DPDK  18.11.0-rc3
examples/qos_meter/main.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2016 Intel Corporation
*/
#include <stdio.h>
#include <getopt.h>
#include <rte_common.h>
#include <rte_eal.h>
#include <rte_malloc.h>
#include <rte_mempool.h>
#include <rte_ethdev.h>
#include <rte_cycles.h>
#include <rte_mbuf.h>
#include <rte_meter.h>
/*
* Traffic metering configuration
*
*/
#define APP_MODE_FWD 0
#define APP_MODE_SRTCM_COLOR_BLIND 1
#define APP_MODE_SRTCM_COLOR_AWARE 2
#define APP_MODE_TRTCM_COLOR_BLIND 3
#define APP_MODE_TRTCM_COLOR_AWARE 4
#define APP_MODE APP_MODE_SRTCM_COLOR_BLIND
#include "main.h"
#define APP_PKT_FLOW_POS 33
#define APP_PKT_COLOR_POS 5
#if APP_PKT_FLOW_POS > 64 || APP_PKT_COLOR_POS > 64
#error Byte offset needs to be less than 64
#endif
/*
* Buffer pool configuration
*
***/
#define NB_MBUF 8192
#define MEMPOOL_CACHE_SIZE 256
static struct rte_mempool *pool = NULL;
/*
* NIC configuration
*
***/
static struct rte_eth_conf port_conf = {
.rxmode = {
.max_rx_pkt_len = ETHER_MAX_LEN,
.split_hdr_size = 0,
.offloads = DEV_RX_OFFLOAD_CHECKSUM,
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = ETH_RSS_IP,
},
},
.txmode = {
.mq_mode = ETH_DCB_NONE,
},
};
#define NIC_RX_QUEUE_DESC 1024
#define NIC_TX_QUEUE_DESC 1024
#define NIC_RX_QUEUE 0
#define NIC_TX_QUEUE 0
/*
* Packet RX/TX
*
***/
#define PKT_RX_BURST_MAX 32
#define PKT_TX_BURST_MAX 32
#define TIME_TX_DRAIN 200000ULL
static uint16_t port_rx;
static uint16_t port_tx;
static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX];
struct rte_eth_dev_tx_buffer *tx_buffer;
struct rte_meter_srtcm_params app_srtcm_params = {
.cir = 1000000 * 46,
.cbs = 2048,
.ebs = 2048
};
struct rte_meter_srtcm_profile app_srtcm_profile;
struct rte_meter_trtcm_params app_trtcm_params = {
.cir = 1000000 * 46,
.pir = 1500000 * 46,
.cbs = 2048,
.pbs = 2048
};
struct rte_meter_trtcm_profile app_trtcm_profile;
#define APP_FLOWS_MAX 256
FLOW_METER app_flows[APP_FLOWS_MAX];
static int
app_configure_flow_table(void)
{
uint32_t i;
int ret;
ret = rte_meter_srtcm_profile_config(&app_srtcm_profile,
&app_srtcm_params);
if (ret)
return ret;
ret = rte_meter_trtcm_profile_config(&app_trtcm_profile,
&app_trtcm_params);
if (ret)
return ret;
for (i = 0; i < APP_FLOWS_MAX; i++) {
ret = FUNC_CONFIG(&app_flows[i], &PROFILE);
if (ret)
return ret;
}
return 0;
}
static inline void
app_set_pkt_color(uint8_t *pkt_data, enum policer_action color)
{
pkt_data[APP_PKT_COLOR_POS] = (uint8_t)color;
}
static inline int
app_pkt_handle(struct rte_mbuf *pkt, uint64_t time)
{
uint8_t input_color, output_color;
uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *);
uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr);
uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1));
input_color = pkt_data[APP_PKT_COLOR_POS];
enum policer_action action;
/* color input is not used for blind modes */
output_color = (uint8_t) FUNC_METER(&app_flows[flow_id],
&PROFILE,
time,
pkt_len,
(enum rte_meter_color) input_color);
/* Apply policing and set the output color */
action = policer_table[input_color][output_color];
app_set_pkt_color(pkt_data, action);
return action;
}
static __attribute__((noreturn)) int
main_loop(__attribute__((unused)) void *dummy)
{
uint64_t current_time, last_time = rte_rdtsc();
uint32_t lcore_id = rte_lcore_id();
printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx);
while (1) {
uint64_t time_diff;
int i, nb_rx;
/* Mechanism to avoid stale packets in the output buffer */
current_time = rte_rdtsc();
time_diff = current_time - last_time;
if (unlikely(time_diff > TIME_TX_DRAIN)) {
/* Flush tx buffer */
rte_eth_tx_buffer_flush(port_tx, NIC_TX_QUEUE, tx_buffer);
last_time = current_time;
}
/* Read packet burst from NIC RX */
nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX);
/* Handle packets */
for (i = 0; i < nb_rx; i ++) {
struct rte_mbuf *pkt = pkts_rx[i];
/* Handle current packet */
if (app_pkt_handle(pkt, current_time) == DROP)
else
rte_eth_tx_buffer(port_tx, NIC_TX_QUEUE, tx_buffer, pkt);
}
}
}
static void
print_usage(const char *prgname)
{
printf ("%s [EAL options] -- -p PORTMASK\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n",
prgname);
}
static int
parse_portmask(const char *portmask)
{
char *end = NULL;
unsigned long pm;
/* parse hexadecimal string */
pm = strtoul(portmask, &end, 16);
if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (pm == 0)
return -1;
return pm;
}
/* Parse the argument given in the command line of the application */
static int
parse_args(int argc, char **argv)
{
int opt;
char **argvopt;
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
{NULL, 0, 0, 0}
};
uint64_t port_mask, i, mask;
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) {
switch (opt) {
case 'p':
port_mask = parse_portmask(optarg);
if (port_mask == 0) {
printf("invalid port mask (null port mask)\n");
print_usage(prgname);
return -1;
}
for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){
if (mask & port_mask){
port_rx = i;
port_mask &= ~ mask;
break;
}
}
for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){
if (mask & port_mask){
port_tx = i;
port_mask &= ~ mask;
break;
}
}
if (port_mask != 0) {
printf("invalid port mask (more than 2 ports)\n");
print_usage(prgname);
return -1;
}
break;
default:
print_usage(prgname);
return -1;
}
}
if (optind <= 1) {
print_usage(prgname);
return -1;
}
argv[optind-1] = prgname;
optind = 1; /* reset getopt lib */
return 0;
}
int
main(int argc, char **argv)
{
uint32_t lcore_id;
uint16_t nb_rxd = NIC_RX_QUEUE_DESC;
uint16_t nb_txd = NIC_TX_QUEUE_DESC;
struct rte_eth_conf conf;
struct rte_eth_rxconf rxq_conf;
struct rte_eth_txconf txq_conf;
struct rte_eth_dev_info dev_info;
int ret;
/* EAL init */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
argc -= ret;
argv += ret;
if (rte_lcore_count() != 1) {
rte_exit(EXIT_FAILURE, "This application does not accept more than one core. "
"Please adjust the \"-c COREMASK\" parameter accordingly.\n");
}
/* Application non-EAL arguments parse */
ret = parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid input arguments\n");
/* Buffer pool init */
pool = rte_pktmbuf_pool_create("pool", NB_MBUF, MEMPOOL_CACHE_SIZE,
0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (pool == NULL)
rte_exit(EXIT_FAILURE, "Buffer pool creation error\n");
/* NIC init */
conf = port_conf;
rte_eth_dev_info_get(port_rx, &dev_info);
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
if (conf.rx_adv_conf.rss_conf.rss_hf !=
printf("Port %u modified RSS hash function based on hardware support,"
"requested:%#"PRIx64" configured:%#"PRIx64"\n",
port_rx,
conf.rx_adv_conf.rss_conf.rss_hf);
}
ret = rte_eth_dev_configure(port_rx, 1, 1, &conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret);
ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_rx, &nb_rxd, &nb_txd);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n",
port_rx, ret);
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = conf.rxmode.offloads;
ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, nb_rxd,
&rxq_conf, pool);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret);
txq_conf = dev_info.default_txconf;
txq_conf.offloads = conf.txmode.offloads;
ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, nb_txd,
&txq_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret);
conf = port_conf;
rte_eth_dev_info_get(port_tx, &dev_info);
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
if (conf.rx_adv_conf.rss_conf.rss_hf !=
printf("Port %u modified RSS hash function based on hardware support,"
"requested:%#"PRIx64" configured:%#"PRIx64"\n",
port_tx,
conf.rx_adv_conf.rss_conf.rss_hf);
}
ret = rte_eth_dev_configure(port_tx, 1, 1, &conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret);
nb_rxd = NIC_RX_QUEUE_DESC;
nb_txd = NIC_TX_QUEUE_DESC;
ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_tx, &nb_rxd, &nb_txd);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n",
port_tx, ret);
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = conf.rxmode.offloads;
ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, nb_rxd,
NULL, pool);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret);
txq_conf = dev_info.default_txconf;
txq_conf.offloads = conf.txmode.offloads;
ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, nb_txd,
NULL);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret);
tx_buffer = rte_zmalloc_socket("tx_buffer",
RTE_ETH_TX_BUFFER_SIZE(PKT_TX_BURST_MAX), 0,
if (tx_buffer == NULL)
rte_exit(EXIT_FAILURE, "Port %d TX buffer allocation error\n",
port_tx);
rte_eth_tx_buffer_init(tx_buffer, PKT_TX_BURST_MAX);
ret = rte_eth_dev_start(port_rx);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret);
ret = rte_eth_dev_start(port_tx);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret);
/* App configuration */
ret = app_configure_flow_table();
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid configure flow table\n");
/* Launch per-lcore init on every lcore */
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
return 0;
}