DPDK  18.11.0-rc3
examples/flow_filtering/main.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2017 Mellanox Technologies, Ltd
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include <setjmp.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>
#include <rte_eal.h>
#include <rte_common.h>
#include <rte_malloc.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_net.h>
#include <rte_flow.h>
#include <rte_cycles.h>
static volatile bool force_quit;
static uint16_t port_id;
static uint16_t nr_queues = 5;
static uint8_t selected_queue = 1;
struct rte_mempool *mbuf_pool;
struct rte_flow *flow;
#define SRC_IP ((0<<24) + (0<<16) + (0<<8) + 0) /* src ip = 0.0.0.0 */
#define DEST_IP ((192<<24) + (168<<16) + (1<<8) + 1) /* dest ip = 192.168.1.1 */
#define FULL_MASK 0xffffffff /* full mask */
#define EMPTY_MASK 0x0 /* empty mask */
#include "flow_blocks.c"
static inline void
print_ether_addr(const char *what, struct ether_addr *eth_addr)
{
char buf[ETHER_ADDR_FMT_SIZE];
ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
printf("%s%s", what, buf);
}
static void
main_loop(void)
{
struct rte_mbuf *mbufs[32];
struct ether_hdr *eth_hdr;
struct rte_flow_error error;
uint16_t nb_rx;
uint16_t i;
uint16_t j;
while (!force_quit) {
for (i = 0; i < nr_queues; i++) {
nb_rx = rte_eth_rx_burst(port_id,
i, mbufs, 32);
if (nb_rx) {
for (j = 0; j < nb_rx; j++) {
struct rte_mbuf *m = mbufs[j];
eth_hdr = rte_pktmbuf_mtod(m,
struct ether_hdr *);
print_ether_addr("src=",
&eth_hdr->s_addr);
print_ether_addr(" - dst=",
&eth_hdr->d_addr);
printf(" - queue=0x%x",
(unsigned int)i);
printf("\n");
}
}
}
}
/* closing and releasing resources */
rte_flow_flush(port_id, &error);
rte_eth_dev_stop(port_id);
}
#define CHECK_INTERVAL 1000 /* 100ms */
#define MAX_REPEAT_TIMES 90 /* 9s (90 * 100ms) in total */
static void
assert_link_status(void)
{
struct rte_eth_link link;
uint8_t rep_cnt = MAX_REPEAT_TIMES;
memset(&link, 0, sizeof(link));
do {
rte_eth_link_get(port_id, &link);
if (link.link_status == ETH_LINK_UP)
break;
rte_delay_ms(CHECK_INTERVAL);
} while (--rep_cnt);
if (link.link_status == ETH_LINK_DOWN)
rte_exit(EXIT_FAILURE, ":: error: link is still down\n");
}
static void
init_port(void)
{
int ret;
uint16_t i;
struct rte_eth_conf port_conf = {
.rxmode = {
},
.txmode = {
.offloads =
DEV_TX_OFFLOAD_IPV4_CKSUM |
DEV_TX_OFFLOAD_UDP_CKSUM |
DEV_TX_OFFLOAD_TCP_CKSUM |
DEV_TX_OFFLOAD_SCTP_CKSUM |
DEV_TX_OFFLOAD_TCP_TSO,
},
};
struct rte_eth_txconf txq_conf;
struct rte_eth_rxconf rxq_conf;
struct rte_eth_dev_info dev_info;
rte_eth_dev_info_get(port_id, &dev_info);
port_conf.txmode.offloads &= dev_info.tx_offload_capa;
printf(":: initializing port: %d\n", port_id);
ret = rte_eth_dev_configure(port_id,
nr_queues, nr_queues, &port_conf);
if (ret < 0) {
rte_exit(EXIT_FAILURE,
":: cannot configure device: err=%d, port=%u\n",
ret, port_id);
}
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = port_conf.rxmode.offloads;
/* only set Rx queues: something we care only so far */
for (i = 0; i < nr_queues; i++) {
ret = rte_eth_rx_queue_setup(port_id, i, 512,
&rxq_conf,
mbuf_pool);
if (ret < 0) {
rte_exit(EXIT_FAILURE,
":: Rx queue setup failed: err=%d, port=%u\n",
ret, port_id);
}
}
txq_conf = dev_info.default_txconf;
txq_conf.offloads = port_conf.txmode.offloads;
for (i = 0; i < nr_queues; i++) {
ret = rte_eth_tx_queue_setup(port_id, i, 512,
&txq_conf);
if (ret < 0) {
rte_exit(EXIT_FAILURE,
":: Tx queue setup failed: err=%d, port=%u\n",
ret, port_id);
}
}
ret = rte_eth_dev_start(port_id);
if (ret < 0) {
rte_exit(EXIT_FAILURE,
"rte_eth_dev_start:err=%d, port=%u\n",
ret, port_id);
}
assert_link_status();
printf(":: initializing port: %d done\n", port_id);
}
static void
signal_handler(int signum)
{
if (signum == SIGINT || signum == SIGTERM) {
printf("\n\nSignal %d received, preparing to exit...\n",
signum);
force_quit = true;
}
}
int
main(int argc, char **argv)
{
int ret;
uint16_t nr_ports;
struct rte_flow_error error;
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, ":: invalid EAL arguments\n");
force_quit = false;
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
if (nr_ports == 0)
rte_exit(EXIT_FAILURE, ":: no Ethernet ports found\n");
port_id = 0;
if (nr_ports != 1) {
printf(":: warn: %d ports detected, but we use only one: port %u\n",
nr_ports, port_id);
}
mbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", 4096, 128, 0,
RTE_MBUF_DEFAULT_BUF_SIZE,
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
init_port();
/* create flow for send packet with */
flow = generate_ipv4_flow(port_id, selected_queue,
SRC_IP, EMPTY_MASK,
DEST_IP, FULL_MASK, &error);
if (!flow) {
printf("Flow can't be created %d message: %s\n",
error.type,
error.message ? error.message : "(no stated reason)");
rte_exit(EXIT_FAILURE, "error in creating flow");
}
main_loop();
return 0;
}