DPDK  2.2.0
vmdq_dcb/main.c
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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_memzone.h>
#include <rte_eal.h>
#include <rte_per_lcore.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_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_ring.h>
#include <rte_log.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_memcpy.h>
/* basic constants used in application */
#define NUM_QUEUES 128
#define NUM_MBUFS 64*1024
#define MBUF_CACHE_SIZE 64
#define INVALID_PORT_ID 0xFF
/* mask of enabled ports */
static uint32_t enabled_port_mask = 0;
/* number of pools (if user does not specify any, 16 by default */
static enum rte_eth_nb_pools num_pools = ETH_16_POOLS;
/* empty vmdq+dcb configuration structure. Filled in programatically */
static const struct rte_eth_conf vmdq_dcb_conf_default = {
.rxmode = {
.mq_mode = ETH_MQ_RX_VMDQ_DCB,
.split_hdr_size = 0,
.header_split = 0,
.hw_ip_checksum = 0,
.hw_vlan_filter = 0,
.jumbo_frame = 0,
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
.rx_adv_conf = {
/*
* should be overridden separately in code with
* appropriate values
*/
.vmdq_dcb_conf = {
.nb_queue_pools = ETH_16_POOLS,
.enable_default_pool = 0,
.default_pool = 0,
.nb_pool_maps = 0,
.pool_map = {{0, 0},},
.dcb_tc = {0},
},
},
};
static uint8_t ports[RTE_MAX_ETHPORTS];
static unsigned num_ports = 0;
/* array used for printing out statistics */
volatile unsigned long rxPackets[ NUM_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
};
/* Builds up the correct configuration for vmdq+dcb based on the vlan tags array
* given above, and the number of traffic classes available for use. */
static inline int
get_eth_conf(struct rte_eth_conf *eth_conf, enum rte_eth_nb_pools num_pools)
{
struct rte_eth_vmdq_dcb_conf conf;
unsigned i;
if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS ) return -1;
conf.nb_queue_pools = num_pools;
conf.enable_default_pool = 0;
conf.default_pool = 0; /* set explicit value, even if not used */
conf.nb_pool_maps = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
for (i = 0; i < conf.nb_pool_maps; i++){
conf.pool_map[i].vlan_id = vlan_tags[ i ];
conf.pool_map[i].pools = 1 << (i % num_pools);
}
for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++){
conf.dcb_tc[i] = (uint8_t)(i % (NUM_QUEUES/num_pools));
}
(void)(rte_memcpy(eth_conf, &vmdq_dcb_conf_default, sizeof(*eth_conf)));
(void)(rte_memcpy(&eth_conf->rx_adv_conf.vmdq_dcb_conf, &conf,
sizeof(eth_conf->rx_adv_conf.vmdq_dcb_conf)));
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(uint8_t port, struct rte_mempool *mbuf_pool)
{
struct rte_eth_conf port_conf;
const uint16_t rxRings = ETH_VMDQ_DCB_NUM_QUEUES,
txRings = (uint16_t)rte_lcore_count();
const uint16_t rxRingSize = 128, txRingSize = 512;
int retval;
uint16_t q;
retval = get_eth_conf(&port_conf, num_pools);
if (retval < 0)
return retval;
if (port >= rte_eth_dev_count()) return -1;
retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
if (retval != 0)
return retval;
for (q = 0; q < rxRings; q ++) {
retval = rte_eth_rx_queue_setup(port, q, rxRingSize,
rte_eth_dev_socket_id(port),
NULL,
mbuf_pool);
if (retval < 0)
return retval;
}
for (q = 0; q < txRings; q ++) {
retval = rte_eth_tx_queue_setup(port, q, txRingSize,
rte_eth_dev_socket_id(port),
NULL);
if (retval < 0)
return retval;
}
retval = rte_eth_dev_start(port);
if (retval < 0)
return retval;
struct ether_addr addr;
rte_eth_macaddr_get(port, &addr);
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;
}
/* 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 (n != 16 && n != 32)
return -1;
if (n == 16)
num_pools = ETH_16_POOLS;
else
num_pools = ETH_32_POOLS;
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 -1;
if (pm == 0)
return -1;
return pm;
}
/* Display usage */
static void
vmdq_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK]\n"
" --nb-pools NP: number of pools (16 default, 32)\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},
{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 (vmdq_parse_num_pools(optarg) == -1){
printf("invalid number of pools\n");
vmdq_usage(prgname);
return -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;
}
/* When we receive a HUP signal, print out our stats */
static void
sighup_handler(int signum)
{
unsigned q;
for (q = 0; q < NUM_QUEUES; q ++) {
if (q % (NUM_QUEUES/num_pools) == 0)
printf("\nPool %u: ", q/(NUM_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 __attribute__((noreturn)) int
lcore_main(void *arg)
{
const uintptr_t core_num = (uintptr_t)arg;
const unsigned num_cores = rte_lcore_count();
uint16_t startQueue = (uint16_t)(core_num * (NUM_QUEUES/num_cores));
uint16_t endQueue = (uint16_t)(startQueue + (NUM_QUEUES/num_cores));
uint16_t q, i, p;
printf("Core %u(lcore %u) reading queues %i-%i\n", (unsigned)core_num,
rte_lcore_id(), startQueue, endQueue - 1);
for (;;) {
struct rte_mbuf *buf[32];
const uint16_t buf_size = sizeof(buf) / sizeof(buf[0]);
for (p = 0; p < num_ports; p++) {
const uint8_t src = ports[p];
const uint8_t dst = ports[p ^ 1]; /* 0 <-> 1, 2 <-> 3 etc */
if ((src == INVALID_PORT_ID) || (dst == INVALID_PORT_ID))
continue;
for (q = startQueue; q < endQueue; q++) {
const uint16_t rxCount = rte_eth_rx_burst(src,
q, buf, buf_size);
if (rxCount == 0)
continue;
rxPackets[q] += rxCount;
const uint16_t txCount = rte_eth_tx_burst(dst,
(uint16_t)core_num, buf, rxCount);
if (txCount != rxCount) {
for (i = txCount; i < rxCount; i++)
rte_pktmbuf_free(buf[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 (ports[portid] >= nb_ports) {
printf("\nSpecified port ID(%u) exceeds max system port ID(%u)\n",
ports[portid], (nb_ports - 1));
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[])
{
unsigned cores;
struct rte_mempool *mbuf_pool;
unsigned lcore_id;
uintptr_t i;
int ret;
unsigned nb_ports, valid_num_ports;
uint8_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");
cores = rte_lcore_count();
if ((cores & (cores - 1)) != 0 || cores > 128) {
rte_exit(EXIT_FAILURE,"This program can only run on an even"
"number of cores(1-128)\n\n");
}
nb_ports = rte_eth_dev_count();
if (nb_ports > RTE_MAX_ETHPORTS)
nb_ports = RTE_MAX_ETHPORTS;
/*
* 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 * 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 */
for (portid = 0; portid < nb_ports; portid++) {
/* 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 slave lcore */
i = 0;
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
rte_eal_remote_launch(lcore_main, (void*)i++, lcore_id);
}
/* call on master too */
(void) lcore_main((void*)i);
return 0;
}
Generated by   doxygen 1.8.1.2