DPDK  20.11.3
examples/vmdq/main.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdint.h>
#include <sys/queue.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <inttypes.h>
#include <getopt.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_interrupts.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#define MAX_QUEUES 1024
/*
* 1024 queues require to meet the needs of a large number of vmdq_pools.
* (RX/TX_queue_nb * RX/TX_ring_descriptors_nb) per port.
*/
#define NUM_MBUFS_PER_PORT (MAX_QUEUES * RTE_MAX(RTE_TEST_RX_DESC_DEFAULT, \
RTE_TEST_TX_DESC_DEFAULT))
#define MBUF_CACHE_SIZE 64
#define MAX_PKT_BURST 32
/*
* Configurable number of RX/TX ring descriptors
*/
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024
#define INVALID_PORT_ID 0xFF
/* mask of enabled ports */
static uint32_t enabled_port_mask;
/* number of pools (if user does not specify any, 8 by default */
static uint32_t num_queues = 8;
static uint32_t num_pools = 8;
static uint8_t rss_enable;
/* empty vmdq configuration structure. Filled in programatically */
static const struct rte_eth_conf vmdq_conf_default = {
.rxmode = {
.split_hdr_size = 0,
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
.rx_adv_conf = {
/*
* should be overridden separately in code with
* appropriate values
*/
.vmdq_rx_conf = {
.nb_queue_pools = ETH_8_POOLS,
.enable_default_pool = 0,
.default_pool = 0,
.nb_pool_maps = 0,
.pool_map = {{0, 0},},
},
},
};
static unsigned lcore_ids[RTE_MAX_LCORE];
static uint16_t ports[RTE_MAX_ETHPORTS];
static unsigned num_ports;
/* array used for printing out statistics */
volatile unsigned long rxPackets[MAX_QUEUES] = {0};
const uint16_t vlan_tags[] = {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63,
};
const uint16_t num_vlans = RTE_DIM(vlan_tags);
static uint16_t num_pf_queues, num_vmdq_queues;
static uint16_t vmdq_pool_base, vmdq_queue_base;
/* pool mac addr template, pool mac addr is like: 52 54 00 12 port# pool# */
static struct rte_ether_addr pool_addr_template = {
.addr_bytes = {0x52, 0x54, 0x00, 0x12, 0x00, 0x00}
};
/* ethernet addresses of ports */
static struct rte_ether_addr vmdq_ports_eth_addr[RTE_MAX_ETHPORTS];
#define MAX_QUEUE_NUM_10G 128
#define MAX_QUEUE_NUM_1G 8
#define MAX_POOL_MAP_NUM_10G 64
#define MAX_POOL_MAP_NUM_1G 32
#define MAX_POOL_NUM_10G 64
#define MAX_POOL_NUM_1G 8
/*
* Builds up the correct configuration for vmdq based on the vlan tags array
* given above, and determine the queue number and pool map number according to
* valid pool number
*/
static inline int
get_eth_conf(struct rte_eth_conf *eth_conf, uint32_t num_pools)
{
struct rte_eth_vmdq_rx_conf conf;
unsigned i;
conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
conf.nb_pool_maps = num_pools;
conf.default_pool = 0; /* set explicit value, even if not used */
for (i = 0; i < conf.nb_pool_maps; i++) {
conf.pool_map[i].vlan_id = vlan_tags[i];
conf.pool_map[i].pools = (1UL << (i % num_pools));
}
(void)(rte_memcpy(eth_conf, &vmdq_conf_default, sizeof(*eth_conf)));
(void)(rte_memcpy(&eth_conf->rx_adv_conf.vmdq_rx_conf, &conf,
sizeof(eth_conf->rx_adv_conf.vmdq_rx_conf)));
if (rss_enable) {
eth_conf->rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP |
ETH_RSS_UDP |
ETH_RSS_TCP |
ETH_RSS_SCTP;
}
return 0;
}
/*
* Initialises a given port using global settings and with the rx buffers
* coming from the mbuf_pool passed as parameter
*/
static inline int
port_init(uint16_t port, struct rte_mempool *mbuf_pool)
{
struct rte_eth_dev_info dev_info;
struct rte_eth_rxconf *rxconf;
struct rte_eth_txconf *txconf;
struct rte_eth_conf port_conf;
uint16_t rxRings, txRings;
uint16_t rxRingSize = RTE_TEST_RX_DESC_DEFAULT;
uint16_t txRingSize = RTE_TEST_TX_DESC_DEFAULT;
int retval;
uint16_t q;
uint16_t queues_per_pool;
uint32_t max_nb_pools;
uint64_t rss_hf_tmp;
/*
* The max pool number from dev_info will be used to validate the pool
* number specified in cmd line
*/
retval = rte_eth_dev_info_get(port, &dev_info);
if (retval != 0) {
printf("Error during getting device (port %u) info: %s\n",
port, strerror(-retval));
return retval;
}
max_nb_pools = (uint32_t)dev_info.max_vmdq_pools;
/*
* We allow to process part of VMDQ pools specified by num_pools in
* command line.
*/
if (num_pools > max_nb_pools) {
printf("num_pools %d >max_nb_pools %d\n",
num_pools, max_nb_pools);
return -1;
}
retval = get_eth_conf(&port_conf, max_nb_pools);
if (retval < 0)
return retval;
/*
* NIC queues are divided into pf queues and vmdq queues.
*/
/* There is assumption here all ports have the same configuration! */
num_pf_queues = dev_info.max_rx_queues - dev_info.vmdq_queue_num;
queues_per_pool = dev_info.vmdq_queue_num / dev_info.max_vmdq_pools;
num_vmdq_queues = num_pools * queues_per_pool;
num_queues = num_pf_queues + num_vmdq_queues;
vmdq_queue_base = dev_info.vmdq_queue_base;
vmdq_pool_base = dev_info.vmdq_pool_base;
printf("pf queue num: %u, configured vmdq pool num: %u,"
" each vmdq pool has %u queues\n",
num_pf_queues, num_pools, queues_per_pool);
printf("vmdq queue base: %d pool base %d\n",
vmdq_queue_base, vmdq_pool_base);
return -1;
rss_hf_tmp = port_conf.rx_adv_conf.rss_conf.rss_hf;
if (port_conf.rx_adv_conf.rss_conf.rss_hf != rss_hf_tmp) {
printf("Port %u modified RSS hash function based on hardware support,"
"requested:%#"PRIx64" configured:%#"PRIx64"\n",
port,
rss_hf_tmp,
}
/*
* Though in this example, we only receive packets from the first queue
* of each pool and send packets through first rte_lcore_count() tx
* queues of vmdq queues, all queues including pf queues are setup.
* This is because VMDQ queues doesn't always start from zero, and the
* PMD layer doesn't support selectively initialising part of rx/tx
* queues.
*/
rxRings = (uint16_t)dev_info.max_rx_queues;
txRings = (uint16_t)dev_info.max_tx_queues;
retval = rte_eth_dev_info_get(port, &dev_info);
if (retval != 0) {
printf("Error during getting device (port %u) info: %s\n",
port, strerror(-retval));
return retval;
}
port_conf.txmode.offloads |=
retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
if (retval != 0)
return retval;
retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rxRingSize,
&txRingSize);
if (retval != 0)
return retval;
if (RTE_MAX(rxRingSize, txRingSize) > RTE_MAX(RTE_TEST_RX_DESC_DEFAULT,
RTE_TEST_TX_DESC_DEFAULT)) {
printf("Mbuf pool has an insufficient size for port %u.\n",
port);
return -1;
}
rxconf = &dev_info.default_rxconf;
rxconf->rx_drop_en = 1;
txconf = &dev_info.default_txconf;
txconf->offloads = port_conf.txmode.offloads;
for (q = 0; q < rxRings; q++) {
retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
rxconf,
mbuf_pool);
if (retval < 0) {
printf("initialise rx queue %d failed\n", q);
return retval;
}
}
for (q = 0; q < txRings; q++) {
retval = rte_eth_tx_queue_setup(port, q, txRingSize,
txconf);
if (retval < 0) {
printf("initialise tx queue %d failed\n", q);
return retval;
}
}
retval = rte_eth_dev_start(port);
if (retval < 0) {
printf("port %d start failed\n", port);
return retval;
}
retval = rte_eth_macaddr_get(port, &vmdq_ports_eth_addr[port]);
if (retval < 0) {
printf("port %d MAC address get failed: %s\n", port,
rte_strerror(-retval));
return retval;
}
printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
" %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
(unsigned)port,
vmdq_ports_eth_addr[port].addr_bytes[0],
vmdq_ports_eth_addr[port].addr_bytes[1],
vmdq_ports_eth_addr[port].addr_bytes[2],
vmdq_ports_eth_addr[port].addr_bytes[3],
vmdq_ports_eth_addr[port].addr_bytes[4],
vmdq_ports_eth_addr[port].addr_bytes[5]);
/*
* Set mac for each pool.
* There is no default mac for the pools in i40.
* Removes this after i40e fixes this issue.
*/
for (q = 0; q < num_pools; q++) {
struct rte_ether_addr mac;
mac = pool_addr_template;
mac.addr_bytes[4] = port;
mac.addr_bytes[5] = q;
printf("Port %u vmdq pool %u set mac %02x:%02x:%02x:%02x:%02x:%02x\n",
port, q,
mac.addr_bytes[0], mac.addr_bytes[1],
mac.addr_bytes[2], mac.addr_bytes[3],
mac.addr_bytes[4], mac.addr_bytes[5]);
retval = rte_eth_dev_mac_addr_add(port, &mac,
q + vmdq_pool_base);
if (retval) {
printf("mac addr add failed at pool %d\n", q);
return retval;
}
}
return 0;
}
/* Check num_pools parameter and set it if OK*/
static int
vmdq_parse_num_pools(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 (num_pools > num_vlans) {
printf("num_pools %d > num_vlans %d\n", num_pools, num_vlans);
return -1;
}
num_pools = n;
return 0;
}
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 0;
return pm;
}
/* Display usage */
static void
vmdq_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK]\n"
" --nb-pools NP: number of pools\n"
" --enable-rss: enable RSS (disabled by default)\n",
prgname);
}
/* Parse the argument (num_pools) given in the command line of the application */
static int
vmdq_parse_args(int argc, char **argv)
{
int opt;
int option_index;
unsigned i;
const char *prgname = argv[0];
static struct option long_option[] = {
{"nb-pools", required_argument, NULL, 0},
{"enable-rss", 0, NULL, 0},
{NULL, 0, 0, 0}
};
/* Parse command line */
while ((opt = getopt_long(argc, argv, "p:", long_option,
&option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
enabled_port_mask = parse_portmask(optarg);
if (enabled_port_mask == 0) {
printf("invalid portmask\n");
vmdq_usage(prgname);
return -1;
}
break;
case 0:
if (!strcmp(long_option[option_index].name,
"nb-pools")) {
if (vmdq_parse_num_pools(optarg) == -1) {
printf("invalid number of pools\n");
vmdq_usage(prgname);
return -1;
}
}
if (!strcmp(long_option[option_index].name,
"enable-rss"))
rss_enable = 1;
break;
default:
vmdq_usage(prgname);
return -1;
}
}
for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
if (enabled_port_mask & (1 << i))
ports[num_ports++] = (uint8_t)i;
}
if (num_ports < 2 || num_ports % 2) {
printf("Current enabled port number is %u,"
"but it should be even and at least 2\n", num_ports);
return -1;
}
return 0;
}
static void
update_mac_address(struct rte_mbuf *m, unsigned dst_port)
{
struct rte_ether_hdr *eth;
void *tmp;
eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
/* 02:00:00:00:00:xx */
tmp = &eth->d_addr.addr_bytes[0];
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
/* src addr */
rte_ether_addr_copy(&vmdq_ports_eth_addr[dst_port], &eth->s_addr);
}
/* When we receive a HUP signal, print out our stats */
static void
sighup_handler(int signum)
{
unsigned int q = vmdq_queue_base;
for (; q < num_queues; q++) {
if ((q - vmdq_queue_base) % (num_vmdq_queues / num_pools) == 0)
printf("\nPool %u: ", (q - vmdq_queue_base) /
(num_vmdq_queues / num_pools));
printf("%lu ", rxPackets[q]);
}
printf("\nFinished handling signal %d\n", signum);
}
/*
* Main thread that does the work, reading from INPUT_PORT
* and writing to OUTPUT_PORT
*/
static int
lcore_main(__rte_unused void *dummy)
{
const uint16_t lcore_id = (uint16_t)rte_lcore_id();
const uint16_t num_cores = (uint16_t)rte_lcore_count();
uint16_t core_id = 0;
uint16_t startQueue, endQueue;
uint16_t q, i, p;
const uint16_t remainder = (uint16_t)(num_vmdq_queues % num_cores);
for (i = 0; i < num_cores; i++)
if (lcore_ids[i] == lcore_id) {
core_id = i;
break;
}
if (remainder != 0) {
if (core_id < remainder) {
startQueue = (uint16_t)(core_id *
(num_vmdq_queues / num_cores + 1));
endQueue = (uint16_t)(startQueue +
(num_vmdq_queues / num_cores) + 1);
} else {
startQueue = (uint16_t)(core_id *
(num_vmdq_queues / num_cores) +
remainder);
endQueue = (uint16_t)(startQueue +
(num_vmdq_queues / num_cores));
}
} else {
startQueue = (uint16_t)(core_id *
(num_vmdq_queues / num_cores));
endQueue = (uint16_t)(startQueue +
(num_vmdq_queues / num_cores));
}
/* vmdq queue idx doesn't always start from zero.*/
startQueue += vmdq_queue_base;
endQueue += vmdq_queue_base;
printf("core %u(lcore %u) reading queues %i-%i\n", (unsigned)core_id,
(unsigned)lcore_id, startQueue, endQueue - 1);
if (startQueue == endQueue) {
printf("lcore %u has nothing to do\n", lcore_id);
return 0;
}
for (;;) {
struct rte_mbuf *buf[MAX_PKT_BURST];
const uint16_t buf_size = RTE_DIM(buf);
for (p = 0; p < num_ports; p++) {
const uint8_t sport = ports[p];
/* 0 <-> 1, 2 <-> 3 etc */
const uint8_t dport = ports[p ^ 1];
if ((sport == INVALID_PORT_ID) || (dport == INVALID_PORT_ID))
continue;
for (q = startQueue; q < endQueue; q++) {
const uint16_t rxCount = rte_eth_rx_burst(sport,
q, buf, buf_size);
if (unlikely(rxCount == 0))
continue;
rxPackets[q] += rxCount;
for (i = 0; i < rxCount; i++)
update_mac_address(buf[i], dport);
const uint16_t txCount = rte_eth_tx_burst(dport,
vmdq_queue_base + core_id,
buf,
rxCount);
if (txCount != rxCount) {
for (i = txCount; i < rxCount; i++)
}
}
}
}
}
/*
* Update the global var NUM_PORTS and array PORTS according to system ports number
* and return valid ports number
*/
static unsigned check_ports_num(unsigned nb_ports)
{
unsigned valid_num_ports = num_ports;
unsigned portid;
if (num_ports > nb_ports) {
printf("\nSpecified port number(%u) exceeds total system port number(%u)\n",
num_ports, nb_ports);
num_ports = nb_ports;
}
for (portid = 0; portid < num_ports; portid++) {
if (!rte_eth_dev_is_valid_port(ports[portid])) {
printf("\nSpecified port ID(%u) is not valid\n",
ports[portid]);
ports[portid] = INVALID_PORT_ID;
valid_num_ports--;
}
}
return valid_num_ports;
}
/* Main function, does initialisation and calls the per-lcore functions */
int
main(int argc, char *argv[])
{
struct rte_mempool *mbuf_pool;
unsigned lcore_id, core_id = 0;
int ret;
unsigned nb_ports, valid_num_ports;
uint16_t portid;
signal(SIGHUP, sighup_handler);
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
argc -= ret;
argv += ret;
/* parse app arguments */
ret = vmdq_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid VMDQ argument\n");
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++)
if (rte_lcore_is_enabled(lcore_id))
lcore_ids[core_id++] = lcore_id;
if (rte_lcore_count() > RTE_MAX_LCORE)
rte_exit(EXIT_FAILURE, "Not enough cores\n");
/*
* Update the global var NUM_PORTS and global array PORTS
* and get value of var VALID_NUM_PORTS according to system ports number
*/
valid_num_ports = check_ports_num(nb_ports);
if (valid_num_ports < 2 || valid_num_ports % 2) {
printf("Current valid ports number is %u\n", valid_num_ports);
rte_exit(EXIT_FAILURE, "Error with valid ports number is not even or less than 2\n");
}
mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
NUM_MBUFS_PER_PORT * nb_ports, MBUF_CACHE_SIZE,
0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (mbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
/* initialize all ports */
/* skip ports that are not enabled */
if ((enabled_port_mask & (1 << portid)) == 0) {
printf("\nSkipping disabled port %d\n", portid);
continue;
}
if (port_init(portid, mbuf_pool) != 0)
rte_exit(EXIT_FAILURE, "Cannot initialize network ports\n");
}
/* call lcore_main() on every lcore */
rte_eal_mp_remote_launch(lcore_main, NULL, CALL_MAIN);
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
/* clean up the EAL */
return 0;
}