DPDK  24.11.0-rc3
examples/l2fwd-jobstats/main.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2016 Intel Corporation
*/
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#include <getopt.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_spinlock.h>
#include <rte_errno.h>
#include <rte_jobstats.h>
#include <rte_timer.h>
#include <rte_alarm.h>
#include <rte_pause.h>
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
#define NB_MBUF 8192
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
/*
* Configurable number of RX/TX ring descriptors
*/
#define RX_DESC_DEFAULT 1024
#define TX_DESC_DEFAULT 1024
static uint16_t nb_rxd = RX_DESC_DEFAULT;
static uint16_t nb_txd = TX_DESC_DEFAULT;
/* ethernet addresses of ports */
static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
/* mask of enabled ports */
static uint32_t l2fwd_enabled_port_mask;
/* list of enabled ports */
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
#define UPDATE_STEP_UP 1
#define UPDATE_STEP_DOWN 32
static unsigned int l2fwd_rx_queue_per_lcore = 1;
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
/* List of queues to be polled for given lcore. 8< */
struct __rte_cache_aligned lcore_queue_conf {
unsigned n_rx_port;
unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
uint64_t next_flush_time[RTE_MAX_ETHPORTS];
struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
struct rte_timer flush_timer;
struct rte_jobstats flush_job;
struct rte_jobstats idle_job;
struct rte_jobstats_context jobs_context;
RTE_ATOMIC(uint16_t) stats_read_pending;
rte_spinlock_t lock;
};
/* >8 End of list of queues to be polled for given lcore. */
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
static struct rte_eth_conf port_conf = {
.txmode = {
.mq_mode = RTE_ETH_MQ_TX_NONE,
},
};
struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
/* Per-port statistics struct */
struct __rte_cache_aligned l2fwd_port_statistics {
uint64_t tx;
uint64_t rx;
uint64_t dropped;
};
struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
/* 1 day max */
#define MAX_TIMER_PERIOD 86400
/* default period is 10 seconds */
static int64_t timer_period = 10;
/* default timer frequency */
static double hz;
/* BURST_TX_DRAIN_US converted to cycles */
uint64_t drain_tsc;
/* Convert cycles to ns */
static inline double
cycles_to_ns(uint64_t cycles)
{
double t = cycles;
t *= (double)NS_PER_S;
t /= hz;
return t;
}
static void
show_lcore_stats(unsigned lcore_id)
{
struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
struct rte_jobstats_context *ctx = &qconf->jobs_context;
struct rte_jobstats *job;
uint8_t i;
/* LCore statistics. */
uint64_t stats_period, loop_count;
uint64_t exec, exec_min, exec_max;
uint64_t management, management_min, management_max;
uint64_t busy, busy_min, busy_max;
/* Jobs statistics. */
const uint16_t port_cnt = qconf->n_rx_port;
uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
jobs_exec_max[port_cnt];
uint64_t flush_exec_cnt, flush_period;
uint64_t flush_exec, flush_exec_min, flush_exec_max;
uint64_t idle_exec_cnt;
uint64_t idle_exec, idle_exec_min, idle_exec_max;
uint64_t collection_time = rte_get_timer_cycles();
/* Ask forwarding thread to give us stats. */
rte_atomic_store_explicit(&qconf->stats_read_pending, 1, rte_memory_order_relaxed);
rte_spinlock_lock(&qconf->lock);
rte_atomic_store_explicit(&qconf->stats_read_pending, 0, rte_memory_order_relaxed);
/* Collect context statistics. */
stats_period = ctx->state_time - ctx->start_time;
loop_count = ctx->loop_cnt;
exec = ctx->exec_time;
exec_min = ctx->min_exec_time;
exec_max = ctx->max_exec_time;
management = ctx->management_time;
management_min = ctx->min_management_time;
management_max = ctx->max_management_time;
rte_jobstats_context_reset(ctx);
for (i = 0; i < port_cnt; i++) {
job = &qconf->port_fwd_jobs[i];
jobs_exec_cnt[i] = job->exec_cnt;
jobs_period[i] = job->period;
jobs_exec[i] = job->exec_time;
jobs_exec_min[i] = job->min_exec_time;
jobs_exec_max[i] = job->max_exec_time;
rte_jobstats_reset(job);
}
flush_exec_cnt = qconf->flush_job.exec_cnt;
flush_period = qconf->flush_job.period;
flush_exec = qconf->flush_job.exec_time;
flush_exec_min = qconf->flush_job.min_exec_time;
flush_exec_max = qconf->flush_job.max_exec_time;
rte_jobstats_reset(&qconf->flush_job);
idle_exec_cnt = qconf->idle_job.exec_cnt;
idle_exec = qconf->idle_job.exec_time;
idle_exec_min = qconf->idle_job.min_exec_time;
idle_exec_max = qconf->idle_job.max_exec_time;
rte_jobstats_reset(&qconf->idle_job);
rte_spinlock_unlock(&qconf->lock);
exec -= idle_exec;
busy = exec + management;
busy_min = exec_min + management_min;
busy_max = exec_max + management_max;
collection_time = rte_get_timer_cycles() - collection_time;
#define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
printf("\n----------------"
"\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
"\n%-18s %14s %7s %10s %10s %10s "
"\n%-18s %'14.0f"
"\n%-18s %'14" PRIu64
STAT_FMT /* Exec */
STAT_FMT /* Management */
STAT_FMT /* Busy */
STAT_FMT, /* Idle */
lcore_id, cycles_to_ns(collection_time),
"Stat type", "total", "%total", "avg", "min", "max",
"Stats duration:", cycles_to_ns(stats_period),
"Loop count:", loop_count,
"Exec time",
cycles_to_ns(exec), exec * 100.0 / stats_period,
cycles_to_ns(loop_count ? exec / loop_count : 0),
cycles_to_ns(exec_min),
cycles_to_ns(exec_max),
"Management time",
cycles_to_ns(management), management * 100.0 / stats_period,
cycles_to_ns(loop_count ? management / loop_count : 0),
cycles_to_ns(management_min),
cycles_to_ns(management_max),
"Exec + management",
cycles_to_ns(busy), busy * 100.0 / stats_period,
cycles_to_ns(loop_count ? busy / loop_count : 0),
cycles_to_ns(busy_min),
cycles_to_ns(busy_max),
"Idle (job)",
cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
cycles_to_ns(idle_exec_min),
cycles_to_ns(idle_exec_max));
for (i = 0; i < qconf->n_rx_port; i++) {
job = &qconf->port_fwd_jobs[i];
printf("\n\nJob %" PRIu32 ": %-20s "
"\n%-18s %'14" PRIu64
"\n%-18s %'14.0f"
STAT_FMT,
i, job->name,
"Exec count:", jobs_exec_cnt[i],
"Exec period: ", cycles_to_ns(jobs_period[i]),
"Exec time",
cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
: 0),
cycles_to_ns(jobs_exec_min[i]),
cycles_to_ns(jobs_exec_max[i]));
}
if (qconf->n_rx_port > 0) {
job = &qconf->flush_job;
printf("\n\nJob %" PRIu32 ": %-20s "
"\n%-18s %'14" PRIu64
"\n%-18s %'14.0f"
STAT_FMT,
i, job->name,
"Exec count:", flush_exec_cnt,
"Exec period: ", cycles_to_ns(flush_period),
"Exec time",
cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
cycles_to_ns(flush_exec_min),
cycles_to_ns(flush_exec_max));
}
}
/* Print out statistics on packets dropped */
static void
show_stats_cb(__rte_unused void *param)
{
uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
unsigned portid, lcore_id;
total_packets_dropped = 0;
total_packets_tx = 0;
total_packets_rx = 0;
const char clr[] = { 27, '[', '2', 'J', '\0' };
const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
/* Clear screen and move to top left */
printf("%s%s"
"\nPort statistics ===================================",
clr, topLeft);
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
/* skip disabled ports */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
printf("\nStatistics for port %u ------------------------------"
"\nPackets sent: %24"PRIu64
"\nPackets received: %20"PRIu64
"\nPackets dropped: %21"PRIu64,
portid,
port_statistics[portid].tx,
port_statistics[portid].rx,
port_statistics[portid].dropped);
total_packets_dropped += port_statistics[portid].dropped;
total_packets_tx += port_statistics[portid].tx;
total_packets_rx += port_statistics[portid].rx;
}
printf("\nAggregate statistics ==============================="
"\nTotal packets sent: %18"PRIu64
"\nTotal packets received: %14"PRIu64
"\nTotal packets dropped: %15"PRIu64
"\n====================================================",
total_packets_tx,
total_packets_rx,
total_packets_dropped);
RTE_LCORE_FOREACH(lcore_id) {
if (lcore_queue_conf[lcore_id].n_rx_port > 0)
show_lcore_stats(lcore_id);
}
printf("\n====================================================\n");
fflush(stdout);
rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
}
/* Start of l2fwd_simple_forward. 8< */
static void
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
{
struct rte_ether_hdr *eth;
void *tmp;
int sent;
unsigned dst_port;
struct rte_eth_dev_tx_buffer *buffer;
dst_port = l2fwd_dst_ports[portid];
eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
/* 02:00:00:00:00:xx */
tmp = &eth->dst_addr.addr_bytes[0];
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
/* src addr */
rte_ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->src_addr);
buffer = tx_buffer[dst_port];
sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
if (sent)
port_statistics[dst_port].tx += sent;
}
/* >8 End of l2fwd_simple_forward. */
static void
l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
{
int64_t err = job->target - result;
int64_t histeresis = job->target / 8;
if (err < -histeresis) {
if (job->min_period + UPDATE_STEP_DOWN < job->period)
job->period -= UPDATE_STEP_DOWN;
} else if (err > histeresis) {
if (job->period + UPDATE_STEP_UP < job->max_period)
job->period += UPDATE_STEP_UP;
}
}
static void
l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mbuf *m;
const uint16_t port_idx = (uintptr_t) arg;
const unsigned lcore_id = rte_lcore_id();
struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
const uint16_t portid = qconf->rx_port_list[port_idx];
uint8_t j;
uint16_t total_nb_rx;
rte_jobstats_start(&qconf->jobs_context, job);
/* Call rx burst 2 times. This allow rte_jobstats logic to see if this
* function must be called more frequently. */
/* Call rx burst 2 times. 8< */
total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
MAX_PKT_BURST);
for (j = 0; j < total_nb_rx; j++) {
m = pkts_burst[j];
rte_prefetch0(rte_pktmbuf_mtod(m, void *));
l2fwd_simple_forward(m, portid);
}
/* >8 End of call rx burst 2 times. */
/* Read second try. 8< */
if (total_nb_rx == MAX_PKT_BURST) {
const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
MAX_PKT_BURST);
total_nb_rx += nb_rx;
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
rte_prefetch0(rte_pktmbuf_mtod(m, void *));
l2fwd_simple_forward(m, portid);
}
}
/* >8 End of read second try. */
port_statistics[portid].rx += total_nb_rx;
/* Adjust period time in which we are running here. 8< */
if (rte_jobstats_finish(job, total_nb_rx) != 0) {
rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
lcore_id, l2fwd_fwd_job, arg);
}
/* >8 End of adjust period time in which we are running. */
}
/* Draining TX queue of each port. 8< */
static void
l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
{
uint64_t now;
unsigned lcore_id;
struct lcore_queue_conf *qconf;
uint16_t portid;
unsigned i;
uint32_t sent;
struct rte_eth_dev_tx_buffer *buffer;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
now = rte_get_timer_cycles();
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
for (i = 0; i < qconf->n_rx_port; i++) {
portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
if (qconf->next_flush_time[portid] <= now)
continue;
buffer = tx_buffer[portid];
sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
if (sent)
port_statistics[portid].tx += sent;
qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
}
/* Pass target to indicate that this job is happy of time interval
* in which it was called. */
rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
}
/* >8 End of draining TX queue of each port. */
/* main processing loop */
static void
l2fwd_main_loop(void)
{
unsigned lcore_id;
unsigned i, portid;
struct lcore_queue_conf *qconf;
uint8_t stats_read_pending = 0;
uint8_t need_manage;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
if (qconf->n_rx_port == 0) {
RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
return;
}
RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
portid);
}
rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
/* Minimize impact of stats reading. 8< */
for (;;) {
rte_spinlock_lock(&qconf->lock);
do {
rte_jobstats_context_start(&qconf->jobs_context);
/* Do the Idle job:
* - Read stats_read_pending flag
* - check if some real job need to be executed
*/
rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
uint64_t repeats = 0;
do {
uint8_t i;
uint64_t now = rte_get_timer_cycles();
repeats++;
need_manage = qconf->flush_timer.expire < now;
/* Check if we was esked to give a stats. */
stats_read_pending = rte_atomic_load_explicit(
&qconf->stats_read_pending,
rte_memory_order_relaxed);
need_manage |= stats_read_pending;
for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
need_manage = qconf->rx_timers[i].expire < now;
} while (!need_manage);
if (likely(repeats != 1))
rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
else
rte_jobstats_abort(&qconf->idle_job);
rte_timer_manage();
rte_jobstats_context_finish(&qconf->jobs_context);
} while (likely(stats_read_pending == 0));
rte_spinlock_unlock(&qconf->lock);
rte_pause();
}
/* >8 End of minimize impact of stats reading. */
}
static int
l2fwd_launch_one_lcore(__rte_unused void *dummy)
{
l2fwd_main_loop();
return 0;
}
/* display usage */
static void
l2fwd_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
" -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
prgname);
}
static int
l2fwd_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 0;
return pm;
}
static unsigned int
l2fwd_parse_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
/* parse hexadecimal string */
n = strtoul(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return 0;
if (n == 0)
return 0;
if (n >= MAX_RX_QUEUE_PER_LCORE)
return 0;
return n;
}
static int
l2fwd_parse_timer_period(const char *q_arg)
{
char *end = NULL;
int n;
/* parse number string */
n = strtol(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (n >= MAX_TIMER_PERIOD)
return -1;
return n;
}
/* Parse the argument given in the command line of the application */
static int
l2fwd_parse_args(int argc, char **argv)
{
int opt, ret;
char **argvopt;
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
{NULL, 0, 0, 0}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
if (l2fwd_enabled_port_mask == 0) {
printf("invalid portmask\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* nqueue */
case 'q':
l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
if (l2fwd_rx_queue_per_lcore == 0) {
printf("invalid queue number\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* timer period */
case 'T':
timer_period = l2fwd_parse_timer_period(optarg);
if (timer_period < 0) {
printf("invalid timer period\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* For thousands separator in printf. */
case 'l':
setlocale(LC_ALL, "");
break;
/* long options */
case 0:
l2fwd_usage(prgname);
return -1;
default:
l2fwd_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
ret = optind-1;
optind = 1; /* reset getopt lib */
return ret;
}
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
uint16_t portid;
uint8_t count, all_ports_up, print_flag = 0;
struct rte_eth_link link;
int ret;
char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
all_ports_up = 1;
RTE_ETH_FOREACH_DEV(portid) {
if ((port_mask & (1 << portid)) == 0)
continue;
memset(&link, 0, sizeof(link));
ret = rte_eth_link_get_nowait(portid, &link);
if (ret < 0) {
all_ports_up = 0;
if (print_flag == 1)
printf("Port %u link get failed: %s\n",
portid, rte_strerror(-ret));
continue;
}
/* print link status if flag set */
if (print_flag == 1) {
rte_eth_link_to_str(link_status_text,
sizeof(link_status_text), &link);
printf("Port %d %s\n", portid,
link_status_text);
continue;
}
/* clear all_ports_up flag if any link down */
if (link.link_status == RTE_ETH_LINK_DOWN) {
all_ports_up = 0;
break;
}
}
/* after finally printing all link status, get out */
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
rte_delay_ms(CHECK_INTERVAL);
}
/* set the print_flag if all ports up or timeout */
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
int
main(int argc, char **argv)
{
struct lcore_queue_conf *qconf;
unsigned lcore_id, rx_lcore_id;
unsigned nb_ports_in_mask = 0;
int ret;
char name[RTE_JOBSTATS_NAMESIZE];
uint16_t nb_ports;
uint16_t nb_ports_available = 0;
uint16_t portid, last_port;
uint8_t i;
/* Init EAL. 8< */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
argc -= ret;
argv += ret;
/* parse application arguments (after the EAL ones) */
ret = l2fwd_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
/* >8 End of init EAL. */
rte_timer_subsystem_init();
/* fetch default timer frequency. */
hz = rte_get_timer_hz();
/* Create the mbuf pool. 8< */
l2fwd_pktmbuf_pool =
rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (l2fwd_pktmbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
/* >8 End of creation of mbuf pool. */
nb_ports = rte_eth_dev_count_avail();
if (nb_ports == 0)
rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
/* Reset l2fwd_dst_ports. 8< */
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
l2fwd_dst_ports[portid] = 0;
last_port = 0;
/*
* Each logical core is assigned a dedicated TX queue on each port.
*/
RTE_ETH_FOREACH_DEV(portid) {
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
if (nb_ports_in_mask % 2) {
l2fwd_dst_ports[portid] = last_port;
l2fwd_dst_ports[last_port] = portid;
} else
last_port = portid;
nb_ports_in_mask++;
}
/* >8 End of reset l2fwd_dst_ports. */
if (nb_ports_in_mask % 2) {
printf("Notice: odd number of ports in portmask.\n");
l2fwd_dst_ports[last_port] = last_port;
}
rx_lcore_id = 0;
qconf = NULL;
/* Initialize the port/queue configuration of each logical core */
RTE_ETH_FOREACH_DEV(portid) {
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
/* get the lcore_id for this port */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
lcore_queue_conf[rx_lcore_id].n_rx_port ==
l2fwd_rx_queue_per_lcore) {
rx_lcore_id++;
if (rx_lcore_id >= RTE_MAX_LCORE)
rte_exit(EXIT_FAILURE, "Not enough cores\n");
}
if (qconf != &lcore_queue_conf[rx_lcore_id])
/* Assigned a new logical core in the loop above. */
qconf = &lcore_queue_conf[rx_lcore_id];
qconf->rx_port_list[qconf->n_rx_port] = portid;
qconf->n_rx_port++;
printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
}
/* Initialise each port */
RTE_ETH_FOREACH_DEV(portid) {
struct rte_eth_dev_info dev_info;
struct rte_eth_rxconf rxq_conf;
struct rte_eth_txconf txq_conf;
struct rte_eth_conf local_port_conf = port_conf;
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %u\n", portid);
continue;
}
nb_ports_available++;
/* init port */
printf("Initializing port %u... ", portid);
fflush(stdout);
ret = rte_eth_dev_info_get(portid, &dev_info);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"Error during getting device (port %u) info: %s\n",
portid, strerror(-ret));
if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
local_port_conf.txmode.offloads |=
RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
/* Configure the RX and TX queues. 8< */
ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
ret, portid);
/* >8 End of configuring the RX and TX queues. */
ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
&nb_txd);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot adjust number of descriptors: err=%d, port=%u\n",
ret, portid);
ret = rte_eth_macaddr_get(portid,
&l2fwd_ports_eth_addr[portid]);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot get MAC address: err=%d, port=%u\n",
ret, portid);
/* init one RX queue */
fflush(stdout);
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = local_port_conf.rxmode.offloads;
/* RX queue initialization. 8< */
ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
rte_eth_dev_socket_id(portid),
&rxq_conf,
l2fwd_pktmbuf_pool);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
ret, portid);
/* >8 End of RX queue initialization. */
/* Init one TX queue on each port. 8< */
txq_conf = dev_info.default_txconf;
txq_conf.offloads = local_port_conf.txmode.offloads;
fflush(stdout);
ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
rte_eth_dev_socket_id(portid),
&txq_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_tx_queue_setup:err=%d, port=%u\n",
ret, portid);
/* >8 End of init one TX queue on each port. */
/* Initialize TX buffers */
tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
rte_eth_dev_socket_id(portid));
if (tx_buffer[portid] == NULL)
rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
portid);
rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
rte_eth_tx_buffer_count_callback,
&port_statistics[portid].dropped);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot set error callback for tx buffer on port %u\n",
portid);
/* Start device */
ret = rte_eth_dev_start(portid);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
ret, portid);
printf("done:\n");
ret = rte_eth_promiscuous_enable(portid);
if (ret != 0) {
rte_exit(EXIT_FAILURE,
"rte_eth_promiscuous_enable:err=%s, port=%u\n",
rte_strerror(-ret), portid);
return ret;
}
printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n",
portid,
RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid]));
/* initialize port stats */
memset(&port_statistics, 0, sizeof(port_statistics));
}
if (!nb_ports_available) {
rte_exit(EXIT_FAILURE,
"All available ports are disabled. Please set portmask.\n");
}
check_all_ports_link_status(l2fwd_enabled_port_mask);
drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
RTE_LCORE_FOREACH(lcore_id) {
qconf = &lcore_queue_conf[lcore_id];
rte_spinlock_init(&qconf->lock);
if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
if (qconf->n_rx_port == 0) {
RTE_LOG(INFO, L2FWD,
"lcore %u: no ports so no jobs stats context initialization\n",
lcore_id);
continue;
}
/* Add flush job. 8< */
/* Set fixed period by setting min = max = initial period. Set target to
* zero as it is irrelevant for this job.
*/
rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
drain_tsc, 0);
rte_timer_init(&qconf->flush_timer);
ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
lcore_id, &l2fwd_flush_job, NULL);
if (ret < 0) {
rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
lcore_id, rte_strerror(-ret));
}
/* >8 End of add flush job. */
for (i = 0; i < qconf->n_rx_port; i++) {
struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
portid = qconf->rx_port_list[i];
printf("Setting forward job for port %u\n", portid);
snprintf(name, RTE_DIM(name), "port %u fwd", portid);
/* Setup forward job. 8< */
/* Set min, max and initial period. Set target to MAX_PKT_BURST as
* this is desired optimal RX/TX burst size.
*/
rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
rte_timer_init(&qconf->rx_timers[i]);
ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
&l2fwd_fwd_job, (void *)(uintptr_t)i);
if (ret < 0) {
rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
}
/* >8 End of forward job. */
}
}
if (timer_period)
rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
else
RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
/* launch per-lcore init on every lcore */
rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN);
RTE_LCORE_FOREACH_WORKER(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
/* clean up the EAL */
rte_eal_cleanup();
return 0;
}
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