#include <stdint.h>
#include <stdio.h>
#include <inttypes.h>
#include <stdarg.h>
#include <errno.h>
#include <sys/queue.h>
#include <stdlib.h>
#include <getopt.h>
#include <string.h>
#include "common.h"
#define PKT_READ_SIZE ((uint16_t)32)
static uint8_t node_id;
#define MBQ_CAPACITY 32
static uint8_t output_ports[RTE_MAX_ETHPORTS];
static struct tx_stats *tx_stats;
static struct filter_stats *filter_stats;
static void
usage(const char *progname)
{
printf("Usage: %s [EAL args] -- -n <node_id>\n\n", progname);
}
static int
parse_node_num(const char *node)
{
char *end = NULL;
unsigned long temp;
if (node == NULL || *node == '\0')
return -1;
temp = strtoul(node, &end, 10);
if (end == NULL || *end != '\0')
return -1;
node_id = (uint8_t)temp;
return 0;
}
static int
parse_app_args(int argc, char *argv[])
{
int option_index, opt;
char **argvopt = argv;
const char *progname = NULL;
static struct option lgopts[] = {
{NULL, 0, 0, 0 }
};
progname = argv[0];
while ((opt = getopt_long(argc, argvopt, "n:", lgopts,
&option_index)) != EOF) {
switch (opt) {
case 'n':
if (parse_node_num(optarg) != 0) {
usage(progname);
return -1;
}
break;
default:
usage(progname);
return -1;
}
}
return 0;
}
static void
flush_tx_error_callback(
struct rte_mbuf **unsent, uint16_t count,
void *userdata) {
int i;
uint8_t port_id = (uintptr_t)userdata;
tx_stats->tx_drop[port_id] += count;
for (i = 0; i < count; i++)
}
static void
configure_tx_buffer(uint8_t port_id, uint16_t size)
{
int ret;
if (tx_buffer[port_id] == NULL)
rte_exit(EXIT_FAILURE,
"Cannot allocate buffer for tx "
"on port %u\n", (unsigned int) port_id);
flush_tx_error_callback, (void *)(intptr_t)port_id);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot set error callback for "
"tx buffer on port %u\n", (unsigned int) port_id);
}
static void
configure_output_ports(const struct shared_info *info)
{
int i;
if (info->num_ports > RTE_MAX_ETHPORTS)
rte_exit(EXIT_FAILURE,
"Too many ethernet ports. "
"RTE_MAX_ETHPORTS = %u\n",
(unsigned int)RTE_MAX_ETHPORTS);
for (i = 0; i < info->num_ports - 1; i += 2) {
uint8_t p1 = info->id[i];
uint8_t p2 = info->id[i+1];
output_ports[p1] = p2;
output_ports[p2] = p1;
configure_tx_buffer(p1, MBQ_CAPACITY);
configure_tx_buffer(p2, MBQ_CAPACITY);
}
}
create_hash_table(const struct shared_info *info)
{
uint32_t num_flows_node = info->num_flows / info->num_nodes;
.key_len = sizeof(uint32_t),
.hash_func_init_val = 0,
};
snprintf(name, sizeof(name), "hash_table_%d", node_id);
if (h == NULL)
"Problem creating the hash table for node %d\n",
node_id);
return h;
}
static void
populate_hash_table(
const struct rte_hash *h,
const struct shared_info *info)
{
unsigned int i;
int32_t ret;
uint32_t ip_dst;
uint32_t num_flows_node = 0;
uint64_t target_node;
for (i = 0; i < info->num_flows; i++) {
target_node = i % info->num_nodes;
if (target_node != node_id)
continue;
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Unable to add entry %u "
"in hash table\n", i);
else
num_flows_node++;
}
printf("Hash table: Adding 0x%x keys\n", num_flows_node);
}
static inline void
{
int sent;
const uint8_t in_port = buf->
port;
const uint8_t out_port = output_ports[in_port];
if (sent)
tx_stats->tx[out_port] += sent;
}
static inline void
handle_packets(
struct rte_hash *h,
struct rte_mbuf **bufs, uint16_t num_packets)
{
uint32_t ipv4_dst_ip[PKT_READ_SIZE];
const void *key_ptrs[PKT_READ_SIZE];
unsigned int i;
int32_t positions[PKT_READ_SIZE] = {0};
for (i = 0; i < num_packets; i++) {
key_ptrs[i] = &ipv4_dst_ip[i];
}
for (i = 0; i < num_packets; i++) {
if (
likely(positions[i] >= 0)) {
filter_stats->passed++;
transmit_packet(bufs[i]);
} else {
filter_stats->drop++;
}
}
}
int
main(int argc, char *argv[])
{
struct shared_info *info;
int need_flush = 0;
int retval;
void *pkts[PKT_READ_SIZE];
uint16_t sent;
if (retval < 0)
return -1;
argc -= retval;
argv += retval;
if (parse_app_args(argc, argv) < 0)
rte_exit(EXIT_FAILURE,
"Invalid command-line arguments\n");
rte_exit(EXIT_FAILURE,
"No Ethernet ports - bye\n");
if (rx_ring == NULL)
rte_exit(EXIT_FAILURE,
"Cannot get RX ring - "
"is server process running?\n");
if (mp == NULL)
rte_exit(EXIT_FAILURE,
"Cannot get mempool for mbufs\n");
if (mz == NULL)
rte_exit(EXIT_FAILURE,
"Cannot get port info structure\n");
tx_stats = &(info->tx_stats[node_id]);
filter_stats = &(info->filter_stats[node_id]);
configure_output_ports(info);
h = create_hash_table(info);
populate_hash_table(h, info);
RTE_LOG(INFO, APP,
"Finished Process Init.\n");
printf("\nNode process %d handling packets\n", node_id);
printf("[Press Ctrl-C to quit ...]\n");
for (;;) {
uint16_t rx_pkts = PKT_READ_SIZE;
while (rx_pkts > 0 &&
rx_pkts) != 0))
PKT_READ_SIZE);
if (need_flush)
for (port = 0; port < info->num_ports; port++) {
info->id[port],
node_id,
tx_buffer[port]);
tx_stats->tx[port] += sent;
}
need_flush = 0;
continue;
}
handle_packets(h, (
struct rte_mbuf **)pkts, rx_pkts);
need_flush = 1;
}
}