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33 * version: DPDK.L.1.2.3-3
36 #ifndef _RTE_ETHDEV_H_
37 #define _RTE_ETHDEV_H_
42 * RTE Ethernet Device API
44 * The Ethernet Device API is composed of two parts:
46 * - The application-oriented Ethernet API that includes functions to setup
47 * an Ethernet device (configure it, setup its RX and TX queues and start it),
48 * to get its MAC address, the speed and the status of its physical link,
49 * to receive and to transmit packets, and so on.
51 * - The driver-oriented Ethernet API that exports a function allowing
52 * an Ethernet Poll Mode Driver (PMD) to simultaneously register itself as
53 * an Ethernet device driver and as a PCI driver for a set of matching PCI
54 * [Ethernet] devices classes.
56 * By default, all the functions of the Ethernet Device API exported by a PMD
57 * are lock-free functions which assume to not be invoked in parallel on
58 * different logical cores to work on the same target object. For instance,
59 * the receive function of a PMD cannot be invoked in parallel on two logical
60 * cores to poll the same RX queue [of the same port]. Of course, this function
61 * can be invoked in parallel by different logical cores on different RX queues.
62 * It is the responsibility of the upper level application to enforce this rule.
64 * If needed, parallel accesses by multiple logical cores to shared queues
65 * shall be explicitly protected by dedicated inline lock-aware functions
66 * built on top of their corresponding lock-free functions of the PMD API.
68 * In all functions of the Ethernet API, the Ethernet device is
69 * designated by an integer >= 0 named the device port identifier.
71 * At the Ethernet driver level, Ethernet devices are represented by a generic
72 * data structure of type *rte_eth_dev*.
74 * Ethernet devices are dynamically registered during the PCI probing phase
75 * performed at EAL initialization time.
76 * When an Ethernet device is being probed, an *rte_eth_dev* structure and
77 * a new port identifier are allocated for that device. Then, the eth_dev_init()
78 * function supplied by the Ethernet driver matching the probed PCI
79 * device is invoked to properly initialize the device.
81 * The role of the device init function consists of resetting the hardware,
82 * checking access to Non-volatile Memory (NVM), reading the MAC address
85 * If the device init operation is successful, the correspondence between
86 * the port identifier assigned to the new device and its associated
87 * *rte_eth_dev* structure is effectively registered.
88 * Otherwise, both the *rte_eth_dev* structure and the port identifier are
91 * The functions exported by the application Ethernet API to setup a device
92 * designated by its port identifier must be invoked in the following order:
93 * - rte_eth_dev_configure()
94 * - rte_eth_tx_queue_setup()
95 * - rte_eth_rx_queue_setup()
96 * - rte_eth_dev_start()
98 * Then, the network application can invoke, in any order, the functions
99 * exported by the Ethernet API to get the MAC address of a given device, to
100 * get the speed and the status of a device physical link, to receive/transmit
101 * [burst of] packets, and so on.
103 * If the application wants to change the configuration (i.e. call
104 * rte_eth_dev_configure(), rte_eth_tx_queue_setup(), or
105 * rte_eth_rx_queue_setup()), it must call rte_eth_dev_stop() first to stop the
106 * device and then do the reconfiguration before calling rte_eth_dev_start()
107 * again. The tramsit and receive functions should not be invoked when the
110 * Please note that some configuration is not stored between calls to
111 * rte_eth_dev_stop()/rte_eth_dev_start(). The following configuration will
114 * - flow control settings
115 * - receive mode configuration (promiscuous mode, hardware checksum mode,
116 * RSS/VMDQ settings etc.)
117 * - VLAN filtering configuration
118 * - MAC addresses supplied to MAC address array
119 * - flow director filtering mode (but not filtering rules)
121 * Any other configuration will not be stored and will need to be re-entered
122 * after a call to rte_eth_dev_start().
125 * Finally, a network application can close an Ethernet device by invoking the
126 * rte_eth_dev_close() function.
128 * Each function of the application Ethernet API invokes a specific function
129 * of the PMD that controls the target device designated by its port
131 * For this purpose, all device-specific functions of an Ethernet driver are
132 * supplied through a set of pointers contained in a generic structure of type
134 * The address of the *eth_dev_ops* structure is stored in the *rte_eth_dev*
135 * structure by the device init function of the Ethernet driver, which is
136 * invoked during the PCI probing phase, as explained earlier.
138 * In other words, each function of the Ethernet API simply retrieves the
139 * *rte_eth_dev* structure associated with the device port identifier and
140 * performs an indirect invocation of the corresponding driver function
141 * supplied in the *eth_dev_ops* structure of the *rte_eth_dev* structure.
143 * For performance reasons, the address of the burst-oriented RX and TX
144 * functions of the Ethernet driver are not contained in the *eth_dev_ops*
145 * structure. Instead, they are directly stored at the beginning of the
146 * *rte_eth_dev* structure to avoid an extra indirect memory access during
149 * RTE ethernet device drivers do not use interrupts for transmitting or
150 * receiving. Instead, Ethernet drivers export Poll-Mode receive and transmit
151 * functions to applications.
152 * Both receive and transmit functions are packet-burst oriented to minimize
153 * their cost per packet through the following optimizations:
155 * - Sharing among multiple packets the incompressible cost of the
156 * invocation of receive/transmit functions.
158 * - Enabling receive/transmit functions to take advantage of burst-oriented
159 * hardware features (L1 cache, prefetch instructions, NIC head/tail
160 * registers) to minimize the number of CPU cycles per packet, for instance,
161 * by avoiding useless read memory accesses to ring descriptors, or by
162 * systematically using arrays of pointers that exactly fit L1 cache line
163 * boundaries and sizes.
165 * The burst-oriented receive function does not provide any error notification,
166 * to avoid the corresponding overhead. As a hint, the upper-level application
167 * might check the status of the device link once being systematically returned
168 * a 0 value by the receive function of the driver for a given number of tries.
178 #include <rte_interrupts.h>
180 #include <rte_mbuf.h>
181 #include "rte_ether.h"
184 * A structure used to retrieve statistics for an Ethernet port.
186 struct rte_eth_stats {
187 uint64_t ipackets; /**< Total number of successfully received packets. */
188 uint64_t opackets; /**< Total number of successfully transmitted packets.*/
189 uint64_t ibytes; /**< Total number of successfully received bytes. */
190 uint64_t obytes; /**< Total number of successfully transmitted bytes. */
191 uint64_t ierrors; /**< Total number of erroneous received packets. */
192 uint64_t oerrors; /**< Total number of failed transmitted packets. */
193 uint64_t imcasts; /**< Total number of multicast received packets. */
194 uint64_t rx_nombuf; /**< Total number of RX mbuf allocation failures. */
195 uint64_t fdirmatch; /**< Total number of RX packets matching a filter. */
196 uint64_t fdirmiss; /**< Total number of RX packets not matching any filter. */
200 * A structure used to retrieve link-level information of an Ethernet port.
202 struct rte_eth_link {
203 uint16_t link_speed; /**< ETH_LINK_SPEED_[10, 100, 1000, 10000] */
204 uint16_t link_duplex; /**< ETH_LINK_[HALF_DUPLEX, FULL_DUPLEX] */
205 uint8_t link_status : 1; /**< 1 -> link up, 0 -> link down */
206 }__attribute__((aligned(8))); /**< aligned for atomic64 read/write */
208 #define ETH_LINK_SPEED_AUTONEG 0 /**< Auto-negotiate link speed. */
209 #define ETH_LINK_SPEED_10 10 /**< 10 megabits/second. */
210 #define ETH_LINK_SPEED_100 100 /**< 100 megabits/second. */
211 #define ETH_LINK_SPEED_1000 1000 /**< 1 gigabits/second. */
212 #define ETH_LINK_SPEED_10000 10000 /**< 10 gigabits/second. */
214 #define ETH_LINK_AUTONEG_DUPLEX 0 /**< Auto-negotiate duplex. */
215 #define ETH_LINK_HALF_DUPLEX 1 /**< Half-duplex connection. */
216 #define ETH_LINK_FULL_DUPLEX 2 /**< Full-duplex connection. */
219 * A structure used to configure the ring threshold registers of an RX/TX
220 * queue for an Ethernet port.
222 struct rte_eth_thresh {
223 uint8_t pthresh; /**< Ring prefetch threshold. */
224 uint8_t hthresh; /**< Ring host threshold. */
225 uint8_t wthresh; /**< Ring writeback threshold. */
229 * A set of values to identify what method is to be used to route
230 * packets to multiple queues.
232 enum rte_eth_rx_mq_mode {
233 ETH_RSS = 0, /**< Default to RSS mode */
234 ETH_VMDQ_DCB /**< Use VMDQ+DCB to route traffic to queues */
238 * A structure used to configure the RX features of an Ethernet port.
240 struct rte_eth_rxmode {
241 /** The multi-queue packet distribution mode to be used, e.g. RSS. */
242 enum rte_eth_rx_mq_mode mq_mode;
243 uint32_t max_rx_pkt_len; /**< Only used if jumbo_frame enabled. */
244 uint16_t split_hdr_size; /**< hdr buf size (header_split enabled).*/
245 uint8_t header_split : 1, /**< Header Split enable. */
246 hw_ip_checksum : 1, /**< IP/UDP/TCP checksum offload enable. */
247 hw_vlan_filter : 1, /**< VLAN filter enable. */
248 jumbo_frame : 1, /**< Jumbo Frame Receipt enable. */
249 hw_strip_crc : 1; /**< Enable CRC stripping by hardware. */
253 * A structure used to configure the Receive Side Scaling (RSS) feature
254 * of an Ethernet port.
255 * If not NULL, the *rss_key* pointer of the *rss_conf* structure points
256 * to an array of 40 bytes holding the RSS key to use for hashing specific
257 * header fields of received packets.
258 * Otherwise, a default random hash key is used by the device driver.
260 * The *rss_hf* field of the *rss_conf* structure indicates the different
261 * types of IPv4/IPv6 packets to which the RSS hashing must be applied.
262 * Supplying an *rss_hf* equal to zero disables the RSS feature.
264 struct rte_eth_rss_conf {
265 uint8_t *rss_key; /**< If not NULL, 40-byte hash key. */
266 uint16_t rss_hf; /**< Hash functions to apply - see below. */
269 #define ETH_RSS_IPV4 0x0001 /**< IPv4 packet. */
270 #define ETH_RSS_IPV4_TCP 0x0002 /**< IPv4/TCP packet. */
271 #define ETH_RSS_IPV6 0x0004 /**< IPv6 packet. */
272 #define ETH_RSS_IPV6_EX 0x0008 /**< IPv6 packet with extension headers.*/
273 #define ETH_RSS_IPV6_TCP 0x0010 /**< IPv6/TCP packet. */
274 #define ETH_RSS_IPV6_TCP_EX 0x0020 /**< IPv6/TCP with extension headers. */
275 /* Intel RSS extensions to UDP packets */
276 #define ETH_RSS_IPV4_UDP 0x0040 /**< IPv4/UDP packet. */
277 #define ETH_RSS_IPV6_UDP 0x0080 /**< IPv6/UDP packet. */
278 #define ETH_RSS_IPV6_UDP_EX 0x0100 /**< IPv6/UDP with extension headers. */
280 /* Definitions used for VMDQ and DCB functionality */
281 #define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters. */
282 #define ETH_DCB_NUM_USER_PRIORITIES 8 /**< Maximum nb. of DCB priorities. */
283 #define ETH_VMDQ_DCB_NUM_QUEUES 128 /**< Maximum nb. of VMDQ DCB queues. */
286 * This enum indicates the possible number of queue pools
287 * in VMDQ+DCB configurations.
289 enum rte_eth_nb_pools {
290 ETH_16_POOLS = 16, /**< 16 pools with DCB. */
291 ETH_32_POOLS = 32 /**< 32 pools with DCB. */
295 * A structure used to configure the VMDQ+DCB feature
296 * of an Ethernet port.
298 * Using this feature, packets are routed to a pool of queues, based
299 * on the vlan id in the vlan tag, and then to a specific queue within
300 * that pool, using the user priority vlan tag field.
302 * A default pool may be used, if desired, to route all traffic which
303 * does not match the vlan filter rules.
305 struct rte_eth_vmdq_dcb_conf {
306 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
307 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
308 uint8_t default_pool; /**< The default pool, if applicable */
309 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
311 uint16_t vlan_id; /**< The vlan id of the received frame */
312 uint64_t pools; /**< Bitmask of pools for packet rx */
313 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
314 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
315 /**< Selects a queue in a pool */
319 * A structure used to configure the TX features of an Ethernet port.
320 * For future extensions.
322 struct rte_eth_txmode {
326 * A structure used to configure an RX ring of an Ethernet port.
328 struct rte_eth_rxconf {
329 struct rte_eth_thresh rx_thresh; /**< RX ring threshold registers. */
330 uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
334 * A structure used to configure a TX ring of an Ethernet port.
336 struct rte_eth_txconf {
337 struct rte_eth_thresh tx_thresh; /**< TX ring threshold registers. */
338 uint16_t tx_rs_thresh; /**< Drives the setting of RS bit on TXDs. */
339 uint16_t tx_free_thresh; /**< Drives the freeing of TX buffers. */
343 * This enum indicates the flow control mode
345 enum rte_eth_fc_mode {
346 RTE_FC_NONE = 0, /**< Disable flow control. */
347 RTE_FC_RX_PAUSE, /**< RX pause frame, enable flowctrl on TX side. */
348 RTE_FC_TX_PAUSE, /**< TX pause frame, enable flowctrl on RX side. */
349 RTE_FC_FULL /**< Enable flow control on both side. */
353 * A structure used to configure Ethernet flow control parameter.
354 * These parameters will be configured into the register of the NIC.
355 * Please refer to the corresponding data sheet for proper value.
357 struct rte_eth_fc_conf {
358 uint32_t high_water; /**< High threshold value to trigger XOFF */
359 uint32_t low_water; /**< Low threshold value to trigger XON */
360 uint16_t pause_time; /**< Pause quota in the Pause frame */
361 uint16_t send_xon; /**< Is XON frame need be sent */
362 enum rte_eth_fc_mode mode; /**< Link flow control mode */
366 * Flow Director setting modes: none (default), signature or perfect.
369 RTE_FDIR_MODE_NONE = 0, /**< Disable FDIR support. */
370 RTE_FDIR_MODE_SIGNATURE, /**< Enable FDIR signature filter mode. */
371 RTE_FDIR_MODE_PERFECT, /**< Enable FDIR perfect filter mode. */
375 * Memory space that can be configured to store Flow Director filters
376 * in the board memory.
378 enum rte_fdir_pballoc_type {
379 RTE_FDIR_PBALLOC_64K = 0, /**< 64k. */
380 RTE_FDIR_PBALLOC_128K, /**< 128k. */
381 RTE_FDIR_PBALLOC_256K, /**< 256k. */
385 * Select report mode of FDIR hash information in RX descriptors.
387 enum rte_fdir_status_mode {
388 RTE_FDIR_NO_REPORT_STATUS = 0, /**< Never report FDIR hash. */
389 RTE_FDIR_REPORT_STATUS, /**< Only report FDIR hash for matching pkts. */
390 RTE_FDIR_REPORT_STATUS_ALWAYS, /**< Always report FDIR hash. */
394 * A structure used to configure the Flow Director (FDIR) feature
395 * of an Ethernet port.
397 * If mode is RTE_FDIR_DISABLE, the pballoc value is ignored.
399 struct rte_fdir_conf {
400 enum rte_fdir_mode mode; /**< Flow Director mode. */
401 enum rte_fdir_pballoc_type pballoc; /**< Space for FDIR filters. */
402 enum rte_fdir_status_mode status; /**< How to report FDIR hash. */
403 /* Offset of flexbytes field in RX packets (in 16-bit word units). */
404 uint8_t flexbytes_offset;
405 /* RX queue of packets matching a "drop" filter in perfect mode. */
410 * Possible l4type of FDIR filters.
413 RTE_FDIR_L4TYPE_NONE = 0, /**< Nnoe. */
414 RTE_FDIR_L4TYPE_UDP, /**< UDP. */
415 RTE_FDIR_L4TYPE_TCP, /**< TCP. */
416 RTE_FDIR_L4TYPE_SCTP, /**< SCTP. */
420 * Select IPv4 or IPv6 FDIR filters.
423 RTE_FDIR_IPTYPE_IPV4 = 0, /**< IPv4. */
424 RTE_FDIR_IPTYPE_IPV6 , /**< IPv6. */
428 * A structure used to define a FDIR packet filter.
430 struct rte_fdir_filter {
431 uint16_t flex_bytes; /**< Flex bytes value to match. */
432 uint16_t vlan_id; /**< VLAN ID value to match, 0 otherwise. */
433 uint16_t port_src; /**< Source port to match, 0 otherwise. */
434 uint16_t port_dst; /**< Destination port to match, 0 otherwise. */
436 uint32_t ipv4_addr; /**< IPv4 source address to match. */
437 uint32_t ipv6_addr[4]; /**< IPv6 source address to match. */
438 } ip_src; /**< IPv4/IPv6 source address to match (union of above). */
440 uint32_t ipv4_addr; /**< IPv4 destination address to match. */
441 uint32_t ipv6_addr[4]; /**< IPv6 destination address to match */
442 } ip_dst; /**< IPv4/IPv6 destination address to match (union of above). */
443 enum rte_l4type l4type; /**< l4type to match: NONE/UDP/TCP/SCTP. */
444 enum rte_iptype iptype; /**< IP packet type to match: IPv4 or IPv6. */
448 * A structure used to configure FDIR masks that are used by the device
449 * to match the various fields of RX packet headers.
451 struct rte_fdir_masks {
452 /** When set to 1, packet l4type is not relevant in filters, and
453 source and destination port masks must be set to zero. */
454 uint8_t only_ip_flow;
455 uint8_t vlan_id; /**< If set to 1, vlan_id is relevant in filters. */
456 uint8_t vlan_prio; /**< If set to 1, vlan_prio is relevant in filters. */
457 uint8_t flexbytes; /**< If set to 1, flexbytes is relevant in filters. */
458 /** Mask of Destination IPv4 Address. All bits set to 1 define the
459 relevant bits to use in the destination address of an IPv4 packet
460 when matching it against FDIR filters. */
461 uint32_t dst_ipv4_mask;
462 /** Mask of Source IPv4 Address. All bits set to 1 define
463 the relevant bits to use in the source address of an IPv4 packet
464 when matching it against FDIR filters. */
465 uint32_t src_ipv4_mask;
466 /** Mask of Source IPv6 Address. All bits set to 1 define the
467 relevant BYTES to use in the source address of an IPv6 packet
468 when matching it against FDIR filters. */
469 uint16_t src_ipv6_mask;
470 /** Mask of Source Port. All bits set to 1 define the relevant
471 bits to use in the source port of an IP packets when matching it
472 against FDIR filters. */
473 uint16_t src_port_mask;
474 /** Mask of Destination Port. All bits set to 1 define the relevant
475 bits to use in the destination port of an IP packet when matching it
476 against FDIR filters. */
477 uint16_t dst_port_mask;
481 * A structure used to report the status of the flow director filters in use.
483 struct rte_eth_fdir {
484 /** Number of filters with collision indication. */
486 /** Number of free (non programmed) filters. */
488 /** The Lookup hash value of the added filter that updated the value
489 of the MAXLEN field */
491 /** Longest linked list of filters in the table. */
493 /** Number of added filters. */
495 /** Number of removed filters. */
497 /** Number of failed added filters (no more space in device). */
499 /** Number of failed removed filters. */
504 * A structure used to enable/disable specific device interrupts.
506 struct rte_intr_conf {
507 /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
512 * A structure used to configure an Ethernet port.
513 * Depending upon the RX multi-queue mode, extra advanced
514 * configuration settings may be needed.
516 struct rte_eth_conf {
518 /**< ETH_LINK_SPEED_10[0|00|000], or 0 for autonegotation */
519 uint16_t link_duplex;
520 /**< ETH_LINK_[HALF_DUPLEX|FULL_DUPLEX], or 0 for autonegotation */
521 struct rte_eth_rxmode rxmode; /**< Port RX configuration. */
522 struct rte_eth_txmode txmode; /**< Port TX configuration. */
524 struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
525 struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
526 /**< Port vmdq+dcb configuration. */
527 } rx_adv_conf; /**< Port RX filtering configuration (union). */
528 struct rte_fdir_conf fdir_conf; /**< FDIR configuration. */
529 struct rte_intr_conf intr_conf; /**< Interrupt mode configuration. */
533 * A structure used to retrieve the contextual information of
534 * an Ethernet device, such as the controlling driver of the device,
535 * its PCI context, etc...
537 struct rte_eth_dev_info {
538 struct rte_pci_device *pci_dev; /**< Device PCI information. */
539 const char *driver_name; /**< Device Driver name. */
540 uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */
541 uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */
542 uint16_t max_rx_queues; /**< Maximum number of RX queues. */
543 uint16_t max_tx_queues; /**< Maximum number of TX queues. */
544 uint32_t max_mac_addrs; /**< Maximum number of MAC addresses. */
551 struct rte_eth_dev_callback;
552 /** @internal Structure to keep track of registered callbacks */
553 TAILQ_HEAD(rte_eth_dev_cb_list, rte_eth_dev_callback);
556 * Definitions of all functions exported by an Ethernet driver through the
557 * the generic structure of type *eth_dev_ops* supplied in the *rte_eth_dev*
558 * structure associated with an Ethernet device.
561 typedef int (*eth_dev_configure_t)(struct rte_eth_dev *dev, uint16_t nb_rx_q,
563 /**< Ethernet device configuration. */
565 typedef int (*eth_dev_start_t)(struct rte_eth_dev *dev);
566 /**< Function used to start a configured Ethernet device. */
568 typedef void (*eth_dev_stop_t)(struct rte_eth_dev *dev);
569 /**< Function used to stop a configured Ethernet device. */
571 typedef void (*eth_dev_close_t)(struct rte_eth_dev *dev);
572 /**< @internal Function used to close a configured Ethernet device. */
574 typedef void (*eth_promiscuous_enable_t)(struct rte_eth_dev *dev);
575 /**< Function used to enable the RX promiscuous mode of an Ethernet device. */
577 typedef void (*eth_promiscuous_disable_t)(struct rte_eth_dev *dev);
578 /**< Function used to disable the RX promiscuous mode of an Ethernet device. */
580 typedef void (*eth_allmulticast_enable_t)(struct rte_eth_dev *dev);
581 /**< Enable the receipt of all multicast packets by an Ethernet device. */
583 typedef void (*eth_allmulticast_disable_t)(struct rte_eth_dev *dev);
584 /**< Disable the receipt of all multicast packets by an Ethernet device. */
586 typedef int (*eth_link_update_t)(struct rte_eth_dev *dev,
587 int wait_to_complete);
588 /**< Get link speed, duplex mode and state (up/down) of an Ethernet device. */
590 typedef void (*eth_stats_get_t)(struct rte_eth_dev *dev,
591 struct rte_eth_stats *igb_stats);
592 /**< Get global I/O statistics of an Ethernet device. */
594 typedef void (*eth_stats_reset_t)(struct rte_eth_dev *dev);
595 /**< Reset global I/O statistics of an Ethernet device to 0. */
597 typedef void (*eth_dev_infos_get_t)(struct rte_eth_dev *dev,
598 struct rte_eth_dev_info *dev_info);
599 /**< Get specific informations of an Ethernet device. */
601 typedef int (*eth_rx_queue_setup_t)(struct rte_eth_dev *dev,
602 uint16_t rx_queue_id,
604 unsigned int socket_id,
605 const struct rte_eth_rxconf *rx_conf,
606 struct rte_mempool *mb_pool);
607 /**< Set up a receive queue of an Ethernet device. */
609 typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
610 uint16_t tx_queue_id,
612 unsigned int socket_id,
613 const struct rte_eth_txconf *tx_conf);
614 /**< Setup a transmit queue of an Ethernet device. */
616 typedef void (*vlan_filter_set_t)(struct rte_eth_dev *dev,
619 /**< Enable/Disable filtering of a VLAN Tag Identifier by an Ethernet device. */
621 typedef uint16_t (*eth_rx_burst_t)(struct igb_rx_queue *rxq,
622 struct rte_mbuf **rx_pkts,
624 /**< Retrieve input packets from a receive queue of an Ethernet device. */
626 typedef uint16_t (*eth_tx_burst_t)(struct igb_tx_queue *txq,
627 struct rte_mbuf **tx_pkts,
629 /**< Send output packets on a transmit queue of an Ethernet device. */
631 typedef int (*fdir_add_signature_filter_t)(struct rte_eth_dev *dev,
632 struct rte_fdir_filter *fdir_ftr,
634 /**< Setup a new signature filter rule on an Ethernet device */
636 typedef int (*fdir_update_signature_filter_t)(struct rte_eth_dev *dev,
637 struct rte_fdir_filter *fdir_ftr,
639 /**< Update a signature filter rule on an Ethernet device */
641 typedef int (*fdir_remove_signature_filter_t)(struct rte_eth_dev *dev,
642 struct rte_fdir_filter *fdir_ftr);
643 /**< Remove a signature filter rule on an Ethernet device */
645 typedef void (*fdir_infos_get_t)(struct rte_eth_dev *dev,
646 struct rte_eth_fdir *fdir);
647 /**< Get information about fdir status */
649 typedef int (*fdir_add_perfect_filter_t)(struct rte_eth_dev *dev,
650 struct rte_fdir_filter *fdir_ftr,
651 uint16_t soft_id, uint8_t rx_queue,
653 /**< Setup a new perfect filter rule on an Ethernet device */
655 typedef int (*fdir_update_perfect_filter_t)(struct rte_eth_dev *dev,
656 struct rte_fdir_filter *fdir_ftr,
657 uint16_t soft_id, uint8_t rx_queue,
659 /**< Update a perfect filter rule on an Ethernet device */
661 typedef int (*fdir_remove_perfect_filter_t)(struct rte_eth_dev *dev,
662 struct rte_fdir_filter *fdir_ftr,
664 /**< Remove a perfect filter rule on an Ethernet device */
666 typedef int (*fdir_set_masks_t)(struct rte_eth_dev *dev,
667 struct rte_fdir_masks *fdir_masks);
668 /**< Setup flow director masks on an Ethernet device */
670 typedef int (*flow_ctrl_set_t)(struct rte_eth_dev *dev,
671 struct rte_eth_fc_conf *fc_conf);
672 /**< Setup flow control parameter on an Ethernet device */
674 typedef int (*eth_dev_led_on_t)(struct rte_eth_dev *dev);
675 /**< Turn on SW controllable LED on an Ethernet device */
677 typedef int (*eth_dev_led_off_t)(struct rte_eth_dev *dev);
678 /**< Turn off SW controllable LED on an Ethernet device */
680 typedef void (*eth_mac_addr_remove_t)(struct rte_eth_dev *dev, uint32_t index);
681 /**< Remove MAC address from receive address register */
683 typedef void (*eth_mac_addr_add_t)(struct rte_eth_dev *dev,
684 struct ether_addr *mac_addr,
687 /**< Set a MAC address into Receive Address Address Register */
690 * A structure containing the functions exported by an Ethernet driver.
693 eth_dev_configure_t dev_configure; /**< Configure device. */
694 eth_dev_start_t dev_start; /**< Start device. */
695 eth_dev_stop_t dev_stop; /**< Stop device. */
696 eth_dev_close_t dev_close; /**< Close device. */
697 eth_promiscuous_enable_t promiscuous_enable; /**< Promiscuous ON. */
698 eth_promiscuous_disable_t promiscuous_disable;/**< Promiscuous OFF. */
699 eth_allmulticast_enable_t allmulticast_enable;/**< RX multicast ON. */
700 eth_allmulticast_disable_t allmulticast_disable;/**< RX multicast OF. */
701 eth_link_update_t link_update; /**< Get device link state. */
702 eth_stats_get_t stats_get; /**< Get device statistics. */
703 eth_stats_reset_t stats_reset; /**< Reset device statistics. */
704 eth_dev_infos_get_t dev_infos_get; /**< Get device info. */
705 vlan_filter_set_t vlan_filter_set; /**< Filter VLAN on/off. */
706 eth_rx_queue_setup_t rx_queue_setup;/**< Set up device RX queue.*/
707 eth_tx_queue_setup_t tx_queue_setup;/**< Set up device TX queue.*/
708 eth_dev_led_on_t dev_led_on; /**< Turn on LED. */
709 eth_dev_led_off_t dev_led_off; /**< Turn off LED. */
710 flow_ctrl_set_t flow_ctrl_set; /**< Setup flow control. */
711 eth_mac_addr_remove_t mac_addr_remove; /**< Remove MAC address */
712 eth_mac_addr_add_t mac_addr_add; /**< Add a MAC address */
714 /** Add a signature filter. */
715 fdir_add_signature_filter_t fdir_add_signature_filter;
716 /** Update a signature filter. */
717 fdir_update_signature_filter_t fdir_update_signature_filter;
718 /** Remove a signature filter. */
719 fdir_remove_signature_filter_t fdir_remove_signature_filter;
720 /** Get information about FDIR status. */
721 fdir_infos_get_t fdir_infos_get;
722 /** Add a perfect filter. */
723 fdir_add_perfect_filter_t fdir_add_perfect_filter;
724 /** Update a perfect filter. */
725 fdir_update_perfect_filter_t fdir_update_perfect_filter;
726 /** Remove a perfect filter. */
727 fdir_remove_perfect_filter_t fdir_remove_perfect_filter;
728 /** Setup masks for FDIR filtering. */
729 fdir_set_masks_t fdir_set_masks;
733 * The generic data structure associated with each ethernet device.
735 * Pointers to burst-oriented packet receive and transmit functions are
736 * located at the beginning of the structure, along with the pointer to
737 * where all the data elements for the particular device are stored in shared
738 * memory. This split allows the function pointer and driver data to be per-
739 * process, while the actual configuration data for the device is shared.
742 eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
743 eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
744 struct rte_eth_dev_data *data; /**< Pointer to device data */
745 const struct eth_driver *driver;/**< Driver for this device */
746 struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
747 struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */
748 struct rte_eth_dev_cb_list callbacks; /**< User application callbacks */
752 * The data part, with no function pointers, associated with each ethernet device.
754 * This structure is safe to place in shared memory to be common among different
755 * processes in a multi-process configuration.
757 struct rte_eth_dev_data {
758 struct igb_rx_queue **rx_queues; /**< Array of pointers to RX queues. */
759 struct igb_tx_queue **tx_queues; /**< Array of pointers to TX queues. */
760 uint16_t nb_rx_queues; /**< Number of RX queues. */
761 uint16_t nb_tx_queues; /**< Number of TX queues. */
763 void *dev_private; /**< PMD-specific private data */
765 struct rte_eth_link dev_link;
766 /**< Link-level information & status */
768 struct rte_eth_conf dev_conf; /**< Configuration applied to device. */
769 uint16_t max_frame_size; /**< Default is ETHER_MAX_LEN (1518). */
771 uint64_t rx_mbuf_alloc_failed; /**< RX ring mbuf allocation failures. */
772 struct ether_addr* mac_addrs;/**< Device Ethernet Link address. */
773 uint8_t port_id; /**< Device [external] port identifier. */
774 uint8_t promiscuous : 1, /**< RX promiscuous mode ON(1) / OFF(0). */
775 scattered_rx : 1, /**< RX of scattered packets is ON(1) / OFF(0) */
776 all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
777 dev_started : 1; /**< Device state: STARTED(1) / STOPPED(0). */
781 * The pool of *rte_eth_dev* structures. The size of the pool
782 * is configured at compile-time in the <rte_ethdev.c> file.
784 extern struct rte_eth_dev rte_eth_devices[];
787 * Get the total number of Ethernet devices that have been successfully
788 * initialized by the [matching] Ethernet driver during the PCI probing phase.
789 * All devices whose port identifier is in the range
790 * [0, rte_eth_dev_count() - 1] can be operated on by network applications.
793 * - The total number of usable Ethernet devices.
795 extern uint8_t rte_eth_dev_count(void);
799 * Initialization function of an Ethernet driver invoked for each matching
800 * Ethernet PCI device detected during the PCI probing phase.
803 * The pointer to the [matching] Ethernet driver structure supplied by
804 * the PMD when it registered itself.
806 * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
807 * associated with the matching device and which have been [automatically]
808 * allocated in the *rte_eth_devices* array.
809 * The *eth_dev* structure is supplied to the driver initialization function
810 * with the following fields already initialized:
812 * - *pci_dev*: Holds the pointers to the *rte_pci_device* structure which
813 * contains the generic PCI information of the matching device.
815 * - *dev_private*: Holds a pointer to the device private data structure.
817 * - *max_frame_size*: Contains the default Ethernet maximum frame length
820 * - *port_id*: Contains the port index of the device (actually the index
821 * of the *eth_dev* structure in the *rte_eth_devices* array).
824 * - 0: Success, the device is properly initialized by the driver.
825 * In particular, the driver MUST have set up the *dev_ops* pointer
826 * of the *eth_dev* structure.
827 * - <0: Error code of the device initialization failure.
829 typedef int (*eth_dev_init_t)(struct eth_driver *eth_drv,
830 struct rte_eth_dev *eth_dev);
833 * The structure associated with a PMD Ethernet driver.
835 * Each Ethernet driver acts as a PCI driver and is represented by a generic
836 * *eth_driver* structure that holds:
838 * - An *rte_pci_driver* structure (which must be the first field).
840 * - The *eth_dev_init* function invoked for each matching PCI device.
842 * - The size of the private data to allocate for each matching device.
845 struct rte_pci_driver pci_drv; /**< The PMD is also a PCI driver. */
846 eth_dev_init_t eth_dev_init; /**< Device init function. */
847 unsigned int dev_private_size; /**< Size of device private data. */
851 * A function invoked by the initialization function of an Ethernet driver
852 * to simultaneously register itself as a PCI driver and as an Ethernet
853 * Poll Mode Driver (PMD).
856 * The pointer to the *eth_driver* structure associated with
857 * the Ethernet driver.
859 extern void rte_eth_driver_register(struct eth_driver *eth_drv);
862 * The initialization function of the driver for
863 * Intel(r) IGB Gigabit Ethernet Controller devices.
864 * This function is invoked once at EAL start time.
868 extern int rte_igb_pmd_init(void);
871 * The initialization function of the driver for 10Gbps Intel IXGBE
873 * Invoked once at EAL start time.
877 extern int rte_ixgbe_pmd_init(void);
880 * The initialization function of the driver for 10Gbps Intel IXGBE_VF
882 * Invoked once at EAL start time.
886 extern int rte_ixgbevf_pmd_init(void);
889 * Configure an Ethernet device.
890 * This function must be invoked first before any other function in the
891 * Ethernet API. This function can also be re-invoked when a device is in the
895 * The port identifier of the Ethernet device to configure.
897 * The number of receive queues to set up for the Ethernet device.
899 * The number of transmit queues to set up for the Ethernet device.
901 * The pointer to the configuration data to be used for the Ethernet device.
902 * The *rte_eth_conf* structure includes:
903 * - the hardware offload features to activate, with dedicated fields for
904 * each statically configurable offload hardware feature provided by
905 * Ethernet devices, such as IP checksum or VLAN tag stripping for
907 * - the Receive Side Scaling (RSS) configuration when using multiple RX
910 * Embedding all configuration information in a single data structure
911 * is the more flexible method that allows the addition of new features
912 * without changing the syntax of the API.
914 * - 0: Success, device configured.
915 * - <0: Error code returned by the driver configuration function.
917 extern int rte_eth_dev_configure(uint8_t port_id,
918 uint16_t nb_rx_queue,
919 uint16_t nb_tx_queue,
920 const struct rte_eth_conf *eth_conf);
923 * Allocate and set up a receive queue for an Ethernet device.
925 * The function allocates a contiguous block of memory for *nb_rx_desc*
926 * receive descriptors from a memory zone associated with *socket_id*
927 * and initializes each receive descriptor with a network buffer allocated
928 * from the memory pool *mb_pool*.
931 * The port identifier of the Ethernet device.
933 * The index of the receive queue to set up.
934 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
935 * to rte_eth_dev_configure().
937 * The number of receive descriptors to allocate for the receive ring.
939 * The *socket_id* argument is the socket identifier in case of NUMA.
940 * The value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
941 * the DMA memory allocated for the receive descriptors of the ring.
943 * The pointer to the configuration data to be used for the receive queue.
944 * The *rx_conf* structure contains an *rx_thresh* structure with the values
945 * of the Prefetch, Host, and Write-Back threshold registers of the receive
948 * The pointer to the memory pool from which to allocate *rte_mbuf* network
949 * memory buffers to populate each descriptor of the receive ring.
951 * - 0: Success, receive queue correctly set up.
952 * - -EINVAL: The size of network buffers which can be allocated from the
953 * memory pool does not fit the various buffer sizes allowed by the
955 * - -ENOMEM: Unable to allocate the receive ring descriptors or to
956 * allocate network memory buffers from the memory pool when
957 * initializing receive descriptors.
959 extern int rte_eth_rx_queue_setup(uint8_t port_id, uint16_t rx_queue_id,
960 uint16_t nb_rx_desc, unsigned int socket_id,
961 const struct rte_eth_rxconf *rx_conf,
962 struct rte_mempool *mb_pool);
965 * Allocate and set up a transmit queue for an Ethernet device.
968 * The port identifier of the Ethernet device.
970 * The index of the transmit queue to set up.
971 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
972 * to rte_eth_dev_configure().
974 * The number of transmit descriptors to allocate for the transmit ring.
976 * The *socket_id* argument is the socket identifier in case of NUMA.
977 * Its value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
978 * the DMA memory allocated for the transmit descriptors of the ring.
980 * The pointer to the configuration data to be used for the transmit queue.
981 * The *tx_conf* structure contains the following data:
982 * - The *tx_thresh* structure with the values of the Prefetch, Host, and
983 * Write-Back threshold registers of the transmit ring.
984 * When setting Write-Back threshold to the value greater then zero,
985 * *tx_rs_thresh* value should be explicitly set to one.
986 * - The *tx_free_thresh* value indicates the [minimum] number of network
987 * buffers that must be pending in the transmit ring to trigger their
988 * [implicit] freeing by the driver transmit function.
989 * - The *tx_rs_thresh* value indicates the [minimum] number of transmit
990 * descriptors that must be pending in the transmit ring before setting the
991 * RS bit on a descriptor by the driver transmit function.
992 * The *tx_rs_thresh* value should be less or equal then
993 * *tx_free_thresh* value, and both of them should be less then
996 * Note that setting *tx_free_thresh* or *tx_rs_thresh* value to 0 forces
997 * the transmit function to use default values.
999 * - 0: Success, the transmit queue is correctly set up.
1000 * - -ENOMEM: Unable to allocate the transmit ring descriptors.
1002 extern int rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
1003 uint16_t nb_tx_desc, unsigned int socket_id,
1004 const struct rte_eth_txconf *tx_conf);
1007 * Start an Ethernet device.
1009 * The device start step is the last one and consists of setting the configured
1010 * offload features and in starting the transmit and the receive units of the
1012 * On success, all basic functions exported by the Ethernet API (link status,
1013 * receive/transmit, and so on) can be invoked.
1016 * The port identifier of the Ethernet device.
1018 * - 0: Success, Ethernet device started.
1019 * - <0: Error code of the driver device start function.
1021 extern int rte_eth_dev_start(uint8_t port_id);
1024 * Stop an Ethernet device. The device can be restarted with a call to
1025 * rte_eth_dev_start()
1028 * The port identifier of the Ethernet device.
1030 extern void rte_eth_dev_stop(uint8_t port_id);
1033 * Close an Ethernet device. The device cannot be restarted!
1036 * The port identifier of the Ethernet device.
1038 extern void rte_eth_dev_close(uint8_t port_id);
1041 * Enable receipt in promiscuous mode for an Ethernet device.
1044 * The port identifier of the Ethernet device.
1046 extern void rte_eth_promiscuous_enable(uint8_t port_id);
1049 * Disable receipt in promiscuous mode for an Ethernet device.
1052 * The port identifier of the Ethernet device.
1054 extern void rte_eth_promiscuous_disable(uint8_t port_id);
1057 * Return the value of promiscuous mode for an Ethernet device.
1060 * The port identifier of the Ethernet device.
1062 * - (1) if promiscuous is enabled
1063 * - (0) if promiscuous is disabled.
1066 extern int rte_eth_promiscuous_get(uint8_t port_id);
1069 * Enable the receipt of any multicast frame by an Ethernet device.
1072 * The port identifier of the Ethernet device.
1074 extern void rte_eth_allmulticast_enable(uint8_t port_id);
1077 * Disable the receipt of all multicast frames by an Ethernet device.
1080 * The port identifier of the Ethernet device.
1082 extern void rte_eth_allmulticast_disable(uint8_t port_id);
1085 * Return the value of allmulticast mode for an Ethernet device.
1088 * The port identifier of the Ethernet device.
1090 * - (1) if allmulticast is enabled
1091 * - (0) if allmulticast is disabled.
1094 extern int rte_eth_allmulticast_get(uint8_t port_id);
1097 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1098 * or FULL-DUPLEX) of the physical link of an Ethernet device. It might need
1099 * to wait up to 9 seconds in it.
1102 * The port identifier of the Ethernet device.
1104 * A pointer to an *rte_eth_link* structure to be filled with
1105 * the status, the speed and the mode of the Ethernet device link.
1107 extern void rte_eth_link_get(uint8_t port_id, struct rte_eth_link *link);
1110 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1111 * or FULL-DUPLEX) of the physical link of an Ethernet device. It is a no-wait
1112 * version of rte_eth_link_get().
1115 * The port identifier of the Ethernet device.
1117 * A pointer to an *rte_eth_link* structure to be filled with
1118 * the status, the speed and the mode of the Ethernet device link.
1120 extern void rte_eth_link_get_nowait(uint8_t port_id,
1121 struct rte_eth_link *link);
1124 * Retrieve the general I/O statistics of an Ethernet device.
1127 * The port identifier of the Ethernet device.
1129 * A pointer to a structure of type *rte_eth_stats* to be filled with
1130 * the values of device counters for the following set of statistics:
1131 * - *ipackets* with the total of successfully received packets.
1132 * - *opackets* with the total of successfully transmitted packets.
1133 * - *ibytes* with the total of successfully received bytes.
1134 * - *obytes* with the total of successfully transmitted bytes.
1135 * - *ierrors* with the total of erroneous received packets.
1136 * - *oerrors* with the total of failed transmitted packets.
1138 extern void rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats);
1141 * Reset the general I/O statistics of an Ethernet device.
1144 * The port identifier of the Ethernet device.
1146 extern void rte_eth_stats_reset(uint8_t port_id);
1149 * Retrieve the Ethernet address of an Ethernet device.
1152 * The port identifier of the Ethernet device.
1154 * A pointer to a structure of type *ether_addr* to be filled with
1155 * the Ethernet address of the Ethernet device.
1157 extern void rte_eth_macaddr_get(uint8_t port_id, struct ether_addr *mac_addr);
1160 * Retrieve the contextual information of an Ethernet device.
1163 * The port identifier of the Ethernet device.
1165 * A pointer to a structure of type *rte_eth_dev_info* to be filled with
1166 * the contextual information of the Ethernet device.
1168 extern void rte_eth_dev_info_get(uint8_t port_id,
1169 struct rte_eth_dev_info *dev_info);
1172 * Enable/Disable hardware filtering by an Ethernet device of received
1173 * VLAN packets tagged with a given VLAN Tag Identifier.
1176 * The port identifier of the Ethernet device.
1178 * The VLAN Tag Identifier whose filtering must be enabled or disabled.
1180 * If > 0, enable VLAN filtering of VLAN packets tagged with *vlan_id*.
1181 * Otherwise, disable VLAN filtering of VLAN packets tagged with *vlan_id*.
1183 * - (0) if successful.
1184 * - (-ENOSUP) if hardware-assisted VLAN filtering not configured.
1185 * - (-ENODEV) if *port_id* invalid.
1186 * - (-ENOSYS) if VLAN filtering on *port_id* disabled.
1187 * - (-EINVAL) if *vlan_id* > 4095.
1189 extern int rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on);
1193 * Retrieve a burst of input packets from a receive queue of an Ethernet
1194 * device. The retrieved packets are stored in *rte_mbuf* structures whose
1195 * pointers are supplied in the *rx_pkts* array.
1197 * The rte_eth_rx_burst() function loops, parsing the RX ring of the
1198 * receive queue, up to *nb_pkts* packets, and for each completed RX
1199 * descriptor in the ring, it performs the following operations:
1201 * - Initialize the *rte_mbuf* data structure associated with the
1202 * RX descriptor according to the information provided by the NIC into
1203 * that RX descriptor.
1205 * - Store the *rte_mbuf* data structure into the next entry of the
1208 * - Replenish the RX descriptor with a new *rte_mbuf* buffer
1209 * allocated from the memory pool associated with the receive queue at
1210 * initialization time.
1212 * When retrieving an input packet that was scattered by the controller
1213 * into multiple receive descriptors, the rte_eth_rx_burst() function
1214 * appends the associated *rte_mbuf* buffers to the first buffer of the
1217 * The rte_eth_rx_burst() function returns the number of packets
1218 * actually retrieved, which is the number of *rte_mbuf* data structures
1219 * effectively supplied into the *rx_pkts* array.
1220 * A return value equal to *nb_pkts* indicates that the RX queue contained
1221 * at least *rx_pkts* packets, and this is likely to signify that other
1222 * received packets remain in the input queue. Applications implementing
1223 * a "retrieve as much received packets as possible" policy can check this
1224 * specific case and keep invoking the rte_eth_rx_burst() function until
1225 * a value less than *nb_pkts* is returned.
1227 * This receive method has the following advantages:
1229 * - It allows a run-to-completion network stack engine to retrieve and
1230 * to immediately process received packets in a fast burst-oriented
1231 * approach, avoiding the overhead of unnecessary intermediate packet
1232 * queue/dequeue operations.
1234 * - Conversely, it also allows an asynchronous-oriented processing
1235 * method to retrieve bursts of received packets and to immediately
1236 * queue them for further parallel processing by another logical core,
1237 * for instance. However, instead of having received packets being
1238 * individually queued by the driver, this approach allows the invoker
1239 * of the rte_eth_rx_burst() function to queue a burst of retrieved
1240 * packets at a time and therefore dramatically reduce the cost of
1241 * enqueue/dequeue operations per packet.
1243 * - It allows the rte_eth_rx_burst() function of the driver to take
1244 * advantage of burst-oriented hardware features (CPU cache,
1245 * prefetch instructions, and so on) to minimize the number of CPU
1246 * cycles per packet.
1248 * To summarize, the proposed receive API enables many
1249 * burst-oriented optimizations in both synchronous and asynchronous
1250 * packet processing environments with no overhead in both cases.
1252 * The rte_eth_rx_burst() function does not provide any error
1253 * notification to avoid the corresponding overhead. As a hint, the
1254 * upper-level application might check the status of the device link once
1255 * being systematically returned a 0 value for a given number of tries.
1258 * The port identifier of the Ethernet device.
1260 * The index of the receive queue from which to retrieve input packets.
1261 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1262 * to rte_eth_dev_configure().
1264 * The address of an array of pointers to *rte_mbuf* structures that
1265 * must be large enough to store *nb_pkts* pointers in it.
1267 * The maximum number of packets to retrieve.
1269 * The number of packets actually retrieved, which is the number
1270 * of pointers to *rte_mbuf* structures effectively supplied to the
1273 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1274 extern uint16_t rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1275 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
1277 static inline uint16_t
1278 rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1279 struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
1281 struct rte_eth_dev *dev;
1283 dev = &rte_eth_devices[port_id];
1284 return (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id], rx_pkts, nb_pkts);
1289 * Send a burst of output packets on a transmit queue of an Ethernet device.
1291 * The rte_eth_tx_burst() function is invoked to transmit output packets
1292 * on the output queue *queue_id* of the Ethernet device designated by its
1294 * The *nb_pkts* parameter is the number of packets to send which are
1295 * supplied in the *tx_pkts* array of *rte_mbuf* structures.
1296 * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
1297 * up to the number of transmit descriptors available in the TX ring of the
1299 * For each packet to send, the rte_eth_tx_burst() function performs
1300 * the following operations:
1302 * - Pick up the next available descriptor in the transmit ring.
1304 * - Free the network buffer previously sent with that descriptor, if any.
1306 * - Initialize the transmit descriptor with the information provided
1307 * in the *rte_mbuf data structure.
1309 * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
1310 * the rte_eth_tx_burst() function uses several transmit descriptors
1313 * The rte_eth_tx_burst() function returns the number of packets it
1314 * actually sent. A return value equal to *nb_pkts* means that all packets
1315 * have been sent, and this is likely to signify that other output packets
1316 * could be immediately transmitted again. Applications that implement a
1317 * "send as many packets to transmit as possible" policy can check this
1318 * specific case and keep invoking the rte_eth_tx_burst() function until
1319 * a value less than *nb_pkts* is returned.
1321 * It is the responsibility of the rte_eth_tx_burst() function to
1322 * transparently free the memory buffers of packets previously sent.
1323 * This feature is driven by the *tx_free_thresh* value supplied to the
1324 * rte_eth_dev_configure() function at device configuration time.
1325 * When the number of previously sent packets reached the "minimum transmit
1326 * packets to free" threshold, the rte_eth_tx_burst() function must
1327 * [attempt to] free the *rte_mbuf* buffers of those packets whose
1328 * transmission was effectively completed.
1331 * The port identifier of the Ethernet device.
1333 * The index of the transmit queue through which output packets must be
1335 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1336 * to rte_eth_dev_configure().
1338 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
1339 * which contain the output packets.
1341 * The maximum number of packets to transmit.
1343 * The number of output packets actually stored in transmit descriptors of
1344 * the transmit ring. The return value can be less than the value of the
1345 * *tx_pkts* parameter when the transmit ring is full or has been filled up.
1347 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1348 extern uint16_t rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1349 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
1351 static inline uint16_t
1352 rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1353 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1355 struct rte_eth_dev *dev;
1357 dev = &rte_eth_devices[port_id];
1358 return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
1363 * Setup a new signature filter rule on an Ethernet device
1366 * The port identifier of the Ethernet device.
1367 * @param fdir_filter
1368 * The pointer to the fdir filter structure describing the signature filter
1370 * The *rte_fdir_filter* structure includes the values of the different fields
1371 * to match: source and destination IP addresses, vlan id, flexbytes, source
1372 * and destination ports, and so on.
1374 * The index of the RX queue where to store RX packets matching the added
1375 * signature filter defined in fdir_filter.
1377 * - (0) if successful.
1378 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1379 * - (-ENODEV) if *port_id* invalid.
1380 * - (-ENOSYS) if the FDIR mode is not configured in signature mode
1382 * - (-EINVAL) if the fdir_filter information is not correct.
1384 int rte_eth_dev_fdir_add_signature_filter(uint8_t port_id,
1385 struct rte_fdir_filter *fdir_filter,
1389 * Update a signature filter rule on an Ethernet device.
1390 * If the rule doesn't exits, it is created.
1393 * The port identifier of the Ethernet device.
1395 * The pointer to the structure describing the signature filter rule.
1396 * The *rte_fdir_filter* structure includes the values of the different fields
1397 * to match: source and destination IP addresses, vlan id, flexbytes, source
1398 * and destination ports, and so on.
1400 * The index of the RX queue where to store RX packets matching the added
1401 * signature filter defined in fdir_ftr.
1403 * - (0) if successful.
1404 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1405 * - (-ENODEV) if *port_id* invalid.
1406 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1408 * - (-EINVAL) if the fdir_filter information is not correct.
1410 int rte_eth_dev_fdir_update_signature_filter(uint8_t port_id,
1411 struct rte_fdir_filter *fdir_ftr,
1415 * Remove a signature filter rule on an Ethernet device.
1418 * The port identifier of the Ethernet device.
1420 * The pointer to the structure describing the signature filter rule.
1421 * The *rte_fdir_filter* structure includes the values of the different fields
1422 * to match: source and destination IP addresses, vlan id, flexbytes, source
1423 * and destination ports, and so on.
1425 * - (0) if successful.
1426 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1427 * - (-ENODEV) if *port_id* invalid.
1428 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1430 * - (-EINVAL) if the fdir_filter information is not correct.
1432 int rte_eth_dev_fdir_remove_signature_filter(uint8_t port_id,
1433 struct rte_fdir_filter *fdir_ftr);
1436 * Retrieve the flow director information of an Ethernet device.
1439 * The port identifier of the Ethernet device.
1441 * A pointer to a structure of type *rte_eth_dev_fdir* to be filled with
1442 * the flow director information of the Ethernet device.
1444 * - (0) if successful.
1445 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1446 * - (-ENODEV) if *port_id* invalid.
1447 * - (-ENOSYS) if the flow director mode is not configured on *port_id*.
1449 int rte_eth_dev_fdir_get_infos(uint8_t port_id, struct rte_eth_fdir *fdir);
1452 * Add a new perfect filter rule on an Ethernet device.
1455 * The port identifier of the Ethernet device.
1456 * @param fdir_filter
1457 * The pointer to the structure describing the perfect filter rule.
1458 * The *rte_fdir_filter* structure includes the values of the different fields
1459 * to match: source and destination IP addresses, vlan id, flexbytes, source
1460 * and destination ports, and so on.
1461 * IPv6 are not supported.
1463 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1464 * packets matching the perfect filter.
1466 * The index of the RX queue where to store RX packets matching the added
1467 * perfect filter defined in fdir_filter.
1469 * If drop is set to 1, matching RX packets are stored into the RX drop
1470 * queue defined in the rte_fdir_conf.
1472 * - (0) if successful.
1473 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1474 * - (-ENODEV) if *port_id* invalid.
1475 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1477 * - (-EINVAL) if the fdir_filter information is not correct.
1479 int rte_eth_dev_fdir_add_perfect_filter(uint8_t port_id,
1480 struct rte_fdir_filter *fdir_filter,
1481 uint16_t soft_id, uint8_t rx_queue,
1485 * Update a perfect filter rule on an Ethernet device.
1486 * If the rule doesn't exits, it is created.
1489 * The port identifier of the Ethernet device.
1490 * @param fdir_filter
1491 * The pointer to the structure describing the perfect filter rule.
1492 * The *rte_fdir_filter* structure includes the values of the different fields
1493 * to match: source and destination IP addresses, vlan id, flexbytes, source
1494 * and destination ports, and so on.
1495 * IPv6 are not supported.
1497 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1498 * packets matching the perfect filter.
1500 * The index of the RX queue where to store RX packets matching the added
1501 * perfect filter defined in fdir_filter.
1503 * If drop is set to 1, matching RX packets are stored into the RX drop
1504 * queue defined in the rte_fdir_conf.
1506 * - (0) if successful.
1507 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1508 * - (-ENODEV) if *port_id* invalid.
1509 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1511 * - (-EINVAL) if the fdir_filter information is not correct.
1513 int rte_eth_dev_fdir_update_perfect_filter(uint8_t port_id,
1514 struct rte_fdir_filter *fdir_filter,
1515 uint16_t soft_id, uint8_t rx_queue,
1519 * Remove a perfect filter rule on an Ethernet device.
1522 * The port identifier of the Ethernet device.
1523 * @param fdir_filter
1524 * The pointer to the structure describing the perfect filter rule.
1525 * The *rte_fdir_filter* structure includes the values of the different fields
1526 * to match: source and destination IP addresses, vlan id, flexbytes, source
1527 * and destination ports, and so on.
1528 * IPv6 are not supported.
1530 * The soft_id value provided when adding/updating the removed filter.
1532 * - (0) if successful.
1533 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1534 * - (-ENODEV) if *port_id* invalid.
1535 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1537 * - (-EINVAL) if the fdir_filter information is not correct.
1539 int rte_eth_dev_fdir_remove_perfect_filter(uint8_t port_id,
1540 struct rte_fdir_filter *fdir_filter,
1543 * Configure globally the masks for flow director mode for an Ethernet device.
1544 * For example, the device can match packets with only the first 24 bits of
1545 * the IPv4 source address.
1547 * The following fields can be masked: IPv4 addresses and L4 port numbers.
1548 * The following fields can be either enabled or disabled completely for the
1549 * matching functionality: VLAN ID tag; VLAN Priority + CFI bit; Flexible 2-byte
1551 * IPv6 masks are not supported.
1553 * All filters must comply with the masks previously configured.
1554 * For example, with a mask equal to 255.255.255.0 for the source IPv4 address,
1555 * all IPv4 filters must be created with a source IPv4 address that fits the
1558 * This function flushes all filters that have been previously added in
1562 * The port identifier of the Ethernet device.
1564 * The pointer to the fdir mask structure describing relevant headers fields
1565 * and relevant bits to use when matching packets addresses and ports.
1566 * IPv6 masks are not supported.
1568 * - (0) if successful.
1569 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1570 * - (-ENODEV) if *port_id* invalid.
1571 * - (-ENOSYS) if the flow director mode is not configured in perfect
1572 * mode on *port_id*.
1573 * - (-EINVAL) if the fdir_filter information is not correct
1575 int rte_eth_dev_fdir_set_masks(uint8_t port_id,
1576 struct rte_fdir_masks *fdir_mask);
1579 * The eth device event type for interrupt, and maybe others in the future.
1581 enum rte_eth_event_type {
1582 RTE_ETH_EVENT_UNKNOWN, /**< unknown event type */
1583 RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
1584 RTE_ETH_EVENT_MAX /**< max value of this enum */
1587 typedef void (*rte_eth_dev_cb_fn)(uint8_t port_id, \
1588 enum rte_eth_event_type event, void *cb_arg);
1589 /**< user application callback to be registered for interrupts */
1594 * Register a callback function for specific port id.
1601 * User supplied callback function to be called.
1603 * Pointer to the parameters for the registered callback.
1606 * - On success, zero.
1607 * - On failure, a negative value.
1609 int rte_eth_dev_callback_register(uint8_t port_id,
1610 enum rte_eth_event_type event,
1611 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1614 * Unregister a callback function for specific port id.
1621 * User supplied callback function to be called.
1623 * Pointer to the parameters for the registered callback. -1 means to
1624 * remove all for the same callback address and same event.
1627 * - On success, zero.
1628 * - On failure, a negative value.
1630 int rte_eth_dev_callback_unregister(uint8_t port_id,
1631 enum rte_eth_event_type event,
1632 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1635 * @internal Executes all the user application registered callbacks for
1636 * the specific device. It is for DPDK internal user only. User
1637 * application should not call it directly.
1640 * Pointer to struct rte_eth_dev.
1642 * Eth device interrupt event type.
1647 void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
1648 enum rte_eth_event_type event);
1651 * Turn on the LED on the Ethernet device.
1652 * This function turns on the LED on the Ethernet device.
1655 * The port identifier of the Ethernet device.
1657 * - (0) if successful.
1658 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1660 * - (-ENODEV) if *port_id* invalid.
1662 int rte_eth_led_on(uint8_t port_id);
1665 * Turn off the LED on the Ethernet device.
1666 * This function turns off the LED on the Ethernet device.
1669 * The port identifier of the Ethernet device.
1671 * - (0) if successful.
1672 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1674 * - (-ENODEV) if *port_id* invalid.
1676 int rte_eth_led_off(uint8_t port_id);
1679 * Configure the Ethernet link flow control for Ethernet device
1682 * The port identifier of the Ethernet device.
1684 * The pointer to the structure of the flow control parameters.
1686 * - (0) if successful.
1687 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1688 * - (-ENODEV) if *port_id* invalid.
1689 * - (-EINVAL) if bad parameter
1690 * - (-EIO) if flow control setup failure
1692 int rte_eth_dev_flow_ctrl_set(uint8_t port_id,
1693 struct rte_eth_fc_conf *fc_conf);
1696 * Add a MAC address to an internal array of addresses used to enable whitelist
1697 * filtering to accept packets only if the destination MAC address matches.
1700 * The port identifier of the Ethernet device.
1702 * The MAC address to add.
1704 * VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
1705 * not enabled, this should be set to 0.
1707 * - (0) if successfully added or *mac_addr" was already added.
1708 * - (-ENOTSUP) if hardware doesn't support this feature.
1709 * - (-ENODEV) if *port* is invalid.
1710 * - (-ENOSPC) if no more MAC addresses can be added.
1711 * - (-EINVAL) if MAC address is invalid.
1713 int rte_eth_dev_mac_addr_add(uint8_t port, struct ether_addr *mac_addr,
1717 * Remove a MAC address from the internal array of addresses.
1720 * The port identifier of the Ethernet device.
1722 * MAC address to remove.
1724 * - (0) if successful, or *mac_addr* didn't exist.
1725 * - (-ENOTSUP) if hardware doesn't support.
1726 * - (-ENODEV) if *port* invalid.
1727 * - (-EADDRINUSE) if attempting to remove the default MAC address
1729 int rte_eth_dev_mac_addr_remove(uint8_t port, struct ether_addr *mac_addr);
1732 /*-------------------------- Deprecated definitions --------------------------*/
1734 /* Needed to stop deprecation warnings becoming errors with GCC. */
1735 #ifndef __INTEL_COMPILER
1736 #pragma GCC diagnostic warning "-Wdeprecated-declarations"
1739 #ifdef RTE_LIBRTE_82576_PMD
1740 #pragma message "\nWARNING: CONFIG_RTE_LIBRTE_82576_PMD is deprecated. " \
1741 "CONFIG_RTE_LIBRTE_IGB_PMD must be set in the config file to use Intel(R) " \
1742 "DPDK supported Gigabit Ethernet Controllers."
1745 #ifdef RTE_LIBRTE_IGB_PMD
1747 * @deprecated The config file option CONFIG_RTE_LIBRTE_82576_PMD and resulting
1748 * preprocessor define RTE_LIBRTE_82576_PMD are deprecated.
1749 * CONFIG_RTE_LIBRTE_IGB_PMD must be set in the config file to use Intel(R) DPDK
1750 * supported Gigabit Ethernet Controllers, and RTE_LIBRTE_IGB_PMD should be used
1753 #define RTE_LIBRTE_82576_PMD 1
1757 * @deprecated rte_82576_pmd_init() is deprecated and will be removed from
1758 * future versions of Intel(R) DPDK. It has been replaced by rte_igb_pmd_init().
1763 static inline int __attribute__((deprecated))
1764 rte_82576_pmd_init(void) {
1765 RTE_LOG(WARNING, PMD, "rte_82576_pmd_init() is deprecated and will be "
1766 "removed from future version of Intel(R) DPDK. It has "
1767 "been replaced by rte_igb_pmd_init()");
1768 return rte_igb_pmd_init();
1772 #ifdef RTE_LIBRTE_82599_PMD
1773 #pragma message "\nWARNING: CONFIG_RTE_LIBRTE_82599_PMD is deprecated. " \
1774 "CONFIG_RTE_LIBRTE_IXGBE_PMD must be set in the config file to use Intel(R) " \
1775 "DPDK supported 10 Gigabit Ethernet Controllers."
1778 #ifdef RTE_LIBRTE_IXGBE_PMD
1780 * @deprecated The config file option CONFIG_RTE_LIBRTE_82599_PMD and resulting
1781 * preprocessor define RTE_LIBRTE_82599_PMD are deprecated.
1782 * CONFIG_RTE_LIBRTE_IXGBE_PMD must be set in the config file to use Intel(R)
1783 * DPDK supported Gigabit Ethernet Controllers, and RTE_LIBRTE_IXGBE_PMD should
1786 #define RTE_LIBRTE_82599_PMD 1
1790 * @deprecated rte_82599_pmd_init() is deprecated and will be removed from
1791 * future versions of Intel(R) DPDK. It has been replaced by
1792 * rte_ixgbe_pmd_init().
1797 static inline int __attribute__((deprecated))
1798 rte_82599_pmd_init(void) {
1799 RTE_LOG(WARNING, PMD, "rte_82599_pmd_init() is deprecated and will be "
1800 "removed from future version of Intel(R) DPDK. It has "
1801 "been replaced by rte_ixgbe_pmd_init()");
1802 return rte_ixgbe_pmd_init();
1809 #endif /* _RTE_ETHDEV_H_ */