DPDK: Data Plane Development Kit

18.02.0-rc0
rte_ethdev.h File Reference
#include <stdint.h>
#include <rte_log.h>
#include <rte_interrupts.h>
#include <rte_dev.h>
#include <rte_devargs.h>
#include <rte_errno.h>
#include <rte_common.h>
#include "rte_ether.h"
#include "rte_eth_ctrl.h"
#include "rte_dev_info.h"

Go to the source code of this file.

Data Structures

struct  rte_eth_stats
struct  rte_eth_link
struct  rte_eth_thresh
struct  rte_eth_rxmode
struct  rte_vlan_filter_conf
struct  rte_eth_rss_conf
struct  rte_eth_vlan_mirror
struct  rte_eth_mirror_conf
struct  rte_eth_rss_reta_entry64
struct  rte_eth_vmdq_dcb_conf
struct  rte_eth_vmdq_rx_conf
struct  rte_eth_txmode
struct  rte_eth_rxconf
struct  rte_eth_txconf
struct  rte_eth_desc_lim
struct  rte_eth_fc_conf
struct  rte_eth_pfc_conf
struct  rte_fdir_conf
struct  rte_eth_udp_tunnel
struct  rte_intr_conf
struct  rte_eth_conf
struct  rte_eth_dev_info
struct  rte_eth_rxq_info
struct  rte_eth_txq_info
struct  rte_eth_xstat
struct  rte_eth_xstat_name
struct  rte_eth_dcb_tc_queue_mapping
struct  rte_eth_dcb_info
struct  rte_eth_dev_tx_buffer

Macros

#define ETH_LINK_SPEED_AUTONEG   (0 << 0)
#define ETH_LINK_SPEED_FIXED   (1 << 0)
#define ETH_LINK_SPEED_10M_HD   (1 << 1)
#define ETH_LINK_SPEED_10M   (1 << 2)
#define ETH_LINK_SPEED_100M_HD   (1 << 3)
#define ETH_LINK_SPEED_100M   (1 << 4)
#define ETH_LINK_SPEED_1G   (1 << 5)
#define ETH_LINK_SPEED_2_5G   (1 << 6)
#define ETH_LINK_SPEED_5G   (1 << 7)
#define ETH_LINK_SPEED_10G   (1 << 8)
#define ETH_LINK_SPEED_20G   (1 << 9)
#define ETH_LINK_SPEED_25G   (1 << 10)
#define ETH_LINK_SPEED_40G   (1 << 11)
#define ETH_LINK_SPEED_50G   (1 << 12)
#define ETH_LINK_SPEED_56G   (1 << 13)
#define ETH_LINK_SPEED_100G   (1 << 14)
#define ETH_SPEED_NUM_NONE   0
#define ETH_SPEED_NUM_10M   10
#define ETH_SPEED_NUM_100M   100
#define ETH_SPEED_NUM_1G   1000
#define ETH_SPEED_NUM_2_5G   2500
#define ETH_SPEED_NUM_5G   5000
#define ETH_SPEED_NUM_10G   10000
#define ETH_SPEED_NUM_20G   20000
#define ETH_SPEED_NUM_25G   25000
#define ETH_SPEED_NUM_40G   40000
#define ETH_SPEED_NUM_50G   50000
#define ETH_SPEED_NUM_56G   56000
#define ETH_SPEED_NUM_100G   100000
#define ETH_LINK_HALF_DUPLEX   0
#define ETH_LINK_FULL_DUPLEX   1
#define ETH_LINK_DOWN   0
#define ETH_LINK_UP   1
#define ETH_LINK_FIXED   0
#define ETH_LINK_AUTONEG   1
#define ETH_MQ_RX_RSS_FLAG   0x1
#define ETH_RSS   ETH_MQ_RX_RSS
#define ETH_DCB_NONE   ETH_MQ_TX_NONE
#define ETH_RSS_TUNNEL
#define ETH_VMDQ_MAX_VLAN_FILTERS   64
#define ETH_DCB_NUM_USER_PRIORITIES   8
#define ETH_VMDQ_DCB_NUM_QUEUES   128
#define ETH_DCB_NUM_QUEUES   128
#define ETH_DCB_PG_SUPPORT   0x00000001
#define ETH_DCB_PFC_SUPPORT   0x00000002
#define ETH_VLAN_STRIP_OFFLOAD   0x0001
#define ETH_VLAN_FILTER_OFFLOAD   0x0002
#define ETH_VLAN_EXTEND_OFFLOAD   0x0004
#define ETH_VLAN_STRIP_MASK   0x0001
#define ETH_VLAN_FILTER_MASK   0x0002
#define ETH_VLAN_EXTEND_MASK   0x0004
#define ETH_VLAN_ID_MAX   0x0FFF
#define ETH_NUM_RECEIVE_MAC_ADDR   128
#define ETH_VMDQ_NUM_UC_HASH_ARRAY   128
#define ETH_VMDQ_ACCEPT_UNTAG   0x0001
#define ETH_VMDQ_ACCEPT_HASH_MC   0x0002
#define ETH_VMDQ_ACCEPT_HASH_UC   0x0004
#define ETH_VMDQ_ACCEPT_BROADCAST   0x0008
#define ETH_VMDQ_ACCEPT_MULTICAST   0x0010
#define ETH_MIRROR_MAX_VLANS   64
#define ETH_MIRROR_VIRTUAL_POOL_UP   0x01
#define ETH_MIRROR_UPLINK_PORT   0x02
#define ETH_MIRROR_DOWNLINK_PORT   0x04
#define ETH_MIRROR_VLAN   0x08
#define ETH_MIRROR_VIRTUAL_POOL_DOWN   0x10
#define ETH_TXQ_FLAGS_NOMULTSEGS   0x0001
#define ETH_TXQ_FLAGS_NOREFCOUNT   0x0002
#define ETH_TXQ_FLAGS_NOMULTMEMP   0x0004
#define ETH_TXQ_FLAGS_NOVLANOFFL   0x0100
#define ETH_TXQ_FLAGS_NOXSUMSCTP   0x0200
#define ETH_TXQ_FLAGS_NOXSUMUDP   0x0400
#define ETH_TXQ_FLAGS_NOXSUMTCP   0x0800
#define ETH_TXQ_FLAGS_IGNORE   0x8000
#define DEV_RX_OFFLOAD_VLAN_STRIP   0x00000001
#define DEV_TX_OFFLOAD_VLAN_INSERT   0x00000001
#define DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM   0x00000080
#define DEV_TX_OFFLOAD_VXLAN_TNL_TSO   0x00000200
#define DEV_TX_OFFLOAD_GRE_TNL_TSO   0x00000400
#define DEV_TX_OFFLOAD_IPIP_TNL_TSO   0x00000800
#define DEV_TX_OFFLOAD_GENEVE_TNL_TSO   0x00001000
#define DEV_TX_OFFLOAD_MT_LOCKFREE   0x00004000
#define DEV_TX_OFFLOAD_MULTI_SEGS   0x00008000
#define DEV_TX_OFFLOAD_MBUF_FAST_FREE   0x00010000
#define RTE_ETH_XSTATS_NAME_SIZE   64
#define RTE_ETH_QUEUE_STATE_STOPPED   0
#define ETH_L2_TUNNEL_ENABLE_MASK   0x00000001
#define ETH_L2_TUNNEL_INSERTION_MASK   0x00000002
#define ETH_L2_TUNNEL_STRIPPING_MASK   0x00000004
#define RTE_ETH_DEV_INTR_LSC   0x0002
#define RTE_ETH_DEV_BONDED_SLAVE   0x0004
#define RTE_ETH_DEV_INTR_RMV   0x0008
#define RTE_ETH_FOREACH_DEV(p)
#define RTE_ETH_RX_DESC_AVAIL   0
#define RTE_ETH_RX_DESC_DONE   1
#define RTE_ETH_RX_DESC_UNAVAIL   2
#define RTE_ETH_TX_DESC_FULL   0
#define RTE_ETH_TX_DESC_DONE   1
#define RTE_ETH_TX_DESC_UNAVAIL   2
#define RTE_ETH_TX_BUFFER_SIZE(sz)   (sizeof(struct rte_eth_dev_tx_buffer) + (sz) * sizeof(struct rte_mbuf *))

Typedefs

typedef void(* eth_promiscuous_enable_t )(struct rte_eth_dev *dev)
typedef uint16_t(* rte_rx_callback_fn )(uint16_t port, uint16_t queue, struct rte_mbuf *pkts[], uint16_t nb_pkts, uint16_t max_pkts, void *user_param)
typedef uint16_t(* rte_tx_callback_fn )(uint16_t port, uint16_t queue, struct rte_mbuf *pkts[], uint16_t nb_pkts, void *user_param)
typedef int(* rte_eth_dev_cb_fn )(uint16_t port_id, enum rte_eth_event_type event, void *cb_arg, void *ret_param)

Enumerations

enum  rte_eth_rx_mq_mode {
  ETH_MQ_RX_NONE = 0, ETH_MQ_RX_RSS = ETH_MQ_RX_RSS_FLAG, ETH_MQ_RX_DCB = ETH_MQ_RX_DCB_FLAG, ETH_MQ_RX_DCB_RSS = ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_DCB_FLAG,
  ETH_MQ_RX_VMDQ_ONLY = ETH_MQ_RX_VMDQ_FLAG, ETH_MQ_RX_VMDQ_RSS = ETH_MQ_RX_RSS_FLAG | ETH_MQ_RX_VMDQ_FLAG, ETH_MQ_RX_VMDQ_DCB = ETH_MQ_RX_VMDQ_FLAG | ETH_MQ_RX_DCB_FLAG, ETH_MQ_RX_VMDQ_DCB_RSS
}
enum  rte_eth_tx_mq_mode { ETH_MQ_TX_NONE = 0, ETH_MQ_TX_DCB, ETH_MQ_TX_VMDQ_DCB, ETH_MQ_TX_VMDQ_ONLY }
enum  rte_vlan_type { , ETH_VLAN_TYPE_INNER, ETH_VLAN_TYPE_OUTER }
enum  rte_eth_nb_tcs { ETH_4_TCS = 4, ETH_8_TCS = 8 }
enum  rte_eth_nb_pools { ETH_8_POOLS = 8, ETH_16_POOLS = 16, ETH_32_POOLS = 32, ETH_64_POOLS = 64 }
enum  rte_eth_fc_mode { RTE_FC_NONE = 0, RTE_FC_RX_PAUSE, RTE_FC_TX_PAUSE, RTE_FC_FULL }
enum  rte_fdir_pballoc_type { RTE_FDIR_PBALLOC_64K = 0, RTE_FDIR_PBALLOC_128K, RTE_FDIR_PBALLOC_256K }
enum  rte_fdir_status_mode { RTE_FDIR_NO_REPORT_STATUS = 0, RTE_FDIR_REPORT_STATUS, RTE_FDIR_REPORT_STATUS_ALWAYS }
enum  rte_eth_dev_state
enum  rte_eth_event_type {
  RTE_ETH_EVENT_UNKNOWN, RTE_ETH_EVENT_INTR_LSC, RTE_ETH_EVENT_QUEUE_STATE, RTE_ETH_EVENT_INTR_RESET,
  RTE_ETH_EVENT_VF_MBOX, RTE_ETH_EVENT_MACSEC, RTE_ETH_EVENT_INTR_RMV, RTE_ETH_EVENT_MAX
}

Functions

uint16_t rte_eth_find_next (uint16_t port_id)
uint16_t rte_eth_dev_count (void)
int rte_eth_dev_attach (const char *devargs, uint16_t *port_id)
int rte_eth_dev_detach (uint16_t port_id, char *devname)
uint32_t rte_eth_speed_bitflag (uint32_t speed, int duplex)
int rte_eth_dev_configure (uint16_t port_id, uint16_t nb_rx_queue, uint16_t nb_tx_queue, const struct rte_eth_conf *eth_conf)
int rte_eth_rx_queue_setup (uint16_t port_id, uint16_t rx_queue_id, uint16_t nb_rx_desc, unsigned int socket_id, const struct rte_eth_rxconf *rx_conf, struct rte_mempool *mb_pool)
int rte_eth_tx_queue_setup (uint16_t port_id, uint16_t tx_queue_id, uint16_t nb_tx_desc, unsigned int socket_id, const struct rte_eth_txconf *tx_conf)
int rte_eth_dev_socket_id (uint16_t port_id)
int rte_eth_dev_is_valid_port (uint16_t port_id)
int rte_eth_dev_rx_queue_start (uint16_t port_id, uint16_t rx_queue_id)
int rte_eth_dev_rx_queue_stop (uint16_t port_id, uint16_t rx_queue_id)
int rte_eth_dev_tx_queue_start (uint16_t port_id, uint16_t tx_queue_id)
int rte_eth_dev_tx_queue_stop (uint16_t port_id, uint16_t tx_queue_id)
int rte_eth_dev_start (uint16_t port_id)
void rte_eth_dev_stop (uint16_t port_id)
int rte_eth_dev_set_link_up (uint16_t port_id)
int rte_eth_dev_set_link_down (uint16_t port_id)
void rte_eth_dev_close (uint16_t port_id)
int rte_eth_dev_reset (uint16_t port_id)
void rte_eth_promiscuous_enable (uint16_t port_id)
void rte_eth_promiscuous_disable (uint16_t port_id)
int rte_eth_promiscuous_get (uint16_t port_id)
void rte_eth_allmulticast_enable (uint16_t port_id)
void rte_eth_allmulticast_disable (uint16_t port_id)
int rte_eth_allmulticast_get (uint16_t port_id)
void rte_eth_link_get (uint16_t port_id, struct rte_eth_link *link)
void rte_eth_link_get_nowait (uint16_t port_id, struct rte_eth_link *link)
int rte_eth_stats_get (uint16_t port_id, struct rte_eth_stats *stats)
int rte_eth_stats_reset (uint16_t port_id)
int rte_eth_xstats_get_names (uint16_t port_id, struct rte_eth_xstat_name *xstats_names, unsigned int size)
int rte_eth_xstats_get (uint16_t port_id, struct rte_eth_xstat *xstats, unsigned int n)
int rte_eth_xstats_get_names_by_id (uint16_t port_id, struct rte_eth_xstat_name *xstats_names, unsigned int size, uint64_t *ids)
int rte_eth_xstats_get_by_id (uint16_t port_id, const uint64_t *ids, uint64_t *values, unsigned int size)
int rte_eth_xstats_get_id_by_name (uint16_t port_id, const char *xstat_name, uint64_t *id)
void rte_eth_xstats_reset (uint16_t port_id)
int rte_eth_dev_set_tx_queue_stats_mapping (uint16_t port_id, uint16_t tx_queue_id, uint8_t stat_idx)
int rte_eth_dev_set_rx_queue_stats_mapping (uint16_t port_id, uint16_t rx_queue_id, uint8_t stat_idx)
void rte_eth_macaddr_get (uint16_t port_id, struct ether_addr *mac_addr)
void rte_eth_dev_info_get (uint16_t port_id, struct rte_eth_dev_info *dev_info)
int rte_eth_dev_fw_version_get (uint16_t port_id, char *fw_version, size_t fw_size)
int rte_eth_dev_get_supported_ptypes (uint16_t port_id, uint32_t ptype_mask, uint32_t *ptypes, int num)
int rte_eth_dev_get_mtu (uint16_t port_id, uint16_t *mtu)
int rte_eth_dev_set_mtu (uint16_t port_id, uint16_t mtu)
int rte_eth_dev_vlan_filter (uint16_t port_id, uint16_t vlan_id, int on)
int rte_eth_dev_set_vlan_strip_on_queue (uint16_t port_id, uint16_t rx_queue_id, int on)
int rte_eth_dev_set_vlan_ether_type (uint16_t port_id, enum rte_vlan_type vlan_type, uint16_t tag_type)
int rte_eth_dev_set_vlan_offload (uint16_t port_id, int offload_mask)
int rte_eth_dev_get_vlan_offload (uint16_t port_id)
int rte_eth_dev_set_vlan_pvid (uint16_t port_id, uint16_t pvid, int on)
static uint16_t rte_eth_rx_burst (uint16_t port_id, uint16_t queue_id, struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
static int rte_eth_rx_queue_count (uint16_t port_id, uint16_t queue_id)
static int rte_eth_rx_descriptor_done (uint16_t port_id, uint16_t queue_id, uint16_t offset)
static int rte_eth_rx_descriptor_status (uint16_t port_id, uint16_t queue_id, uint16_t offset)
static int rte_eth_tx_descriptor_status (uint16_t port_id, uint16_t queue_id, uint16_t offset)
static uint16_t rte_eth_tx_burst (uint16_t port_id, uint16_t queue_id, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
static uint16_t rte_eth_tx_prepare (uint16_t port_id, uint16_t queue_id, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
int rte_eth_tx_buffer_init (struct rte_eth_dev_tx_buffer *buffer, uint16_t size)
static uint16_t rte_eth_tx_buffer_flush (uint16_t port_id, uint16_t queue_id, struct rte_eth_dev_tx_buffer *buffer)
static __rte_always_inline uint16_t rte_eth_tx_buffer (uint16_t port_id, uint16_t queue_id, struct rte_eth_dev_tx_buffer *buffer, struct rte_mbuf *tx_pkt)
int rte_eth_tx_buffer_set_err_callback (struct rte_eth_dev_tx_buffer *buffer, buffer_tx_error_fn callback, void *userdata)
void rte_eth_tx_buffer_drop_callback (struct rte_mbuf **pkts, uint16_t unsent, void *userdata)
void rte_eth_tx_buffer_count_callback (struct rte_mbuf **pkts, uint16_t unsent, void *userdata)
int rte_eth_tx_done_cleanup (uint16_t port_id, uint16_t queue_id, uint32_t free_cnt)
int rte_eth_dev_callback_register (uint16_t port_id, enum rte_eth_event_type event, rte_eth_dev_cb_fn cb_fn, void *cb_arg)
int rte_eth_dev_callback_unregister (uint16_t port_id, enum rte_eth_event_type event, rte_eth_dev_cb_fn cb_fn, void *cb_arg)
int rte_eth_dev_rx_intr_enable (uint16_t port_id, uint16_t queue_id)
int rte_eth_dev_rx_intr_disable (uint16_t port_id, uint16_t queue_id)
int rte_eth_dev_rx_intr_ctl (uint16_t port_id, int epfd, int op, void *data)
int rte_eth_dev_rx_intr_ctl_q (uint16_t port_id, uint16_t queue_id, int epfd, int op, void *data)
int rte_eth_led_on (uint16_t port_id)
int rte_eth_led_off (uint16_t port_id)
int rte_eth_dev_flow_ctrl_get (uint16_t port_id, struct rte_eth_fc_conf *fc_conf)
int rte_eth_dev_flow_ctrl_set (uint16_t port_id, struct rte_eth_fc_conf *fc_conf)
int rte_eth_dev_priority_flow_ctrl_set (uint16_t port_id, struct rte_eth_pfc_conf *pfc_conf)
int rte_eth_dev_mac_addr_add (uint16_t port, struct ether_addr *mac_addr, uint32_t pool)
int rte_eth_dev_mac_addr_remove (uint16_t port, struct ether_addr *mac_addr)
int rte_eth_dev_default_mac_addr_set (uint16_t port, struct ether_addr *mac_addr)
int rte_eth_dev_rss_reta_update (uint16_t port, struct rte_eth_rss_reta_entry64 *reta_conf, uint16_t reta_size)
int rte_eth_dev_rss_reta_query (uint16_t port, struct rte_eth_rss_reta_entry64 *reta_conf, uint16_t reta_size)
int rte_eth_dev_uc_hash_table_set (uint16_t port, struct ether_addr *addr, uint8_t on)
int rte_eth_dev_uc_all_hash_table_set (uint16_t port, uint8_t on)
int rte_eth_mirror_rule_set (uint16_t port_id, struct rte_eth_mirror_conf *mirror_conf, uint8_t rule_id, uint8_t on)
int rte_eth_mirror_rule_reset (uint16_t port_id, uint8_t rule_id)
int rte_eth_set_queue_rate_limit (uint16_t port_id, uint16_t queue_idx, uint16_t tx_rate)
int rte_eth_dev_rss_hash_update (uint16_t port_id, struct rte_eth_rss_conf *rss_conf)
int rte_eth_dev_rss_hash_conf_get (uint16_t port_id, struct rte_eth_rss_conf *rss_conf)
int rte_eth_dev_udp_tunnel_port_add (uint16_t port_id, struct rte_eth_udp_tunnel *tunnel_udp)
int rte_eth_dev_udp_tunnel_port_delete (uint16_t port_id, struct rte_eth_udp_tunnel *tunnel_udp)
int rte_eth_dev_filter_supported (uint16_t port_id, enum rte_filter_type filter_type)
int rte_eth_dev_filter_ctrl (uint16_t port_id, enum rte_filter_type filter_type, enum rte_filter_op filter_op, void *arg)
int rte_eth_dev_get_dcb_info (uint16_t port_id, struct rte_eth_dcb_info *dcb_info)
void * rte_eth_add_rx_callback (uint16_t port_id, uint16_t queue_id, rte_rx_callback_fn fn, void *user_param)
void * rte_eth_add_first_rx_callback (uint16_t port_id, uint16_t queue_id, rte_rx_callback_fn fn, void *user_param)
void * rte_eth_add_tx_callback (uint16_t port_id, uint16_t queue_id, rte_tx_callback_fn fn, void *user_param)
int rte_eth_remove_rx_callback (uint16_t port_id, uint16_t queue_id, struct rte_eth_rxtx_callback *user_cb)
int rte_eth_remove_tx_callback (uint16_t port_id, uint16_t queue_id, struct rte_eth_rxtx_callback *user_cb)
int rte_eth_rx_queue_info_get (uint16_t port_id, uint16_t queue_id, struct rte_eth_rxq_info *qinfo)
int rte_eth_tx_queue_info_get (uint16_t port_id, uint16_t queue_id, struct rte_eth_txq_info *qinfo)
int rte_eth_dev_get_reg_info (uint16_t port_id, struct rte_dev_reg_info *info)
int rte_eth_dev_get_eeprom_length (uint16_t port_id)
int rte_eth_dev_get_eeprom (uint16_t port_id, struct rte_dev_eeprom_info *info)
int rte_eth_dev_set_eeprom (uint16_t port_id, struct rte_dev_eeprom_info *info)
int rte_eth_dev_set_mc_addr_list (uint16_t port_id, struct ether_addr *mc_addr_set, uint32_t nb_mc_addr)
int rte_eth_timesync_enable (uint16_t port_id)
int rte_eth_timesync_disable (uint16_t port_id)
int rte_eth_timesync_read_rx_timestamp (uint16_t port_id, struct timespec *timestamp, uint32_t flags)
int rte_eth_timesync_read_tx_timestamp (uint16_t port_id, struct timespec *timestamp)
int rte_eth_timesync_adjust_time (uint16_t port_id, int64_t delta)
int rte_eth_timesync_read_time (uint16_t port_id, struct timespec *time)
int rte_eth_timesync_write_time (uint16_t port_id, const struct timespec *time)
struct rte_memzonerte_eth_dma_zone_reserve (const struct rte_eth_dev *eth_dev, const char *name, uint16_t queue_id, size_t size, unsigned align, int socket_id)
int rte_eth_dev_l2_tunnel_eth_type_conf (uint16_t port_id, struct rte_eth_l2_tunnel_conf *l2_tunnel)
int rte_eth_dev_l2_tunnel_offload_set (uint16_t port_id, struct rte_eth_l2_tunnel_conf *l2_tunnel, uint32_t mask, uint8_t en)
int rte_eth_dev_get_port_by_name (const char *name, uint16_t *port_id)
int rte_eth_dev_get_name_by_port (uint16_t port_id, char *name)
int rte_eth_dev_adjust_nb_rx_tx_desc (uint16_t port_id, uint16_t *nb_rx_desc, uint16_t *nb_tx_desc)
int rte_eth_dev_pool_ops_supported (uint16_t port_id, const char *pool)

Detailed Description

RTE Ethernet Device API

The Ethernet Device API is composed of two parts:

  • The application-oriented Ethernet API that includes functions to setup an Ethernet device (configure it, setup its RX and TX queues and start it), to get its MAC address, the speed and the status of its physical link, to receive and to transmit packets, and so on.
  • The driver-oriented Ethernet API that exports a function allowing an Ethernet Poll Mode Driver (PMD) to simultaneously register itself as an Ethernet device driver and as a PCI driver for a set of matching PCI [Ethernet] devices classes.

By default, all the functions of the Ethernet Device API exported by a PMD are lock-free functions which assume to not be invoked in parallel on different logical cores to work on the same target object. For instance, the receive function of a PMD cannot be invoked in parallel on two logical cores to poll the same RX queue [of the same port]. Of course, this function can be invoked in parallel by different logical cores on different RX queues. It is the responsibility of the upper level application to enforce this rule.

If needed, parallel accesses by multiple logical cores to shared queues shall be explicitly protected by dedicated inline lock-aware functions built on top of their corresponding lock-free functions of the PMD API.

In all functions of the Ethernet API, the Ethernet device is designated by an integer >= 0 named the device port identifier.

At the Ethernet driver level, Ethernet devices are represented by a generic data structure of type rte_eth_dev.

Ethernet devices are dynamically registered during the PCI probing phase performed at EAL initialization time. When an Ethernet device is being probed, an rte_eth_dev structure and a new port identifier are allocated for that device. Then, the eth_dev_init() function supplied by the Ethernet driver matching the probed PCI device is invoked to properly initialize the device.

The role of the device init function consists of resetting the hardware, checking access to Non-volatile Memory (NVM), reading the MAC address from NVM etc.

If the device init operation is successful, the correspondence between the port identifier assigned to the new device and its associated rte_eth_dev structure is effectively registered. Otherwise, both the rte_eth_dev structure and the port identifier are freed.

The functions exported by the application Ethernet API to setup a device designated by its port identifier must be invoked in the following order:

Then, the network application can invoke, in any order, the functions exported by the Ethernet API to get the MAC address of a given device, to get the speed and the status of a device physical link, to receive/transmit [burst of] packets, and so on.

If the application wants to change the configuration (i.e. call rte_eth_dev_configure(), rte_eth_tx_queue_setup(), or rte_eth_rx_queue_setup()), it must call rte_eth_dev_stop() first to stop the device and then do the reconfiguration before calling rte_eth_dev_start() again. The transmit and receive functions should not be invoked when the device is stopped.

Please note that some configuration is not stored between calls to rte_eth_dev_stop()/rte_eth_dev_start(). The following configuration will be retained:

- flow control settings
- receive mode configuration (promiscuous mode, hardware checksum mode,
  RSS/VMDQ settings etc.)
- VLAN filtering configuration
- MAC addresses supplied to MAC address array
- flow director filtering mode (but not filtering rules)
- NIC queue statistics mappings

Any other configuration will not be stored and will need to be re-entered before a call to rte_eth_dev_start().

Finally, a network application can close an Ethernet device by invoking the rte_eth_dev_close() function.

Each function of the application Ethernet API invokes a specific function of the PMD that controls the target device designated by its port identifier. For this purpose, all device-specific functions of an Ethernet driver are supplied through a set of pointers contained in a generic structure of type eth_dev_ops. The address of the eth_dev_ops structure is stored in the rte_eth_dev structure by the device init function of the Ethernet driver, which is invoked during the PCI probing phase, as explained earlier.

In other words, each function of the Ethernet API simply retrieves the rte_eth_dev structure associated with the device port identifier and performs an indirect invocation of the corresponding driver function supplied in the eth_dev_ops structure of the rte_eth_dev structure.

For performance reasons, the address of the burst-oriented RX and TX functions of the Ethernet driver are not contained in the eth_dev_ops structure. Instead, they are directly stored at the beginning of the rte_eth_dev structure to avoid an extra indirect memory access during their invocation.

RTE ethernet device drivers do not use interrupts for transmitting or receiving. Instead, Ethernet drivers export Poll-Mode receive and transmit functions to applications. Both receive and transmit functions are packet-burst oriented to minimize their cost per packet through the following optimizations:

  • Sharing among multiple packets the incompressible cost of the invocation of receive/transmit functions.
  • Enabling receive/transmit functions to take advantage of burst-oriented hardware features (L1 cache, prefetch instructions, NIC head/tail registers) to minimize the number of CPU cycles per packet, for instance, by avoiding useless read memory accesses to ring descriptors, or by systematically using arrays of pointers that exactly fit L1 cache line boundaries and sizes.

The burst-oriented receive function does not provide any error notification, to avoid the corresponding overhead. As a hint, the upper-level application might check the status of the device link once being systematically returned a 0 value by the receive function of the driver for a given number of tries.

Definition in file rte_ethdev.h.

Macro Definition Documentation

#define ETH_LINK_SPEED_AUTONEG   (0 << 0)

Device supported speeds bitmap flagsAutonegotiate (all speeds)

Definition at line 224 of file rte_ethdev.h.

#define ETH_LINK_SPEED_FIXED   (1 << 0)

Disable autoneg (fixed speed)

Definition at line 225 of file rte_ethdev.h.

#define ETH_LINK_SPEED_10M_HD   (1 << 1)

10 Mbps half-duplex

Definition at line 226 of file rte_ethdev.h.

#define ETH_LINK_SPEED_10M   (1 << 2)

10 Mbps full-duplex

Definition at line 227 of file rte_ethdev.h.

#define ETH_LINK_SPEED_100M_HD   (1 << 3)

100 Mbps half-duplex

Definition at line 228 of file rte_ethdev.h.

#define ETH_LINK_SPEED_100M   (1 << 4)

100 Mbps full-duplex

Definition at line 229 of file rte_ethdev.h.

#define ETH_LINK_SPEED_1G   (1 << 5)

1 Gbps

Definition at line 230 of file rte_ethdev.h.

#define ETH_LINK_SPEED_2_5G   (1 << 6)

2.5 Gbps

Definition at line 231 of file rte_ethdev.h.

#define ETH_LINK_SPEED_5G   (1 << 7)

5 Gbps

Definition at line 232 of file rte_ethdev.h.

#define ETH_LINK_SPEED_10G   (1 << 8)

10 Gbps

Definition at line 233 of file rte_ethdev.h.

#define ETH_LINK_SPEED_20G   (1 << 9)

20 Gbps

Definition at line 234 of file rte_ethdev.h.

#define ETH_LINK_SPEED_25G   (1 << 10)

25 Gbps

Definition at line 235 of file rte_ethdev.h.

#define ETH_LINK_SPEED_40G   (1 << 11)

40 Gbps

Definition at line 236 of file rte_ethdev.h.

#define ETH_LINK_SPEED_50G   (1 << 12)

50 Gbps

Definition at line 237 of file rte_ethdev.h.

#define ETH_LINK_SPEED_56G   (1 << 13)

56 Gbps

Definition at line 238 of file rte_ethdev.h.

#define ETH_LINK_SPEED_100G   (1 << 14)

100 Gbps

Definition at line 239 of file rte_ethdev.h.

#define ETH_SPEED_NUM_NONE   0

Ethernet numeric link speeds in MbpsNot defined

Definition at line 244 of file rte_ethdev.h.

#define ETH_SPEED_NUM_10M   10

10 Mbps

Definition at line 245 of file rte_ethdev.h.

#define ETH_SPEED_NUM_100M   100

100 Mbps

Definition at line 246 of file rte_ethdev.h.

#define ETH_SPEED_NUM_1G   1000

1 Gbps

Definition at line 247 of file rte_ethdev.h.

#define ETH_SPEED_NUM_2_5G   2500

2.5 Gbps

Definition at line 248 of file rte_ethdev.h.

#define ETH_SPEED_NUM_5G   5000

5 Gbps

Definition at line 249 of file rte_ethdev.h.

#define ETH_SPEED_NUM_10G   10000

10 Gbps

Definition at line 250 of file rte_ethdev.h.

#define ETH_SPEED_NUM_20G   20000

20 Gbps

Definition at line 251 of file rte_ethdev.h.

#define ETH_SPEED_NUM_25G   25000

25 Gbps

Definition at line 252 of file rte_ethdev.h.

#define ETH_SPEED_NUM_40G   40000

40 Gbps

Definition at line 253 of file rte_ethdev.h.

#define ETH_SPEED_NUM_50G   50000

50 Gbps

Definition at line 254 of file rte_ethdev.h.

#define ETH_SPEED_NUM_56G   56000

56 Gbps

Definition at line 255 of file rte_ethdev.h.

#define ETH_SPEED_NUM_100G   100000

100 Gbps

Definition at line 256 of file rte_ethdev.h.

#define ETH_LINK_HALF_DUPLEX   0

Half-duplex connection.

Definition at line 270 of file rte_ethdev.h.

#define ETH_LINK_UP   1

Link is up.

Definition at line 273 of file rte_ethdev.h.

#define ETH_LINK_FIXED   0

No autonegotiation.

Definition at line 274 of file rte_ethdev.h.

#define ETH_LINK_AUTONEG   1

Autonegotiated.

Definition at line 275 of file rte_ethdev.h.

#define ETH_MQ_RX_RSS_FLAG   0x1

Simple flags are used for rte_eth_conf.rxmode.mq_mode.

Definition at line 290 of file rte_ethdev.h.

#define ETH_RSS   ETH_MQ_RX_RSS

for rx mq mode backward compatible

Definition at line 323 of file rte_ethdev.h.

#define ETH_DCB_NONE   ETH_MQ_TX_NONE

for tx mq mode backward compatible

Examples:
examples/qos_meter/main.c, examples/qos_sched/init.c, and examples/quota_watermark/qw/init.c.

Definition at line 341 of file rte_ethdev.h.

#define ETH_RSS_TUNNEL
Value:
( \
ETH_RSS_VXLAN | \
ETH_RSS_GENEVE | \
ETH_RSS_NVGRE)

Mask of valid RSS hash protocols

Definition at line 480 of file rte_ethdev.h.

#define ETH_VMDQ_MAX_VLAN_FILTERS   64

Maximum nb. of VMDQ vlan filters.

Definition at line 521 of file rte_ethdev.h.

#define ETH_DCB_NUM_USER_PRIORITIES   8

Maximum nb. of DCB priorities.

Examples:
examples/vmdq_dcb/main.c.

Definition at line 522 of file rte_ethdev.h.

#define ETH_VMDQ_DCB_NUM_QUEUES   128

Maximum nb. of VMDQ DCB queues.

Definition at line 523 of file rte_ethdev.h.

#define ETH_DCB_NUM_QUEUES   128

Maximum nb. of DCB queues.

Definition at line 524 of file rte_ethdev.h.

#define ETH_DCB_PG_SUPPORT   0x00000001

Priority Group(ETS) support.

Definition at line 527 of file rte_ethdev.h.

#define ETH_DCB_PFC_SUPPORT   0x00000002

Priority Flow Control support.

Definition at line 528 of file rte_ethdev.h.

#define ETH_VLAN_STRIP_OFFLOAD   0x0001

VLAN Strip On/Off

Definition at line 531 of file rte_ethdev.h.

#define ETH_VLAN_FILTER_OFFLOAD   0x0002

VLAN Filter On/Off

Definition at line 532 of file rte_ethdev.h.

#define ETH_VLAN_EXTEND_OFFLOAD   0x0004

VLAN Extend On/Off

Definition at line 533 of file rte_ethdev.h.

#define ETH_VLAN_STRIP_MASK   0x0001

VLAN Strip setting mask

Definition at line 536 of file rte_ethdev.h.

#define ETH_VLAN_FILTER_MASK   0x0002

VLAN Filter setting mask

Examples:
examples/ethtool/lib/rte_ethtool.c.

Definition at line 537 of file rte_ethdev.h.

#define ETH_VLAN_EXTEND_MASK   0x0004

VLAN Extend setting mask

Definition at line 538 of file rte_ethdev.h.

#define ETH_VLAN_ID_MAX   0x0FFF

VLAN ID is in lower 12 bits

Definition at line 539 of file rte_ethdev.h.

#define ETH_NUM_RECEIVE_MAC_ADDR   128

Maximum nb. of receive mac addr.

Definition at line 542 of file rte_ethdev.h.

#define ETH_VMDQ_NUM_UC_HASH_ARRAY   128

Maximum nb. of UC hash array.

Definition at line 545 of file rte_ethdev.h.

#define ETH_VMDQ_ACCEPT_UNTAG   0x0001

accept untagged packets.

Examples:
examples/ethtool/lib/rte_ethtool.c.

Definition at line 548 of file rte_ethdev.h.

#define ETH_VMDQ_ACCEPT_HASH_MC   0x0002

accept packets in multicast table .

Definition at line 549 of file rte_ethdev.h.

#define ETH_VMDQ_ACCEPT_HASH_UC   0x0004

accept packets in unicast table.

Definition at line 550 of file rte_ethdev.h.

#define ETH_VMDQ_ACCEPT_BROADCAST   0x0008

accept broadcast packets.

Examples:
examples/vhost/main.c.

Definition at line 551 of file rte_ethdev.h.

#define ETH_VMDQ_ACCEPT_MULTICAST   0x0010

multicast promiscuous.

Examples:
examples/vhost/main.c.

Definition at line 552 of file rte_ethdev.h.

#define ETH_MIRROR_MAX_VLANS   64

Maximum nb. of vlan per mirror rule

Definition at line 555 of file rte_ethdev.h.

#define ETH_MIRROR_VIRTUAL_POOL_UP   0x01

Virtual Pool uplink Mirroring.

Definition at line 557 of file rte_ethdev.h.

#define ETH_MIRROR_UPLINK_PORT   0x02

Uplink Port Mirroring.

Definition at line 558 of file rte_ethdev.h.

#define ETH_MIRROR_DOWNLINK_PORT   0x04

Downlink Port Mirroring.

Definition at line 559 of file rte_ethdev.h.

#define ETH_MIRROR_VLAN   0x08

VLAN Mirroring.

Definition at line 560 of file rte_ethdev.h.

#define ETH_MIRROR_VIRTUAL_POOL_DOWN   0x10

Virtual Pool downlink Mirroring.

Definition at line 561 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOMULTSEGS   0x0001

nb_segs=1 for all mbufs

Examples:
examples/ip_pipeline/config_parse.c, examples/ip_pipeline/init.c, and examples/qos_sched/init.c.

Definition at line 733 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOREFCOUNT   0x0002

refcnt can be ignored

Definition at line 734 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOMULTMEMP   0x0004

all bufs come from same mempool

Definition at line 735 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOVLANOFFL   0x0100

disable VLAN offload

Examples:
examples/vhost/main.c.

Definition at line 736 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOXSUMSCTP   0x0200

disable SCTP checksum offload

Definition at line 737 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOXSUMUDP   0x0400

disable UDP checksum offload

Definition at line 738 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_NOXSUMTCP   0x0800

disable TCP checksum offload

Definition at line 739 of file rte_ethdev.h.

#define ETH_TXQ_FLAGS_IGNORE   0x8000

When set the txq_flags should be ignored, instead per-queue Tx offloads will be set on offloads field located on rte_eth_txq_conf struct. This flag is temporary till the rte_eth_txq_conf.txq_flags API will be deprecated.

Definition at line 753 of file rte_ethdev.h.

#define DEV_RX_OFFLOAD_VLAN_STRIP   0x00000001

A structure used to retrieve the contextual information of an Ethernet device, such as the controlling driver of the device, its PCI context, etc... RX offload capabilities of a device.

Definition at line 954 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_VLAN_INSERT   0x00000001

TX offload capabilities of a device.

Definition at line 980 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM   0x00000080

Used for tunneling packet.

Definition at line 987 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_VXLAN_TNL_TSO   0x00000200

Used for tunneling packet.

Definition at line 989 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_GRE_TNL_TSO   0x00000400

Used for tunneling packet.

Definition at line 990 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_IPIP_TNL_TSO   0x00000800

Used for tunneling packet.

Definition at line 991 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_GENEVE_TNL_TSO   0x00001000

Used for tunneling packet.

Definition at line 992 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_MT_LOCKFREE   0x00004000

Multiple threads can invoke rte_eth_tx_burst() concurrently on the same tx queue without SW lock.

Definition at line 994 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_MULTI_SEGS   0x00008000

Device supports multi segment send.

Definition at line 998 of file rte_ethdev.h.

#define DEV_TX_OFFLOAD_MBUF_FAST_FREE   0x00010000

Device supports optimization for fast release of mbufs. When set application must guarantee that per-queue all mbufs comes from the same mempool and has refcnt = 1.

Definition at line 1000 of file rte_ethdev.h.

#define RTE_ETH_XSTATS_NAME_SIZE   64

Maximum name length for extended statistics counters

Definition at line 1073 of file rte_ethdev.h.

#define RTE_ETH_QUEUE_STATE_STOPPED   0

RX/TX queue states

Definition at line 1135 of file rte_ethdev.h.

#define ETH_L2_TUNNEL_ENABLE_MASK   0x00000001

l2 tunnel configuration.< l2 tunnel enable mask l2 tunnel insertion mask

Definition at line 1164 of file rte_ethdev.h.

#define ETH_L2_TUNNEL_INSERTION_MASK   0x00000002

l2 tunnel stripping mask

Definition at line 1166 of file rte_ethdev.h.

#define ETH_L2_TUNNEL_STRIPPING_MASK   0x00000004

l2 tunnel forwarding mask

Definition at line 1168 of file rte_ethdev.h.

#define RTE_ETH_DEV_INTR_LSC   0x0002

Device supports link state interrupt

Definition at line 1816 of file rte_ethdev.h.

#define RTE_ETH_DEV_BONDED_SLAVE   0x0004

Device is a bonded slave

Definition at line 1818 of file rte_ethdev.h.

#define RTE_ETH_DEV_INTR_RMV   0x0008

Device supports device removal interrupt

Definition at line 1820 of file rte_ethdev.h.

#define RTE_ETH_FOREACH_DEV (   p)
Value:
for (p = rte_eth_find_next(0); \
(unsigned int)p < (unsigned int)RTE_MAX_ETHPORTS; \
p = rte_eth_find_next(p + 1))

Macro to iterate over all enabled ethdev ports.

Definition at line 1842 of file rte_ethdev.h.

#define RTE_ETH_RX_DESC_AVAIL   0

Desc available for hw.

Definition at line 2966 of file rte_ethdev.h.

#define RTE_ETH_RX_DESC_DONE   1

Desc done, filled by hw.

Definition at line 2967 of file rte_ethdev.h.

#define RTE_ETH_RX_DESC_UNAVAIL   2

Desc used by driver or hw.

Definition at line 2968 of file rte_ethdev.h.

#define RTE_ETH_TX_DESC_FULL   0

Desc filled for hw, waiting xmit.

Definition at line 3024 of file rte_ethdev.h.

#define RTE_ETH_TX_DESC_DONE   1

Desc done, packet is transmitted.

Definition at line 3025 of file rte_ethdev.h.

#define RTE_ETH_TX_DESC_UNAVAIL   2

Desc used by driver or hw.

Definition at line 3026 of file rte_ethdev.h.

Typedef Documentation

typedef void(* eth_promiscuous_enable_t)(struct rte_eth_dev *dev)

<

Definition at line 1199 of file rte_ethdev.h.

typedef uint16_t(* rte_rx_callback_fn)(uint16_t port, uint16_t queue, struct rte_mbuf *pkts[], uint16_t nb_pkts, uint16_t max_pkts, void *user_param)

Function type used for RX packet processing packet callbacks.

The callback function is called on RX with a burst of packets that have been received on the given port and queue.

Parameters
portThe Ethernet port on which RX is being performed.
queueThe queue on the Ethernet port which is being used to receive the packets.
pktsThe burst of packets that have just been received.
nb_pktsThe number of packets in the burst pointed to by "pkts".
max_pktsThe max number of packets that can be stored in the "pkts" array.
user_paramThe arbitrary user parameter passed in by the application when the callback was originally configured.
Returns
The number of packets returned to the user.
Examples:
examples/l3fwd/main.c.

Definition at line 1666 of file rte_ethdev.h.

typedef uint16_t(* rte_tx_callback_fn)(uint16_t port, uint16_t queue, struct rte_mbuf *pkts[], uint16_t nb_pkts, void *user_param)

Function type used for TX packet processing packet callbacks.

The callback function is called on TX with a burst of packets immediately before the packets are put onto the hardware queue for transmission.

Parameters
portThe Ethernet port on which TX is being performed.
queueThe queue on the Ethernet port which is being used to transmit the packets.
pktsThe burst of packets that are about to be transmitted.
nb_pktsThe number of packets in the burst pointed to by "pkts".
user_paramThe arbitrary user parameter passed in by the application when the callback was originally configured.
Returns
The number of packets to be written to the NIC.

Definition at line 1690 of file rte_ethdev.h.

typedef int(* rte_eth_dev_cb_fn)(uint16_t port_id, enum rte_eth_event_type event, void *cb_arg, void *ret_param)

user application callback to be registered for interrupts

Definition at line 3532 of file rte_ethdev.h.

Enumeration Type Documentation

A set of values to identify what method is to be used to route packets to multiple queues.

Enumerator:
ETH_MQ_RX_NONE 

None of DCB,RSS or VMDQ mode

ETH_MQ_RX_RSS 

For RX side, only RSS is on

ETH_MQ_RX_DCB 

For RX side,only DCB is on.

ETH_MQ_RX_DCB_RSS 

Both DCB and RSS enable

ETH_MQ_RX_VMDQ_ONLY 

Only VMDQ, no RSS nor DCB

ETH_MQ_RX_VMDQ_RSS 

RSS mode with VMDQ

ETH_MQ_RX_VMDQ_DCB 

Use VMDQ+DCB to route traffic to queues

ETH_MQ_RX_VMDQ_DCB_RSS 

Enable both VMDQ and DCB in VMDq

Definition at line 298 of file rte_ethdev.h.

A set of values to identify what method is to be used to transmit packets using multi-TCs.

Enumerator:
ETH_MQ_TX_NONE 

It is in neither DCB nor VT mode.

ETH_MQ_TX_DCB 

For TX side,only DCB is on.

ETH_MQ_TX_VMDQ_DCB 

For TX side,both DCB and VT is on.

ETH_MQ_TX_VMDQ_ONLY 

Only VT on, no DCB

Definition at line 331 of file rte_ethdev.h.

VLAN types to indicate if it is for single VLAN, inner VLAN or outer VLAN. Note that single VLAN is treated the same as inner VLAN.

Enumerator:
ETH_VLAN_TYPE_INNER 

Inner VLAN.

ETH_VLAN_TYPE_OUTER 

Single VLAN, or outer VLAN.

Definition at line 392 of file rte_ethdev.h.

This enum indicates the possible number of traffic classes in DCB configurations

Enumerator:
ETH_4_TCS 

4 TCs with DCB.

ETH_8_TCS 

8 TCs with DCB.

Examples:
examples/vmdq_dcb/main.c.

Definition at line 600 of file rte_ethdev.h.

This enum indicates the possible number of queue pools in VMDQ configurations.

Enumerator:
ETH_8_POOLS 

8 VMDq pools.

ETH_16_POOLS 

16 VMDq pools.

ETH_32_POOLS 

32 VMDq pools.

ETH_64_POOLS 

64 VMDq pools.

Examples:
examples/vhost/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Definition at line 609 of file rte_ethdev.h.

This enum indicates the flow control mode

Enumerator:
RTE_FC_NONE 

Disable flow control.

RTE_FC_RX_PAUSE 

RX pause frame, enable flowctrl on TX side.

RTE_FC_TX_PAUSE 

TX pause frame, enable flowctrl on RX side.

RTE_FC_FULL 

Enable flow control on both side.

Definition at line 809 of file rte_ethdev.h.

Memory space that can be configured to store Flow Director filters in the board memory.

Enumerator:
RTE_FDIR_PBALLOC_64K 

64k.

RTE_FDIR_PBALLOC_128K 

128k.

RTE_FDIR_PBALLOC_256K 

256k.

Definition at line 845 of file rte_ethdev.h.

Select report mode of FDIR hash information in RX descriptors.

Enumerator:
RTE_FDIR_NO_REPORT_STATUS 

Never report FDIR hash.

RTE_FDIR_REPORT_STATUS 

Only report FDIR hash for matching pkts.

RTE_FDIR_REPORT_STATUS_ALWAYS 

Always report FDIR hash.

Definition at line 854 of file rte_ethdev.h.

A set of values to describe the possible states of an eth device.

Definition at line 1710 of file rte_ethdev.h.

The eth device event type for interrupt, and maybe others in the future.

Enumerator:
RTE_ETH_EVENT_UNKNOWN 

unknown event type

RTE_ETH_EVENT_INTR_LSC 

lsc interrupt event

RTE_ETH_EVENT_QUEUE_STATE 

queue state event (enabled/disabled)

RTE_ETH_EVENT_INTR_RESET 

reset interrupt event, sent to VF on PF reset

RTE_ETH_EVENT_VF_MBOX 

message from the VF received by PF

RTE_ETH_EVENT_MACSEC 

MACsec offload related event

RTE_ETH_EVENT_INTR_RMV 

device removal event

RTE_ETH_EVENT_MAX 

max value of this enum

Definition at line 3519 of file rte_ethdev.h.

Function Documentation

uint16_t rte_eth_find_next ( uint16_t  port_id)

Iterates over valid ethdev ports.

Parameters
port_idThe id of the next possible valid port.
Returns
Next valid port id, RTE_MAX_ETHPORTS if there is none.
uint16_t rte_eth_dev_count ( void  )

Get the total number of Ethernet devices that have been successfully initialized by the matching Ethernet driver during the PCI probing phase and that are available for applications to use. These devices must be accessed by using the RTE_ETH_FOREACH_DEV() macro to deal with non-contiguous ranges of devices. These non-contiguous ranges can be created by calls to hotplug functions or by some PMDs.

Returns
  • The total number of usable Ethernet devices.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/ethapp.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/bridge/bridge.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/node/node.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/main.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/channel_monitor.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_dev_attach ( const char *  devargs,
uint16_t *  port_id 
)

Attach a new Ethernet device specified by arguments.

Parameters
devargsA pointer to a strings array describing the new device to be attached. The strings should be a pci address like '0000:01:00.0' or virtual device name like 'net_pcap0'.
port_idA pointer to a port identifier actually attached.
Returns
0 on success and port_id is filled, negative on error
int rte_eth_dev_detach ( uint16_t  port_id,
char *  devname 
)

Detach a Ethernet device specified by port identifier. This function must be called when the device is in the closed state.

Parameters
port_idThe port identifier of the device to detach.
devnameA pointer to a buffer that will be filled with the device name. This buffer must be at least RTE_DEV_NAME_MAX_LEN long.
Returns
0 on success and devname is filled, negative on error
uint32_t rte_eth_speed_bitflag ( uint32_t  speed,
int  duplex 
)

Convert a numerical speed in Mbps to a bitmap flag that can be used in the bitmap link_speeds of the struct rte_eth_conf

Parameters
speedNumerical speed value in Mbps
duplexETH_LINK_[HALF/FULL]_DUPLEX (only for 10/100M speeds)
Returns
0 if the speed cannot be mapped
int rte_eth_dev_configure ( uint16_t  port_id,
uint16_t  nb_rx_queue,
uint16_t  nb_tx_queue,
const struct rte_eth_conf eth_conf 
)

Configure an Ethernet device. This function must be invoked first before any other function in the Ethernet API. This function can also be re-invoked when a device is in the stopped state.

Parameters
port_idThe port identifier of the Ethernet device to configure.
nb_rx_queueThe number of receive queues to set up for the Ethernet device.
nb_tx_queueThe number of transmit queues to set up for the Ethernet device.
eth_confThe pointer to the configuration data to be used for the Ethernet device. The rte_eth_conf structure includes:
  • the hardware offload features to activate, with dedicated fields for each statically configurable offload hardware feature provided by Ethernet devices, such as IP checksum or VLAN tag stripping for example. The Rx offload bitfield API is obsolete and will be deprecated. Applications should set the ignore_bitfield_offloads bit on rxmode structure and use offloads field to set per-port offloads instead.
  • the Receive Side Scaling (RSS) configuration when using multiple RX queues per port.

Embedding all configuration information in a single data structure is the more flexible method that allows the addition of new features without changing the syntax of the API.

Returns
  • 0: Success, device configured.
  • <0: Error code returned by the driver configuration function.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/load_balancer/init.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_rx_queue_setup ( uint16_t  port_id,
uint16_t  rx_queue_id,
uint16_t  nb_rx_desc,
unsigned int  socket_id,
const struct rte_eth_rxconf rx_conf,
struct rte_mempool mb_pool 
)

Allocate and set up a receive queue for an Ethernet device.

The function allocates a contiguous block of memory for nb_rx_desc receive descriptors from a memory zone associated with socket_id and initializes each receive descriptor with a network buffer allocated from the memory pool mb_pool.

Parameters
port_idThe port identifier of the Ethernet device.
rx_queue_idThe index of the receive queue to set up. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
nb_rx_descThe number of receive descriptors to allocate for the receive ring.
socket_idThe socket_id argument is the socket identifier in case of NUMA. The value can be SOCKET_ID_ANY if there is no NUMA constraint for the DMA memory allocated for the receive descriptors of the ring.
rx_confThe pointer to the configuration data to be used for the receive queue. NULL value is allowed, in which case default RX configuration will be used. The rx_conf structure contains an rx_thresh structure with the values of the Prefetch, Host, and Write-Back threshold registers of the receive ring. In addition it contains the hardware offloads features to activate using the DEV_RX_OFFLOAD_* flags.
mb_poolThe pointer to the memory pool from which to allocate rte_mbuf network memory buffers to populate each descriptor of the receive ring.
Returns
  • 0: Success, receive queue correctly set up.
  • -EINVAL: The size of network buffers which can be allocated from the memory pool does not fit the various buffer sizes allowed by the device controller.
  • -ENOMEM: Unable to allocate the receive ring descriptors or to allocate network memory buffers from the memory pool when initializing receive descriptors.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/ethtool/lib/rte_ethtool.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/load_balancer/init.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_tx_queue_setup ( uint16_t  port_id,
uint16_t  tx_queue_id,
uint16_t  nb_tx_desc,
unsigned int  socket_id,
const struct rte_eth_txconf tx_conf 
)

Allocate and set up a transmit queue for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
tx_queue_idThe index of the transmit queue to set up. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
nb_tx_descThe number of transmit descriptors to allocate for the transmit ring.
socket_idThe socket_id argument is the socket identifier in case of NUMA. Its value can be SOCKET_ID_ANY if there is no NUMA constraint for the DMA memory allocated for the transmit descriptors of the ring.
tx_confThe pointer to the configuration data to be used for the transmit queue. NULL value is allowed, in which case default RX configuration will be used. The tx_conf structure contains the following data:
  • The tx_thresh structure with the values of the Prefetch, Host, and Write-Back threshold registers of the transmit ring. When setting Write-Back threshold to the value greater then zero, tx_rs_thresh value should be explicitly set to one.
  • The tx_free_thresh value indicates the [minimum] number of network buffers that must be pending in the transmit ring to trigger their [implicit] freeing by the driver transmit function.
  • The tx_rs_thresh value indicates the [minimum] number of transmit descriptors that must be pending in the transmit ring before setting the RS bit on a descriptor by the driver transmit function. The tx_rs_thresh value should be less or equal then tx_free_thresh value, and both of them should be less then nb_tx_desc - 3.
  • The txq_flags member contains flags to pass to the TX queue setup function to configure the behavior of the TX queue. This should be set to 0 if no special configuration is required. This API is obsolete and will be deprecated. Applications should set it to ETH_TXQ_FLAGS_IGNORE and use the offloads field below.
  • The offloads member contains Tx offloads to be enabled. Offloads which are not set cannot be used on the datapath.

    Note that setting tx_free_thresh or tx_rs_thresh value to 0 forces the transmit function to use default values.

Returns
  • 0: Success, the transmit queue is correctly set up.
  • -ENOMEM: Unable to allocate the transmit ring descriptors.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/ethtool/lib/rte_ethtool.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/load_balancer/init.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_dev_socket_id ( uint16_t  port_id)

Return the NUMA socket to which an Ethernet device is connected

Parameters
port_idThe port identifier of the Ethernet device
Returns
The NUMA socket id to which the Ethernet device is connected or a default of zero if the socket could not be determined. -1 is returned is the port_id value is out of range.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_pipeline/init.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/packet_ordering/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/node/node.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_dev_is_valid_port ( uint16_t  port_id)

Check if port_id of device is attached

Parameters
port_idThe port identifier of the Ethernet device
Returns
  • 0 if port is out of range or not attached
  • 1 if device is attached
Examples:
examples/ethtool/ethtool-app/ethapp.c.
int rte_eth_dev_rx_queue_start ( uint16_t  port_id,
uint16_t  rx_queue_id 
)

Start specified RX queue of a port. It is used when rx_deferred_start flag of the specified queue is true.

Parameters
port_idThe port identifier of the Ethernet device
rx_queue_idThe index of the rx queue to update the ring. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • 0: Success, the receive queue is started.
  • -EINVAL: The port_id or the queue_id out of range.
  • -ENOTSUP: The function not supported in PMD driver.
int rte_eth_dev_rx_queue_stop ( uint16_t  port_id,
uint16_t  rx_queue_id 
)

Stop specified RX queue of a port

Parameters
port_idThe port identifier of the Ethernet device
rx_queue_idThe index of the rx queue to update the ring. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • 0: Success, the receive queue is stopped.
  • -EINVAL: The port_id or the queue_id out of range.
  • -ENOTSUP: The function not supported in PMD driver.
int rte_eth_dev_tx_queue_start ( uint16_t  port_id,
uint16_t  tx_queue_id 
)

Start TX for specified queue of a port. It is used when tx_deferred_start flag of the specified queue is true.

Parameters
port_idThe port identifier of the Ethernet device
tx_queue_idThe index of the tx queue to update the ring. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • 0: Success, the transmit queue is started.
  • -EINVAL: The port_id or the queue_id out of range.
  • -ENOTSUP: The function not supported in PMD driver.
int rte_eth_dev_tx_queue_stop ( uint16_t  port_id,
uint16_t  tx_queue_id 
)

Stop specified TX queue of a port

Parameters
port_idThe port identifier of the Ethernet device
tx_queue_idThe index of the tx queue to update the ring. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • 0: Success, the transmit queue is stopped.
  • -EINVAL: The port_id or the queue_id out of range.
  • -ENOTSUP: The function not supported in PMD driver.
int rte_eth_dev_start ( uint16_t  port_id)

Start an Ethernet device.

The device start step is the last one and consists of setting the configured offload features and in starting the transmit and the receive units of the device. On success, all basic functions exported by the Ethernet API (link status, receive/transmit, and so on) can be invoked.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • 0: Success, Ethernet device started.
  • <0: Error code of the driver device start function.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/ethtool/lib/rte_ethtool.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/load_balancer/init.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vm_power_manager/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
void rte_eth_dev_stop ( uint16_t  port_id)
int rte_eth_dev_set_link_up ( uint16_t  port_id)

Link up an Ethernet device.

Set device link up will re-enable the device rx/tx functionality after it is previously set device linked down.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • 0: Success, Ethernet device linked up.
  • <0: Error code of the driver device link up function.
Examples:
examples/ip_pipeline/init.c.
int rte_eth_dev_set_link_down ( uint16_t  port_id)

Link down an Ethernet device. The device rx/tx functionality will be disabled if success, and it can be re-enabled with a call to rte_eth_dev_set_link_up()

Parameters
port_idThe port identifier of the Ethernet device.
Examples:
examples/ip_pipeline/init.c.
void rte_eth_dev_close ( uint16_t  port_id)

Close a stopped Ethernet device. The device cannot be restarted! The function frees all resources except for needed by the closed state. To free these resources, call rte_eth_dev_detach().

Parameters
port_idThe port identifier of the Ethernet device.
Examples:
examples/flow_filtering/main.c, examples/l2fwd/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, and examples/l3fwd/main.c.
int rte_eth_dev_reset ( uint16_t  port_id)

Reset a Ethernet device and keep its port id.

When a port has to be reset passively, the DPDK application can invoke this function. For example when a PF is reset, all its VFs should also be reset. Normally a DPDK application can invoke this function when RTE_ETH_EVENT_INTR_RESET event is detected, but can also use it to start a port reset in other circumstances.

When this function is called, it first stops the port and then calls the PMD specific dev_uninit( ) and dev_init( ) to return the port to initial state, in which no Tx and Rx queues are setup, as if the port has been reset and not started. The port keeps the port id it had before the function call.

After calling rte_eth_dev_reset( ), the application should use rte_eth_dev_configure( ), rte_eth_rx_queue_setup( ), rte_eth_tx_queue_setup( ), and rte_eth_dev_start( ) to reconfigure the device as appropriate.

Note: To avoid unexpected behavior, the application should stop calling Tx and Rx functions before calling rte_eth_dev_reset( ). For thread safety, all these controlling functions should be called from the same thread.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (0) if successful.
  • (-EINVAL) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support this function.
  • (-EPERM) if not ran from the primary process.
  • (-EIO) if re-initialisation failed.
  • (-ENOMEM) if the reset failed due to OOM.
  • (-EAGAIN) if the reset temporarily failed and should be retried later.
void rte_eth_promiscuous_disable ( uint16_t  port_id)

Disable receipt in promiscuous mode for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
int rte_eth_promiscuous_get ( uint16_t  port_id)

Return the value of promiscuous mode for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (1) if promiscuous is enabled
  • (0) if promiscuous is disabled.
  • (-1) on error
void rte_eth_allmulticast_enable ( uint16_t  port_id)

Enable the receipt of any multicast frame by an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
void rte_eth_allmulticast_disable ( uint16_t  port_id)

Disable the receipt of all multicast frames by an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
int rte_eth_allmulticast_get ( uint16_t  port_id)

Return the value of allmulticast mode for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (1) if allmulticast is enabled
  • (0) if allmulticast is disabled.
  • (-1) on error
void rte_eth_link_get ( uint16_t  port_id,
struct rte_eth_link link 
)

Retrieve the status (ON/OFF), the speed (in Mbps) and the mode (HALF-DUPLEX or FULL-DUPLEX) of the physical link of an Ethernet device. It might need to wait up to 9 seconds in it.

Parameters
port_idThe port identifier of the Ethernet device.
linkA pointer to an rte_eth_link structure to be filled with the status, the speed and the mode of the Ethernet device link.
Examples:
examples/ethtool/lib/rte_ethtool.c, examples/flow_filtering/main.c, examples/ip_pipeline/init.c, and examples/qos_sched/init.c.
int rte_eth_stats_get ( uint16_t  port_id,
struct rte_eth_stats stats 
)

Retrieve the general I/O statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
statsA pointer to a structure of type rte_eth_stats to be filled with the values of device counters for the following set of statistics:
  • ipackets with the total of successfully received packets.
  • opackets with the total of successfully transmitted packets.
  • ibytes with the total of successfully received bytes.
  • obytes with the total of successfully transmitted bytes.
  • ierrors with the total of erroneous received packets.
  • oerrors with the total of failed transmitted packets.
Returns
Zero if successful. Non-zero otherwise.
Examples:
examples/distributor/main.c, examples/ethtool/lib/rte_ethtool.c, examples/ip_pipeline/pipeline/pipeline_common_fe.c, examples/load_balancer/runtime.c, examples/packet_ordering/main.c, and examples/qos_sched/main.c.
int rte_eth_stats_reset ( uint16_t  port_id)

Reset the general I/O statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (0) if device notified to reset stats.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
int rte_eth_xstats_get_names ( uint16_t  port_id,
struct rte_eth_xstat_name xstats_names,
unsigned int  size 
)

Retrieve names of extended statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
xstats_namesAn rte_eth_xstat_name array of at least size elements to be filled. If set to NULL, the function returns the required number of elements.
sizeThe size of the xstats_names array (number of elements).
Returns
  • A positive value lower or equal to size: success. The return value is the number of entries filled in the stats table.
  • A positive value higher than size: error, the given statistics table is too small. The return value corresponds to the size that should be given to succeed. The entries in the table are not valid and shall not be used by the caller.
  • A negative value on error (invalid port id).
int rte_eth_xstats_get ( uint16_t  port_id,
struct rte_eth_xstat xstats,
unsigned int  n 
)

Retrieve extended statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
xstatsA pointer to a table of structure of type rte_eth_xstat to be filled with device statistics ids and values: id is the index of the name string in xstats_names (see rte_eth_xstats_get_names()), and value is the statistic counter. This parameter can be set to NULL if n is 0.
nThe size of the xstats array (number of elements).
Returns
  • A positive value lower or equal to n: success. The return value is the number of entries filled in the stats table.
  • A positive value higher than n: error, the given statistics table is too small. The return value corresponds to the size that should be given to succeed. The entries in the table are not valid and shall not be used by the caller.
  • A negative value on error (invalid port id).
int rte_eth_xstats_get_names_by_id ( uint16_t  port_id,
struct rte_eth_xstat_name xstats_names,
unsigned int  size,
uint64_t *  ids 
)

Retrieve names of extended statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
xstats_namesAn rte_eth_xstat_name array of at least size elements to be filled. If set to NULL, the function returns the required number of elements.
idsIDs array given by app to retrieve specific statistics
sizeThe size of the xstats_names array (number of elements).
Returns
  • A positive value lower or equal to size: success. The return value is the number of entries filled in the stats table.
  • A positive value higher than size: error, the given statistics table is too small. The return value corresponds to the size that should be given to succeed. The entries in the table are not valid and shall not be used by the caller.
  • A negative value on error (invalid port id).
int rte_eth_xstats_get_by_id ( uint16_t  port_id,
const uint64_t *  ids,
uint64_t *  values,
unsigned int  size 
)

Retrieve extended statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
idsA pointer to an ids array passed by application. This tells which statistics values function should retrieve. This parameter can be set to NULL if size is 0. In this case function will retrieve all avalible statistics.
valuesA pointer to a table to be filled with device statistics values.
sizeThe size of the ids array (number of elements).
Returns
  • A positive value lower or equal to size: success. The return value is the number of entries filled in the stats table.
  • A positive value higher than size: error, the given statistics table is too small. The return value corresponds to the size that should be given to succeed. The entries in the table are not valid and shall not be used by the caller.
  • A negative value on error (invalid port id).
int rte_eth_xstats_get_id_by_name ( uint16_t  port_id,
const char *  xstat_name,
uint64_t *  id 
)

Gets the ID of a statistic from its name.

This function searches for the statistics using string compares, and as such should not be used on the fast-path. For fast-path retrieval of specific statistics, store the ID as provided in id from this function, and pass the ID to rte_eth_xstats_get()

Parameters
port_idThe port to look up statistics from
xstat_nameThe name of the statistic to return
[out]idA pointer to an app-supplied uint64_t which should be set to the ID of the stat if the stat exists.
Returns
0 on success -ENODEV for invalid port_id, -EINVAL if the xstat_name doesn't exist in port_id
void rte_eth_xstats_reset ( uint16_t  port_id)

Reset extended statistics of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
int rte_eth_dev_set_tx_queue_stats_mapping ( uint16_t  port_id,
uint16_t  tx_queue_id,
uint8_t  stat_idx 
)

Set a mapping for the specified transmit queue to the specified per-queue statistics counter.

Parameters
port_idThe port identifier of the Ethernet device.
tx_queue_idThe index of the transmit queue for which a queue stats mapping is required. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
stat_idxThe per-queue packet statistics functionality number that the transmit queue is to be assigned. The value must be in the range [0, RTE_MAX_ETHPORT_QUEUE_STATS_MAPS - 1].
Returns
Zero if successful. Non-zero otherwise.
int rte_eth_dev_set_rx_queue_stats_mapping ( uint16_t  port_id,
uint16_t  rx_queue_id,
uint8_t  stat_idx 
)

Set a mapping for the specified receive queue to the specified per-queue statistics counter.

Parameters
port_idThe port identifier of the Ethernet device.
rx_queue_idThe index of the receive queue for which a queue stats mapping is required. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
stat_idxThe per-queue packet statistics functionality number that the receive queue is to be assigned. The value must be in the range [0, RTE_MAX_ETHPORT_QUEUE_STATS_MAPS - 1].
Returns
Zero if successful. Non-zero otherwise.
void rte_eth_macaddr_get ( uint16_t  port_id,
struct ether_addr mac_addr 
)
int rte_eth_dev_fw_version_get ( uint16_t  port_id,
char *  fw_version,
size_t  fw_size 
)

Retrieve the firmware version of a device.

Parameters
port_idThe port identifier of the device.
fw_versionA pointer to a string array storing the firmware version of a device, the string includes terminating null. This pointer is allocated by caller.
fw_sizeThe size of the string array pointed by fw_version, which should be large enough to store firmware version of the device.
Returns
  • (0) if successful.
  • (-ENOTSUP) if operation is not supported.
  • (-ENODEV) if port_id invalid.
  • (>0) if fw_size is not enough to store firmware version, return the size of the non truncated string.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_get_supported_ptypes ( uint16_t  port_id,
uint32_t  ptype_mask,
uint32_t *  ptypes,
int  num 
)

Retrieve the supported packet types of an Ethernet device.

When a packet type is announced as supported, it must be recognized by the PMD. For instance, if RTE_PTYPE_L2_ETHER, RTE_PTYPE_L2_ETHER_VLAN and RTE_PTYPE_L3_IPV4 are announced, the PMD must return the following packet types for these packets:

  • Ether/IPv4 -> RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4
  • Ether/Vlan/IPv4 -> RTE_PTYPE_L2_ETHER_VLAN | RTE_PTYPE_L3_IPV4
  • Ether/[anything else] -> RTE_PTYPE_L2_ETHER
  • Ether/Vlan/[anything else] -> RTE_PTYPE_L2_ETHER_VLAN

When a packet is received by a PMD, the most precise type must be returned among the ones supported. However a PMD is allowed to set packet type that is not in the supported list, at the condition that it is more precise. Therefore, a PMD announcing no supported packet types can still set a matching packet type in a received packet.

Note
Better to invoke this API after the device is already started or rx burst function is decided, to obtain correct supported ptypes.
if a given PMD does not report what ptypes it supports, then the supported ptype count is reported as 0.
Parameters
port_idThe port identifier of the Ethernet device.
ptype_maskA hint of what kind of packet type which the caller is interested in.
ptypesAn array pointer to store adequate packet types, allocated by caller.
numSize of the array pointed by param ptypes.
Returns
  • (>=0) Number of supported ptypes. If the number of types exceeds num, only num entries will be filled into the ptypes array, but the full count of supported ptypes will be returned.
  • (-ENODEV) if port_id invalid.
Examples:
examples/ip_fragmentation/main.c, examples/l3fwd-power/main.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/l3fwd_lpm.c, and examples/performance-thread/l3fwd-thread/main.c.
int rte_eth_dev_get_mtu ( uint16_t  port_id,
uint16_t *  mtu 
)

Retrieve the MTU of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
mtuA pointer to a uint16_t where the retrieved MTU is to be stored.
Returns
  • (0) if successful.
  • (-ENODEV) if port_id invalid.
int rte_eth_dev_set_mtu ( uint16_t  port_id,
uint16_t  mtu 
)

Change the MTU of an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
mtuA uint16_t for the MTU to be applied.
Returns
  • (0) if successful.
  • (-ENOTSUP) if operation is not supported.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if mtu invalid.
  • (-EBUSY) if operation is not allowed when the port is running
Examples:
examples/ethtool/lib/rte_ethtool.c, and examples/ip_pipeline/init.c.
int rte_eth_dev_vlan_filter ( uint16_t  port_id,
uint16_t  vlan_id,
int  on 
)

Enable/Disable hardware filtering by an Ethernet device of received VLAN packets tagged with a given VLAN Tag Identifier.

Parameters
port_idThe port identifier of the Ethernet device.
vlan_idThe VLAN Tag Identifier whose filtering must be enabled or disabled.
onIf > 0, enable VLAN filtering of VLAN packets tagged with vlan_id. Otherwise, disable VLAN filtering of VLAN packets tagged with vlan_id.
Returns
  • (0) if successful.
  • (-ENOSUP) if hardware-assisted VLAN filtering not configured.
  • (-ENODEV) if port_id invalid.
  • (-ENOSYS) if VLAN filtering on port_id disabled.
  • (-EINVAL) if vlan_id > 4095.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_set_vlan_strip_on_queue ( uint16_t  port_id,
uint16_t  rx_queue_id,
int  on 
)

Enable/Disable hardware VLAN Strip by a rx queue of an Ethernet device. 82599/X540/X550 can support VLAN stripping at the rx queue level

Parameters
port_idThe port identifier of the Ethernet device.
rx_queue_idThe index of the receive queue for which a queue stats mapping is required. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
onIf 1, Enable VLAN Stripping of the receive queue of the Ethernet port. If 0, Disable VLAN Stripping of the receive queue of the Ethernet port.
Returns
  • (0) if successful.
  • (-ENOSUP) if hardware-assisted VLAN stripping not configured.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if rx_queue_id invalid.
Examples:
examples/vhost/main.c.
int rte_eth_dev_set_vlan_ether_type ( uint16_t  port_id,
enum rte_vlan_type  vlan_type,
uint16_t  tag_type 
)

Set the Outer VLAN Ether Type by an Ethernet device, it can be inserted to the VLAN Header. This is a register setup available on some Intel NIC, not but all, please check the data sheet for availability.

Parameters
port_idThe port identifier of the Ethernet device.
vlan_typeThe vlan type.
tag_typeThe Tag Protocol ID
Returns
  • (0) if successful.
  • (-ENOSUP) if hardware-assisted VLAN TPID setup is not supported.
  • (-ENODEV) if port_id invalid.
int rte_eth_dev_set_vlan_offload ( uint16_t  port_id,
int  offload_mask 
)

Set VLAN offload configuration on an Ethernet device Enable/Disable Extended VLAN by an Ethernet device, This is a register setup available on some Intel NIC, not but all, please check the data sheet for availability. Enable/Disable VLAN Strip can be done on rx queue for certain NIC, but here the configuration is applied on the port level.

Parameters
port_idThe port identifier of the Ethernet device.
offload_maskThe VLAN Offload bit mask can be mixed use with "OR" ETH_VLAN_STRIP_OFFLOAD ETH_VLAN_FILTER_OFFLOAD ETH_VLAN_EXTEND_OFFLOAD
Returns
  • (0) if successful.
  • (-ENOSUP) if hardware-assisted VLAN filtering not configured.
  • (-ENODEV) if port_id invalid.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_get_vlan_offload ( uint16_t  port_id)

Read VLAN Offload configuration from an Ethernet device

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (>0) if successful. Bit mask to indicate ETH_VLAN_STRIP_OFFLOAD ETH_VLAN_FILTER_OFFLOAD ETH_VLAN_EXTEND_OFFLOAD
  • (-ENODEV) if port_id invalid.
int rte_eth_dev_set_vlan_pvid ( uint16_t  port_id,
uint16_t  pvid,
int  on 
)

Set port based TX VLAN insertion on or off.

Parameters
port_idThe port identifier of the Ethernet device.
pvidPort based TX VLAN identifier together with user priority.
onTurn on or off the port based TX VLAN insertion.
Returns
  • (0) if successful.
  • negative if failed.
static uint16_t rte_eth_rx_burst ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_mbuf **  rx_pkts,
const uint16_t  nb_pkts 
)
inlinestatic

Retrieve a burst of input packets from a receive queue of an Ethernet device. The retrieved packets are stored in rte_mbuf structures whose pointers are supplied in the rx_pkts array.

The rte_eth_rx_burst() function loops, parsing the RX ring of the receive queue, up to nb_pkts packets, and for each completed RX descriptor in the ring, it performs the following operations:

  • Initialize the rte_mbuf data structure associated with the RX descriptor according to the information provided by the NIC into that RX descriptor.
  • Store the rte_mbuf data structure into the next entry of the rx_pkts array.
  • Replenish the RX descriptor with a new rte_mbuf buffer allocated from the memory pool associated with the receive queue at initialization time.

When retrieving an input packet that was scattered by the controller into multiple receive descriptors, the rte_eth_rx_burst() function appends the associated rte_mbuf buffers to the first buffer of the packet.

The rte_eth_rx_burst() function returns the number of packets actually retrieved, which is the number of rte_mbuf data structures effectively supplied into the rx_pkts array. A return value equal to nb_pkts indicates that the RX queue contained at least rx_pkts packets, and this is likely to signify that other received packets remain in the input queue. Applications implementing a "retrieve as much received packets as possible" policy can check this specific case and keep invoking the rte_eth_rx_burst() function until a value less than nb_pkts is returned.

This receive method has the following advantages:

  • It allows a run-to-completion network stack engine to retrieve and to immediately process received packets in a fast burst-oriented approach, avoiding the overhead of unnecessary intermediate packet queue/dequeue operations.
  • Conversely, it also allows an asynchronous-oriented processing method to retrieve bursts of received packets and to immediately queue them for further parallel processing by another logical core, for instance. However, instead of having received packets being individually queued by the driver, this approach allows the caller of the rte_eth_rx_burst() function to queue a burst of retrieved packets at a time and therefore dramatically reduce the cost of enqueue/dequeue operations per packet.
  • It allows the rte_eth_rx_burst() function of the driver to take advantage of burst-oriented hardware features (CPU cache, prefetch instructions, and so on) to minimize the number of CPU cycles per packet.

To summarize, the proposed receive API enables many burst-oriented optimizations in both synchronous and asynchronous packet processing environments with no overhead in both cases.

The rte_eth_rx_burst() function does not provide any error notification to avoid the corresponding overhead. As a hint, the upper-level application might check the status of the device link once being systematically returned a 0 value for a given number of tries.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the receive queue from which to retrieve input packets. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
rx_pktsThe address of an array of pointers to rte_mbuf structures that must be large enough to store nb_pkts pointers in it.
nb_pktsThe maximum number of packets to retrieve.
Returns
The number of packets actually retrieved, which is the number of pointers to rte_mbuf structures effectively supplied to the rx_pkts array.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/flow_filtering/main.c, examples/ip_fragmentation/main.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/l3fwd_em.c, examples/l3fwd/l3fwd_lpm.c, examples/link_status_interrupt/main.c, examples/load_balancer/runtime.c, examples/multi_process/client_server_mp/mp_server/main.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/app_thread.c, examples/quota_watermark/qw/main.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/main.c, examples/skeleton/basicfwd.c, examples/tep_termination/main.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Definition at line 2883 of file rte_ethdev.h.

static int rte_eth_rx_queue_count ( uint16_t  port_id,
uint16_t  queue_id 
)
inlinestatic

Get the number of used descriptors of a rx queue

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue id on the specific port.
Returns
The number of used descriptors in the specific queue, or: (-EINVAL) if port_id or queue_id is invalid (-ENOTSUP) if the device does not support this function

Definition at line 2928 of file rte_ethdev.h.

static int rte_eth_rx_descriptor_done ( uint16_t  port_id,
uint16_t  queue_id,
uint16_t  offset 
)
inlinestatic

Check if the DD bit of the specific RX descriptor in the queue has been set

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue id on the specific port.
offsetThe offset of the descriptor ID from tail.
Returns
  • (1) if the specific DD bit is set.
  • (0) if the specific DD bit is not set.
  • (-ENODEV) if port_id invalid.
  • (-ENOTSUP) if the device does not support this function
Examples:
examples/l3fwd-power/main.c.

Definition at line 2957 of file rte_ethdev.h.

static int rte_eth_rx_descriptor_status ( uint16_t  port_id,
uint16_t  queue_id,
uint16_t  offset 
)
inlinestatic

Check the status of a Rx descriptor in the queue

It should be called in a similar context than the Rx function:

  • on a dataplane core
  • not concurrently on the same queue

Since it's a dataplane function, no check is performed on port_id and queue_id. The caller must therefore ensure that the port is enabled and the queue is configured and running.

Note: accessing to a random descriptor in the ring may trigger cache misses and have a performance impact.

Parameters
port_idA valid port identifier of the Ethernet device which.
queue_idA valid Rx queue identifier on this port.
offsetThe offset of the descriptor starting from tail (0 is the next packet to be received by the driver).
Returns
  • (RTE_ETH_RX_DESC_AVAIL): Descriptor is available for the hardware to receive a packet.
  • (RTE_ETH_RX_DESC_DONE): Descriptor is done, it is filled by hw, but not yet processed by the driver (i.e. in the receive queue).
  • (RTE_ETH_RX_DESC_UNAVAIL): Descriptor is unavailable, either hold by the driver and not yet returned to hw, or reserved by the hw.
  • (-EINVAL) bad descriptor offset.
  • (-ENOTSUP) if the device does not support this function.
  • (-ENODEV) bad port or queue (only if compiled with debug).

Definition at line 3004 of file rte_ethdev.h.

static int rte_eth_tx_descriptor_status ( uint16_t  port_id,
uint16_t  queue_id,
uint16_t  offset 
)
inlinestatic

Check the status of a Tx descriptor in the queue.

It should be called in a similar context than the Tx function:

  • on a dataplane core
  • not concurrently on the same queue

Since it's a dataplane function, no check is performed on port_id and queue_id. The caller must therefore ensure that the port is enabled and the queue is configured and running.

Note: accessing to a random descriptor in the ring may trigger cache misses and have a performance impact.

Parameters
port_idA valid port identifier of the Ethernet device which.
queue_idA valid Tx queue identifier on this port.
offsetThe offset of the descriptor starting from tail (0 is the place where the next packet will be send).
Returns
  • (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e. in the transmit queue.
  • (RTE_ETH_TX_DESC_DONE) Hardware is done with this descriptor, it can be reused by the driver.
  • (RTE_ETH_TX_DESC_UNAVAIL): Descriptor is unavailable, reserved by the driver or the hardware.
  • (-EINVAL) bad descriptor offset.
  • (-ENOTSUP) if the device does not support this function.
  • (-ENODEV) bad port or queue (only if compiled with debug).

Definition at line 3061 of file rte_ethdev.h.

static uint16_t rte_eth_tx_burst ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_mbuf **  tx_pkts,
uint16_t  nb_pkts 
)
inlinestatic

Send a burst of output packets on a transmit queue of an Ethernet device.

The rte_eth_tx_burst() function is invoked to transmit output packets on the output queue queue_id of the Ethernet device designated by its port_id. The nb_pkts parameter is the number of packets to send which are supplied in the tx_pkts array of rte_mbuf structures, each of them allocated from a pool created with rte_pktmbuf_pool_create(). The rte_eth_tx_burst() function loops, sending nb_pkts packets, up to the number of transmit descriptors available in the TX ring of the transmit queue. For each packet to send, the rte_eth_tx_burst() function performs the following operations:

  • Pick up the next available descriptor in the transmit ring.
  • Free the network buffer previously sent with that descriptor, if any.
  • Initialize the transmit descriptor with the information provided in the *rte_mbuf data structure.

In the case of a segmented packet composed of a list of rte_mbuf buffers, the rte_eth_tx_burst() function uses several transmit descriptors of the ring.

The rte_eth_tx_burst() function returns the number of packets it actually sent. A return value equal to nb_pkts means that all packets have been sent, and this is likely to signify that other output packets could be immediately transmitted again. Applications that implement a "send as many packets to transmit as possible" policy can check this specific case and keep invoking the rte_eth_tx_burst() function until a value less than nb_pkts is returned.

It is the responsibility of the rte_eth_tx_burst() function to transparently free the memory buffers of packets previously sent. This feature is driven by the tx_free_thresh value supplied to the rte_eth_dev_configure() function at device configuration time. When the number of free TX descriptors drops below this threshold, the rte_eth_tx_burst() function must [attempt to] free the rte_mbuf buffers of those packets whose transmission was effectively completed.

If the PMD is DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads can invoke this function concurrently on the same tx queue without SW lock.

See Also
rte_eth_dev_info_get, struct rte_eth_txconf::txq_flags
Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the transmit queue through which output packets must be sent. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
tx_pktsThe address of an array of nb_pkts pointers to rte_mbuf structures which contain the output packets.
nb_pktsThe maximum number of packets to transmit.
Returns
The number of output packets actually stored in transmit descriptors of the transmit ring. The return value can be less than the value of the tx_pkts parameter when the transmit ring is full or has been filled up.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/eventdev_pipeline_sw_pmd/main.c, examples/exception_path/main.c, examples/flow_classify/flow_classify.c, examples/ip_fragmentation/main.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l3fwd-vf/main.c, examples/load_balancer/runtime.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_sched/app_thread.c, examples/quota_watermark/qw/main.c, examples/rxtx_callbacks/main.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.

Definition at line 3145 of file rte_ethdev.h.

static uint16_t rte_eth_tx_prepare ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_mbuf **  tx_pkts,
uint16_t  nb_pkts 
)
inlinestatic
Warning
EXPERIMENTAL: this API may change without prior notice

Process a burst of output packets on a transmit queue of an Ethernet device.

The rte_eth_tx_prepare() function is invoked to prepare output packets to be transmitted on the output queue queue_id of the Ethernet device designated by its port_id. The nb_pkts parameter is the number of packets to be prepared which are supplied in the tx_pkts array of rte_mbuf structures, each of them allocated from a pool created with rte_pktmbuf_pool_create(). For each packet to send, the rte_eth_tx_prepare() function performs the following operations:

  • Check if packet meets devices requirements for tx offloads.
  • Check limitations about number of segments.
  • Check additional requirements when debug is enabled.
  • Update and/or reset required checksums when tx offload is set for packet.

Since this function can modify packet data, provided mbufs must be safely writable (e.g. modified data cannot be in shared segment).

The rte_eth_tx_prepare() function returns the number of packets ready to be sent. A return value equal to nb_pkts means that all packets are valid and ready to be sent, otherwise stops processing on the first invalid packet and leaves the rest packets untouched.

When this functionality is not implemented in the driver, all packets are are returned untouched.

Parameters
port_idThe port identifier of the Ethernet device. The value must be a valid port id.
queue_idThe index of the transmit queue through which output packets must be sent. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
tx_pktsThe address of an array of nb_pkts pointers to rte_mbuf structures which contain the output packets.
nb_pktsThe maximum number of packets to process.
Returns
The number of packets correct and ready to be sent. The return value can be less than the value of the tx_pkts parameter when some packet doesn't meet devices requirements with rte_errno set appropriately:
  • -EINVAL: offload flags are not correctly set
  • -ENOTSUP: the offload feature is not supported by the hardware

Definition at line 3234 of file rte_ethdev.h.

static uint16_t rte_eth_tx_buffer_flush ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_dev_tx_buffer buffer 
)
inlinestatic

Send any packets queued up for transmission on a port and HW queue

This causes an explicit flush of packets previously buffered via the rte_eth_tx_buffer() function. It returns the number of packets successfully sent to the NIC, and calls the error callback for any unsent packets. Unless explicitly set up otherwise, the default callback simply frees the unsent packets back to the owning mempool.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the transmit queue through which output packets must be sent. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
bufferBuffer of packets to be transmit.
Returns
The number of packets successfully sent to the Ethernet device. The error callback is called for any packets which could not be sent.
Examples:
examples/eventdev_pipeline_sw_pmd/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/l2fwd_fork/main.c, examples/qos_meter/main.c, and examples/server_node_efd/node/node.c.

Definition at line 3346 of file rte_ethdev.h.

static __rte_always_inline uint16_t rte_eth_tx_buffer ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_dev_tx_buffer buffer,
struct rte_mbuf tx_pkt 
)
static

Buffer a single packet for future transmission on a port and queue

This function takes a single mbuf/packet and buffers it for later transmission on the particular port and queue specified. Once the buffer is full of packets, an attempt will be made to transmit all the buffered packets. In case of error, where not all packets can be transmitted, a callback is called with the unsent packets as a parameter. If no callback is explicitly set up, the unsent packets are just freed back to the owning mempool. The function returns the number of packets actually sent i.e. 0 if no buffer flush occurred, otherwise the number of packets successfully flushed

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the transmit queue through which output packets must be sent. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
bufferBuffer used to collect packets to be sent.
tx_pktPointer to the packet mbuf to be sent.
Returns
0 = packet has been buffered for later transmission N > 0 = packet has been buffered, and the buffer was subsequently flushed, causing N packets to be sent, and the error callback to be called for the rest.
Examples:
examples/eventdev_pipeline_sw_pmd/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/l2fwd_fork/main.c, examples/packet_ordering/main.c, examples/qos_meter/main.c, and examples/server_node_efd/node/node.c.

Definition at line 3398 of file rte_ethdev.h.

int rte_eth_tx_buffer_set_err_callback ( struct rte_eth_dev_tx_buffer buffer,
buffer_tx_error_fn  callback,
void *  userdata 
)

Configure a callback for buffered packets which cannot be sent

Register a specific callback to be called when an attempt is made to send all packets buffered on an ethernet port, but not all packets can successfully be sent. The callback registered here will be called only from calls to rte_eth_tx_buffer() and rte_eth_tx_buffer_flush() APIs. The default callback configured for each queue by default just frees the packets back to the calling mempool. If additional behaviour is required, for example, to count dropped packets, or to retry transmission of packets which cannot be sent, this function should be used to register a suitable callback function to implement the desired behaviour. The example callback "rte_eth_count_unsent_packet_callback()" is also provided as reference.

Parameters
bufferThe port identifier of the Ethernet device.
callbackThe function to be used as the callback.
userdataArbitrary parameter to be passed to the callback function
Returns
0 on success, or -1 on error with rte_errno set appropriately
Examples:
examples/eventdev_pipeline_sw_pmd/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/link_status_interrupt/main.c, examples/multi_process/client_server_mp/mp_client/client.c, examples/multi_process/l2fwd_fork/main.c, examples/packet_ordering/main.c, and examples/server_node_efd/node/node.c.
void rte_eth_tx_buffer_drop_callback ( struct rte_mbuf **  pkts,
uint16_t  unsent,
void *  userdata 
)

Callback function for silently dropping unsent buffered packets.

This function can be passed to rte_eth_tx_buffer_set_err_callback() to adjust the default behavior when buffered packets cannot be sent. This function drops any unsent packets silently and is used by tx buffered operations as default behavior.

NOTE: this function should not be called directly, instead it should be used as a callback for packet buffering.

NOTE: when configuring this function as a callback with rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter should point to an uint64_t value.

Parameters
pktsThe previously buffered packets which could not be sent
unsentThe number of unsent packets in the pkts array
userdataNot used
void rte_eth_tx_buffer_count_callback ( struct rte_mbuf **  pkts,
uint16_t  unsent,
void *  userdata 
)

Callback function for tracking unsent buffered packets.

This function can be passed to rte_eth_tx_buffer_set_err_callback() to adjust the default behavior when buffered packets cannot be sent. This function drops any unsent packets, but also updates a user-supplied counter to track the overall number of packets dropped. The counter should be an uint64_t variable.

NOTE: this function should not be called directly, instead it should be used as a callback for packet buffering.

NOTE: when configuring this function as a callback with rte_eth_tx_buffer_set_err_callback(), the final, userdata parameter should point to an uint64_t value.

Parameters
pktsThe previously buffered packets which could not be sent
unsentThe number of unsent packets in the pkts array
userdataPointer to an uint64_t value, which will be incremented by unsent
Examples:
examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/link_status_interrupt/main.c, and examples/multi_process/l2fwd_fork/main.c.
int rte_eth_tx_done_cleanup ( uint16_t  port_id,
uint16_t  queue_id,
uint32_t  free_cnt 
)

Request the driver to free mbufs currently cached by the driver. The driver will only free the mbuf if it is no longer in use. It is the application's responsibity to ensure rte_eth_tx_buffer_flush(..) is called if needed.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the transmit queue through which output packets must be sent. The value must be in the range [0, nb_tx_queue - 1] previously supplied to rte_eth_dev_configure().
free_cntMaximum number of packets to free. Use 0 to indicate all possible packets should be freed. Note that a packet may be using multiple mbufs.
Returns
Failure: < 0 -ENODEV: Invalid interface -ENOTSUP: Driver does not support function Success: >= 0 0-n: Number of packets freed. More packets may still remain in ring that are in use.
int rte_eth_dev_callback_register ( uint16_t  port_id,
enum rte_eth_event_type  event,
rte_eth_dev_cb_fn  cb_fn,
void *  cb_arg 
)

Register a callback function for specific port id.

Parameters
port_idPort id.
eventEvent interested.
cb_fnUser supplied callback function to be called.
cb_argPointer to the parameters for the registered callback.
Returns
  • On success, zero.
  • On failure, a negative value.
Examples:
examples/link_status_interrupt/main.c.
int rte_eth_dev_callback_unregister ( uint16_t  port_id,
enum rte_eth_event_type  event,
rte_eth_dev_cb_fn  cb_fn,
void *  cb_arg 
)

Unregister a callback function for specific port id.

Parameters
port_idPort id.
eventEvent interested.
cb_fnUser supplied callback function to be called.
cb_argPointer to the parameters for the registered callback. -1 means to remove all for the same callback address and same event.
Returns
  • On success, zero.
  • On failure, a negative value.
int rte_eth_dev_rx_intr_enable ( uint16_t  port_id,
uint16_t  queue_id 
)

When there is no rx packet coming in Rx Queue for a long time, we can sleep lcore related to RX Queue for power saving, and enable rx interrupt to be triggered when Rx packet arrives.

The rte_eth_dev_rx_intr_enable() function enables rx queue interrupt on specific rx queue of a port.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the receive queue from which to retrieve input packets. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • (0) if successful.
  • (-ENOTSUP) if underlying hardware OR driver doesn't support that operation.
  • (-ENODEV) if port_id invalid.
Examples:
examples/l3fwd-power/main.c.
int rte_eth_dev_rx_intr_disable ( uint16_t  port_id,
uint16_t  queue_id 
)

When lcore wakes up from rx interrupt indicating packet coming, disable rx interrupt and returns to polling mode.

The rte_eth_dev_rx_intr_disable() function disables rx queue interrupt on specific rx queue of a port.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the receive queue from which to retrieve input packets. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
Returns
  • (0) if successful.
  • (-ENOTSUP) if underlying hardware OR driver doesn't support that operation.
  • (-ENODEV) if port_id invalid.
Examples:
examples/l3fwd-power/main.c.
int rte_eth_dev_rx_intr_ctl ( uint16_t  port_id,
int  epfd,
int  op,
void *  data 
)

RX Interrupt control per port.

Parameters
port_idThe port identifier of the Ethernet device.
epfdEpoll instance fd which the intr vector associated to. Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
opThe operation be performed for the vector. Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
dataUser raw data.
Returns
  • On success, zero.
  • On failure, a negative value.
int rte_eth_dev_rx_intr_ctl_q ( uint16_t  port_id,
uint16_t  queue_id,
int  epfd,
int  op,
void *  data 
)

RX Interrupt control per queue.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe index of the receive queue from which to retrieve input packets. The value must be in the range [0, nb_rx_queue - 1] previously supplied to rte_eth_dev_configure().
epfdEpoll instance fd which the intr vector associated to. Using RTE_EPOLL_PER_THREAD allows to use per thread epoll instance.
opThe operation be performed for the vector. Operation type of {RTE_INTR_EVENT_ADD, RTE_INTR_EVENT_DEL}.
dataUser raw data.
Returns
  • On success, zero.
  • On failure, a negative value.
Examples:
examples/l3fwd-power/main.c.
int rte_eth_led_on ( uint16_t  port_id)

Turn on the LED on the Ethernet device. This function turns on the LED on the Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (0) if successful.
  • (-ENOTSUP) if underlying hardware OR driver doesn't support that operation.
  • (-ENODEV) if port_id invalid.
int rte_eth_led_off ( uint16_t  port_id)

Turn off the LED on the Ethernet device. This function turns off the LED on the Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (0) if successful.
  • (-ENOTSUP) if underlying hardware OR driver doesn't support that operation.
  • (-ENODEV) if port_id invalid.
int rte_eth_dev_flow_ctrl_get ( uint16_t  port_id,
struct rte_eth_fc_conf fc_conf 
)

Get current status of the Ethernet link flow control for Ethernet device

Parameters
port_idThe port identifier of the Ethernet device.
fc_confThe pointer to the structure where to store the flow control parameters.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support flow control.
  • (-ENODEV) if port_id invalid.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_flow_ctrl_set ( uint16_t  port_id,
struct rte_eth_fc_conf fc_conf 
)

Configure the Ethernet link flow control for Ethernet device

Parameters
port_idThe port identifier of the Ethernet device.
fc_confThe pointer to the structure of the flow control parameters.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support flow control mode.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter
  • (-EIO) if flow control setup failure
Examples:
examples/ethtool/lib/rte_ethtool.c, and examples/quota_watermark/qw/init.c.
int rte_eth_dev_priority_flow_ctrl_set ( uint16_t  port_id,
struct rte_eth_pfc_conf pfc_conf 
)

Configure the Ethernet priority flow control under DCB environment for Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
pfc_confThe pointer to the structure of the priority flow control parameters.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support priority flow control mode.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter
  • (-EIO) if flow control setup failure
int rte_eth_dev_mac_addr_add ( uint16_t  port,
struct ether_addr mac_addr,
uint32_t  pool 
)

Add a MAC address to an internal array of addresses used to enable whitelist filtering to accept packets only if the destination MAC address matches.

Parameters
portThe port identifier of the Ethernet device.
mac_addrThe MAC address to add.
poolVMDq pool index to associate address with (if VMDq is enabled). If VMDq is not enabled, this should be set to 0.
Returns
  • (0) if successfully added or mac_addr" was already added.
  • (-ENOTSUP) if hardware doesn't support this feature.
  • (-ENODEV) if *port is invalid.
  • (-ENOSPC) if no more MAC addresses can be added.
  • (-EINVAL) if MAC address is invalid.
Examples:
examples/vhost/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_dev_mac_addr_remove ( uint16_t  port,
struct ether_addr mac_addr 
)

Remove a MAC address from the internal array of addresses.

Parameters
portThe port identifier of the Ethernet device.
mac_addrMAC address to remove.
Returns
  • (0) if successful, or mac_addr didn't exist.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port invalid.
  • (-EADDRINUSE) if attempting to remove the default MAC address
Examples:
examples/vhost/main.c.
int rte_eth_dev_default_mac_addr_set ( uint16_t  port,
struct ether_addr mac_addr 
)

Set the default MAC address.

Parameters
portThe port identifier of the Ethernet device.
mac_addrNew default MAC address.
Returns
  • (0) if successful, or mac_addr didn't exist.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port invalid.
  • (-EINVAL) if MAC address is invalid.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_rss_reta_update ( uint16_t  port,
struct rte_eth_rss_reta_entry64 reta_conf,
uint16_t  reta_size 
)

Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.

Parameters
portThe port identifier of the Ethernet device.
reta_confRETA to update.
reta_sizeRedirection table size. The table size can be queried by rte_eth_dev_info_get().
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-EINVAL) if bad parameter.
Examples:
examples/ip_pipeline/init.c.
int rte_eth_dev_rss_reta_query ( uint16_t  port,
struct rte_eth_rss_reta_entry64 reta_conf,
uint16_t  reta_size 
)

Query Redirection Table(RETA) of Receive Side Scaling of Ethernet device.

Parameters
portThe port identifier of the Ethernet device.
reta_confRETA to query.
reta_sizeRedirection table size. The table size can be queried by rte_eth_dev_info_get().
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-EINVAL) if bad parameter.
int rte_eth_dev_uc_hash_table_set ( uint16_t  port,
struct ether_addr addr,
uint8_t  on 
)

Updates unicast hash table for receiving packet with the given destination MAC address, and the packet is routed to all VFs for which the RX mode is accept packets that match the unicast hash table.

Parameters
portThe port identifier of the Ethernet device.
addrUnicast MAC address.
on1 - Set an unicast hash bit for receiving packets with the MAC address. 0 - Clear an unicast hash bit.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter.
int rte_eth_dev_uc_all_hash_table_set ( uint16_t  port,
uint8_t  on 
)

Updates all unicast hash bitmaps for receiving packet with any Unicast Ethernet MAC addresses,the packet is routed to all VFs for which the RX mode is accept packets that match the unicast hash table.

Parameters
portThe port identifier of the Ethernet device.
on1 - Set all unicast hash bitmaps for receiving all the Ethernet MAC addresses 0 - Clear all unicast hash bitmaps
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter.
int rte_eth_mirror_rule_set ( uint16_t  port_id,
struct rte_eth_mirror_conf mirror_conf,
uint8_t  rule_id,
uint8_t  on 
)

Set a traffic mirroring rule on an Ethernet device

Parameters
port_idThe port identifier of the Ethernet device.
mirror_confThe pointer to the traffic mirroring structure describing the mirroring rule. The rte_eth_vm_mirror_conf structure includes the type of mirroring rule, destination pool and the value of rule if enable vlan or pool mirroring.
rule_idThe index of traffic mirroring rule, we support four separated rules.
on1 - Enable a mirroring rule. 0 - Disable a mirroring rule.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support this feature.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if the mr_conf information is not correct.
int rte_eth_mirror_rule_reset ( uint16_t  port_id,
uint8_t  rule_id 
)

Reset a traffic mirroring rule on an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
rule_idThe index of traffic mirroring rule, we support four separated rules.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support this feature.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter.
int rte_eth_set_queue_rate_limit ( uint16_t  port_id,
uint16_t  queue_idx,
uint16_t  tx_rate 
)

Set the rate limitation for a queue on an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idxThe queue id.
tx_rateThe tx rate in Mbps. Allocated from the total port link speed.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support this feature.
  • (-ENODEV) if port_id invalid.
  • (-EINVAL) if bad parameter.
int rte_eth_dev_rss_hash_update ( uint16_t  port_id,
struct rte_eth_rss_conf rss_conf 
)

Configuration of Receive Side Scaling hash computation of Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
rss_confThe new configuration to use for RSS hash computation on the port.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support.
  • (-EINVAL) if bad parameter.
int rte_eth_dev_rss_hash_conf_get ( uint16_t  port_id,
struct rte_eth_rss_conf rss_conf 
)

Retrieve current configuration of Receive Side Scaling hash computation of Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
rss_confWhere to store the current RSS hash configuration of the Ethernet device.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support RSS.
int rte_eth_dev_udp_tunnel_port_add ( uint16_t  port_id,
struct rte_eth_udp_tunnel tunnel_udp 
)

Add UDP tunneling port for a specific type of tunnel. The packets with this UDP port will be identified as this type of tunnel. Before enabling any offloading function for a tunnel, users can call this API to change or add more UDP port for the tunnel. So the offloading function can take effect on the packets with the specific UDP port.

Parameters
port_idThe port identifier of the Ethernet device.
tunnel_udpUDP tunneling configuration.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support tunnel type.
Examples:
examples/tep_termination/vxlan_setup.c.
int rte_eth_dev_udp_tunnel_port_delete ( uint16_t  port_id,
struct rte_eth_udp_tunnel tunnel_udp 
)

Delete UDP tunneling port a specific type of tunnel. The packets with this UDP port will not be identified as this type of tunnel any more. Before enabling any offloading function for a tunnel, users can call this API to delete a UDP port for the tunnel. So the offloading function will not take effect on the packets with the specific UDP port.

Parameters
port_idThe port identifier of the Ethernet device.
tunnel_udpUDP tunneling configuration.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support tunnel type.
int rte_eth_dev_filter_supported ( uint16_t  port_id,
enum rte_filter_type  filter_type 
)

Check whether the filter type is supported on an Ethernet device. All the supported filter types are defined in 'rte_eth_ctrl.h'.

Parameters
port_idThe port identifier of the Ethernet device.
filter_typeFilter type.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support this filter type.
  • (-ENODEV) if port_id invalid.
int rte_eth_dev_filter_ctrl ( uint16_t  port_id,
enum rte_filter_type  filter_type,
enum rte_filter_op  filter_op,
void *  arg 
)

Take operations to assigned filter type on an Ethernet device. All the supported operations and filter types are defined in 'rte_eth_ctrl.h'.

Parameters
port_idThe port identifier of the Ethernet device.
filter_typeFilter type.
filter_opType of operation.
argA pointer to arguments defined specifically for the operation.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • others depends on the specific operations implementation.
Examples:
examples/ip_pipeline/init.c, and examples/tep_termination/vxlan_setup.c.
int rte_eth_dev_get_dcb_info ( uint16_t  port_id,
struct rte_eth_dcb_info dcb_info 
)

Get DCB information on an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
dcb_infodcb information.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support.
void* rte_eth_add_rx_callback ( uint16_t  port_id,
uint16_t  queue_id,
rte_rx_callback_fn  fn,
void *  user_param 
)

Add a callback to be called on packet RX on a given port and queue.

This API configures a function to be called for each burst of packets received on a given NIC port queue. The return value is a pointer that can be used to later remove the callback using rte_eth_remove_rx_callback().

Multiple functions are called in the order that they are added.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue on the Ethernet device on which the callback is to be added.
fnThe callback function
user_paramA generic pointer parameter which will be passed to each invocation of the callback function on this port and queue.
Returns
NULL on error. On success, a pointer value which can later be used to remove the callback.
Examples:
examples/ip_fragmentation/main.c, examples/l3fwd-power/main.c, examples/l3fwd/main.c, examples/performance-thread/l3fwd-thread/main.c, and examples/rxtx_callbacks/main.c.
void* rte_eth_add_first_rx_callback ( uint16_t  port_id,
uint16_t  queue_id,
rte_rx_callback_fn  fn,
void *  user_param 
)

Add a callback that must be called first on packet RX on a given port and queue.

This API configures a first function to be called for each burst of packets received on a given NIC port queue. The return value is a pointer that can be used to later remove the callback using rte_eth_remove_rx_callback().

Multiple functions are called in the order that they are added.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue on the Ethernet device on which the callback is to be added.
fnThe callback function
user_paramA generic pointer parameter which will be passed to each invocation of the callback function on this port and queue.
Returns
NULL on error. On success, a pointer value which can later be used to remove the callback.
void* rte_eth_add_tx_callback ( uint16_t  port_id,
uint16_t  queue_id,
rte_tx_callback_fn  fn,
void *  user_param 
)

Add a callback to be called on packet TX on a given port and queue.

This API configures a function to be called for each burst of packets sent on a given NIC port queue. The return value is a pointer that can be used to later remove the callback using rte_eth_remove_tx_callback().

Multiple functions are called in the order that they are added.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue on the Ethernet device on which the callback is to be added.
fnThe callback function
user_paramA generic pointer parameter which will be passed to each invocation of the callback function on this port and queue.
Returns
NULL on error. On success, a pointer value which can later be used to remove the callback.
Examples:
examples/rxtx_callbacks/main.c.
int rte_eth_remove_rx_callback ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_rxtx_callback *  user_cb 
)

Remove an RX packet callback from a given port and queue.

This function is used to removed callbacks that were added to a NIC port queue using rte_eth_add_rx_callback().

Note: the callback is removed from the callback list but it isn't freed since the it may still be in use. The memory for the callback can be subsequently freed back by the application by calling rte_free():

  • Immediately - if the port is stopped, or the user knows that no callbacks are in flight e.g. if called from the thread doing RX/TX on that queue.
  • After a short delay - where the delay is sufficient to allow any in-flight callbacks to complete.
Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue on the Ethernet device from which the callback is to be removed.
user_cbUser supplied callback created via rte_eth_add_rx_callback().
Returns
  • 0: Success. Callback was removed.
  • -ENOTSUP: Callback support is not available.
  • -EINVAL: The port_id or the queue_id is out of range, or the callback is NULL or not found for the port/queue.
int rte_eth_remove_tx_callback ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_rxtx_callback *  user_cb 
)

Remove a TX packet callback from a given port and queue.

This function is used to removed callbacks that were added to a NIC port queue using rte_eth_add_tx_callback().

Note: the callback is removed from the callback list but it isn't freed since the it may still be in use. The memory for the callback can be subsequently freed back by the application by calling rte_free():

  • Immediately - if the port is stopped, or the user knows that no callbacks are in flight e.g. if called from the thread doing RX/TX on that queue.
  • After a short delay - where the delay is sufficient to allow any in-flight callbacks to complete.
Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe queue on the Ethernet device from which the callback is to be removed.
user_cbUser supplied callback created via rte_eth_add_tx_callback().
Returns
  • 0: Success. Callback was removed.
  • -ENOTSUP: Callback support is not available.
  • -EINVAL: The port_id or the queue_id is out of range, or the callback is NULL or not found for the port/queue.
int rte_eth_rx_queue_info_get ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_rxq_info qinfo 
)

Retrieve information about given port's RX queue.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe RX queue on the Ethernet device for which information will be retrieved.
qinfoA pointer to a structure of type rte_eth_rxq_info_info to be filled with the information of the Ethernet device.
Returns
  • 0: Success
  • -ENOTSUP: routine is not supported by the device PMD.
  • -EINVAL: The port_id or the queue_id is out of range.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_tx_queue_info_get ( uint16_t  port_id,
uint16_t  queue_id,
struct rte_eth_txq_info qinfo 
)

Retrieve information about given port's TX queue.

Parameters
port_idThe port identifier of the Ethernet device.
queue_idThe TX queue on the Ethernet device for which information will be retrieved.
qinfoA pointer to a structure of type rte_eth_txq_info_info to be filled with the information of the Ethernet device.
Returns
  • 0: Success
  • -ENOTSUP: routine is not supported by the device PMD.
  • -EINVAL: The port_id or the queue_id is out of range.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_get_reg_info ( uint16_t  port_id,
struct rte_dev_reg_info *  info 
)

Retrieve device registers and register attributes (number of registers and register size)

Parameters
port_idThe port identifier of the Ethernet device.
infoPointer to rte_dev_reg_info structure to fill in. If info->data is NULL the function fills in the width and length fields. If non-NULL the registers are put into the buffer pointed at by the data field.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • others depends on the specific operations implementation.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_get_eeprom_length ( uint16_t  port_id)

Retrieve size of device EEPROM

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • (>=0) EEPROM size if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • others depends on the specific operations implementation.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_get_eeprom ( uint16_t  port_id,
struct rte_dev_eeprom_info *  info 
)

Retrieve EEPROM and EEPROM attribute

Parameters
port_idThe port identifier of the Ethernet device.
infoThe template includes buffer for return EEPROM data and EEPROM attributes to be filled.
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • others depends on the specific operations implementation.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_set_eeprom ( uint16_t  port_id,
struct rte_dev_eeprom_info *  info 
)

Program EEPROM with provided data

Parameters
port_idThe port identifier of the Ethernet device.
infoThe template includes EEPROM data for programming and EEPROM attributes to be filled
Returns
  • (0) if successful.
  • (-ENOTSUP) if hardware doesn't support.
  • (-ENODEV) if port_id invalid.
  • others depends on the specific operations implementation.
Examples:
examples/ethtool/lib/rte_ethtool.c.
int rte_eth_dev_set_mc_addr_list ( uint16_t  port_id,
struct ether_addr mc_addr_set,
uint32_t  nb_mc_addr 
)

Set the list of multicast addresses to filter on an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
mc_addr_setThe array of multicast addresses to set. Equal to NULL when the function is invoked to flush the set of filtered addresses.
nb_mc_addrThe number of multicast addresses in the mc_addr_set array. Equal to 0 when the function is invoked to flush the set of filtered addresses.
Returns
  • (0) if successful.
  • (-ENODEV) if port_id invalid.
  • (-ENOTSUP) if PMD of port_id doesn't support multicast filtering.
  • (-ENOSPC) if port_id has not enough multicast filtering resources.
int rte_eth_timesync_enable ( uint16_t  port_id)

Enable IEEE1588/802.1AS timestamping for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • 0: Success.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
Examples:
examples/ptpclient/ptpclient.c.
int rte_eth_timesync_disable ( uint16_t  port_id)

Disable IEEE1588/802.1AS timestamping for an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
Returns
  • 0: Success.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
int rte_eth_timesync_read_rx_timestamp ( uint16_t  port_id,
struct timespec *  timestamp,
uint32_t  flags 
)

Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
timestampPointer to the timestamp struct.
flagsDevice specific flags. Used to pass the RX timesync register index to i40e. Unused in igb/ixgbe, pass 0 instead.
Returns
  • 0: Success.
  • -EINVAL: No timestamp is available.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
Examples:
examples/ptpclient/ptpclient.c.
int rte_eth_timesync_read_tx_timestamp ( uint16_t  port_id,
struct timespec *  timestamp 
)

Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.

Parameters
port_idThe port identifier of the Ethernet device.
timestampPointer to the timestamp struct.
Returns
  • 0: Success.
  • -EINVAL: No timestamp is available.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
Examples:
examples/ptpclient/ptpclient.c.
int rte_eth_timesync_adjust_time ( uint16_t  port_id,
int64_t  delta 
)

Adjust the timesync clock on an Ethernet device.

This is usually used in conjunction with other Ethdev timesync functions to synchronize the device time using the IEEE1588/802.1AS protocol.

Parameters
port_idThe port identifier of the Ethernet device.
deltaThe adjustment in nanoseconds.
Returns
  • 0: Success.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
Examples:
examples/ptpclient/ptpclient.c.
int rte_eth_timesync_read_time ( uint16_t  port_id,
struct timespec *  time 
)

Read the time from the timesync clock on an Ethernet device.

This is usually used in conjunction with other Ethdev timesync functions to synchronize the device time using the IEEE1588/802.1AS protocol.

Parameters
port_idThe port identifier of the Ethernet device.
timePointer to the timespec struct that holds the time.
Returns
  • 0: Success.
Examples:
examples/ptpclient/ptpclient.c.
int rte_eth_timesync_write_time ( uint16_t  port_id,
const struct timespec *  time 
)

Set the time of the timesync clock on an Ethernet device.

This is usually used in conjunction with other Ethdev timesync functions to synchronize the device time using the IEEE1588/802.1AS protocol.

Parameters
port_idThe port identifier of the Ethernet device.
timePointer to the timespec struct that holds the time.
Returns
  • 0: Success.
  • -EINVAL: No timestamp is available.
  • -ENODEV: The port ID is invalid.
  • -ENOTSUP: The function is not supported by the Ethernet driver.
struct rte_memzone* rte_eth_dma_zone_reserve ( const struct rte_eth_dev *  eth_dev,
const char *  name,
uint16_t  queue_id,
size_t  size,
unsigned  align,
int  socket_id 
)
read

Create memzone for HW rings. malloc can't be used as the physical address is needed. If the memzone is already created, then this function returns a ptr to the old one.

Parameters
eth_devThe eth_dev pointer is the address of the rte_eth_dev structure
nameThe name of the memory zone
queue_idThe index of the queue to add to name
sizeThe sizeof of the memory area
alignAlignment for resulting memzone. Must be a power of 2.
socket_idThe socket_id argument is the socket identifier in case of NUMA.
int rte_eth_dev_l2_tunnel_eth_type_conf ( uint16_t  port_id,
struct rte_eth_l2_tunnel_conf l2_tunnel 
)

Config l2 tunnel ether type of an Ethernet device for filtering specific tunnel packets by ether type.

Parameters
port_idThe port identifier of the Ethernet device.
l2_tunnell2 tunnel configuration.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support tunnel type.
int rte_eth_dev_l2_tunnel_offload_set ( uint16_t  port_id,
struct rte_eth_l2_tunnel_conf l2_tunnel,
uint32_t  mask,
uint8_t  en 
)

Enable/disable l2 tunnel offload functions. Include, 1, The ability of parsing a type of l2 tunnel of an Ethernet device. Filtering, forwarding and offloading this type of tunnel packets depend on this ability. 2, Stripping the l2 tunnel tag. 3, Insertion of the l2 tunnel tag. 4, Forwarding the packets based on the l2 tunnel tag.

Parameters
port_idThe port identifier of the Ethernet device.
l2_tunnell2 tunnel parameters.
maskIndicate the offload function.
enEnable or disable this function.
Returns
  • (0) if successful.
  • (-ENODEV) if port identifier is invalid.
  • (-ENOTSUP) if hardware doesn't support tunnel type.
int rte_eth_dev_get_port_by_name ( const char *  name,
uint16_t *  port_id 
)

Get the port id from pci address or device name Ex: 0000:2:00.0 or vdev name net_pcap0

Parameters
namepci address or name of the device
port_idpointer to port identifier of the device
Returns
  • (0) if successful and port_id is filled.
  • (-ENODEV or -EINVAL) on failure.
int rte_eth_dev_get_name_by_port ( uint16_t  port_id,
char *  name 
)

Get the device name from port id

Parameters
port_idpointer to port identifier of the device
namepci address or name of the device
Returns
  • (0) if successful.
  • (-EINVAL) on failure.
int rte_eth_dev_adjust_nb_rx_tx_desc ( uint16_t  port_id,
uint16_t *  nb_rx_desc,
uint16_t *  nb_tx_desc 
)

Check that numbers of Rx and Tx descriptors satisfy descriptors limits from the ethernet device information, otherwise adjust them to boundaries.

Parameters
port_idThe port identifier of the Ethernet device.
nb_rx_descA pointer to a uint16_t where the number of receive descriptors stored.
nb_tx_descA pointer to a uint16_t where the number of transmit descriptors stored.
Returns
  • (0) if successful.
  • (-ENOTSUP, -ENODEV or -EINVAL) on failure.
Examples:
examples/bond/main.c, examples/distributor/main.c, examples/ethtool/ethtool-app/main.c, examples/exception_path/main.c, examples/ip_fragmentation/main.c, examples/ip_pipeline/init.c, examples/ip_reassembly/main.c, examples/ipsec-secgw/ipsec-secgw.c, examples/ipv4_multicast/main.c, examples/kni/main.c, examples/l2fwd-cat/l2fwd-cat.c, examples/l2fwd-crypto/main.c, examples/l2fwd-jobstats/main.c, examples/l2fwd-keepalive/main.c, examples/l2fwd/main.c, examples/l3fwd-acl/main.c, examples/l3fwd-power/main.c, examples/l3fwd-vf/main.c, examples/l3fwd/main.c, examples/link_status_interrupt/main.c, examples/load_balancer/init.c, examples/multi_process/client_server_mp/mp_server/init.c, examples/multi_process/l2fwd_fork/main.c, examples/multi_process/symmetric_mp/main.c, examples/netmap_compat/lib/compat_netmap.c, examples/packet_ordering/main.c, examples/performance-thread/l3fwd-thread/main.c, examples/ptpclient/ptpclient.c, examples/qos_meter/main.c, examples/qos_sched/init.c, examples/quota_watermark/qw/init.c, examples/rxtx_callbacks/main.c, examples/server_node_efd/server/init.c, examples/skeleton/basicfwd.c, examples/tep_termination/vxlan_setup.c, examples/vhost/main.c, examples/vmdq/main.c, and examples/vmdq_dcb/main.c.
int rte_eth_dev_pool_ops_supported ( uint16_t  port_id,
const char *  pool 
)

Test if a port supports specific mempool ops.

Parameters
port_idPort identifier of the Ethernet device.
[in]poolThe name of the pool operations to test.
Returns
  • 0: best mempool ops choice for this port.
  • 1: mempool ops are supported for this port.
  • -ENOTSUP: mempool ops not supported for this port.
  • -ENODEV: Invalid port Identifier.
  • -EINVAL: Pool param is null.