#include <stdint.h>
#include <inttypes.h>
#include <unistd.h>
#include <signal.h>
#include <getopt.h>
#define RX_RING_SIZE 256
#define TX_RING_SIZE 512
#define NUM_MBUFS ((64*1024)-1)
#define MBUF_CACHE_SIZE 250
#define BURST_SIZE 32
#define RTE_RING_SZ 1024
#ifdef DEBUG
#define LOG_LEVEL RTE_LOG_DEBUG
#define LOG_DEBUG(log_type, fmt, args...) do { \
RTE_LOG(DEBUG, log_type, fmt, ##args); \
} while (0)
#else
#define LOG_LEVEL RTE_LOG_INFO
#define LOG_DEBUG(log_type, fmt, args...) do {} while (0)
#endif
#define RTE_LOGTYPE_DISTRAPP RTE_LOGTYPE_USER1
static uint32_t enabled_port_mask;
volatile uint8_t quit_signal;
volatile uint8_t quit_signal_rx;
static volatile struct app_stats {
struct {
uint64_t rx_pkts;
uint64_t returned_pkts;
uint64_t enqueued_pkts;
struct {
uint64_t dequeue_pkts;
uint64_t tx_pkts;
} app_stats;
},
.txmode = {
},
.rx_adv_conf = {
.rss_conf = {
.rss_hf = ETH_RSS_IP | ETH_RSS_UDP |
}
},
};
struct output_buffer {
unsigned count;
};
static inline int
{
int retval;
uint16_t q;
return -1;
if (retval != 0)
return retval;
for (q = 0; q < rxRings; q++) {
rte_eth_dev_socket_id(port),
NULL, mbuf_pool);
if (retval < 0)
return retval;
}
for (q = 0; q < txRings; q++) {
rte_eth_dev_socket_id(port),
NULL);
if (retval < 0)
return retval;
}
if (retval < 0)
return retval;
if (!link.link_status) {
sleep(1);
}
if (!link.link_status) {
printf("Link down on port %"PRIu8"\n", port);
return 0;
}
printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
" %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
(unsigned)port,
addr.addr_bytes[0], addr.addr_bytes[1],
addr.addr_bytes[2], addr.addr_bytes[3],
addr.addr_bytes[4], addr.addr_bytes[5]);
return 0;
}
struct lcore_params {
unsigned worker_id;
struct rte_distributor *d;
};
static void
quit_workers(
struct rte_distributor *d,
struct rte_mempool *p)
{
unsigned i;
for (i = 0; i < num_workers; i++)
bufs[i]->hash.
rss = i << 1;
}
static int
lcore_rx(struct lcore_params *p)
{
struct rte_distributor *d = p->d;
uint8_t port;
for (port = 0; port < nb_ports; port++) {
if ((enabled_port_mask & (1 << port)) == 0)
continue;
if (rte_eth_dev_socket_id(port) > 0 &&
rte_eth_dev_socket_id(port) != socket_id)
printf("WARNING, port %u is on remote NUMA node to "
"RX thread.\n\tPerformance will not "
"be optimal.\n", port);
}
port = 0;
while (!quit_signal_rx) {
if ((enabled_port_mask & (1 << port)) == 0) {
if (++port == nb_ports)
port = 0;
continue;
}
BURST_SIZE);
app_stats.rx.rx_pkts += nb_rx;
bufs, BURST_SIZE*2);
app_stats.rx.returned_pkts += nb_ret;
continue;
app_stats.rx.enqueued_pkts += sent;
LOG_DEBUG(DISTRAPP, "%s:Packet loss due to full ring\n", __func__);
while (sent < nb_ret)
}
if (++port == nb_ports)
port = 0;
}
quit_signal = 1;
quit_workers(d, mem_pool);
return 0;
}
static inline void
flush_one_port(struct output_buffer *outbuf, uint8_t outp)
{
outbuf->count);
app_stats.tx.tx_pkts += nb_tx;
LOG_DEBUG(DISTRAPP, "%s:Packet loss with tx_burst\n", __func__);
do {
} while (++nb_tx < outbuf->count);
}
outbuf->count = 0;
}
static inline void
flush_all_ports(struct output_buffer *tx_buffers, uint8_t nb_ports)
{
uint8_t outp;
for (outp = 0; outp < nb_ports; outp++) {
if ((enabled_port_mask & (1 << outp)) == 0)
continue;
if (tx_buffers[outp].count == 0)
continue;
flush_one_port(&tx_buffers[outp], outp);
}
}
static int
{
static struct output_buffer tx_buffers[RTE_MAX_ETHPORTS];
uint8_t port;
for (port = 0; port < nb_ports; port++) {
if ((enabled_port_mask & (1 << port)) == 0)
continue;
if (rte_eth_dev_socket_id(port) > 0 &&
rte_eth_dev_socket_id(port) != socket_id)
printf("WARNING, port %u is on remote NUMA node to "
"TX thread.\n\tPerformance will not "
"be optimal.\n", port);
}
while (!quit_signal) {
for (port = 0; port < nb_ports; port++) {
if ((enabled_port_mask & (1 << port)) == 0)
continue;
(void *)bufs, BURST_SIZE);
app_stats.tx.dequeue_pkts += nb_rx;
flush_all_ports(tx_buffers, nb_ports);
continue;
}
uint16_t i;
_mm_prefetch((void *)bufs[0], 0);
_mm_prefetch((void *)bufs[1], 0);
_mm_prefetch((void *)bufs[2], 0);
for (i = 0; i < nb_rx; i++) {
struct output_buffer *outbuf;
uint8_t outp;
_mm_prefetch((void *)bufs[i + 3], 0);
if ((enabled_port_mask & (1 << outp)) == 0)
continue;
outbuf = &tx_buffers[outp];
outbuf->mbufs[outbuf->count++] = bufs[i];
if (outbuf->count == BURST_SIZE)
flush_one_port(outbuf, outp);
}
}
}
return 0;
}
static void
int_handler(int sig_num)
{
printf("Exiting on signal %d\n", sig_num);
quit_signal_rx = 1;
}
static void
print_stats(void)
{
unsigned i;
printf("\nRX thread stats:\n");
printf(" - Received: %"PRIu64"\n", app_stats.rx.rx_pkts);
printf(" - Processed: %"PRIu64"\n", app_stats.rx.returned_pkts);
printf(" - Enqueued: %"PRIu64"\n", app_stats.rx.enqueued_pkts);
printf("\nTX thread stats:\n");
printf(" - Dequeued: %"PRIu64"\n", app_stats.tx.dequeue_pkts);
printf(" - Transmitted: %"PRIu64"\n", app_stats.tx.tx_pkts);
printf("\nPort %u stats:\n", i);
printf(" - Pkts in: %"PRIu64"\n", eth_stats.ipackets);
printf(" - Pkts out: %"PRIu64"\n", eth_stats.opackets);
printf(" - In Errs: %"PRIu64"\n", eth_stats.ierrors);
printf(" - Out Errs: %"PRIu64"\n", eth_stats.oerrors);
printf(" - Mbuf Errs: %"PRIu64"\n", eth_stats.rx_nombuf);
}
}
static int
lcore_worker(struct lcore_params *p)
{
struct rte_distributor *d = p->d;
const unsigned id = p->worker_id;
printf(
"\nCore %u acting as worker core.\n",
rte_lcore_id());
while (!quit_signal) {
}
return 0;
}
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;
pm = strtoul(portmask, &end, 16);
if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (pm == 0)
return -1;
return pm;
}
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}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:",
lgopts, &option_index)) != EOF) {
switch (opt) {
case 'p':
enabled_port_mask = parse_portmask(optarg);
if (enabled_port_mask == 0) {
printf("invalid portmask\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 = 0;
return 0;
}
int
main(int argc, char *argv[])
{
struct rte_distributor *d;
unsigned lcore_id, worker_id = 0;
unsigned nb_ports;
uint8_t portid;
uint8_t nb_ports_available;
signal(SIGINT, int_handler);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Error with EAL initialization\n");
argc -= ret;
argv += ret;
ret = parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Invalid distributor parameters\n");
rte_exit(EXIT_FAILURE,
"Error, This application needs at "
"least 3 logical cores to run:\n"
"1 lcore for packet RX and distribution\n"
"1 lcore for packet TX\n"
"and at least 1 lcore for worker threads\n");
if (nb_ports == 0)
rte_exit(EXIT_FAILURE,
"Error: no ethernet ports detected\n");
if (nb_ports != 1 && (nb_ports & 1))
rte_exit(EXIT_FAILURE,
"Error: number of ports must be even, except "
"when using a single port\n");
NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE,
"Cannot create mbuf pool\n");
nb_ports_available = nb_ports;
for (portid = 0; portid < nb_ports; portid++) {
if ((enabled_port_mask & (1 << portid)) == 0) {
printf("\nSkipping disabled port %d\n", portid);
nb_ports_available--;
continue;
}
printf("Initializing port %u... done\n", (unsigned) portid);
if (port_init(portid, mbuf_pool) != 0)
rte_exit(EXIT_FAILURE,
"Cannot initialize port %"PRIu8
"\n",
portid);
}
if (!nb_ports_available) {
"All available ports are disabled. Please set portmask.\n");
}
if (d == NULL)
rte_exit(EXIT_FAILURE,
"Cannot create distributor\n");
if (output_ring == NULL)
rte_exit(EXIT_FAILURE,
"Cannot create output ring\n");
output_ring, lcore_id);
else {
struct lcore_params *p =
if (!p)
*p = (struct lcore_params){worker_id, d, output_ring, mbuf_pool};
p, lcore_id);
}
worker_id++;
}
struct lcore_params p = { 0, d, output_ring, mbuf_pool};
lcore_rx(&p);
return -1;
}
print_stats();
return 0;
}