DPDK  17.05.2
examples/ethtool/ethtool-app/main.c
/*-
* BSD LICENSE
*
* Copyright(c) 2015 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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 128
#define PORT_TX_QUEUE_SIZE 256
#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 ether_addr mac_addr;
struct txq_port txq;
rte_spinlock_t lock;
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];
memset(&cfg_port, 0, sizeof(cfg_port));
cfg_port.txmode.mq_mode = ETH_MQ_TX_NONE;
for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
struct app_port *ptr_port = &app_cfg->ports[idx_port];
rte_eth_dev_info_get(idx_port, &dev_info);
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,
rte_socket_id()
);
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_rx_queue_setup(
idx_port, 0, PORT_RX_QUEUE_SIZE,
rte_eth_dev_socket_id(idx_port), NULL,
ptr_port->pkt_pool) < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_rx_queue_setup failed"
);
if (rte_eth_tx_queue_setup(
idx_port, 0, PORT_TX_QUEUE_SIZE,
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__
);
rte_eth_macaddr_get(idx_port, &ptr_port->mac_addr);
rte_spinlock_init(&ptr_port->lock);
}
}
static void process_frame(struct app_port *ptr_port,
struct rte_mbuf *ptr_frame)
{
struct ether_hdr *ptr_mac_hdr;
ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct ether_hdr *);
ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
ether_addr_copy(&ptr_port->mac_addr, &ptr_mac_hdr->s_addr);
}
static int slave_main(__attribute__((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;
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) {
rte_eth_macaddr_get(ptr_port->idx_port,
&ptr_port->mac_addr);
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 enviornment */
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();
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 slave core!\n");
/* Assume there is an available slave.. */
id_core = rte_lcore_id();
id_core = rte_get_next_lcore(id_core, 1, 1);
rte_eal_remote_launch(slave_main, NULL, id_core);
ethapp_main();
app_cfg.exit_now = 1;
RTE_LCORE_FOREACH_SLAVE(id_core) {
if (rte_eal_wait_lcore(id_core) < 0)
return -1;
}
return 0;
}
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