#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>
static volatile bool force_quit;
static int mac_updating = 1;
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100
#define MEMPOOL_CACHE_SIZE 256
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
static uint32_t l2fwd_enabled_port_mask = 0;
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
static unsigned int l2fwd_rx_queue_per_lcore = 1;
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
struct lcore_queue_conf {
unsigned n_rx_port;
unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
},
.txmode = {
},
};
struct l2fwd_port_statistics {
uint64_t tx;
uint64_t rx;
uint64_t dropped;
struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
#define MAX_TIMER_PERIOD 86400
static uint64_t timer_period = 10;
static void
print_stats(void)
{
uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
unsigned portid;
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' };
printf("%s%s", clr, topLeft);
printf("\nPort statistics ====================================");
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
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,
total_packets_tx,
total_packets_rx,
total_packets_dropped);
printf("\n====================================================\n");
}
static void
l2fwd_mac_updating(
struct rte_mbuf *m,
unsigned dest_portid)
{
void *tmp;
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
}
static void
l2fwd_simple_forward(
struct rte_mbuf *m,
unsigned portid)
{
unsigned dst_port;
int sent;
dst_port = l2fwd_dst_ports[portid];
if (mac_updating)
l2fwd_mac_updating(m, dst_port);
buffer = tx_buffer[dst_port];
if (sent)
port_statistics[dst_port].tx += sent;
}
static void
l2fwd_main_loop(void)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
int sent;
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
unsigned i, j, portid, nb_rx;
struct lcore_queue_conf *qconf;
const uint64_t drain_tsc = (
rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
BURST_TX_DRAIN_US;
prev_tsc = 0;
timer_tsc = 0;
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);
}
while (!force_quit) {
cur_tsc = rte_rdtsc();
diff_tsc = cur_tsc - prev_tsc;
for (i = 0; i < qconf->n_rx_port; i++) {
portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
buffer = tx_buffer[portid];
if (sent)
port_statistics[portid].tx += sent;
}
if (timer_period > 0) {
timer_tsc += diff_tsc;
if (
unlikely(timer_tsc >= timer_period)) {
print_stats();
timer_tsc = 0;
}
}
}
prev_tsc = cur_tsc;
}
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
pkts_burst, MAX_PKT_BURST);
port_statistics[portid].rx += nb_rx;
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
l2fwd_simple_forward(m, portid);
}
}
}
}
static int
l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
{
l2fwd_main_loop();
return 0;
}
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"
" --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
" When enabled:\n"
" - The source MAC address is replaced by the TX port MAC address\n"
" - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
prgname);
}
static int
l2fwd_parse_portmask(const char *portmask)
{
char *end = NULL;
unsigned long pm;
pm = strtoul(portmask, &end, 16);
if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (pm == 0)
return -1;
return pm;
}
static unsigned int
l2fwd_parse_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
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;
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;
}
static const char short_options[] =
"p:"
"q:"
"T:"
;
#define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
#define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
enum {
CMD_LINE_OPT_MIN_NUM = 256,
};
static const struct option lgopts[] = {
{ CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
{ CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
{NULL, 0, 0, 0}
};
static int
l2fwd_parse_args(int argc, char **argv)
{
int opt, ret, timer_secs;
char **argvopt;
int option_index;
char *prgname = argv[0];
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, short_options,
lgopts, &option_index)) != EOF) {
switch (opt) {
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;
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;
case 'T':
timer_secs = l2fwd_parse_timer_period(optarg);
if (timer_secs < 0) {
printf("invalid timer period\n");
l2fwd_usage(prgname);
return -1;
}
timer_period = timer_secs;
break;
case 0:
break;
default:
l2fwd_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
ret = optind-1;
optind = 1;
return ret;
}
static void
check_all_ports_link_status(uint32_t port_mask)
{
#define CHECK_INTERVAL 100
#define MAX_CHECK_TIME 90
uint16_t portid;
uint8_t count, all_ports_up, print_flag = 0;
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
if (force_quit)
return;
all_ports_up = 1;
if (force_quit)
return;
if ((port_mask & (1 << portid)) == 0)
continue;
memset(&link, 0, sizeof(link));
if (print_flag == 1) {
if (link.link_status)
printf(
"Port%d Link Up. Speed %u Mbps - %s\n",
portid, link.link_speed,
("full-duplex") : ("half-duplex\n"));
else
printf("Port %d Link Down\n", portid);
continue;
}
all_ports_up = 0;
break;
}
}
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
}
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
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)
{
struct lcore_queue_conf *qconf;
int ret;
uint16_t nb_ports;
uint16_t nb_ports_available = 0;
uint16_t portid, last_port;
unsigned lcore_id, rx_lcore_id;
unsigned nb_ports_in_mask = 0;
unsigned int nb_lcores = 0;
unsigned int nb_mbufs;
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Invalid EAL arguments\n");
argc -= ret;
argv += ret;
force_quit = false;
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
ret = l2fwd_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Invalid L2FWD arguments\n");
printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
if (nb_ports == 0)
rte_exit(EXIT_FAILURE,
"No Ethernet ports - bye\n");
if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
rte_exit(EXIT_FAILURE,
"Invalid portmask; possible (0x%x)\n",
(1 << nb_ports) - 1);
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
l2fwd_dst_ports[portid] = 0;
last_port = 0;
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++;
}
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;
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
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]) {
qconf = &lcore_queue_conf[rx_lcore_id];
nb_lcores++;
}
qconf->rx_port_list[qconf->n_rx_port] = portid;
qconf->n_rx_port++;
printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
}
nb_mbufs =
RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
if (l2fwd_pktmbuf_pool == NULL)
rte_exit(EXIT_FAILURE,
"Cannot init mbuf pool\n");
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %u\n", portid);
continue;
}
nb_ports_available++;
printf("Initializing port %u... ", portid);
fflush(stdout);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot configure device: err=%d, port=%u\n",
ret, portid);
&nb_txd);
if (ret < 0)
"Cannot adjust number of descriptors: err=%d, port=%u\n",
ret, portid);
fflush(stdout);
rxq_conf = dev_info.default_rxconf;
&rxq_conf,
l2fwd_pktmbuf_pool);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_rx_queue_setup:err=%d, port=%u\n",
ret, portid);
fflush(stdout);
txq_conf = dev_info.default_txconf;
&txq_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_tx_queue_setup:err=%d, port=%u\n",
ret, portid);
if (tx_buffer[portid] == NULL)
rte_exit(EXIT_FAILURE,
"Cannot allocate buffer for tx on port %u\n",
portid);
&port_statistics[portid].dropped);
if (ret < 0)
"Cannot set error callback for tx buffer on port %u\n",
portid);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_dev_start:err=%d, port=%u\n",
ret, portid);
printf("done: \n");
printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
portid,
l2fwd_ports_eth_addr[portid].addr_bytes[0],
l2fwd_ports_eth_addr[portid].addr_bytes[1],
l2fwd_ports_eth_addr[portid].addr_bytes[2],
l2fwd_ports_eth_addr[portid].addr_bytes[3],
l2fwd_ports_eth_addr[portid].addr_bytes[4],
l2fwd_ports_eth_addr[portid].addr_bytes[5]);
memset(&port_statistics, 0, sizeof(port_statistics));
}
if (!nb_ports_available) {
"All available ports are disabled. Please set portmask.\n");
}
check_all_ports_link_status(l2fwd_enabled_port_mask);
ret = 0;
ret = -1;
break;
}
}
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
printf("Closing port %d...", portid);
printf(" Done\n");
}
printf("Bye...\n");
return ret;
}