DPDK  20.11.3
examples/ethtool/ethtool-app/main.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2015 Intel Corporation
*/
#include <stdio.h>
#include <stdlib.h>
#include <rte_common.h>
#include <rte_spinlock.h>
#include <rte_eal.h>
#include <rte_ethdev.h>
#include <rte_ether.h>
#include <rte_ip.h>
#include <rte_memory.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include "ethapp.h"
#define MAX_PORTS RTE_MAX_ETHPORTS
#define MAX_BURST_LENGTH 32
#define PORT_RX_QUEUE_SIZE 1024
#define PORT_TX_QUEUE_SIZE 1024
#define PKTPOOL_EXTRA_SIZE 512
#define PKTPOOL_CACHE 32
struct txq_port {
uint16_t cnt_unsent;
struct rte_mbuf *buf_frames[MAX_BURST_LENGTH];
};
struct app_port {
struct rte_ether_addr mac_addr;
struct txq_port txq;
int port_active;
int port_dirty;
int idx_port;
struct rte_mempool *pkt_pool;
};
struct app_config {
struct app_port ports[MAX_PORTS];
int cnt_ports;
int exit_now;
};
struct app_config app_cfg;
void lock_port(int idx_port)
{
struct app_port *ptr_port = &app_cfg.ports[idx_port];
rte_spinlock_lock(&ptr_port->lock);
}
void unlock_port(int idx_port)
{
struct app_port *ptr_port = &app_cfg.ports[idx_port];
rte_spinlock_unlock(&ptr_port->lock);
}
void mark_port_active(int idx_port)
{
struct app_port *ptr_port = &app_cfg.ports[idx_port];
ptr_port->port_active = 1;
}
void mark_port_inactive(int idx_port)
{
struct app_port *ptr_port = &app_cfg.ports[idx_port];
ptr_port->port_active = 0;
}
void mark_port_newmac(int idx_port)
{
struct app_port *ptr_port = &app_cfg.ports[idx_port];
ptr_port->port_dirty = 1;
}
static void setup_ports(struct app_config *app_cfg, int cnt_ports)
{
int idx_port;
int size_pktpool;
struct rte_eth_conf cfg_port;
struct rte_eth_dev_info dev_info;
char str_name[16];
uint16_t nb_rxd = PORT_RX_QUEUE_SIZE;
uint16_t nb_txd = PORT_TX_QUEUE_SIZE;
int ret;
memset(&cfg_port, 0, sizeof(cfg_port));
for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
struct app_port *ptr_port = &app_cfg->ports[idx_port];
ret = rte_eth_dev_info_get(idx_port, &dev_info);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"Error during getting device (port %u) info: %s\n",
idx_port, strerror(-ret));
size_pktpool = dev_info.rx_desc_lim.nb_max +
dev_info.tx_desc_lim.nb_max + PKTPOOL_EXTRA_SIZE;
snprintf(str_name, 16, "pkt_pool%i", idx_port);
ptr_port->pkt_pool = rte_pktmbuf_pool_create(
str_name,
size_pktpool, PKTPOOL_CACHE,
0,
RTE_MBUF_DEFAULT_BUF_SIZE,
);
if (ptr_port->pkt_pool == NULL)
rte_exit(EXIT_FAILURE,
"rte_pktmbuf_pool_create failed"
);
printf("Init port %i..\n", idx_port);
ptr_port->port_active = 1;
ptr_port->port_dirty = 0;
ptr_port->idx_port = idx_port;
if (rte_eth_dev_configure(idx_port, 1, 1, &cfg_port) < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_dev_configure failed");
if (rte_eth_dev_adjust_nb_rx_tx_desc(idx_port, &nb_rxd,
&nb_txd) < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_dev_adjust_nb_rx_tx_desc failed");
idx_port, 0, nb_rxd,
rte_eth_dev_socket_id(idx_port), NULL,
ptr_port->pkt_pool) < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_rx_queue_setup failed"
);
idx_port, 0, nb_txd,
rte_eth_dev_socket_id(idx_port), NULL) < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_tx_queue_setup failed"
);
if (rte_eth_dev_start(idx_port) < 0)
rte_exit(EXIT_FAILURE,
"%s:%i: rte_eth_dev_start failed",
__FILE__, __LINE__
);
ret = rte_eth_macaddr_get(idx_port, &ptr_port->mac_addr);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"rte_eth_macaddr_get failed (port %u): %s\n",
idx_port, rte_strerror(-ret));
rte_spinlock_init(&ptr_port->lock);
}
}
static void process_frame(struct app_port *ptr_port,
struct rte_mbuf *ptr_frame)
{
struct rte_ether_hdr *ptr_mac_hdr;
ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct rte_ether_hdr *);
rte_ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
rte_ether_addr_copy(&ptr_port->mac_addr, &ptr_mac_hdr->s_addr);
}
static int worker_main(__rte_unused void *ptr_data)
{
struct app_port *ptr_port;
struct rte_mbuf *ptr_frame;
struct txq_port *txq;
uint16_t cnt_recv_frames;
uint16_t idx_frame;
uint16_t cnt_sent;
uint16_t idx_port;
uint16_t lock_result;
int ret;
while (app_cfg.exit_now == 0) {
for (idx_port = 0; idx_port < app_cfg.cnt_ports; idx_port++) {
/* Check that port is active and unlocked */
ptr_port = &app_cfg.ports[idx_port];
lock_result = rte_spinlock_trylock(&ptr_port->lock);
if (lock_result == 0)
continue;
if (ptr_port->port_active == 0) {
rte_spinlock_unlock(&ptr_port->lock);
continue;
}
txq = &ptr_port->txq;
/* MAC address was updated */
if (ptr_port->port_dirty == 1) {
ret = rte_eth_macaddr_get(ptr_port->idx_port,
&ptr_port->mac_addr);
if (ret != 0) {
rte_spinlock_unlock(&ptr_port->lock);
printf("Failed to get MAC address (port %u): %s",
ptr_port->idx_port,
rte_strerror(-ret));
return ret;
}
ptr_port->port_dirty = 0;
}
/* Incoming frames */
cnt_recv_frames = rte_eth_rx_burst(
ptr_port->idx_port, 0,
&txq->buf_frames[txq->cnt_unsent],
RTE_DIM(txq->buf_frames) - txq->cnt_unsent
);
if (cnt_recv_frames > 0) {
for (idx_frame = 0;
idx_frame < cnt_recv_frames;
idx_frame++) {
ptr_frame = txq->buf_frames[
idx_frame + txq->cnt_unsent];
process_frame(ptr_port, ptr_frame);
}
txq->cnt_unsent += cnt_recv_frames;
}
/* Outgoing frames */
if (txq->cnt_unsent > 0) {
cnt_sent = rte_eth_tx_burst(
ptr_port->idx_port, 0,
txq->buf_frames,
txq->cnt_unsent
);
/* Shuffle up unsent frame pointers */
for (idx_frame = cnt_sent;
idx_frame < txq->cnt_unsent;
idx_frame++)
txq->buf_frames[idx_frame - cnt_sent] =
txq->buf_frames[idx_frame];
txq->cnt_unsent -= cnt_sent;
}
rte_spinlock_unlock(&ptr_port->lock);
} /* end for( idx_port ) */
} /* end for(;;) */
return 0;
}
int main(int argc, char **argv)
{
int cnt_args_parsed;
uint32_t id_core;
uint32_t cnt_ports;
/* Init runtime environment */
cnt_args_parsed = rte_eal_init(argc, argv);
if (cnt_args_parsed < 0)
rte_exit(EXIT_FAILURE, "rte_eal_init(): Failed");
cnt_ports = rte_eth_dev_count_avail();
printf("Number of NICs: %i\n", cnt_ports);
if (cnt_ports == 0)
rte_exit(EXIT_FAILURE, "No available NIC ports!\n");
if (cnt_ports > MAX_PORTS) {
printf("Info: Using only %i of %i ports\n",
cnt_ports, MAX_PORTS
);
cnt_ports = MAX_PORTS;
}
setup_ports(&app_cfg, cnt_ports);
app_cfg.exit_now = 0;
app_cfg.cnt_ports = cnt_ports;
if (rte_lcore_count() < 2)
rte_exit(EXIT_FAILURE, "No available worker core!\n");
/* Assume there is an available worker.. */
id_core = rte_lcore_id();
id_core = rte_get_next_lcore(id_core, 1, 1);
rte_eal_remote_launch(worker_main, NULL, id_core);
ethapp_main();
app_cfg.exit_now = 1;
if (rte_eal_wait_lcore(id_core) < 0)
return -1;
}
/* clean up the EAL */
return 0;
}