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35 #ifndef _RTE_ETHDEV_H_
36 #define _RTE_ETHDEV_H_
41 * RTE Ethernet Device API
43 * The Ethernet Device API is composed of two parts:
45 * - The application-oriented Ethernet API that includes functions to setup
46 * an Ethernet device (configure it, setup its RX and TX queues and start it),
47 * to get its MAC address, the speed and the status of its physical link,
48 * to receive and to transmit packets, and so on.
50 * - The driver-oriented Ethernet API that exports a function allowing
51 * an Ethernet Poll Mode Driver (PMD) to simultaneously register itself as
52 * an Ethernet device driver and as a PCI driver for a set of matching PCI
53 * [Ethernet] devices classes.
55 * By default, all the functions of the Ethernet Device API exported by a PMD
56 * are lock-free functions which assume to not be invoked in parallel on
57 * different logical cores to work on the same target object. For instance,
58 * the receive function of a PMD cannot be invoked in parallel on two logical
59 * cores to poll the same RX queue [of the same port]. Of course, this function
60 * can be invoked in parallel by different logical cores on different RX queues.
61 * It is the responsibility of the upper level application to enforce this rule.
63 * If needed, parallel accesses by multiple logical cores to shared queues
64 * shall be explicitly protected by dedicated inline lock-aware functions
65 * built on top of their corresponding lock-free functions of the PMD API.
67 * In all functions of the Ethernet API, the Ethernet device is
68 * designated by an integer >= 0 named the device port identifier.
70 * At the Ethernet driver level, Ethernet devices are represented by a generic
71 * data structure of type *rte_eth_dev*.
73 * Ethernet devices are dynamically registered during the PCI probing phase
74 * performed at EAL initialization time.
75 * When an Ethernet device is being probed, an *rte_eth_dev* structure and
76 * a new port identifier are allocated for that device. Then, the eth_dev_init()
77 * function supplied by the Ethernet driver matching the probed PCI
78 * device is invoked to properly initialize the device.
80 * The role of the device init function consists of resetting the hardware,
81 * checking access to Non-volatile Memory (NVM), reading the MAC address
84 * If the device init operation is successful, the correspondence between
85 * the port identifier assigned to the new device and its associated
86 * *rte_eth_dev* structure is effectively registered.
87 * Otherwise, both the *rte_eth_dev* structure and the port identifier are
90 * The functions exported by the application Ethernet API to setup a device
91 * designated by its port identifier must be invoked in the following order:
92 * - rte_eth_dev_configure()
93 * - rte_eth_tx_queue_setup()
94 * - rte_eth_rx_queue_setup()
95 * - rte_eth_dev_start()
97 * Then, the network application can invoke, in any order, the functions
98 * exported by the Ethernet API to get the MAC address of a given device, to
99 * get the speed and the status of a device physical link, to receive/transmit
100 * [burst of] packets, and so on.
102 * If the application wants to change the configuration (i.e. call
103 * rte_eth_dev_configure(), rte_eth_tx_queue_setup(), or
104 * rte_eth_rx_queue_setup()), it must call rte_eth_dev_stop() first to stop the
105 * device and then do the reconfiguration before calling rte_eth_dev_start()
106 * again. The tramsit and receive functions should not be invoked when the
109 * Please note that some configuration is not stored between calls to
110 * rte_eth_dev_stop()/rte_eth_dev_start(). The following configuration will
113 * - flow control settings
114 * - receive mode configuration (promiscuous mode, hardware checksum mode,
115 * RSS/VMDQ settings etc.)
116 * - VLAN filtering configuration
117 * - MAC addresses supplied to MAC address array
118 * - flow director filtering mode (but not filtering rules)
120 * Any other configuration will not be stored and will need to be re-entered
121 * after a call to rte_eth_dev_start().
124 * Finally, a network application can close an Ethernet device by invoking the
125 * rte_eth_dev_close() function.
127 * Each function of the application Ethernet API invokes a specific function
128 * of the PMD that controls the target device designated by its port
130 * For this purpose, all device-specific functions of an Ethernet driver are
131 * supplied through a set of pointers contained in a generic structure of type
133 * The address of the *eth_dev_ops* structure is stored in the *rte_eth_dev*
134 * structure by the device init function of the Ethernet driver, which is
135 * invoked during the PCI probing phase, as explained earlier.
137 * In other words, each function of the Ethernet API simply retrieves the
138 * *rte_eth_dev* structure associated with the device port identifier and
139 * performs an indirect invocation of the corresponding driver function
140 * supplied in the *eth_dev_ops* structure of the *rte_eth_dev* structure.
142 * For performance reasons, the address of the burst-oriented RX and TX
143 * functions of the Ethernet driver are not contained in the *eth_dev_ops*
144 * structure. Instead, they are directly stored at the beginning of the
145 * *rte_eth_dev* structure to avoid an extra indirect memory access during
148 * RTE ethernet device drivers do not use interrupts for transmitting or
149 * receiving. Instead, Ethernet drivers export Poll-Mode receive and transmit
150 * functions to applications.
151 * Both receive and transmit functions are packet-burst oriented to minimize
152 * their cost per packet through the following optimizations:
154 * - Sharing among multiple packets the incompressible cost of the
155 * invocation of receive/transmit functions.
157 * - Enabling receive/transmit functions to take advantage of burst-oriented
158 * hardware features (L1 cache, prefetch instructions, NIC head/tail
159 * registers) to minimize the number of CPU cycles per packet, for instance,
160 * by avoiding useless read memory accesses to ring descriptors, or by
161 * systematically using arrays of pointers that exactly fit L1 cache line
162 * boundaries and sizes.
164 * The burst-oriented receive function does not provide any error notification,
165 * to avoid the corresponding overhead. As a hint, the upper-level application
166 * might check the status of the device link once being systematically returned
167 * a 0 value by the receive function of the driver for a given number of tries.
177 #include <rte_interrupts.h>
179 #include <rte_mbuf.h>
180 #include "rte_ether.h"
183 * A structure used to retrieve statistics for an Ethernet port.
185 struct rte_eth_stats {
186 uint64_t ipackets; /**< Total number of successfully received packets. */
187 uint64_t opackets; /**< Total number of successfully transmitted packets.*/
188 uint64_t ibytes; /**< Total number of successfully received bytes. */
189 uint64_t obytes; /**< Total number of successfully transmitted bytes. */
190 uint64_t ierrors; /**< Total number of erroneous received packets. */
191 uint64_t oerrors; /**< Total number of failed transmitted packets. */
192 uint64_t imcasts; /**< Total number of multicast received packets. */
193 uint64_t rx_nombuf; /**< Total number of RX mbuf allocation failures. */
194 uint64_t fdirmatch; /**< Total number of RX packets matching a filter. */
195 uint64_t fdirmiss; /**< Total number of RX packets not matching any filter. */
199 * A structure used to retrieve link-level information of an Ethernet port.
201 struct rte_eth_link {
202 uint16_t link_speed; /**< ETH_LINK_SPEED_[10, 100, 1000, 10000] */
203 uint16_t link_duplex; /**< ETH_LINK_[HALF_DUPLEX, FULL_DUPLEX] */
204 uint8_t link_status : 1; /**< 1 -> link up, 0 -> link down */
205 }__attribute__((aligned(8))); /**< aligned for atomic64 read/write */
207 #define ETH_LINK_SPEED_AUTONEG 0 /**< Auto-negotiate link speed. */
208 #define ETH_LINK_SPEED_10 10 /**< 10 megabits/second. */
209 #define ETH_LINK_SPEED_100 100 /**< 100 megabits/second. */
210 #define ETH_LINK_SPEED_1000 1000 /**< 1 gigabits/second. */
211 #define ETH_LINK_SPEED_10000 10000 /**< 10 gigabits/second. */
213 #define ETH_LINK_AUTONEG_DUPLEX 0 /**< Auto-negotiate duplex. */
214 #define ETH_LINK_HALF_DUPLEX 1 /**< Half-duplex connection. */
215 #define ETH_LINK_FULL_DUPLEX 2 /**< Full-duplex connection. */
218 * A structure used to configure the ring threshold registers of an RX/TX
219 * queue for an Ethernet port.
221 struct rte_eth_thresh {
222 uint8_t pthresh; /**< Ring prefetch threshold. */
223 uint8_t hthresh; /**< Ring host threshold. */
224 uint8_t wthresh; /**< Ring writeback threshold. */
228 * A set of values to identify what method is to be used to route
229 * packets to multiple queues.
231 enum rte_eth_rx_mq_mode {
232 ETH_RSS = 0, /**< Default to RSS mode */
233 ETH_VMDQ_DCB /**< Use VMDQ+DCB to route traffic to queues */
237 * A structure used to configure the RX features of an Ethernet port.
239 struct rte_eth_rxmode {
240 /** The multi-queue packet distribution mode to be used, e.g. RSS. */
241 enum rte_eth_rx_mq_mode mq_mode;
242 uint32_t max_rx_pkt_len; /**< Only used if jumbo_frame enabled. */
243 uint16_t split_hdr_size; /**< hdr buf size (header_split enabled).*/
244 uint8_t header_split : 1, /**< Header Split enable. */
245 hw_ip_checksum : 1, /**< IP/UDP/TCP checksum offload enable. */
246 hw_vlan_filter : 1, /**< VLAN filter enable. */
247 jumbo_frame : 1, /**< Jumbo Frame Receipt enable. */
248 hw_strip_crc : 1; /**< Enable CRC stripping by hardware. */
252 * A structure used to configure the Receive Side Scaling (RSS) feature
253 * of an Ethernet port.
254 * If not NULL, the *rss_key* pointer of the *rss_conf* structure points
255 * to an array of 40 bytes holding the RSS key to use for hashing specific
256 * header fields of received packets.
257 * Otherwise, a default random hash key is used by the device driver.
259 * The *rss_hf* field of the *rss_conf* structure indicates the different
260 * types of IPv4/IPv6 packets to which the RSS hashing must be applied.
261 * Supplying an *rss_hf* equal to zero disables the RSS feature.
263 struct rte_eth_rss_conf {
264 uint8_t *rss_key; /**< If not NULL, 40-byte hash key. */
265 uint16_t rss_hf; /**< Hash functions to apply - see below. */
268 #define ETH_RSS_IPV4 0x0001 /**< IPv4 packet. */
269 #define ETH_RSS_IPV4_TCP 0x0002 /**< IPv4/TCP packet. */
270 #define ETH_RSS_IPV6 0x0004 /**< IPv6 packet. */
271 #define ETH_RSS_IPV6_EX 0x0008 /**< IPv6 packet with extension headers.*/
272 #define ETH_RSS_IPV6_TCP 0x0010 /**< IPv6/TCP packet. */
273 #define ETH_RSS_IPV6_TCP_EX 0x0020 /**< IPv6/TCP with extension headers. */
274 /* Intel RSS extensions to UDP packets */
275 #define ETH_RSS_IPV4_UDP 0x0040 /**< IPv4/UDP packet. */
276 #define ETH_RSS_IPV6_UDP 0x0080 /**< IPv6/UDP packet. */
277 #define ETH_RSS_IPV6_UDP_EX 0x0100 /**< IPv6/UDP with extension headers. */
279 /* Definitions used for VMDQ and DCB functionality */
280 #define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters. */
281 #define ETH_DCB_NUM_USER_PRIORITIES 8 /**< Maximum nb. of DCB priorities. */
282 #define ETH_VMDQ_DCB_NUM_QUEUES 128 /**< Maximum nb. of VMDQ DCB queues. */
285 * This enum indicates the possible number of queue pools
286 * in VMDQ+DCB configurations.
288 enum rte_eth_nb_pools {
289 ETH_16_POOLS = 16, /**< 16 pools with DCB. */
290 ETH_32_POOLS = 32 /**< 32 pools with DCB. */
294 * A structure used to configure the VMDQ+DCB feature
295 * of an Ethernet port.
297 * Using this feature, packets are routed to a pool of queues, based
298 * on the vlan id in the vlan tag, and then to a specific queue within
299 * that pool, using the user priority vlan tag field.
301 * A default pool may be used, if desired, to route all traffic which
302 * does not match the vlan filter rules.
304 struct rte_eth_vmdq_dcb_conf {
305 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
306 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
307 uint8_t default_pool; /**< The default pool, if applicable */
308 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
310 uint16_t vlan_id; /**< The vlan id of the received frame */
311 uint64_t pools; /**< Bitmask of pools for packet rx */
312 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
313 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
314 /**< Selects a queue in a pool */
318 * A structure used to configure the TX features of an Ethernet port.
319 * For future extensions.
321 struct rte_eth_txmode {
325 * A structure used to configure an RX ring of an Ethernet port.
327 struct rte_eth_rxconf {
328 struct rte_eth_thresh rx_thresh; /**< RX ring threshold registers. */
329 uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
333 * A structure used to configure a TX ring of an Ethernet port.
335 struct rte_eth_txconf {
336 struct rte_eth_thresh tx_thresh; /**< TX ring threshold registers. */
337 uint16_t tx_rs_thresh; /**< Drives the setting of RS bit on TXDs. */
338 uint16_t tx_free_thresh; /**< Drives the freeing of TX buffers. */
342 * This enum indicates the flow control mode
344 enum rte_eth_fc_mode {
345 RTE_FC_NONE = 0, /**< Disable flow control. */
346 RTE_FC_RX_PAUSE, /**< RX pause frame, enable flowctrl on TX side. */
347 RTE_FC_TX_PAUSE, /**< TX pause frame, enable flowctrl on RX side. */
348 RTE_FC_FULL /**< Enable flow control on both side. */
352 * A structure used to configure Ethernet flow control parameter.
353 * These parameters will be configured into the register of the NIC.
354 * Please refer to the corresponding data sheet for proper value.
356 struct rte_eth_fc_conf {
357 uint32_t high_water; /**< High threshold value to trigger XOFF */
358 uint32_t low_water; /**< Low threshold value to trigger XON */
359 uint16_t pause_time; /**< Pause quota in the Pause frame */
360 uint16_t send_xon; /**< Is XON frame need be sent */
361 enum rte_eth_fc_mode mode; /**< Link flow control mode */
365 * Flow Director setting modes: none (default), signature or perfect.
368 RTE_FDIR_MODE_NONE = 0, /**< Disable FDIR support. */
369 RTE_FDIR_MODE_SIGNATURE, /**< Enable FDIR signature filter mode. */
370 RTE_FDIR_MODE_PERFECT, /**< Enable FDIR perfect filter mode. */
374 * Memory space that can be configured to store Flow Director filters
375 * in the board memory.
377 enum rte_fdir_pballoc_type {
378 RTE_FDIR_PBALLOC_64K = 0, /**< 64k. */
379 RTE_FDIR_PBALLOC_128K, /**< 128k. */
380 RTE_FDIR_PBALLOC_256K, /**< 256k. */
384 * Select report mode of FDIR hash information in RX descriptors.
386 enum rte_fdir_status_mode {
387 RTE_FDIR_NO_REPORT_STATUS = 0, /**< Never report FDIR hash. */
388 RTE_FDIR_REPORT_STATUS, /**< Only report FDIR hash for matching pkts. */
389 RTE_FDIR_REPORT_STATUS_ALWAYS, /**< Always report FDIR hash. */
393 * A structure used to configure the Flow Director (FDIR) feature
394 * of an Ethernet port.
396 * If mode is RTE_FDIR_DISABLE, the pballoc value is ignored.
398 struct rte_fdir_conf {
399 enum rte_fdir_mode mode; /**< Flow Director mode. */
400 enum rte_fdir_pballoc_type pballoc; /**< Space for FDIR filters. */
401 enum rte_fdir_status_mode status; /**< How to report FDIR hash. */
402 /* Offset of flexbytes field in RX packets (in 16-bit word units). */
403 uint8_t flexbytes_offset;
404 /* RX queue of packets matching a "drop" filter in perfect mode. */
409 * Possible l4type of FDIR filters.
412 RTE_FDIR_L4TYPE_NONE = 0, /**< Nnoe. */
413 RTE_FDIR_L4TYPE_UDP, /**< UDP. */
414 RTE_FDIR_L4TYPE_TCP, /**< TCP. */
415 RTE_FDIR_L4TYPE_SCTP, /**< SCTP. */
419 * Select IPv4 or IPv6 FDIR filters.
422 RTE_FDIR_IPTYPE_IPV4 = 0, /**< IPv4. */
423 RTE_FDIR_IPTYPE_IPV6 , /**< IPv6. */
427 * A structure used to define a FDIR packet filter.
429 struct rte_fdir_filter {
430 uint16_t flex_bytes; /**< Flex bytes value to match. */
431 uint16_t vlan_id; /**< VLAN ID value to match, 0 otherwise. */
432 uint16_t port_src; /**< Source port to match, 0 otherwise. */
433 uint16_t port_dst; /**< Destination port to match, 0 otherwise. */
435 uint32_t ipv4_addr; /**< IPv4 source address to match. */
436 uint32_t ipv6_addr[4]; /**< IPv6 source address to match. */
437 } ip_src; /**< IPv4/IPv6 source address to match (union of above). */
439 uint32_t ipv4_addr; /**< IPv4 destination address to match. */
440 uint32_t ipv6_addr[4]; /**< IPv6 destination address to match */
441 } ip_dst; /**< IPv4/IPv6 destination address to match (union of above). */
442 enum rte_l4type l4type; /**< l4type to match: NONE/UDP/TCP/SCTP. */
443 enum rte_iptype iptype; /**< IP packet type to match: IPv4 or IPv6. */
447 * A structure used to configure FDIR masks that are used by the device
448 * to match the various fields of RX packet headers.
450 struct rte_fdir_masks {
451 /** When set to 1, packet l4type is not relevant in filters, and
452 source and destination port masks must be set to zero. */
453 uint8_t only_ip_flow;
454 uint8_t vlan_id; /**< If set to 1, vlan_id is relevant in filters. */
455 uint8_t vlan_prio; /**< If set to 1, vlan_prio is relevant in filters. */
456 uint8_t flexbytes; /**< If set to 1, flexbytes is relevant in filters. */
457 /** Mask of Destination IPv4 Address. All bits set to 1 define the
458 relevant bits to use in the destination address of an IPv4 packet
459 when matching it against FDIR filters. */
460 uint32_t dst_ipv4_mask;
461 /** Mask of Source IPv4 Address. All bits set to 1 define
462 the relevant bits to use in the source address of an IPv4 packet
463 when matching it against FDIR filters. */
464 uint32_t src_ipv4_mask;
465 /** Mask of Source IPv6 Address. All bits set to 1 define the
466 relevant BYTES to use in the source address of an IPv6 packet
467 when matching it against FDIR filters. */
468 uint16_t src_ipv6_mask;
469 /** Mask of Source Port. All bits set to 1 define the relevant
470 bits to use in the source port of an IP packets when matching it
471 against FDIR filters. */
472 uint16_t src_port_mask;
473 /** Mask of Destination Port. All bits set to 1 define the relevant
474 bits to use in the destination port of an IP packet when matching it
475 against FDIR filters. */
476 uint16_t dst_port_mask;
480 * A structure used to report the status of the flow director filters in use.
482 struct rte_eth_fdir {
483 /** Number of filters with collision indication. */
485 /** Number of free (non programmed) filters. */
487 /** The Lookup hash value of the added filter that updated the value
488 of the MAXLEN field */
490 /** Longest linked list of filters in the table. */
492 /** Number of added filters. */
494 /** Number of removed filters. */
496 /** Number of failed added filters (no more space in device). */
498 /** Number of failed removed filters. */
503 * A structure used to enable/disable specific device interrupts.
505 struct rte_intr_conf {
506 /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
511 * A structure used to configure an Ethernet port.
512 * Depending upon the RX multi-queue mode, extra advanced
513 * configuration settings may be needed.
515 struct rte_eth_conf {
517 /**< ETH_LINK_SPEED_10[0|00|000], or 0 for autonegotation */
518 uint16_t link_duplex;
519 /**< ETH_LINK_[HALF_DUPLEX|FULL_DUPLEX], or 0 for autonegotation */
520 struct rte_eth_rxmode rxmode; /**< Port RX configuration. */
521 struct rte_eth_txmode txmode; /**< Port TX configuration. */
523 struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
524 struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
525 /**< Port vmdq+dcb configuration. */
526 } rx_adv_conf; /**< Port RX filtering configuration (union). */
527 struct rte_fdir_conf fdir_conf; /**< FDIR configuration. */
528 struct rte_intr_conf intr_conf; /**< Interrupt mode configuration. */
532 * A structure used to retrieve the contextual information of
533 * an Ethernet device, such as the controlling driver of the device,
534 * its PCI context, etc...
536 struct rte_eth_dev_info {
537 struct rte_pci_device *pci_dev; /**< Device PCI information. */
538 const char *driver_name; /**< Device Driver name. */
539 uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */
540 uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */
541 uint16_t max_rx_queues; /**< Maximum number of RX queues. */
542 uint16_t max_tx_queues; /**< Maximum number of TX queues. */
543 uint32_t max_mac_addrs; /**< Maximum number of MAC addresses. */
550 struct rte_eth_dev_callback;
551 /** @internal Structure to keep track of registered callbacks */
552 TAILQ_HEAD(rte_eth_dev_cb_list, rte_eth_dev_callback);
555 * Definitions of all functions exported by an Ethernet driver through the
556 * the generic structure of type *eth_dev_ops* supplied in the *rte_eth_dev*
557 * structure associated with an Ethernet device.
560 typedef int (*eth_dev_configure_t)(struct rte_eth_dev *dev, uint16_t nb_rx_q,
562 /**< Ethernet device configuration. */
564 typedef int (*eth_dev_start_t)(struct rte_eth_dev *dev);
565 /**< Function used to start a configured Ethernet device. */
567 typedef void (*eth_dev_stop_t)(struct rte_eth_dev *dev);
568 /**< Function used to stop a configured Ethernet device. */
570 typedef void (*eth_dev_close_t)(struct rte_eth_dev *dev);
571 /**< @internal Function used to close a configured Ethernet device. */
573 typedef void (*eth_promiscuous_enable_t)(struct rte_eth_dev *dev);
574 /**< Function used to enable the RX promiscuous mode of an Ethernet device. */
576 typedef void (*eth_promiscuous_disable_t)(struct rte_eth_dev *dev);
577 /**< Function used to disable the RX promiscuous mode of an Ethernet device. */
579 typedef void (*eth_allmulticast_enable_t)(struct rte_eth_dev *dev);
580 /**< Enable the receipt of all multicast packets by an Ethernet device. */
582 typedef void (*eth_allmulticast_disable_t)(struct rte_eth_dev *dev);
583 /**< Disable the receipt of all multicast packets by an Ethernet device. */
585 typedef int (*eth_link_update_t)(struct rte_eth_dev *dev,
586 int wait_to_complete);
587 /**< Get link speed, duplex mode and state (up/down) of an Ethernet device. */
589 typedef void (*eth_stats_get_t)(struct rte_eth_dev *dev,
590 struct rte_eth_stats *igb_stats);
591 /**< Get global I/O statistics of an Ethernet device. */
593 typedef void (*eth_stats_reset_t)(struct rte_eth_dev *dev);
594 /**< Reset global I/O statistics of an Ethernet device to 0. */
596 typedef void (*eth_dev_infos_get_t)(struct rte_eth_dev *dev,
597 struct rte_eth_dev_info *dev_info);
598 /**< Get specific informations of an Ethernet device. */
600 typedef int (*eth_rx_queue_setup_t)(struct rte_eth_dev *dev,
601 uint16_t rx_queue_id,
603 unsigned int socket_id,
604 const struct rte_eth_rxconf *rx_conf,
605 struct rte_mempool *mb_pool);
606 /**< Set up a receive queue of an Ethernet device. */
608 typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
609 uint16_t tx_queue_id,
611 unsigned int socket_id,
612 const struct rte_eth_txconf *tx_conf);
613 /**< Setup a transmit queue of an Ethernet device. */
615 typedef void (*vlan_filter_set_t)(struct rte_eth_dev *dev,
618 /**< Enable/Disable filtering of a VLAN Tag Identifier by an Ethernet device. */
620 typedef uint16_t (*eth_rx_burst_t)(struct igb_rx_queue *rxq,
621 struct rte_mbuf **rx_pkts,
623 /**< Retrieve input packets from a receive queue of an Ethernet device. */
625 typedef uint16_t (*eth_tx_burst_t)(struct igb_tx_queue *txq,
626 struct rte_mbuf **tx_pkts,
628 /**< Send output packets on a transmit queue of an Ethernet device. */
630 typedef int (*fdir_add_signature_filter_t)(struct rte_eth_dev *dev,
631 struct rte_fdir_filter *fdir_ftr,
633 /**< Setup a new signature filter rule on an Ethernet device */
635 typedef int (*fdir_update_signature_filter_t)(struct rte_eth_dev *dev,
636 struct rte_fdir_filter *fdir_ftr,
638 /**< Update a signature filter rule on an Ethernet device */
640 typedef int (*fdir_remove_signature_filter_t)(struct rte_eth_dev *dev,
641 struct rte_fdir_filter *fdir_ftr);
642 /**< Remove a signature filter rule on an Ethernet device */
644 typedef void (*fdir_infos_get_t)(struct rte_eth_dev *dev,
645 struct rte_eth_fdir *fdir);
646 /**< Get information about fdir status */
648 typedef int (*fdir_add_perfect_filter_t)(struct rte_eth_dev *dev,
649 struct rte_fdir_filter *fdir_ftr,
650 uint16_t soft_id, uint8_t rx_queue,
652 /**< Setup a new perfect filter rule on an Ethernet device */
654 typedef int (*fdir_update_perfect_filter_t)(struct rte_eth_dev *dev,
655 struct rte_fdir_filter *fdir_ftr,
656 uint16_t soft_id, uint8_t rx_queue,
658 /**< Update a perfect filter rule on an Ethernet device */
660 typedef int (*fdir_remove_perfect_filter_t)(struct rte_eth_dev *dev,
661 struct rte_fdir_filter *fdir_ftr,
663 /**< Remove a perfect filter rule on an Ethernet device */
665 typedef int (*fdir_set_masks_t)(struct rte_eth_dev *dev,
666 struct rte_fdir_masks *fdir_masks);
667 /**< Setup flow director masks on an Ethernet device */
669 typedef int (*flow_ctrl_set_t)(struct rte_eth_dev *dev,
670 struct rte_eth_fc_conf *fc_conf);
671 /**< Setup flow control parameter on an Ethernet device */
673 typedef int (*eth_dev_led_on_t)(struct rte_eth_dev *dev);
674 /**< Turn on SW controllable LED on an Ethernet device */
676 typedef int (*eth_dev_led_off_t)(struct rte_eth_dev *dev);
677 /**< Turn off SW controllable LED on an Ethernet device */
679 typedef void (*eth_mac_addr_remove_t)(struct rte_eth_dev *dev, uint32_t index);
680 /**< Remove MAC address from receive address register */
682 typedef void (*eth_mac_addr_add_t)(struct rte_eth_dev *dev,
683 struct ether_addr *mac_addr,
686 /**< Set a MAC address into Receive Address Address Register */
689 * A structure containing the functions exported by an Ethernet driver.
692 eth_dev_configure_t dev_configure; /**< Configure device. */
693 eth_dev_start_t dev_start; /**< Start device. */
694 eth_dev_stop_t dev_stop; /**< Stop device. */
695 eth_dev_close_t dev_close; /**< Close device. */
696 eth_promiscuous_enable_t promiscuous_enable; /**< Promiscuous ON. */
697 eth_promiscuous_disable_t promiscuous_disable;/**< Promiscuous OFF. */
698 eth_allmulticast_enable_t allmulticast_enable;/**< RX multicast ON. */
699 eth_allmulticast_disable_t allmulticast_disable;/**< RX multicast OF. */
700 eth_link_update_t link_update; /**< Get device link state. */
701 eth_stats_get_t stats_get; /**< Get device statistics. */
702 eth_stats_reset_t stats_reset; /**< Reset device statistics. */
703 eth_dev_infos_get_t dev_infos_get; /**< Get device info. */
704 vlan_filter_set_t vlan_filter_set; /**< Filter VLAN on/off. */
705 eth_rx_queue_setup_t rx_queue_setup;/**< Set up device RX queue.*/
706 eth_tx_queue_setup_t tx_queue_setup;/**< Set up device TX queue.*/
707 eth_dev_led_on_t dev_led_on; /**< Turn on LED. */
708 eth_dev_led_off_t dev_led_off; /**< Turn off LED. */
709 flow_ctrl_set_t flow_ctrl_set; /**< Setup flow control. */
710 eth_mac_addr_remove_t mac_addr_remove; /**< Remove MAC address */
711 eth_mac_addr_add_t mac_addr_add; /**< Add a MAC address */
713 /** Add a signature filter. */
714 fdir_add_signature_filter_t fdir_add_signature_filter;
715 /** Update a signature filter. */
716 fdir_update_signature_filter_t fdir_update_signature_filter;
717 /** Remove a signature filter. */
718 fdir_remove_signature_filter_t fdir_remove_signature_filter;
719 /** Get information about FDIR status. */
720 fdir_infos_get_t fdir_infos_get;
721 /** Add a perfect filter. */
722 fdir_add_perfect_filter_t fdir_add_perfect_filter;
723 /** Update a perfect filter. */
724 fdir_update_perfect_filter_t fdir_update_perfect_filter;
725 /** Remove a perfect filter. */
726 fdir_remove_perfect_filter_t fdir_remove_perfect_filter;
727 /** Setup masks for FDIR filtering. */
728 fdir_set_masks_t fdir_set_masks;
732 * The generic data structure associated with each ethernet device.
734 * Pointers to burst-oriented packet receive and transmit functions are
735 * located at the beginning of the structure, along with the pointer to
736 * where all the data elements for the particular device are stored in shared
737 * memory. This split allows the function pointer and driver data to be per-
738 * process, while the actual configuration data for the device is shared.
741 eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
742 eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
743 struct rte_eth_dev_data *data; /**< Pointer to device data */
744 const struct eth_driver *driver;/**< Driver for this device */
745 struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
746 struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */
747 struct rte_eth_dev_cb_list callbacks; /**< User application callbacks */
751 * The data part, with no function pointers, associated with each ethernet device.
753 * This structure is safe to place in shared memory to be common among different
754 * processes in a multi-process configuration.
756 struct rte_eth_dev_data {
757 struct igb_rx_queue **rx_queues; /**< Array of pointers to RX queues. */
758 struct igb_tx_queue **tx_queues; /**< Array of pointers to TX queues. */
759 uint16_t nb_rx_queues; /**< Number of RX queues. */
760 uint16_t nb_tx_queues; /**< Number of TX queues. */
762 void *dev_private; /**< PMD-specific private data */
764 struct rte_eth_link dev_link;
765 /**< Link-level information & status */
767 struct rte_eth_conf dev_conf; /**< Configuration applied to device. */
768 uint16_t max_frame_size; /**< Default is ETHER_MAX_LEN (1518). */
770 uint64_t rx_mbuf_alloc_failed; /**< RX ring mbuf allocation failures. */
771 struct ether_addr* mac_addrs;/**< Device Ethernet Link address. */
772 uint8_t port_id; /**< Device [external] port identifier. */
773 uint8_t promiscuous : 1, /**< RX promiscuous mode ON(1) / OFF(0). */
774 scattered_rx : 1, /**< RX of scattered packets is ON(1) / OFF(0) */
775 all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
776 dev_started : 1; /**< Device state: STARTED(1) / STOPPED(0). */
780 * The pool of *rte_eth_dev* structures. The size of the pool
781 * is configured at compile-time in the <rte_ethdev.c> file.
783 extern struct rte_eth_dev rte_eth_devices[];
786 * Get the total number of Ethernet devices that have been successfully
787 * initialized by the [matching] Ethernet driver during the PCI probing phase.
788 * All devices whose port identifier is in the range
789 * [0, rte_eth_dev_count() - 1] can be operated on by network applications.
792 * - The total number of usable Ethernet devices.
794 extern uint8_t rte_eth_dev_count(void);
798 * Initialization function of an Ethernet driver invoked for each matching
799 * Ethernet PCI device detected during the PCI probing phase.
802 * The pointer to the [matching] Ethernet driver structure supplied by
803 * the PMD when it registered itself.
805 * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
806 * associated with the matching device and which have been [automatically]
807 * allocated in the *rte_eth_devices* array.
808 * The *eth_dev* structure is supplied to the driver initialization function
809 * with the following fields already initialized:
811 * - *pci_dev*: Holds the pointers to the *rte_pci_device* structure which
812 * contains the generic PCI information of the matching device.
814 * - *dev_private*: Holds a pointer to the device private data structure.
816 * - *max_frame_size*: Contains the default Ethernet maximum frame length
819 * - *port_id*: Contains the port index of the device (actually the index
820 * of the *eth_dev* structure in the *rte_eth_devices* array).
823 * - 0: Success, the device is properly initialized by the driver.
824 * In particular, the driver MUST have set up the *dev_ops* pointer
825 * of the *eth_dev* structure.
826 * - <0: Error code of the device initialization failure.
828 typedef int (*eth_dev_init_t)(struct eth_driver *eth_drv,
829 struct rte_eth_dev *eth_dev);
832 * The structure associated with a PMD Ethernet driver.
834 * Each Ethernet driver acts as a PCI driver and is represented by a generic
835 * *eth_driver* structure that holds:
837 * - An *rte_pci_driver* structure (which must be the first field).
839 * - The *eth_dev_init* function invoked for each matching PCI device.
841 * - The size of the private data to allocate for each matching device.
844 struct rte_pci_driver pci_drv; /**< The PMD is also a PCI driver. */
845 eth_dev_init_t eth_dev_init; /**< Device init function. */
846 unsigned int dev_private_size; /**< Size of device private data. */
850 * A function invoked by the initialization function of an Ethernet driver
851 * to simultaneously register itself as a PCI driver and as an Ethernet
852 * Poll Mode Driver (PMD).
855 * The pointer to the *eth_driver* structure associated with
856 * the Ethernet driver.
858 extern void rte_eth_driver_register(struct eth_driver *eth_drv);
861 * The initialization function of the driver for
862 * Intel(r) IGB Gigabit Ethernet Controller devices.
863 * This function is invoked once at EAL start time.
867 extern int rte_igb_pmd_init(void);
870 * The initialization function of the driver for
871 * Intel(r) EM Gigabit Ethernet Controller devices.
872 * This function is invoked once at EAL start time.
876 extern int rte_em_pmd_init(void);
879 * The initialization function of the driver for 1Gbps Intel IGB_VF
881 * Invoked once at EAL start time.
885 extern int rte_igbvf_pmd_init(void);
888 * The initialization function of the driver for 10Gbps Intel IXGBE
890 * Invoked once at EAL start time.
894 extern int rte_ixgbe_pmd_init(void);
897 * The initialization function of the driver for 10Gbps Intel IXGBE_VF
899 * Invoked once at EAL start time.
903 extern int rte_ixgbevf_pmd_init(void);
906 * The initialization function of *all* supported and enabled drivers.
907 * Right now, the following PMDs are supported:
913 * This function is invoked once at EAL start time.
916 * Error code of the device initialization failure,
917 * -ENODEV if there are no drivers available
918 * (e.g. if all driver config options are = n).
921 int rte_pmd_init_all(void)
925 #ifdef RTE_LIBRTE_IGB_PMD
926 if ((ret = rte_igb_pmd_init()) != 0) {
927 RTE_LOG(ERR, PMD, "Cannot init igb PMD\n");
930 if ((ret = rte_igbvf_pmd_init()) != 0) {
931 RTE_LOG(ERR, PMD, "Cannot init igbvf PMD\n");
934 #endif /* RTE_LIBRTE_IGB_PMD */
936 #ifdef RTE_LIBRTE_EM_PMD
937 if ((ret = rte_em_pmd_init()) != 0) {
938 RTE_LOG(ERR, PMD, "Cannot init em PMD\n");
941 #endif /* RTE_LIBRTE_EM_PMD */
943 #ifdef RTE_LIBRTE_IXGBE_PMD
944 if ((ret = rte_ixgbe_pmd_init()) != 0) {
945 RTE_LOG(ERR, PMD, "Cannot init ixgbe PMD\n");
948 if ((ret = rte_ixgbevf_pmd_init()) != 0) {
949 RTE_LOG(ERR, PMD, "Cannot init ixgbevf PMD\n");
952 #endif /* RTE_LIBRTE_IXGBE_PMD */
955 RTE_LOG(ERR, PMD, "No PMD(s) are configured\n");
960 * Configure an Ethernet device.
961 * This function must be invoked first before any other function in the
962 * Ethernet API. This function can also be re-invoked when a device is in the
966 * The port identifier of the Ethernet device to configure.
968 * The number of receive queues to set up for the Ethernet device.
970 * The number of transmit queues to set up for the Ethernet device.
972 * The pointer to the configuration data to be used for the Ethernet device.
973 * The *rte_eth_conf* structure includes:
974 * - the hardware offload features to activate, with dedicated fields for
975 * each statically configurable offload hardware feature provided by
976 * Ethernet devices, such as IP checksum or VLAN tag stripping for
978 * - the Receive Side Scaling (RSS) configuration when using multiple RX
981 * Embedding all configuration information in a single data structure
982 * is the more flexible method that allows the addition of new features
983 * without changing the syntax of the API.
985 * - 0: Success, device configured.
986 * - <0: Error code returned by the driver configuration function.
988 extern int rte_eth_dev_configure(uint8_t port_id,
989 uint16_t nb_rx_queue,
990 uint16_t nb_tx_queue,
991 const struct rte_eth_conf *eth_conf);
994 * Allocate and set up a receive queue for an Ethernet device.
996 * The function allocates a contiguous block of memory for *nb_rx_desc*
997 * receive descriptors from a memory zone associated with *socket_id*
998 * and initializes each receive descriptor with a network buffer allocated
999 * from the memory pool *mb_pool*.
1002 * The port identifier of the Ethernet device.
1003 * @param rx_queue_id
1004 * The index of the receive queue to set up.
1005 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1006 * to rte_eth_dev_configure().
1008 * The number of receive descriptors to allocate for the receive ring.
1010 * The *socket_id* argument is the socket identifier in case of NUMA.
1011 * The value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1012 * the DMA memory allocated for the receive descriptors of the ring.
1014 * The pointer to the configuration data to be used for the receive queue.
1015 * The *rx_conf* structure contains an *rx_thresh* structure with the values
1016 * of the Prefetch, Host, and Write-Back threshold registers of the receive
1019 * The pointer to the memory pool from which to allocate *rte_mbuf* network
1020 * memory buffers to populate each descriptor of the receive ring.
1022 * - 0: Success, receive queue correctly set up.
1023 * - -EINVAL: The size of network buffers which can be allocated from the
1024 * memory pool does not fit the various buffer sizes allowed by the
1025 * device controller.
1026 * - -ENOMEM: Unable to allocate the receive ring descriptors or to
1027 * allocate network memory buffers from the memory pool when
1028 * initializing receive descriptors.
1030 extern int rte_eth_rx_queue_setup(uint8_t port_id, uint16_t rx_queue_id,
1031 uint16_t nb_rx_desc, unsigned int socket_id,
1032 const struct rte_eth_rxconf *rx_conf,
1033 struct rte_mempool *mb_pool);
1036 * Allocate and set up a transmit queue for an Ethernet device.
1039 * The port identifier of the Ethernet device.
1040 * @param tx_queue_id
1041 * The index of the transmit queue to set up.
1042 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1043 * to rte_eth_dev_configure().
1045 * The number of transmit descriptors to allocate for the transmit ring.
1047 * The *socket_id* argument is the socket identifier in case of NUMA.
1048 * Its value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1049 * the DMA memory allocated for the transmit descriptors of the ring.
1051 * The pointer to the configuration data to be used for the transmit queue.
1052 * The *tx_conf* structure contains the following data:
1053 * - The *tx_thresh* structure with the values of the Prefetch, Host, and
1054 * Write-Back threshold registers of the transmit ring.
1055 * When setting Write-Back threshold to the value greater then zero,
1056 * *tx_rs_thresh* value should be explicitly set to one.
1057 * - The *tx_free_thresh* value indicates the [minimum] number of network
1058 * buffers that must be pending in the transmit ring to trigger their
1059 * [implicit] freeing by the driver transmit function.
1060 * - The *tx_rs_thresh* value indicates the [minimum] number of transmit
1061 * descriptors that must be pending in the transmit ring before setting the
1062 * RS bit on a descriptor by the driver transmit function.
1063 * The *tx_rs_thresh* value should be less or equal then
1064 * *tx_free_thresh* value, and both of them should be less then
1067 * Note that setting *tx_free_thresh* or *tx_rs_thresh* value to 0 forces
1068 * the transmit function to use default values.
1070 * - 0: Success, the transmit queue is correctly set up.
1071 * - -ENOMEM: Unable to allocate the transmit ring descriptors.
1073 extern int rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
1074 uint16_t nb_tx_desc, unsigned int socket_id,
1075 const struct rte_eth_txconf *tx_conf);
1078 * Start an Ethernet device.
1080 * The device start step is the last one and consists of setting the configured
1081 * offload features and in starting the transmit and the receive units of the
1083 * On success, all basic functions exported by the Ethernet API (link status,
1084 * receive/transmit, and so on) can be invoked.
1087 * The port identifier of the Ethernet device.
1089 * - 0: Success, Ethernet device started.
1090 * - <0: Error code of the driver device start function.
1092 extern int rte_eth_dev_start(uint8_t port_id);
1095 * Stop an Ethernet device. The device can be restarted with a call to
1096 * rte_eth_dev_start()
1099 * The port identifier of the Ethernet device.
1101 extern void rte_eth_dev_stop(uint8_t port_id);
1104 * Close an Ethernet device. The device cannot be restarted!
1107 * The port identifier of the Ethernet device.
1109 extern void rte_eth_dev_close(uint8_t port_id);
1112 * Enable receipt in promiscuous mode for an Ethernet device.
1115 * The port identifier of the Ethernet device.
1117 extern void rte_eth_promiscuous_enable(uint8_t port_id);
1120 * Disable receipt in promiscuous mode for an Ethernet device.
1123 * The port identifier of the Ethernet device.
1125 extern void rte_eth_promiscuous_disable(uint8_t port_id);
1128 * Return the value of promiscuous mode for an Ethernet device.
1131 * The port identifier of the Ethernet device.
1133 * - (1) if promiscuous is enabled
1134 * - (0) if promiscuous is disabled.
1137 extern int rte_eth_promiscuous_get(uint8_t port_id);
1140 * Enable the receipt of any multicast frame by an Ethernet device.
1143 * The port identifier of the Ethernet device.
1145 extern void rte_eth_allmulticast_enable(uint8_t port_id);
1148 * Disable the receipt of all multicast frames by an Ethernet device.
1151 * The port identifier of the Ethernet device.
1153 extern void rte_eth_allmulticast_disable(uint8_t port_id);
1156 * Return the value of allmulticast mode for an Ethernet device.
1159 * The port identifier of the Ethernet device.
1161 * - (1) if allmulticast is enabled
1162 * - (0) if allmulticast is disabled.
1165 extern int rte_eth_allmulticast_get(uint8_t port_id);
1168 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1169 * or FULL-DUPLEX) of the physical link of an Ethernet device. It might need
1170 * to wait up to 9 seconds in it.
1173 * The port identifier of the Ethernet device.
1175 * A pointer to an *rte_eth_link* structure to be filled with
1176 * the status, the speed and the mode of the Ethernet device link.
1178 extern void rte_eth_link_get(uint8_t port_id, struct rte_eth_link *link);
1181 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1182 * or FULL-DUPLEX) of the physical link of an Ethernet device. It is a no-wait
1183 * version of rte_eth_link_get().
1186 * The port identifier of the Ethernet device.
1188 * A pointer to an *rte_eth_link* structure to be filled with
1189 * the status, the speed and the mode of the Ethernet device link.
1191 extern void rte_eth_link_get_nowait(uint8_t port_id,
1192 struct rte_eth_link *link);
1195 * Retrieve the general I/O statistics of an Ethernet device.
1198 * The port identifier of the Ethernet device.
1200 * A pointer to a structure of type *rte_eth_stats* to be filled with
1201 * the values of device counters for the following set of statistics:
1202 * - *ipackets* with the total of successfully received packets.
1203 * - *opackets* with the total of successfully transmitted packets.
1204 * - *ibytes* with the total of successfully received bytes.
1205 * - *obytes* with the total of successfully transmitted bytes.
1206 * - *ierrors* with the total of erroneous received packets.
1207 * - *oerrors* with the total of failed transmitted packets.
1209 extern void rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats);
1212 * Reset the general I/O statistics of an Ethernet device.
1215 * The port identifier of the Ethernet device.
1217 extern void rte_eth_stats_reset(uint8_t port_id);
1220 * Retrieve the Ethernet address of an Ethernet device.
1223 * The port identifier of the Ethernet device.
1225 * A pointer to a structure of type *ether_addr* to be filled with
1226 * the Ethernet address of the Ethernet device.
1228 extern void rte_eth_macaddr_get(uint8_t port_id, struct ether_addr *mac_addr);
1231 * Retrieve the contextual information of an Ethernet device.
1234 * The port identifier of the Ethernet device.
1236 * A pointer to a structure of type *rte_eth_dev_info* to be filled with
1237 * the contextual information of the Ethernet device.
1239 extern void rte_eth_dev_info_get(uint8_t port_id,
1240 struct rte_eth_dev_info *dev_info);
1243 * Enable/Disable hardware filtering by an Ethernet device of received
1244 * VLAN packets tagged with a given VLAN Tag Identifier.
1247 * The port identifier of the Ethernet device.
1249 * The VLAN Tag Identifier whose filtering must be enabled or disabled.
1251 * If > 0, enable VLAN filtering of VLAN packets tagged with *vlan_id*.
1252 * Otherwise, disable VLAN filtering of VLAN packets tagged with *vlan_id*.
1254 * - (0) if successful.
1255 * - (-ENOSUP) if hardware-assisted VLAN filtering not configured.
1256 * - (-ENODEV) if *port_id* invalid.
1257 * - (-ENOSYS) if VLAN filtering on *port_id* disabled.
1258 * - (-EINVAL) if *vlan_id* > 4095.
1260 extern int rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on);
1264 * Retrieve a burst of input packets from a receive queue of an Ethernet
1265 * device. The retrieved packets are stored in *rte_mbuf* structures whose
1266 * pointers are supplied in the *rx_pkts* array.
1268 * The rte_eth_rx_burst() function loops, parsing the RX ring of the
1269 * receive queue, up to *nb_pkts* packets, and for each completed RX
1270 * descriptor in the ring, it performs the following operations:
1272 * - Initialize the *rte_mbuf* data structure associated with the
1273 * RX descriptor according to the information provided by the NIC into
1274 * that RX descriptor.
1276 * - Store the *rte_mbuf* data structure into the next entry of the
1279 * - Replenish the RX descriptor with a new *rte_mbuf* buffer
1280 * allocated from the memory pool associated with the receive queue at
1281 * initialization time.
1283 * When retrieving an input packet that was scattered by the controller
1284 * into multiple receive descriptors, the rte_eth_rx_burst() function
1285 * appends the associated *rte_mbuf* buffers to the first buffer of the
1288 * The rte_eth_rx_burst() function returns the number of packets
1289 * actually retrieved, which is the number of *rte_mbuf* data structures
1290 * effectively supplied into the *rx_pkts* array.
1291 * A return value equal to *nb_pkts* indicates that the RX queue contained
1292 * at least *rx_pkts* packets, and this is likely to signify that other
1293 * received packets remain in the input queue. Applications implementing
1294 * a "retrieve as much received packets as possible" policy can check this
1295 * specific case and keep invoking the rte_eth_rx_burst() function until
1296 * a value less than *nb_pkts* is returned.
1298 * This receive method has the following advantages:
1300 * - It allows a run-to-completion network stack engine to retrieve and
1301 * to immediately process received packets in a fast burst-oriented
1302 * approach, avoiding the overhead of unnecessary intermediate packet
1303 * queue/dequeue operations.
1305 * - Conversely, it also allows an asynchronous-oriented processing
1306 * method to retrieve bursts of received packets and to immediately
1307 * queue them for further parallel processing by another logical core,
1308 * for instance. However, instead of having received packets being
1309 * individually queued by the driver, this approach allows the invoker
1310 * of the rte_eth_rx_burst() function to queue a burst of retrieved
1311 * packets at a time and therefore dramatically reduce the cost of
1312 * enqueue/dequeue operations per packet.
1314 * - It allows the rte_eth_rx_burst() function of the driver to take
1315 * advantage of burst-oriented hardware features (CPU cache,
1316 * prefetch instructions, and so on) to minimize the number of CPU
1317 * cycles per packet.
1319 * To summarize, the proposed receive API enables many
1320 * burst-oriented optimizations in both synchronous and asynchronous
1321 * packet processing environments with no overhead in both cases.
1323 * The rte_eth_rx_burst() function does not provide any error
1324 * notification to avoid the corresponding overhead. As a hint, the
1325 * upper-level application might check the status of the device link once
1326 * being systematically returned a 0 value for a given number of tries.
1329 * The port identifier of the Ethernet device.
1331 * The index of the receive queue from which to retrieve input packets.
1332 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1333 * to rte_eth_dev_configure().
1335 * The address of an array of pointers to *rte_mbuf* structures that
1336 * must be large enough to store *nb_pkts* pointers in it.
1338 * The maximum number of packets to retrieve.
1340 * The number of packets actually retrieved, which is the number
1341 * of pointers to *rte_mbuf* structures effectively supplied to the
1344 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1345 extern uint16_t rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1346 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
1348 static inline uint16_t
1349 rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1350 struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
1352 struct rte_eth_dev *dev;
1354 dev = &rte_eth_devices[port_id];
1355 return (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id], rx_pkts, nb_pkts);
1360 * Send a burst of output packets on a transmit queue of an Ethernet device.
1362 * The rte_eth_tx_burst() function is invoked to transmit output packets
1363 * on the output queue *queue_id* of the Ethernet device designated by its
1365 * The *nb_pkts* parameter is the number of packets to send which are
1366 * supplied in the *tx_pkts* array of *rte_mbuf* structures.
1367 * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
1368 * up to the number of transmit descriptors available in the TX ring of the
1370 * For each packet to send, the rte_eth_tx_burst() function performs
1371 * the following operations:
1373 * - Pick up the next available descriptor in the transmit ring.
1375 * - Free the network buffer previously sent with that descriptor, if any.
1377 * - Initialize the transmit descriptor with the information provided
1378 * in the *rte_mbuf data structure.
1380 * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
1381 * the rte_eth_tx_burst() function uses several transmit descriptors
1384 * The rte_eth_tx_burst() function returns the number of packets it
1385 * actually sent. A return value equal to *nb_pkts* means that all packets
1386 * have been sent, and this is likely to signify that other output packets
1387 * could be immediately transmitted again. Applications that implement a
1388 * "send as many packets to transmit as possible" policy can check this
1389 * specific case and keep invoking the rte_eth_tx_burst() function until
1390 * a value less than *nb_pkts* is returned.
1392 * It is the responsibility of the rte_eth_tx_burst() function to
1393 * transparently free the memory buffers of packets previously sent.
1394 * This feature is driven by the *tx_free_thresh* value supplied to the
1395 * rte_eth_dev_configure() function at device configuration time.
1396 * When the number of previously sent packets reached the "minimum transmit
1397 * packets to free" threshold, the rte_eth_tx_burst() function must
1398 * [attempt to] free the *rte_mbuf* buffers of those packets whose
1399 * transmission was effectively completed.
1402 * The port identifier of the Ethernet device.
1404 * The index of the transmit queue through which output packets must be
1406 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1407 * to rte_eth_dev_configure().
1409 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
1410 * which contain the output packets.
1412 * The maximum number of packets to transmit.
1414 * The number of output packets actually stored in transmit descriptors of
1415 * the transmit ring. The return value can be less than the value of the
1416 * *tx_pkts* parameter when the transmit ring is full or has been filled up.
1418 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1419 extern uint16_t rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1420 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
1422 static inline uint16_t
1423 rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1424 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1426 struct rte_eth_dev *dev;
1428 dev = &rte_eth_devices[port_id];
1429 return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
1434 * Setup a new signature filter rule on an Ethernet device
1437 * The port identifier of the Ethernet device.
1438 * @param fdir_filter
1439 * The pointer to the fdir filter structure describing the signature filter
1441 * The *rte_fdir_filter* structure includes the values of the different fields
1442 * to match: source and destination IP addresses, vlan id, flexbytes, source
1443 * and destination ports, and so on.
1445 * The index of the RX queue where to store RX packets matching the added
1446 * signature filter defined in fdir_filter.
1448 * - (0) if successful.
1449 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1450 * - (-ENODEV) if *port_id* invalid.
1451 * - (-ENOSYS) if the FDIR mode is not configured in signature mode
1453 * - (-EINVAL) if the fdir_filter information is not correct.
1455 int rte_eth_dev_fdir_add_signature_filter(uint8_t port_id,
1456 struct rte_fdir_filter *fdir_filter,
1460 * Update a signature filter rule on an Ethernet device.
1461 * If the rule doesn't exits, it is created.
1464 * The port identifier of the Ethernet device.
1466 * The pointer to the structure describing the signature filter rule.
1467 * The *rte_fdir_filter* structure includes the values of the different fields
1468 * to match: source and destination IP addresses, vlan id, flexbytes, source
1469 * and destination ports, and so on.
1471 * The index of the RX queue where to store RX packets matching the added
1472 * signature filter defined in fdir_ftr.
1474 * - (0) if successful.
1475 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1476 * - (-ENODEV) if *port_id* invalid.
1477 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1479 * - (-EINVAL) if the fdir_filter information is not correct.
1481 int rte_eth_dev_fdir_update_signature_filter(uint8_t port_id,
1482 struct rte_fdir_filter *fdir_ftr,
1486 * Remove a signature filter rule on an Ethernet device.
1489 * The port identifier of the Ethernet device.
1491 * The pointer to the structure describing the signature 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.
1496 * - (0) if successful.
1497 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1498 * - (-ENODEV) if *port_id* invalid.
1499 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1501 * - (-EINVAL) if the fdir_filter information is not correct.
1503 int rte_eth_dev_fdir_remove_signature_filter(uint8_t port_id,
1504 struct rte_fdir_filter *fdir_ftr);
1507 * Retrieve the flow director information of an Ethernet device.
1510 * The port identifier of the Ethernet device.
1512 * A pointer to a structure of type *rte_eth_dev_fdir* to be filled with
1513 * the flow director information of the Ethernet device.
1515 * - (0) if successful.
1516 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1517 * - (-ENODEV) if *port_id* invalid.
1518 * - (-ENOSYS) if the flow director mode is not configured on *port_id*.
1520 int rte_eth_dev_fdir_get_infos(uint8_t port_id, struct rte_eth_fdir *fdir);
1523 * Add a new perfect filter rule on an Ethernet device.
1526 * The port identifier of the Ethernet device.
1527 * @param fdir_filter
1528 * The pointer to the structure describing the perfect filter rule.
1529 * The *rte_fdir_filter* structure includes the values of the different fields
1530 * to match: source and destination IP addresses, vlan id, flexbytes, source
1531 * and destination ports, and so on.
1532 * IPv6 are not supported.
1534 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1535 * packets matching the perfect filter.
1537 * The index of the RX queue where to store RX packets matching the added
1538 * perfect filter defined in fdir_filter.
1540 * If drop is set to 1, matching RX packets are stored into the RX drop
1541 * queue defined in the rte_fdir_conf.
1543 * - (0) if successful.
1544 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1545 * - (-ENODEV) if *port_id* invalid.
1546 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1548 * - (-EINVAL) if the fdir_filter information is not correct.
1550 int rte_eth_dev_fdir_add_perfect_filter(uint8_t port_id,
1551 struct rte_fdir_filter *fdir_filter,
1552 uint16_t soft_id, uint8_t rx_queue,
1556 * Update a perfect filter rule on an Ethernet device.
1557 * If the rule doesn't exits, it is created.
1560 * The port identifier of the Ethernet device.
1561 * @param fdir_filter
1562 * The pointer to the structure describing the perfect filter rule.
1563 * The *rte_fdir_filter* structure includes the values of the different fields
1564 * to match: source and destination IP addresses, vlan id, flexbytes, source
1565 * and destination ports, and so on.
1566 * IPv6 are not supported.
1568 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1569 * packets matching the perfect filter.
1571 * The index of the RX queue where to store RX packets matching the added
1572 * perfect filter defined in fdir_filter.
1574 * If drop is set to 1, matching RX packets are stored into the RX drop
1575 * queue defined in the rte_fdir_conf.
1577 * - (0) if successful.
1578 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1579 * - (-ENODEV) if *port_id* invalid.
1580 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1582 * - (-EINVAL) if the fdir_filter information is not correct.
1584 int rte_eth_dev_fdir_update_perfect_filter(uint8_t port_id,
1585 struct rte_fdir_filter *fdir_filter,
1586 uint16_t soft_id, uint8_t rx_queue,
1590 * Remove a perfect filter rule on an Ethernet device.
1593 * The port identifier of the Ethernet device.
1594 * @param fdir_filter
1595 * The pointer to the structure describing the perfect filter rule.
1596 * The *rte_fdir_filter* structure includes the values of the different fields
1597 * to match: source and destination IP addresses, vlan id, flexbytes, source
1598 * and destination ports, and so on.
1599 * IPv6 are not supported.
1601 * The soft_id value provided when adding/updating the removed filter.
1603 * - (0) if successful.
1604 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1605 * - (-ENODEV) if *port_id* invalid.
1606 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1608 * - (-EINVAL) if the fdir_filter information is not correct.
1610 int rte_eth_dev_fdir_remove_perfect_filter(uint8_t port_id,
1611 struct rte_fdir_filter *fdir_filter,
1614 * Configure globally the masks for flow director mode for an Ethernet device.
1615 * For example, the device can match packets with only the first 24 bits of
1616 * the IPv4 source address.
1618 * The following fields can be masked: IPv4 addresses and L4 port numbers.
1619 * The following fields can be either enabled or disabled completely for the
1620 * matching functionality: VLAN ID tag; VLAN Priority + CFI bit; Flexible 2-byte
1622 * IPv6 masks are not supported.
1624 * All filters must comply with the masks previously configured.
1625 * For example, with a mask equal to 255.255.255.0 for the source IPv4 address,
1626 * all IPv4 filters must be created with a source IPv4 address that fits the
1629 * This function flushes all filters that have been previously added in
1633 * The port identifier of the Ethernet device.
1635 * The pointer to the fdir mask structure describing relevant headers fields
1636 * and relevant bits to use when matching packets addresses and ports.
1637 * IPv6 masks are not supported.
1639 * - (0) if successful.
1640 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1641 * - (-ENODEV) if *port_id* invalid.
1642 * - (-ENOSYS) if the flow director mode is not configured in perfect
1643 * mode on *port_id*.
1644 * - (-EINVAL) if the fdir_filter information is not correct
1646 int rte_eth_dev_fdir_set_masks(uint8_t port_id,
1647 struct rte_fdir_masks *fdir_mask);
1650 * The eth device event type for interrupt, and maybe others in the future.
1652 enum rte_eth_event_type {
1653 RTE_ETH_EVENT_UNKNOWN, /**< unknown event type */
1654 RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
1655 RTE_ETH_EVENT_MAX /**< max value of this enum */
1658 typedef void (*rte_eth_dev_cb_fn)(uint8_t port_id, \
1659 enum rte_eth_event_type event, void *cb_arg);
1660 /**< user application callback to be registered for interrupts */
1665 * Register a callback function for specific port id.
1672 * User supplied callback function to be called.
1674 * Pointer to the parameters for the registered callback.
1677 * - On success, zero.
1678 * - On failure, a negative value.
1680 int rte_eth_dev_callback_register(uint8_t port_id,
1681 enum rte_eth_event_type event,
1682 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1685 * Unregister a callback function for specific port id.
1692 * User supplied callback function to be called.
1694 * Pointer to the parameters for the registered callback. -1 means to
1695 * remove all for the same callback address and same event.
1698 * - On success, zero.
1699 * - On failure, a negative value.
1701 int rte_eth_dev_callback_unregister(uint8_t port_id,
1702 enum rte_eth_event_type event,
1703 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1706 * @internal Executes all the user application registered callbacks for
1707 * the specific device. It is for DPDK internal user only. User
1708 * application should not call it directly.
1711 * Pointer to struct rte_eth_dev.
1713 * Eth device interrupt event type.
1718 void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
1719 enum rte_eth_event_type event);
1722 * Turn on the LED on the Ethernet device.
1723 * This function turns on the LED on the Ethernet device.
1726 * The port identifier of the Ethernet device.
1728 * - (0) if successful.
1729 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1731 * - (-ENODEV) if *port_id* invalid.
1733 int rte_eth_led_on(uint8_t port_id);
1736 * Turn off the LED on the Ethernet device.
1737 * This function turns off the LED on the Ethernet device.
1740 * The port identifier of the Ethernet device.
1742 * - (0) if successful.
1743 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1745 * - (-ENODEV) if *port_id* invalid.
1747 int rte_eth_led_off(uint8_t port_id);
1750 * Configure the Ethernet link flow control for Ethernet device
1753 * The port identifier of the Ethernet device.
1755 * The pointer to the structure of the flow control parameters.
1757 * - (0) if successful.
1758 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1759 * - (-ENODEV) if *port_id* invalid.
1760 * - (-EINVAL) if bad parameter
1761 * - (-EIO) if flow control setup failure
1763 int rte_eth_dev_flow_ctrl_set(uint8_t port_id,
1764 struct rte_eth_fc_conf *fc_conf);
1767 * Add a MAC address to an internal array of addresses used to enable whitelist
1768 * filtering to accept packets only if the destination MAC address matches.
1771 * The port identifier of the Ethernet device.
1773 * The MAC address to add.
1775 * VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
1776 * not enabled, this should be set to 0.
1778 * - (0) if successfully added or *mac_addr" was already added.
1779 * - (-ENOTSUP) if hardware doesn't support this feature.
1780 * - (-ENODEV) if *port* is invalid.
1781 * - (-ENOSPC) if no more MAC addresses can be added.
1782 * - (-EINVAL) if MAC address is invalid.
1784 int rte_eth_dev_mac_addr_add(uint8_t port, struct ether_addr *mac_addr,
1788 * Remove a MAC address from the internal array of addresses.
1791 * The port identifier of the Ethernet device.
1793 * MAC address to remove.
1795 * - (0) if successful, or *mac_addr* didn't exist.
1796 * - (-ENOTSUP) if hardware doesn't support.
1797 * - (-ENODEV) if *port* invalid.
1798 * - (-EADDRINUSE) if attempting to remove the default MAC address
1800 int rte_eth_dev_mac_addr_remove(uint8_t port, struct ether_addr *mac_addr);
1807 #endif /* _RTE_ETHDEV_H_ */