rte_eth_dev_start(). The following configuration will
84 * - flow control settings
85 * - receive mode configuration (promiscuous mode, all-multicast mode,
86 * hardware checksum mode, RSS/VMDQ settings etc.)
87 * - VLAN filtering configuration
88 * - default MAC address
89 * - MAC addresses supplied to MAC address array
90 * - flow director filtering mode (but not filtering rules)
91 * - NIC queue statistics mappings
93 * Any other configuration will not be stored and will need to be re-entered
94 * before a call to rte_eth_dev_start().
96 * Finally, a network application can close an Ethernet device by invoking the
97 * rte_eth_dev_close() function.
99 * Each function of the application Ethernet API invokes a specific function
100 * of the PMD that controls the target device designated by its port
102 * For this purpose, all device-specific functions of an Ethernet driver are
103 * supplied through a set of pointers contained in a generic structure of type
105 * The address of the *eth_dev_ops* structure is stored in the *rte_eth_dev*
106 * structure by the device init function of the Ethernet driver, which is
107 * invoked during the PCI probing phase, as explained earlier.
109 * In other words, each function of the Ethernet API simply retrieves the
110 * *rte_eth_dev* structure associated with the device port identifier and
111 * performs an indirect invocation of the corresponding driver function
112 * supplied in the *eth_dev_ops* structure of the *rte_eth_dev* structure.
114 * For performance reasons, the address of the burst-oriented RX and TX
115 * functions of the Ethernet driver are not contained in the *eth_dev_ops*
116 * structure. Instead, they are directly stored at the beginning of the
117 * *rte_eth_dev* structure to avoid an extra indirect memory access during
120 * RTE ethernet device drivers do not use interrupts for transmitting or
121 * receiving. Instead, Ethernet drivers export Poll-Mode receive and transmit
122 * functions to applications.
123 * Both receive and transmit functions are packet-burst oriented to minimize
124 * their cost per packet through the following optimizations:
126 * - Sharing among multiple packets the incompressible cost of the
127 * invocation of receive/transmit functions.
129 * - Enabling receive/transmit functions to take advantage of burst-oriented
130 * hardware features (L1 cache, prefetch instructions, NIC head/tail
131 * registers) to minimize the number of CPU cycles per packet, for instance,
132 * by avoiding useless read memory accesses to ring descriptors, or by
133 * systematically using arrays of pointers that exactly fit L1 cache line
134 * boundaries and sizes.
136 * The burst-oriented receive function does not provide any error notification,
137 * to avoid the corresponding overhead. As a hint, the upper-level application
138 * might check the status of the device link once being systematically returned
139 * a 0 value by the receive function of the driver for a given number of tries.
148 /* Use this macro to check if LRO API is supported */
149 #define RTE_ETHDEV_HAS_LRO_SUPPORT
151 #include <rte_compat.h>
153 #include <rte_interrupts.h>
155 #include <rte_devargs.h>
156 #include <rte_errno.h>
157 #include <rte_common.h>
158 #include <rte_config.h>
160 #include "rte_ether.h"
161 #include "rte_dev_info.h"
163 extern int rte_eth_dev_logtype;
165 #define RTE_ETHDEV_LOG(level, ...) \
166 rte_log(RTE_LOG_ ## level, rte_eth_dev_logtype, "" __VA_ARGS__)
171 * Initializes a device iterator.
173 * This iterator allows accessing a list of devices matching some devargs.
176 * Device iterator handle initialized by the function.
177 * The fields bus_str and cls_str might be dynamically allocated,
178 * and could be freed by calling rte_eth_iterator_cleanup().
181 * Device description string.
184 * 0 on successful initialization, negative otherwise.
186 int rte_eth_iterator_init(struct rte_dev_iterator *iter, const char *devargs);
189 * Iterates on devices with devargs filter.
190 * The ownership is not checked.
192 * The next port id is returned, and the iterator is updated.
195 * Device iterator handle initialized by rte_eth_iterator_init().
196 * Some fields bus_str and cls_str might be freed when no more port is found,
197 * by calling rte_eth_iterator_cleanup().
200 * A port id if found, RTE_MAX_ETHPORTS otherwise.
202 uint16_t rte_eth_iterator_next(struct rte_dev_iterator *iter);
205 * Free some allocated fields of the iterator.
207 * This function is automatically called by rte_eth_iterator_next()
208 * on the last iteration (i.e. when no more matching port is found).
210 * It is safe to call this function twice; it will do nothing more.
213 * Device iterator handle initialized by rte_eth_iterator_init().
214 * The fields bus_str and cls_str are freed if needed.
216 void rte_eth_iterator_cleanup(struct rte_dev_iterator *iter);
219 * Macro to iterate over all ethdev ports matching some devargs.
221 * If a break is done before the end of the loop,
222 * the function rte_eth_iterator_cleanup() must be called.
225 * Iterated port id of type uint16_t.
227 * Device parameters input as string of type char*.
229 * Iterator handle of type struct rte_dev_iterator, used internally.
231 #define RTE_ETH_FOREACH_MATCHING_DEV(id, devargs, iter) \
232 for (rte_eth_iterator_init(iter, devargs), \
233 id = rte_eth_iterator_next(iter); \
234 id != RTE_MAX_ETHPORTS; \
235 id = rte_eth_iterator_next(iter))
238 * A structure used to retrieve statistics for an Ethernet port.
239 * Not all statistics fields in struct rte_eth_stats are supported
240 * by any type of network interface card (NIC). If any statistics
241 * field is not supported, its value is 0.
243 struct rte_eth_stats {
244 uint64_t ipackets; /**< Total number of successfully received packets. */
245 uint64_t opackets; /**< Total number of successfully transmitted packets.*/
246 uint64_t ibytes; /**< Total number of successfully received bytes. */
247 uint64_t obytes; /**< Total number of successfully transmitted bytes. */
249 /**< Total of RX packets dropped by the HW,
250 * because there are no available buffer (i.e. RX queues are full).
252 uint64_t ierrors; /**< Total number of erroneous received packets. */
253 uint64_t oerrors; /**< Total number of failed transmitted packets. */
254 uint64_t rx_nombuf; /**< Total number of RX mbuf allocation failures. */
255 uint64_t q_ipackets[RTE_ETHDEV_QUEUE_STAT_CNTRS];
256 /**< Total number of queue RX packets. */
257 uint64_t q_opackets[RTE_ETHDEV_QUEUE_STAT_CNTRS];
258 /**< Total number of queue TX packets. */
259 uint64_t q_ibytes[RTE_ETHDEV_QUEUE_STAT_CNTRS];
260 /**< Total number of successfully received queue bytes. */
261 uint64_t q_obytes[RTE_ETHDEV_QUEUE_STAT_CNTRS];
262 /**< Total number of successfully transmitted queue bytes. */
263 uint64_t q_errors[RTE_ETHDEV_QUEUE_STAT_CNTRS];
264 /**< Total number of queue packets received that are dropped. */
268 * Device supported speeds bitmap flags
270 #define ETH_LINK_SPEED_AUTONEG (0 << 0) /**< Autonegotiate (all speeds) */
271 #define ETH_LINK_SPEED_FIXED (1 << 0) /**< Disable autoneg (fixed speed) */
272 #define ETH_LINK_SPEED_10M_HD (1 << 1) /**< 10 Mbps half-duplex */
273 #define ETH_LINK_SPEED_10M (1 << 2) /**< 10 Mbps full-duplex */
274 #define ETH_LINK_SPEED_100M_HD (1 << 3) /**< 100 Mbps half-duplex */
275 #define ETH_LINK_SPEED_100M (1 << 4) /**< 100 Mbps full-duplex */
276 #define ETH_LINK_SPEED_1G (1 << 5) /**< 1 Gbps */
277 #define ETH_LINK_SPEED_2_5G (1 << 6) /**< 2.5 Gbps */
278 #define ETH_LINK_SPEED_5G (1 << 7) /**< 5 Gbps */
279 #define ETH_LINK_SPEED_10G (1 << 8) /**< 10 Gbps */
280 #define ETH_LINK_SPEED_20G (1 << 9) /**< 20 Gbps */
281 #define ETH_LINK_SPEED_25G (1 << 10) /**< 25 Gbps */
282 #define ETH_LINK_SPEED_40G (1 << 11) /**< 40 Gbps */
283 #define ETH_LINK_SPEED_50G (1 << 12) /**< 50 Gbps */
284 #define ETH_LINK_SPEED_56G (1 << 13) /**< 56 Gbps */
285 #define ETH_LINK_SPEED_100G (1 << 14) /**< 100 Gbps */
288 * Ethernet numeric link speeds in Mbps
290 #define ETH_SPEED_NUM_NONE 0 /**< Not defined */
291 #define ETH_SPEED_NUM_10M 10 /**< 10 Mbps */
292 #define ETH_SPEED_NUM_100M 100 /**< 100 Mbps */
293 #define ETH_SPEED_NUM_1G 1000 /**< 1 Gbps */
294 #define ETH_SPEED_NUM_2_5G 2500 /**< 2.5 Gbps */
295 #define ETH_SPEED_NUM_5G 5000 /**< 5 Gbps */
296 #define ETH_SPEED_NUM_10G 10000 /**< 10 Gbps */
297 #define ETH_SPEED_NUM_20G 20000 /**< 20 Gbps */
298 #define ETH_SPEED_NUM_25G 25000 /**< 25 Gbps */
299 #define ETH_SPEED_NUM_40G 40000 /**< 40 Gbps */
300 #define ETH_SPEED_NUM_50G 50000 /**< 50 Gbps */
301 #define ETH_SPEED_NUM_56G 56000 /**< 56 Gbps */
302 #define ETH_SPEED_NUM_100G 100000 /**< 100 Gbps */
305 * A structure used to retrieve link-level information of an Ethernet port.
308 struct rte_eth_link {
309 uint32_t link_speed; /**< ETH_SPEED_NUM_ */
310 uint16_t link_duplex : 1; /**< ETH_LINK_[HALF/FULL]_DUPLEX */
311 uint16_t link_autoneg : 1; /**< ETH_LINK_[AUTONEG/FIXED] */
312 uint16_t link_status : 1; /**< ETH_LINK_[DOWN/UP] */
313 } __attribute__((aligned(8))); /**< aligned for atomic64 read/write */
315 /* Utility constants */
316 #define ETH_LINK_HALF_DUPLEX 0 /**< Half-duplex connection (see link_duplex). */
317 #define ETH_LINK_FULL_DUPLEX 1 /**< Full-duplex connection (see link_duplex). */
318 #define ETH_LINK_DOWN 0 /**< Link is down (see link_status). */
319 #define ETH_LINK_UP 1 /**< Link is up (see link_status). */
320 #define ETH_LINK_FIXED 0 /**< No autonegotiation (see link_autoneg). */
321 #define ETH_LINK_AUTONEG 1 /**< Autonegotiated (see link_autoneg). */
324 * A structure used to configure the ring threshold registers of an RX/TX
325 * queue for an Ethernet port.
327 struct rte_eth_thresh {
328 uint8_t pthresh; /**< Ring prefetch threshold. */
329 uint8_t hthresh; /**< Ring host threshold. */
330 uint8_t wthresh; /**< Ring writeback threshold. */
334 * Simple flags are used for rte_eth_conf.rxmode.mq_mode.
336 #define ETH_MQ_RX_RSS_FLAG 0x1
337 #define ETH_MQ_RX_DCB_FLAG 0x2
338 #define ETH_MQ_RX_VMDQ_FLAG 0x4
341 * A set of values to identify what method is to be used to route
342 * packets to multiple queues.
344 enum rte_eth_rx_mq_mode {
345 /** None of DCB,RSS or VMDQ mode */
348 /** For RX side, only RSS is on */
349 ETH_MQ_RX_RSS = ETH_MQ_RX_RSS_FLAG,
350 /** For RX side,only DCB is on. */
351 ETH_MQ_RX_DCB = ETH_MQ_RX_DCB_FLAG,
352 /** Both DCB and RSS enable */
353 ETH_MQ_RX_DCB_RSS = ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_DCB_FLAG,
355 /** Only VMDQ, no RSS nor DCB */
356 ETH_MQ_RX_VMDQ_ONLY = ETH_MQ_RX_VMDQ_FLAG,
357 /** RSS mode with VMDQ */
358 ETH_MQ_RX_VMDQ_RSS = ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_VMDQ_FLAG,
359 /** Use VMDQ+DCB to route traffic to queues */
360 ETH_MQ_RX_VMDQ_DCB = ETH_MQ_RX_VMDQ_FLAG | ETH_MQ_RX_DCB_FLAG,
361 /** Enable both VMDQ and DCB in VMDq */
362 ETH_MQ_RX_VMDQ_DCB_RSS = ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_DCB_FLAG |
367 * for rx mq mode backward compatible
369 #define ETH_RSS ETH_MQ_RX_RSS
370 #define VMDQ_DCB ETH_MQ_RX_VMDQ_DCB
371 #define ETH_DCB_RX ETH_MQ_RX_DCB
374 * A set of values to identify what method is to be used to transmit
375 * packets using multi-TCs.
377 enum rte_eth_tx_mq_mode {
378 ETH_MQ_TX_NONE = 0, /**< It is in neither DCB nor VT mode. */
379 ETH_MQ_TX_DCB, /**< For TX side,only DCB is on. */
380 ETH_MQ_TX_VMDQ_DCB, /**< For TX side,both DCB and VT is on. */
381 ETH_MQ_TX_VMDQ_ONLY, /**< Only VT on, no DCB */
385 * for tx mq mode backward compatible
387 #define ETH_DCB_NONE ETH_MQ_TX_NONE
388 #define ETH_VMDQ_DCB_TX ETH_MQ_TX_VMDQ_DCB
389 #define ETH_DCB_TX ETH_MQ_TX_DCB
392 * A structure used to configure the RX features of an Ethernet port.
394 struct rte_eth_rxmode {
395 /** The multi-queue packet distribution mode to be used, e.g. RSS. */
396 enum rte_eth_rx_mq_mode mq_mode;
397 uint32_t max_rx_pkt_len; /**< Only used if JUMBO_FRAME enabled. */
398 uint16_t split_hdr_size; /**< hdr buf size (header_split enabled).*/
400 * Per-port Rx offloads to be set using DEV_RX_OFFLOAD_* flags.
401 * Only offloads set on rx_offload_capa field on rte_eth_dev_info
402 * structure are allowed to be set.
408 * VLAN types to indicate if it is for single VLAN, inner VLAN or outer VLAN.
409 * Note that single VLAN is treated the same as inner VLAN.
412 ETH_VLAN_TYPE_UNKNOWN = 0,
413 ETH_VLAN_TYPE_INNER, /**< Inner VLAN. */
414 ETH_VLAN_TYPE_OUTER, /**< Single VLAN, or outer VLAN. */
419 * A structure used to describe a vlan filter.
420 * If the bit corresponding to a VID is set, such VID is on.
422 struct rte_vlan_filter_conf {
427 * A structure used to configure the Receive Side Scaling (RSS) feature
428 * of an Ethernet port.
429 * If not NULL, the *rss_key* pointer of the *rss_conf* structure points
430 * to an array holding the RSS key to use for hashing specific header
431 * fields of received packets. The length of this array should be indicated
432 * by *rss_key_len* below. Otherwise, a default random hash key is used by
435 * The *rss_key_len* field of the *rss_conf* structure indicates the length
436 * in bytes of the array pointed by *rss_key*. To be compatible, this length
437 * will be checked in i40e only. Others assume 40 bytes to be used as before.
439 * The *rss_hf* field of the *rss_conf* structure indicates the different
440 * types of IPv4/IPv6 packets to which the RSS hashing must be applied.
441 * Supplying an *rss_hf* equal to zero disables the RSS feature.
443 struct rte_eth_rss_conf {
444 uint8_t *rss_key; /**< If not NULL, 40-byte hash key. */
445 uint8_t rss_key_len; /**< hash key length in bytes. */
446 uint64_t rss_hf; /**< Hash functions to apply - see below. */
450 * A packet can be identified by hardware as different flow types. Different
451 * NIC hardware may support different flow types.
452 * Basically, the NIC hardware identifies the flow type as deep protocol as
453 * possible, and exclusively. For example, if a packet is identified as
454 * 'RTE_ETH_FLOW_NONFRAG_IPV4_TCP', it will not be any of other flow types,
455 * though it is an actual IPV4 packet.
456 * Note that the flow types are used to define RSS offload types.
458 #define RTE_ETH_FLOW_UNKNOWN 0
459 #define RTE_ETH_FLOW_RAW 1
460 #define RTE_ETH_FLOW_IPV4 2
461 #define RTE_ETH_FLOW_FRAG_IPV4 3
462 #define RTE_ETH_FLOW_NONFRAG_IPV4_TCP 4
463 #define RTE_ETH_FLOW_NONFRAG_IPV4_UDP 5
464 #define RTE_ETH_FLOW_NONFRAG_IPV4_SCTP 6
465 #define RTE_ETH_FLOW_NONFRAG_IPV4_OTHER 7
466 #define RTE_ETH_FLOW_IPV6 8
467 #define RTE_ETH_FLOW_FRAG_IPV6 9
468 #define RTE_ETH_FLOW_NONFRAG_IPV6_TCP 10
469 #define RTE_ETH_FLOW_NONFRAG_IPV6_UDP 11
470 #define RTE_ETH_FLOW_NONFRAG_IPV6_SCTP 12
471 #define RTE_ETH_FLOW_NONFRAG_IPV6_OTHER 13
472 #define RTE_ETH_FLOW_L2_PAYLOAD 14
473 #define RTE_ETH_FLOW_IPV6_EX 15
474 #define RTE_ETH_FLOW_IPV6_TCP_EX 16
475 #define RTE_ETH_FLOW_IPV6_UDP_EX 17
476 #define RTE_ETH_FLOW_PORT 18
477 /**< Consider device port number as a flow differentiator */
478 #define RTE_ETH_FLOW_VXLAN 19 /**< VXLAN protocol based flow */
479 #define RTE_ETH_FLOW_GENEVE 20 /**< GENEVE protocol based flow */
480 #define RTE_ETH_FLOW_NVGRE 21 /**< NVGRE protocol based flow */
481 #define RTE_ETH_FLOW_VXLAN_GPE 22 /**< VXLAN-GPE protocol based flow */
482 #define RTE_ETH_FLOW_GTPU 23 /**< GTPU protocol based flow */
483 #define RTE_ETH_FLOW_MAX 24
486 * The RSS offload types are defined based on flow types.
487 * Different NIC hardware may support different RSS offload
488 * types. The supported flow types or RSS offload types can be queried by
489 * rte_eth_dev_info_get().
491 #define ETH_RSS_IPV4 (1ULL << RTE_ETH_FLOW_IPV4)
492 #define ETH_RSS_FRAG_IPV4 (1ULL << RTE_ETH_FLOW_FRAG_IPV4)
493 #define ETH_RSS_NONFRAG_IPV4_TCP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV4_TCP)
494 #define ETH_RSS_NONFRAG_IPV4_UDP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV4_UDP)
495 #define ETH_RSS_NONFRAG_IPV4_SCTP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV4_SCTP)
496 #define ETH_RSS_NONFRAG_IPV4_OTHER (1ULL << RTE_ETH_FLOW_NONFRAG_IPV4_OTHER)
497 #define ETH_RSS_IPV6 (1ULL << RTE_ETH_FLOW_IPV6)
498 #define ETH_RSS_FRAG_IPV6 (1ULL << RTE_ETH_FLOW_FRAG_IPV6)
499 #define ETH_RSS_NONFRAG_IPV6_TCP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV6_TCP)
500 #define ETH_RSS_NONFRAG_IPV6_UDP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV6_UDP)
501 #define ETH_RSS_NONFRAG_IPV6_SCTP (1ULL << RTE_ETH_FLOW_NONFRAG_IPV6_SCTP)
502 #define ETH_RSS_NONFRAG_IPV6_OTHER (1ULL << RTE_ETH_FLOW_NONFRAG_IPV6_OTHER)
503 #define ETH_RSS_L2_PAYLOAD (1ULL << RTE_ETH_FLOW_L2_PAYLOAD)
504 #define ETH_RSS_IPV6_EX (1ULL << RTE_ETH_FLOW_IPV6_EX)
505 #define ETH_RSS_IPV6_TCP_EX (1ULL << RTE_ETH_FLOW_IPV6_TCP_EX)
506 #define ETH_RSS_IPV6_UDP_EX (1ULL << RTE_ETH_FLOW_IPV6_UDP_EX)
507 #define ETH_RSS_PORT (1ULL << RTE_ETH_FLOW_PORT)
508 #define ETH_RSS_VXLAN (1ULL << RTE_ETH_FLOW_VXLAN)
509 #define ETH_RSS_GENEVE (1ULL << RTE_ETH_FLOW_GENEVE)
510 #define ETH_RSS_NVGRE (1ULL << RTE_ETH_FLOW_NVGRE)
511 #define ETH_RSS_GTPU (1ULL << RTE_ETH_FLOW_GTPU)
513 #define ETH_RSS_IP ( \
515 ETH_RSS_FRAG_IPV4 | \
516 ETH_RSS_NONFRAG_IPV4_OTHER | \
518 ETH_RSS_FRAG_IPV6 | \
519 ETH_RSS_NONFRAG_IPV6_OTHER | \
522 #define ETH_RSS_UDP ( \
523 ETH_RSS_NONFRAG_IPV4_UDP | \
524 ETH_RSS_NONFRAG_IPV6_UDP | \
527 #define ETH_RSS_TCP ( \
528 ETH_RSS_NONFRAG_IPV4_TCP | \
529 ETH_RSS_NONFRAG_IPV6_TCP | \
532 #define ETH_RSS_SCTP ( \
533 ETH_RSS_NONFRAG_IPV4_SCTP | \
534 ETH_RSS_NONFRAG_IPV6_SCTP)
536 #define ETH_RSS_TUNNEL ( \
541 /**< Mask of valid RSS hash protocols */
542 #define ETH_RSS_PROTO_MASK ( \
544 ETH_RSS_FRAG_IPV4 | \
545 ETH_RSS_NONFRAG_IPV4_TCP | \
546 ETH_RSS_NONFRAG_IPV4_UDP | \
547 ETH_RSS_NONFRAG_IPV4_SCTP | \
548 ETH_RSS_NONFRAG_IPV4_OTHER | \
550 ETH_RSS_FRAG_IPV6 | \
551 ETH_RSS_NONFRAG_IPV6_TCP | \
552 ETH_RSS_NONFRAG_IPV6_UDP | \
553 ETH_RSS_NONFRAG_IPV6_SCTP | \
554 ETH_RSS_NONFRAG_IPV6_OTHER | \
555 ETH_RSS_L2_PAYLOAD | \
557 ETH_RSS_IPV6_TCP_EX | \
558 ETH_RSS_IPV6_UDP_EX | \
565 * Definitions used for redirection table entry size.
566 * Some RSS RETA sizes may not be supported by some drivers, check the
567 * documentation or the description of relevant functions for more details.
569 #define ETH_RSS_RETA_SIZE_64 64
570 #define ETH_RSS_RETA_SIZE_128 128
571 #define ETH_RSS_RETA_SIZE_256 256
572 #define ETH_RSS_RETA_SIZE_512 512
573 #define RTE_RETA_GROUP_SIZE 64
575 /* Definitions used for VMDQ and DCB functionality */
576 #define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters. */
577 #define ETH_DCB_NUM_USER_PRIORITIES 8 /**< Maximum nb. of DCB priorities. */
578 #define ETH_VMDQ_DCB_NUM_QUEUES 128 /**< Maximum nb. of VMDQ DCB queues. */
579 #define ETH_DCB_NUM_QUEUES 128 /**< Maximum nb. of DCB queues. */
581 /* DCB capability defines */
582 #define ETH_DCB_PG_SUPPORT 0x00000001 /**< Priority Group(ETS) support. */
583 #define ETH_DCB_PFC_SUPPORT 0x00000002 /**< Priority Flow Control support. */
585 /* Definitions used for VLAN Offload functionality */
586 #define ETH_VLAN_STRIP_OFFLOAD 0x0001 /**< VLAN Strip On/Off */
587 #define ETH_VLAN_FILTER_OFFLOAD 0x0002 /**< VLAN Filter On/Off */
588 #define ETH_VLAN_EXTEND_OFFLOAD 0x0004 /**< VLAN Extend On/Off */
589 #define ETH_QINQ_STRIP_OFFLOAD 0x0008 /**< QINQ Strip On/Off */
591 /* Definitions used for mask VLAN setting */
592 #define ETH_VLAN_STRIP_MASK 0x0001 /**< VLAN Strip setting mask */
593 #define ETH_VLAN_FILTER_MASK 0x0002 /**< VLAN Filter setting mask*/
594 #define ETH_VLAN_EXTEND_MASK 0x0004 /**< VLAN Extend setting mask*/
595 #define ETH_QINQ_STRIP_MASK 0x0008 /**< QINQ Strip setting mask */
596 #define ETH_VLAN_ID_MAX 0x0FFF /**< VLAN ID is in lower 12 bits*/
598 /* Definitions used for receive MAC address */
599 #define ETH_NUM_RECEIVE_MAC_ADDR 128 /**< Maximum nb. of receive mac addr. */
601 /* Definitions used for unicast hash */
602 #define ETH_VMDQ_NUM_UC_HASH_ARRAY 128 /**< Maximum nb. of UC hash array. */
604 /* Definitions used for VMDQ pool rx mode setting */
605 #define ETH_VMDQ_ACCEPT_UNTAG 0x0001 /**< accept untagged packets. */
606 #define ETH_VMDQ_ACCEPT_HASH_MC 0x0002 /**< accept packets in multicast table . */
607 #define ETH_VMDQ_ACCEPT_HASH_UC 0x0004 /**< accept packets in unicast table. */
608 #define ETH_VMDQ_ACCEPT_BROADCAST 0x0008 /**< accept broadcast packets. */
609 #define ETH_VMDQ_ACCEPT_MULTICAST 0x0010 /**< multicast promiscuous. */
611 /** Maximum nb. of vlan per mirror rule */
612 #define ETH_MIRROR_MAX_VLANS 64
614 #define ETH_MIRROR_VIRTUAL_POOL_UP 0x01 /**< Virtual Pool uplink Mirroring. */
615 #define ETH_MIRROR_UPLINK_PORT 0x02 /**< Uplink Port Mirroring. */
616 #define ETH_MIRROR_DOWNLINK_PORT 0x04 /**< Downlink Port Mirroring. */
617 #define ETH_MIRROR_VLAN 0x08 /**< VLAN Mirroring. */
618 #define ETH_MIRROR_VIRTUAL_POOL_DOWN 0x10 /**< Virtual Pool downlink Mirroring. */
621 * A structure used to configure VLAN traffic mirror of an Ethernet port.
623 struct rte_eth_vlan_mirror {
624 uint64_t vlan_mask; /**< mask for valid VLAN ID. */
625 /** VLAN ID list for vlan mirroring. */
626 uint16_t vlan_id[ETH_MIRROR_MAX_VLANS];
630 * A structure used to configure traffic mirror of an Ethernet port.
632 struct rte_eth_mirror_conf {
633 uint8_t rule_type; /**< Mirroring rule type */
634 uint8_t dst_pool; /**< Destination pool for this mirror rule. */
635 uint64_t pool_mask; /**< Bitmap of pool for pool mirroring */
636 /** VLAN ID setting for VLAN mirroring. */
637 struct rte_eth_vlan_mirror vlan;
641 * A structure used to configure 64 entries of Redirection Table of the
642 * Receive Side Scaling (RSS) feature of an Ethernet port. To configure
643 * more than 64 entries supported by hardware, an array of this structure
646 struct rte_eth_rss_reta_entry64 {
648 /**< Mask bits indicate which entries need to be updated/queried. */
649 uint16_t reta[RTE_RETA_GROUP_SIZE];
650 /**< Group of 64 redirection table entries. */
654 * This enum indicates the possible number of traffic classes
655 * in DCB configurations
657 enum rte_eth_nb_tcs {
658 ETH_4_TCS = 4, /**< 4 TCs with DCB. */
659 ETH_8_TCS = 8 /**< 8 TCs with DCB. */
663 * This enum indicates the possible number of queue pools
664 * in VMDQ configurations.
666 enum rte_eth_nb_pools {
667 ETH_8_POOLS = 8, /**< 8 VMDq pools. */
668 ETH_16_POOLS = 16, /**< 16 VMDq pools. */
669 ETH_32_POOLS = 32, /**< 32 VMDq pools. */
670 ETH_64_POOLS = 64 /**< 64 VMDq pools. */
673 /* This structure may be extended in future. */
674 struct rte_eth_dcb_rx_conf {
675 enum rte_eth_nb_tcs nb_tcs; /**< Possible DCB TCs, 4 or 8 TCs */
676 /** Traffic class each UP mapped to. */
677 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
680 struct rte_eth_vmdq_dcb_tx_conf {
681 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools. */
682 /** Traffic class each UP mapped to. */
683 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
686 struct rte_eth_dcb_tx_conf {
687 enum rte_eth_nb_tcs nb_tcs; /**< Possible DCB TCs, 4 or 8 TCs. */
688 /** Traffic class each UP mapped to. */
689 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
692 struct rte_eth_vmdq_tx_conf {
693 enum rte_eth_nb_pools nb_queue_pools; /**< VMDq mode, 64 pools. */
697 * A structure used to configure the VMDQ+DCB feature
698 * of an Ethernet port.
700 * Using this feature, packets are routed to a pool of queues, based
701 * on the vlan id in the vlan tag, and then to a specific queue within
702 * that pool, using the user priority vlan tag field.
704 * A default pool may be used, if desired, to route all traffic which
705 * does not match the vlan filter rules.
707 struct rte_eth_vmdq_dcb_conf {
708 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
709 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
710 uint8_t default_pool; /**< The default pool, if applicable */
711 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
713 uint16_t vlan_id; /**< The vlan id of the received frame */
714 uint64_t pools; /**< Bitmask of pools for packet rx */
715 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
716 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
717 /**< Selects a queue in a pool */
721 * A structure used to configure the VMDQ feature of an Ethernet port when
722 * not combined with the DCB feature.
724 * Using this feature, packets are routed to a pool of queues. By default,
725 * the pool selection is based on the MAC address, the vlan id in the
726 * vlan tag as specified in the pool_map array.
727 * Passing the ETH_VMDQ_ACCEPT_UNTAG in the rx_mode field allows pool
728 * selection using only the MAC address. MAC address to pool mapping is done
729 * using the rte_eth_dev_mac_addr_add function, with the pool parameter
730 * corresponding to the pool id.
732 * Queue selection within the selected pool will be done using RSS when
733 * it is enabled or revert to the first queue of the pool if not.
735 * A default pool may be used, if desired, to route all traffic which
736 * does not match the vlan filter rules or any pool MAC address.
738 struct rte_eth_vmdq_rx_conf {
739 enum rte_eth_nb_pools nb_queue_pools; /**< VMDq only mode, 8 or 64 pools */
740 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
741 uint8_t default_pool; /**< The default pool, if applicable */
742 uint8_t enable_loop_back; /**< Enable VT loop back */
743 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
744 uint32_t rx_mode; /**< Flags from ETH_VMDQ_ACCEPT_* */
746 uint16_t vlan_id; /**< The vlan id of the received frame */
747 uint64_t pools; /**< Bitmask of pools for packet rx */
748 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
752 * A structure used to configure the TX features of an Ethernet port.
754 struct rte_eth_txmode {
755 enum rte_eth_tx_mq_mode mq_mode; /**< TX multi-queues mode. */
757 * Per-port Tx offloads to be set using DEV_TX_OFFLOAD_* flags.
758 * Only offloads set on tx_offload_capa field on rte_eth_dev_info
759 * structure are allowed to be set.
763 /* For i40e specifically */
766 uint8_t hw_vlan_reject_tagged : 1,
767 /**< If set, reject sending out tagged pkts */
768 hw_vlan_reject_untagged : 1,
769 /**< If set, reject sending out untagged pkts */
770 hw_vlan_insert_pvid : 1;
771 /**< If set, enable port based VLAN insertion */
775 * A structure used to configure an RX ring of an Ethernet port.
777 struct rte_eth_rxconf {
778 struct rte_eth_thresh rx_thresh; /**< RX ring threshold registers. */
779 uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
780 uint8_t rx_drop_en; /**< Drop packets if no descriptors are available. */
781 uint8_t rx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */
783 * Per-queue Rx offloads to be set using DEV_RX_OFFLOAD_* flags.
784 * Only offloads set on rx_queue_offload_capa or rx_offload_capa
785 * fields on rte_eth_dev_info structure are allowed to be set.
791 * A structure used to configure a TX ring of an Ethernet port.
793 struct rte_eth_txconf {
794 struct rte_eth_thresh tx_thresh; /**< TX ring threshold registers. */
795 uint16_t tx_rs_thresh; /**< Drives the setting of RS bit on TXDs. */
796 uint16_t tx_free_thresh; /**< Start freeing TX buffers if there are
797 less free descriptors than this value. */
799 uint8_t tx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */
801 * Per-queue Tx offloads to be set using DEV_TX_OFFLOAD_* flags.
802 * Only offloads set on tx_queue_offload_capa or tx_offload_capa
803 * fields on rte_eth_dev_info structure are allowed to be set.
809 * A structure contains information about HW descriptor ring limitations.
811 struct rte_eth_desc_lim {
812 uint16_t nb_max; /**< Max allowed number of descriptors. */
813 uint16_t nb_min; /**< Min allowed number of descriptors. */
814 uint16_t nb_align; /**< Number of descriptors should be aligned to. */
817 * Max allowed number of segments per whole packet.
819 * - For TSO packet this is the total number of data descriptors allowed
822 * @see nb_mtu_seg_max
827 * Max number of segments per one MTU.
829 * - For non-TSO packet, this is the maximum allowed number of segments
830 * in a single transmit packet.
832 * - For TSO packet each segment within the TSO may span up to this
837 uint16_t nb_mtu_seg_max;
841 * This enum indicates the flow control mode
843 enum rte_eth_fc_mode {
844 RTE_FC_NONE = 0, /**< Disable flow control. */
845 RTE_FC_RX_PAUSE, /**< RX pause frame, enable flowctrl on TX side. */
846 RTE_FC_TX_PAUSE, /**< TX pause frame, enable flowctrl on RX side. */
847 RTE_FC_FULL /**< Enable flow control on both side. */
851 * A structure used to configure Ethernet flow control parameter.
852 * These parameters will be configured into the register of the NIC.
853 * Please refer to the corresponding data sheet for proper value.
855 struct rte_eth_fc_conf {
856 uint32_t high_water; /**< High threshold value to trigger XOFF */
857 uint32_t low_water; /**< Low threshold value to trigger XON */
858 uint16_t pause_time; /**< Pause quota in the Pause frame */
859 uint16_t send_xon; /**< Is XON frame need be sent */
860 enum rte_eth_fc_mode mode; /**< Link flow control mode */
861 uint8_t mac_ctrl_frame_fwd; /**< Forward MAC control frames */
862 uint8_t autoneg; /**< Use Pause autoneg */
866 * A structure used to configure Ethernet priority flow control parameter.
867 * These parameters will be configured into the register of the NIC.
868 * Please refer to the corresponding data sheet for proper value.
870 struct rte_eth_pfc_conf {
871 struct rte_eth_fc_conf fc; /**< General flow control parameter. */
872 uint8_t priority; /**< VLAN User Priority. */
878 enum rte_eth_tunnel_type {
879 RTE_TUNNEL_TYPE_NONE = 0,
880 RTE_TUNNEL_TYPE_VXLAN,
881 RTE_TUNNEL_TYPE_GENEVE,
882 RTE_TUNNEL_TYPE_TEREDO,
883 RTE_TUNNEL_TYPE_NVGRE,
884 RTE_TUNNEL_TYPE_IP_IN_GRE,
885 RTE_L2_TUNNEL_TYPE_E_TAG,
886 RTE_TUNNEL_TYPE_VXLAN_GPE,
890 /* Deprecated API file for rte_eth_dev_filter_* functions */
891 #include "rte_eth_ctrl.h"
894 * Memory space that can be configured to store Flow Director filters
895 * in the board memory.
897 enum rte_fdir_pballoc_type {
898 RTE_FDIR_PBALLOC_64K = 0, /**< 64k. */
899 RTE_FDIR_PBALLOC_128K, /**< 128k. */
900 RTE_FDIR_PBALLOC_256K, /**< 256k. */
904 * Select report mode of FDIR hash information in RX descriptors.
906 enum rte_fdir_status_mode {
907 RTE_FDIR_NO_REPORT_STATUS = 0, /**< Never report FDIR hash. */
908 RTE_FDIR_REPORT_STATUS, /**< Only report FDIR hash for matching pkts. */
909 RTE_FDIR_REPORT_STATUS_ALWAYS, /**< Always report FDIR hash. */
913 * A structure used to configure the Flow Director (FDIR) feature
914 * of an Ethernet port.
916 * If mode is RTE_FDIR_MODE_NONE, the pballoc value is ignored.
918 struct rte_fdir_conf {
919 enum rte_fdir_mode mode; /**< Flow Director mode. */
920 enum rte_fdir_pballoc_type pballoc; /**< Space for FDIR filters. */
921 enum rte_fdir_status_mode status; /**< How to report FDIR hash. */
922 /** RX queue of packets matching a "drop" filter in perfect mode. */
924 struct rte_eth_fdir_masks mask;
925 struct rte_eth_fdir_flex_conf flex_conf;
926 /**< Flex payload configuration. */
930 * UDP tunneling configuration.
931 * Used to config the UDP port for a type of tunnel.
932 * NICs need the UDP port to identify the tunnel type.
933 * Normally a type of tunnel has a default UDP port, this structure can be used
934 * in case if the users want to change or support more UDP port.
936 struct rte_eth_udp_tunnel {
937 uint16_t udp_port; /**< UDP port used for the tunnel. */
938 uint8_t prot_type; /**< Tunnel type. Defined in rte_eth_tunnel_type. */
942 * A structure used to enable/disable specific device interrupts.
944 struct rte_intr_conf {
945 /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
947 /** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
949 /** enable/disable rmv interrupt. 0 (default) - disable, 1 enable */
954 * A structure used to configure an Ethernet port.
955 * Depending upon the RX multi-queue mode, extra advanced
956 * configuration settings may be needed.
958 struct rte_eth_conf {
959 uint32_t link_speeds; /**< bitmap of ETH_LINK_SPEED_XXX of speeds to be
960 used. ETH_LINK_SPEED_FIXED disables link
961 autonegotiation, and a unique speed shall be
962 set. Otherwise, the bitmap defines the set of
963 speeds to be advertised. If the special value
964 ETH_LINK_SPEED_AUTONEG (0) is used, all speeds
965 supported are advertised. */
966 struct rte_eth_rxmode rxmode; /**< Port RX configuration. */
967 struct rte_eth_txmode txmode; /**< Port TX configuration. */
968 uint32_t lpbk_mode; /**< Loopback operation mode. By default the value
969 is 0, meaning the loopback mode is disabled.
970 Read the datasheet of given ethernet controller
971 for details. The possible values of this field
972 are defined in implementation of each driver. */
974 struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
975 struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
976 /**< Port vmdq+dcb configuration. */
977 struct rte_eth_dcb_rx_conf dcb_rx_conf;
978 /**< Port dcb RX configuration. */
979 struct rte_eth_vmdq_rx_conf vmdq_rx_conf;
980 /**< Port vmdq RX configuration. */
981 } rx_adv_conf; /**< Port RX filtering configuration. */
983 struct rte_eth_vmdq_dcb_tx_conf vmdq_dcb_tx_conf;
984 /**< Port vmdq+dcb TX configuration. */
985 struct rte_eth_dcb_tx_conf dcb_tx_conf;
986 /**< Port dcb TX configuration. */
987 struct rte_eth_vmdq_tx_conf vmdq_tx_conf;
988 /**< Port vmdq TX configuration. */
989 } tx_adv_conf; /**< Port TX DCB configuration (union). */
990 /** Currently,Priority Flow Control(PFC) are supported,if DCB with PFC
991 is needed,and the variable must be set ETH_DCB_PFC_SUPPORT. */
992 uint32_t dcb_capability_en;
993 struct rte_fdir_conf fdir_conf; /**< FDIR configuration. DEPRECATED */
994 struct rte_intr_conf intr_conf; /**< Interrupt mode configuration. */
998 * RX offload capabilities of a device.
1000 #define DEV_RX_OFFLOAD_VLAN_STRIP 0x00000001
1001 #define DEV_RX_OFFLOAD_IPV4_CKSUM 0x00000002
1002 #define DEV_RX_OFFLOAD_UDP_CKSUM 0x00000004
1003 #define DEV_RX_OFFLOAD_TCP_CKSUM 0x00000008
1004 #define DEV_RX_OFFLOAD_TCP_LRO 0x00000010
1005 #define DEV_RX_OFFLOAD_QINQ_STRIP 0x00000020
1006 #define DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000040
1007 #define DEV_RX_OFFLOAD_MACSEC_STRIP 0x00000080
1008 #define DEV_RX_OFFLOAD_HEADER_SPLIT 0x00000100
1009 #define DEV_RX_OFFLOAD_VLAN_FILTER 0x00000200
1010 #define DEV_RX_OFFLOAD_VLAN_EXTEND 0x00000400
1011 #define DEV_RX_OFFLOAD_JUMBO_FRAME 0x00000800
1012 #define DEV_RX_OFFLOAD_SCATTER 0x00002000
1013 #define DEV_RX_OFFLOAD_TIMESTAMP 0x00004000
1014 #define DEV_RX_OFFLOAD_SECURITY 0x00008000
1015 #define DEV_RX_OFFLOAD_KEEP_CRC 0x00010000
1016 #define DEV_RX_OFFLOAD_SCTP_CKSUM 0x00020000
1017 #define DEV_RX_OFFLOAD_OUTER_UDP_CKSUM 0x00040000
1019 #define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
1020 DEV_RX_OFFLOAD_UDP_CKSUM | \
1021 DEV_RX_OFFLOAD_TCP_CKSUM)
1022 #define DEV_RX_OFFLOAD_VLAN (DEV_RX_OFFLOAD_VLAN_STRIP | \
1023 DEV_RX_OFFLOAD_VLAN_FILTER | \
1024 DEV_RX_OFFLOAD_VLAN_EXTEND | \
1025 DEV_RX_OFFLOAD_QINQ_STRIP)
1028 * If new Rx offload capabilities are defined, they also must be
1029 * mentioned in rte_rx_offload_names in rte_ethdev.c file.
1033 * TX offload capabilities of a device.
1035 #define DEV_TX_OFFLOAD_VLAN_INSERT 0x00000001
1036 #define DEV_TX_OFFLOAD_IPV4_CKSUM 0x00000002
1037 #define DEV_TX_OFFLOAD_UDP_CKSUM 0x00000004
1038 #define DEV_TX_OFFLOAD_TCP_CKSUM 0x00000008
1039 #define DEV_TX_OFFLOAD_SCTP_CKSUM 0x00000010
1040 #define DEV_TX_OFFLOAD_TCP_TSO 0x00000020
1041 #define DEV_TX_OFFLOAD_UDP_TSO 0x00000040
1042 #define DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000080 /**< Used for tunneling packet. */
1043 #define DEV_TX_OFFLOAD_QINQ_INSERT 0x00000100
1044 #define DEV_TX_OFFLOAD_VXLAN_TNL_TSO 0x00000200 /**< Used for tunneling packet. */
1045 #define DEV_TX_OFFLOAD_GRE_TNL_TSO 0x00000400 /**< Used for tunneling packet. */
1046 #define DEV_TX_OFFLOAD_IPIP_TNL_TSO 0x00000800 /**< Used for tunneling packet. */
1047 #define DEV_TX_OFFLOAD_GENEVE_TNL_TSO 0x00001000 /**< Used for tunneling packet. */
1048 #define DEV_TX_OFFLOAD_MACSEC_INSERT 0x00002000
1049 #define DEV_TX_OFFLOAD_MT_LOCKFREE 0x00004000
1050 /**< Multiple threads can invoke rte_eth_tx_burst() concurrently on the same
1051 * tx queue without SW lock.
1053 #define DEV_TX_OFFLOAD_MULTI_SEGS 0x00008000
1054 /**< Device supports multi segment send. */
1055 #define DEV_TX_OFFLOAD_MBUF_FAST_FREE 0x00010000
1056 /**< Device supports optimization for fast release of mbufs.
1057 * When set application must guarantee that per-queue all mbufs comes from
1058 * the same mempool and has refcnt = 1.
1060 #define DEV_TX_OFFLOAD_SECURITY 0x00020000
1062 * Device supports generic UDP tunneled packet TSO.
1063 * Application must set PKT_TX_TUNNEL_UDP and other mbuf fields required
1066 #define DEV_TX_OFFLOAD_UDP_TNL_TSO 0x00040000
1068 * Device supports generic IP tunneled packet TSO.
1069 * Application must set PKT_TX_TUNNEL_IP and other mbuf fields required
1072 #define DEV_TX_OFFLOAD_IP_TNL_TSO 0x00080000
1073 /** Device supports outer UDP checksum */
1074 #define DEV_TX_OFFLOAD_OUTER_UDP_CKSUM 0x00100000
1076 * Device supports match on metadata Tx offload..
1077 * Application must set PKT_TX_METADATA and mbuf metadata field.
1079 #define DEV_TX_OFFLOAD_MATCH_METADATA 0x00200000
1081 #define RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP 0x00000001
1082 /**< Device supports Rx queue setup after device started*/
1083 #define RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP 0x00000002
1084 /**< Device supports Tx queue setup after device started*/
1087 * If new Tx offload capabilities are defined, they also must be
1088 * mentioned in rte_tx_offload_names in rte_ethdev.c file.
1092 * Fallback default preferred Rx/Tx port parameters.
1093 * These are used if an application requests default parameters
1094 * but the PMD does not provide preferred values.
1096 #define RTE_ETH_DEV_FALLBACK_RX_RINGSIZE 512
1097 #define RTE_ETH_DEV_FALLBACK_TX_RINGSIZE 512
1098 #define RTE_ETH_DEV_FALLBACK_RX_NBQUEUES 1
1099 #define RTE_ETH_DEV_FALLBACK_TX_NBQUEUES 1
1102 * Preferred Rx/Tx port parameters.
1103 * There are separate instances of this structure for transmission
1104 * and reception respectively.
1106 struct rte_eth_dev_portconf {
1107 uint16_t burst_size; /**< Device-preferred burst size */
1108 uint16_t ring_size; /**< Device-preferred size of queue rings */
1109 uint16_t nb_queues; /**< Device-preferred number of queues */
1113 * Default values for switch domain id when ethdev does not support switch
1114 * domain definitions.
1116 #define RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID (0)
1119 * Ethernet device associated switch information
1121 struct rte_eth_switch_info {
1122 const char *name; /**< switch name */
1123 uint16_t domain_id; /**< switch domain id */
1126 * mapping to the devices physical switch port as enumerated from the
1127 * perspective of the embedded interconnect/switch. For SR-IOV enabled
1128 * device this may correspond to the VF_ID of each virtual function,
1129 * but each driver should explicitly define the mapping of switch
1130 * port identifier to that physical interconnect/switch
1135 * Ethernet device information
1139 * A structure used to retrieve the contextual information of
1140 * an Ethernet device, such as the controlling driver of the
1143 struct rte_eth_dev_info {
1144 struct rte_device *device; /** Generic device information */
1145 const char *driver_name; /**< Device Driver name. */
1146 unsigned int if_index; /**< Index to bound host interface, or 0 if none.
1147 Use if_indextoname() to translate into an interface name. */
1148 uint16_t min_mtu; /**< Minimum MTU allowed */
1149 uint16_t max_mtu; /**< Maximum MTU allowed */
1150 const uint32_t *dev_flags; /**< Device flags */
1151 uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */
1152 uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */
1153 uint16_t max_rx_queues; /**< Maximum number of RX queues. */
1154 uint16_t max_tx_queues; /**< Maximum number of TX queues. */
1155 uint32_t max_mac_addrs; /**< Maximum number of MAC addresses. */
1156 uint32_t max_hash_mac_addrs;
1157 /** Maximum number of hash MAC addresses for MTA and UTA. */
1158 uint16_t max_vfs; /**< Maximum number of VFs. */
1159 uint16_t max_vmdq_pools; /**< Maximum number of VMDq pools. */
1160 uint64_t rx_offload_capa;
1161 /**< All RX offload capabilities including all per-queue ones */
1162 uint64_t tx_offload_capa;
1163 /**< All TX offload capabilities including all per-queue ones */
1164 uint64_t rx_queue_offload_capa;
1165 /**< Device per-queue RX offload capabilities. */
1166 uint64_t tx_queue_offload_capa;
1167 /**< Device per-queue TX offload capabilities. */
1169 /**< Device redirection table size, the total number of entries. */
1170 uint8_t hash_key_size; /**< Hash key size in bytes */
1171 /** Bit mask of RSS offloads, the bit offset also means flow type */
1172 uint64_t flow_type_rss_offloads;
1173 struct rte_eth_rxconf default_rxconf; /**< Default RX configuration */
1174 struct rte_eth_txconf default_txconf; /**< Default TX configuration */
1175 uint16_t vmdq_queue_base; /**< First queue ID for VMDQ pools. */
1176 uint16_t vmdq_queue_num; /**< Queue number for VMDQ pools. */
1177 uint16_t vmdq_pool_base; /**< First ID of VMDQ pools. */
1178 struct rte_eth_desc_lim rx_desc_lim; /**< RX descriptors limits */
1179 struct rte_eth_desc_lim tx_desc_lim; /**< TX descriptors limits */
1180 uint32_t speed_capa; /**< Supported speeds bitmap (ETH_LINK_SPEED_). */
1181 /** Configured number of rx/tx queues */
1182 uint16_t nb_rx_queues; /**< Number of RX queues. */
1183 uint16_t nb_tx_queues; /**< Number of TX queues. */
1184 /** Rx parameter recommendations */
1185 struct rte_eth_dev_portconf default_rxportconf;
1186 /** Tx parameter recommendations */
1187 struct rte_eth_dev_portconf default_txportconf;
1188 /** Generic device capabilities (RTE_ETH_DEV_CAPA_). */
1191 * Switching information for ports on a device with a
1192 * embedded managed interconnect/switch.
1194 struct rte_eth_switch_info switch_info;
1198 * Ethernet device RX queue information structure.
1199 * Used to retrieve information about configured queue.
1201 struct rte_eth_rxq_info {
1202 struct rte_mempool *mp; /**< mempool used by that queue. */
1203 struct rte_eth_rxconf conf; /**< queue config parameters. */
1204 uint8_t scattered_rx; /**< scattered packets RX supported. */
1205 uint16_t nb_desc; /**< configured number of RXDs. */
1206 } __rte_cache_min_aligned;
1209 * Ethernet device TX queue information structure.
1210 * Used to retrieve information about configured queue.
1212 struct rte_eth_txq_info {
1213 struct rte_eth_txconf conf; /**< queue config parameters. */
1214 uint16_t nb_desc; /**< configured number of TXDs. */
1215 } __rte_cache_min_aligned;
1218 * Burst mode types, values can be ORed to define the burst mode of a driver.
1220 enum rte_eth_burst_mode_option {
1221 RTE_ETH_BURST_SCALAR = (1 << 0),
1222 RTE_ETH_BURST_VECTOR = (1 << 1),
1224 /**< bits[15:2] are reserved for each vector type */
1225 RTE_ETH_BURST_ALTIVEC = (1 << 2),
1226 RTE_ETH_BURST_NEON = (1 << 3),
1227 RTE_ETH_BURST_SSE = (1 << 4),
1228 RTE_ETH_BURST_AVX2 = (1 << 5),
1229 RTE_ETH_BURST_AVX512 = (1 << 6),
1231 RTE_ETH_BURST_SCATTERED = (1 << 16), /**< Support scattered packets */
1232 RTE_ETH_BURST_BULK_ALLOC = (1 << 17), /**< Support mbuf bulk alloc */
1233 RTE_ETH_BURST_SIMPLE = (1 << 18),
1235 RTE_ETH_BURST_PER_QUEUE = (1 << 19), /**< Support per queue burst */
1239 * Ethernet device RX/TX queue packet burst mode information structure.
1240 * Used to retrieve information about packet burst mode setting.
1242 struct rte_eth_burst_mode {
1246 /** Maximum name length for extended statistics counters */
1247 #define RTE_ETH_XSTATS_NAME_SIZE 64
1250 * An Ethernet device extended statistic structure
1252 * This structure is used by rte_eth_xstats_get() to provide
1253 * statistics that are not provided in the generic *rte_eth_stats*
1255 * It maps a name id, corresponding to an index in the array returned
1256 * by rte_eth_xstats_get_names(), to a statistic value.
1258 struct rte_eth_xstat {
1259 uint64_t id; /**< The index in xstats name array. */
1260 uint64_t value; /**< The statistic counter value. */
1264 * A name element for extended statistics.
1266 * An array of this structure is returned by rte_eth_xstats_get_names().
1267 * It lists the names of extended statistics for a PMD. The *rte_eth_xstat*
1268 * structure references these names by their array index.
1270 struct rte_eth_xstat_name {
1271 char name[RTE_ETH_XSTATS_NAME_SIZE]; /**< The statistic name. */
1274 #define ETH_DCB_NUM_TCS 8
1275 #define ETH_MAX_VMDQ_POOL 64
1278 * A structure used to get the information of queue and
1279 * TC mapping on both TX and RX paths.
1281 struct rte_eth_dcb_tc_queue_mapping {
1282 /** rx queues assigned to tc per Pool */
1286 } tc_rxq[ETH_MAX_VMDQ_POOL][ETH_DCB_NUM_TCS];
1287 /** rx queues assigned to tc per Pool */
1291 } tc_txq[ETH_MAX_VMDQ_POOL][ETH_DCB_NUM_TCS];
1295 * A structure used to get the information of DCB.
1296 * It includes TC UP mapping and queue TC mapping.
1298 struct rte_eth_dcb_info {
1299 uint8_t nb_tcs; /**< number of TCs */
1300 uint8_t prio_tc[ETH_DCB_NUM_USER_PRIORITIES]; /**< Priority to tc */
1301 uint8_t tc_bws[ETH_DCB_NUM_TCS]; /**< TX BW percentage for each TC */
1302 /** rx queues assigned to tc */
1303 struct rte_eth_dcb_tc_queue_mapping tc_queue;
1307 * RX/TX queue states
1309 #define RTE_ETH_QUEUE_STATE_STOPPED 0
1310 #define RTE_ETH_QUEUE_STATE_STARTED 1
1312 #define RTE_ETH_ALL RTE_MAX_ETHPORTS
1314 /* Macros to check for valid port */
1315 #define RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, retval) do { \
1316 if (!rte_eth_dev_is_valid_port(port_id)) { \
1317 RTE_ETHDEV_LOG(ERR, "Invalid port_id=%u\n", port_id); \
1322 #define RTE_ETH_VALID_PORTID_OR_RET(port_id) do { \
1323 if (!rte_eth_dev_is_valid_port(port_id)) { \
1324 RTE_ETHDEV_LOG(ERR, "Invalid port_id=%u\n", port_id); \
1330 * l2 tunnel configuration.
1333 /**< l2 tunnel enable mask */
1334 #define ETH_L2_TUNNEL_ENABLE_MASK 0x00000001
1335 /**< l2 tunnel insertion mask */
1336 #define ETH_L2_TUNNEL_INSERTION_MASK 0x00000002
1337 /**< l2 tunnel stripping mask */
1338 #define ETH_L2_TUNNEL_STRIPPING_MASK 0x00000004
1339 /**< l2 tunnel forwarding mask */
1340 #define ETH_L2_TUNNEL_FORWARDING_MASK 0x00000008
1343 * Function type used for RX packet processing packet callbacks.
1345 * The callback function is called on RX with a burst of packets that have
1346 * been received on the given port and queue.
1349 * The Ethernet port on which RX is being performed.
1351 * The queue on the Ethernet port which is being used to receive the packets.
1353 * The burst of packets that have just been received.
1355 * The number of packets in the burst pointed to by "pkts".
1357 * The max number of packets that can be stored in the "pkts" array.
1359 * The arbitrary user parameter passed in by the application when the callback
1360 * was originally configured.
1362 * The number of packets returned to the user.
1364 typedef uint16_t (*rte_rx_callback_fn)(uint16_t port_id, uint16_t queue,
1365 struct rte_mbuf *pkts[], uint16_t nb_pkts, uint16_t max_pkts,
1369 * Function type used for TX packet processing packet callbacks.
1371 * The callback function is called on TX with a burst of packets immediately
1372 * before the packets are put onto the hardware queue for transmission.
1375 * The Ethernet port on which TX is being performed.
1377 * The queue on the Ethernet port which is being used to transmit the packets.
1379 * The burst of packets that are about to be transmitted.
1381 * The number of packets in the burst pointed to by "pkts".
1383 * The arbitrary user parameter passed in by the application when the callback
1384 * was originally configured.
1386 * The number of packets to be written to the NIC.
1388 typedef uint16_t (*rte_tx_callback_fn)(uint16_t port_id, uint16_t queue,
1389 struct rte_mbuf *pkts[], uint16_t nb_pkts, void *user_param);
1392 * Possible states of an ethdev port.
1394 enum rte_eth_dev_state {
1395 /** Device is unused before being probed. */
1396 RTE_ETH_DEV_UNUSED = 0,
1397 /** Device is attached when allocated in probing. */
1398 RTE_ETH_DEV_ATTACHED,
1399 /** Device is in removed state when plug-out is detected. */
1400 RTE_ETH_DEV_REMOVED,
1403 struct rte_eth_dev_sriov {
1404 uint8_t active; /**< SRIOV is active with 16, 32 or 64 pools */
1405 uint8_t nb_q_per_pool; /**< rx queue number per pool */
1406 uint16_t def_vmdq_idx; /**< Default pool num used for PF */
1407 uint16_t def_pool_q_idx; /**< Default pool queue start reg index */
1409 #define RTE_ETH_DEV_SRIOV(dev) ((dev)->data->sriov)
1411 #define RTE_ETH_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
1413 #define RTE_ETH_DEV_NO_OWNER 0
1415 #define RTE_ETH_MAX_OWNER_NAME_LEN 64
1417 struct rte_eth_dev_owner {
1418 uint64_t id; /**< The owner unique identifier. */
1419 char name[RTE_ETH_MAX_OWNER_NAME_LEN]; /**< The owner name. */
1423 * Port is released (i.e. totally freed and data erased) on close.
1424 * Temporary flag for PMD migration to new rte_eth_dev_close() behaviour.
1426 #define RTE_ETH_DEV_CLOSE_REMOVE 0x0001
1427 /** Device supports link state interrupt */
1428 #define RTE_ETH_DEV_INTR_LSC 0x0002
1429 /** Device is a bonded slave */
1430 #define RTE_ETH_DEV_BONDED_SLAVE 0x0004
1431 /** Device supports device removal interrupt */
1432 #define RTE_ETH_DEV_INTR_RMV 0x0008
1433 /** Device is port representor */
1434 #define RTE_ETH_DEV_REPRESENTOR 0x0010
1435 /** Device does not support MAC change after started */
1436 #define RTE_ETH_DEV_NOLIVE_MAC_ADDR 0x0020
1439 * Iterates over valid ethdev ports owned by a specific owner.
1442 * The id of the next possible valid owned port.
1444 * The owner identifier.
1445 * RTE_ETH_DEV_NO_OWNER means iterate over all valid ownerless ports.
1447 * Next valid port id owned by owner_id, RTE_MAX_ETHPORTS if there is none.
1449 uint64_t rte_eth_find_next_owned_by(uint16_t port_id,
1450 const uint64_t owner_id);
1453 * Macro to iterate over all enabled ethdev ports owned by a specific owner.
1455 #define RTE_ETH_FOREACH_DEV_OWNED_BY(p, o) \
1456 for (p = rte_eth_find_next_owned_by(0, o); \
1457 (unsigned int)p < (unsigned int)RTE_MAX_ETHPORTS; \
1458 p = rte_eth_find_next_owned_by(p + 1, o))
1461 * Iterates over valid ethdev ports.
1464 * The id of the next possible valid port.
1466 * Next valid port id, RTE_MAX_ETHPORTS if there is none.
1468 uint16_t rte_eth_find_next(uint16_t port_id);
1471 * Macro to iterate over all enabled and ownerless ethdev ports.
1473 #define RTE_ETH_FOREACH_DEV(p) \
1474 RTE_ETH_FOREACH_DEV_OWNED_BY(p, RTE_ETH_DEV_NO_OWNER)
1478 * @b EXPERIMENTAL: this API may change without prior notice.
1480 * Iterates over ethdev ports of a specified device.
1482 * @param port_id_start
1483 * The id of the next possible valid port.
1485 * The generic device behind the ports to iterate.
1487 * Next port id of the device, possibly port_id_start,
1488 * RTE_MAX_ETHPORTS if there is none.
1492 rte_eth_find_next_of(uint16_t port_id_start,
1493 const struct rte_device *parent);
1496 * Macro to iterate over all ethdev ports of a specified device.
1499 * The id of the matching port being iterated.
1501 * The rte_device pointer matching the iterated ports.
1503 #define RTE_ETH_FOREACH_DEV_OF(port_id, parent) \
1504 for (port_id = rte_eth_find_next_of(0, parent); \
1505 port_id < RTE_MAX_ETHPORTS; \
1506 port_id = rte_eth_find_next_of(port_id + 1, parent))
1510 * @b EXPERIMENTAL: this API may change without prior notice.
1512 * Iterates over sibling ethdev ports (i.e. sharing the same rte_device).
1514 * @param port_id_start
1515 * The id of the next possible valid sibling port.
1516 * @param ref_port_id
1517 * The id of a reference port to compare rte_device with.
1519 * Next sibling port id, possibly port_id_start or ref_port_id itself,
1520 * RTE_MAX_ETHPORTS if there is none.
1524 rte_eth_find_next_sibling(uint16_t port_id_start,
1525 uint16_t ref_port_id);
1528 * Macro to iterate over all ethdev ports sharing the same rte_device
1529 * as the specified port.
1530 * Note: the specified reference port is part of the loop iterations.
1533 * The id of the matching port being iterated.
1534 * @param ref_port_id
1535 * The id of the port being compared.
1537 #define RTE_ETH_FOREACH_DEV_SIBLING(port_id, ref_port_id) \
1538 for (port_id = rte_eth_find_next_sibling(0, ref_port_id); \
1539 port_id < RTE_MAX_ETHPORTS; \
1540 port_id = rte_eth_find_next_sibling(port_id + 1, ref_port_id))
1544 * @b EXPERIMENTAL: this API may change without prior notice.
1546 * Get a new unique owner identifier.
1547 * An owner identifier is used to owns Ethernet devices by only one DPDK entity
1548 * to avoid multiple management of device by different entities.
1551 * Owner identifier pointer.
1553 * Negative errno value on error, 0 on success.
1556 int rte_eth_dev_owner_new(uint64_t *owner_id);
1560 * @b EXPERIMENTAL: this API may change without prior notice.
1562 * Set an Ethernet device owner.
1565 * The identifier of the port to own.
1567 * The owner pointer.
1569 * Negative errno value on error, 0 on success.
1572 int rte_eth_dev_owner_set(const uint16_t port_id,
1573 const struct rte_eth_dev_owner *owner);
1577 * @b EXPERIMENTAL: this API may change without prior notice.
1579 * Unset Ethernet device owner to make the device ownerless.
1582 * The identifier of port to make ownerless.
1584 * The owner identifier.
1586 * 0 on success, negative errno value on error.
1589 int rte_eth_dev_owner_unset(const uint16_t port_id,
1590 const uint64_t owner_id);
1594 * @b EXPERIMENTAL: this API may change without prior notice.
1596 * Remove owner from all Ethernet devices owned by a specific owner.
1599 * The owner identifier.
1601 * 0 on success, negative errno value on error.
1604 int rte_eth_dev_owner_delete(const uint64_t owner_id);
1608 * @b EXPERIMENTAL: this API may change without prior notice.
1610 * Get the owner of an Ethernet device.
1613 * The port identifier.
1615 * The owner structure pointer to fill.
1617 * 0 on success, negative errno value on error..
1620 int rte_eth_dev_owner_get(const uint16_t port_id,
1621 struct rte_eth_dev_owner *owner);
1624 * Get the total number of Ethernet devices that have been successfully
1625 * initialized by the matching Ethernet driver during the PCI probing phase
1626 * and that are available for applications to use. These devices must be
1627 * accessed by using the ``RTE_ETH_FOREACH_DEV()`` macro to deal with
1628 * non-contiguous ranges of devices.
1629 * These non-contiguous ranges can be created by calls to hotplug functions or
1633 * - The total number of usable Ethernet devices.
1636 uint16_t rte_eth_dev_count(void);
1639 * Get the number of ports which are usable for the application.
1641 * These devices must be iterated by using the macro
1642 * ``RTE_ETH_FOREACH_DEV`` or ``RTE_ETH_FOREACH_DEV_OWNED_BY``
1643 * to deal with non-contiguous ranges of devices.
1646 * The count of available Ethernet devices.
1648 uint16_t rte_eth_dev_count_avail(void);
1651 * Get the total number of ports which are allocated.
1653 * Some devices may not be available for the application.
1656 * The total count of Ethernet devices.
1658 uint16_t rte_eth_dev_count_total(void);
1661 * Convert a numerical speed in Mbps to a bitmap flag that can be used in
1662 * the bitmap link_speeds of the struct rte_eth_conf
1665 * Numerical speed value in Mbps
1667 * ETH_LINK_[HALF/FULL]_DUPLEX (only for 10/100M speeds)
1669 * 0 if the speed cannot be mapped
1671 uint32_t rte_eth_speed_bitflag(uint32_t speed, int duplex);
1674 * Get DEV_RX_OFFLOAD_* flag name.
1679 * Offload name or 'UNKNOWN' if the flag cannot be recognised.
1681 const char *rte_eth_dev_rx_offload_name(uint64_t offload);
1684 * Get DEV_TX_OFFLOAD_* flag name.
1689 * Offload name or 'UNKNOWN' if the flag cannot be recognised.
1691 const char *rte_eth_dev_tx_offload_name(uint64_t offload);
1694 * Configure an Ethernet device.
1695 * This function must be invoked first before any other function in the
1696 * Ethernet API. This function can also be re-invoked when a device is in the
1700 * The port identifier of the Ethernet device to configure.
1701 * @param nb_rx_queue
1702 * The number of receive queues to set up for the Ethernet device.
1703 * @param nb_tx_queue
1704 * The number of transmit queues to set up for the Ethernet device.
1706 * The pointer to the configuration data to be used for the Ethernet device.
1707 * The *rte_eth_conf* structure includes:
1708 * - the hardware offload features to activate, with dedicated fields for
1709 * each statically configurable offload hardware feature provided by
1710 * Ethernet devices, such as IP checksum or VLAN tag stripping for
1712 * The Rx offload bitfield API is obsolete and will be deprecated.
1713 * Applications should set the ignore_bitfield_offloads bit on *rxmode*
1714 * structure and use offloads field to set per-port offloads instead.
1715 * - Any offloading set in eth_conf->[rt]xmode.offloads must be within
1716 * the [rt]x_offload_capa returned from rte_eth_dev_info_get().
1717 * Any type of device supported offloading set in the input argument
1718 * eth_conf->[rt]xmode.offloads to rte_eth_dev_configure() is enabled
1719 * on all queues and it can't be disabled in rte_eth_[rt]x_queue_setup()
1720 * - the Receive Side Scaling (RSS) configuration when using multiple RX
1721 * queues per port. Any RSS hash function set in eth_conf->rss_conf.rss_hf
1722 * must be within the flow_type_rss_offloads provided by drivers via
1723 * rte_eth_dev_info_get() API.
1725 * Embedding all configuration information in a single data structure
1726 * is the more flexible method that allows the addition of new features
1727 * without changing the syntax of the API.
1729 * - 0: Success, device configured.
1730 * - <0: Error code returned by the driver configuration function.
1732 int rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_queue,
1733 uint16_t nb_tx_queue, const struct rte_eth_conf *eth_conf);
1737 * @b EXPERIMENTAL: this API may change without prior notice.
1739 * Check if an Ethernet device was physically removed.
1742 * The port identifier of the Ethernet device.
1744 * 1 when the Ethernet device is removed, otherwise 0.
1748 rte_eth_dev_is_removed(uint16_t port_id);
1751 * Allocate and set up a receive queue for an Ethernet device.
1753 * The function allocates a contiguous block of memory for *nb_rx_desc*
1754 * receive descriptors from a memory zone associated with *socket_id*
1755 * and initializes each receive descriptor with a network buffer allocated
1756 * from the memory pool *mb_pool*.
1759 * The port identifier of the Ethernet device.
1760 * @param rx_queue_id
1761 * The index of the receive queue to set up.
1762 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1763 * to rte_eth_dev_configure().
1765 * The number of receive descriptors to allocate for the receive ring.
1767 * The *socket_id* argument is the socket identifier in case of NUMA.
1768 * The value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1769 * the DMA memory allocated for the receive descriptors of the ring.
1771 * The pointer to the configuration data to be used for the receive queue.
1772 * NULL value is allowed, in which case default RX configuration
1774 * The *rx_conf* structure contains an *rx_thresh* structure with the values
1775 * of the Prefetch, Host, and Write-Back threshold registers of the receive
1777 * In addition it contains the hardware offloads features to activate using
1778 * the DEV_RX_OFFLOAD_* flags.
1779 * If an offloading set in rx_conf->offloads
1780 * hasn't been set in the input argument eth_conf->rxmode.offloads
1781 * to rte_eth_dev_configure(), it is a new added offloading, it must be
1782 * per-queue type and it is enabled for the queue.
1783 * No need to repeat any bit in rx_conf->offloads which has already been
1784 * enabled in rte_eth_dev_configure() at port level. An offloading enabled
1785 * at port level can't be disabled at queue level.
1787 * The pointer to the memory pool from which to allocate *rte_mbuf* network
1788 * memory buffers to populate each descriptor of the receive ring.
1790 * - 0: Success, receive queue correctly set up.
1791 * - -EIO: if device is removed.
1792 * - -EINVAL: The memory pool pointer is null or the size of network buffers
1793 * which can be allocated from this memory pool does not fit the various
1794 * buffer sizes allowed by the device controller.
1795 * - -ENOMEM: Unable to allocate the receive ring descriptors or to
1796 * allocate network memory buffers from the memory pool when
1797 * initializing receive descriptors.
1799 int rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
1800 uint16_t nb_rx_desc, unsigned int socket_id,
1801 const struct rte_eth_rxconf *rx_conf,
1802 struct rte_mempool *mb_pool);
1805 * Allocate and set up a transmit queue for an Ethernet device.
1808 * The port identifier of the Ethernet device.
1809 * @param tx_queue_id
1810 * The index of the transmit queue to set up.
1811 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1812 * to rte_eth_dev_configure().
1814 * The number of transmit descriptors to allocate for the transmit ring.
1816 * The *socket_id* argument is the socket identifier in case of NUMA.
1817 * Its value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1818 * the DMA memory allocated for the transmit descriptors of the ring.
1820 * The pointer to the configuration data to be used for the transmit queue.
1821 * NULL value is allowed, in which case default TX configuration
1823 * The *tx_conf* structure contains the following data:
1824 * - The *tx_thresh* structure with the values of the Prefetch, Host, and
1825 * Write-Back threshold registers of the transmit ring.
1826 * When setting Write-Back threshold to the value greater then zero,
1827 * *tx_rs_thresh* value should be explicitly set to one.
1828 * - The *tx_free_thresh* value indicates the [minimum] number of network
1829 * buffers that must be pending in the transmit ring to trigger their
1830 * [implicit] freeing by the driver transmit function.
1831 * - The *tx_rs_thresh* value indicates the [minimum] number of transmit
1832 * descriptors that must be pending in the transmit ring before setting the
1833 * RS bit on a descriptor by the driver transmit function.
1834 * The *tx_rs_thresh* value should be less or equal then
1835 * *tx_free_thresh* value, and both of them should be less then
1837 * - The *offloads* member contains Tx offloads to be enabled.
1838 * If an offloading set in tx_conf->offloads
1839 * hasn't been set in the input argument eth_conf->txmode.offloads
1840 * to rte_eth_dev_configure(), it is a new added offloading, it must be
1841 * per-queue type and it is enabled for the queue.
1842 * No need to repeat any bit in tx_conf->offloads which has already been
1843 * enabled in rte_eth_dev_configure() at port level. An offloading enabled
1844 * at port level can't be disabled at queue level.
1846 * Note that setting *tx_free_thresh* or *tx_rs_thresh* value to 0 forces
1847 * the transmit function to use default values.
1849 * - 0: Success, the transmit queue is correctly set up.
1850 * - -ENOMEM: Unable to allocate the transmit ring descriptors.
1852 int rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id,
1853 uint16_t nb_tx_desc, unsigned int socket_id,
1854 const struct rte_eth_txconf *tx_conf);
1857 * Return the NUMA socket to which an Ethernet device is connected
1860 * The port identifier of the Ethernet device
1862 * The NUMA socket id to which the Ethernet device is connected or
1863 * a default of zero if the socket could not be determined.
1864 * -1 is returned is the port_id value is out of range.
1866 int rte_eth_dev_socket_id(uint16_t port_id);
1869 * Check if port_id of device is attached
1872 * The port identifier of the Ethernet device
1874 * - 0 if port is out of range or not attached
1875 * - 1 if device is attached
1877 int rte_eth_dev_is_valid_port(uint16_t port_id);
1880 * Start specified RX queue of a port. It is used when rx_deferred_start
1881 * flag of the specified queue is true.
1884 * The port identifier of the Ethernet device
1885 * @param rx_queue_id
1886 * The index of the rx queue to update the ring.
1887 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1888 * to rte_eth_dev_configure().
1890 * - 0: Success, the receive queue is started.
1891 * - -EINVAL: The port_id or the queue_id out of range.
1892 * - -EIO: if device is removed.
1893 * - -ENOTSUP: The function not supported in PMD driver.
1895 int rte_eth_dev_rx_queue_start(uint16_t port_id, uint16_t rx_queue_id);
1898 * Stop specified RX queue of a port
1901 * The port identifier of the Ethernet device
1902 * @param rx_queue_id
1903 * The index of the rx queue to update the ring.
1904 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1905 * to rte_eth_dev_configure().
1907 * - 0: Success, the receive queue is stopped.
1908 * - -EINVAL: The port_id or the queue_id out of range.
1909 * - -EIO: if device is removed.
1910 * - -ENOTSUP: The function not supported in PMD driver.
1912 int rte_eth_dev_rx_queue_stop(uint16_t port_id, uint16_t rx_queue_id);
1915 * Start TX for specified queue of a port. It is used when tx_deferred_start
1916 * flag of the specified queue is true.
1919 * The port identifier of the Ethernet device
1920 * @param tx_queue_id
1921 * The index of the tx queue to update the ring.
1922 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1923 * to rte_eth_dev_configure().
1925 * - 0: Success, the transmit queue is started.
1926 * - -EINVAL: The port_id or the queue_id out of range.
1927 * - -EIO: if device is removed.
1928 * - -ENOTSUP: The function not supported in PMD driver.
1930 int rte_eth_dev_tx_queue_start(uint16_t port_id, uint16_t tx_queue_id);
1933 * Stop specified TX queue of a port
1936 * The port identifier of the Ethernet device
1937 * @param tx_queue_id
1938 * The index of the tx queue to update the ring.
1939 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1940 * to rte_eth_dev_configure().
1942 * - 0: Success, the transmit queue is stopped.
1943 * - -EINVAL: The port_id or the queue_id out of range.
1944 * - -EIO: if device is removed.
1945 * - -ENOTSUP: The function not supported in PMD driver.
1947 int rte_eth_dev_tx_queue_stop(uint16_t port_id, uint16_t tx_queue_id);
1950 * Start an Ethernet device.
1952 * The device start step is the last one and consists of setting the configured
1953 * offload features and in starting the transmit and the receive units of the
1956 * Device RTE_ETH_DEV_NOLIVE_MAC_ADDR flag causes MAC address to be set before
1957 * PMD port start callback function is invoked.
1959 * On success, all basic functions exported by the Ethernet API (link status,
1960 * receive/transmit, and so on) can be invoked.
1963 * The port identifier of the Ethernet device.
1965 * - 0: Success, Ethernet device started.
1966 * - <0: Error code of the driver device start function.
1968 int rte_eth_dev_start(uint16_t port_id);
1971 * Stop an Ethernet device. The device can be restarted with a call to
1972 * rte_eth_dev_start()
1975 * The port identifier of the Ethernet device.
1977 void rte_eth_dev_stop(uint16_t port_id);
1980 * Link up an Ethernet device.
1982 * Set device link up will re-enable the device rx/tx
1983 * functionality after it is previously set device linked down.
1986 * The port identifier of the Ethernet device.
1988 * - 0: Success, Ethernet device linked up.
1989 * - <0: Error code of the driver device link up function.
1991 int rte_eth_dev_set_link_up(uint16_t port_id);
1994 * Link down an Ethernet device.
1995 * The device rx/tx functionality will be disabled if success,
1996 * and it can be re-enabled with a call to
1997 * rte_eth_dev_set_link_up()
2000 * The port identifier of the Ethernet device.
2002 int rte_eth_dev_set_link_down(uint16_t port_id);
2005 * Close a stopped Ethernet device. The device cannot be restarted!
2006 * The function frees all port resources if the driver supports
2007 * the flag RTE_ETH_DEV_CLOSE_REMOVE.
2010 * The port identifier of the Ethernet device.
2012 void rte_eth_dev_close(uint16_t port_id);
2015 * Reset a Ethernet device and keep its port id.
2017 * When a port has to be reset passively, the DPDK application can invoke
2018 * this function. For example when a PF is reset, all its VFs should also
2019 * be reset. Normally a DPDK application can invoke this function when
2020 * RTE_ETH_EVENT_INTR_RESET event is detected, but can also use it to start
2021 * a port reset in other circumstances.
2023 * When this function is called, it first stops the port and then calls the
2024 * PMD specific dev_uninit( ) and dev_init( ) to return the port to initial
2025 * state, in which no Tx and Rx queues are setup, as if the port has been
2026 * reset and not started. The port keeps the port id it had before the
2029 * After calling rte_eth_dev_reset( ), the application should use
2030 * rte_eth_dev_configure( ), rte_eth_rx_queue_setup( ),
2031 * rte_eth_tx_queue_setup( ), and rte_eth_dev_start( )
2032 * to reconfigure the device as appropriate.
2034 * Note: To avoid unexpected behavior, the application should stop calling
2035 * Tx and Rx functions before calling rte_eth_dev_reset( ). For thread
2036 * safety, all these controlling functions should be called from the same
2040 * The port identifier of the Ethernet device.
2043 * - (0) if successful.
2044 * - (-EINVAL) if port identifier is invalid.
2045 * - (-ENOTSUP) if hardware doesn't support this function.
2046 * - (-EPERM) if not ran from the primary process.
2047 * - (-EIO) if re-initialisation failed or device is removed.
2048 * - (-ENOMEM) if the reset failed due to OOM.
2049 * - (-EAGAIN) if the reset temporarily failed and should be retried later.
2051 int rte_eth_dev_reset(uint16_t port_id);
2054 * Enable receipt in promiscuous mode for an Ethernet device.
2057 * The port identifier of the Ethernet device.
2059 * - (0) if successful.
2060 * - (-ENOTSUP) if support for promiscuous_enable() does not exist
2062 * - (-ENODEV) if *port_id* invalid.
2064 int rte_eth_promiscuous_enable(uint16_t port_id);
2067 * Disable receipt in promiscuous mode for an Ethernet device.
2070 * The port identifier of the Ethernet device.
2072 * - (0) if successful.
2073 * - (-ENOTSUP) if support for promiscuous_disable() does not exist
2075 * - (-ENODEV) if *port_id* invalid.
2077 int rte_eth_promiscuous_disable(uint16_t port_id);
2080 * Return the value of promiscuous mode for an Ethernet device.
2083 * The port identifier of the Ethernet device.
2085 * - (1) if promiscuous is enabled
2086 * - (0) if promiscuous is disabled.
2089 int rte_eth_promiscuous_get(uint16_t port_id);
2092 * Enable the receipt of any multicast frame by an Ethernet device.
2095 * The port identifier of the Ethernet device.
2097 * - (0) if successful.
2098 * - (-ENOTSUP) if support for allmulticast_enable() does not exist
2100 * - (-ENODEV) if *port_id* invalid.
2102 int rte_eth_allmulticast_enable(uint16_t port_id);
2105 * Disable the receipt of all multicast frames by an Ethernet device.
2108 * The port identifier of the Ethernet device.
2110 * - (0) if successful.
2111 * - (-ENOTSUP) if support for allmulticast_disable() does not exist
2113 * - (-ENODEV) if *port_id* invalid.
2115 int rte_eth_allmulticast_disable(uint16_t port_id);
2118 * Return the value of allmulticast mode for an Ethernet device.
2121 * The port identifier of the Ethernet device.
2123 * - (1) if allmulticast is enabled
2124 * - (0) if allmulticast is disabled.
2127 int rte_eth_allmulticast_get(uint16_t port_id);
2130 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
2131 * or FULL-DUPLEX) of the physical link of an Ethernet device. It might need
2132 * to wait up to 9 seconds in it.
2135 * The port identifier of the Ethernet device.
2137 * A pointer to an *rte_eth_link* structure to be filled with
2138 * the status, the speed and the mode of the Ethernet device link.
2140 * - (0) if successful.
2141 * - (-ENOTSUP) if the function is not supported in PMD driver.
2142 * - (-ENODEV) if *port_id* invalid.
2144 int rte_eth_link_get(uint16_t port_id, struct rte_eth_link *link);
2147 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
2148 * or FULL-DUPLEX) of the physical link of an Ethernet device. It is a no-wait
2149 * version of rte_eth_link_get().
2152 * The port identifier of the Ethernet device.
2154 * A pointer to an *rte_eth_link* structure to be filled with
2155 * the status, the speed and the mode of the Ethernet device link.
2157 * - (0) if successful.
2158 * - (-ENOTSUP) if the function is not supported in PMD driver.
2159 * - (-ENODEV) if *port_id* invalid.
2161 int rte_eth_link_get_nowait(uint16_t port_id, struct rte_eth_link *link);
2164 * Retrieve the general I/O statistics of an Ethernet device.
2167 * The port identifier of the Ethernet device.
2169 * A pointer to a structure of type *rte_eth_stats* to be filled with
2170 * the values of device counters for the following set of statistics:
2171 * - *ipackets* with the total of successfully received packets.
2172 * - *opackets* with the total of successfully transmitted packets.
2173 * - *ibytes* with the total of successfully received bytes.
2174 * - *obytes* with the total of successfully transmitted bytes.
2175 * - *ierrors* with the total of erroneous received packets.
2176 * - *oerrors* with the total of failed transmitted packets.
2178 * Zero if successful. Non-zero otherwise.
2180 int rte_eth_stats_get(uint16_t port_id, struct rte_eth_stats *stats);
2183 * Reset the general I/O statistics of an Ethernet device.
2186 * The port identifier of the Ethernet device.
2188 * - (0) if device notified to reset stats.
2189 * - (-ENOTSUP) if hardware doesn't support.
2190 * - (-ENODEV) if *port_id* invalid.
2191 * - (<0): Error code of the driver stats reset function.
2193 int rte_eth_stats_reset(uint16_t port_id);
2196 * Retrieve names of extended statistics of an Ethernet device.
2198 * There is an assumption that 'xstat_names' and 'xstats' arrays are matched
2200 * xstats_names[i].name => xstats[i].value
2202 * And the array index is same with id field of 'struct rte_eth_xstat':
2205 * This assumption makes key-value pair matching less flexible but simpler.
2208 * The port identifier of the Ethernet device.
2209 * @param xstats_names
2210 * An rte_eth_xstat_name array of at least *size* elements to
2211 * be filled. If set to NULL, the function returns the required number
2214 * The size of the xstats_names array (number of elements).
2216 * - A positive value lower or equal to size: success. The return value
2217 * is the number of entries filled in the stats table.
2218 * - A positive value higher than size: error, the given statistics table
2219 * is too small. The return value corresponds to the size that should
2220 * be given to succeed. The entries in the table are not valid and
2221 * shall not be used by the caller.
2222 * - A negative value on error (invalid port id).
2224 int rte_eth_xstats_get_names(uint16_t port_id,
2225 struct rte_eth_xstat_name *xstats_names,
2229 * Retrieve extended statistics of an Ethernet device.
2231 * There is an assumption that 'xstat_names' and 'xstats' arrays are matched
2233 * xstats_names[i].name => xstats[i].value
2235 * And the array index is same with id field of 'struct rte_eth_xstat':
2238 * This assumption makes key-value pair matching less flexible but simpler.
2241 * The port identifier of the Ethernet device.
2243 * A pointer to a table of structure of type *rte_eth_xstat*
2244 * to be filled with device statistics ids and values.
2245 * This parameter can be set to NULL if n is 0.
2247 * The size of the xstats array (number of elements).
2249 * - A positive value lower or equal to n: success. The return value
2250 * is the number of entries filled in the stats table.
2251 * - A positive value higher than n: error, the given statistics table
2252 * is too small. The return value corresponds to the size that should
2253 * be given to succeed. The entries in the table are not valid and
2254 * shall not be used by the caller.
2255 * - A negative value on error (invalid port id).
2257 int rte_eth_xstats_get(uint16_t port_id, struct rte_eth_xstat *xstats,
2261 * Retrieve names of extended statistics of an Ethernet device.
2264 * The port identifier of the Ethernet device.
2265 * @param xstats_names
2266 * An rte_eth_xstat_name array of at least *size* elements to
2267 * be filled. If set to NULL, the function returns the required number
2270 * IDs array given by app to retrieve specific statistics
2272 * The size of the xstats_names array (number of elements).
2274 * - A positive value lower or equal to size: success. The return value
2275 * is the number of entries filled in the stats table.
2276 * - A positive value higher than size: error, the given statistics table
2277 * is too small. The return value corresponds to the size that should
2278 * be given to succeed. The entries in the table are not valid and
2279 * shall not be used by the caller.
2280 * - A negative value on error (invalid port id).
2283 rte_eth_xstats_get_names_by_id(uint16_t port_id,
2284 struct rte_eth_xstat_name *xstats_names, unsigned int size,
2288 * Retrieve extended statistics of an Ethernet device.
2291 * The port identifier of the Ethernet device.
2293 * A pointer to an ids array passed by application. This tells which
2294 * statistics values function should retrieve. This parameter
2295 * can be set to NULL if size is 0. In this case function will retrieve
2296 * all available statistics.
2298 * A pointer to a table to be filled with device statistics values.
2300 * The size of the ids array (number of elements).
2302 * - A positive value lower or equal to size: success. The return value
2303 * is the number of entries filled in the stats table.
2304 * - A positive value higher than size: error, the given statistics table
2305 * is too small. The return value corresponds to the size that should
2306 * be given to succeed. The entries in the table are not valid and
2307 * shall not be used by the caller.
2308 * - A negative value on error (invalid port id).
2310 int rte_eth_xstats_get_by_id(uint16_t port_id, const uint64_t *ids,
2311 uint64_t *values, unsigned int size);
2314 * Gets the ID of a statistic from its name.
2316 * This function searches for the statistics using string compares, and
2317 * as such should not be used on the fast-path. For fast-path retrieval of
2318 * specific statistics, store the ID as provided in *id* from this function,
2319 * and pass the ID to rte_eth_xstats_get()
2321 * @param port_id The port to look up statistics from
2322 * @param xstat_name The name of the statistic to return
2323 * @param[out] id A pointer to an app-supplied uint64_t which should be
2324 * set to the ID of the stat if the stat exists.
2327 * -ENODEV for invalid port_id,
2328 * -EIO if device is removed,
2329 * -EINVAL if the xstat_name doesn't exist in port_id
2331 int rte_eth_xstats_get_id_by_name(uint16_t port_id, const char *xstat_name,
2335 * Reset extended statistics of an Ethernet device.
2338 * The port identifier of the Ethernet device.
2340 * - (0) if device notified to reset extended stats.
2341 * - (-ENOTSUP) if pmd doesn't support both
2342 * extended stats and basic stats reset.
2343 * - (-ENODEV) if *port_id* invalid.
2344 * - (<0): Error code of the driver xstats reset function.
2346 int rte_eth_xstats_reset(uint16_t port_id);
2349 * Set a mapping for the specified transmit queue to the specified per-queue
2350 * statistics counter.
2353 * The port identifier of the Ethernet device.
2354 * @param tx_queue_id
2355 * The index of the transmit queue for which a queue stats mapping is required.
2356 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
2357 * to rte_eth_dev_configure().
2359 * The per-queue packet statistics functionality number that the transmit
2360 * queue is to be assigned.
2361 * The value must be in the range [0, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1].
2363 * Zero if successful. Non-zero otherwise.
2365 int rte_eth_dev_set_tx_queue_stats_mapping(uint16_t port_id,
2366 uint16_t tx_queue_id, uint8_t stat_idx);
2369 * Set a mapping for the specified receive queue to the specified per-queue
2370 * statistics counter.
2373 * The port identifier of the Ethernet device.
2374 * @param rx_queue_id
2375 * The index of the receive queue for which a queue stats mapping is required.
2376 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2377 * to rte_eth_dev_configure().
2379 * The per-queue packet statistics functionality number that the receive
2380 * queue is to be assigned.
2381 * The value must be in the range [0, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1].
2383 * Zero if successful. Non-zero otherwise.
2385 int rte_eth_dev_set_rx_queue_stats_mapping(uint16_t port_id,
2386 uint16_t rx_queue_id,
2390 * Retrieve the Ethernet address of an Ethernet device.
2393 * The port identifier of the Ethernet device.
2395 * A pointer to a structure of type *ether_addr* to be filled with
2396 * the Ethernet address of the Ethernet device.
2398 * - (0) if successful
2399 * - (-ENODEV) if *port_id* invalid.
2401 int rte_eth_macaddr_get(uint16_t port_id, struct rte_ether_addr *mac_addr);
2404 * Retrieve the contextual information of an Ethernet device.
2406 * As part of this function, a number of of fields in dev_info will be
2407 * initialized as follows:
2412 * Where lim is defined within the rte_eth_dev_info_get as
2414 * const struct rte_eth_desc_lim lim = {
2415 * .nb_max = UINT16_MAX,
2418 * .nb_seg_max = UINT16_MAX,
2419 * .nb_mtu_seg_max = UINT16_MAX,
2422 * device = dev->device
2423 * min_mtu = RTE_ETHER_MIN_MTU
2424 * max_mtu = UINT16_MAX
2426 * The following fields will be populated if support for dev_infos_get()
2427 * exists for the device and the rte_eth_dev 'dev' has been populated
2428 * successfully with a call to it:
2430 * driver_name = dev->device->driver->name
2431 * nb_rx_queues = dev->data->nb_rx_queues
2432 * nb_tx_queues = dev->data->nb_tx_queues
2433 * dev_flags = &dev->data->dev_flags
2436 * The port identifier of the Ethernet device.
2438 * A pointer to a structure of type *rte_eth_dev_info* to be filled with
2439 * the contextual information of the Ethernet device.
2441 * - (0) if successful.
2442 * - (-ENOTSUP) if support for dev_infos_get() does not exist for the device.
2443 * - (-ENODEV) if *port_id* invalid.
2445 int rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info);
2448 * Retrieve the firmware version of a device.
2451 * The port identifier of the device.
2453 * A pointer to a string array storing the firmware version of a device,
2454 * the string includes terminating null. This pointer is allocated by caller.
2456 * The size of the string array pointed by fw_version, which should be
2457 * large enough to store firmware version of the device.
2459 * - (0) if successful.
2460 * - (-ENOTSUP) if operation is not supported.
2461 * - (-ENODEV) if *port_id* invalid.
2462 * - (-EIO) if device is removed.
2463 * - (>0) if *fw_size* is not enough to store firmware version, return
2464 * the size of the non truncated string.
2466 int rte_eth_dev_fw_version_get(uint16_t port_id,
2467 char *fw_version, size_t fw_size);
2470 * Retrieve the supported packet types of an Ethernet device.
2472 * When a packet type is announced as supported, it *must* be recognized by
2473 * the PMD. For instance, if RTE_PTYPE_L2_ETHER, RTE_PTYPE_L2_ETHER_VLAN
2474 * and RTE_PTYPE_L3_IPV4 are announced, the PMD must return the following
2475 * packet types for these packets:
2476 * - Ether/IPv4 -> RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4
2477 * - Ether/Vlan/IPv4 -> RTE_PTYPE_L2_ETHER_VLAN | RTE_PTYPE_L3_IPV4
2478 * - Ether/[anything else] -> RTE_PTYPE_L2_ETHER
2479 * - Ether/Vlan/[anything else] -> RTE_PTYPE_L2_ETHER_VLAN
2481 * When a packet is received by a PMD, the most precise type must be
2482 * returned among the ones supported. However a PMD is allowed to set
2483 * packet type that is not in the supported list, at the condition that it
2484 * is more precise. Therefore, a PMD announcing no supported packet types
2485 * can still set a matching packet type in a received packet.
2488 * Better to invoke this API after the device is already started or rx burst
2489 * function is decided, to obtain correct supported ptypes.
2491 * if a given PMD does not report what ptypes it supports, then the supported
2492 * ptype count is reported as 0.
2494 * The port identifier of the Ethernet device.
2496 * A hint of what kind of packet type which the caller is interested in.
2498 * An array pointer to store adequate packet types, allocated by caller.
2500 * Size of the array pointed by param ptypes.
2502 * - (>=0) Number of supported ptypes. If the number of types exceeds num,
2503 * only num entries will be filled into the ptypes array, but the full
2504 * count of supported ptypes will be returned.
2505 * - (-ENODEV) if *port_id* invalid.
2507 int rte_eth_dev_get_supported_ptypes(uint16_t port_id, uint32_t ptype_mask,
2508 uint32_t *ptypes, int num);
2511 * Retrieve the MTU of an Ethernet device.
2514 * The port identifier of the Ethernet device.
2516 * A pointer to a uint16_t where the retrieved MTU is to be stored.
2518 * - (0) if successful.
2519 * - (-ENODEV) if *port_id* invalid.
2521 int rte_eth_dev_get_mtu(uint16_t port_id, uint16_t *mtu);
2524 * Change the MTU of an Ethernet device.
2527 * The port identifier of the Ethernet device.
2529 * A uint16_t for the MTU to be applied.
2531 * - (0) if successful.
2532 * - (-ENOTSUP) if operation is not supported.
2533 * - (-ENODEV) if *port_id* invalid.
2534 * - (-EIO) if device is removed.
2535 * - (-EINVAL) if *mtu* invalid, validation of mtu can occur within
2536 * rte_eth_dev_set_mtu if dev_infos_get is supported by the device or
2537 * when the mtu is set using dev->dev_ops->mtu_set.
2538 * - (-EBUSY) if operation is not allowed when the port is running
2540 int rte_eth_dev_set_mtu(uint16_t port_id, uint16_t mtu);
2543 * Enable/Disable hardware filtering by an Ethernet device of received
2544 * VLAN packets tagged with a given VLAN Tag Identifier.
2547 * The port identifier of the Ethernet device.
2549 * The VLAN Tag Identifier whose filtering must be enabled or disabled.
2551 * If > 0, enable VLAN filtering of VLAN packets tagged with *vlan_id*.
2552 * Otherwise, disable VLAN filtering of VLAN packets tagged with *vlan_id*.
2554 * - (0) if successful.
2555 * - (-ENOTSUP) if hardware-assisted VLAN filtering not configured.
2556 * - (-ENODEV) if *port_id* invalid.
2557 * - (-EIO) if device is removed.
2558 * - (-ENOSYS) if VLAN filtering on *port_id* disabled.
2559 * - (-EINVAL) if *vlan_id* > 4095.
2561 int rte_eth_dev_vlan_filter(uint16_t port_id, uint16_t vlan_id, int on);
2564 * Enable/Disable hardware VLAN Strip by a rx queue of an Ethernet device.
2565 * 82599/X540/X550 can support VLAN stripping at the rx queue level
2568 * The port identifier of the Ethernet device.
2569 * @param rx_queue_id
2570 * The index of the receive queue for which a queue stats mapping is required.
2571 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2572 * to rte_eth_dev_configure().
2574 * If 1, Enable VLAN Stripping of the receive queue of the Ethernet port.
2575 * If 0, Disable VLAN Stripping of the receive queue of the Ethernet port.
2577 * - (0) if successful.
2578 * - (-ENOTSUP) if hardware-assisted VLAN stripping not configured.
2579 * - (-ENODEV) if *port_id* invalid.
2580 * - (-EINVAL) if *rx_queue_id* invalid.
2582 int rte_eth_dev_set_vlan_strip_on_queue(uint16_t port_id, uint16_t rx_queue_id,
2586 * Set the Outer VLAN Ether Type by an Ethernet device, it can be inserted to
2587 * the VLAN Header. This is a register setup available on some Intel NIC, not
2588 * but all, please check the data sheet for availability.
2591 * The port identifier of the Ethernet device.
2595 * The Tag Protocol ID
2597 * - (0) if successful.
2598 * - (-ENOTSUP) if hardware-assisted VLAN TPID setup is not supported.
2599 * - (-ENODEV) if *port_id* invalid.
2600 * - (-EIO) if device is removed.
2602 int rte_eth_dev_set_vlan_ether_type(uint16_t port_id,
2603 enum rte_vlan_type vlan_type,
2607 * Set VLAN offload configuration on an Ethernet device
2608 * Enable/Disable Extended VLAN by an Ethernet device, This is a register setup
2609 * available on some Intel NIC, not but all, please check the data sheet for
2611 * Enable/Disable VLAN Strip can be done on rx queue for certain NIC, but here
2612 * the configuration is applied on the port level.
2615 * The port identifier of the Ethernet device.
2616 * @param offload_mask
2617 * The VLAN Offload bit mask can be mixed use with "OR"
2618 * ETH_VLAN_STRIP_OFFLOAD
2619 * ETH_VLAN_FILTER_OFFLOAD
2620 * ETH_VLAN_EXTEND_OFFLOAD
2621 * ETH_QINQ_STRIP_OFFLOAD
2623 * - (0) if successful.
2624 * - (-ENOTSUP) if hardware-assisted VLAN filtering not configured.
2625 * - (-ENODEV) if *port_id* invalid.
2626 * - (-EIO) if device is removed.
2628 int rte_eth_dev_set_vlan_offload(uint16_t port_id, int offload_mask);
2631 * Read VLAN Offload configuration from an Ethernet device
2634 * The port identifier of the Ethernet device.
2636 * - (>0) if successful. Bit mask to indicate
2637 * ETH_VLAN_STRIP_OFFLOAD
2638 * ETH_VLAN_FILTER_OFFLOAD
2639 * ETH_VLAN_EXTEND_OFFLOAD
2640 * ETH_QINQ_STRIP_OFFLOAD
2641 * - (-ENODEV) if *port_id* invalid.
2643 int rte_eth_dev_get_vlan_offload(uint16_t port_id);
2646 * Set port based TX VLAN insertion on or off.
2649 * The port identifier of the Ethernet device.
2651 * Port based TX VLAN identifier together with user priority.
2653 * Turn on or off the port based TX VLAN insertion.
2656 * - (0) if successful.
2657 * - negative if failed.
2659 int rte_eth_dev_set_vlan_pvid(uint16_t port_id, uint16_t pvid, int on);
2661 typedef void (*buffer_tx_error_fn)(struct rte_mbuf **unsent, uint16_t count,
2665 * Structure used to buffer packets for future TX
2666 * Used by APIs rte_eth_tx_buffer and rte_eth_tx_buffer_flush
2668 struct rte_eth_dev_tx_buffer {
2669 buffer_tx_error_fn error_callback;
2670 void *error_userdata;
2671 uint16_t size; /**< Size of buffer for buffered tx */
2672 uint16_t length; /**< Number of packets in the array */
2673 struct rte_mbuf *pkts[];
2674 /**< Pending packets to be sent on explicit flush or when full */
2678 * Calculate the size of the tx buffer.
2681 * Number of stored packets.
2683 #define RTE_ETH_TX_BUFFER_SIZE(sz) \
2684 (sizeof(struct rte_eth_dev_tx_buffer) + (sz) * sizeof(struct rte_mbuf *))
2687 * Initialize default values for buffered transmitting
2690 * Tx buffer to be initialized.
2697 rte_eth_tx_buffer_init(struct rte_eth_dev_tx_buffer *buffer, uint16_t size);
2700 * Configure a callback for buffered packets which cannot be sent
2702 * Register a specific callback to be called when an attempt is made to send
2703 * all packets buffered on an ethernet port, but not all packets can
2704 * successfully be sent. The callback registered here will be called only
2705 * from calls to rte_eth_tx_buffer() and rte_eth_tx_buffer_flush() APIs.
2706 * The default callback configured for each queue by default just frees the
2707 * packets back to the calling mempool. If additional behaviour is required,
2708 * for example, to count dropped packets, or to retry transmission of packets
2709 * which cannot be sent, this function should be used to register a suitable
2710 * callback function to implement the desired behaviour.
2711 * The example callback "rte_eth_count_unsent_packet_callback()" is also
2712 * provided as reference.
2715 * The port identifier of the Ethernet device.
2717 * The function to be used as the callback.
2719 * Arbitrary parameter to be passed to the callback function
2721 * 0 on success, or -1 on error with rte_errno set appropriately
2724 rte_eth_tx_buffer_set_err_callback(struct rte_eth_dev_tx_buffer *buffer,
2725 buffer_tx_error_fn callback, void *userdata);
2728 * Callback function for silently dropping unsent buffered packets.
2730 * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
2731 * adjust the default behavior when buffered packets cannot be sent. This
2732 * function drops any unsent packets silently and is used by tx buffered
2733 * operations as default behavior.
2735 * NOTE: this function should not be called directly, instead it should be used
2736 * as a callback for packet buffering.
2738 * NOTE: when configuring this function as a callback with
2739 * rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
2740 * should point to an uint64_t value.
2743 * The previously buffered packets which could not be sent
2745 * The number of unsent packets in the pkts array
2750 rte_eth_tx_buffer_drop_callback(struct rte_mbuf **pkts, uint16_t unsent,
2754 * Callback function for tracking unsent buffered packets.
2756 * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
2757 * adjust the default behavior when buffered packets cannot be sent. This
2758 * function drops any unsent packets, but also updates a user-supplied counter
2759 * to track the overall number of packets dropped. The counter should be an
2760 * uint64_t variable.
2762 * NOTE: this function should not be called directly, instead it should be used
2763 * as a callback for packet buffering.
2765 * NOTE: when configuring this function as a callback with
2766 * rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
2767 * should point to an uint64_t value.
2770 * The previously buffered packets which could not be sent
2772 * The number of unsent packets in the pkts array
2774 * Pointer to an uint64_t value, which will be incremented by unsent
2777 rte_eth_tx_buffer_count_callback(struct rte_mbuf **pkts, uint16_t unsent,
2781 * Request the driver to free mbufs currently cached by the driver. The
2782 * driver will only free the mbuf if it is no longer in use. It is the
2783 * application's responsibility to ensure rte_eth_tx_buffer_flush(..) is
2787 * The port identifier of the Ethernet device.
2789 * The index of the transmit queue through which output packets must be
2791 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
2792 * to rte_eth_dev_configure().
2794 * Maximum number of packets to free. Use 0 to indicate all possible packets
2795 * should be freed. Note that a packet may be using multiple mbufs.
2798 * -ENODEV: Invalid interface
2799 * -EIO: device is removed
2800 * -ENOTSUP: Driver does not support function
2802 * 0-n: Number of packets freed. More packets may still remain in ring that
2806 rte_eth_tx_done_cleanup(uint16_t port_id, uint16_t queue_id, uint32_t free_cnt);
2809 * Subtypes for IPsec offload event(@ref RTE_ETH_EVENT_IPSEC) raised by
2812 enum rte_eth_event_ipsec_subtype {
2813 RTE_ETH_EVENT_IPSEC_UNKNOWN = 0,
2814 /**< Unknown event type */
2815 RTE_ETH_EVENT_IPSEC_ESN_OVERFLOW,
2816 /**< Sequence number overflow */
2817 RTE_ETH_EVENT_IPSEC_SA_TIME_EXPIRY,
2818 /**< Soft time expiry of SA */
2819 RTE_ETH_EVENT_IPSEC_SA_BYTE_EXPIRY,
2820 /**< Soft byte expiry of SA */
2821 RTE_ETH_EVENT_IPSEC_MAX
2822 /**< Max value of this enum */
2826 * Descriptor for @ref RTE_ETH_EVENT_IPSEC event. Used by eth dev to send extra
2827 * information of the IPsec offload event.
2829 struct rte_eth_event_ipsec_desc {
2830 enum rte_eth_event_ipsec_subtype subtype;
2831 /**< Type of RTE_ETH_EVENT_IPSEC_* event */
2833 /**< Event specific metadata
2835 * For the following events, *userdata* registered
2836 * with the *rte_security_session* would be returned
2839 * - @ref RTE_ETH_EVENT_IPSEC_ESN_OVERFLOW
2840 * - @ref RTE_ETH_EVENT_IPSEC_SA_TIME_EXPIRY
2841 * - @ref RTE_ETH_EVENT_IPSEC_SA_BYTE_EXPIRY
2843 * @see struct rte_security_session_conf
2849 * The eth device event type for interrupt, and maybe others in the future.
2851 enum rte_eth_event_type {
2852 RTE_ETH_EVENT_UNKNOWN, /**< unknown event type */
2853 RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
2854 RTE_ETH_EVENT_QUEUE_STATE,
2855 /**< queue state event (enabled/disabled) */
2856 RTE_ETH_EVENT_INTR_RESET,
2857 /**< reset interrupt event, sent to VF on PF reset */
2858 RTE_ETH_EVENT_VF_MBOX, /**< message from the VF received by PF */
2859 RTE_ETH_EVENT_MACSEC, /**< MACsec offload related event */
2860 RTE_ETH_EVENT_INTR_RMV, /**< device removal event */
2861 RTE_ETH_EVENT_NEW, /**< port is probed */
2862 RTE_ETH_EVENT_DESTROY, /**< port is released */
2863 RTE_ETH_EVENT_IPSEC, /**< IPsec offload related event */
2864 RTE_ETH_EVENT_MAX /**< max value of this enum */
2867 typedef int (*rte_eth_dev_cb_fn)(uint16_t port_id,
2868 enum rte_eth_event_type event, void *cb_arg, void *ret_param);
2869 /**< user application callback to be registered for interrupts */
2872 * Register a callback function for port event.
2876 * RTE_ETH_ALL means register the event for all port ids.
2880 * User supplied callback function to be called.
2882 * Pointer to the parameters for the registered callback.
2885 * - On success, zero.
2886 * - On failure, a negative value.
2888 int rte_eth_dev_callback_register(uint16_t port_id,
2889 enum rte_eth_event_type event,
2890 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
2893 * Unregister a callback function for port event.
2897 * RTE_ETH_ALL means unregister the event for all port ids.
2901 * User supplied callback function to be called.
2903 * Pointer to the parameters for the registered callback. -1 means to
2904 * remove all for the same callback address and same event.
2907 * - On success, zero.
2908 * - On failure, a negative value.
2910 int rte_eth_dev_callback_unregister(uint16_t port_id,
2911 enum rte_eth_event_type event,
2912 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
2915 * When there is no rx packet coming in Rx Queue for a long time, we can
2916 * sleep lcore related to RX Queue for power saving, and enable rx interrupt
2917 * to be triggered when Rx packet arrives.
2919 * The rte_eth_dev_rx_intr_enable() function enables rx queue
2920 * interrupt on specific rx queue of a port.
2923 * The port identifier of the Ethernet device.
2925 * The index of the receive queue from which to retrieve input packets.
2926 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2927 * to rte_eth_dev_configure().
2929 * - (0) if successful.
2930 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
2932 * - (-ENODEV) if *port_id* invalid.
2933 * - (-EIO) if device is removed.
2935 int rte_eth_dev_rx_intr_enable(uint16_t port_id, uint16_t queue_id);
2938 * When lcore wakes up from rx interrupt indicating packet coming, disable rx
2939 * interrupt and returns to polling mode.
2941 * The rte_eth_dev_rx_intr_disable() function disables rx queue
2942 * interrupt on specific rx queue of a port.
2945 * The port identifier of the Ethernet device.
2947 * The index of the receive queue from which to retrieve input packets.
2948 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2949 * to rte_eth_dev_configure().
2951 * - (0) if successful.
2952 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
2954 * - (-ENODEV) if *port_id* invalid.
2955 * - (-EIO) if device is removed.
2957 int rte_eth_dev_rx_intr_disable(uint16_t port_id, uint16_t queue_id);
2960 * RX Interrupt control per port.
2963 * The port identifier of the Ethernet device.
2965 * Epoll instance fd which the intr vector associated to.
2966 * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
2968 * The operation be performed for the vector.
2969 * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
2973 * - On success, zero.
2974 * - On failure, a negative value.
2976 int rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data);
2979 * RX Interrupt control per queue.
2982 * The port identifier of the Ethernet device.
2984 * The index of the receive queue from which to retrieve input packets.
2985 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2986 * to rte_eth_dev_configure().
2988 * Epoll instance fd which the intr vector associated to.
2989 * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
2991 * The operation be performed for the vector.
2992 * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
2996 * - On success, zero.
2997 * - On failure, a negative value.
2999 int rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
3000 int epfd, int op, void *data);
3004 * @b EXPERIMENTAL: this API may change without prior notice.
3006 * Get interrupt fd per Rx queue.
3009 * The port identifier of the Ethernet device.
3011 * The index of the receive queue from which to retrieve input packets.
3012 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
3013 * to rte_eth_dev_configure().
3015 * - (>=0) the interrupt fd associated to the requested Rx queue if
3021 rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id);
3024 * Turn on the LED on the Ethernet device.
3025 * This function turns on the LED on the Ethernet device.
3028 * The port identifier of the Ethernet device.
3030 * - (0) if successful.
3031 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
3033 * - (-ENODEV) if *port_id* invalid.
3034 * - (-EIO) if device is removed.
3036 int rte_eth_led_on(uint16_t port_id);
3039 * Turn off the LED on the Ethernet device.
3040 * This function turns off the LED on the Ethernet device.
3043 * The port identifier of the Ethernet device.
3045 * - (0) if successful.
3046 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
3048 * - (-ENODEV) if *port_id* invalid.
3049 * - (-EIO) if device is removed.
3051 int rte_eth_led_off(uint16_t port_id);
3054 * Get current status of the Ethernet link flow control for Ethernet device
3057 * The port identifier of the Ethernet device.
3059 * The pointer to the structure where to store the flow control parameters.
3061 * - (0) if successful.
3062 * - (-ENOTSUP) if hardware doesn't support flow control.
3063 * - (-ENODEV) if *port_id* invalid.
3064 * - (-EIO) if device is removed.
3066 int rte_eth_dev_flow_ctrl_get(uint16_t port_id,
3067 struct rte_eth_fc_conf *fc_conf);
3070 * Configure the Ethernet link flow control for Ethernet device
3073 * The port identifier of the Ethernet device.
3075 * The pointer to the structure of the flow control parameters.
3077 * - (0) if successful.
3078 * - (-ENOTSUP) if hardware doesn't support flow control mode.
3079 * - (-ENODEV) if *port_id* invalid.
3080 * - (-EINVAL) if bad parameter
3081 * - (-EIO) if flow control setup failure or device is removed.
3083 int rte_eth_dev_flow_ctrl_set(uint16_t port_id,
3084 struct rte_eth_fc_conf *fc_conf);
3087 * Configure the Ethernet priority flow control under DCB environment
3088 * for Ethernet device.
3091 * The port identifier of the Ethernet device.
3093 * The pointer to the structure of the priority flow control parameters.
3095 * - (0) if successful.
3096 * - (-ENOTSUP) if hardware doesn't support priority flow control mode.
3097 * - (-ENODEV) if *port_id* invalid.
3098 * - (-EINVAL) if bad parameter
3099 * - (-EIO) if flow control setup failure or device is removed.
3101 int rte_eth_dev_priority_flow_ctrl_set(uint16_t port_id,
3102 struct rte_eth_pfc_conf *pfc_conf);
3105 * Add a MAC address to an internal array of addresses used to enable whitelist
3106 * filtering to accept packets only if the destination MAC address matches.
3109 * The port identifier of the Ethernet device.
3111 * The MAC address to add.
3113 * VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
3114 * not enabled, this should be set to 0.
3116 * - (0) if successfully added or *mac_addr* was already added.
3117 * - (-ENOTSUP) if hardware doesn't support this feature.
3118 * - (-ENODEV) if *port* is invalid.
3119 * - (-EIO) if device is removed.
3120 * - (-ENOSPC) if no more MAC addresses can be added.
3121 * - (-EINVAL) if MAC address is invalid.
3123 int rte_eth_dev_mac_addr_add(uint16_t port_id, struct rte_ether_addr *mac_addr,
3127 * Remove a MAC address from the internal array of addresses.
3130 * The port identifier of the Ethernet device.
3132 * MAC address to remove.
3134 * - (0) if successful, or *mac_addr* didn't exist.
3135 * - (-ENOTSUP) if hardware doesn't support.
3136 * - (-ENODEV) if *port* invalid.
3137 * - (-EADDRINUSE) if attempting to remove the default MAC address
3139 int rte_eth_dev_mac_addr_remove(uint16_t port_id,
3140 struct rte_ether_addr *mac_addr);
3143 * Set the default MAC address.
3146 * The port identifier of the Ethernet device.
3148 * New default MAC address.
3150 * - (0) if successful, or *mac_addr* didn't exist.
3151 * - (-ENOTSUP) if hardware doesn't support.
3152 * - (-ENODEV) if *port* invalid.
3153 * - (-EINVAL) if MAC address is invalid.
3155 int rte_eth_dev_default_mac_addr_set(uint16_t port_id,
3156 struct rte_ether_addr *mac_addr);
3159 * Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
3162 * The port identifier of the Ethernet device.
3166 * Redirection table size. The table size can be queried by
3167 * rte_eth_dev_info_get().
3169 * - (0) if successful.
3170 * - (-ENOTSUP) if hardware doesn't support.
3171 * - (-EINVAL) if bad parameter.
3172 * - (-EIO) if device is removed.
3174 int rte_eth_dev_rss_reta_update(uint16_t port_id,
3175 struct rte_eth_rss_reta_entry64 *reta_conf,
3176 uint16_t reta_size);
3179 * Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
3182 * The port identifier of the Ethernet device.
3184 * RETA to query. For each requested reta entry, corresponding bit
3185 * in mask must be set.
3187 * Redirection table size. The table size can be queried by
3188 * rte_eth_dev_info_get().
3190 * - (0) if successful.
3191 * - (-ENOTSUP) if hardware doesn't support.
3192 * - (-EINVAL) if bad parameter.
3193 * - (-EIO) if device is removed.
3195 int rte_eth_dev_rss_reta_query(uint16_t port_id,
3196 struct rte_eth_rss_reta_entry64 *reta_conf,
3197 uint16_t reta_size);
3200 * Updates unicast hash table for receiving packet with the given destination
3201 * MAC address, and the packet is routed to all VFs for which the RX mode is
3202 * accept packets that match the unicast hash table.
3205 * The port identifier of the Ethernet device.
3207 * Unicast MAC address.
3209 * 1 - Set an unicast hash bit for receiving packets with the MAC address.
3210 * 0 - Clear an unicast hash bit.
3212 * - (0) if successful.
3213 * - (-ENOTSUP) if hardware doesn't support.
3214 * - (-ENODEV) if *port_id* invalid.
3215 * - (-EIO) if device is removed.
3216 * - (-EINVAL) if bad parameter.
3218 int rte_eth_dev_uc_hash_table_set(uint16_t port_id, struct rte_ether_addr *addr,
3222 * Updates all unicast hash bitmaps for receiving packet with any Unicast
3223 * Ethernet MAC addresses,the packet is routed to all VFs for which the RX
3224 * mode is accept packets that match the unicast hash table.
3227 * The port identifier of the Ethernet device.
3229 * 1 - Set all unicast hash bitmaps for receiving all the Ethernet
3231 * 0 - Clear all unicast hash bitmaps
3233 * - (0) if successful.
3234 * - (-ENOTSUP) if hardware doesn't support.
3235 * - (-ENODEV) if *port_id* invalid.
3236 * - (-EIO) if device is removed.
3237 * - (-EINVAL) if bad parameter.
3239 int rte_eth_dev_uc_all_hash_table_set(uint16_t port_id, uint8_t on);
3242 * Set a traffic mirroring rule on an Ethernet device
3245 * The port identifier of the Ethernet device.
3246 * @param mirror_conf
3247 * The pointer to the traffic mirroring structure describing the mirroring rule.
3248 * The *rte_eth_vm_mirror_conf* structure includes the type of mirroring rule,
3249 * destination pool and the value of rule if enable vlan or pool mirroring.
3252 * The index of traffic mirroring rule, we support four separated rules.
3254 * 1 - Enable a mirroring rule.
3255 * 0 - Disable a mirroring rule.
3257 * - (0) if successful.
3258 * - (-ENOTSUP) if hardware doesn't support this feature.
3259 * - (-ENODEV) if *port_id* invalid.
3260 * - (-EIO) if device is removed.
3261 * - (-EINVAL) if the mr_conf information is not correct.
3263 int rte_eth_mirror_rule_set(uint16_t port_id,
3264 struct rte_eth_mirror_conf *mirror_conf,
3269 * Reset a traffic mirroring rule on an Ethernet device.
3272 * The port identifier of the Ethernet device.
3274 * The index of traffic mirroring rule, we support four separated rules.
3276 * - (0) if successful.
3277 * - (-ENOTSUP) if hardware doesn't support this feature.
3278 * - (-ENODEV) if *port_id* invalid.
3279 * - (-EIO) if device is removed.
3280 * - (-EINVAL) if bad parameter.
3282 int rte_eth_mirror_rule_reset(uint16_t port_id,
3286 * Set the rate limitation for a queue on an Ethernet device.
3289 * The port identifier of the Ethernet device.
3293 * The tx rate in Mbps. Allocated from the total port link speed.
3295 * - (0) if successful.
3296 * - (-ENOTSUP) if hardware doesn't support this feature.
3297 * - (-ENODEV) if *port_id* invalid.
3298 * - (-EIO) if device is removed.
3299 * - (-EINVAL) if bad parameter.
3301 int rte_eth_set_queue_rate_limit(uint16_t port_id, uint16_t queue_idx,
3305 * Configuration of Receive Side Scaling hash computation of Ethernet device.
3308 * The port identifier of the Ethernet device.
3310 * The new configuration to use for RSS hash computation on the port.
3312 * - (0) if successful.
3313 * - (-ENODEV) if port identifier is invalid.
3314 * - (-EIO) if device is removed.
3315 * - (-ENOTSUP) if hardware doesn't support.
3316 * - (-EINVAL) if bad parameter.
3318 int rte_eth_dev_rss_hash_update(uint16_t port_id,
3319 struct rte_eth_rss_conf *rss_conf);
3322 * Retrieve current configuration of Receive Side Scaling hash computation
3323 * of Ethernet device.
3326 * The port identifier of the Ethernet device.
3328 * Where to store the current RSS hash configuration of the Ethernet device.
3330 * - (0) if successful.
3331 * - (-ENODEV) if port identifier is invalid.
3332 * - (-EIO) if device is removed.
3333 * - (-ENOTSUP) if hardware doesn't support RSS.
3336 rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
3337 struct rte_eth_rss_conf *rss_conf);
3340 * Add UDP tunneling port for a specific type of tunnel.
3341 * The packets with this UDP port will be identified as this type of tunnel.
3342 * Before enabling any offloading function for a tunnel, users can call this API
3343 * to change or add more UDP port for the tunnel. So the offloading function
3344 * can take effect on the packets with the specific UDP port.
3347 * The port identifier of the Ethernet device.
3349 * UDP tunneling configuration.
3352 * - (0) if successful.
3353 * - (-ENODEV) if port identifier is invalid.
3354 * - (-EIO) if device is removed.
3355 * - (-ENOTSUP) if hardware doesn't support tunnel type.
3358 rte_eth_dev_udp_tunnel_port_add(uint16_t port_id,
3359 struct rte_eth_udp_tunnel *tunnel_udp);
3362 * Delete UDP tunneling port a specific type of tunnel.
3363 * The packets with this UDP port will not be identified as this type of tunnel
3365 * Before enabling any offloading function for a tunnel, users can call this API
3366 * to delete a UDP port for the tunnel. So the offloading function will not take
3367 * effect on the packets with the specific UDP port.
3370 * The port identifier of the Ethernet device.
3372 * UDP tunneling configuration.
3375 * - (0) if successful.
3376 * - (-ENODEV) if port identifier is invalid.
3377 * - (-EIO) if device is removed.
3378 * - (-ENOTSUP) if hardware doesn't support tunnel type.
3381 rte_eth_dev_udp_tunnel_port_delete(uint16_t port_id,
3382 struct rte_eth_udp_tunnel *tunnel_udp);
3385 * Check whether the filter type is supported on an Ethernet device.
3386 * All the supported filter types are defined in 'rte_eth_ctrl.h'.
3389 * The port identifier of the Ethernet device.
3390 * @param filter_type
3393 * - (0) if successful.
3394 * - (-ENOTSUP) if hardware doesn't support this filter type.
3395 * - (-ENODEV) if *port_id* invalid.
3396 * - (-EIO) if device is removed.
3399 int rte_eth_dev_filter_supported(uint16_t port_id,
3400 enum rte_filter_type filter_type);
3403 * Take operations to assigned filter type on an Ethernet device.
3404 * All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.
3407 * The port identifier of the Ethernet device.
3408 * @param filter_type
3411 * Type of operation.
3413 * A pointer to arguments defined specifically for the operation.
3415 * - (0) if successful.
3416 * - (-ENOTSUP) if hardware doesn't support.
3417 * - (-ENODEV) if *port_id* invalid.
3418 * - (-EIO) if device is removed.
3419 * - others depends on the specific operations implementation.
3422 int rte_eth_dev_filter_ctrl(uint16_t port_id, enum rte_filter_type filter_type,
3423 enum rte_filter_op filter_op, void *arg);
3426 * Get DCB information on an Ethernet device.
3429 * The port identifier of the Ethernet device.
3433 * - (0) if successful.
3434 * - (-ENODEV) if port identifier is invalid.
3435 * - (-EIO) if device is removed.
3436 * - (-ENOTSUP) if hardware doesn't support.
3438 int rte_eth_dev_get_dcb_info(uint16_t port_id,
3439 struct rte_eth_dcb_info *dcb_info);
3441 struct rte_eth_rxtx_callback;
3444 * Add a callback to be called on packet RX on a given port and queue.
3446 * This API configures a function to be called for each burst of
3447 * packets received on a given NIC port queue. The return value is a pointer
3448 * that can be used to later remove the callback using
3449 * rte_eth_remove_rx_callback().
3451 * Multiple functions are called in the order that they are added.
3454 * The port identifier of the Ethernet device.
3456 * The queue on the Ethernet device on which the callback is to be added.
3458 * The callback function
3460 * A generic pointer parameter which will be passed to each invocation of the
3461 * callback function on this port and queue.
3465 * On success, a pointer value which can later be used to remove the callback.
3467 const struct rte_eth_rxtx_callback *
3468 rte_eth_add_rx_callback(uint16_t port_id, uint16_t queue_id,
3469 rte_rx_callback_fn fn, void *user_param);
3472 * Add a callback that must be called first on packet RX on a given port
3475 * This API configures a first function to be called for each burst of
3476 * packets received on a given NIC port queue. The return value is a pointer
3477 * that can be used to later remove the callback using
3478 * rte_eth_remove_rx_callback().
3480 * Multiple functions are called in the order that they are added.
3483 * The port identifier of the Ethernet device.
3485 * The queue on the Ethernet device on which the callback is to be added.
3487 * The callback function
3489 * A generic pointer parameter which will be passed to each invocation of the
3490 * callback function on this port and queue.
3494 * On success, a pointer value which can later be used to remove the callback.
3496 const struct rte_eth_rxtx_callback *
3497 rte_eth_add_first_rx_callback(uint16_t port_id, uint16_t queue_id,
3498 rte_rx_callback_fn fn, void *user_param);
3501 * Add a callback to be called on packet TX on a given port and queue.
3503 * This API configures a function to be called for each burst of
3504 * packets sent on a given NIC port queue. The return value is a pointer
3505 * that can be used to later remove the callback using
3506 * rte_eth_remove_tx_callback().
3508 * Multiple functions are called in the order that they are added.
3511 * The port identifier of the Ethernet device.
3513 * The queue on the Ethernet device on which the callback is to be added.
3515 * The callback function
3517 * A generic pointer parameter which will be passed to each invocation of the
3518 * callback function on this port and queue.
3522 * On success, a pointer value which can later be used to remove the callback.
3524 const struct rte_eth_rxtx_callback *
3525 rte_eth_add_tx_callback(uint16_t port_id, uint16_t queue_id,
3526 rte_tx_callback_fn fn, void *user_param);
3529 * Remove an RX packet callback from a given port and queue.
3531 * This function is used to removed callbacks that were added to a NIC port
3532 * queue using rte_eth_add_rx_callback().
3534 * Note: the callback is removed from the callback list but it isn't freed
3535 * since the it may still be in use. The memory for the callback can be
3536 * subsequently freed back by the application by calling rte_free():
3538 * - Immediately - if the port is stopped, or the user knows that no
3539 * callbacks are in flight e.g. if called from the thread doing RX/TX
3542 * - After a short delay - where the delay is sufficient to allow any
3543 * in-flight callbacks to complete.
3546 * The port identifier of the Ethernet device.
3548 * The queue on the Ethernet device from which the callback is to be removed.
3550 * User supplied callback created via rte_eth_add_rx_callback().
3553 * - 0: Success. Callback was removed.
3554 * - -ENOTSUP: Callback support is not available.
3555 * - -EINVAL: The port_id or the queue_id is out of range, or the callback
3556 * is NULL or not found for the port/queue.
3558 int rte_eth_remove_rx_callback(uint16_t port_id, uint16_t queue_id,
3559 const struct rte_eth_rxtx_callback *user_cb);
3562 * Remove a TX packet callback from a given port and queue.
3564 * This function is used to removed callbacks that were added to a NIC port
3565 * queue using rte_eth_add_tx_callback().
3567 * Note: the callback is removed from the callback list but it isn't freed
3568 * since the it may still be in use. The memory for the callback can be
3569 * subsequently freed back by the application by calling rte_free():
3571 * - Immediately - if the port is stopped, or the user knows that no
3572 * callbacks are in flight e.g. if called from the thread doing RX/TX
3575 * - After a short delay - where the delay is sufficient to allow any
3576 * in-flight callbacks to complete.
3579 * The port identifier of the Ethernet device.
3581 * The queue on the Ethernet device from which the callback is to be removed.
3583 * User supplied callback created via rte_eth_add_tx_callback().
3586 * - 0: Success. Callback was removed.
3587 * - -ENOTSUP: Callback support is not available.
3588 * - -EINVAL: The port_id or the queue_id is out of range, or the callback
3589 * is NULL or not found for the port/queue.
3591 int rte_eth_remove_tx_callback(uint16_t port_id, uint16_t queue_id,
3592 const struct rte_eth_rxtx_callback *user_cb);
3595 * Retrieve information about given port's RX queue.
3598 * The port identifier of the Ethernet device.
3600 * The RX queue on the Ethernet device for which information
3601 * will be retrieved.
3603 * A pointer to a structure of type *rte_eth_rxq_info_info* to be filled with
3604 * the information of the Ethernet device.
3608 * - -ENOTSUP: routine is not supported by the device PMD.
3609 * - -EINVAL: The port_id or the queue_id is out of range.
3611 int rte_eth_rx_queue_info_get(uint16_t port_id, uint16_t queue_id,
3612 struct rte_eth_rxq_info *qinfo);
3615 * Retrieve information about given port's TX queue.
3618 * The port identifier of the Ethernet device.
3620 * The TX queue on the Ethernet device for which information
3621 * will be retrieved.
3623 * A pointer to a structure of type *rte_eth_txq_info_info* to be filled with
3624 * the information of the Ethernet device.
3628 * - -ENOTSUP: routine is not supported by the device PMD.
3629 * - -EINVAL: The port_id or the queue_id is out of range.
3631 int rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
3632 struct rte_eth_txq_info *qinfo);
3635 * Retrieve information about the Rx packet burst mode.
3638 * The port identifier of the Ethernet device.
3640 * The Rx queue on the Ethernet device for which information
3641 * will be retrieved.
3643 * A pointer to a structure of type *rte_eth_burst_mode* to be filled
3644 * with the information of the packet burst mode.
3648 * - -ENOTSUP: routine is not supported by the device PMD.
3649 * - -EINVAL: The port_id or the queue_id is out of range.
3652 int rte_eth_rx_burst_mode_get(uint16_t port_id, uint16_t queue_id,
3653 struct rte_eth_burst_mode *mode);
3656 * Retrieve information about the Tx packet burst mode.
3659 * The port identifier of the Ethernet device.
3661 * The Tx queue on the Ethernet device for which information
3662 * will be retrieved.
3664 * A pointer to a structure of type *rte_eth_burst_mode* to be filled
3665 * with the information of the packet burst mode.
3669 * - -ENOTSUP: routine is not supported by the device PMD.
3670 * - -EINVAL: The port_id or the queue_id is out of range.
3673 int rte_eth_tx_burst_mode_get(uint16_t port_id, uint16_t queue_id,
3674 struct rte_eth_burst_mode *mode);
3677 * Retrieve name about burst mode option.
3680 * The burst mode option of type *rte_eth_burst_mode_option*.
3684 * - "xxx": name of the mode option.
3688 rte_eth_burst_mode_option_name(uint64_t option);
3691 * Retrieve device registers and register attributes (number of registers and
3695 * The port identifier of the Ethernet device.
3697 * Pointer to rte_dev_reg_info structure to fill in. If info->data is
3698 * NULL the function fills in the width and length fields. If non-NULL
3699 * the registers are put into the buffer pointed at by the data field.
3701 * - (0) if successful.
3702 * - (-ENOTSUP) if hardware doesn't support.
3703 * - (-ENODEV) if *port_id* invalid.
3704 * - (-EIO) if device is removed.
3705 * - others depends on the specific operations implementation.
3707 int rte_eth_dev_get_reg_info(uint16_t port_id, struct rte_dev_reg_info *info);
3710 * Retrieve size of device EEPROM
3713 * The port identifier of the Ethernet device.
3715 * - (>=0) EEPROM size if successful.
3716 * - (-ENOTSUP) if hardware doesn't support.
3717 * - (-ENODEV) if *port_id* invalid.
3718 * - (-EIO) if device is removed.
3719 * - others depends on the specific operations implementation.
3721 int rte_eth_dev_get_eeprom_length(uint16_t port_id);
3724 * Retrieve EEPROM and EEPROM attribute
3727 * The port identifier of the Ethernet device.
3729 * The template includes buffer for return EEPROM data and
3730 * EEPROM attributes to be filled.
3732 * - (0) if successful.
3733 * - (-ENOTSUP) if hardware doesn't support.
3734 * - (-ENODEV) if *port_id* invalid.
3735 * - (-EIO) if device is removed.
3736 * - others depends on the specific operations implementation.
3738 int rte_eth_dev_get_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
3741 * Program EEPROM with provided data
3744 * The port identifier of the Ethernet device.
3746 * The template includes EEPROM data for programming and
3747 * EEPROM attributes to be filled
3749 * - (0) if successful.
3750 * - (-ENOTSUP) if hardware doesn't support.
3751 * - (-ENODEV) if *port_id* invalid.
3752 * - (-EIO) if device is removed.
3753 * - others depends on the specific operations implementation.
3755 int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
3759 * @b EXPERIMENTAL: this API may change without prior notice.
3761 * Retrieve the type and size of plugin module EEPROM
3764 * The port identifier of the Ethernet device.
3766 * The type and size of plugin module EEPROM.
3768 * - (0) if successful.
3769 * - (-ENOTSUP) if hardware doesn't support.
3770 * - (-ENODEV) if *port_id* invalid.
3771 * - (-EIO) if device is removed.
3772 * - others depends on the specific operations implementation.
3776 rte_eth_dev_get_module_info(uint16_t port_id,
3777 struct rte_eth_dev_module_info *modinfo);
3781 * @b EXPERIMENTAL: this API may change without prior notice.
3783 * Retrieve the data of plugin module EEPROM
3786 * The port identifier of the Ethernet device.
3788 * The template includes the plugin module EEPROM attributes, and the
3789 * buffer for return plugin module EEPROM data.
3791 * - (0) if successful.
3792 * - (-ENOTSUP) if hardware doesn't support.
3793 * - (-ENODEV) if *port_id* invalid.
3794 * - (-EIO) if device is removed.
3795 * - others depends on the specific operations implementation.
3799 rte_eth_dev_get_module_eeprom(uint16_t port_id,
3800 struct rte_dev_eeprom_info *info);
3803 * Set the list of multicast addresses to filter on an Ethernet device.
3806 * The port identifier of the Ethernet device.
3807 * @param mc_addr_set
3808 * The array of multicast addresses to set. Equal to NULL when the function
3809 * is invoked to flush the set of filtered addresses.
3811 * The number of multicast addresses in the *mc_addr_set* array. Equal to 0
3812 * when the function is invoked to flush the set of filtered addresses.
3814 * - (0) if successful.
3815 * - (-ENODEV) if *port_id* invalid.
3816 * - (-EIO) if device is removed.
3817 * - (-ENOTSUP) if PMD of *port_id* doesn't support multicast filtering.
3818 * - (-ENOSPC) if *port_id* has not enough multicast filtering resources.
3820 int rte_eth_dev_set_mc_addr_list(uint16_t port_id,
3821 struct rte_ether_addr *mc_addr_set,
3822 uint32_t nb_mc_addr);
3825 * Enable IEEE1588/802.1AS timestamping for an Ethernet device.
3828 * The port identifier of the Ethernet device.
3832 * - -ENODEV: The port ID is invalid.
3833 * - -EIO: if device is removed.
3834 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3836 int rte_eth_timesync_enable(uint16_t port_id);
3839 * Disable IEEE1588/802.1AS timestamping for an Ethernet device.
3842 * The port identifier of the Ethernet device.
3846 * - -ENODEV: The port ID is invalid.
3847 * - -EIO: if device is removed.
3848 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3850 int rte_eth_timesync_disable(uint16_t port_id);
3853 * Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.
3856 * The port identifier of the Ethernet device.
3858 * Pointer to the timestamp struct.
3860 * Device specific flags. Used to pass the RX timesync register index to
3861 * i40e. Unused in igb/ixgbe, pass 0 instead.
3865 * - -EINVAL: No timestamp is available.
3866 * - -ENODEV: The port ID is invalid.
3867 * - -EIO: if device is removed.
3868 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3870 int rte_eth_timesync_read_rx_timestamp(uint16_t port_id,
3871 struct timespec *timestamp, uint32_t flags);
3874 * Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.
3877 * The port identifier of the Ethernet device.
3879 * Pointer to the timestamp struct.
3883 * - -EINVAL: No timestamp is available.
3884 * - -ENODEV: The port ID is invalid.
3885 * - -EIO: if device is removed.
3886 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3888 int rte_eth_timesync_read_tx_timestamp(uint16_t port_id,
3889 struct timespec *timestamp);
3892 * Adjust the timesync clock on an Ethernet device.
3894 * This is usually used in conjunction with other Ethdev timesync functions to
3895 * synchronize the device time using the IEEE1588/802.1AS protocol.
3898 * The port identifier of the Ethernet device.
3900 * The adjustment in nanoseconds.
3904 * - -ENODEV: The port ID is invalid.
3905 * - -EIO: if device is removed.
3906 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3908 int rte_eth_timesync_adjust_time(uint16_t port_id, int64_t delta);
3911 * Read the time from the timesync clock on an Ethernet device.
3913 * This is usually used in conjunction with other Ethdev timesync functions to
3914 * synchronize the device time using the IEEE1588/802.1AS protocol.
3917 * The port identifier of the Ethernet device.
3919 * Pointer to the timespec struct that holds the time.
3924 int rte_eth_timesync_read_time(uint16_t port_id, struct timespec *time);
3927 * Set the time of the timesync clock on an Ethernet device.
3929 * This is usually used in conjunction with other Ethdev timesync functions to
3930 * synchronize the device time using the IEEE1588/802.1AS protocol.
3933 * The port identifier of the Ethernet device.
3935 * Pointer to the timespec struct that holds the time.
3939 * - -EINVAL: No timestamp is available.
3940 * - -ENODEV: The port ID is invalid.
3941 * - -EIO: if device is removed.
3942 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3944 int rte_eth_timesync_write_time(uint16_t port_id, const struct timespec *time);
3948 * @b EXPERIMENTAL: this API may change without prior notice.
3950 * Read the current clock counter of an Ethernet device
3952 * This returns the current raw clock value of an Ethernet device. It is
3953 * a raw amount of ticks, with no given time reference.
3954 * The value returned here is from the same clock than the one
3955 * filling timestamp field of Rx packets when using hardware timestamp
3956 * offload. Therefore it can be used to compute a precise conversion of
3957 * the device clock to the real time.
3959 * E.g, a simple heuristic to derivate the frequency would be:
3960 * uint64_t start, end;
3961 * rte_eth_read_clock(port, start);
3962 * rte_delay_ms(100);
3963 * rte_eth_read_clock(port, end);
3964 * double freq = (end - start) * 10;
3966 * Compute a common reference with:
3967 * uint64_t base_time_sec = current_time();
3968 * uint64_t base_clock;
3969 * rte_eth_read_clock(port, base_clock);
3971 * Then, convert the raw mbuf timestamp with:
3972 * base_time_sec + (double)(mbuf->timestamp - base_clock) / freq;
3974 * This simple example will not provide a very good accuracy. One must
3975 * at least measure multiple times the frequency and do a regression.
3976 * To avoid deviation from the system time, the common reference can
3977 * be repeated from time to time. The integer division can also be
3978 * converted by a multiplication and a shift for better performance.
3981 * The port identifier of the Ethernet device.
3983 * Pointer to the uint64_t that holds the raw clock value.
3987 * - -ENODEV: The port ID is invalid.
3988 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3992 rte_eth_read_clock(uint16_t port_id, uint64_t *clock);
3995 * Config l2 tunnel ether type of an Ethernet device for filtering specific
3996 * tunnel packets by ether type.
3999 * The port identifier of the Ethernet device.
4001 * l2 tunnel configuration.
4004 * - (0) if successful.
4005 * - (-ENODEV) if port identifier is invalid.
4006 * - (-EIO) if device is removed.
4007 * - (-ENOTSUP) if hardware doesn't support tunnel type.
4010 rte_eth_dev_l2_tunnel_eth_type_conf(uint16_t port_id,
4011 struct rte_eth_l2_tunnel_conf *l2_tunnel);
4014 * Enable/disable l2 tunnel offload functions. Include,
4015 * 1, The ability of parsing a type of l2 tunnel of an Ethernet device.
4016 * Filtering, forwarding and offloading this type of tunnel packets depend on
4018 * 2, Stripping the l2 tunnel tag.
4019 * 3, Insertion of the l2 tunnel tag.
4020 * 4, Forwarding the packets based on the l2 tunnel tag.
4023 * The port identifier of the Ethernet device.
4025 * l2 tunnel parameters.
4027 * Indicate the offload function.
4029 * Enable or disable this function.
4032 * - (0) if successful.
4033 * - (-ENODEV) if port identifier is invalid.
4034 * - (-EIO) if device is removed.
4035 * - (-ENOTSUP) if hardware doesn't support tunnel type.
4038 rte_eth_dev_l2_tunnel_offload_set(uint16_t port_id,
4039 struct rte_eth_l2_tunnel_conf *l2_tunnel,
4044 * Get the port id from device name. The device name should be specified
4046 * - PCIe address (Domain:Bus:Device.Function), for example- 0000:2:00.0
4047 * - SoC device name, for example- fsl-gmac0
4048 * - vdev dpdk name, for example- net_[pcap0|null0|tap0]
4051 * pci address or name of the device
4053 * pointer to port identifier of the device
4055 * - (0) if successful and port_id is filled.
4056 * - (-ENODEV or -EINVAL) on failure.
4059 rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id);
4062 * Get the device name from port id. The device name is specified as below:
4063 * - PCIe address (Domain:Bus:Device.Function), for example- 0000:02:00.0
4064 * - SoC device name, for example- fsl-gmac0
4065 * - vdev dpdk name, for example- net_[pcap0|null0|tun0|tap0]
4068 * Port identifier of the device.
4070 * Buffer of size RTE_ETH_NAME_MAX_LEN to store the name.
4072 * - (0) if successful.
4073 * - (-EINVAL) on failure.
4076 rte_eth_dev_get_name_by_port(uint16_t port_id, char *name);
4079 * Check that numbers of Rx and Tx descriptors satisfy descriptors limits from
4080 * the ethernet device information, otherwise adjust them to boundaries.
4083 * The port identifier of the Ethernet device.
4085 * A pointer to a uint16_t where the number of receive
4086 * descriptors stored.
4088 * A pointer to a uint16_t where the number of transmit
4089 * descriptors stored.
4091 * - (0) if successful.
4092 * - (-ENOTSUP, -ENODEV or -EINVAL) on failure.
4094 int rte_eth_dev_adjust_nb_rx_tx_desc(uint16_t port_id,
4095 uint16_t *nb_rx_desc,
4096 uint16_t *nb_tx_desc);
4099 * Test if a port supports specific mempool ops.
4102 * Port identifier of the Ethernet device.
4104 * The name of the pool operations to test.
4106 * - 0: best mempool ops choice for this port.
4107 * - 1: mempool ops are supported for this port.
4108 * - -ENOTSUP: mempool ops not supported for this port.
4109 * - -ENODEV: Invalid port Identifier.
4110 * - -EINVAL: Pool param is null.
4113 rte_eth_dev_pool_ops_supported(uint16_t port_id, const char *pool);
4116 * Get the security context for the Ethernet device.
4119 * Port identifier of the Ethernet device
4122 * - pointer to security context on success.
4125 rte_eth_dev_get_sec_ctx(uint16_t port_id);
4128 #include <rte_ethdev_core.h>
4132 * Retrieve a burst of input packets from a receive queue of an Ethernet
4133 * device. The retrieved packets are stored in *rte_mbuf* structures whose
4134 * pointers are supplied in the *rx_pkts* array.
4136 * The rte_eth_rx_burst() function loops, parsing the RX ring of the
4137 * receive queue, up to *nb_pkts* packets, and for each completed RX
4138 * descriptor in the ring, it performs the following operations:
4140 * - Initialize the *rte_mbuf* data structure associated with the
4141 * RX descriptor according to the information provided by the NIC into
4142 * that RX descriptor.
4144 * - Store the *rte_mbuf* data structure into the next entry of the
4147 * - Replenish the RX descriptor with a new *rte_mbuf* buffer
4148 * allocated from the memory pool associated with the receive queue at
4149 * initialization time.
4151 * When retrieving an input packet that was scattered by the controller
4152 * into multiple receive descriptors, the rte_eth_rx_burst() function
4153 * appends the associated *rte_mbuf* buffers to the first buffer of the
4156 * The rte_eth_rx_burst() function returns the number of packets
4157 * actually retrieved, which is the number of *rte_mbuf* data structures
4158 * effectively supplied into the *rx_pkts* array.
4159 * A return value equal to *nb_pkts* indicates that the RX queue contained
4160 * at least *rx_pkts* packets, and this is likely to signify that other
4161 * received packets remain in the input queue. Applications implementing
4162 * a "retrieve as much received packets as possible" policy can check this
4163 * specific case and keep invoking the rte_eth_rx_burst() function until
4164 * a value less than *nb_pkts* is returned.
4166 * This receive method has the following advantages:
4168 * - It allows a run-to-completion network stack engine to retrieve and
4169 * to immediately process received packets in a fast burst-oriented
4170 * approach, avoiding the overhead of unnecessary intermediate packet
4171 * queue/dequeue operations.
4173 * - Conversely, it also allows an asynchronous-oriented processing
4174 * method to retrieve bursts of received packets and to immediately
4175 * queue them for further parallel processing by another logical core,
4176 * for instance. However, instead of having received packets being
4177 * individually queued by the driver, this approach allows the caller
4178 * of the rte_eth_rx_burst() function to queue a burst of retrieved
4179 * packets at a time and therefore dramatically reduce the cost of
4180 * enqueue/dequeue operations per packet.
4182 * - It allows the rte_eth_rx_burst() function of the driver to take
4183 * advantage of burst-oriented hardware features (CPU cache,
4184 * prefetch instructions, and so on) to minimize the number of CPU
4185 * cycles per packet.
4187 * To summarize, the proposed receive API enables many
4188 * burst-oriented optimizations in both synchronous and asynchronous
4189 * packet processing environments with no overhead in both cases.
4191 * The rte_eth_rx_burst() function does not provide any error
4192 * notification to avoid the corresponding overhead. As a hint, the
4193 * upper-level application might check the status of the device link once
4194 * being systematically returned a 0 value for a given number of tries.
4197 * The port identifier of the Ethernet device.
4199 * The index of the receive queue from which to retrieve input packets.
4200 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
4201 * to rte_eth_dev_configure().
4203 * The address of an array of pointers to *rte_mbuf* structures that
4204 * must be large enough to store *nb_pkts* pointers in it.
4206 * The maximum number of packets to retrieve.
4208 * The number of packets actually retrieved, which is the number
4209 * of pointers to *rte_mbuf* structures effectively supplied to the
4212 static inline uint16_t
4213 rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
4214 struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
4216 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4219 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4220 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
4221 RTE_FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
4223 if (queue_id >= dev->data->nb_rx_queues) {
4224 RTE_ETHDEV_LOG(ERR, "Invalid RX queue_id=%u\n", queue_id);
4228 nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
4231 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
4232 if (unlikely(dev->post_rx_burst_cbs[queue_id] != NULL)) {
4233 struct rte_eth_rxtx_callback *cb =
4234 dev->post_rx_burst_cbs[queue_id];
4237 nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
4238 nb_pkts, cb->param);
4240 } while (cb != NULL);
4248 * Get the number of used descriptors of a rx queue
4251 * The port identifier of the Ethernet device.
4253 * The queue id on the specific port.
4255 * The number of used descriptors in the specific queue, or:
4256 * (-EINVAL) if *port_id* or *queue_id* is invalid
4257 * (-ENOTSUP) if the device does not support this function
4260 rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
4262 struct rte_eth_dev *dev;
4264 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
4265 dev = &rte_eth_devices[port_id];
4266 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
4267 if (queue_id >= dev->data->nb_rx_queues)
4270 return (int)(*dev->dev_ops->rx_queue_count)(dev, queue_id);
4274 * Check if the DD bit of the specific RX descriptor in the queue has been set
4277 * The port identifier of the Ethernet device.
4279 * The queue id on the specific port.
4281 * The offset of the descriptor ID from tail.
4283 * - (1) if the specific DD bit is set.
4284 * - (0) if the specific DD bit is not set.
4285 * - (-ENODEV) if *port_id* invalid.
4286 * - (-ENOTSUP) if the device does not support this function
4289 rte_eth_rx_descriptor_done(uint16_t port_id, uint16_t queue_id, uint16_t offset)
4291 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4292 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4293 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_done, -ENOTSUP);
4294 return (*dev->dev_ops->rx_descriptor_done)( \
4295 dev->data->rx_queues[queue_id], offset);
4298 #define RTE_ETH_RX_DESC_AVAIL 0 /**< Desc available for hw. */
4299 #define RTE_ETH_RX_DESC_DONE 1 /**< Desc done, filled by hw. */
4300 #define RTE_ETH_RX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
4303 * Check the status of a Rx descriptor in the queue
4305 * It should be called in a similar context than the Rx function:
4306 * - on a dataplane core
4307 * - not concurrently on the same queue
4309 * Since it's a dataplane function, no check is performed on port_id and
4310 * queue_id. The caller must therefore ensure that the port is enabled
4311 * and the queue is configured and running.
4313 * Note: accessing to a random descriptor in the ring may trigger cache
4314 * misses and have a performance impact.
4317 * A valid port identifier of the Ethernet device which.
4319 * A valid Rx queue identifier on this port.
4321 * The offset of the descriptor starting from tail (0 is the next
4322 * packet to be received by the driver).
4325 * - (RTE_ETH_RX_DESC_AVAIL): Descriptor is available for the hardware to
4327 * - (RTE_ETH_RX_DESC_DONE): Descriptor is done, it is filled by hw, but
4328 * not yet processed by the driver (i.e. in the receive queue).
4329 * - (RTE_ETH_RX_DESC_UNAVAIL): Descriptor is unavailable, either hold by
4330 * the driver and not yet returned to hw, or reserved by the hw.
4331 * - (-EINVAL) bad descriptor offset.
4332 * - (-ENOTSUP) if the device does not support this function.
4333 * - (-ENODEV) bad port or queue (only if compiled with debug).
4336 rte_eth_rx_descriptor_status(uint16_t port_id, uint16_t queue_id,
4339 struct rte_eth_dev *dev;
4342 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4343 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4345 dev = &rte_eth_devices[port_id];
4346 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4347 if (queue_id >= dev->data->nb_rx_queues)
4350 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_status, -ENOTSUP);
4351 rxq = dev->data->rx_queues[queue_id];
4353 return (*dev->dev_ops->rx_descriptor_status)(rxq, offset);
4356 #define RTE_ETH_TX_DESC_FULL 0 /**< Desc filled for hw, waiting xmit. */
4357 #define RTE_ETH_TX_DESC_DONE 1 /**< Desc done, packet is transmitted. */
4358 #define RTE_ETH_TX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
4361 * Check the status of a Tx descriptor in the queue.
4363 * It should be called in a similar context than the Tx function:
4364 * - on a dataplane core
4365 * - not concurrently on the same queue
4367 * Since it's a dataplane function, no check is performed on port_id and
4368 * queue_id. The caller must therefore ensure that the port is enabled
4369 * and the queue is configured and running.
4371 * Note: accessing to a random descriptor in the ring may trigger cache
4372 * misses and have a performance impact.
4375 * A valid port identifier of the Ethernet device which.
4377 * A valid Tx queue identifier on this port.
4379 * The offset of the descriptor starting from tail (0 is the place where
4380 * the next packet will be send).
4383 * - (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e.
4384 * in the transmit queue.
4385 * - (RTE_ETH_TX_DESC_DONE) Hardware is done with this descriptor, it can
4386 * be reused by the driver.
4387 * - (RTE_ETH_TX_DESC_UNAVAIL): Descriptor is unavailable, reserved by the
4388 * driver or the hardware.
4389 * - (-EINVAL) bad descriptor offset.
4390 * - (-ENOTSUP) if the device does not support this function.
4391 * - (-ENODEV) bad port or queue (only if compiled with debug).
4393 static inline int rte_eth_tx_descriptor_status(uint16_t port_id,
4394 uint16_t queue_id, uint16_t offset)
4396 struct rte_eth_dev *dev;
4399 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4400 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4402 dev = &rte_eth_devices[port_id];
4403 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4404 if (queue_id >= dev->data->nb_tx_queues)
4407 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_descriptor_status, -ENOTSUP);
4408 txq = dev->data->tx_queues[queue_id];
4410 return (*dev->dev_ops->tx_descriptor_status)(txq, offset);
4414 * Send a burst of output packets on a transmit queue of an Ethernet device.
4416 * The rte_eth_tx_burst() function is invoked to transmit output packets
4417 * on the output queue *queue_id* of the Ethernet device designated by its
4419 * The *nb_pkts* parameter is the number of packets to send which are
4420 * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
4421 * allocated from a pool created with rte_pktmbuf_pool_create().
4422 * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
4423 * up to the number of transmit descriptors available in the TX ring of the
4425 * For each packet to send, the rte_eth_tx_burst() function performs
4426 * the following operations:
4428 * - Pick up the next available descriptor in the transmit ring.
4430 * - Free the network buffer previously sent with that descriptor, if any.
4432 * - Initialize the transmit descriptor with the information provided
4433 * in the *rte_mbuf data structure.
4435 * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
4436 * the rte_eth_tx_burst() function uses several transmit descriptors
4439 * The rte_eth_tx_burst() function returns the number of packets it
4440 * actually sent. A return value equal to *nb_pkts* means that all packets
4441 * have been sent, and this is likely to signify that other output packets
4442 * could be immediately transmitted again. Applications that implement a
4443 * "send as many packets to transmit as possible" policy can check this
4444 * specific case and keep invoking the rte_eth_tx_burst() function until
4445 * a value less than *nb_pkts* is returned.
4447 * It is the responsibility of the rte_eth_tx_burst() function to
4448 * transparently free the memory buffers of packets previously sent.
4449 * This feature is driven by the *tx_free_thresh* value supplied to the
4450 * rte_eth_dev_configure() function at device configuration time.
4451 * When the number of free TX descriptors drops below this threshold, the
4452 * rte_eth_tx_burst() function must [attempt to] free the *rte_mbuf* buffers
4453 * of those packets whose transmission was effectively completed.
4455 * If the PMD is DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
4456 * invoke this function concurrently on the same tx queue without SW lock.
4457 * @see rte_eth_dev_info_get, struct rte_eth_txconf::offloads
4459 * @see rte_eth_tx_prepare to perform some prior checks or adjustments
4463 * The port identifier of the Ethernet device.
4465 * The index of the transmit queue through which output packets must be
4467 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4468 * to rte_eth_dev_configure().
4470 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
4471 * which contain the output packets.
4473 * The maximum number of packets to transmit.
4475 * The number of output packets actually stored in transmit descriptors of
4476 * the transmit ring. The return value can be less than the value of the
4477 * *tx_pkts* parameter when the transmit ring is full or has been filled up.
4479 static inline uint16_t
4480 rte_eth_tx_burst(uint16_t port_id, uint16_t queue_id,
4481 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4483 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4485 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4486 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
4487 RTE_FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
4489 if (queue_id >= dev->data->nb_tx_queues) {
4490 RTE_ETHDEV_LOG(ERR, "Invalid TX queue_id=%u\n", queue_id);
4495 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
4496 struct rte_eth_rxtx_callback *cb = dev->pre_tx_burst_cbs[queue_id];
4498 if (unlikely(cb != NULL)) {
4500 nb_pkts = cb->fn.tx(port_id, queue_id, tx_pkts, nb_pkts,
4503 } while (cb != NULL);
4507 return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
4511 * Process a burst of output packets on a transmit queue of an Ethernet device.
4513 * The rte_eth_tx_prepare() function is invoked to prepare output packets to be
4514 * transmitted on the output queue *queue_id* of the Ethernet device designated
4516 * The *nb_pkts* parameter is the number of packets to be prepared which are
4517 * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
4518 * allocated from a pool created with rte_pktmbuf_pool_create().
4519 * For each packet to send, the rte_eth_tx_prepare() function performs
4520 * the following operations:
4522 * - Check if packet meets devices requirements for tx offloads.
4524 * - Check limitations about number of segments.
4526 * - Check additional requirements when debug is enabled.
4528 * - Update and/or reset required checksums when tx offload is set for packet.
4530 * Since this function can modify packet data, provided mbufs must be safely
4531 * writable (e.g. modified data cannot be in shared segment).
4533 * The rte_eth_tx_prepare() function returns the number of packets ready to be
4534 * sent. A return value equal to *nb_pkts* means that all packets are valid and
4535 * ready to be sent, otherwise stops processing on the first invalid packet and
4536 * leaves the rest packets untouched.
4538 * When this functionality is not implemented in the driver, all packets are
4539 * are returned untouched.
4542 * The port identifier of the Ethernet device.
4543 * The value must be a valid port id.
4545 * The index of the transmit queue through which output packets must be
4547 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4548 * to rte_eth_dev_configure().
4550 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
4551 * which contain the output packets.
4553 * The maximum number of packets to process.
4555 * The number of packets correct and ready to be sent. The return value can be
4556 * less than the value of the *tx_pkts* parameter when some packet doesn't
4557 * meet devices requirements with rte_errno set appropriately:
4558 * - EINVAL: offload flags are not correctly set
4559 * - ENOTSUP: the offload feature is not supported by the hardware
4563 #ifndef RTE_ETHDEV_TX_PREPARE_NOOP
4565 static inline uint16_t
4566 rte_eth_tx_prepare(uint16_t port_id, uint16_t queue_id,
4567 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4569 struct rte_eth_dev *dev;
4571 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4572 if (!rte_eth_dev_is_valid_port(port_id)) {
4573 RTE_ETHDEV_LOG(ERR, "Invalid TX port_id=%u\n", port_id);
4579 dev = &rte_eth_devices[port_id];
4581 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4582 if (queue_id >= dev->data->nb_tx_queues) {
4583 RTE_ETHDEV_LOG(ERR, "Invalid TX queue_id=%u\n", queue_id);
4589 if (!dev->tx_pkt_prepare)
4592 return (*dev->tx_pkt_prepare)(dev->data->tx_queues[queue_id],
4599 * Native NOOP operation for compilation targets which doesn't require any
4600 * preparations steps, and functional NOOP may introduce unnecessary performance
4603 * Generally this is not a good idea to turn it on globally and didn't should
4604 * be used if behavior of tx_preparation can change.
4607 static inline uint16_t
4608 rte_eth_tx_prepare(__rte_unused uint16_t port_id,
4609 __rte_unused uint16_t queue_id,
4610 __rte_unused struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4618 * Send any packets queued up for transmission on a port and HW queue
4620 * This causes an explicit flush of packets previously buffered via the
4621 * rte_eth_tx_buffer() function. It returns the number of packets successfully
4622 * sent to the NIC, and calls the error callback for any unsent packets. Unless
4623 * explicitly set up otherwise, the default callback simply frees the unsent
4624 * packets back to the owning mempool.
4627 * The port identifier of the Ethernet device.
4629 * The index of the transmit queue through which output packets must be
4631 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4632 * to rte_eth_dev_configure().
4634 * Buffer of packets to be transmit.
4636 * The number of packets successfully sent to the Ethernet device. The error
4637 * callback is called for any packets which could not be sent.
4639 static inline uint16_t
4640 rte_eth_tx_buffer_flush(uint16_t port_id, uint16_t queue_id,
4641 struct rte_eth_dev_tx_buffer *buffer)
4644 uint16_t to_send = buffer->length;
4649 sent = rte_eth_tx_burst(port_id, queue_id, buffer->pkts, to_send);
4653 /* All packets sent, or to be dealt with by callback below */
4654 if (unlikely(sent != to_send))
4655 buffer->error_callback(&buffer->pkts[sent],
4656 (uint16_t)(to_send - sent),
4657 buffer->error_userdata);
4663 * Buffer a single packet for future transmission on a port and queue
4665 * This function takes a single mbuf/packet and buffers it for later
4666 * transmission on the particular port and queue specified. Once the buffer is
4667 * full of packets, an attempt will be made to transmit all the buffered
4668 * packets. In case of error, where not all packets can be transmitted, a
4669 * callback is called with the unsent packets as a parameter. If no callback
4670 * is explicitly set up, the unsent packets are just freed back to the owning
4671 * mempool. The function returns the number of packets actually sent i.e.
4672 * 0 if no buffer flush occurred, otherwise the number of packets successfully
4676 * The port identifier of the Ethernet device.
4678 * The index of the transmit queue through which output packets must be
4680 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4681 * to rte_eth_dev_configure().
4683 * Buffer used to collect packets to be sent.
4685 * Pointer to the packet mbuf to be sent.
4687 * 0 = packet has been buffered for later transmission
4688 * N > 0 = packet has been buffered, and the buffer was subsequently flushed,
4689 * causing N packets to be sent, and the error callback to be called for
4692 static __rte_always_inline uint16_t
4693 rte_eth_tx_buffer(uint16_t port_id, uint16_t queue_id,
4694 struct rte_eth_dev_tx_buffer *buffer, struct rte_mbuf *tx_pkt)
4696 buffer->pkts[buffer->length++] = tx_pkt;
4697 if (buffer->length < buffer->size)
4700 return rte_eth_tx_buffer_flush(port_id, queue_id, buffer);
4707 #endif /* _RTE_ETHDEV_H_ */