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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)
119 * - NIC queue statistics mappings
121 * Any other configuration will not be stored and will need to be re-entered
122 * 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. */
196 uint64_t q_ipackets[RTE_ETHDEV_QUEUE_STAT_CNTRS];
197 /**< Total number of queue RX packets. */
198 uint64_t q_opackets[RTE_ETHDEV_QUEUE_STAT_CNTRS];
199 /**< Total number of queue TX packets. */
200 uint64_t q_ibytes[RTE_ETHDEV_QUEUE_STAT_CNTRS];
201 /**< Total number of successfully received queue bytes. */
202 uint64_t q_obytes[RTE_ETHDEV_QUEUE_STAT_CNTRS];
203 /**< Total number of successfully transmitted queue bytes. */
204 uint64_t q_errors[RTE_ETHDEV_QUEUE_STAT_CNTRS];
205 /**< Total number of queue packets received that are dropped. */
209 * A structure used to retrieve link-level information of an Ethernet port.
211 struct rte_eth_link {
212 uint16_t link_speed; /**< ETH_LINK_SPEED_[10, 100, 1000, 10000] */
213 uint16_t link_duplex; /**< ETH_LINK_[HALF_DUPLEX, FULL_DUPLEX] */
214 uint8_t link_status : 1; /**< 1 -> link up, 0 -> link down */
215 }__attribute__((aligned(8))); /**< aligned for atomic64 read/write */
217 #define ETH_LINK_SPEED_AUTONEG 0 /**< Auto-negotiate link speed. */
218 #define ETH_LINK_SPEED_10 10 /**< 10 megabits/second. */
219 #define ETH_LINK_SPEED_100 100 /**< 100 megabits/second. */
220 #define ETH_LINK_SPEED_1000 1000 /**< 1 gigabits/second. */
221 #define ETH_LINK_SPEED_10000 10000 /**< 10 gigabits/second. */
223 #define ETH_LINK_AUTONEG_DUPLEX 0 /**< Auto-negotiate duplex. */
224 #define ETH_LINK_HALF_DUPLEX 1 /**< Half-duplex connection. */
225 #define ETH_LINK_FULL_DUPLEX 2 /**< Full-duplex connection. */
228 * A structure used to configure the ring threshold registers of an RX/TX
229 * queue for an Ethernet port.
231 struct rte_eth_thresh {
232 uint8_t pthresh; /**< Ring prefetch threshold. */
233 uint8_t hthresh; /**< Ring host threshold. */
234 uint8_t wthresh; /**< Ring writeback threshold. */
238 * A set of values to identify what method is to be used to route
239 * packets to multiple queues.
241 enum rte_eth_rx_mq_mode {
242 ETH_RSS = 0, /**< Default to RSS mode */
243 ETH_VMDQ_DCB, /**< Use VMDQ+DCB to route traffic to queues */
244 ETH_DCB_RX /**< For RX side,only DCB is on. */
248 * A set of values to identify what method is to be used to transmit
249 * packets using multi-TCs.
251 enum rte_eth_tx_mq_mode {
252 ETH_DCB_NONE = 0, /**< It is not in DCB mode. */
253 ETH_VMDQ_DCB_TX, /**< For TX side,both DCB and VT is on. */
254 ETH_DCB_TX /**< For TX side,only DCB is on. */
258 * A structure used to configure the RX features of an Ethernet port.
260 struct rte_eth_rxmode {
261 /** The multi-queue packet distribution mode to be used, e.g. RSS. */
262 enum rte_eth_rx_mq_mode mq_mode;
263 uint32_t max_rx_pkt_len; /**< Only used if jumbo_frame enabled. */
264 uint16_t split_hdr_size; /**< hdr buf size (header_split enabled).*/
265 uint8_t header_split : 1, /**< Header Split enable. */
266 hw_ip_checksum : 1, /**< IP/UDP/TCP checksum offload enable. */
267 hw_vlan_filter : 1, /**< VLAN filter enable. */
268 jumbo_frame : 1, /**< Jumbo Frame Receipt enable. */
269 hw_strip_crc : 1; /**< Enable CRC stripping by hardware. */
273 * A structure used to configure the Receive Side Scaling (RSS) feature
274 * of an Ethernet port.
275 * If not NULL, the *rss_key* pointer of the *rss_conf* structure points
276 * to an array of 40 bytes holding the RSS key to use for hashing specific
277 * header fields of received packets.
278 * Otherwise, a default random hash key is used by the device driver.
280 * The *rss_hf* field of the *rss_conf* structure indicates the different
281 * types of IPv4/IPv6 packets to which the RSS hashing must be applied.
282 * Supplying an *rss_hf* equal to zero disables the RSS feature.
284 struct rte_eth_rss_conf {
285 uint8_t *rss_key; /**< If not NULL, 40-byte hash key. */
286 uint16_t rss_hf; /**< Hash functions to apply - see below. */
289 #define ETH_RSS_IPV4 0x0001 /**< IPv4 packet. */
290 #define ETH_RSS_IPV4_TCP 0x0002 /**< IPv4/TCP packet. */
291 #define ETH_RSS_IPV6 0x0004 /**< IPv6 packet. */
292 #define ETH_RSS_IPV6_EX 0x0008 /**< IPv6 packet with extension headers.*/
293 #define ETH_RSS_IPV6_TCP 0x0010 /**< IPv6/TCP packet. */
294 #define ETH_RSS_IPV6_TCP_EX 0x0020 /**< IPv6/TCP with extension headers. */
295 /* Intel RSS extensions to UDP packets */
296 #define ETH_RSS_IPV4_UDP 0x0040 /**< IPv4/UDP packet. */
297 #define ETH_RSS_IPV6_UDP 0x0080 /**< IPv6/UDP packet. */
298 #define ETH_RSS_IPV6_UDP_EX 0x0100 /**< IPv6/UDP with extension headers. */
300 /* Definitions used for VMDQ and DCB functionality */
301 #define ETH_VMDQ_MAX_VLAN_FILTERS 64 /**< Maximum nb. of VMDQ vlan filters. */
302 #define ETH_DCB_NUM_USER_PRIORITIES 8 /**< Maximum nb. of DCB priorities. */
303 #define ETH_VMDQ_DCB_NUM_QUEUES 128 /**< Maximum nb. of VMDQ DCB queues. */
304 #define ETH_DCB_NUM_QUEUES 128 /**< Maximum nb. of DCB queues. */
306 /* DCB capability defines */
307 #define ETH_DCB_PG_SUPPORT 0x00000001 /**< Priority Group(ETS) support. */
308 #define ETH_DCB_PFC_SUPPORT 0x00000002 /**< Priority Flow Control support. */
311 * This enum indicates the possible number of traffic classes
312 * in DCB configratioins
314 enum rte_eth_nb_tcs {
315 ETH_4_TCS = 4, /**< 4 TCs with DCB. */
316 ETH_8_TCS = 8 /**< 8 TCs with DCB. */
320 * This enum indicates the possible number of queue pools
321 * in VMDQ+DCB configurations.
323 enum rte_eth_nb_pools {
324 ETH_16_POOLS = 16, /**< 16 pools with DCB. */
325 ETH_32_POOLS = 32 /**< 32 pools with DCB. */
328 /* This structure may be extended in future. */
329 struct rte_eth_dcb_rx_conf {
330 enum rte_eth_nb_tcs nb_tcs; /**< Possible DCB TCs, 4 or 8 TCs */
331 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
332 /**< Possible DCB queue,4 or 8. */
335 struct rte_eth_vmdq_dcb_tx_conf {
336 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools. */
337 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
338 /**< Possible DCB queue,4 or 8. */
341 struct rte_eth_dcb_tx_conf {
342 enum rte_eth_nb_tcs nb_tcs; /**< possible DCB TCs, 4 or 8 TCs. */
343 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
344 /**< Possible DCB queue,4 or 8. */
348 * A structure used to configure the VMDQ+DCB feature
349 * of an Ethernet port.
351 * Using this feature, packets are routed to a pool of queues, based
352 * on the vlan id in the vlan tag, and then to a specific queue within
353 * that pool, using the user priority vlan tag field.
355 * A default pool may be used, if desired, to route all traffic which
356 * does not match the vlan filter rules.
358 struct rte_eth_vmdq_dcb_conf {
359 enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
360 uint8_t enable_default_pool; /**< If non-zero, use a default pool */
361 uint8_t default_pool; /**< The default pool, if applicable */
362 uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
364 uint16_t vlan_id; /**< The vlan id of the received frame */
365 uint64_t pools; /**< Bitmask of pools for packet rx */
366 } pool_map[ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq vlan pool maps. */
367 uint8_t dcb_queue[ETH_DCB_NUM_USER_PRIORITIES];
368 /**< Selects a queue in a pool */
372 * A structure used to configure the TX features of an Ethernet port.
374 struct rte_eth_txmode {
375 enum rte_eth_tx_mq_mode mq_mode; /**< TX multi-queues mode. */
379 * A structure used to configure an RX ring of an Ethernet port.
381 struct rte_eth_rxconf {
382 struct rte_eth_thresh rx_thresh; /**< RX ring threshold registers. */
383 uint16_t rx_free_thresh; /**< Drives the freeing of RX descriptors. */
387 * A structure used to configure a TX ring of an Ethernet port.
389 struct rte_eth_txconf {
390 struct rte_eth_thresh tx_thresh; /**< TX ring threshold registers. */
391 uint16_t tx_rs_thresh; /**< Drives the setting of RS bit on TXDs. */
392 uint16_t tx_free_thresh; /**< Drives the freeing of TX buffers. */
396 * This enum indicates the flow control mode
398 enum rte_eth_fc_mode {
399 RTE_FC_NONE = 0, /**< Disable flow control. */
400 RTE_FC_RX_PAUSE, /**< RX pause frame, enable flowctrl on TX side. */
401 RTE_FC_TX_PAUSE, /**< TX pause frame, enable flowctrl on RX side. */
402 RTE_FC_FULL /**< Enable flow control on both side. */
406 * A structure used to configure Ethernet flow control parameter.
407 * These parameters will be configured into the register of the NIC.
408 * Please refer to the corresponding data sheet for proper value.
410 struct rte_eth_fc_conf {
411 uint32_t high_water; /**< High threshold value to trigger XOFF */
412 uint32_t low_water; /**< Low threshold value to trigger XON */
413 uint16_t pause_time; /**< Pause quota in the Pause frame */
414 uint16_t send_xon; /**< Is XON frame need be sent */
415 enum rte_eth_fc_mode mode; /**< Link flow control mode */
419 * Flow Director setting modes: none (default), signature or perfect.
422 RTE_FDIR_MODE_NONE = 0, /**< Disable FDIR support. */
423 RTE_FDIR_MODE_SIGNATURE, /**< Enable FDIR signature filter mode. */
424 RTE_FDIR_MODE_PERFECT, /**< Enable FDIR perfect filter mode. */
428 * Memory space that can be configured to store Flow Director filters
429 * in the board memory.
431 enum rte_fdir_pballoc_type {
432 RTE_FDIR_PBALLOC_64K = 0, /**< 64k. */
433 RTE_FDIR_PBALLOC_128K, /**< 128k. */
434 RTE_FDIR_PBALLOC_256K, /**< 256k. */
438 * Select report mode of FDIR hash information in RX descriptors.
440 enum rte_fdir_status_mode {
441 RTE_FDIR_NO_REPORT_STATUS = 0, /**< Never report FDIR hash. */
442 RTE_FDIR_REPORT_STATUS, /**< Only report FDIR hash for matching pkts. */
443 RTE_FDIR_REPORT_STATUS_ALWAYS, /**< Always report FDIR hash. */
447 * A structure used to configure the Flow Director (FDIR) feature
448 * of an Ethernet port.
450 * If mode is RTE_FDIR_DISABLE, the pballoc value is ignored.
452 struct rte_fdir_conf {
453 enum rte_fdir_mode mode; /**< Flow Director mode. */
454 enum rte_fdir_pballoc_type pballoc; /**< Space for FDIR filters. */
455 enum rte_fdir_status_mode status; /**< How to report FDIR hash. */
456 /* Offset of flexbytes field in RX packets (in 16-bit word units). */
457 uint8_t flexbytes_offset;
458 /* RX queue of packets matching a "drop" filter in perfect mode. */
463 * Possible l4type of FDIR filters.
466 RTE_FDIR_L4TYPE_NONE = 0, /**< None. */
467 RTE_FDIR_L4TYPE_UDP, /**< UDP. */
468 RTE_FDIR_L4TYPE_TCP, /**< TCP. */
469 RTE_FDIR_L4TYPE_SCTP, /**< SCTP. */
473 * Select IPv4 or IPv6 FDIR filters.
476 RTE_FDIR_IPTYPE_IPV4 = 0, /**< IPv4. */
477 RTE_FDIR_IPTYPE_IPV6 , /**< IPv6. */
481 * A structure used to define a FDIR packet filter.
483 struct rte_fdir_filter {
484 uint16_t flex_bytes; /**< Flex bytes value to match. */
485 uint16_t vlan_id; /**< VLAN ID value to match, 0 otherwise. */
486 uint16_t port_src; /**< Source port to match, 0 otherwise. */
487 uint16_t port_dst; /**< Destination port to match, 0 otherwise. */
489 uint32_t ipv4_addr; /**< IPv4 source address to match. */
490 uint32_t ipv6_addr[4]; /**< IPv6 source address to match. */
491 } ip_src; /**< IPv4/IPv6 source address to match (union of above). */
493 uint32_t ipv4_addr; /**< IPv4 destination address to match. */
494 uint32_t ipv6_addr[4]; /**< IPv6 destination address to match */
495 } ip_dst; /**< IPv4/IPv6 destination address to match (union of above). */
496 enum rte_l4type l4type; /**< l4type to match: NONE/UDP/TCP/SCTP. */
497 enum rte_iptype iptype; /**< IP packet type to match: IPv4 or IPv6. */
501 * A structure used to configure FDIR masks that are used by the device
502 * to match the various fields of RX packet headers.
503 * @note The only_ip_flow field has the opposite meaning compared to other
506 struct rte_fdir_masks {
507 /** When set to 1, packet l4type is \b NOT relevant in filters, and
508 source and destination port masks must be set to zero. */
509 uint8_t only_ip_flow;
510 /** If set to 1, vlan_id is relevant in filters. */
512 /** If set to 1, vlan_prio is relevant in filters. */
514 /** If set to 1, flexbytes is relevant in filters. */
516 /** Mask of Destination IPv4 Address. All bits set to 1 define the
517 relevant bits to use in the destination address of an IPv4 packet
518 when matching it against FDIR filters. */
519 uint32_t dst_ipv4_mask;
520 /** Mask of Source IPv4 Address. All bits set to 1 define
521 the relevant bits to use in the source address of an IPv4 packet
522 when matching it against FDIR filters. */
523 uint32_t src_ipv4_mask;
524 /** Mask of Source IPv6 Address. All bits set to 1 define the
525 relevant BYTES to use in the source address of an IPv6 packet
526 when matching it against FDIR filters. */
527 uint16_t src_ipv6_mask;
528 /** Mask of Source Port. All bits set to 1 define the relevant
529 bits to use in the source port of an IP packets when matching it
530 against FDIR filters. */
531 uint16_t src_port_mask;
532 /** Mask of Destination Port. All bits set to 1 define the relevant
533 bits to use in the destination port of an IP packet when matching it
534 against FDIR filters. */
535 uint16_t dst_port_mask;
539 * A structure used to report the status of the flow director filters in use.
541 struct rte_eth_fdir {
542 /** Number of filters with collision indication. */
544 /** Number of free (non programmed) filters. */
546 /** The Lookup hash value of the added filter that updated the value
547 of the MAXLEN field */
549 /** Longest linked list of filters in the table. */
551 /** Number of added filters. */
553 /** Number of removed filters. */
555 /** Number of failed added filters (no more space in device). */
557 /** Number of failed removed filters. */
562 * A structure used to enable/disable specific device interrupts.
564 struct rte_intr_conf {
565 /** enable/disable lsc interrupt. 0 (default) - disable, 1 enable */
570 * A structure used to configure an Ethernet port.
571 * Depending upon the RX multi-queue mode, extra advanced
572 * configuration settings may be needed.
574 struct rte_eth_conf {
576 /**< ETH_LINK_SPEED_10[0|00|000], or 0 for autonegotation */
577 uint16_t link_duplex;
578 /**< ETH_LINK_[HALF_DUPLEX|FULL_DUPLEX], or 0 for autonegotation */
579 struct rte_eth_rxmode rxmode; /**< Port RX configuration. */
580 struct rte_eth_txmode txmode; /**< Port TX configuration. */
582 struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
583 struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
584 /**< Port vmdq+dcb configuration. */
585 struct rte_eth_dcb_rx_conf dcb_rx_conf;
586 /**< Port dcb RX configuration. */
587 } rx_adv_conf; /**< Port RX filtering configuration (union). */
589 struct rte_eth_vmdq_dcb_tx_conf vmdq_dcb_tx_conf;
590 /**< Port vmdq+dcb TX configuration. */
591 struct rte_eth_dcb_tx_conf dcb_tx_conf;
592 /**< Port dcb TX configuration. */
593 } tx_adv_conf; /**< Port TX DCB configuration (union). */
594 /** Currently,Priority Flow Control(PFC) are supported,if DCB with PFC
595 is needed,and the variable must be set ETH_DCB_PFC_SUPPORT. */
596 uint32_t dcb_capability_en;
597 struct rte_fdir_conf fdir_conf; /**< FDIR configuration. */
598 struct rte_intr_conf intr_conf; /**< Interrupt mode configuration. */
602 * A structure used to retrieve the contextual information of
603 * an Ethernet device, such as the controlling driver of the device,
604 * its PCI context, etc...
606 struct rte_eth_dev_info {
607 struct rte_pci_device *pci_dev; /**< Device PCI information. */
608 const char *driver_name; /**< Device Driver name. */
609 uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */
610 uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */
611 uint16_t max_rx_queues; /**< Maximum number of RX queues. */
612 uint16_t max_tx_queues; /**< Maximum number of TX queues. */
613 uint32_t max_mac_addrs; /**< Maximum number of MAC addresses. */
620 struct rte_eth_dev_callback;
621 /** @internal Structure to keep track of registered callbacks */
622 TAILQ_HEAD(rte_eth_dev_cb_list, rte_eth_dev_callback);
625 * Definitions of all functions exported by an Ethernet driver through the
626 * the generic structure of type *eth_dev_ops* supplied in the *rte_eth_dev*
627 * structure associated with an Ethernet device.
630 typedef int (*eth_dev_configure_t)(struct rte_eth_dev *dev, uint16_t nb_rx_q,
632 /**< @internal Ethernet device configuration. */
634 typedef int (*eth_dev_start_t)(struct rte_eth_dev *dev);
635 /**< @internal Function used to start a configured Ethernet device. */
637 typedef void (*eth_dev_stop_t)(struct rte_eth_dev *dev);
638 /**< @internal Function used to stop a configured Ethernet device. */
640 typedef void (*eth_dev_close_t)(struct rte_eth_dev *dev);
641 /**< @internal Function used to close a configured Ethernet device. */
643 typedef void (*eth_promiscuous_enable_t)(struct rte_eth_dev *dev);
644 /**< @internal Function used to enable the RX promiscuous mode of an Ethernet device. */
646 typedef void (*eth_promiscuous_disable_t)(struct rte_eth_dev *dev);
647 /**< @internal Function used to disable the RX promiscuous mode of an Ethernet device. */
649 typedef void (*eth_allmulticast_enable_t)(struct rte_eth_dev *dev);
650 /**< @internal Enable the receipt of all multicast packets by an Ethernet device. */
652 typedef void (*eth_allmulticast_disable_t)(struct rte_eth_dev *dev);
653 /**< @internal Disable the receipt of all multicast packets by an Ethernet device. */
655 typedef int (*eth_link_update_t)(struct rte_eth_dev *dev,
656 int wait_to_complete);
657 /**< @internal Get link speed, duplex mode and state (up/down) of an Ethernet device. */
659 typedef void (*eth_stats_get_t)(struct rte_eth_dev *dev,
660 struct rte_eth_stats *igb_stats);
661 /**< @internal Get global I/O statistics of an Ethernet device. */
663 typedef void (*eth_stats_reset_t)(struct rte_eth_dev *dev);
664 /**< @internal Reset global I/O statistics of an Ethernet device to 0. */
666 typedef int (*eth_queue_stats_mapping_set_t)(struct rte_eth_dev *dev,
670 /**< @internal Set a queue statistics mapping for a tx/rx queue of an Ethernet device. */
672 typedef void (*eth_dev_infos_get_t)(struct rte_eth_dev *dev,
673 struct rte_eth_dev_info *dev_info);
674 /**< @internal Get specific informations of an Ethernet device. */
676 typedef int (*eth_rx_queue_setup_t)(struct rte_eth_dev *dev,
677 uint16_t rx_queue_id,
679 unsigned int socket_id,
680 const struct rte_eth_rxconf *rx_conf,
681 struct rte_mempool *mb_pool);
682 /**< @internal Set up a receive queue of an Ethernet device. */
684 typedef int (*eth_tx_queue_setup_t)(struct rte_eth_dev *dev,
685 uint16_t tx_queue_id,
687 unsigned int socket_id,
688 const struct rte_eth_txconf *tx_conf);
689 /**< @internal Setup a transmit queue of an Ethernet device. */
691 typedef void (*vlan_filter_set_t)(struct rte_eth_dev *dev,
694 /**< @internal filtering of a VLAN Tag Identifier by an Ethernet device. */
696 typedef uint16_t (*eth_rx_burst_t)(struct igb_rx_queue *rxq,
697 struct rte_mbuf **rx_pkts,
699 /**< @internal Retrieve input packets from a receive queue of an Ethernet device. */
701 typedef uint16_t (*eth_tx_burst_t)(struct igb_tx_queue *txq,
702 struct rte_mbuf **tx_pkts,
704 /**< @internal Send output packets on a transmit queue of an Ethernet device. */
706 typedef int (*fdir_add_signature_filter_t)(struct rte_eth_dev *dev,
707 struct rte_fdir_filter *fdir_ftr,
709 /**< @internal Setup a new signature filter rule on an Ethernet device */
711 typedef int (*fdir_update_signature_filter_t)(struct rte_eth_dev *dev,
712 struct rte_fdir_filter *fdir_ftr,
714 /**< @internal Update a signature filter rule on an Ethernet device */
716 typedef int (*fdir_remove_signature_filter_t)(struct rte_eth_dev *dev,
717 struct rte_fdir_filter *fdir_ftr);
718 /**< @internal Remove a signature filter rule on an Ethernet device */
720 typedef void (*fdir_infos_get_t)(struct rte_eth_dev *dev,
721 struct rte_eth_fdir *fdir);
722 /**< @internal Get information about fdir status */
724 typedef int (*fdir_add_perfect_filter_t)(struct rte_eth_dev *dev,
725 struct rte_fdir_filter *fdir_ftr,
726 uint16_t soft_id, uint8_t rx_queue,
728 /**< @internal Setup a new perfect filter rule on an Ethernet device */
730 typedef int (*fdir_update_perfect_filter_t)(struct rte_eth_dev *dev,
731 struct rte_fdir_filter *fdir_ftr,
732 uint16_t soft_id, uint8_t rx_queue,
734 /**< @internal Update a perfect filter rule on an Ethernet device */
736 typedef int (*fdir_remove_perfect_filter_t)(struct rte_eth_dev *dev,
737 struct rte_fdir_filter *fdir_ftr,
739 /**< @internal Remove a perfect filter rule on an Ethernet device */
741 typedef int (*fdir_set_masks_t)(struct rte_eth_dev *dev,
742 struct rte_fdir_masks *fdir_masks);
743 /**< @internal Setup flow director masks on an Ethernet device */
745 typedef int (*flow_ctrl_set_t)(struct rte_eth_dev *dev,
746 struct rte_eth_fc_conf *fc_conf);
747 /**< @internal Setup flow control parameter on an Ethernet device */
749 typedef int (*eth_dev_led_on_t)(struct rte_eth_dev *dev);
750 /**< @internal Turn on SW controllable LED on an Ethernet device */
752 typedef int (*eth_dev_led_off_t)(struct rte_eth_dev *dev);
753 /**< @internal Turn off SW controllable LED on an Ethernet device */
755 typedef void (*eth_mac_addr_remove_t)(struct rte_eth_dev *dev, uint32_t index);
756 /**< @internal Remove MAC address from receive address register */
758 typedef void (*eth_mac_addr_add_t)(struct rte_eth_dev *dev,
759 struct ether_addr *mac_addr,
762 /**< @internal Set a MAC address into Receive Address Address Register */
765 * @internal A structure containing the functions exported by an Ethernet driver.
768 eth_dev_configure_t dev_configure; /**< Configure device. */
769 eth_dev_start_t dev_start; /**< Start device. */
770 eth_dev_stop_t dev_stop; /**< Stop device. */
771 eth_dev_close_t dev_close; /**< Close device. */
772 eth_promiscuous_enable_t promiscuous_enable; /**< Promiscuous ON. */
773 eth_promiscuous_disable_t promiscuous_disable;/**< Promiscuous OFF. */
774 eth_allmulticast_enable_t allmulticast_enable;/**< RX multicast ON. */
775 eth_allmulticast_disable_t allmulticast_disable;/**< RX multicast OF. */
776 eth_link_update_t link_update; /**< Get device link state. */
777 eth_stats_get_t stats_get; /**< Get device statistics. */
778 eth_stats_reset_t stats_reset; /**< Reset device statistics. */
779 eth_queue_stats_mapping_set_t queue_stats_mapping_set;
780 /**< Configure per queue stat counter mapping. */
781 eth_dev_infos_get_t dev_infos_get; /**< Get device info. */
782 vlan_filter_set_t vlan_filter_set; /**< Filter VLAN Setup. */
783 eth_rx_queue_setup_t rx_queue_setup;/**< Set up device RX queue.*/
784 eth_tx_queue_setup_t tx_queue_setup;/**< Set up device TX queue.*/
785 eth_dev_led_on_t dev_led_on; /**< Turn on LED. */
786 eth_dev_led_off_t dev_led_off; /**< Turn off LED. */
787 flow_ctrl_set_t flow_ctrl_set; /**< Setup flow control. */
788 eth_mac_addr_remove_t mac_addr_remove; /**< Remove MAC address */
789 eth_mac_addr_add_t mac_addr_add; /**< Add a MAC address */
791 /** Add a signature filter. */
792 fdir_add_signature_filter_t fdir_add_signature_filter;
793 /** Update a signature filter. */
794 fdir_update_signature_filter_t fdir_update_signature_filter;
795 /** Remove a signature filter. */
796 fdir_remove_signature_filter_t fdir_remove_signature_filter;
797 /** Get information about FDIR status. */
798 fdir_infos_get_t fdir_infos_get;
799 /** Add a perfect filter. */
800 fdir_add_perfect_filter_t fdir_add_perfect_filter;
801 /** Update a perfect filter. */
802 fdir_update_perfect_filter_t fdir_update_perfect_filter;
803 /** Remove a perfect filter. */
804 fdir_remove_perfect_filter_t fdir_remove_perfect_filter;
805 /** Setup masks for FDIR filtering. */
806 fdir_set_masks_t fdir_set_masks;
811 * The generic data structure associated with each ethernet device.
813 * Pointers to burst-oriented packet receive and transmit functions are
814 * located at the beginning of the structure, along with the pointer to
815 * where all the data elements for the particular device are stored in shared
816 * memory. This split allows the function pointer and driver data to be per-
817 * process, while the actual configuration data for the device is shared.
820 eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
821 eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
822 struct rte_eth_dev_data *data; /**< Pointer to device data */
823 const struct eth_driver *driver;/**< Driver for this device */
824 struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
825 struct rte_pci_device *pci_dev; /**< PCI info. supplied by probing */
826 struct rte_eth_dev_cb_list callbacks; /**< User application callbacks */
831 * The data part, with no function pointers, associated with each ethernet device.
833 * This structure is safe to place in shared memory to be common among different
834 * processes in a multi-process configuration.
836 struct rte_eth_dev_data {
837 struct igb_rx_queue **rx_queues; /**< Array of pointers to RX queues. */
838 struct igb_tx_queue **tx_queues; /**< Array of pointers to TX queues. */
839 uint16_t nb_rx_queues; /**< Number of RX queues. */
840 uint16_t nb_tx_queues; /**< Number of TX queues. */
842 void *dev_private; /**< PMD-specific private data */
844 struct rte_eth_link dev_link;
845 /**< Link-level information & status */
847 struct rte_eth_conf dev_conf; /**< Configuration applied to device. */
848 uint16_t max_frame_size; /**< Default is ETHER_MAX_LEN (1518). */
850 uint64_t rx_mbuf_alloc_failed; /**< RX ring mbuf allocation failures. */
851 struct ether_addr* mac_addrs;/**< Device Ethernet Link address. */
852 uint8_t port_id; /**< Device [external] port identifier. */
853 uint8_t promiscuous : 1, /**< RX promiscuous mode ON(1) / OFF(0). */
854 scattered_rx : 1, /**< RX of scattered packets is ON(1) / OFF(0) */
855 all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
856 dev_started : 1; /**< Device state: STARTED(1) / STOPPED(0). */
861 * The pool of *rte_eth_dev* structures. The size of the pool
862 * is configured at compile-time in the <rte_ethdev.c> file.
864 extern struct rte_eth_dev rte_eth_devices[];
867 * Get the total number of Ethernet devices that have been successfully
868 * initialized by the [matching] Ethernet driver during the PCI probing phase.
869 * All devices whose port identifier is in the range
870 * [0, rte_eth_dev_count() - 1] can be operated on by network applications.
873 * - The total number of usable Ethernet devices.
875 extern uint8_t rte_eth_dev_count(void);
880 * Initialization function of an Ethernet driver invoked for each matching
881 * Ethernet PCI device detected during the PCI probing phase.
884 * The pointer to the [matching] Ethernet driver structure supplied by
885 * the PMD when it registered itself.
887 * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
888 * associated with the matching device and which have been [automatically]
889 * allocated in the *rte_eth_devices* array.
890 * The *eth_dev* structure is supplied to the driver initialization function
891 * with the following fields already initialized:
893 * - *pci_dev*: Holds the pointers to the *rte_pci_device* structure which
894 * contains the generic PCI information of the matching device.
896 * - *dev_private*: Holds a pointer to the device private data structure.
898 * - *max_frame_size*: Contains the default Ethernet maximum frame length
901 * - *port_id*: Contains the port index of the device (actually the index
902 * of the *eth_dev* structure in the *rte_eth_devices* array).
905 * - 0: Success, the device is properly initialized by the driver.
906 * In particular, the driver MUST have set up the *dev_ops* pointer
907 * of the *eth_dev* structure.
908 * - <0: Error code of the device initialization failure.
910 typedef int (*eth_dev_init_t)(struct eth_driver *eth_drv,
911 struct rte_eth_dev *eth_dev);
915 * The structure associated with a PMD Ethernet driver.
917 * Each Ethernet driver acts as a PCI driver and is represented by a generic
918 * *eth_driver* structure that holds:
920 * - An *rte_pci_driver* structure (which must be the first field).
922 * - The *eth_dev_init* function invoked for each matching PCI device.
924 * - The size of the private data to allocate for each matching device.
927 struct rte_pci_driver pci_drv; /**< The PMD is also a PCI driver. */
928 eth_dev_init_t eth_dev_init; /**< Device init function. */
929 unsigned int dev_private_size; /**< Size of device private data. */
934 * A function invoked by the initialization function of an Ethernet driver
935 * to simultaneously register itself as a PCI driver and as an Ethernet
936 * Poll Mode Driver (PMD).
939 * The pointer to the *eth_driver* structure associated with
940 * the Ethernet driver.
942 extern void rte_eth_driver_register(struct eth_driver *eth_drv);
945 * The initialization function of the driver for
946 * Intel(r) IGB Gigabit Ethernet Controller devices.
947 * This function is invoked once at EAL start time.
951 extern int rte_igb_pmd_init(void);
954 * The initialization function of the driver for
955 * Intel(r) EM Gigabit Ethernet Controller devices.
956 * This function is invoked once at EAL start time.
960 extern int rte_em_pmd_init(void);
963 * The initialization function of the driver for 1Gbps Intel IGB_VF
965 * Invoked once at EAL start time.
969 extern int rte_igbvf_pmd_init(void);
972 * The initialization function of the driver for 10Gbps Intel IXGBE
974 * Invoked once at EAL start time.
978 extern int rte_ixgbe_pmd_init(void);
981 * The initialization function of the driver for 10Gbps Intel IXGBE_VF
983 * Invoked once at EAL start time.
987 extern int rte_ixgbevf_pmd_init(void);
990 * The initialization function of *all* supported and enabled drivers.
991 * Right now, the following PMDs are supported:
997 * This function is invoked once at EAL start time.
1000 * Error code of the device initialization failure,
1001 * -ENODEV if there are no drivers available
1002 * (e.g. if all driver config options are = n).
1005 int rte_pmd_init_all(void)
1009 #ifdef RTE_LIBRTE_IGB_PMD
1010 if ((ret = rte_igb_pmd_init()) != 0) {
1011 RTE_LOG(ERR, PMD, "Cannot init igb PMD\n");
1014 if ((ret = rte_igbvf_pmd_init()) != 0) {
1015 RTE_LOG(ERR, PMD, "Cannot init igbvf PMD\n");
1018 #endif /* RTE_LIBRTE_IGB_PMD */
1020 #ifdef RTE_LIBRTE_EM_PMD
1021 if ((ret = rte_em_pmd_init()) != 0) {
1022 RTE_LOG(ERR, PMD, "Cannot init em PMD\n");
1025 #endif /* RTE_LIBRTE_EM_PMD */
1027 #ifdef RTE_LIBRTE_IXGBE_PMD
1028 if ((ret = rte_ixgbe_pmd_init()) != 0) {
1029 RTE_LOG(ERR, PMD, "Cannot init ixgbe PMD\n");
1032 if ((ret = rte_ixgbevf_pmd_init()) != 0) {
1033 RTE_LOG(ERR, PMD, "Cannot init ixgbevf PMD\n");
1036 #endif /* RTE_LIBRTE_IXGBE_PMD */
1039 RTE_LOG(ERR, PMD, "No PMD(s) are configured\n");
1044 * Configure an Ethernet device.
1045 * This function must be invoked first before any other function in the
1046 * Ethernet API. This function can also be re-invoked when a device is in the
1050 * The port identifier of the Ethernet device to configure.
1051 * @param nb_rx_queue
1052 * The number of receive queues to set up for the Ethernet device.
1053 * @param nb_tx_queue
1054 * The number of transmit queues to set up for the Ethernet device.
1056 * The pointer to the configuration data to be used for the Ethernet device.
1057 * The *rte_eth_conf* structure includes:
1058 * - the hardware offload features to activate, with dedicated fields for
1059 * each statically configurable offload hardware feature provided by
1060 * Ethernet devices, such as IP checksum or VLAN tag stripping for
1062 * - the Receive Side Scaling (RSS) configuration when using multiple RX
1065 * Embedding all configuration information in a single data structure
1066 * is the more flexible method that allows the addition of new features
1067 * without changing the syntax of the API.
1069 * - 0: Success, device configured.
1070 * - <0: Error code returned by the driver configuration function.
1072 extern int rte_eth_dev_configure(uint8_t port_id,
1073 uint16_t nb_rx_queue,
1074 uint16_t nb_tx_queue,
1075 const struct rte_eth_conf *eth_conf);
1078 * Allocate and set up a receive queue for an Ethernet device.
1080 * The function allocates a contiguous block of memory for *nb_rx_desc*
1081 * receive descriptors from a memory zone associated with *socket_id*
1082 * and initializes each receive descriptor with a network buffer allocated
1083 * from the memory pool *mb_pool*.
1086 * The port identifier of the Ethernet device.
1087 * @param rx_queue_id
1088 * The index of the receive queue to set up.
1089 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1090 * to rte_eth_dev_configure().
1092 * The number of receive descriptors to allocate for the receive ring.
1094 * The *socket_id* argument is the socket identifier in case of NUMA.
1095 * The value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1096 * the DMA memory allocated for the receive descriptors of the ring.
1098 * The pointer to the configuration data to be used for the receive queue.
1099 * The *rx_conf* structure contains an *rx_thresh* structure with the values
1100 * of the Prefetch, Host, and Write-Back threshold registers of the receive
1103 * The pointer to the memory pool from which to allocate *rte_mbuf* network
1104 * memory buffers to populate each descriptor of the receive ring.
1106 * - 0: Success, receive queue correctly set up.
1107 * - -EINVAL: The size of network buffers which can be allocated from the
1108 * memory pool does not fit the various buffer sizes allowed by the
1109 * device controller.
1110 * - -ENOMEM: Unable to allocate the receive ring descriptors or to
1111 * allocate network memory buffers from the memory pool when
1112 * initializing receive descriptors.
1114 extern int rte_eth_rx_queue_setup(uint8_t port_id, uint16_t rx_queue_id,
1115 uint16_t nb_rx_desc, unsigned int socket_id,
1116 const struct rte_eth_rxconf *rx_conf,
1117 struct rte_mempool *mb_pool);
1120 * Allocate and set up a transmit queue for an Ethernet device.
1123 * The port identifier of the Ethernet device.
1124 * @param tx_queue_id
1125 * The index of the transmit queue to set up.
1126 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1127 * to rte_eth_dev_configure().
1129 * The number of transmit descriptors to allocate for the transmit ring.
1131 * The *socket_id* argument is the socket identifier in case of NUMA.
1132 * Its value can be *SOCKET_ID_ANY* if there is no NUMA constraint for
1133 * the DMA memory allocated for the transmit descriptors of the ring.
1135 * The pointer to the configuration data to be used for the transmit queue.
1136 * The *tx_conf* structure contains the following data:
1137 * - The *tx_thresh* structure with the values of the Prefetch, Host, and
1138 * Write-Back threshold registers of the transmit ring.
1139 * When setting Write-Back threshold to the value greater then zero,
1140 * *tx_rs_thresh* value should be explicitly set to one.
1141 * - The *tx_free_thresh* value indicates the [minimum] number of network
1142 * buffers that must be pending in the transmit ring to trigger their
1143 * [implicit] freeing by the driver transmit function.
1144 * - The *tx_rs_thresh* value indicates the [minimum] number of transmit
1145 * descriptors that must be pending in the transmit ring before setting the
1146 * RS bit on a descriptor by the driver transmit function.
1147 * The *tx_rs_thresh* value should be less or equal then
1148 * *tx_free_thresh* value, and both of them should be less then
1151 * Note that setting *tx_free_thresh* or *tx_rs_thresh* value to 0 forces
1152 * the transmit function to use default values.
1154 * - 0: Success, the transmit queue is correctly set up.
1155 * - -ENOMEM: Unable to allocate the transmit ring descriptors.
1157 extern int rte_eth_tx_queue_setup(uint8_t port_id, uint16_t tx_queue_id,
1158 uint16_t nb_tx_desc, unsigned int socket_id,
1159 const struct rte_eth_txconf *tx_conf);
1162 * Start an Ethernet device.
1164 * The device start step is the last one and consists of setting the configured
1165 * offload features and in starting the transmit and the receive units of the
1167 * On success, all basic functions exported by the Ethernet API (link status,
1168 * receive/transmit, and so on) can be invoked.
1171 * The port identifier of the Ethernet device.
1173 * - 0: Success, Ethernet device started.
1174 * - <0: Error code of the driver device start function.
1176 extern int rte_eth_dev_start(uint8_t port_id);
1179 * Stop an Ethernet device. The device can be restarted with a call to
1180 * rte_eth_dev_start()
1183 * The port identifier of the Ethernet device.
1185 extern void rte_eth_dev_stop(uint8_t port_id);
1188 * Close an Ethernet device. The device cannot be restarted!
1191 * The port identifier of the Ethernet device.
1193 extern void rte_eth_dev_close(uint8_t port_id);
1196 * Enable receipt in promiscuous mode for an Ethernet device.
1199 * The port identifier of the Ethernet device.
1201 extern void rte_eth_promiscuous_enable(uint8_t port_id);
1204 * Disable receipt in promiscuous mode for an Ethernet device.
1207 * The port identifier of the Ethernet device.
1209 extern void rte_eth_promiscuous_disable(uint8_t port_id);
1212 * Return the value of promiscuous mode for an Ethernet device.
1215 * The port identifier of the Ethernet device.
1217 * - (1) if promiscuous is enabled
1218 * - (0) if promiscuous is disabled.
1221 extern int rte_eth_promiscuous_get(uint8_t port_id);
1224 * Enable the receipt of any multicast frame by an Ethernet device.
1227 * The port identifier of the Ethernet device.
1229 extern void rte_eth_allmulticast_enable(uint8_t port_id);
1232 * Disable the receipt of all multicast frames by an Ethernet device.
1235 * The port identifier of the Ethernet device.
1237 extern void rte_eth_allmulticast_disable(uint8_t port_id);
1240 * Return the value of allmulticast mode for an Ethernet device.
1243 * The port identifier of the Ethernet device.
1245 * - (1) if allmulticast is enabled
1246 * - (0) if allmulticast is disabled.
1249 extern int rte_eth_allmulticast_get(uint8_t port_id);
1252 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1253 * or FULL-DUPLEX) of the physical link of an Ethernet device. It might need
1254 * to wait up to 9 seconds in it.
1257 * The port identifier of the Ethernet device.
1259 * A pointer to an *rte_eth_link* structure to be filled with
1260 * the status, the speed and the mode of the Ethernet device link.
1262 extern void rte_eth_link_get(uint8_t port_id, struct rte_eth_link *link);
1265 * Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX
1266 * or FULL-DUPLEX) of the physical link of an Ethernet device. It is a no-wait
1267 * version of rte_eth_link_get().
1270 * The port identifier of the Ethernet device.
1272 * A pointer to an *rte_eth_link* structure to be filled with
1273 * the status, the speed and the mode of the Ethernet device link.
1275 extern void rte_eth_link_get_nowait(uint8_t port_id,
1276 struct rte_eth_link *link);
1279 * Retrieve the general I/O statistics of an Ethernet device.
1282 * The port identifier of the Ethernet device.
1284 * A pointer to a structure of type *rte_eth_stats* to be filled with
1285 * the values of device counters for the following set of statistics:
1286 * - *ipackets* with the total of successfully received packets.
1287 * - *opackets* with the total of successfully transmitted packets.
1288 * - *ibytes* with the total of successfully received bytes.
1289 * - *obytes* with the total of successfully transmitted bytes.
1290 * - *ierrors* with the total of erroneous received packets.
1291 * - *oerrors* with the total of failed transmitted packets.
1293 extern void rte_eth_stats_get(uint8_t port_id, struct rte_eth_stats *stats);
1296 * Reset the general I/O statistics of an Ethernet device.
1299 * The port identifier of the Ethernet device.
1301 extern void rte_eth_stats_reset(uint8_t port_id);
1304 * Set a mapping for the specified transmit queue to the specified per-queue
1305 * statistics counter.
1308 * The port identifier of the Ethernet device.
1309 * @param tx_queue_id
1310 * The index of the transmit queue for which a queue stats mapping is required.
1311 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1312 * to rte_eth_dev_configure().
1314 * The per-queue packet statistics functionality number that the transmit
1315 * queue is to be assigned.
1316 * The value must be in the range [0, RTE_MAX_ETHPORT_QUEUE_STATS_MAPS - 1].
1318 * Zero if successful. Non-zero otherwise.
1320 extern int rte_eth_dev_set_tx_queue_stats_mapping(uint8_t port_id,
1321 uint16_t tx_queue_id,
1325 * Set a mapping for the specified receive queue to the specified per-queue
1326 * statistics counter.
1329 * The port identifier of the Ethernet device.
1330 * @param rx_queue_id
1331 * The index of the receive queue for which a queue stats mapping is required.
1332 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1333 * to rte_eth_dev_configure().
1335 * The per-queue packet statistics functionality number that the receive
1336 * queue is to be assigned.
1337 * The value must be in the range [0, RTE_MAX_ETHPORT_QUEUE_STATS_MAPS - 1].
1339 * Zero if successful. Non-zero otherwise.
1341 extern int rte_eth_dev_set_rx_queue_stats_mapping(uint8_t port_id,
1342 uint16_t rx_queue_id,
1346 * Retrieve the Ethernet address of an Ethernet device.
1349 * The port identifier of the Ethernet device.
1351 * A pointer to a structure of type *ether_addr* to be filled with
1352 * the Ethernet address of the Ethernet device.
1354 extern void rte_eth_macaddr_get(uint8_t port_id, struct ether_addr *mac_addr);
1357 * Retrieve the contextual information of an Ethernet device.
1360 * The port identifier of the Ethernet device.
1362 * A pointer to a structure of type *rte_eth_dev_info* to be filled with
1363 * the contextual information of the Ethernet device.
1365 extern void rte_eth_dev_info_get(uint8_t port_id,
1366 struct rte_eth_dev_info *dev_info);
1369 * Enable/Disable hardware filtering by an Ethernet device of received
1370 * VLAN packets tagged with a given VLAN Tag Identifier.
1373 * The port identifier of the Ethernet device.
1375 * The VLAN Tag Identifier whose filtering must be enabled or disabled.
1377 * If > 0, enable VLAN filtering of VLAN packets tagged with *vlan_id*.
1378 * Otherwise, disable VLAN filtering of VLAN packets tagged with *vlan_id*.
1380 * - (0) if successful.
1381 * - (-ENOSUP) if hardware-assisted VLAN filtering not configured.
1382 * - (-ENODEV) if *port_id* invalid.
1383 * - (-ENOSYS) if VLAN filtering on *port_id* disabled.
1384 * - (-EINVAL) if *vlan_id* > 4095.
1386 extern int rte_eth_dev_vlan_filter(uint8_t port_id, uint16_t vlan_id, int on);
1390 * Retrieve a burst of input packets from a receive queue of an Ethernet
1391 * device. The retrieved packets are stored in *rte_mbuf* structures whose
1392 * pointers are supplied in the *rx_pkts* array.
1394 * The rte_eth_rx_burst() function loops, parsing the RX ring of the
1395 * receive queue, up to *nb_pkts* packets, and for each completed RX
1396 * descriptor in the ring, it performs the following operations:
1398 * - Initialize the *rte_mbuf* data structure associated with the
1399 * RX descriptor according to the information provided by the NIC into
1400 * that RX descriptor.
1402 * - Store the *rte_mbuf* data structure into the next entry of the
1405 * - Replenish the RX descriptor with a new *rte_mbuf* buffer
1406 * allocated from the memory pool associated with the receive queue at
1407 * initialization time.
1409 * When retrieving an input packet that was scattered by the controller
1410 * into multiple receive descriptors, the rte_eth_rx_burst() function
1411 * appends the associated *rte_mbuf* buffers to the first buffer of the
1414 * The rte_eth_rx_burst() function returns the number of packets
1415 * actually retrieved, which is the number of *rte_mbuf* data structures
1416 * effectively supplied into the *rx_pkts* array.
1417 * A return value equal to *nb_pkts* indicates that the RX queue contained
1418 * at least *rx_pkts* packets, and this is likely to signify that other
1419 * received packets remain in the input queue. Applications implementing
1420 * a "retrieve as much received packets as possible" policy can check this
1421 * specific case and keep invoking the rte_eth_rx_burst() function until
1422 * a value less than *nb_pkts* is returned.
1424 * This receive method has the following advantages:
1426 * - It allows a run-to-completion network stack engine to retrieve and
1427 * to immediately process received packets in a fast burst-oriented
1428 * approach, avoiding the overhead of unnecessary intermediate packet
1429 * queue/dequeue operations.
1431 * - Conversely, it also allows an asynchronous-oriented processing
1432 * method to retrieve bursts of received packets and to immediately
1433 * queue them for further parallel processing by another logical core,
1434 * for instance. However, instead of having received packets being
1435 * individually queued by the driver, this approach allows the invoker
1436 * of the rte_eth_rx_burst() function to queue a burst of retrieved
1437 * packets at a time and therefore dramatically reduce the cost of
1438 * enqueue/dequeue operations per packet.
1440 * - It allows the rte_eth_rx_burst() function of the driver to take
1441 * advantage of burst-oriented hardware features (CPU cache,
1442 * prefetch instructions, and so on) to minimize the number of CPU
1443 * cycles per packet.
1445 * To summarize, the proposed receive API enables many
1446 * burst-oriented optimizations in both synchronous and asynchronous
1447 * packet processing environments with no overhead in both cases.
1449 * The rte_eth_rx_burst() function does not provide any error
1450 * notification to avoid the corresponding overhead. As a hint, the
1451 * upper-level application might check the status of the device link once
1452 * being systematically returned a 0 value for a given number of tries.
1455 * The port identifier of the Ethernet device.
1457 * The index of the receive queue from which to retrieve input packets.
1458 * The value must be in the range [0, nb_rx_queue - 1] previously supplied
1459 * to rte_eth_dev_configure().
1461 * The address of an array of pointers to *rte_mbuf* structures that
1462 * must be large enough to store *nb_pkts* pointers in it.
1464 * The maximum number of packets to retrieve.
1466 * The number of packets actually retrieved, which is the number
1467 * of pointers to *rte_mbuf* structures effectively supplied to the
1470 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1471 extern uint16_t rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1472 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
1474 static inline uint16_t
1475 rte_eth_rx_burst(uint8_t port_id, uint16_t queue_id,
1476 struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
1478 struct rte_eth_dev *dev;
1480 dev = &rte_eth_devices[port_id];
1481 return (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id], rx_pkts, nb_pkts);
1486 * Send a burst of output packets on a transmit queue of an Ethernet device.
1488 * The rte_eth_tx_burst() function is invoked to transmit output packets
1489 * on the output queue *queue_id* of the Ethernet device designated by its
1491 * The *nb_pkts* parameter is the number of packets to send which are
1492 * supplied in the *tx_pkts* array of *rte_mbuf* structures.
1493 * The rte_eth_tx_burst() function loops, sending *nb_pkts* packets,
1494 * up to the number of transmit descriptors available in the TX ring of the
1496 * For each packet to send, the rte_eth_tx_burst() function performs
1497 * the following operations:
1499 * - Pick up the next available descriptor in the transmit ring.
1501 * - Free the network buffer previously sent with that descriptor, if any.
1503 * - Initialize the transmit descriptor with the information provided
1504 * in the *rte_mbuf data structure.
1506 * In the case of a segmented packet composed of a list of *rte_mbuf* buffers,
1507 * the rte_eth_tx_burst() function uses several transmit descriptors
1510 * The rte_eth_tx_burst() function returns the number of packets it
1511 * actually sent. A return value equal to *nb_pkts* means that all packets
1512 * have been sent, and this is likely to signify that other output packets
1513 * could be immediately transmitted again. Applications that implement a
1514 * "send as many packets to transmit as possible" policy can check this
1515 * specific case and keep invoking the rte_eth_tx_burst() function until
1516 * a value less than *nb_pkts* is returned.
1518 * It is the responsibility of the rte_eth_tx_burst() function to
1519 * transparently free the memory buffers of packets previously sent.
1520 * This feature is driven by the *tx_free_thresh* value supplied to the
1521 * rte_eth_dev_configure() function at device configuration time.
1522 * When the number of previously sent packets reached the "minimum transmit
1523 * packets to free" threshold, the rte_eth_tx_burst() function must
1524 * [attempt to] free the *rte_mbuf* buffers of those packets whose
1525 * transmission was effectively completed.
1528 * The port identifier of the Ethernet device.
1530 * The index of the transmit queue through which output packets must be
1532 * The value must be in the range [0, nb_tx_queue - 1] previously supplied
1533 * to rte_eth_dev_configure().
1535 * The address of an array of *nb_pkts* pointers to *rte_mbuf* structures
1536 * which contain the output packets.
1538 * The maximum number of packets to transmit.
1540 * The number of output packets actually stored in transmit descriptors of
1541 * the transmit ring. The return value can be less than the value of the
1542 * *tx_pkts* parameter when the transmit ring is full or has been filled up.
1544 #ifdef RTE_LIBRTE_ETHDEV_DEBUG
1545 extern uint16_t rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1546 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
1548 static inline uint16_t
1549 rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
1550 struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1552 struct rte_eth_dev *dev;
1554 dev = &rte_eth_devices[port_id];
1555 return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id], tx_pkts, nb_pkts);
1560 * Setup a new signature filter rule on an Ethernet device
1563 * The port identifier of the Ethernet device.
1564 * @param fdir_filter
1565 * The pointer to the fdir filter structure describing the signature filter
1567 * The *rte_fdir_filter* structure includes the values of the different fields
1568 * to match: source and destination IP addresses, vlan id, flexbytes, source
1569 * and destination ports, and so on.
1571 * The index of the RX queue where to store RX packets matching the added
1572 * signature filter defined in fdir_filter.
1574 * - (0) if successful.
1575 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1576 * - (-ENODEV) if *port_id* invalid.
1577 * - (-ENOSYS) if the FDIR mode is not configured in signature mode
1579 * - (-EINVAL) if the fdir_filter information is not correct.
1581 int rte_eth_dev_fdir_add_signature_filter(uint8_t port_id,
1582 struct rte_fdir_filter *fdir_filter,
1586 * Update a signature filter rule on an Ethernet device.
1587 * If the rule doesn't exits, it is created.
1590 * The port identifier of the Ethernet device.
1592 * The pointer to the structure describing the signature filter rule.
1593 * The *rte_fdir_filter* structure includes the values of the different fields
1594 * to match: source and destination IP addresses, vlan id, flexbytes, source
1595 * and destination ports, and so on.
1597 * The index of the RX queue where to store RX packets matching the added
1598 * signature filter defined in fdir_ftr.
1600 * - (0) if successful.
1601 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1602 * - (-ENODEV) if *port_id* invalid.
1603 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1605 * - (-EINVAL) if the fdir_filter information is not correct.
1607 int rte_eth_dev_fdir_update_signature_filter(uint8_t port_id,
1608 struct rte_fdir_filter *fdir_ftr,
1612 * Remove a signature filter rule on an Ethernet device.
1615 * The port identifier of the Ethernet device.
1617 * The pointer to the structure describing the signature filter rule.
1618 * The *rte_fdir_filter* structure includes the values of the different fields
1619 * to match: source and destination IP addresses, vlan id, flexbytes, source
1620 * and destination ports, and so on.
1622 * - (0) if successful.
1623 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1624 * - (-ENODEV) if *port_id* invalid.
1625 * - (-ENOSYS) if the flow director mode is not configured in signature mode
1627 * - (-EINVAL) if the fdir_filter information is not correct.
1629 int rte_eth_dev_fdir_remove_signature_filter(uint8_t port_id,
1630 struct rte_fdir_filter *fdir_ftr);
1633 * Retrieve the flow director information of an Ethernet device.
1636 * The port identifier of the Ethernet device.
1638 * A pointer to a structure of type *rte_eth_dev_fdir* to be filled with
1639 * the flow director information of the Ethernet device.
1641 * - (0) if successful.
1642 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1643 * - (-ENODEV) if *port_id* invalid.
1644 * - (-ENOSYS) if the flow director mode is not configured on *port_id*.
1646 int rte_eth_dev_fdir_get_infos(uint8_t port_id, struct rte_eth_fdir *fdir);
1649 * Add a new perfect filter rule on an Ethernet device.
1652 * The port identifier of the Ethernet device.
1653 * @param fdir_filter
1654 * The pointer to the structure describing the perfect filter rule.
1655 * The *rte_fdir_filter* structure includes the values of the different fields
1656 * to match: source and destination IP addresses, vlan id, flexbytes, source
1657 * and destination ports, and so on.
1658 * IPv6 are not supported.
1660 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1661 * packets matching the perfect filter.
1663 * The index of the RX queue where to store RX packets matching the added
1664 * perfect filter defined in fdir_filter.
1666 * If drop is set to 1, matching RX packets are stored into the RX drop
1667 * queue defined in the rte_fdir_conf.
1669 * - (0) if successful.
1670 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1671 * - (-ENODEV) if *port_id* invalid.
1672 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1674 * - (-EINVAL) if the fdir_filter information is not correct.
1676 int rte_eth_dev_fdir_add_perfect_filter(uint8_t port_id,
1677 struct rte_fdir_filter *fdir_filter,
1678 uint16_t soft_id, uint8_t rx_queue,
1682 * Update a perfect filter rule on an Ethernet device.
1683 * If the rule doesn't exits, it is created.
1686 * The port identifier of the Ethernet device.
1687 * @param fdir_filter
1688 * The pointer to the structure describing the perfect filter rule.
1689 * The *rte_fdir_filter* structure includes the values of the different fields
1690 * to match: source and destination IP addresses, vlan id, flexbytes, source
1691 * and destination ports, and so on.
1692 * IPv6 are not supported.
1694 * The 16-bit value supplied in the field hash.fdir.id of mbuf for RX
1695 * packets matching the perfect filter.
1697 * The index of the RX queue where to store RX packets matching the added
1698 * perfect filter defined in fdir_filter.
1700 * If drop is set to 1, matching RX packets are stored into the RX drop
1701 * queue defined in the rte_fdir_conf.
1703 * - (0) if successful.
1704 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1705 * - (-ENODEV) if *port_id* invalid.
1706 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1708 * - (-EINVAL) if the fdir_filter information is not correct.
1710 int rte_eth_dev_fdir_update_perfect_filter(uint8_t port_id,
1711 struct rte_fdir_filter *fdir_filter,
1712 uint16_t soft_id, uint8_t rx_queue,
1716 * Remove a perfect filter rule on an Ethernet device.
1719 * The port identifier of the Ethernet device.
1720 * @param fdir_filter
1721 * The pointer to the structure describing the perfect filter rule.
1722 * The *rte_fdir_filter* structure includes the values of the different fields
1723 * to match: source and destination IP addresses, vlan id, flexbytes, source
1724 * and destination ports, and so on.
1725 * IPv6 are not supported.
1727 * The soft_id value provided when adding/updating the removed filter.
1729 * - (0) if successful.
1730 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1731 * - (-ENODEV) if *port_id* invalid.
1732 * - (-ENOSYS) if the flow director mode is not configured in perfect mode
1734 * - (-EINVAL) if the fdir_filter information is not correct.
1736 int rte_eth_dev_fdir_remove_perfect_filter(uint8_t port_id,
1737 struct rte_fdir_filter *fdir_filter,
1740 * Configure globally the masks for flow director mode for an Ethernet device.
1741 * For example, the device can match packets with only the first 24 bits of
1742 * the IPv4 source address.
1744 * The following fields can be masked: IPv4 addresses and L4 port numbers.
1745 * The following fields can be either enabled or disabled completely for the
1746 * matching functionality: VLAN ID tag; VLAN Priority + CFI bit; Flexible 2-byte
1748 * IPv6 masks are not supported.
1750 * All filters must comply with the masks previously configured.
1751 * For example, with a mask equal to 255.255.255.0 for the source IPv4 address,
1752 * all IPv4 filters must be created with a source IPv4 address that fits the
1755 * This function flushes all filters that have been previously added in
1759 * The port identifier of the Ethernet device.
1761 * The pointer to the fdir mask structure describing relevant headers fields
1762 * and relevant bits to use when matching packets addresses and ports.
1763 * IPv6 masks are not supported.
1765 * - (0) if successful.
1766 * - (-ENOTSUP) if hardware doesn't support flow director mode.
1767 * - (-ENODEV) if *port_id* invalid.
1768 * - (-ENOSYS) if the flow director mode is not configured in perfect
1769 * mode on *port_id*.
1770 * - (-EINVAL) if the fdir_filter information is not correct
1772 int rte_eth_dev_fdir_set_masks(uint8_t port_id,
1773 struct rte_fdir_masks *fdir_mask);
1776 * The eth device event type for interrupt, and maybe others in the future.
1778 enum rte_eth_event_type {
1779 RTE_ETH_EVENT_UNKNOWN, /**< unknown event type */
1780 RTE_ETH_EVENT_INTR_LSC, /**< lsc interrupt event */
1781 RTE_ETH_EVENT_MAX /**< max value of this enum */
1784 typedef void (*rte_eth_dev_cb_fn)(uint8_t port_id, \
1785 enum rte_eth_event_type event, void *cb_arg);
1786 /**< user application callback to be registered for interrupts */
1791 * Register a callback function for specific port id.
1798 * User supplied callback function to be called.
1800 * Pointer to the parameters for the registered callback.
1803 * - On success, zero.
1804 * - On failure, a negative value.
1806 int rte_eth_dev_callback_register(uint8_t port_id,
1807 enum rte_eth_event_type event,
1808 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1811 * Unregister a callback function for specific port id.
1818 * User supplied callback function to be called.
1820 * Pointer to the parameters for the registered callback. -1 means to
1821 * remove all for the same callback address and same event.
1824 * - On success, zero.
1825 * - On failure, a negative value.
1827 int rte_eth_dev_callback_unregister(uint8_t port_id,
1828 enum rte_eth_event_type event,
1829 rte_eth_dev_cb_fn cb_fn, void *cb_arg);
1832 * @internal Executes all the user application registered callbacks for
1833 * the specific device. It is for DPDK internal user only. User
1834 * application should not call it directly.
1837 * Pointer to struct rte_eth_dev.
1839 * Eth device interrupt event type.
1844 void _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
1845 enum rte_eth_event_type event);
1848 * Turn on the LED on the Ethernet device.
1849 * This function turns on the LED on the Ethernet device.
1852 * The port identifier of the Ethernet device.
1854 * - (0) if successful.
1855 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1857 * - (-ENODEV) if *port_id* invalid.
1859 int rte_eth_led_on(uint8_t port_id);
1862 * Turn off the LED on the Ethernet device.
1863 * This function turns off the LED on the Ethernet device.
1866 * The port identifier of the Ethernet device.
1868 * - (0) if successful.
1869 * - (-ENOTSUP) if underlying hardware OR driver doesn't support
1871 * - (-ENODEV) if *port_id* invalid.
1873 int rte_eth_led_off(uint8_t port_id);
1876 * Configure the Ethernet link flow control for Ethernet device
1879 * The port identifier of the Ethernet device.
1881 * The pointer to the structure of the flow control parameters.
1883 * - (0) if successful.
1884 * - (-ENOTSUP) if hardware doesn't support flow control mode.
1885 * - (-ENODEV) if *port_id* invalid.
1886 * - (-EINVAL) if bad parameter
1887 * - (-EIO) if flow control setup failure
1889 int rte_eth_dev_flow_ctrl_set(uint8_t port_id,
1890 struct rte_eth_fc_conf *fc_conf);
1893 * Add a MAC address to an internal array of addresses used to enable whitelist
1894 * filtering to accept packets only if the destination MAC address matches.
1897 * The port identifier of the Ethernet device.
1899 * The MAC address to add.
1901 * VMDq pool index to associate address with (if VMDq is enabled). If VMDq is
1902 * not enabled, this should be set to 0.
1904 * - (0) if successfully added or *mac_addr" was already added.
1905 * - (-ENOTSUP) if hardware doesn't support this feature.
1906 * - (-ENODEV) if *port* is invalid.
1907 * - (-ENOSPC) if no more MAC addresses can be added.
1908 * - (-EINVAL) if MAC address is invalid.
1910 int rte_eth_dev_mac_addr_add(uint8_t port, struct ether_addr *mac_addr,
1914 * Remove a MAC address from the internal array of addresses.
1917 * The port identifier of the Ethernet device.
1919 * MAC address to remove.
1921 * - (0) if successful, or *mac_addr* didn't exist.
1922 * - (-ENOTSUP) if hardware doesn't support.
1923 * - (-ENODEV) if *port* invalid.
1924 * - (-EADDRINUSE) if attempting to remove the default MAC address
1926 int rte_eth_dev_mac_addr_remove(uint8_t port, struct ether_addr *mac_addr);
1933 #endif /* _RTE_ETHDEV_H_ */