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>
159 #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.
457 #define RTE_ETH_FLOW_UNKNOWN 0
458 #define RTE_ETH_FLOW_RAW 1
459 #define RTE_ETH_FLOW_IPV4 2
460 #define RTE_ETH_FLOW_FRAG_IPV4 3
461 #define RTE_ETH_FLOW_NONFRAG_IPV4_TCP 4
462 #define RTE_ETH_FLOW_NONFRAG_IPV4_UDP 5
463 #define RTE_ETH_FLOW_NONFRAG_IPV4_SCTP 6
464 #define RTE_ETH_FLOW_NONFRAG_IPV4_OTHER 7
465 #define RTE_ETH_FLOW_IPV6 8
466 #define RTE_ETH_FLOW_FRAG_IPV6 9
467 #define RTE_ETH_FLOW_NONFRAG_IPV6_TCP 10
468 #define RTE_ETH_FLOW_NONFRAG_IPV6_UDP 11
469 #define RTE_ETH_FLOW_NONFRAG_IPV6_SCTP 12
470 #define RTE_ETH_FLOW_NONFRAG_IPV6_OTHER 13
471 #define RTE_ETH_FLOW_L2_PAYLOAD 14
472 #define RTE_ETH_FLOW_IPV6_EX 15
473 #define RTE_ETH_FLOW_IPV6_TCP_EX 16
474 #define RTE_ETH_FLOW_IPV6_UDP_EX 17
475 #define RTE_ETH_FLOW_PORT 18
476 /**< Consider device port number as a flow differentiator */
477 #define RTE_ETH_FLOW_VXLAN 19 /**< VXLAN protocol based flow */
478 #define RTE_ETH_FLOW_GENEVE 20 /**< GENEVE protocol based flow */
479 #define RTE_ETH_FLOW_NVGRE 21 /**< NVGRE protocol based flow */
480 #define RTE_ETH_FLOW_VXLAN_GPE 22 /**< VXLAN-GPE protocol based flow */
481 #define RTE_ETH_FLOW_GTPU 23 /**< GTPU protocol based flow */
482 #define RTE_ETH_FLOW_MAX 24
485 * Below macros are defined for RSS offload types, they can be used to
486 * fill rte_eth_rss_conf.rss_hf or rte_flow_action_rss.types.
488 #define ETH_RSS_IPV4 (1ULL << 2)
489 #define ETH_RSS_FRAG_IPV4 (1ULL << 3)
490 #define ETH_RSS_NONFRAG_IPV4_TCP (1ULL << 4)
491 #define ETH_RSS_NONFRAG_IPV4_UDP (1ULL << 5)
492 #define ETH_RSS_NONFRAG_IPV4_SCTP (1ULL << 6)
493 #define ETH_RSS_NONFRAG_IPV4_OTHER (1ULL << 7)
494 #define ETH_RSS_IPV6 (1ULL << 8)
495 #define ETH_RSS_FRAG_IPV6 (1ULL << 9)
496 #define ETH_RSS_NONFRAG_IPV6_TCP (1ULL << 10)
497 #define ETH_RSS_NONFRAG_IPV6_UDP (1ULL << 11)
498 #define ETH_RSS_NONFRAG_IPV6_SCTP (1ULL << 12)
499 #define ETH_RSS_NONFRAG_IPV6_OTHER (1ULL << 13)
500 #define ETH_RSS_L2_PAYLOAD (1ULL << 14)
501 #define ETH_RSS_IPV6_EX (1ULL << 15)
502 #define ETH_RSS_IPV6_TCP_EX (1ULL << 16)
503 #define ETH_RSS_IPV6_UDP_EX (1ULL << 17)
504 #define ETH_RSS_PORT (1ULL << 18)
505 #define ETH_RSS_VXLAN (1ULL << 19)
506 #define ETH_RSS_GENEVE (1ULL << 20)
507 #define ETH_RSS_NVGRE (1ULL << 21)
508 #define ETH_RSS_GTPU (1ULL << 23)
511 * We use the following macros to combine with above ETH_RSS_* for
512 * more specific input set selection. These bits are defined starting
513 * from the high end of the 64 bits.
514 * Note: If we use above ETH_RSS_* without SRC/DST_ONLY, it represents
515 * both SRC and DST are taken into account. If SRC_ONLY and DST_ONLY of
516 * the same level are used simultaneously, it is the same case as none of
519 #define ETH_RSS_L3_SRC_ONLY (1ULL << 63)
520 #define ETH_RSS_L3_DST_ONLY (1ULL << 62)
521 #define ETH_RSS_L4_SRC_ONLY (1ULL << 61)
522 #define ETH_RSS_L4_DST_ONLY (1ULL << 60)
525 * For input set change of hash filter, if SRC_ONLY and DST_ONLY of
526 * the same level are used simultaneously, it is the same case as
527 * none of them are added.
530 * RSS types with SRC/DST_ONLY.
534 static inline uint64_t
535 rte_eth_rss_hf_refine(uint64_t rss_hf)
537 if ((rss_hf & ETH_RSS_L3_SRC_ONLY) && (rss_hf & ETH_RSS_L3_DST_ONLY))
538 rss_hf &= ~(ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY);
540 if ((rss_hf & ETH_RSS_L4_SRC_ONLY) && (rss_hf & ETH_RSS_L4_DST_ONLY))
541 rss_hf &= ~(ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY);
546 #define ETH_RSS_IP ( \
548 ETH_RSS_FRAG_IPV4 | \
549 ETH_RSS_NONFRAG_IPV4_OTHER | \
551 ETH_RSS_FRAG_IPV6 | \
552 ETH_RSS_NONFRAG_IPV6_OTHER | \
555 #define ETH_RSS_UDP ( \
556 ETH_RSS_NONFRAG_IPV4_UDP | \
557 ETH_RSS_NONFRAG_IPV6_UDP | \
560 #define ETH_RSS_TCP ( \
561 ETH_RSS_NONFRAG_IPV4_TCP | \
562 ETH_RSS_NONFRAG_IPV6_TCP | \
565 #define ETH_RSS_SCTP ( \
566 ETH_RSS_NONFRAG_IPV4_SCTP | \
567 ETH_RSS_NONFRAG_IPV6_SCTP)
569 #define ETH_RSS_TUNNEL ( \
574 /**< Mask of valid RSS hash protocols */
575 #define ETH_RSS_PROTO_MASK ( \
577 ETH_RSS_FRAG_IPV4 | \
578 ETH_RSS_NONFRAG_IPV4_TCP | \
579 ETH_RSS_NONFRAG_IPV4_UDP | \
580 ETH_RSS_NONFRAG_IPV4_SCTP | \
581 ETH_RSS_NONFRAG_IPV4_OTHER | \
583 ETH_RSS_FRAG_IPV6 | \
584 ETH_RSS_NONFRAG_IPV6_TCP | \
585 ETH_RSS_NONFRAG_IPV6_UDP | \
586 ETH_RSS_NONFRAG_IPV6_SCTP | \
587 ETH_RSS_NONFRAG_IPV6_OTHER | \
588 ETH_RSS_L2_PAYLOAD | \
590 ETH_RSS_IPV6_TCP_EX | \
591 ETH_RSS_IPV6_UDP_EX | \
598 * Definitions used for redirection table entry size.
599 * Some RSS RETA sizes may not be supported by some drivers, check the
600 * documentation or the description of relevant functions for more details.
602 #define ETH_RSS_RETA_SIZE_64 64
603 #define ETH_RSS_RETA_SIZE_128 128
604 #define ETH_RSS_RETA_SIZE_256 256
605 #define ETH_RSS_RETA_SIZE_512 512
606 #define RTE_RETA_GROUP_SIZE 64
608 /* Definitions used for VMDQ and DCB functionality */
609 #define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters. */
610 #define ETH_DCB_NUM_USER_PRIORITIES 8 /**< Maximum nb. of DCB priorities. */
611 #define ETH_VMDQ_DCB_NUM_QUEUES 128 /**< Maximum nb. of VMDQ DCB queues. */
612 #define ETH_DCB_NUM_QUEUES 128 /**< Maximum nb. of DCB queues. */
614 /* DCB capability defines */
615 #define ETH_DCB_PG_SUPPORT 0x00000001 /**< Priority Group(ETS) support. */
616 #define ETH_DCB_PFC_SUPPORT 0x00000002 /**< Priority Flow Control support. */
618 /* Definitions used for VLAN Offload functionality */
619 #define ETH_VLAN_STRIP_OFFLOAD 0x0001 /**< VLAN Strip On/Off */
620 #define ETH_VLAN_FILTER_OFFLOAD 0x0002 /**< VLAN Filter On/Off */
621 #define ETH_VLAN_EXTEND_OFFLOAD 0x0004 /**< VLAN Extend On/Off */
622 #define ETH_QINQ_STRIP_OFFLOAD 0x0008 /**< QINQ Strip On/Off */
624 /* Definitions used for mask VLAN setting */
625 #define ETH_VLAN_STRIP_MASK 0x0001 /**< VLAN Strip setting mask */
626 #define ETH_VLAN_FILTER_MASK 0x0002 /**< VLAN Filter setting mask*/
627 #define ETH_VLAN_EXTEND_MASK 0x0004 /**< VLAN Extend setting mask*/
628 #define ETH_QINQ_STRIP_MASK 0x0008 /**< QINQ Strip setting mask */
629 #define ETH_VLAN_ID_MAX 0x0FFF /**< VLAN ID is in lower 12 bits*/
631 /* Definitions used for receive MAC address */
632 #define ETH_NUM_RECEIVE_MAC_ADDR 128 /**< Maximum nb. of receive mac addr. */
634 /* Definitions used for unicast hash */
635 #define ETH_VMDQ_NUM_UC_HASH_ARRAY 128 /**< Maximum nb. of UC hash array. */
637 /* Definitions used for VMDQ pool rx mode setting */
638 #define ETH_VMDQ_ACCEPT_UNTAG 0x0001 /**< accept untagged packets. */
639 #define ETH_VMDQ_ACCEPT_HASH_MC 0x0002 /**< accept packets in multicast table . */
640 #define ETH_VMDQ_ACCEPT_HASH_UC 0x0004 /**< accept packets in unicast table. */
641 #define ETH_VMDQ_ACCEPT_BROADCAST 0x0008 /**< accept broadcast packets. */
642 #define ETH_VMDQ_ACCEPT_MULTICAST 0x0010 /**< multicast promiscuous. */
644 /** Maximum nb. of vlan per mirror rule */
645 #define ETH_MIRROR_MAX_VLANS 64
647 #define ETH_MIRROR_VIRTUAL_POOL_UP 0x01 /**< Virtual Pool uplink Mirroring. */
648 #define ETH_MIRROR_UPLINK_PORT 0x02 /**< Uplink Port Mirroring. */
649 #define ETH_MIRROR_DOWNLINK_PORT 0x04 /**< Downlink Port Mirroring. */
650 #define ETH_MIRROR_VLAN 0x08 /**< VLAN Mirroring. */
651 #define ETH_MIRROR_VIRTUAL_POOL_DOWN 0x10 /**< Virtual Pool downlink Mirroring. */
654 * A structure used to configure VLAN traffic mirror of an Ethernet port.
656 struct rte_eth_vlan_mirror {
657 uint64_t vlan_mask; /**< mask for valid VLAN ID. */
658 /** VLAN ID list for vlan mirroring. */
659 uint16_t vlan_id[ETH_MIRROR_MAX_VLANS];
663 * A structure used to configure traffic mirror of an Ethernet port.
665 struct rte_eth_mirror_conf {
666 uint8_t rule_type; /**< Mirroring rule type */
667 uint8_t dst_pool; /**< Destination pool for this mirror rule. */
668 uint64_t pool_mask; /**< Bitmap of pool for pool mirroring */
669 /** VLAN ID setting for VLAN mirroring. */
670 struct rte_eth_vlan_mirror vlan;
674 * A structure used to configure 64 entries of Redirection Table of the
675 * Receive Side Scaling (RSS) feature of an Ethernet port. To configure
676 * more than 64 entries supported by hardware, an array of this structure
679 struct rte_eth_rss_reta_entry64 {
681 /**< Mask bits indicate which entries need to be updated/queried. */
682 uint16_t reta[RTE_RETA_GROUP_SIZE];
683 /**< Group of 64 redirection table entries. */
687 * This enum indicates the possible number of traffic classes
688 * in DCB configurations
690 enum rte_eth_nb_tcs {
691 ETH_4_TCS = 4, /**< 4 TCs with DCB. */
692 ETH_8_TCS = 8 /**< 8 TCs with DCB. */
696 * This enum indicates the possible number of queue pools
697 * in VMDQ configurations.
699 enum rte_eth_nb_pools {
700 ETH_8_POOLS = 8, /**< 8 VMDq pools. */
701 ETH_16_POOLS = 16, /**< 16 VMDq pools. */
702 ETH_32_POOLS = 32, /**< 32 VMDq pools. */
703 ETH_64_POOLS = 64 /**< 64 VMDq pools. */
706 /* This structure may be extended in future. */
707 struct rte_eth_dcb_rx_conf {
708 enum rte_eth_nb_tcs nb_tcs; /**< Possible DCB TCs, 4 or 8 TCs */
709 /** Traffic class each UP mapped to. */
710 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
713 struct rte_eth_vmdq_dcb_tx_conf {
714 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools. */
715 /** Traffic class each UP mapped to. */
716 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
719 struct rte_eth_dcb_tx_conf {
720 enum rte_eth_nb_tcs nb_tcs; /**< Possible DCB TCs, 4 or 8 TCs. */
721 /** Traffic class each UP mapped to. */
722 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
725 struct rte_eth_vmdq_tx_conf {
726 enum rte_eth_nb_pools nb_queue_pools; /**< VMDq mode, 64 pools. */
730 * A structure used to configure the VMDQ+DCB feature
731 * of an Ethernet port.
733 * Using this feature, packets are routed to a pool of queues, based
734 * on the vlan id in the vlan tag, and then to a specific queue within
735 * that pool, using the user priority vlan tag field.
737 * A default pool may be used, if desired, to route all traffic which
738 * does not match the vlan filter rules.
740 struct rte_eth_vmdq_dcb_conf {
741 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
742 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
743 uint8_t default_pool; /**< The default pool, if applicable */
744 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
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. */
749 uint8_t dcb_tc[ETH_DCB_NUM_USER_PRIORITIES];
750 /**< Selects a queue in a pool */
754 * A structure used to configure the VMDQ feature of an Ethernet port when
755 * not combined with the DCB feature.
757 * Using this feature, packets are routed to a pool of queues. By default,
758 * the pool selection is based on the MAC address, the vlan id in the
759 * vlan tag as specified in the pool_map array.
760 * Passing the ETH_VMDQ_ACCEPT_UNTAG in the rx_mode field allows pool
761 * selection using only the MAC address. MAC address to pool mapping is done
762 * using the rte_eth_dev_mac_addr_add function, with the pool parameter
763 * corresponding to the pool id.
765 * Queue selection within the selected pool will be done using RSS when
766 * it is enabled or revert to the first queue of the pool if not.
768 * A default pool may be used, if desired, to route all traffic which
769 * does not match the vlan filter rules or any pool MAC address.
771 struct rte_eth_vmdq_rx_conf {
772 enum rte_eth_nb_pools nb_queue_pools; /**< VMDq only mode, 8 or 64 pools */
773 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
774 uint8_t default_pool; /**< The default pool, if applicable */
775 uint8_t enable_loop_back; /**< Enable VT loop back */
776 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
777 uint32_t rx_mode; /**< Flags from ETH_VMDQ_ACCEPT_* */
779 uint16_t vlan_id; /**< The vlan id of the received frame */
780 uint64_t pools; /**< Bitmask of pools for packet rx */
781 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
785 * A structure used to configure the TX features of an Ethernet port.
787 struct rte_eth_txmode {
788 enum rte_eth_tx_mq_mode mq_mode; /**< TX multi-queues mode. */
790 * Per-port Tx offloads to be set using DEV_TX_OFFLOAD_* flags.
791 * Only offloads set on tx_offload_capa field on rte_eth_dev_info
792 * structure are allowed to be set.
796 /* For i40e specifically */
799 uint8_t hw_vlan_reject_tagged : 1,
800 /**< If set, reject sending out tagged pkts */
801 hw_vlan_reject_untagged : 1,
802 /**< If set, reject sending out untagged pkts */
803 hw_vlan_insert_pvid : 1;
804 /**< If set, enable port based VLAN insertion */
808 * A structure used to configure an RX ring of an Ethernet port.
810 struct rte_eth_rxconf {
811 struct rte_eth_thresh rx_thresh; /**< RX ring threshold registers. */
812 uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
813 uint8_t rx_drop_en; /**< Drop packets if no descriptors are available. */
814 uint8_t rx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */
816 * Per-queue Rx offloads to be set using DEV_RX_OFFLOAD_* flags.
817 * Only offloads set on rx_queue_offload_capa or rx_offload_capa
818 * fields on rte_eth_dev_info structure are allowed to be set.
824 * A structure used to configure a TX ring of an Ethernet port.
826 struct rte_eth_txconf {
827 struct rte_eth_thresh tx_thresh; /**< TX ring threshold registers. */
828 uint16_t tx_rs_thresh; /**< Drives the setting of RS bit on TXDs. */
829 uint16_t tx_free_thresh; /**< Start freeing TX buffers if there are
830 less free descriptors than this value. */
832 uint8_t tx_deferred_start; /**< Do not start queue with rte_eth_dev_start(). */
834 * Per-queue Tx offloads to be set using DEV_TX_OFFLOAD_* flags.
835 * Only offloads set on tx_queue_offload_capa or tx_offload_capa
836 * fields on rte_eth_dev_info structure are allowed to be set.
842 * A structure contains information about HW descriptor ring limitations.
844 struct rte_eth_desc_lim {
845 uint16_t nb_max; /**< Max allowed number of descriptors. */
846 uint16_t nb_min; /**< Min allowed number of descriptors. */
847 uint16_t nb_align; /**< Number of descriptors should be aligned to. */
850 * Max allowed number of segments per whole packet.
852 * - For TSO packet this is the total number of data descriptors allowed
855 * @see nb_mtu_seg_max
860 * Max number of segments per one MTU.
862 * - For non-TSO packet, this is the maximum allowed number of segments
863 * in a single transmit packet.
865 * - For TSO packet each segment within the TSO may span up to this
870 uint16_t nb_mtu_seg_max;
874 * This enum indicates the flow control mode
876 enum rte_eth_fc_mode {
877 RTE_FC_NONE = 0, /**< Disable flow control. */
878 RTE_FC_RX_PAUSE, /**< RX pause frame, enable flowctrl on TX side. */
879 RTE_FC_TX_PAUSE, /**< TX pause frame, enable flowctrl on RX side. */
880 RTE_FC_FULL /**< Enable flow control on both side. */
884 * A structure used to configure Ethernet flow control parameter.
885 * These parameters will be configured into the register of the NIC.
886 * Please refer to the corresponding data sheet for proper value.
888 struct rte_eth_fc_conf {
889 uint32_t high_water; /**< High threshold value to trigger XOFF */
890 uint32_t low_water; /**< Low threshold value to trigger XON */
891 uint16_t pause_time; /**< Pause quota in the Pause frame */
892 uint16_t send_xon; /**< Is XON frame need be sent */
893 enum rte_eth_fc_mode mode; /**< Link flow control mode */
894 uint8_t mac_ctrl_frame_fwd; /**< Forward MAC control frames */
895 uint8_t autoneg; /**< Use Pause autoneg */
899 * A structure used to configure Ethernet priority flow control parameter.
900 * These parameters will be configured into the register of the NIC.
901 * Please refer to the corresponding data sheet for proper value.
903 struct rte_eth_pfc_conf {
904 struct rte_eth_fc_conf fc; /**< General flow control parameter. */
905 uint8_t priority; /**< VLAN User Priority. */
911 enum rte_eth_tunnel_type {
912 RTE_TUNNEL_TYPE_NONE = 0,
913 RTE_TUNNEL_TYPE_VXLAN,
914 RTE_TUNNEL_TYPE_GENEVE,
915 RTE_TUNNEL_TYPE_TEREDO,
916 RTE_TUNNEL_TYPE_NVGRE,
917 RTE_TUNNEL_TYPE_IP_IN_GRE,
918 RTE_L2_TUNNEL_TYPE_E_TAG,
919 RTE_TUNNEL_TYPE_VXLAN_GPE,
923 /* Deprecated API file for rte_eth_dev_filter_* functions */
924 #include "rte_eth_ctrl.h"
927 * Memory space that can be configured to store Flow Director filters
928 * in the board memory.
930 enum rte_fdir_pballoc_type {
931 RTE_FDIR_PBALLOC_64K = 0, /**< 64k. */
932 RTE_FDIR_PBALLOC_128K, /**< 128k. */
933 RTE_FDIR_PBALLOC_256K, /**< 256k. */
937 * Select report mode of FDIR hash information in RX descriptors.
939 enum rte_fdir_status_mode {
940 RTE_FDIR_NO_REPORT_STATUS = 0, /**< Never report FDIR hash. */
941 RTE_FDIR_REPORT_STATUS, /**< Only report FDIR hash for matching pkts. */
942 RTE_FDIR_REPORT_STATUS_ALWAYS, /**< Always report FDIR hash. */
946 * A structure used to configure the Flow Director (FDIR) feature
947 * of an Ethernet port.
949 * If mode is RTE_FDIR_MODE_NONE, the pballoc value is ignored.
951 struct rte_fdir_conf {
952 enum rte_fdir_mode mode; /**< Flow Director mode. */
953 enum rte_fdir_pballoc_type pballoc; /**< Space for FDIR filters. */
954 enum rte_fdir_status_mode status; /**< How to report FDIR hash. */
955 /** RX queue of packets matching a "drop" filter in perfect mode. */
957 struct rte_eth_fdir_masks mask;
958 struct rte_eth_fdir_flex_conf flex_conf;
959 /**< Flex payload configuration. */
963 * UDP tunneling configuration.
964 * Used to config the UDP port for a type of tunnel.
965 * NICs need the UDP port to identify the tunnel type.
966 * Normally a type of tunnel has a default UDP port, this structure can be used
967 * in case if the users want to change or support more UDP port.
969 struct rte_eth_udp_tunnel {
970 uint16_t udp_port; /**< UDP port used for the tunnel. */
971 uint8_t prot_type; /**< Tunnel type. Defined in rte_eth_tunnel_type. */
975 * A structure used to enable/disable specific device interrupts.
977 struct rte_intr_conf {
978 /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
980 /** enable/disable rxq interrupt. 0 (default) - disable, 1 enable */
982 /** enable/disable rmv interrupt. 0 (default) - disable, 1 enable */
987 * A structure used to configure an Ethernet port.
988 * Depending upon the RX multi-queue mode, extra advanced
989 * configuration settings may be needed.
991 struct rte_eth_conf {
992 uint32_t link_speeds; /**< bitmap of ETH_LINK_SPEED_XXX of speeds to be
993 used. ETH_LINK_SPEED_FIXED disables link
994 autonegotiation, and a unique speed shall be
995 set. Otherwise, the bitmap defines the set of
996 speeds to be advertised. If the special value
997 ETH_LINK_SPEED_AUTONEG (0) is used, all speeds
998 supported are advertised. */
999 struct rte_eth_rxmode rxmode; /**< Port RX configuration. */
1000 struct rte_eth_txmode txmode; /**< Port TX configuration. */
1001 uint32_t lpbk_mode; /**< Loopback operation mode. By default the value
1002 is 0, meaning the loopback mode is disabled.
1003 Read the datasheet of given ethernet controller
1004 for details. The possible values of this field
1005 are defined in implementation of each driver. */
1007 struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
1008 struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
1009 /**< Port vmdq+dcb configuration. */
1010 struct rte_eth_dcb_rx_conf dcb_rx_conf;
1011 /**< Port dcb RX configuration. */
1012 struct rte_eth_vmdq_rx_conf vmdq_rx_conf;
1013 /**< Port vmdq RX configuration. */
1014 } rx_adv_conf; /**< Port RX filtering configuration. */
1016 struct rte_eth_vmdq_dcb_tx_conf vmdq_dcb_tx_conf;
1017 /**< Port vmdq+dcb TX configuration. */
1018 struct rte_eth_dcb_tx_conf dcb_tx_conf;
1019 /**< Port dcb TX configuration. */
1020 struct rte_eth_vmdq_tx_conf vmdq_tx_conf;
1021 /**< Port vmdq TX configuration. */
1022 } tx_adv_conf; /**< Port TX DCB configuration (union). */
1023 /** Currently,Priority Flow Control(PFC) are supported,if DCB with PFC
1024 is needed,and the variable must be set ETH_DCB_PFC_SUPPORT. */
1025 uint32_t dcb_capability_en;
1026 struct rte_fdir_conf fdir_conf; /**< FDIR configuration. DEPRECATED */
1027 struct rte_intr_conf intr_conf; /**< Interrupt mode configuration. */
1031 * RX offload capabilities of a device.
1033 #define DEV_RX_OFFLOAD_VLAN_STRIP 0x00000001
1034 #define DEV_RX_OFFLOAD_IPV4_CKSUM 0x00000002
1035 #define DEV_RX_OFFLOAD_UDP_CKSUM 0x00000004
1036 #define DEV_RX_OFFLOAD_TCP_CKSUM 0x00000008
1037 #define DEV_RX_OFFLOAD_TCP_LRO 0x00000010
1038 #define DEV_RX_OFFLOAD_QINQ_STRIP 0x00000020
1039 #define DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000040
1040 #define DEV_RX_OFFLOAD_MACSEC_STRIP 0x00000080
1041 #define DEV_RX_OFFLOAD_HEADER_SPLIT 0x00000100
1042 #define DEV_RX_OFFLOAD_VLAN_FILTER 0x00000200
1043 #define DEV_RX_OFFLOAD_VLAN_EXTEND 0x00000400
1044 #define DEV_RX_OFFLOAD_JUMBO_FRAME 0x00000800
1045 #define DEV_RX_OFFLOAD_SCATTER 0x00002000
1046 #define DEV_RX_OFFLOAD_TIMESTAMP 0x00004000
1047 #define DEV_RX_OFFLOAD_SECURITY 0x00008000
1048 #define DEV_RX_OFFLOAD_KEEP_CRC 0x00010000
1049 #define DEV_RX_OFFLOAD_SCTP_CKSUM 0x00020000
1050 #define DEV_RX_OFFLOAD_OUTER_UDP_CKSUM 0x00040000
1052 #define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
1053 DEV_RX_OFFLOAD_UDP_CKSUM | \
1054 DEV_RX_OFFLOAD_TCP_CKSUM)
1055 #define DEV_RX_OFFLOAD_VLAN (DEV_RX_OFFLOAD_VLAN_STRIP | \
1056 DEV_RX_OFFLOAD_VLAN_FILTER | \
1057 DEV_RX_OFFLOAD_VLAN_EXTEND | \
1058 DEV_RX_OFFLOAD_QINQ_STRIP)
1061 * If new Rx offload capabilities are defined, they also must be
1062 * mentioned in rte_rx_offload_names in rte_ethdev.c file.
1066 * TX offload capabilities of a device.
1068 #define DEV_TX_OFFLOAD_VLAN_INSERT 0x00000001
1069 #define DEV_TX_OFFLOAD_IPV4_CKSUM 0x00000002
1070 #define DEV_TX_OFFLOAD_UDP_CKSUM 0x00000004
1071 #define DEV_TX_OFFLOAD_TCP_CKSUM 0x00000008
1072 #define DEV_TX_OFFLOAD_SCTP_CKSUM 0x00000010
1073 #define DEV_TX_OFFLOAD_TCP_TSO 0x00000020
1074 #define DEV_TX_OFFLOAD_UDP_TSO 0x00000040
1075 #define DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000080 /**< Used for tunneling packet. */
1076 #define DEV_TX_OFFLOAD_QINQ_INSERT 0x00000100
1077 #define DEV_TX_OFFLOAD_VXLAN_TNL_TSO 0x00000200 /**< Used for tunneling packet. */
1078 #define DEV_TX_OFFLOAD_GRE_TNL_TSO 0x00000400 /**< Used for tunneling packet. */
1079 #define DEV_TX_OFFLOAD_IPIP_TNL_TSO 0x00000800 /**< Used for tunneling packet. */
1080 #define DEV_TX_OFFLOAD_GENEVE_TNL_TSO 0x00001000 /**< Used for tunneling packet. */
1081 #define DEV_TX_OFFLOAD_MACSEC_INSERT 0x00002000
1082 #define DEV_TX_OFFLOAD_MT_LOCKFREE 0x00004000
1083 /**< Multiple threads can invoke rte_eth_tx_burst() concurrently on the same
1084 * tx queue without SW lock.
1086 #define DEV_TX_OFFLOAD_MULTI_SEGS 0x00008000
1087 /**< Device supports multi segment send. */
1088 #define DEV_TX_OFFLOAD_MBUF_FAST_FREE 0x00010000
1089 /**< Device supports optimization for fast release of mbufs.
1090 * When set application must guarantee that per-queue all mbufs comes from
1091 * the same mempool and has refcnt = 1.
1093 #define DEV_TX_OFFLOAD_SECURITY 0x00020000
1095 * Device supports generic UDP tunneled packet TSO.
1096 * Application must set PKT_TX_TUNNEL_UDP and other mbuf fields required
1099 #define DEV_TX_OFFLOAD_UDP_TNL_TSO 0x00040000
1101 * Device supports generic IP tunneled packet TSO.
1102 * Application must set PKT_TX_TUNNEL_IP and other mbuf fields required
1105 #define DEV_TX_OFFLOAD_IP_TNL_TSO 0x00080000
1106 /** Device supports outer UDP checksum */
1107 #define DEV_TX_OFFLOAD_OUTER_UDP_CKSUM 0x00100000
1109 * Device supports match on metadata Tx offload..
1110 * Application must set PKT_TX_METADATA and mbuf metadata field.
1112 #define DEV_TX_OFFLOAD_MATCH_METADATA 0x00200000
1114 #define RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP 0x00000001
1115 /**< Device supports Rx queue setup after device started*/
1116 #define RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP 0x00000002
1117 /**< Device supports Tx queue setup after device started*/
1120 * If new Tx offload capabilities are defined, they also must be
1121 * mentioned in rte_tx_offload_names in rte_ethdev.c file.
1125 * Fallback default preferred Rx/Tx port parameters.
1126 * These are used if an application requests default parameters
1127 * but the PMD does not provide preferred values.
1129 #define RTE_ETH_DEV_FALLBACK_RX_RINGSIZE 512
1130 #define RTE_ETH_DEV_FALLBACK_TX_RINGSIZE 512
1131 #define RTE_ETH_DEV_FALLBACK_RX_NBQUEUES 1
1132 #define RTE_ETH_DEV_FALLBACK_TX_NBQUEUES 1
1135 * Preferred Rx/Tx port parameters.
1136 * There are separate instances of this structure for transmission
1137 * and reception respectively.
1139 struct rte_eth_dev_portconf {
1140 uint16_t burst_size; /**< Device-preferred burst size */
1141 uint16_t ring_size; /**< Device-preferred size of queue rings */
1142 uint16_t nb_queues; /**< Device-preferred number of queues */
1146 * Default values for switch domain id when ethdev does not support switch
1147 * domain definitions.
1149 #define RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID (0)
1152 * Ethernet device associated switch information
1154 struct rte_eth_switch_info {
1155 const char *name; /**< switch name */
1156 uint16_t domain_id; /**< switch domain id */
1159 * mapping to the devices physical switch port as enumerated from the
1160 * perspective of the embedded interconnect/switch. For SR-IOV enabled
1161 * device this may correspond to the VF_ID of each virtual function,
1162 * but each driver should explicitly define the mapping of switch
1163 * port identifier to that physical interconnect/switch
1168 * Ethernet device information
1172 * A structure used to retrieve the contextual information of
1173 * an Ethernet device, such as the controlling driver of the
1176 struct rte_eth_dev_info {
1177 struct rte_device *device; /** Generic device information */
1178 const char *driver_name; /**< Device Driver name. */
1179 unsigned int if_index; /**< Index to bound host interface, or 0 if none.
1180 Use if_indextoname() to translate into an interface name. */
1181 uint16_t min_mtu; /**< Minimum MTU allowed */
1182 uint16_t max_mtu; /**< Maximum MTU allowed */
1183 const uint32_t *dev_flags; /**< Device flags */
1184 uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */
1185 uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */
1186 uint16_t max_rx_queues; /**< Maximum number of RX queues. */
1187 uint16_t max_tx_queues; /**< Maximum number of TX queues. */
1188 uint32_t max_mac_addrs; /**< Maximum number of MAC addresses. */
1189 uint32_t max_hash_mac_addrs;
1190 /** Maximum number of hash MAC addresses for MTA and UTA. */
1191 uint16_t max_vfs; /**< Maximum number of VFs. */
1192 uint16_t max_vmdq_pools; /**< Maximum number of VMDq pools. */
1193 uint64_t rx_offload_capa;
1194 /**< All RX offload capabilities including all per-queue ones */
1195 uint64_t tx_offload_capa;
1196 /**< All TX offload capabilities including all per-queue ones */
1197 uint64_t rx_queue_offload_capa;
1198 /**< Device per-queue RX offload capabilities. */
1199 uint64_t tx_queue_offload_capa;
1200 /**< Device per-queue TX offload capabilities. */
1202 /**< Device redirection table size, the total number of entries. */
1203 uint8_t hash_key_size; /**< Hash key size in bytes */
1204 /** Bit mask of RSS offloads, the bit offset also means flow type */
1205 uint64_t flow_type_rss_offloads;
1206 struct rte_eth_rxconf default_rxconf; /**< Default RX configuration */
1207 struct rte_eth_txconf default_txconf; /**< Default TX configuration */
1208 uint16_t vmdq_queue_base; /**< First queue ID for VMDQ pools. */
1209 uint16_t vmdq_queue_num; /**< Queue number for VMDQ pools. */
1210 uint16_t vmdq_pool_base; /**< First ID of VMDQ pools. */
1211 struct rte_eth_desc_lim rx_desc_lim; /**< RX descriptors limits */
1212 struct rte_eth_desc_lim tx_desc_lim; /**< TX descriptors limits */
1213 uint32_t speed_capa; /**< Supported speeds bitmap (ETH_LINK_SPEED_). */
1214 /** Configured number of rx/tx queues */
1215 uint16_t nb_rx_queues; /**< Number of RX queues. */
1216 uint16_t nb_tx_queues; /**< Number of TX queues. */
1217 /** Rx parameter recommendations */
1218 struct rte_eth_dev_portconf default_rxportconf;
1219 /** Tx parameter recommendations */
1220 struct rte_eth_dev_portconf default_txportconf;
1221 /** Generic device capabilities (RTE_ETH_DEV_CAPA_). */
1224 * Switching information for ports on a device with a
1225 * embedded managed interconnect/switch.
1227 struct rte_eth_switch_info switch_info;
1231 * Ethernet device RX queue information structure.
1232 * Used to retrieve information about configured queue.
1234 struct rte_eth_rxq_info {
1235 struct rte_mempool *mp; /**< mempool used by that queue. */
1236 struct rte_eth_rxconf conf; /**< queue config parameters. */
1237 uint8_t scattered_rx; /**< scattered packets RX supported. */
1238 uint16_t nb_desc; /**< configured number of RXDs. */
1239 } __rte_cache_min_aligned;
1242 * Ethernet device TX queue information structure.
1243 * Used to retrieve information about configured queue.
1245 struct rte_eth_txq_info {
1246 struct rte_eth_txconf conf; /**< queue config parameters. */
1247 uint16_t nb_desc; /**< configured number of TXDs. */
1248 } __rte_cache_min_aligned;
1251 * Burst mode types, values can be ORed to define the burst mode of a driver.
1253 enum rte_eth_burst_mode_option {
1254 RTE_ETH_BURST_SCALAR = (1 << 0),
1255 RTE_ETH_BURST_VECTOR = (1 << 1),
1257 /**< bits[15:2] are reserved for each vector type */
1258 RTE_ETH_BURST_ALTIVEC = (1 << 2),
1259 RTE_ETH_BURST_NEON = (1 << 3),
1260 RTE_ETH_BURST_SSE = (1 << 4),
1261 RTE_ETH_BURST_AVX2 = (1 << 5),
1262 RTE_ETH_BURST_AVX512 = (1 << 6),
1264 RTE_ETH_BURST_SCATTERED = (1 << 16), /**< Support scattered packets */
1265 RTE_ETH_BURST_BULK_ALLOC = (1 << 17), /**< Support mbuf bulk alloc */
1266 RTE_ETH_BURST_SIMPLE = (1 << 18),
1268 RTE_ETH_BURST_PER_QUEUE = (1 << 19), /**< Support per queue burst */
1272 * Ethernet device RX/TX queue packet burst mode information structure.
1273 * Used to retrieve information about packet burst mode setting.
1275 struct rte_eth_burst_mode {
1279 /** Maximum name length for extended statistics counters */
1280 #define RTE_ETH_XSTATS_NAME_SIZE 64
1283 * An Ethernet device extended statistic structure
1285 * This structure is used by rte_eth_xstats_get() to provide
1286 * statistics that are not provided in the generic *rte_eth_stats*
1288 * It maps a name id, corresponding to an index in the array returned
1289 * by rte_eth_xstats_get_names(), to a statistic value.
1291 struct rte_eth_xstat {
1292 uint64_t id; /**< The index in xstats name array. */
1293 uint64_t value; /**< The statistic counter value. */
1297 * A name element for extended statistics.
1299 * An array of this structure is returned by rte_eth_xstats_get_names().
1300 * It lists the names of extended statistics for a PMD. The *rte_eth_xstat*
1301 * structure references these names by their array index.
1303 struct rte_eth_xstat_name {
1304 char name[RTE_ETH_XSTATS_NAME_SIZE]; /**< The statistic name. */
1307 #define ETH_DCB_NUM_TCS 8
1308 #define ETH_MAX_VMDQ_POOL 64
1311 * A structure used to get the information of queue and
1312 * TC mapping on both TX and RX paths.
1314 struct rte_eth_dcb_tc_queue_mapping {
1315 /** rx queues assigned to tc per Pool */
1319 } tc_rxq[ETH_MAX_VMDQ_POOL][ETH_DCB_NUM_TCS];
1320 /** rx queues assigned to tc per Pool */
1324 } tc_txq[ETH_MAX_VMDQ_POOL][ETH_DCB_NUM_TCS];
1328 * A structure used to get the information of DCB.
1329 * It includes TC UP mapping and queue TC mapping.
1331 struct rte_eth_dcb_info {
1332 uint8_t nb_tcs; /**< number of TCs */
1333 uint8_t prio_tc[ETH_DCB_NUM_USER_PRIORITIES]; /**< Priority to tc */
1334 uint8_t tc_bws[ETH_DCB_NUM_TCS]; /**< TX BW percentage for each TC */
1335 /** rx queues assigned to tc */
1336 struct rte_eth_dcb_tc_queue_mapping tc_queue;
1339 #define RTE_ETH_ALL RTE_MAX_ETHPORTS
1341 /* Macros to check for valid port */
1342 #define RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, retval) do { \
1343 if (!rte_eth_dev_is_valid_port(port_id)) { \
1344 RTE_ETHDEV_LOG(ERR, "Invalid port_id=%u\n", port_id); \
1349 #define RTE_ETH_VALID_PORTID_OR_RET(port_id) do { \
1350 if (!rte_eth_dev_is_valid_port(port_id)) { \
1351 RTE_ETHDEV_LOG(ERR, "Invalid port_id=%u\n", port_id); \
1357 * l2 tunnel configuration.
1360 /**< l2 tunnel enable mask */
1361 #define ETH_L2_TUNNEL_ENABLE_MASK 0x00000001
1362 /**< l2 tunnel insertion mask */
1363 #define ETH_L2_TUNNEL_INSERTION_MASK 0x00000002
1364 /**< l2 tunnel stripping mask */
1365 #define ETH_L2_TUNNEL_STRIPPING_MASK 0x00000004
1366 /**< l2 tunnel forwarding mask */
1367 #define ETH_L2_TUNNEL_FORWARDING_MASK 0x00000008
1370 * Function type used for RX packet processing packet callbacks.
1372 * The callback function is called on RX with a burst of packets that have
1373 * been received on the given port and queue.
1376 * The Ethernet port on which RX is being performed.
1378 * The queue on the Ethernet port which is being used to receive the packets.
1380 * The burst of packets that have just been received.
1382 * The number of packets in the burst pointed to by "pkts".
1384 * The max number of packets that can be stored in the "pkts" array.
1386 * The arbitrary user parameter passed in by the application when the callback
1387 * was originally configured.
1389 * The number of packets returned to the user.
1391 typedef uint16_t (*rte_rx_callback_fn)(uint16_t port_id, uint16_t queue,
1392 struct rte_mbuf *pkts[], uint16_t nb_pkts, uint16_t max_pkts,
1396 * Function type used for TX packet processing packet callbacks.
1398 * The callback function is called on TX with a burst of packets immediately
1399 * before the packets are put onto the hardware queue for transmission.
1402 * The Ethernet port on which TX is being performed.
1404 * The queue on the Ethernet port which is being used to transmit the packets.
1406 * The burst of packets that are about to be transmitted.
1408 * The number of packets in the burst pointed to by "pkts".
1410 * The arbitrary user parameter passed in by the application when the callback
1411 * was originally configured.
1413 * The number of packets to be written to the NIC.
1415 typedef uint16_t (*rte_tx_callback_fn)(uint16_t port_id, uint16_t queue,
1416 struct rte_mbuf *pkts[], uint16_t nb_pkts, void *user_param);
1419 * Possible states of an ethdev port.
1421 enum rte_eth_dev_state {
1422 /** Device is unused before being probed. */
1423 RTE_ETH_DEV_UNUSED = 0,
1424 /** Device is attached when allocated in probing. */
1425 RTE_ETH_DEV_ATTACHED,
1426 /** Device is in removed state when plug-out is detected. */
1427 RTE_ETH_DEV_REMOVED,
1430 struct rte_eth_dev_sriov {
1431 uint8_t active; /**< SRIOV is active with 16, 32 or 64 pools */
1432 uint8_t nb_q_per_pool; /**< rx queue number per pool */
1433 uint16_t def_vmdq_idx; /**< Default pool num used for PF */
1434 uint16_t def_pool_q_idx; /**< Default pool queue start reg index */
1436 #define RTE_ETH_DEV_SRIOV(dev) ((dev)->data->sriov)
1438 #define RTE_ETH_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
1440 #define RTE_ETH_DEV_NO_OWNER 0
1442 #define RTE_ETH_MAX_OWNER_NAME_LEN 64
1444 struct rte_eth_dev_owner {
1445 uint64_t id; /**< The owner unique identifier. */
1446 char name[RTE_ETH_MAX_OWNER_NAME_LEN]; /**< The owner name. */
1450 * Port is released (i.e. totally freed and data erased) on close.
1451 * Temporary flag for PMD migration to new rte_eth_dev_close() behaviour.
1453 #define RTE_ETH_DEV_CLOSE_REMOVE 0x0001
1454 /** Device supports link state interrupt */
1455 #define RTE_ETH_DEV_INTR_LSC 0x0002
1456 /** Device is a bonded slave */
1457 #define RTE_ETH_DEV_BONDED_SLAVE 0x0004
1458 /** Device supports device removal interrupt */
1459 #define RTE_ETH_DEV_INTR_RMV 0x0008
1460 /** Device is port representor */
1461 #define RTE_ETH_DEV_REPRESENTOR 0x0010
1462 /** Device does not support MAC change after started */
1463 #define RTE_ETH_DEV_NOLIVE_MAC_ADDR 0x0020
1466 * Iterates over valid ethdev ports owned by a specific owner.
1469 * The id of the next possible valid owned port.
1471 * The owner identifier.
1472 * RTE_ETH_DEV_NO_OWNER means iterate over all valid ownerless ports.
1474 * Next valid port id owned by owner_id, RTE_MAX_ETHPORTS if there is none.
1476 uint64_t rte_eth_find_next_owned_by(uint16_t port_id,
1477 const uint64_t owner_id);
1480 * Macro to iterate over all enabled ethdev ports owned by a specific owner.
1482 #define RTE_ETH_FOREACH_DEV_OWNED_BY(p, o) \
1483 for (p = rte_eth_find_next_owned_by(0, o); \
1484 (unsigned int)p < (unsigned int)RTE_MAX_ETHPORTS; \
1485 p = rte_eth_find_next_owned_by(p + 1, o))
1488 * Iterates over valid ethdev ports.
1491 * The id of the next possible valid port.
1493 * Next valid port id, RTE_MAX_ETHPORTS if there is none.
1495 uint16_t rte_eth_find_next(uint16_t port_id);
1498 * Macro to iterate over all enabled and ownerless ethdev ports.
1500 #define RTE_ETH_FOREACH_DEV(p) \
1501 RTE_ETH_FOREACH_DEV_OWNED_BY(p, RTE_ETH_DEV_NO_OWNER)
1505 * @b EXPERIMENTAL: this API may change without prior notice.
1507 * Iterates over ethdev ports of a specified device.
1509 * @param port_id_start
1510 * The id of the next possible valid port.
1512 * The generic device behind the ports to iterate.
1514 * Next port id of the device, possibly port_id_start,
1515 * RTE_MAX_ETHPORTS if there is none.
1519 rte_eth_find_next_of(uint16_t port_id_start,
1520 const struct rte_device *parent);
1523 * Macro to iterate over all ethdev ports of a specified device.
1526 * The id of the matching port being iterated.
1528 * The rte_device pointer matching the iterated ports.
1530 #define RTE_ETH_FOREACH_DEV_OF(port_id, parent) \
1531 for (port_id = rte_eth_find_next_of(0, parent); \
1532 port_id < RTE_MAX_ETHPORTS; \
1533 port_id = rte_eth_find_next_of(port_id + 1, parent))
1537 * @b EXPERIMENTAL: this API may change without prior notice.
1539 * Iterates over sibling ethdev ports (i.e. sharing the same rte_device).
1541 * @param port_id_start
1542 * The id of the next possible valid sibling port.
1543 * @param ref_port_id
1544 * The id of a reference port to compare rte_device with.
1546 * Next sibling port id, possibly port_id_start or ref_port_id itself,
1547 * RTE_MAX_ETHPORTS if there is none.
1551 rte_eth_find_next_sibling(uint16_t port_id_start,
1552 uint16_t ref_port_id);
1555 * Macro to iterate over all ethdev ports sharing the same rte_device
1556 * as the specified port.
1557 * Note: the specified reference port is part of the loop iterations.
1560 * The id of the matching port being iterated.
1561 * @param ref_port_id
1562 * The id of the port being compared.
1564 #define RTE_ETH_FOREACH_DEV_SIBLING(port_id, ref_port_id) \
1565 for (port_id = rte_eth_find_next_sibling(0, ref_port_id); \
1566 port_id < RTE_MAX_ETHPORTS; \
1567 port_id = rte_eth_find_next_sibling(port_id + 1, ref_port_id))
1571 * @b EXPERIMENTAL: this API may change without prior notice.
1573 * Get a new unique owner identifier.
1574 * An owner identifier is used to owns Ethernet devices by only one DPDK entity
1575 * to avoid multiple management of device by different entities.
1578 * Owner identifier pointer.
1580 * Negative errno value on error, 0 on success.
1583 int rte_eth_dev_owner_new(uint64_t *owner_id);
1587 * @b EXPERIMENTAL: this API may change without prior notice.
1589 * Set an Ethernet device owner.
1592 * The identifier of the port to own.
1594 * The owner pointer.
1596 * Negative errno value on error, 0 on success.
1599 int rte_eth_dev_owner_set(const uint16_t port_id,
1600 const struct rte_eth_dev_owner *owner);
1604 * @b EXPERIMENTAL: this API may change without prior notice.
1606 * Unset Ethernet device owner to make the device ownerless.
1609 * The identifier of port to make ownerless.
1611 * The owner identifier.
1613 * 0 on success, negative errno value on error.
1616 int rte_eth_dev_owner_unset(const uint16_t port_id,
1617 const uint64_t owner_id);
1621 * @b EXPERIMENTAL: this API may change without prior notice.
1623 * Remove owner from all Ethernet devices owned by a specific owner.
1626 * The owner identifier.
1628 * 0 on success, negative errno value on error.
1631 int rte_eth_dev_owner_delete(const uint64_t owner_id);
1635 * @b EXPERIMENTAL: this API may change without prior notice.
1637 * Get the owner of an Ethernet device.
1640 * The port identifier.
1642 * The owner structure pointer to fill.
1644 * 0 on success, negative errno value on error..
1647 int rte_eth_dev_owner_get(const uint16_t port_id,
1648 struct rte_eth_dev_owner *owner);
1651 * Get the total number of Ethernet devices that have been successfully
1652 * initialized by the matching Ethernet driver during the PCI probing phase
1653 * and that are available for applications to use. These devices must be
1654 * accessed by using the ``RTE_ETH_FOREACH_DEV()`` macro to deal with
1655 * non-contiguous ranges of devices.
1656 * These non-contiguous ranges can be created by calls to hotplug functions or
1660 * - The total number of usable Ethernet devices.
1663 uint16_t rte_eth_dev_count(void);
1666 * Get the number of ports which are usable for the application.
1668 * These devices must be iterated by using the macro
1669 * ``RTE_ETH_FOREACH_DEV`` or ``RTE_ETH_FOREACH_DEV_OWNED_BY``
1670 * to deal with non-contiguous ranges of devices.
1673 * The count of available Ethernet devices.
1675 uint16_t rte_eth_dev_count_avail(void);
1678 * Get the total number of ports which are allocated.
1680 * Some devices may not be available for the application.
1683 * The total count of Ethernet devices.
1685 uint16_t rte_eth_dev_count_total(void);
1688 * Convert a numerical speed in Mbps to a bitmap flag that can be used in
1689 * the bitmap link_speeds of the struct rte_eth_conf
1692 * Numerical speed value in Mbps
1694 * ETH_LINK_[HALF/FULL]_DUPLEX (only for 10/100M speeds)
1696 * 0 if the speed cannot be mapped
1698 uint32_t rte_eth_speed_bitflag(uint32_t speed, int duplex);
1701 * Get DEV_RX_OFFLOAD_* flag name.
1706 * Offload name or 'UNKNOWN' if the flag cannot be recognised.
1708 const char *rte_eth_dev_rx_offload_name(uint64_t offload);
1711 * Get DEV_TX_OFFLOAD_* flag name.
1716 * Offload name or 'UNKNOWN' if the flag cannot be recognised.
1718 const char *rte_eth_dev_tx_offload_name(uint64_t offload);
1721 * Configure an Ethernet device.
1722 * This function must be invoked first before any other function in the
1723 * Ethernet API. This function can also be re-invoked when a device is in the
1727 * The port identifier of the Ethernet device to configure.
1728 * @param nb_rx_queue
1729 * The number of receive queues to set up for the Ethernet device.
1730 * @param nb_tx_queue
1731 * The number of transmit queues to set up for the Ethernet device.
1733 * The pointer to the configuration data to be used for the Ethernet device.
1734 * The *rte_eth_conf* structure includes:
1735 * - the hardware offload features to activate, with dedicated fields for
1736 * each statically configurable offload hardware feature provided by
1737 * Ethernet devices, such as IP checksum or VLAN tag stripping for
1739 * The Rx offload bitfield API is obsolete and will be deprecated.
1740 * Applications should set the ignore_bitfield_offloads bit on *rxmode*
1741 * structure and use offloads field to set per-port offloads instead.
1742 * - Any offloading set in eth_conf->[rt]xmode.offloads must be within
1743 * the [rt]x_offload_capa returned from rte_eth_dev_info_get().
1744 * Any type of device supported offloading set in the input argument
1745 * eth_conf->[rt]xmode.offloads to rte_eth_dev_configure() is enabled
1746 * on all queues and it can't be disabled in rte_eth_[rt]x_queue_setup()
1747 * - the Receive Side Scaling (RSS) configuration when using multiple RX
1748 * queues per port. Any RSS hash function set in eth_conf->rss_conf.rss_hf
1749 * must be within the flow_type_rss_offloads provided by drivers via
1750 * rte_eth_dev_info_get() API.
1752 * Embedding all configuration information in a single data structure
1753 * is the more flexible method that allows the addition of new features
1754 * without changing the syntax of the API.
1756 * - 0: Success, device configured.
1757 * - <0: Error code returned by the driver configuration function.
1759 int rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_queue,
1760 uint16_t nb_tx_queue, const struct rte_eth_conf *eth_conf);
1764 * @b EXPERIMENTAL: this API may change without prior notice.
1766 * Check if an Ethernet device was physically removed.
1769 * The port identifier of the Ethernet device.
1771 * 1 when the Ethernet device is removed, otherwise 0.
1775 rte_eth_dev_is_removed(uint16_t port_id);
1778 * Allocate and set up a receive queue for an Ethernet device.
1780 * The function allocates a contiguous block of memory for *nb_rx_desc*
1781 * receive descriptors from a memory zone associated with *socket_id*
1782 * and initializes each receive descriptor with a network buffer allocated
1783 * from the memory pool *mb_pool*.
1786 * The port identifier of the Ethernet device.
1787 * @param rx_queue_id
1788 * The index of the receive queue to set up.
1789 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1790 * to rte_eth_dev_configure().
1792 * The number of receive descriptors to allocate for the receive ring.
1794 * The *socket_id* argument is the socket identifier in case of NUMA.
1795 * The value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1796 * the DMA memory allocated for the receive descriptors of the ring.
1798 * The pointer to the configuration data to be used for the receive queue.
1799 * NULL value is allowed, in which case default RX configuration
1801 * The *rx_conf* structure contains an *rx_thresh* structure with the values
1802 * of the Prefetch, Host, and Write-Back threshold registers of the receive
1804 * In addition it contains the hardware offloads features to activate using
1805 * the DEV_RX_OFFLOAD_* flags.
1806 * If an offloading set in rx_conf->offloads
1807 * hasn't been set in the input argument eth_conf->rxmode.offloads
1808 * to rte_eth_dev_configure(), it is a new added offloading, it must be
1809 * per-queue type and it is enabled for the queue.
1810 * No need to repeat any bit in rx_conf->offloads which has already been
1811 * enabled in rte_eth_dev_configure() at port level. An offloading enabled
1812 * at port level can't be disabled at queue level.
1814 * The pointer to the memory pool from which to allocate *rte_mbuf* network
1815 * memory buffers to populate each descriptor of the receive ring.
1817 * - 0: Success, receive queue correctly set up.
1818 * - -EIO: if device is removed.
1819 * - -EINVAL: The memory pool pointer is null or the size of network buffers
1820 * which can be allocated from this memory pool does not fit the various
1821 * buffer sizes allowed by the device controller.
1822 * - -ENOMEM: Unable to allocate the receive ring descriptors or to
1823 * allocate network memory buffers from the memory pool when
1824 * initializing receive descriptors.
1826 int rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
1827 uint16_t nb_rx_desc, unsigned int socket_id,
1828 const struct rte_eth_rxconf *rx_conf,
1829 struct rte_mempool *mb_pool);
1832 * Allocate and set up a transmit queue for an Ethernet device.
1835 * The port identifier of the Ethernet device.
1836 * @param tx_queue_id
1837 * The index of the transmit queue to set up.
1838 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1839 * to rte_eth_dev_configure().
1841 * The number of transmit descriptors to allocate for the transmit ring.
1843 * The *socket_id* argument is the socket identifier in case of NUMA.
1844 * Its value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1845 * the DMA memory allocated for the transmit descriptors of the ring.
1847 * The pointer to the configuration data to be used for the transmit queue.
1848 * NULL value is allowed, in which case default TX configuration
1850 * The *tx_conf* structure contains the following data:
1851 * - The *tx_thresh* structure with the values of the Prefetch, Host, and
1852 * Write-Back threshold registers of the transmit ring.
1853 * When setting Write-Back threshold to the value greater then zero,
1854 * *tx_rs_thresh* value should be explicitly set to one.
1855 * - The *tx_free_thresh* value indicates the [minimum] number of network
1856 * buffers that must be pending in the transmit ring to trigger their
1857 * [implicit] freeing by the driver transmit function.
1858 * - The *tx_rs_thresh* value indicates the [minimum] number of transmit
1859 * descriptors that must be pending in the transmit ring before setting the
1860 * RS bit on a descriptor by the driver transmit function.
1861 * The *tx_rs_thresh* value should be less or equal then
1862 * *tx_free_thresh* value, and both of them should be less then
1864 * - The *offloads* member contains Tx offloads to be enabled.
1865 * If an offloading set in tx_conf->offloads
1866 * hasn't been set in the input argument eth_conf->txmode.offloads
1867 * to rte_eth_dev_configure(), it is a new added offloading, it must be
1868 * per-queue type and it is enabled for the queue.
1869 * No need to repeat any bit in tx_conf->offloads which has already been
1870 * enabled in rte_eth_dev_configure() at port level. An offloading enabled
1871 * at port level can't be disabled at queue level.
1873 * Note that setting *tx_free_thresh* or *tx_rs_thresh* value to 0 forces
1874 * the transmit function to use default values.
1876 * - 0: Success, the transmit queue is correctly set up.
1877 * - -ENOMEM: Unable to allocate the transmit ring descriptors.
1879 int rte_eth_tx_queue_setup(uint16_t port_id, uint16_t tx_queue_id,
1880 uint16_t nb_tx_desc, unsigned int socket_id,
1881 const struct rte_eth_txconf *tx_conf);
1884 * Return the NUMA socket to which an Ethernet device is connected
1887 * The port identifier of the Ethernet device
1889 * The NUMA socket id to which the Ethernet device is connected or
1890 * a default of zero if the socket could not be determined.
1891 * -1 is returned is the port_id value is out of range.
1893 int rte_eth_dev_socket_id(uint16_t port_id);
1896 * Check if port_id of device is attached
1899 * The port identifier of the Ethernet device
1901 * - 0 if port is out of range or not attached
1902 * - 1 if device is attached
1904 int rte_eth_dev_is_valid_port(uint16_t port_id);
1907 * Start specified RX queue of a port. It is used when rx_deferred_start
1908 * flag of the specified queue is true.
1911 * The port identifier of the Ethernet device
1912 * @param rx_queue_id
1913 * The index of the rx queue to update the ring.
1914 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1915 * to rte_eth_dev_configure().
1917 * - 0: Success, the receive queue is started.
1918 * - -EINVAL: The port_id or the queue_id out of range.
1919 * - -EIO: if device is removed.
1920 * - -ENOTSUP: The function not supported in PMD driver.
1922 int rte_eth_dev_rx_queue_start(uint16_t port_id, uint16_t rx_queue_id);
1925 * Stop specified RX queue of a port
1928 * The port identifier of the Ethernet device
1929 * @param rx_queue_id
1930 * The index of the rx queue to update the ring.
1931 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1932 * to rte_eth_dev_configure().
1934 * - 0: Success, the receive queue is stopped.
1935 * - -EINVAL: The port_id or the queue_id out of range.
1936 * - -EIO: if device is removed.
1937 * - -ENOTSUP: The function not supported in PMD driver.
1939 int rte_eth_dev_rx_queue_stop(uint16_t port_id, uint16_t rx_queue_id);
1942 * Start TX for specified queue of a port. It is used when tx_deferred_start
1943 * flag of the specified queue is true.
1946 * The port identifier of the Ethernet device
1947 * @param tx_queue_id
1948 * The index of the tx queue to update the ring.
1949 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1950 * to rte_eth_dev_configure().
1952 * - 0: Success, the transmit queue is started.
1953 * - -EINVAL: The port_id or the queue_id out of range.
1954 * - -EIO: if device is removed.
1955 * - -ENOTSUP: The function not supported in PMD driver.
1957 int rte_eth_dev_tx_queue_start(uint16_t port_id, uint16_t tx_queue_id);
1960 * Stop specified TX queue of a port
1963 * The port identifier of the Ethernet device
1964 * @param tx_queue_id
1965 * The index of the tx queue to update the ring.
1966 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1967 * to rte_eth_dev_configure().
1969 * - 0: Success, the transmit queue is stopped.
1970 * - -EINVAL: The port_id or the queue_id out of range.
1971 * - -EIO: if device is removed.
1972 * - -ENOTSUP: The function not supported in PMD driver.
1974 int rte_eth_dev_tx_queue_stop(uint16_t port_id, uint16_t tx_queue_id);
1977 * Start an Ethernet device.
1979 * The device start step is the last one and consists of setting the configured
1980 * offload features and in starting the transmit and the receive units of the
1983 * Device RTE_ETH_DEV_NOLIVE_MAC_ADDR flag causes MAC address to be set before
1984 * PMD port start callback function is invoked.
1986 * On success, all basic functions exported by the Ethernet API (link status,
1987 * receive/transmit, and so on) can be invoked.
1990 * The port identifier of the Ethernet device.
1992 * - 0: Success, Ethernet device started.
1993 * - <0: Error code of the driver device start function.
1995 int rte_eth_dev_start(uint16_t port_id);
1998 * Stop an Ethernet device. The device can be restarted with a call to
1999 * rte_eth_dev_start()
2002 * The port identifier of the Ethernet device.
2004 void rte_eth_dev_stop(uint16_t port_id);
2007 * Link up an Ethernet device.
2009 * Set device link up will re-enable the device rx/tx
2010 * functionality after it is previously set device linked down.
2013 * The port identifier of the Ethernet device.
2015 * - 0: Success, Ethernet device linked up.
2016 * - <0: Error code of the driver device link up function.
2018 int rte_eth_dev_set_link_up(uint16_t port_id);
2021 * Link down an Ethernet device.
2022 * The device rx/tx functionality will be disabled if success,
2023 * and it can be re-enabled with a call to
2024 * rte_eth_dev_set_link_up()
2027 * The port identifier of the Ethernet device.
2029 int rte_eth_dev_set_link_down(uint16_t port_id);
2032 * Close a stopped Ethernet device. The device cannot be restarted!
2033 * The function frees all port resources if the driver supports
2034 * the flag RTE_ETH_DEV_CLOSE_REMOVE.
2037 * The port identifier of the Ethernet device.
2039 void rte_eth_dev_close(uint16_t port_id);
2042 * Reset a Ethernet device and keep its port id.
2044 * When a port has to be reset passively, the DPDK application can invoke
2045 * this function. For example when a PF is reset, all its VFs should also
2046 * be reset. Normally a DPDK application can invoke this function when
2047 * RTE_ETH_EVENT_INTR_RESET event is detected, but can also use it to start
2048 * a port reset in other circumstances.
2050 * When this function is called, it first stops the port and then calls the
2051 * PMD specific dev_uninit( ) and dev_init( ) to return the port to initial
2052 * state, in which no Tx and Rx queues are setup, as if the port has been
2053 * reset and not started. The port keeps the port id it had before the
2056 * After calling rte_eth_dev_reset( ), the application should use
2057 * rte_eth_dev_configure( ), rte_eth_rx_queue_setup( ),
2058 * rte_eth_tx_queue_setup( ), and rte_eth_dev_start( )
2059 * to reconfigure the device as appropriate.
2061 * Note: To avoid unexpected behavior, the application should stop calling
2062 * Tx and Rx functions before calling rte_eth_dev_reset( ). For thread
2063 * safety, all these controlling functions should be called from the same
2067 * The port identifier of the Ethernet device.
2070 * - (0) if successful.
2071 * - (-EINVAL) if port identifier is invalid.
2072 * - (-ENOTSUP) if hardware doesn't support this function.
2073 * - (-EPERM) if not ran from the primary process.
2074 * - (-EIO) if re-initialisation failed or device is removed.
2075 * - (-ENOMEM) if the reset failed due to OOM.
2076 * - (-EAGAIN) if the reset temporarily failed and should be retried later.
2078 int rte_eth_dev_reset(uint16_t port_id);
2081 * Enable receipt in promiscuous mode for an Ethernet device.
2084 * The port identifier of the Ethernet device.
2086 * - (0) if successful.
2087 * - (-ENOTSUP) if support for promiscuous_enable() does not exist
2089 * - (-ENODEV) if *port_id* invalid.
2091 int rte_eth_promiscuous_enable(uint16_t port_id);
2094 * Disable receipt in promiscuous mode for an Ethernet device.
2097 * The port identifier of the Ethernet device.
2099 * - (0) if successful.
2100 * - (-ENOTSUP) if support for promiscuous_disable() does not exist
2102 * - (-ENODEV) if *port_id* invalid.
2104 int rte_eth_promiscuous_disable(uint16_t port_id);
2107 * Return the value of promiscuous mode for an Ethernet device.
2110 * The port identifier of the Ethernet device.
2112 * - (1) if promiscuous is enabled
2113 * - (0) if promiscuous is disabled.
2116 int rte_eth_promiscuous_get(uint16_t port_id);
2119 * Enable the receipt of any multicast frame by an Ethernet device.
2122 * The port identifier of the Ethernet device.
2124 * - (0) if successful.
2125 * - (-ENOTSUP) if support for allmulticast_enable() does not exist
2127 * - (-ENODEV) if *port_id* invalid.
2129 int rte_eth_allmulticast_enable(uint16_t port_id);
2132 * Disable the receipt of all multicast frames by an Ethernet device.
2135 * The port identifier of the Ethernet device.
2137 * - (0) if successful.
2138 * - (-ENOTSUP) if support for allmulticast_disable() does not exist
2140 * - (-ENODEV) if *port_id* invalid.
2142 int rte_eth_allmulticast_disable(uint16_t port_id);
2145 * Return the value of allmulticast mode for an Ethernet device.
2148 * The port identifier of the Ethernet device.
2150 * - (1) if allmulticast is enabled
2151 * - (0) if allmulticast is disabled.
2154 int rte_eth_allmulticast_get(uint16_t port_id);
2157 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
2158 * or FULL-DUPLEX) of the physical link of an Ethernet device. It might need
2159 * to wait up to 9 seconds in it.
2162 * The port identifier of the Ethernet device.
2164 * A pointer to an *rte_eth_link* structure to be filled with
2165 * the status, the speed and the mode of the Ethernet device link.
2167 * - (0) if successful.
2168 * - (-ENOTSUP) if the function is not supported in PMD driver.
2169 * - (-ENODEV) if *port_id* invalid.
2171 int rte_eth_link_get(uint16_t port_id, struct rte_eth_link *link);
2174 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
2175 * or FULL-DUPLEX) of the physical link of an Ethernet device. It is a no-wait
2176 * version of rte_eth_link_get().
2179 * The port identifier of the Ethernet device.
2181 * A pointer to an *rte_eth_link* structure to be filled with
2182 * the status, the speed and the mode of the Ethernet device link.
2184 * - (0) if successful.
2185 * - (-ENOTSUP) if the function is not supported in PMD driver.
2186 * - (-ENODEV) if *port_id* invalid.
2188 int rte_eth_link_get_nowait(uint16_t port_id, struct rte_eth_link *link);
2191 * Retrieve the general I/O statistics of an Ethernet device.
2194 * The port identifier of the Ethernet device.
2196 * A pointer to a structure of type *rte_eth_stats* to be filled with
2197 * the values of device counters for the following set of statistics:
2198 * - *ipackets* with the total of successfully received packets.
2199 * - *opackets* with the total of successfully transmitted packets.
2200 * - *ibytes* with the total of successfully received bytes.
2201 * - *obytes* with the total of successfully transmitted bytes.
2202 * - *ierrors* with the total of erroneous received packets.
2203 * - *oerrors* with the total of failed transmitted packets.
2205 * Zero if successful. Non-zero otherwise.
2207 int rte_eth_stats_get(uint16_t port_id, struct rte_eth_stats *stats);
2210 * Reset the general I/O statistics of an Ethernet device.
2213 * The port identifier of the Ethernet device.
2215 * - (0) if device notified to reset stats.
2216 * - (-ENOTSUP) if hardware doesn't support.
2217 * - (-ENODEV) if *port_id* invalid.
2218 * - (<0): Error code of the driver stats reset function.
2220 int rte_eth_stats_reset(uint16_t port_id);
2223 * Retrieve names of extended statistics of an Ethernet device.
2225 * There is an assumption that 'xstat_names' and 'xstats' arrays are matched
2227 * xstats_names[i].name => xstats[i].value
2229 * And the array index is same with id field of 'struct rte_eth_xstat':
2232 * This assumption makes key-value pair matching less flexible but simpler.
2235 * The port identifier of the Ethernet device.
2236 * @param xstats_names
2237 * An rte_eth_xstat_name array of at least *size* elements to
2238 * be filled. If set to NULL, the function returns the required number
2241 * The size of the xstats_names array (number of elements).
2243 * - A positive value lower or equal to size: success. The return value
2244 * is the number of entries filled in the stats table.
2245 * - A positive value higher than size: error, the given statistics table
2246 * is too small. The return value corresponds to the size that should
2247 * be given to succeed. The entries in the table are not valid and
2248 * shall not be used by the caller.
2249 * - A negative value on error (invalid port id).
2251 int rte_eth_xstats_get_names(uint16_t port_id,
2252 struct rte_eth_xstat_name *xstats_names,
2256 * Retrieve extended statistics of an Ethernet device.
2258 * There is an assumption that 'xstat_names' and 'xstats' arrays are matched
2260 * xstats_names[i].name => xstats[i].value
2262 * And the array index is same with id field of 'struct rte_eth_xstat':
2265 * This assumption makes key-value pair matching less flexible but simpler.
2268 * The port identifier of the Ethernet device.
2270 * A pointer to a table of structure of type *rte_eth_xstat*
2271 * to be filled with device statistics ids and values.
2272 * This parameter can be set to NULL if n is 0.
2274 * The size of the xstats array (number of elements).
2276 * - A positive value lower or equal to n: success. The return value
2277 * is the number of entries filled in the stats table.
2278 * - A positive value higher than n: error, the given statistics table
2279 * is too small. The return value corresponds to the size that should
2280 * be given to succeed. The entries in the table are not valid and
2281 * shall not be used by the caller.
2282 * - A negative value on error (invalid port id).
2284 int rte_eth_xstats_get(uint16_t port_id, struct rte_eth_xstat *xstats,
2288 * Retrieve names of extended statistics of an Ethernet device.
2291 * The port identifier of the Ethernet device.
2292 * @param xstats_names
2293 * An rte_eth_xstat_name array of at least *size* elements to
2294 * be filled. If set to NULL, the function returns the required number
2297 * IDs array given by app to retrieve specific statistics
2299 * The size of the xstats_names array (number of elements).
2301 * - A positive value lower or equal to size: success. The return value
2302 * is the number of entries filled in the stats table.
2303 * - A positive value higher than size: error, the given statistics table
2304 * is too small. The return value corresponds to the size that should
2305 * be given to succeed. The entries in the table are not valid and
2306 * shall not be used by the caller.
2307 * - A negative value on error (invalid port id).
2310 rte_eth_xstats_get_names_by_id(uint16_t port_id,
2311 struct rte_eth_xstat_name *xstats_names, unsigned int size,
2315 * Retrieve extended statistics of an Ethernet device.
2318 * The port identifier of the Ethernet device.
2320 * A pointer to an ids array passed by application. This tells which
2321 * statistics values function should retrieve. This parameter
2322 * can be set to NULL if size is 0. In this case function will retrieve
2323 * all available statistics.
2325 * A pointer to a table to be filled with device statistics values.
2327 * The size of the ids array (number of elements).
2329 * - A positive value lower or equal to size: success. The return value
2330 * is the number of entries filled in the stats table.
2331 * - A positive value higher than size: error, the given statistics table
2332 * is too small. The return value corresponds to the size that should
2333 * be given to succeed. The entries in the table are not valid and
2334 * shall not be used by the caller.
2335 * - A negative value on error (invalid port id).
2337 int rte_eth_xstats_get_by_id(uint16_t port_id, const uint64_t *ids,
2338 uint64_t *values, unsigned int size);
2341 * Gets the ID of a statistic from its name.
2343 * This function searches for the statistics using string compares, and
2344 * as such should not be used on the fast-path. For fast-path retrieval of
2345 * specific statistics, store the ID as provided in *id* from this function,
2346 * and pass the ID to rte_eth_xstats_get()
2348 * @param port_id The port to look up statistics from
2349 * @param xstat_name The name of the statistic to return
2350 * @param[out] id A pointer to an app-supplied uint64_t which should be
2351 * set to the ID of the stat if the stat exists.
2354 * -ENODEV for invalid port_id,
2355 * -EIO if device is removed,
2356 * -EINVAL if the xstat_name doesn't exist in port_id
2358 int rte_eth_xstats_get_id_by_name(uint16_t port_id, const char *xstat_name,
2362 * Reset extended statistics of an Ethernet device.
2365 * The port identifier of the Ethernet device.
2367 * - (0) if device notified to reset extended stats.
2368 * - (-ENOTSUP) if pmd doesn't support both
2369 * extended stats and basic stats reset.
2370 * - (-ENODEV) if *port_id* invalid.
2371 * - (<0): Error code of the driver xstats reset function.
2373 int rte_eth_xstats_reset(uint16_t port_id);
2376 * Set a mapping for the specified transmit queue to the specified per-queue
2377 * statistics counter.
2380 * The port identifier of the Ethernet device.
2381 * @param tx_queue_id
2382 * The index of the transmit queue for which a queue stats mapping is required.
2383 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
2384 * to rte_eth_dev_configure().
2386 * The per-queue packet statistics functionality number that the transmit
2387 * queue is to be assigned.
2388 * The value must be in the range [0, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1].
2390 * Zero if successful. Non-zero otherwise.
2392 int rte_eth_dev_set_tx_queue_stats_mapping(uint16_t port_id,
2393 uint16_t tx_queue_id, uint8_t stat_idx);
2396 * Set a mapping for the specified receive queue to the specified per-queue
2397 * statistics counter.
2400 * The port identifier of the Ethernet device.
2401 * @param rx_queue_id
2402 * The index of the receive queue for which a queue stats mapping is required.
2403 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2404 * to rte_eth_dev_configure().
2406 * The per-queue packet statistics functionality number that the receive
2407 * queue is to be assigned.
2408 * The value must be in the range [0, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1].
2410 * Zero if successful. Non-zero otherwise.
2412 int rte_eth_dev_set_rx_queue_stats_mapping(uint16_t port_id,
2413 uint16_t rx_queue_id,
2417 * Retrieve the Ethernet address of an Ethernet device.
2420 * The port identifier of the Ethernet device.
2422 * A pointer to a structure of type *ether_addr* to be filled with
2423 * the Ethernet address of the Ethernet device.
2425 * - (0) if successful
2426 * - (-ENODEV) if *port_id* invalid.
2428 int rte_eth_macaddr_get(uint16_t port_id, struct rte_ether_addr *mac_addr);
2431 * Retrieve the contextual information of an Ethernet device.
2433 * As part of this function, a number of of fields in dev_info will be
2434 * initialized as follows:
2439 * Where lim is defined within the rte_eth_dev_info_get as
2441 * const struct rte_eth_desc_lim lim = {
2442 * .nb_max = UINT16_MAX,
2445 * .nb_seg_max = UINT16_MAX,
2446 * .nb_mtu_seg_max = UINT16_MAX,
2449 * device = dev->device
2450 * min_mtu = RTE_ETHER_MIN_MTU
2451 * max_mtu = UINT16_MAX
2453 * The following fields will be populated if support for dev_infos_get()
2454 * exists for the device and the rte_eth_dev 'dev' has been populated
2455 * successfully with a call to it:
2457 * driver_name = dev->device->driver->name
2458 * nb_rx_queues = dev->data->nb_rx_queues
2459 * nb_tx_queues = dev->data->nb_tx_queues
2460 * dev_flags = &dev->data->dev_flags
2463 * The port identifier of the Ethernet device.
2465 * A pointer to a structure of type *rte_eth_dev_info* to be filled with
2466 * the contextual information of the Ethernet device.
2468 * - (0) if successful.
2469 * - (-ENOTSUP) if support for dev_infos_get() does not exist for the device.
2470 * - (-ENODEV) if *port_id* invalid.
2472 int rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info);
2475 * Retrieve the firmware version of a device.
2478 * The port identifier of the device.
2480 * A pointer to a string array storing the firmware version of a device,
2481 * the string includes terminating null. This pointer is allocated by caller.
2483 * The size of the string array pointed by fw_version, which should be
2484 * large enough to store firmware version of the device.
2486 * - (0) if successful.
2487 * - (-ENOTSUP) if operation is not supported.
2488 * - (-ENODEV) if *port_id* invalid.
2489 * - (-EIO) if device is removed.
2490 * - (>0) if *fw_size* is not enough to store firmware version, return
2491 * the size of the non truncated string.
2493 int rte_eth_dev_fw_version_get(uint16_t port_id,
2494 char *fw_version, size_t fw_size);
2497 * Retrieve the supported packet types of an Ethernet device.
2499 * When a packet type is announced as supported, it *must* be recognized by
2500 * the PMD. For instance, if RTE_PTYPE_L2_ETHER, RTE_PTYPE_L2_ETHER_VLAN
2501 * and RTE_PTYPE_L3_IPV4 are announced, the PMD must return the following
2502 * packet types for these packets:
2503 * - Ether/IPv4 -> RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4
2504 * - Ether/Vlan/IPv4 -> RTE_PTYPE_L2_ETHER_VLAN | RTE_PTYPE_L3_IPV4
2505 * - Ether/[anything else] -> RTE_PTYPE_L2_ETHER
2506 * - Ether/Vlan/[anything else] -> RTE_PTYPE_L2_ETHER_VLAN
2508 * When a packet is received by a PMD, the most precise type must be
2509 * returned among the ones supported. However a PMD is allowed to set
2510 * packet type that is not in the supported list, at the condition that it
2511 * is more precise. Therefore, a PMD announcing no supported packet types
2512 * can still set a matching packet type in a received packet.
2515 * Better to invoke this API after the device is already started or rx burst
2516 * function is decided, to obtain correct supported ptypes.
2518 * if a given PMD does not report what ptypes it supports, then the supported
2519 * ptype count is reported as 0.
2521 * The port identifier of the Ethernet device.
2523 * A hint of what kind of packet type which the caller is interested in.
2525 * An array pointer to store adequate packet types, allocated by caller.
2527 * Size of the array pointed by param ptypes.
2529 * - (>=0) Number of supported ptypes. If the number of types exceeds num,
2530 * only num entries will be filled into the ptypes array, but the full
2531 * count of supported ptypes will be returned.
2532 * - (-ENODEV) if *port_id* invalid.
2534 int rte_eth_dev_get_supported_ptypes(uint16_t port_id, uint32_t ptype_mask,
2535 uint32_t *ptypes, int num);
2538 * Retrieve the MTU of an Ethernet device.
2541 * The port identifier of the Ethernet device.
2543 * A pointer to a uint16_t where the retrieved MTU is to be stored.
2545 * - (0) if successful.
2546 * - (-ENODEV) if *port_id* invalid.
2548 int rte_eth_dev_get_mtu(uint16_t port_id, uint16_t *mtu);
2551 * Change the MTU of an Ethernet device.
2554 * The port identifier of the Ethernet device.
2556 * A uint16_t for the MTU to be applied.
2558 * - (0) if successful.
2559 * - (-ENOTSUP) if operation is not supported.
2560 * - (-ENODEV) if *port_id* invalid.
2561 * - (-EIO) if device is removed.
2562 * - (-EINVAL) if *mtu* invalid, validation of mtu can occur within
2563 * rte_eth_dev_set_mtu if dev_infos_get is supported by the device or
2564 * when the mtu is set using dev->dev_ops->mtu_set.
2565 * - (-EBUSY) if operation is not allowed when the port is running
2567 int rte_eth_dev_set_mtu(uint16_t port_id, uint16_t mtu);
2570 * Enable/Disable hardware filtering by an Ethernet device of received
2571 * VLAN packets tagged with a given VLAN Tag Identifier.
2574 * The port identifier of the Ethernet device.
2576 * The VLAN Tag Identifier whose filtering must be enabled or disabled.
2578 * If > 0, enable VLAN filtering of VLAN packets tagged with *vlan_id*.
2579 * Otherwise, disable VLAN filtering of VLAN packets tagged with *vlan_id*.
2581 * - (0) if successful.
2582 * - (-ENOTSUP) if hardware-assisted VLAN filtering not configured.
2583 * - (-ENODEV) if *port_id* invalid.
2584 * - (-EIO) if device is removed.
2585 * - (-ENOSYS) if VLAN filtering on *port_id* disabled.
2586 * - (-EINVAL) if *vlan_id* > 4095.
2588 int rte_eth_dev_vlan_filter(uint16_t port_id, uint16_t vlan_id, int on);
2591 * Enable/Disable hardware VLAN Strip by a rx queue of an Ethernet device.
2592 * 82599/X540/X550 can support VLAN stripping at the rx queue level
2595 * The port identifier of the Ethernet device.
2596 * @param rx_queue_id
2597 * The index of the receive queue for which a queue stats mapping is required.
2598 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2599 * to rte_eth_dev_configure().
2601 * If 1, Enable VLAN Stripping of the receive queue of the Ethernet port.
2602 * If 0, Disable VLAN Stripping of the receive queue of the Ethernet port.
2604 * - (0) if successful.
2605 * - (-ENOTSUP) if hardware-assisted VLAN stripping not configured.
2606 * - (-ENODEV) if *port_id* invalid.
2607 * - (-EINVAL) if *rx_queue_id* invalid.
2609 int rte_eth_dev_set_vlan_strip_on_queue(uint16_t port_id, uint16_t rx_queue_id,
2613 * Set the Outer VLAN Ether Type by an Ethernet device, it can be inserted to
2614 * the VLAN Header. This is a register setup available on some Intel NIC, not
2615 * but all, please check the data sheet for availability.
2618 * The port identifier of the Ethernet device.
2622 * The Tag Protocol ID
2624 * - (0) if successful.
2625 * - (-ENOTSUP) if hardware-assisted VLAN TPID setup is not supported.
2626 * - (-ENODEV) if *port_id* invalid.
2627 * - (-EIO) if device is removed.
2629 int rte_eth_dev_set_vlan_ether_type(uint16_t port_id,
2630 enum rte_vlan_type vlan_type,
2634 * Set VLAN offload configuration on an Ethernet device
2635 * Enable/Disable Extended VLAN by an Ethernet device, This is a register setup
2636 * available on some Intel NIC, not but all, please check the data sheet for
2638 * Enable/Disable VLAN Strip can be done on rx queue for certain NIC, but here
2639 * the configuration is applied on the port level.
2642 * The port identifier of the Ethernet device.
2643 * @param offload_mask
2644 * The VLAN Offload bit mask can be mixed use with "OR"
2645 * ETH_VLAN_STRIP_OFFLOAD
2646 * ETH_VLAN_FILTER_OFFLOAD
2647 * ETH_VLAN_EXTEND_OFFLOAD
2648 * ETH_QINQ_STRIP_OFFLOAD
2650 * - (0) if successful.
2651 * - (-ENOTSUP) if hardware-assisted VLAN filtering not configured.
2652 * - (-ENODEV) if *port_id* invalid.
2653 * - (-EIO) if device is removed.
2655 int rte_eth_dev_set_vlan_offload(uint16_t port_id, int offload_mask);
2658 * Read VLAN Offload configuration from an Ethernet device
2661 * The port identifier of the Ethernet device.
2663 * - (>0) if successful. Bit mask to indicate
2664 * ETH_VLAN_STRIP_OFFLOAD
2665 * ETH_VLAN_FILTER_OFFLOAD
2666 * ETH_VLAN_EXTEND_OFFLOAD
2667 * ETH_QINQ_STRIP_OFFLOAD
2668 * - (-ENODEV) if *port_id* invalid.
2670 int rte_eth_dev_get_vlan_offload(uint16_t port_id);
2673 * Set port based TX VLAN insertion on or off.
2676 * The port identifier of the Ethernet device.
2678 * Port based TX VLAN identifier together with user priority.
2680 * Turn on or off the port based TX VLAN insertion.
2683 * - (0) if successful.
2684 * - negative if failed.
2686 int rte_eth_dev_set_vlan_pvid(uint16_t port_id, uint16_t pvid, int on);
2688 typedef void (*buffer_tx_error_fn)(struct rte_mbuf **unsent, uint16_t count,
2692 * Structure used to buffer packets for future TX
2693 * Used by APIs rte_eth_tx_buffer and rte_eth_tx_buffer_flush
2695 struct rte_eth_dev_tx_buffer {
2696 buffer_tx_error_fn error_callback;
2697 void *error_userdata;
2698 uint16_t size; /**< Size of buffer for buffered tx */
2699 uint16_t length; /**< Number of packets in the array */
2700 struct rte_mbuf *pkts[];
2701 /**< Pending packets to be sent on explicit flush or when full */
2705 * Calculate the size of the tx buffer.
2708 * Number of stored packets.
2710 #define RTE_ETH_TX_BUFFER_SIZE(sz) \
2711 (sizeof(struct rte_eth_dev_tx_buffer) + (sz) * sizeof(struct rte_mbuf *))
2714 * Initialize default values for buffered transmitting
2717 * Tx buffer to be initialized.
2724 rte_eth_tx_buffer_init(struct rte_eth_dev_tx_buffer *buffer, uint16_t size);
2727 * Configure a callback for buffered packets which cannot be sent
2729 * Register a specific callback to be called when an attempt is made to send
2730 * all packets buffered on an ethernet port, but not all packets can
2731 * successfully be sent. The callback registered here will be called only
2732 * from calls to rte_eth_tx_buffer() and rte_eth_tx_buffer_flush() APIs.
2733 * The default callback configured for each queue by default just frees the
2734 * packets back to the calling mempool. If additional behaviour is required,
2735 * for example, to count dropped packets, or to retry transmission of packets
2736 * which cannot be sent, this function should be used to register a suitable
2737 * callback function to implement the desired behaviour.
2738 * The example callback "rte_eth_count_unsent_packet_callback()" is also
2739 * provided as reference.
2742 * The port identifier of the Ethernet device.
2744 * The function to be used as the callback.
2746 * Arbitrary parameter to be passed to the callback function
2748 * 0 on success, or -1 on error with rte_errno set appropriately
2751 rte_eth_tx_buffer_set_err_callback(struct rte_eth_dev_tx_buffer *buffer,
2752 buffer_tx_error_fn callback, void *userdata);
2755 * Callback function for silently dropping unsent buffered packets.
2757 * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
2758 * adjust the default behavior when buffered packets cannot be sent. This
2759 * function drops any unsent packets silently and is used by tx buffered
2760 * operations as default behavior.
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
2777 rte_eth_tx_buffer_drop_callback(struct rte_mbuf **pkts, uint16_t unsent,
2781 * Callback function for tracking unsent buffered packets.
2783 * This function can be passed to rte_eth_tx_buffer_set_err_callback() to
2784 * adjust the default behavior when buffered packets cannot be sent. This
2785 * function drops any unsent packets, but also updates a user-supplied counter
2786 * to track the overall number of packets dropped. The counter should be an
2787 * uint64_t variable.
2789 * NOTE: this function should not be called directly, instead it should be used
2790 * as a callback for packet buffering.
2792 * NOTE: when configuring this function as a callback with
2793 * rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter
2794 * should point to an uint64_t value.
2797 * The previously buffered packets which could not be sent
2799 * The number of unsent packets in the pkts array
2801 * Pointer to an uint64_t value, which will be incremented by unsent
2804 rte_eth_tx_buffer_count_callback(struct rte_mbuf **pkts, uint16_t unsent,
2808 * Request the driver to free mbufs currently cached by the driver. The
2809 * driver will only free the mbuf if it is no longer in use. It is the
2810 * application's responsibility to ensure rte_eth_tx_buffer_flush(..) is
2814 * The port identifier of the Ethernet device.
2816 * The index of the transmit queue through which output packets must be
2818 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
2819 * to rte_eth_dev_configure().
2821 * Maximum number of packets to free. Use 0 to indicate all possible packets
2822 * should be freed. Note that a packet may be using multiple mbufs.
2825 * -ENODEV: Invalid interface
2826 * -EIO: device is removed
2827 * -ENOTSUP: Driver does not support function
2829 * 0-n: Number of packets freed. More packets may still remain in ring that
2833 rte_eth_tx_done_cleanup(uint16_t port_id, uint16_t queue_id, uint32_t free_cnt);
2836 * Subtypes for IPsec offload event(@ref RTE_ETH_EVENT_IPSEC) raised by
2839 enum rte_eth_event_ipsec_subtype {
2840 RTE_ETH_EVENT_IPSEC_UNKNOWN = 0,
2841 /**< Unknown event type */
2842 RTE_ETH_EVENT_IPSEC_ESN_OVERFLOW,
2843 /**< Sequence number overflow */
2844 RTE_ETH_EVENT_IPSEC_SA_TIME_EXPIRY,
2845 /**< Soft time expiry of SA */
2846 RTE_ETH_EVENT_IPSEC_SA_BYTE_EXPIRY,
2847 /**< Soft byte expiry of SA */
2848 RTE_ETH_EVENT_IPSEC_MAX
2849 /**< Max value of this enum */
2853 * Descriptor for @ref RTE_ETH_EVENT_IPSEC event. Used by eth dev to send extra
2854 * information of the IPsec offload event.
2856 struct rte_eth_event_ipsec_desc {
2857 enum rte_eth_event_ipsec_subtype subtype;
2858 /**< Type of RTE_ETH_EVENT_IPSEC_* event */
2860 /**< Event specific metadata
2862 * For the following events, *userdata* registered
2863 * with the *rte_security_session* would be returned
2866 * - @ref RTE_ETH_EVENT_IPSEC_ESN_OVERFLOW
2867 * - @ref RTE_ETH_EVENT_IPSEC_SA_TIME_EXPIRY
2868 * - @ref RTE_ETH_EVENT_IPSEC_SA_BYTE_EXPIRY
2870 * @see struct rte_security_session_conf
2876 * The eth device event type for interrupt, and maybe others in the future.
2878 enum rte_eth_event_type {
2879 RTE_ETH_EVENT_UNKNOWN, /**< unknown event type */
2880 RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
2881 RTE_ETH_EVENT_QUEUE_STATE,
2882 /**< queue state event (enabled/disabled) */
2883 RTE_ETH_EVENT_INTR_RESET,
2884 /**< reset interrupt event, sent to VF on PF reset */
2885 RTE_ETH_EVENT_VF_MBOX, /**< message from the VF received by PF */
2886 RTE_ETH_EVENT_MACSEC, /**< MACsec offload related event */
2887 RTE_ETH_EVENT_INTR_RMV, /**< device removal event */
2888 RTE_ETH_EVENT_NEW, /**< port is probed */
2889 RTE_ETH_EVENT_DESTROY, /**< port is released */
2890 RTE_ETH_EVENT_IPSEC, /**< IPsec offload related event */
2891 RTE_ETH_EVENT_MAX /**< max value of this enum */
2894 typedef int (*rte_eth_dev_cb_fn)(uint16_t port_id,
2895 enum rte_eth_event_type event, void *cb_arg, void *ret_param);
2896 /**< user application callback to be registered for interrupts */
2899 * Register a callback function for port event.
2903 * RTE_ETH_ALL means register the event for all port ids.
2907 * User supplied callback function to be called.
2909 * Pointer to the parameters for the registered callback.
2912 * - On success, zero.
2913 * - On failure, a negative value.
2915 int rte_eth_dev_callback_register(uint16_t port_id,
2916 enum rte_eth_event_type event,
2917 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
2920 * Unregister a callback function for port event.
2924 * RTE_ETH_ALL means unregister the event for all port ids.
2928 * User supplied callback function to be called.
2930 * Pointer to the parameters for the registered callback. -1 means to
2931 * remove all for the same callback address and same event.
2934 * - On success, zero.
2935 * - On failure, a negative value.
2937 int rte_eth_dev_callback_unregister(uint16_t port_id,
2938 enum rte_eth_event_type event,
2939 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
2942 * When there is no rx packet coming in Rx Queue for a long time, we can
2943 * sleep lcore related to RX Queue for power saving, and enable rx interrupt
2944 * to be triggered when Rx packet arrives.
2946 * The rte_eth_dev_rx_intr_enable() function enables rx queue
2947 * interrupt on specific rx queue of a port.
2950 * The port identifier of the Ethernet device.
2952 * The index of the receive queue from which to retrieve input packets.
2953 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2954 * to rte_eth_dev_configure().
2956 * - (0) if successful.
2957 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
2959 * - (-ENODEV) if *port_id* invalid.
2960 * - (-EIO) if device is removed.
2962 int rte_eth_dev_rx_intr_enable(uint16_t port_id, uint16_t queue_id);
2965 * When lcore wakes up from rx interrupt indicating packet coming, disable rx
2966 * interrupt and returns to polling mode.
2968 * The rte_eth_dev_rx_intr_disable() function disables rx queue
2969 * interrupt on specific rx queue of a port.
2972 * The port identifier of the Ethernet device.
2974 * The index of the receive queue from which to retrieve input packets.
2975 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
2976 * to rte_eth_dev_configure().
2978 * - (0) if successful.
2979 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
2981 * - (-ENODEV) if *port_id* invalid.
2982 * - (-EIO) if device is removed.
2984 int rte_eth_dev_rx_intr_disable(uint16_t port_id, uint16_t queue_id);
2987 * RX Interrupt control per port.
2990 * The port identifier of the Ethernet device.
2992 * Epoll instance fd which the intr vector associated to.
2993 * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
2995 * The operation be performed for the vector.
2996 * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
3000 * - On success, zero.
3001 * - On failure, a negative value.
3003 int rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data);
3006 * RX Interrupt control per 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 * Epoll instance fd which the intr vector associated to.
3016 * Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
3018 * The operation be performed for the vector.
3019 * Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
3023 * - On success, zero.
3024 * - On failure, a negative value.
3026 int rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
3027 int epfd, int op, void *data);
3031 * @b EXPERIMENTAL: this API may change without prior notice.
3033 * Get interrupt fd per Rx queue.
3036 * The port identifier of the Ethernet device.
3038 * The index of the receive queue from which to retrieve input packets.
3039 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
3040 * to rte_eth_dev_configure().
3042 * - (>=0) the interrupt fd associated to the requested Rx queue if
3048 rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id);
3051 * Turn on the LED on the Ethernet device.
3052 * This function turns on the LED on the Ethernet device.
3055 * The port identifier of the Ethernet device.
3057 * - (0) if successful.
3058 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
3060 * - (-ENODEV) if *port_id* invalid.
3061 * - (-EIO) if device is removed.
3063 int rte_eth_led_on(uint16_t port_id);
3066 * Turn off the LED on the Ethernet device.
3067 * This function turns off the LED on the Ethernet device.
3070 * The port identifier of the Ethernet device.
3072 * - (0) if successful.
3073 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
3075 * - (-ENODEV) if *port_id* invalid.
3076 * - (-EIO) if device is removed.
3078 int rte_eth_led_off(uint16_t port_id);
3081 * Get current status of the Ethernet link flow control for Ethernet device
3084 * The port identifier of the Ethernet device.
3086 * The pointer to the structure where to store the flow control parameters.
3088 * - (0) if successful.
3089 * - (-ENOTSUP) if hardware doesn't support flow control.
3090 * - (-ENODEV) if *port_id* invalid.
3091 * - (-EIO) if device is removed.
3093 int rte_eth_dev_flow_ctrl_get(uint16_t port_id,
3094 struct rte_eth_fc_conf *fc_conf);
3097 * Configure the Ethernet link flow control for Ethernet device
3100 * The port identifier of the Ethernet device.
3102 * The pointer to the structure of the flow control parameters.
3104 * - (0) if successful.
3105 * - (-ENOTSUP) if hardware doesn't support flow control mode.
3106 * - (-ENODEV) if *port_id* invalid.
3107 * - (-EINVAL) if bad parameter
3108 * - (-EIO) if flow control setup failure or device is removed.
3110 int rte_eth_dev_flow_ctrl_set(uint16_t port_id,
3111 struct rte_eth_fc_conf *fc_conf);
3114 * Configure the Ethernet priority flow control under DCB environment
3115 * for Ethernet device.
3118 * The port identifier of the Ethernet device.
3120 * The pointer to the structure of the priority flow control parameters.
3122 * - (0) if successful.
3123 * - (-ENOTSUP) if hardware doesn't support priority flow control mode.
3124 * - (-ENODEV) if *port_id* invalid.
3125 * - (-EINVAL) if bad parameter
3126 * - (-EIO) if flow control setup failure or device is removed.
3128 int rte_eth_dev_priority_flow_ctrl_set(uint16_t port_id,
3129 struct rte_eth_pfc_conf *pfc_conf);
3132 * Add a MAC address to an internal array of addresses used to enable whitelist
3133 * filtering to accept packets only if the destination MAC address matches.
3136 * The port identifier of the Ethernet device.
3138 * The MAC address to add.
3140 * VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
3141 * not enabled, this should be set to 0.
3143 * - (0) if successfully added or *mac_addr* was already added.
3144 * - (-ENOTSUP) if hardware doesn't support this feature.
3145 * - (-ENODEV) if *port* is invalid.
3146 * - (-EIO) if device is removed.
3147 * - (-ENOSPC) if no more MAC addresses can be added.
3148 * - (-EINVAL) if MAC address is invalid.
3150 int rte_eth_dev_mac_addr_add(uint16_t port_id, struct rte_ether_addr *mac_addr,
3154 * Remove a MAC address from the internal array of addresses.
3157 * The port identifier of the Ethernet device.
3159 * MAC address to remove.
3161 * - (0) if successful, or *mac_addr* didn't exist.
3162 * - (-ENOTSUP) if hardware doesn't support.
3163 * - (-ENODEV) if *port* invalid.
3164 * - (-EADDRINUSE) if attempting to remove the default MAC address
3166 int rte_eth_dev_mac_addr_remove(uint16_t port_id,
3167 struct rte_ether_addr *mac_addr);
3170 * Set the default MAC address.
3173 * The port identifier of the Ethernet device.
3175 * New default MAC address.
3177 * - (0) if successful, or *mac_addr* didn't exist.
3178 * - (-ENOTSUP) if hardware doesn't support.
3179 * - (-ENODEV) if *port* invalid.
3180 * - (-EINVAL) if MAC address is invalid.
3182 int rte_eth_dev_default_mac_addr_set(uint16_t port_id,
3183 struct rte_ether_addr *mac_addr);
3186 * Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
3189 * The port identifier of the Ethernet device.
3193 * Redirection table size. The table size can be queried by
3194 * rte_eth_dev_info_get().
3196 * - (0) if successful.
3197 * - (-ENOTSUP) if hardware doesn't support.
3198 * - (-EINVAL) if bad parameter.
3199 * - (-EIO) if device is removed.
3201 int rte_eth_dev_rss_reta_update(uint16_t port_id,
3202 struct rte_eth_rss_reta_entry64 *reta_conf,
3203 uint16_t reta_size);
3206 * Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
3209 * The port identifier of the Ethernet device.
3211 * RETA to query. For each requested reta entry, corresponding bit
3212 * in mask must be set.
3214 * Redirection table size. The table size can be queried by
3215 * rte_eth_dev_info_get().
3217 * - (0) if successful.
3218 * - (-ENOTSUP) if hardware doesn't support.
3219 * - (-EINVAL) if bad parameter.
3220 * - (-EIO) if device is removed.
3222 int rte_eth_dev_rss_reta_query(uint16_t port_id,
3223 struct rte_eth_rss_reta_entry64 *reta_conf,
3224 uint16_t reta_size);
3227 * Updates unicast hash table for receiving packet with the given destination
3228 * MAC address, and the packet is routed to all VFs for which the RX mode is
3229 * accept packets that match the unicast hash table.
3232 * The port identifier of the Ethernet device.
3234 * Unicast MAC address.
3236 * 1 - Set an unicast hash bit for receiving packets with the MAC address.
3237 * 0 - Clear an unicast hash bit.
3239 * - (0) if successful.
3240 * - (-ENOTSUP) if hardware doesn't support.
3241 * - (-ENODEV) if *port_id* invalid.
3242 * - (-EIO) if device is removed.
3243 * - (-EINVAL) if bad parameter.
3245 int rte_eth_dev_uc_hash_table_set(uint16_t port_id, struct rte_ether_addr *addr,
3249 * Updates all unicast hash bitmaps for receiving packet with any Unicast
3250 * Ethernet MAC addresses,the packet is routed to all VFs for which the RX
3251 * mode is accept packets that match the unicast hash table.
3254 * The port identifier of the Ethernet device.
3256 * 1 - Set all unicast hash bitmaps for receiving all the Ethernet
3258 * 0 - Clear all unicast hash bitmaps
3260 * - (0) if successful.
3261 * - (-ENOTSUP) if hardware doesn't support.
3262 * - (-ENODEV) if *port_id* invalid.
3263 * - (-EIO) if device is removed.
3264 * - (-EINVAL) if bad parameter.
3266 int rte_eth_dev_uc_all_hash_table_set(uint16_t port_id, uint8_t on);
3269 * Set a traffic mirroring rule on an Ethernet device
3272 * The port identifier of the Ethernet device.
3273 * @param mirror_conf
3274 * The pointer to the traffic mirroring structure describing the mirroring rule.
3275 * The *rte_eth_vm_mirror_conf* structure includes the type of mirroring rule,
3276 * destination pool and the value of rule if enable vlan or pool mirroring.
3279 * The index of traffic mirroring rule, we support four separated rules.
3281 * 1 - Enable a mirroring rule.
3282 * 0 - Disable a mirroring rule.
3284 * - (0) if successful.
3285 * - (-ENOTSUP) if hardware doesn't support this feature.
3286 * - (-ENODEV) if *port_id* invalid.
3287 * - (-EIO) if device is removed.
3288 * - (-EINVAL) if the mr_conf information is not correct.
3290 int rte_eth_mirror_rule_set(uint16_t port_id,
3291 struct rte_eth_mirror_conf *mirror_conf,
3296 * Reset a traffic mirroring rule on an Ethernet device.
3299 * The port identifier of the Ethernet device.
3301 * The index of traffic mirroring rule, we support four separated rules.
3303 * - (0) if successful.
3304 * - (-ENOTSUP) if hardware doesn't support this feature.
3305 * - (-ENODEV) if *port_id* invalid.
3306 * - (-EIO) if device is removed.
3307 * - (-EINVAL) if bad parameter.
3309 int rte_eth_mirror_rule_reset(uint16_t port_id,
3313 * Set the rate limitation for a queue on an Ethernet device.
3316 * The port identifier of the Ethernet device.
3320 * The tx rate in Mbps. Allocated from the total port link speed.
3322 * - (0) if successful.
3323 * - (-ENOTSUP) if hardware doesn't support this feature.
3324 * - (-ENODEV) if *port_id* invalid.
3325 * - (-EIO) if device is removed.
3326 * - (-EINVAL) if bad parameter.
3328 int rte_eth_set_queue_rate_limit(uint16_t port_id, uint16_t queue_idx,
3332 * Configuration of Receive Side Scaling hash computation of Ethernet device.
3335 * The port identifier of the Ethernet device.
3337 * The new configuration to use for RSS hash computation on the port.
3339 * - (0) if successful.
3340 * - (-ENODEV) if port identifier is invalid.
3341 * - (-EIO) if device is removed.
3342 * - (-ENOTSUP) if hardware doesn't support.
3343 * - (-EINVAL) if bad parameter.
3345 int rte_eth_dev_rss_hash_update(uint16_t port_id,
3346 struct rte_eth_rss_conf *rss_conf);
3349 * Retrieve current configuration of Receive Side Scaling hash computation
3350 * of Ethernet device.
3353 * The port identifier of the Ethernet device.
3355 * Where to store the current RSS hash configuration of the Ethernet device.
3357 * - (0) if successful.
3358 * - (-ENODEV) if port identifier is invalid.
3359 * - (-EIO) if device is removed.
3360 * - (-ENOTSUP) if hardware doesn't support RSS.
3363 rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
3364 struct rte_eth_rss_conf *rss_conf);
3367 * Add UDP tunneling port for a specific type of tunnel.
3368 * The packets with this UDP port will be identified as this type of tunnel.
3369 * Before enabling any offloading function for a tunnel, users can call this API
3370 * to change or add more UDP port for the tunnel. So the offloading function
3371 * can take effect on the packets with the specific UDP port.
3374 * The port identifier of the Ethernet device.
3376 * UDP tunneling configuration.
3379 * - (0) if successful.
3380 * - (-ENODEV) if port identifier is invalid.
3381 * - (-EIO) if device is removed.
3382 * - (-ENOTSUP) if hardware doesn't support tunnel type.
3385 rte_eth_dev_udp_tunnel_port_add(uint16_t port_id,
3386 struct rte_eth_udp_tunnel *tunnel_udp);
3389 * Delete UDP tunneling port a specific type of tunnel.
3390 * The packets with this UDP port will not be identified as this type of tunnel
3392 * Before enabling any offloading function for a tunnel, users can call this API
3393 * to delete a UDP port for the tunnel. So the offloading function will not take
3394 * effect on the packets with the specific UDP port.
3397 * The port identifier of the Ethernet device.
3399 * UDP tunneling configuration.
3402 * - (0) if successful.
3403 * - (-ENODEV) if port identifier is invalid.
3404 * - (-EIO) if device is removed.
3405 * - (-ENOTSUP) if hardware doesn't support tunnel type.
3408 rte_eth_dev_udp_tunnel_port_delete(uint16_t port_id,
3409 struct rte_eth_udp_tunnel *tunnel_udp);
3412 * Check whether the filter type is supported on an Ethernet device.
3413 * All the supported filter types are defined in 'rte_eth_ctrl.h'.
3416 * The port identifier of the Ethernet device.
3417 * @param filter_type
3420 * - (0) if successful.
3421 * - (-ENOTSUP) if hardware doesn't support this filter type.
3422 * - (-ENODEV) if *port_id* invalid.
3423 * - (-EIO) if device is removed.
3426 int rte_eth_dev_filter_supported(uint16_t port_id,
3427 enum rte_filter_type filter_type);
3430 * Take operations to assigned filter type on an Ethernet device.
3431 * All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.
3434 * The port identifier of the Ethernet device.
3435 * @param filter_type
3438 * Type of operation.
3440 * A pointer to arguments defined specifically for the operation.
3442 * - (0) if successful.
3443 * - (-ENOTSUP) if hardware doesn't support.
3444 * - (-ENODEV) if *port_id* invalid.
3445 * - (-EIO) if device is removed.
3446 * - others depends on the specific operations implementation.
3449 int rte_eth_dev_filter_ctrl(uint16_t port_id, enum rte_filter_type filter_type,
3450 enum rte_filter_op filter_op, void *arg);
3453 * Get DCB information on an Ethernet device.
3456 * The port identifier of the Ethernet device.
3460 * - (0) if successful.
3461 * - (-ENODEV) if port identifier is invalid.
3462 * - (-EIO) if device is removed.
3463 * - (-ENOTSUP) if hardware doesn't support.
3465 int rte_eth_dev_get_dcb_info(uint16_t port_id,
3466 struct rte_eth_dcb_info *dcb_info);
3468 struct rte_eth_rxtx_callback;
3471 * Add a callback to be called on packet RX on a given port and queue.
3473 * This API configures a function to be called for each burst of
3474 * packets received on a given NIC port queue. The return value is a pointer
3475 * that can be used to later remove the callback using
3476 * rte_eth_remove_rx_callback().
3478 * Multiple functions are called in the order that they are added.
3481 * The port identifier of the Ethernet device.
3483 * The queue on the Ethernet device on which the callback is to be added.
3485 * The callback function
3487 * A generic pointer parameter which will be passed to each invocation of the
3488 * callback function on this port and queue.
3492 * On success, a pointer value which can later be used to remove the callback.
3494 const struct rte_eth_rxtx_callback *
3495 rte_eth_add_rx_callback(uint16_t port_id, uint16_t queue_id,
3496 rte_rx_callback_fn fn, void *user_param);
3499 * Add a callback that must be called first on packet RX on a given port
3502 * This API configures a first function to be called for each burst of
3503 * packets received on a given NIC port queue. The return value is a pointer
3504 * that can be used to later remove the callback using
3505 * rte_eth_remove_rx_callback().
3507 * Multiple functions are called in the order that they are added.
3510 * The port identifier of the Ethernet device.
3512 * The queue on the Ethernet device on which the callback is to be added.
3514 * The callback function
3516 * A generic pointer parameter which will be passed to each invocation of the
3517 * callback function on this port and queue.
3521 * On success, a pointer value which can later be used to remove the callback.
3523 const struct rte_eth_rxtx_callback *
3524 rte_eth_add_first_rx_callback(uint16_t port_id, uint16_t queue_id,
3525 rte_rx_callback_fn fn, void *user_param);
3528 * Add a callback to be called on packet TX on a given port and queue.
3530 * This API configures a function to be called for each burst of
3531 * packets sent on a given NIC port queue. The return value is a pointer
3532 * that can be used to later remove the callback using
3533 * rte_eth_remove_tx_callback().
3535 * Multiple functions are called in the order that they are added.
3538 * The port identifier of the Ethernet device.
3540 * The queue on the Ethernet device on which the callback is to be added.
3542 * The callback function
3544 * A generic pointer parameter which will be passed to each invocation of the
3545 * callback function on this port and queue.
3549 * On success, a pointer value which can later be used to remove the callback.
3551 const struct rte_eth_rxtx_callback *
3552 rte_eth_add_tx_callback(uint16_t port_id, uint16_t queue_id,
3553 rte_tx_callback_fn fn, void *user_param);
3556 * Remove an RX packet callback from a given port and queue.
3558 * This function is used to removed callbacks that were added to a NIC port
3559 * queue using rte_eth_add_rx_callback().
3561 * Note: the callback is removed from the callback list but it isn't freed
3562 * since the it may still be in use. The memory for the callback can be
3563 * subsequently freed back by the application by calling rte_free():
3565 * - Immediately - if the port is stopped, or the user knows that no
3566 * callbacks are in flight e.g. if called from the thread doing RX/TX
3569 * - After a short delay - where the delay is sufficient to allow any
3570 * in-flight callbacks to complete.
3573 * The port identifier of the Ethernet device.
3575 * The queue on the Ethernet device from which the callback is to be removed.
3577 * User supplied callback created via rte_eth_add_rx_callback().
3580 * - 0: Success. Callback was removed.
3581 * - -ENOTSUP: Callback support is not available.
3582 * - -EINVAL: The port_id or the queue_id is out of range, or the callback
3583 * is NULL or not found for the port/queue.
3585 int rte_eth_remove_rx_callback(uint16_t port_id, uint16_t queue_id,
3586 const struct rte_eth_rxtx_callback *user_cb);
3589 * Remove a TX packet callback from a given port and queue.
3591 * This function is used to removed callbacks that were added to a NIC port
3592 * queue using rte_eth_add_tx_callback().
3594 * Note: the callback is removed from the callback list but it isn't freed
3595 * since the it may still be in use. The memory for the callback can be
3596 * subsequently freed back by the application by calling rte_free():
3598 * - Immediately - if the port is stopped, or the user knows that no
3599 * callbacks are in flight e.g. if called from the thread doing RX/TX
3602 * - After a short delay - where the delay is sufficient to allow any
3603 * in-flight callbacks to complete.
3606 * The port identifier of the Ethernet device.
3608 * The queue on the Ethernet device from which the callback is to be removed.
3610 * User supplied callback created via rte_eth_add_tx_callback().
3613 * - 0: Success. Callback was removed.
3614 * - -ENOTSUP: Callback support is not available.
3615 * - -EINVAL: The port_id or the queue_id is out of range, or the callback
3616 * is NULL or not found for the port/queue.
3618 int rte_eth_remove_tx_callback(uint16_t port_id, uint16_t queue_id,
3619 const struct rte_eth_rxtx_callback *user_cb);
3622 * Retrieve information about given port's RX queue.
3625 * The port identifier of the Ethernet device.
3627 * The RX queue on the Ethernet device for which information
3628 * will be retrieved.
3630 * A pointer to a structure of type *rte_eth_rxq_info_info* to be filled with
3631 * the information of the Ethernet device.
3635 * - -ENOTSUP: routine is not supported by the device PMD.
3636 * - -EINVAL: The port_id or the queue_id is out of range.
3638 int rte_eth_rx_queue_info_get(uint16_t port_id, uint16_t queue_id,
3639 struct rte_eth_rxq_info *qinfo);
3642 * Retrieve information about given port's TX queue.
3645 * The port identifier of the Ethernet device.
3647 * The TX queue on the Ethernet device for which information
3648 * will be retrieved.
3650 * A pointer to a structure of type *rte_eth_txq_info_info* to be filled with
3651 * the information of the Ethernet device.
3655 * - -ENOTSUP: routine is not supported by the device PMD.
3656 * - -EINVAL: The port_id or the queue_id is out of range.
3658 int rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
3659 struct rte_eth_txq_info *qinfo);
3662 * Retrieve information about the Rx packet burst mode.
3665 * The port identifier of the Ethernet device.
3667 * The Rx queue on the Ethernet device for which information
3668 * will be retrieved.
3670 * A pointer to a structure of type *rte_eth_burst_mode* to be filled
3671 * with the information of the packet burst mode.
3675 * - -ENOTSUP: routine is not supported by the device PMD.
3676 * - -EINVAL: The port_id or the queue_id is out of range.
3679 int rte_eth_rx_burst_mode_get(uint16_t port_id, uint16_t queue_id,
3680 struct rte_eth_burst_mode *mode);
3683 * Retrieve information about the Tx packet burst mode.
3686 * The port identifier of the Ethernet device.
3688 * The Tx queue on the Ethernet device for which information
3689 * will be retrieved.
3691 * A pointer to a structure of type *rte_eth_burst_mode* to be filled
3692 * with the information of the packet burst mode.
3696 * - -ENOTSUP: routine is not supported by the device PMD.
3697 * - -EINVAL: The port_id or the queue_id is out of range.
3700 int rte_eth_tx_burst_mode_get(uint16_t port_id, uint16_t queue_id,
3701 struct rte_eth_burst_mode *mode);
3704 * Retrieve name about burst mode option.
3707 * The burst mode option of type *rte_eth_burst_mode_option*.
3711 * - "xxx": name of the mode option.
3715 rte_eth_burst_mode_option_name(uint64_t option);
3718 * Retrieve device registers and register attributes (number of registers and
3722 * The port identifier of the Ethernet device.
3724 * Pointer to rte_dev_reg_info structure to fill in. If info->data is
3725 * NULL the function fills in the width and length fields. If non-NULL
3726 * the registers are put into the buffer pointed at by the data field.
3728 * - (0) if successful.
3729 * - (-ENOTSUP) if hardware doesn't support.
3730 * - (-ENODEV) if *port_id* invalid.
3731 * - (-EIO) if device is removed.
3732 * - others depends on the specific operations implementation.
3734 int rte_eth_dev_get_reg_info(uint16_t port_id, struct rte_dev_reg_info *info);
3737 * Retrieve size of device EEPROM
3740 * The port identifier of the Ethernet device.
3742 * - (>=0) EEPROM size if successful.
3743 * - (-ENOTSUP) if hardware doesn't support.
3744 * - (-ENODEV) if *port_id* invalid.
3745 * - (-EIO) if device is removed.
3746 * - others depends on the specific operations implementation.
3748 int rte_eth_dev_get_eeprom_length(uint16_t port_id);
3751 * Retrieve EEPROM and EEPROM attribute
3754 * The port identifier of the Ethernet device.
3756 * The template includes buffer for return EEPROM data and
3757 * EEPROM attributes to be filled.
3759 * - (0) if successful.
3760 * - (-ENOTSUP) if hardware doesn't support.
3761 * - (-ENODEV) if *port_id* invalid.
3762 * - (-EIO) if device is removed.
3763 * - others depends on the specific operations implementation.
3765 int rte_eth_dev_get_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
3768 * Program EEPROM with provided data
3771 * The port identifier of the Ethernet device.
3773 * The template includes EEPROM data for programming and
3774 * EEPROM attributes to be filled
3776 * - (0) if successful.
3777 * - (-ENOTSUP) if hardware doesn't support.
3778 * - (-ENODEV) if *port_id* invalid.
3779 * - (-EIO) if device is removed.
3780 * - others depends on the specific operations implementation.
3782 int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
3786 * @b EXPERIMENTAL: this API may change without prior notice.
3788 * Retrieve the type and size of plugin module EEPROM
3791 * The port identifier of the Ethernet device.
3793 * The type and size of plugin module EEPROM.
3795 * - (0) if successful.
3796 * - (-ENOTSUP) if hardware doesn't support.
3797 * - (-ENODEV) if *port_id* invalid.
3798 * - (-EIO) if device is removed.
3799 * - others depends on the specific operations implementation.
3803 rte_eth_dev_get_module_info(uint16_t port_id,
3804 struct rte_eth_dev_module_info *modinfo);
3808 * @b EXPERIMENTAL: this API may change without prior notice.
3810 * Retrieve the data of plugin module EEPROM
3813 * The port identifier of the Ethernet device.
3815 * The template includes the plugin module EEPROM attributes, and the
3816 * buffer for return plugin module EEPROM data.
3818 * - (0) if successful.
3819 * - (-ENOTSUP) if hardware doesn't support.
3820 * - (-ENODEV) if *port_id* invalid.
3821 * - (-EIO) if device is removed.
3822 * - others depends on the specific operations implementation.
3826 rte_eth_dev_get_module_eeprom(uint16_t port_id,
3827 struct rte_dev_eeprom_info *info);
3830 * Set the list of multicast addresses to filter on an Ethernet device.
3833 * The port identifier of the Ethernet device.
3834 * @param mc_addr_set
3835 * The array of multicast addresses to set. Equal to NULL when the function
3836 * is invoked to flush the set of filtered addresses.
3838 * The number of multicast addresses in the *mc_addr_set* array. Equal to 0
3839 * when the function is invoked to flush the set of filtered addresses.
3841 * - (0) if successful.
3842 * - (-ENODEV) if *port_id* invalid.
3843 * - (-EIO) if device is removed.
3844 * - (-ENOTSUP) if PMD of *port_id* doesn't support multicast filtering.
3845 * - (-ENOSPC) if *port_id* has not enough multicast filtering resources.
3847 int rte_eth_dev_set_mc_addr_list(uint16_t port_id,
3848 struct rte_ether_addr *mc_addr_set,
3849 uint32_t nb_mc_addr);
3852 * Enable IEEE1588/802.1AS timestamping for an Ethernet device.
3855 * The port identifier of the Ethernet device.
3859 * - -ENODEV: The port ID is invalid.
3860 * - -EIO: if device is removed.
3861 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3863 int rte_eth_timesync_enable(uint16_t port_id);
3866 * Disable IEEE1588/802.1AS timestamping for an Ethernet device.
3869 * The port identifier of the Ethernet device.
3873 * - -ENODEV: The port ID is invalid.
3874 * - -EIO: if device is removed.
3875 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3877 int rte_eth_timesync_disable(uint16_t port_id);
3880 * Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.
3883 * The port identifier of the Ethernet device.
3885 * Pointer to the timestamp struct.
3887 * Device specific flags. Used to pass the RX timesync register index to
3888 * i40e. Unused in igb/ixgbe, pass 0 instead.
3892 * - -EINVAL: No timestamp is available.
3893 * - -ENODEV: The port ID is invalid.
3894 * - -EIO: if device is removed.
3895 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3897 int rte_eth_timesync_read_rx_timestamp(uint16_t port_id,
3898 struct timespec *timestamp, uint32_t flags);
3901 * Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.
3904 * The port identifier of the Ethernet device.
3906 * Pointer to the timestamp struct.
3910 * - -EINVAL: No timestamp is available.
3911 * - -ENODEV: The port ID is invalid.
3912 * - -EIO: if device is removed.
3913 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3915 int rte_eth_timesync_read_tx_timestamp(uint16_t port_id,
3916 struct timespec *timestamp);
3919 * Adjust the timesync clock on an Ethernet device.
3921 * This is usually used in conjunction with other Ethdev timesync functions to
3922 * synchronize the device time using the IEEE1588/802.1AS protocol.
3925 * The port identifier of the Ethernet device.
3927 * The adjustment in nanoseconds.
3931 * - -ENODEV: The port ID is invalid.
3932 * - -EIO: if device is removed.
3933 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3935 int rte_eth_timesync_adjust_time(uint16_t port_id, int64_t delta);
3938 * Read the time from the timesync clock on an Ethernet device.
3940 * This is usually used in conjunction with other Ethdev timesync functions to
3941 * synchronize the device time using the IEEE1588/802.1AS protocol.
3944 * The port identifier of the Ethernet device.
3946 * Pointer to the timespec struct that holds the time.
3951 int rte_eth_timesync_read_time(uint16_t port_id, struct timespec *time);
3954 * Set the time of the timesync clock on an Ethernet device.
3956 * This is usually used in conjunction with other Ethdev timesync functions to
3957 * synchronize the device time using the IEEE1588/802.1AS protocol.
3960 * The port identifier of the Ethernet device.
3962 * Pointer to the timespec struct that holds the time.
3966 * - -EINVAL: No timestamp is available.
3967 * - -ENODEV: The port ID is invalid.
3968 * - -EIO: if device is removed.
3969 * - -ENOTSUP: The function is not supported by the Ethernet driver.
3971 int rte_eth_timesync_write_time(uint16_t port_id, const struct timespec *time);
3975 * @b EXPERIMENTAL: this API may change without prior notice.
3977 * Read the current clock counter of an Ethernet device
3979 * This returns the current raw clock value of an Ethernet device. It is
3980 * a raw amount of ticks, with no given time reference.
3981 * The value returned here is from the same clock than the one
3982 * filling timestamp field of Rx packets when using hardware timestamp
3983 * offload. Therefore it can be used to compute a precise conversion of
3984 * the device clock to the real time.
3986 * E.g, a simple heuristic to derivate the frequency would be:
3987 * uint64_t start, end;
3988 * rte_eth_read_clock(port, start);
3989 * rte_delay_ms(100);
3990 * rte_eth_read_clock(port, end);
3991 * double freq = (end - start) * 10;
3993 * Compute a common reference with:
3994 * uint64_t base_time_sec = current_time();
3995 * uint64_t base_clock;
3996 * rte_eth_read_clock(port, base_clock);
3998 * Then, convert the raw mbuf timestamp with:
3999 * base_time_sec + (double)(mbuf->timestamp - base_clock) / freq;
4001 * This simple example will not provide a very good accuracy. One must
4002 * at least measure multiple times the frequency and do a regression.
4003 * To avoid deviation from the system time, the common reference can
4004 * be repeated from time to time. The integer division can also be
4005 * converted by a multiplication and a shift for better performance.
4008 * The port identifier of the Ethernet device.
4010 * Pointer to the uint64_t that holds the raw clock value.
4014 * - -ENODEV: The port ID is invalid.
4015 * - -ENOTSUP: The function is not supported by the Ethernet driver.
4019 rte_eth_read_clock(uint16_t port_id, uint64_t *clock);
4022 * Config l2 tunnel ether type of an Ethernet device for filtering specific
4023 * tunnel packets by ether type.
4026 * The port identifier of the Ethernet device.
4028 * l2 tunnel configuration.
4031 * - (0) if successful.
4032 * - (-ENODEV) if port identifier is invalid.
4033 * - (-EIO) if device is removed.
4034 * - (-ENOTSUP) if hardware doesn't support tunnel type.
4037 rte_eth_dev_l2_tunnel_eth_type_conf(uint16_t port_id,
4038 struct rte_eth_l2_tunnel_conf *l2_tunnel);
4041 * Enable/disable l2 tunnel offload functions. Include,
4042 * 1, The ability of parsing a type of l2 tunnel of an Ethernet device.
4043 * Filtering, forwarding and offloading this type of tunnel packets depend on
4045 * 2, Stripping the l2 tunnel tag.
4046 * 3, Insertion of the l2 tunnel tag.
4047 * 4, Forwarding the packets based on the l2 tunnel tag.
4050 * The port identifier of the Ethernet device.
4052 * l2 tunnel parameters.
4054 * Indicate the offload function.
4056 * Enable or disable this function.
4059 * - (0) if successful.
4060 * - (-ENODEV) if port identifier is invalid.
4061 * - (-EIO) if device is removed.
4062 * - (-ENOTSUP) if hardware doesn't support tunnel type.
4065 rte_eth_dev_l2_tunnel_offload_set(uint16_t port_id,
4066 struct rte_eth_l2_tunnel_conf *l2_tunnel,
4071 * Get the port id from device name. The device name should be specified
4073 * - PCIe address (Domain:Bus:Device.Function), for example- 0000:2:00.0
4074 * - SoC device name, for example- fsl-gmac0
4075 * - vdev dpdk name, for example- net_[pcap0|null0|tap0]
4078 * pci address or name of the device
4080 * pointer to port identifier of the device
4082 * - (0) if successful and port_id is filled.
4083 * - (-ENODEV or -EINVAL) on failure.
4086 rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id);
4089 * Get the device name from port id. The device name is specified as below:
4090 * - PCIe address (Domain:Bus:Device.Function), for example- 0000:02:00.0
4091 * - SoC device name, for example- fsl-gmac0
4092 * - vdev dpdk name, for example- net_[pcap0|null0|tun0|tap0]
4095 * Port identifier of the device.
4097 * Buffer of size RTE_ETH_NAME_MAX_LEN to store the name.
4099 * - (0) if successful.
4100 * - (-EINVAL) on failure.
4103 rte_eth_dev_get_name_by_port(uint16_t port_id, char *name);
4106 * Check that numbers of Rx and Tx descriptors satisfy descriptors limits from
4107 * the ethernet device information, otherwise adjust them to boundaries.
4110 * The port identifier of the Ethernet device.
4112 * A pointer to a uint16_t where the number of receive
4113 * descriptors stored.
4115 * A pointer to a uint16_t where the number of transmit
4116 * descriptors stored.
4118 * - (0) if successful.
4119 * - (-ENOTSUP, -ENODEV or -EINVAL) on failure.
4121 int rte_eth_dev_adjust_nb_rx_tx_desc(uint16_t port_id,
4122 uint16_t *nb_rx_desc,
4123 uint16_t *nb_tx_desc);
4126 * Test if a port supports specific mempool ops.
4129 * Port identifier of the Ethernet device.
4131 * The name of the pool operations to test.
4133 * - 0: best mempool ops choice for this port.
4134 * - 1: mempool ops are supported for this port.
4135 * - -ENOTSUP: mempool ops not supported for this port.
4136 * - -ENODEV: Invalid port Identifier.
4137 * - -EINVAL: Pool param is null.
4140 rte_eth_dev_pool_ops_supported(uint16_t port_id, const char *pool);
4143 * Get the security context for the Ethernet device.
4146 * Port identifier of the Ethernet device
4149 * - pointer to security context on success.
4152 rte_eth_dev_get_sec_ctx(uint16_t port_id);
4155 #include <rte_ethdev_core.h>
4159 * Retrieve a burst of input packets from a receive queue of an Ethernet
4160 * device. The retrieved packets are stored in *rte_mbuf* structures whose
4161 * pointers are supplied in the *rx_pkts* array.
4163 * The rte_eth_rx_burst() function loops, parsing the RX ring of the
4164 * receive queue, up to *nb_pkts* packets, and for each completed RX
4165 * descriptor in the ring, it performs the following operations:
4167 * - Initialize the *rte_mbuf* data structure associated with the
4168 * RX descriptor according to the information provided by the NIC into
4169 * that RX descriptor.
4171 * - Store the *rte_mbuf* data structure into the next entry of the
4174 * - Replenish the RX descriptor with a new *rte_mbuf* buffer
4175 * allocated from the memory pool associated with the receive queue at
4176 * initialization time.
4178 * When retrieving an input packet that was scattered by the controller
4179 * into multiple receive descriptors, the rte_eth_rx_burst() function
4180 * appends the associated *rte_mbuf* buffers to the first buffer of the
4183 * The rte_eth_rx_burst() function returns the number of packets
4184 * actually retrieved, which is the number of *rte_mbuf* data structures
4185 * effectively supplied into the *rx_pkts* array.
4186 * A return value equal to *nb_pkts* indicates that the RX queue contained
4187 * at least *rx_pkts* packets, and this is likely to signify that other
4188 * received packets remain in the input queue. Applications implementing
4189 * a "retrieve as much received packets as possible" policy can check this
4190 * specific case and keep invoking the rte_eth_rx_burst() function until
4191 * a value less than *nb_pkts* is returned.
4193 * This receive method has the following advantages:
4195 * - It allows a run-to-completion network stack engine to retrieve and
4196 * to immediately process received packets in a fast burst-oriented
4197 * approach, avoiding the overhead of unnecessary intermediate packet
4198 * queue/dequeue operations.
4200 * - Conversely, it also allows an asynchronous-oriented processing
4201 * method to retrieve bursts of received packets and to immediately
4202 * queue them for further parallel processing by another logical core,
4203 * for instance. However, instead of having received packets being
4204 * individually queued by the driver, this approach allows the caller
4205 * of the rte_eth_rx_burst() function to queue a burst of retrieved
4206 * packets at a time and therefore dramatically reduce the cost of
4207 * enqueue/dequeue operations per packet.
4209 * - It allows the rte_eth_rx_burst() function of the driver to take
4210 * advantage of burst-oriented hardware features (CPU cache,
4211 * prefetch instructions, and so on) to minimize the number of CPU
4212 * cycles per packet.
4214 * To summarize, the proposed receive API enables many
4215 * burst-oriented optimizations in both synchronous and asynchronous
4216 * packet processing environments with no overhead in both cases.
4218 * The rte_eth_rx_burst() function does not provide any error
4219 * notification to avoid the corresponding overhead. As a hint, the
4220 * upper-level application might check the status of the device link once
4221 * being systematically returned a 0 value for a given number of tries.
4224 * The port identifier of the Ethernet device.
4226 * The index of the receive queue from which to retrieve input packets.
4227 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
4228 * to rte_eth_dev_configure().
4230 * The address of an array of pointers to *rte_mbuf* structures that
4231 * must be large enough to store *nb_pkts* pointers in it.
4233 * The maximum number of packets to retrieve.
4235 * The number of packets actually retrieved, which is the number
4236 * of pointers to *rte_mbuf* structures effectively supplied to the
4239 static inline uint16_t
4240 rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
4241 struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
4243 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4246 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4247 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
4248 RTE_FUNC_PTR_OR_ERR_RET(*dev->rx_pkt_burst, 0);
4250 if (queue_id >= dev->data->nb_rx_queues) {
4251 RTE_ETHDEV_LOG(ERR, "Invalid RX queue_id=%u\n", queue_id);
4255 nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
4258 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
4259 if (unlikely(dev->post_rx_burst_cbs[queue_id] != NULL)) {
4260 struct rte_eth_rxtx_callback *cb =
4261 dev->post_rx_burst_cbs[queue_id];
4264 nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
4265 nb_pkts, cb->param);
4267 } while (cb != NULL);
4275 * Get the number of used descriptors of a rx queue
4278 * The port identifier of the Ethernet device.
4280 * The queue id on the specific port.
4282 * The number of used descriptors in the specific queue, or:
4283 * (-EINVAL) if *port_id* or *queue_id* is invalid
4284 * (-ENOTSUP) if the device does not support this function
4287 rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
4289 struct rte_eth_dev *dev;
4291 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -EINVAL);
4292 dev = &rte_eth_devices[port_id];
4293 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
4294 if (queue_id >= dev->data->nb_rx_queues)
4297 return (int)(*dev->dev_ops->rx_queue_count)(dev, queue_id);
4301 * Check if the DD bit of the specific RX descriptor in the queue has been set
4304 * The port identifier of the Ethernet device.
4306 * The queue id on the specific port.
4308 * The offset of the descriptor ID from tail.
4310 * - (1) if the specific DD bit is set.
4311 * - (0) if the specific DD bit is not set.
4312 * - (-ENODEV) if *port_id* invalid.
4313 * - (-ENOTSUP) if the device does not support this function
4316 rte_eth_rx_descriptor_done(uint16_t port_id, uint16_t queue_id, uint16_t offset)
4318 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4319 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4320 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_done, -ENOTSUP);
4321 return (*dev->dev_ops->rx_descriptor_done)( \
4322 dev->data->rx_queues[queue_id], offset);
4325 #define RTE_ETH_RX_DESC_AVAIL 0 /**< Desc available for hw. */
4326 #define RTE_ETH_RX_DESC_DONE 1 /**< Desc done, filled by hw. */
4327 #define RTE_ETH_RX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
4330 * Check the status of a Rx descriptor in the queue
4332 * It should be called in a similar context than the Rx function:
4333 * - on a dataplane core
4334 * - not concurrently on the same queue
4336 * Since it's a dataplane function, no check is performed on port_id and
4337 * queue_id. The caller must therefore ensure that the port is enabled
4338 * and the queue is configured and running.
4340 * Note: accessing to a random descriptor in the ring may trigger cache
4341 * misses and have a performance impact.
4344 * A valid port identifier of the Ethernet device which.
4346 * A valid Rx queue identifier on this port.
4348 * The offset of the descriptor starting from tail (0 is the next
4349 * packet to be received by the driver).
4352 * - (RTE_ETH_RX_DESC_AVAIL): Descriptor is available for the hardware to
4354 * - (RTE_ETH_RX_DESC_DONE): Descriptor is done, it is filled by hw, but
4355 * not yet processed by the driver (i.e. in the receive queue).
4356 * - (RTE_ETH_RX_DESC_UNAVAIL): Descriptor is unavailable, either hold by
4357 * the driver and not yet returned to hw, or reserved by the hw.
4358 * - (-EINVAL) bad descriptor offset.
4359 * - (-ENOTSUP) if the device does not support this function.
4360 * - (-ENODEV) bad port or queue (only if compiled with debug).
4363 rte_eth_rx_descriptor_status(uint16_t port_id, uint16_t queue_id,
4366 struct rte_eth_dev *dev;
4369 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4370 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4372 dev = &rte_eth_devices[port_id];
4373 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4374 if (queue_id >= dev->data->nb_rx_queues)
4377 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_descriptor_status, -ENOTSUP);
4378 rxq = dev->data->rx_queues[queue_id];
4380 return (*dev->dev_ops->rx_descriptor_status)(rxq, offset);
4383 #define RTE_ETH_TX_DESC_FULL 0 /**< Desc filled for hw, waiting xmit. */
4384 #define RTE_ETH_TX_DESC_DONE 1 /**< Desc done, packet is transmitted. */
4385 #define RTE_ETH_TX_DESC_UNAVAIL 2 /**< Desc used by driver or hw. */
4388 * Check the status of a Tx descriptor in the queue.
4390 * It should be called in a similar context than the Tx function:
4391 * - on a dataplane core
4392 * - not concurrently on the same queue
4394 * Since it's a dataplane function, no check is performed on port_id and
4395 * queue_id. The caller must therefore ensure that the port is enabled
4396 * and the queue is configured and running.
4398 * Note: accessing to a random descriptor in the ring may trigger cache
4399 * misses and have a performance impact.
4402 * A valid port identifier of the Ethernet device which.
4404 * A valid Tx queue identifier on this port.
4406 * The offset of the descriptor starting from tail (0 is the place where
4407 * the next packet will be send).
4410 * - (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e.
4411 * in the transmit queue.
4412 * - (RTE_ETH_TX_DESC_DONE) Hardware is done with this descriptor, it can
4413 * be reused by the driver.
4414 * - (RTE_ETH_TX_DESC_UNAVAIL): Descriptor is unavailable, reserved by the
4415 * driver or the hardware.
4416 * - (-EINVAL) bad descriptor offset.
4417 * - (-ENOTSUP) if the device does not support this function.
4418 * - (-ENODEV) bad port or queue (only if compiled with debug).
4420 static inline int rte_eth_tx_descriptor_status(uint16_t port_id,
4421 uint16_t queue_id, uint16_t offset)
4423 struct rte_eth_dev *dev;
4426 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4427 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
4429 dev = &rte_eth_devices[port_id];
4430 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4431 if (queue_id >= dev->data->nb_tx_queues)
4434 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_descriptor_status, -ENOTSUP);
4435 txq = dev->data->tx_queues[queue_id];
4437 return (*dev->dev_ops->tx_descriptor_status)(txq, offset);
4441 * Send a burst of output packets on a transmit queue of an Ethernet device.
4443 * The rte_eth_tx_burst() function is invoked to transmit output packets
4444 * on the output queue *queue_id* of the Ethernet device designated by its
4446 * The *nb_pkts* parameter is the number of packets to send which are
4447 * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
4448 * allocated from a pool created with rte_pktmbuf_pool_create().
4449 * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
4450 * up to the number of transmit descriptors available in the TX ring of the
4452 * For each packet to send, the rte_eth_tx_burst() function performs
4453 * the following operations:
4455 * - Pick up the next available descriptor in the transmit ring.
4457 * - Free the network buffer previously sent with that descriptor, if any.
4459 * - Initialize the transmit descriptor with the information provided
4460 * in the *rte_mbuf data structure.
4462 * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
4463 * the rte_eth_tx_burst() function uses several transmit descriptors
4466 * The rte_eth_tx_burst() function returns the number of packets it
4467 * actually sent. A return value equal to *nb_pkts* means that all packets
4468 * have been sent, and this is likely to signify that other output packets
4469 * could be immediately transmitted again. Applications that implement a
4470 * "send as many packets to transmit as possible" policy can check this
4471 * specific case and keep invoking the rte_eth_tx_burst() function until
4472 * a value less than *nb_pkts* is returned.
4474 * It is the responsibility of the rte_eth_tx_burst() function to
4475 * transparently free the memory buffers of packets previously sent.
4476 * This feature is driven by the *tx_free_thresh* value supplied to the
4477 * rte_eth_dev_configure() function at device configuration time.
4478 * When the number of free TX descriptors drops below this threshold, the
4479 * rte_eth_tx_burst() function must [attempt to] free the *rte_mbuf* buffers
4480 * of those packets whose transmission was effectively completed.
4482 * If the PMD is DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can
4483 * invoke this function concurrently on the same tx queue without SW lock.
4484 * @see rte_eth_dev_info_get, struct rte_eth_txconf::offloads
4486 * @see rte_eth_tx_prepare to perform some prior checks or adjustments
4490 * The port identifier of the Ethernet device.
4492 * The index of the transmit queue through which output packets must be
4494 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4495 * to rte_eth_dev_configure().
4497 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
4498 * which contain the output packets.
4500 * The maximum number of packets to transmit.
4502 * The number of output packets actually stored in transmit descriptors of
4503 * the transmit ring. The return value can be less than the value of the
4504 * *tx_pkts* parameter when the transmit ring is full or has been filled up.
4506 static inline uint16_t
4507 rte_eth_tx_burst(uint16_t port_id, uint16_t queue_id,
4508 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4510 struct rte_eth_dev *dev = &rte_eth_devices[port_id];
4512 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4513 RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
4514 RTE_FUNC_PTR_OR_ERR_RET(*dev->tx_pkt_burst, 0);
4516 if (queue_id >= dev->data->nb_tx_queues) {
4517 RTE_ETHDEV_LOG(ERR, "Invalid TX queue_id=%u\n", queue_id);
4522 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
4523 struct rte_eth_rxtx_callback *cb = dev->pre_tx_burst_cbs[queue_id];
4525 if (unlikely(cb != NULL)) {
4527 nb_pkts = cb->fn.tx(port_id, queue_id, tx_pkts, nb_pkts,
4530 } while (cb != NULL);
4534 return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
4538 * Process a burst of output packets on a transmit queue of an Ethernet device.
4540 * The rte_eth_tx_prepare() function is invoked to prepare output packets to be
4541 * transmitted on the output queue *queue_id* of the Ethernet device designated
4543 * The *nb_pkts* parameter is the number of packets to be prepared which are
4544 * supplied in the *tx_pkts* array of *rte_mbuf* structures, each of them
4545 * allocated from a pool created with rte_pktmbuf_pool_create().
4546 * For each packet to send, the rte_eth_tx_prepare() function performs
4547 * the following operations:
4549 * - Check if packet meets devices requirements for tx offloads.
4551 * - Check limitations about number of segments.
4553 * - Check additional requirements when debug is enabled.
4555 * - Update and/or reset required checksums when tx offload is set for packet.
4557 * Since this function can modify packet data, provided mbufs must be safely
4558 * writable (e.g. modified data cannot be in shared segment).
4560 * The rte_eth_tx_prepare() function returns the number of packets ready to be
4561 * sent. A return value equal to *nb_pkts* means that all packets are valid and
4562 * ready to be sent, otherwise stops processing on the first invalid packet and
4563 * leaves the rest packets untouched.
4565 * When this functionality is not implemented in the driver, all packets are
4566 * are returned untouched.
4569 * The port identifier of the Ethernet device.
4570 * The value must be a valid port id.
4572 * The index of the transmit queue through which output packets must be
4574 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4575 * to rte_eth_dev_configure().
4577 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
4578 * which contain the output packets.
4580 * The maximum number of packets to process.
4582 * The number of packets correct and ready to be sent. The return value can be
4583 * less than the value of the *tx_pkts* parameter when some packet doesn't
4584 * meet devices requirements with rte_errno set appropriately:
4585 * - EINVAL: offload flags are not correctly set
4586 * - ENOTSUP: the offload feature is not supported by the hardware
4590 #ifndef RTE_ETHDEV_TX_PREPARE_NOOP
4592 static inline uint16_t
4593 rte_eth_tx_prepare(uint16_t port_id, uint16_t queue_id,
4594 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4596 struct rte_eth_dev *dev;
4598 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4599 if (!rte_eth_dev_is_valid_port(port_id)) {
4600 RTE_ETHDEV_LOG(ERR, "Invalid TX port_id=%u\n", port_id);
4606 dev = &rte_eth_devices[port_id];
4608 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
4609 if (queue_id >= dev->data->nb_tx_queues) {
4610 RTE_ETHDEV_LOG(ERR, "Invalid TX queue_id=%u\n", queue_id);
4616 if (!dev->tx_pkt_prepare)
4619 return (*dev->tx_pkt_prepare)(dev->data->tx_queues[queue_id],
4626 * Native NOOP operation for compilation targets which doesn't require any
4627 * preparations steps, and functional NOOP may introduce unnecessary performance
4630 * Generally this is not a good idea to turn it on globally and didn't should
4631 * be used if behavior of tx_preparation can change.
4634 static inline uint16_t
4635 rte_eth_tx_prepare(__rte_unused uint16_t port_id,
4636 __rte_unused uint16_t queue_id,
4637 __rte_unused struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
4645 * Send any packets queued up for transmission on a port and HW queue
4647 * This causes an explicit flush of packets previously buffered via the
4648 * rte_eth_tx_buffer() function. It returns the number of packets successfully
4649 * sent to the NIC, and calls the error callback for any unsent packets. Unless
4650 * explicitly set up otherwise, the default callback simply frees the unsent
4651 * packets back to the owning mempool.
4654 * The port identifier of the Ethernet device.
4656 * The index of the transmit queue through which output packets must be
4658 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4659 * to rte_eth_dev_configure().
4661 * Buffer of packets to be transmit.
4663 * The number of packets successfully sent to the Ethernet device. The error
4664 * callback is called for any packets which could not be sent.
4666 static inline uint16_t
4667 rte_eth_tx_buffer_flush(uint16_t port_id, uint16_t queue_id,
4668 struct rte_eth_dev_tx_buffer *buffer)
4671 uint16_t to_send = buffer->length;
4676 sent = rte_eth_tx_burst(port_id, queue_id, buffer->pkts, to_send);
4680 /* All packets sent, or to be dealt with by callback below */
4681 if (unlikely(sent != to_send))
4682 buffer->error_callback(&buffer->pkts[sent],
4683 (uint16_t)(to_send - sent),
4684 buffer->error_userdata);
4690 * Buffer a single packet for future transmission on a port and queue
4692 * This function takes a single mbuf/packet and buffers it for later
4693 * transmission on the particular port and queue specified. Once the buffer is
4694 * full of packets, an attempt will be made to transmit all the buffered
4695 * packets. In case of error, where not all packets can be transmitted, a
4696 * callback is called with the unsent packets as a parameter. If no callback
4697 * is explicitly set up, the unsent packets are just freed back to the owning
4698 * mempool. The function returns the number of packets actually sent i.e.
4699 * 0 if no buffer flush occurred, otherwise the number of packets successfully
4703 * The port identifier of the Ethernet device.
4705 * The index of the transmit queue through which output packets must be
4707 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
4708 * to rte_eth_dev_configure().
4710 * Buffer used to collect packets to be sent.
4712 * Pointer to the packet mbuf to be sent.
4714 * 0 = packet has been buffered for later transmission
4715 * N > 0 = packet has been buffered, and the buffer was subsequently flushed,
4716 * causing N packets to be sent, and the error callback to be called for
4719 static __rte_always_inline uint16_t
4720 rte_eth_tx_buffer(uint16_t port_id, uint16_t queue_id,
4721 struct rte_eth_dev_tx_buffer *buffer, struct rte_mbuf *tx_pkt)
4723 buffer->pkts[buffer->length++] = tx_pkt;
4724 if (buffer->length < buffer->size)
4727 return rte_eth_tx_buffer_flush(port_id, queue_id, buffer);
4734 #endif /* _RTE_ETHDEV_H_ */