DPDK  2.2.0
multi_process/l2fwd_fork/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.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdint.h>
#include <sched.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 <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_spinlock.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_mempool.h>
#include <rte_mbuf.h>
#include <rte_malloc.h>
#include "flib.h"
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
#define MBUF_NAME "mbuf_pool_%d"
#define MBUF_SIZE \
(RTE_MBUF_DEFAULT_DATAROOM + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
#define NB_MBUF 8192
#define RING_MASTER_NAME "l2fwd_ring_m2s_"
#define RING_SLAVE_NAME "l2fwd_ring_s2m_"
#define MAX_NAME_LEN 32
/* RECREATE flag indicate needs initialize resource and launch slave_core again */
#define SLAVE_RECREATE_FLAG 0x1
/* RESTART flag indicate needs restart port and send START command again */
#define SLAVE_RESTART_FLAG 0x2
#define INVALID_MAPPING_ID ((unsigned)LCORE_ID_ANY)
/* Maximum message buffer per slave */
#define NB_CORE_MSGBUF 32
enum l2fwd_cmd{
CMD_START,
CMD_STOP,
};
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
/*
* Configurable number of RX/TX ring descriptors
*/
#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
/* ethernet addresses of ports */
static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
/* mask of enabled ports */
static uint32_t l2fwd_enabled_port_mask = 0;
/* list of enabled ports */
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
static unsigned int l2fwd_rx_queue_per_lcore = 1;
struct mbuf_table {
unsigned len;
struct rte_mbuf *m_table[MAX_PKT_BURST];
};
#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 mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
} __rte_cache_aligned;
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
struct lcore_resource_struct {
int enabled; /* Only set in case this lcore involved into packet forwarding */
int flags; /* Set only slave need to restart or recreate */
unsigned lcore_id; /* lcore ID */
unsigned pair_id; /* dependency lcore ID on port */
char ring_name[2][MAX_NAME_LEN];
/* ring[0] for master send cmd, slave read */
/* ring[1] for slave send ack, master read */
struct rte_ring *ring[2];
int port_num; /* Total port numbers */
uint8_t port[RTE_MAX_ETHPORTS]; /* Port id for that lcore to receive packets */
}__attribute__((packed)) __rte_cache_aligned;
static struct lcore_resource_struct lcore_resource[RTE_MAX_LCORE];
static struct rte_mempool *message_pool;
static rte_spinlock_t res_lock = RTE_SPINLOCK_INITIALIZER;
/* use floating processes */
static int float_proc = 0;
/* Save original cpu affinity */
struct cpu_aff_arg{
cpu_set_t set;
size_t size;
}cpu_aff;
static const struct rte_eth_conf port_conf = {
.rxmode = {
.split_hdr_size = 0,
.header_split = 0,
.hw_ip_checksum = 0,
.hw_vlan_filter = 0,
.jumbo_frame = 0,
.hw_strip_crc = 0,
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
};
static struct rte_mempool * l2fwd_pktmbuf_pool[RTE_MAX_ETHPORTS];
/* Per-port statistics struct */
struct l2fwd_port_statistics {
uint64_t tx;
uint64_t rx;
uint64_t dropped;
} __rte_cache_aligned;
struct l2fwd_port_statistics *port_statistics;
unsigned *mapping_id;
/* A tsc-based timer responsible for triggering statistics printout */
#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
#define MAX_TIMER_PERIOD 86400 /* 1 day max */
static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
static int l2fwd_launch_one_lcore(void *dummy);
/* Print out statistics on packets dropped */
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' };
/* Clear screen and move to top left */
printf("%s%s", clr, topLeft);
printf("\nPort statistics ====================================");
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
/* skip disabled ports */
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 int
clear_cpu_affinity(void)
{
int s;
s = sched_setaffinity(0, cpu_aff.size, &cpu_aff.set);
if (s != 0) {
printf("sched_setaffinity failed:%s\n", strerror(errno));
return -1;
}
return 0;
}
static int
get_cpu_affinity(void)
{
int s;
cpu_aff.size = sizeof(cpu_set_t);
CPU_ZERO(&cpu_aff.set);
s = sched_getaffinity(0, cpu_aff.size, &cpu_aff.set);
if (s != 0) {
printf("sched_getaffinity failed:%s\n", strerror(errno));
return -1;
}
return 0;
}
static struct rte_ring *
create_ring(const char *name, unsigned count,
int socket_id,unsigned flags)
{
struct rte_ring *ring;
if (name == NULL)
return NULL;
/* If already create, just attached it */
if (likely((ring = rte_ring_lookup(name)) != NULL))
return ring;
/* First call it, create one */
return rte_ring_create(name, count, socket_id, flags);
}
/* Malloc with rte_malloc on structures that shared by master and slave */
static int
l2fwd_malloc_shared_struct(void)
{
port_statistics = rte_zmalloc("port_stat",
sizeof(struct l2fwd_port_statistics) * RTE_MAX_ETHPORTS,
0);
if (port_statistics == NULL)
return -1;
/* allocate mapping_id array */
if (float_proc) {
int i;
mapping_id = rte_malloc("mapping_id", sizeof(unsigned) * RTE_MAX_LCORE,
0);
if (mapping_id == NULL)
return -1;
for (i = 0 ;i < RTE_MAX_LCORE; i++)
mapping_id[i] = INVALID_MAPPING_ID;
}
return 0;
}
/* Create ring which used for communicate among master and slave */
static int
create_ms_ring(unsigned slaveid)
{
unsigned flag = RING_F_SP_ENQ | RING_F_SC_DEQ;
struct lcore_resource_struct *res = &lcore_resource[slaveid];
unsigned socketid = rte_socket_id();
/* Always assume create ring on master socket_id */
/* Default only create a ring size 32 */
snprintf(res->ring_name[0], MAX_NAME_LEN, "%s%u",
RING_MASTER_NAME, slaveid);
if ((res->ring[0] = create_ring(res->ring_name[0], NB_CORE_MSGBUF,
socketid, flag)) == NULL) {
printf("Create m2s ring %s failed\n", res->ring_name[0]);
return -1;
}
snprintf(res->ring_name[1], MAX_NAME_LEN, "%s%u",
RING_SLAVE_NAME, slaveid);
if ((res->ring[1] = create_ring(res->ring_name[1], NB_CORE_MSGBUF,
socketid, flag)) == NULL) {
printf("Create s2m ring %s failed\n", res->ring_name[1]);
return -1;
}
return 0;
}
/* send command to pair in paired master and slave ring */
static inline int
sendcmd(unsigned slaveid, enum l2fwd_cmd cmd, int is_master)
{
struct lcore_resource_struct *res = &lcore_resource[slaveid];
void *msg;
int fd = !is_master;
/* Only check master, it must be enabled and running if it is slave */
if (is_master && !res->enabled)
return -1;
if (res->ring[fd] == NULL)
return -1;
if (rte_mempool_get(message_pool, &msg) < 0) {
printf("Error to get message buffer\n");
return -1;
}
*(enum l2fwd_cmd *)msg = cmd;
if (rte_ring_enqueue(res->ring[fd], msg) != 0) {
printf("Enqueue error\n");
rte_mempool_put(message_pool, msg);
return -1;
}
return 0;
}
/* Get command from pair in paired master and slave ring */
static inline int
getcmd(unsigned slaveid, enum l2fwd_cmd *cmd, int is_master)
{
struct lcore_resource_struct *res = &lcore_resource[slaveid];
void *msg;
int fd = !!is_master;
int ret;
/* Only check master, it must be enabled and running if it is slave */
if (is_master && (!res->enabled))
return -1;
if (res->ring[fd] == NULL)
return -1;
ret = rte_ring_dequeue(res->ring[fd], &msg);
if (ret == 0) {
*cmd = *(enum l2fwd_cmd *)msg;
rte_mempool_put(message_pool, msg);
}
return ret;
}
/* Master send command to slave and wait until ack received or error met */
static int
master_sendcmd_with_ack(unsigned slaveid, enum l2fwd_cmd cmd)
{
enum l2fwd_cmd ack_cmd;
int ret = -1;
if (sendcmd(slaveid, cmd, 1) != 0)
rte_exit(EXIT_FAILURE, "Failed to send message\n");
/* Get ack */
while (1) {
ret = getcmd(slaveid, &ack_cmd, 1);
if (ret == 0 && cmd == ack_cmd)
break;
/* If slave not running yet, return an error */
if (flib_query_slave_status(slaveid) != ST_RUN) {
ret = -ENOENT;
break;
}
}
return ret;
}
/* restart all port that assigned to that slave lcore */
static int
reset_slave_all_ports(unsigned slaveid)
{
struct lcore_resource_struct *slave = &lcore_resource[slaveid];
int i, ret = 0;
/* stop/start port */
for (i = 0; i < slave->port_num; i++) {
char buf_name[RTE_MEMPOOL_NAMESIZE];
struct rte_mempool *pool;
printf("Stop port :%d\n", slave->port[i]);
rte_eth_dev_stop(slave->port[i]);
snprintf(buf_name, RTE_MEMPOOL_NAMESIZE, MBUF_NAME, slave->port[i]);
pool = rte_mempool_lookup(buf_name);
if (pool)
printf("Port %d mempool free object is %u(%u)\n", slave->port[i],
rte_mempool_count(pool), (unsigned)NB_MBUF);
else
printf("Can't find mempool %s\n", buf_name);
printf("Start port :%d\n", slave->port[i]);
ret = rte_eth_dev_start(slave->port[i]);
if (ret != 0)
break;
}
return ret;
}
static int
reset_shared_structures(unsigned slaveid)
{
int ret;
/* Only port are shared resource here */
ret = reset_slave_all_ports(slaveid);
return ret;
}
static int
init_slave_res(unsigned slaveid)
{
struct lcore_resource_struct *slave = &lcore_resource[slaveid];
enum l2fwd_cmd cmd;
if (!slave->enabled) {
printf("Something wrong with lcore=%u enabled=%d\n",slaveid,
slave->enabled);
return -1;
}
/* Initialize ring */
if (create_ms_ring(slaveid) != 0)
rte_exit(EXIT_FAILURE, "failed to create ring for slave %u\n",
slaveid);
/* drain un-read buffer if have */
while (getcmd(slaveid, &cmd, 1) == 0);
while (getcmd(slaveid, &cmd, 0) == 0);
return 0;
}
static int
recreate_one_slave(unsigned slaveid)
{
int ret = 0;
/* Re-initialize resource for stalled slave */
if ((ret = init_slave_res(slaveid)) != 0) {
printf("Init slave=%u failed\n", slaveid);
return ret;
}
if ((ret = flib_remote_launch(l2fwd_launch_one_lcore, NULL, slaveid))
!= 0)
printf("Launch slave %u failed\n", slaveid);
return ret;
}
static void
remapping_slave_resource(unsigned slaveid, unsigned map_id)
{
/* remapping lcore_resource */
memcpy(&lcore_resource[map_id], &lcore_resource[slaveid],
sizeof(struct lcore_resource_struct));
/* remapping lcore_queue_conf */
memcpy(&lcore_queue_conf[map_id], &lcore_queue_conf[slaveid],
sizeof(struct lcore_queue_conf));
}
static int
reset_pair(unsigned slaveid, unsigned pairid)
{
int ret;
if ((ret = reset_shared_structures(slaveid)) != 0)
goto back;
if((ret = reset_shared_structures(pairid)) != 0)
goto back;
if (float_proc) {
unsigned map_id = mapping_id[slaveid];
if (map_id != INVALID_MAPPING_ID) {
printf("%u return mapping id %u\n", slaveid, map_id);
flib_free_lcore_id(map_id);
mapping_id[slaveid] = INVALID_MAPPING_ID;
}
map_id = mapping_id[pairid];
if (map_id != INVALID_MAPPING_ID) {
printf("%u return mapping id %u\n", pairid, map_id);
flib_free_lcore_id(map_id);
mapping_id[pairid] = INVALID_MAPPING_ID;
}
}
if((ret = recreate_one_slave(slaveid)) != 0)
goto back;
ret = recreate_one_slave(pairid);
back:
return ret;
}
static void
slave_exit_cb(unsigned slaveid, __attribute__((unused))int stat)
{
struct lcore_resource_struct *slave = &lcore_resource[slaveid];
printf("Get slave %u leave info\n", slaveid);
if (!slave->enabled) {
printf("Lcore=%u not registered for it's exit\n", slaveid);
return;
}
rte_spinlock_lock(&res_lock);
/* Change the state and wait master to start them */
slave->flags = SLAVE_RECREATE_FLAG;
rte_spinlock_unlock(&res_lock);
}
/* Send the packet on an output interface */
static int
l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
{
struct rte_mbuf **m_table;
unsigned ret;
unsigned queueid =0;
m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
port_statistics[port].tx += ret;
if (unlikely(ret < n)) {
port_statistics[port].dropped += (n - ret);
do {
rte_pktmbuf_free(m_table[ret]);
} while (++ret < n);
}
return 0;
}
/* Send the packet on an output interface */
static int
l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
{
unsigned lcore_id, len;
struct lcore_queue_conf *qconf;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
len = qconf->tx_mbufs[port].len;
qconf->tx_mbufs[port].m_table[len] = m;
len++;
/* enough pkts to be sent */
if (unlikely(len == MAX_PKT_BURST)) {
l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
len = 0;
}
qconf->tx_mbufs[port].len = len;
return 0;
}
static void
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
{
struct ether_hdr *eth;
void *tmp;
unsigned dst_port;
dst_port = l2fwd_dst_ports[portid];
eth = rte_pktmbuf_mtod(m, struct 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 */
ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
l2fwd_send_packet(m, (uint8_t) dst_port);
}
/* main processing loop */
static void
l2fwd_main_loop(void)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mbuf *m;
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_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;
lcore_id = rte_lcore_id();
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 (1) {
enum l2fwd_cmd cmd;
cur_tsc = rte_rdtsc();
if (unlikely(getcmd(lcore_id, &cmd, 0) == 0)) {
sendcmd(lcore_id, cmd, 0);
/* If get stop command, stop forwarding and exit */
if (cmd == CMD_STOP) {
return;
}
}
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
if (qconf->tx_mbufs[portid].len == 0)
continue;
l2fwd_send_burst(&lcore_queue_conf[lcore_id],
qconf->tx_mbufs[portid].len,
(uint8_t) portid);
qconf->tx_mbufs[portid].len = 0;
}
}
/*
* Read packet from RX queues
*/
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
pkts_burst, MAX_PKT_BURST);
port_statistics[portid].rx += nb_rx;
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
rte_prefetch0(rte_pktmbuf_mtod(m, void *));
l2fwd_simple_forward(m, portid);
}
}
}
}
static int
l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
{
unsigned lcore_id = rte_lcore_id();
if (float_proc) {
unsigned flcore_id;
/* Change it to floating process, also change it's lcore_id */
clear_cpu_affinity();
RTE_PER_LCORE(_lcore_id) = 0;
/* Get a lcore_id */
if (flib_assign_lcore_id() < 0 ) {
printf("flib_assign_lcore_id failed\n");
return -1;
}
flcore_id = rte_lcore_id();
/* Set mapping id, so master can return it after slave exited */
mapping_id[lcore_id] = flcore_id;
printf("Org lcore_id = %u, cur lcore_id = %u\n",
lcore_id, flcore_id);
remapping_slave_resource(lcore_id, flcore_id);
}
l2fwd_main_loop();
/* return lcore_id before return */
if (float_proc) {
flib_free_lcore_id(rte_lcore_id());
mapping_id[lcore_id] = INVALID_MAPPING_ID;
}
return 0;
}
/* display usage */
static void
l2fwd_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK -s COREMASK [-q NQ] -f\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
" -f use floating process which won't bind to any core to run\n"
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
prgname);
}
static int
l2fwd_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;
}
static unsigned int
l2fwd_parse_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
/* parse hexadecimal string */
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;
/* parse number string */
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;
}
/* Parse the argument given in the command line of the application */
static int
l2fwd_parse_args(int argc, char **argv)
{
int opt, ret;
char **argvopt;
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
{NULL, 0, 0, 0}
};
int has_pmask = 0;
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:q:T:f",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* portmask */
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;
}
has_pmask = 1;
break;
/* nqueue */
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;
/* timer period */
case 'T':
timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
if (timer_period < 0) {
printf("invalid timer period\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* use floating process */
case 'f':
float_proc = 1;
break;
/* long options */
case 0:
l2fwd_usage(prgname);
return -1;
default:
l2fwd_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
if (!has_pmask) {
l2fwd_usage(prgname);
return -1;
}
ret = optind-1;
optind = 0; /* reset getopt lib */
return ret;
}
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
uint8_t portid, count, all_ports_up, print_flag = 0;
struct rte_eth_link link;
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
all_ports_up = 1;
for (portid = 0; portid < port_num; portid++) {
if ((port_mask & (1 << portid)) == 0)
continue;
memset(&link, 0, sizeof(link));
rte_eth_link_get_nowait(portid, &link);
/* print link status if flag set */
if (print_flag == 1) {
if (link.link_status)
printf("Port %d Link Up - speed %u "
"Mbps - %s\n", (uint8_t)portid,
(unsigned)link.link_speed,
(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
("full-duplex") : ("half-duplex\n"));
else
printf("Port %d Link Down\n",
(uint8_t)portid);
continue;
}
/* clear all_ports_up flag if any link down */
if (link.link_status == 0) {
all_ports_up = 0;
break;
}
}
/* after finally printing all link status, get out */
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
rte_delay_ms(CHECK_INTERVAL);
}
/* set the print_flag if all ports up or timeout */
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
int
main(int argc, char **argv)
{
struct lcore_queue_conf *qconf;
struct rte_eth_dev_info dev_info;
int ret;
uint8_t nb_ports;
uint8_t nb_ports_available;
uint8_t portid, last_port;
unsigned rx_lcore_id;
unsigned nb_ports_in_mask = 0;
unsigned i;
int flags = 0;
uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
/* Save cpu_affinity first, restore it in case it's floating process option */
if (get_cpu_affinity() != 0)
rte_exit(EXIT_FAILURE, "get_cpu_affinity error\n");
/* Also tries to set cpu affinity to detect whether it will fail in child process */
if(clear_cpu_affinity() != 0)
rte_exit(EXIT_FAILURE, "clear_cpu_affinity error\n");
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
argc -= ret;
argv += ret;
/* parse application arguments (after the EAL ones) */
ret = l2fwd_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
/*flib init */
if (flib_init() != 0)
rte_exit(EXIT_FAILURE, "flib init error");
if (l2fwd_malloc_shared_struct() != 0)
rte_exit(EXIT_FAILURE, "malloc mem failed\n");
/* Initialize lcore_resource structures */
memset(lcore_resource, 0, sizeof(lcore_resource));
for (i = 0; i < RTE_MAX_LCORE; i++)
lcore_resource[i].lcore_id = i;
nb_ports = rte_eth_dev_count();
if (nb_ports == 0)
rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
if (nb_ports > RTE_MAX_ETHPORTS)
nb_ports = RTE_MAX_ETHPORTS;
/* create the mbuf pool */
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
char buf_name[RTE_MEMPOOL_NAMESIZE];
flags = MEMPOOL_F_SP_PUT | MEMPOOL_F_SC_GET;
snprintf(buf_name, RTE_MEMPOOL_NAMESIZE, MBUF_NAME, portid);
l2fwd_pktmbuf_pool[portid] =
rte_mempool_create(buf_name, NB_MBUF,
MBUF_SIZE, 32,
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init, NULL,
rte_pktmbuf_init, NULL,
rte_socket_id(), flags);
if (l2fwd_pktmbuf_pool[portid] == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
printf("Create mbuf %s\n", buf_name);
}
/* reset l2fwd_dst_ports */
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
l2fwd_dst_ports[portid] = 0;
last_port = 0;
/*
* Each logical core is assigned a dedicated TX queue on each port.
*/
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
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++;
rte_eth_dev_info_get(portid, &dev_info);
}
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;
/* Initialize the port/queue configuration of each logical core */
for (portid = 0; portid < nb_ports; portid++) {
struct lcore_resource_struct *res;
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
/* get the lcore_id for this port */
/* skip master lcore */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
rte_get_master_lcore() == rx_lcore_id ||
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])
/* Assigned a new logical core in the loop above. */
qconf = &lcore_queue_conf[rx_lcore_id];
qconf->rx_port_list[qconf->n_rx_port] = portid;
qconf->n_rx_port++;
/* Save the port resource info into lcore_resource strucutres */
res = &lcore_resource[rx_lcore_id];
res->enabled = 1;
res->port[res->port_num++] = portid;
printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
}
nb_ports_available = nb_ports;
/* Initialise each port */
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %u\n", (unsigned) portid);
nb_ports_available--;
continue;
}
/* init port */
printf("Initializing port %u... ", (unsigned) portid);
fflush(stdout);
ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
ret, (unsigned) portid);
rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
/* init one RX queue */
fflush(stdout);
ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
rte_eth_dev_socket_id(portid),
NULL,
l2fwd_pktmbuf_pool[portid]);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
ret, (unsigned) portid);
/* init one TX queue on each port */
fflush(stdout);
ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
rte_eth_dev_socket_id(portid),
NULL);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
ret, (unsigned) portid);
/* Start device */
ret = rte_eth_dev_start(portid);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
ret, (unsigned) portid);
printf("done: \n");
rte_eth_promiscuous_enable(portid);
printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
(unsigned) 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]);
/* initialize port stats */
//memset(&port_statistics, 0, sizeof(port_statistics));
}
if (!nb_ports_available) {
rte_exit(EXIT_FAILURE,
"All available ports are disabled. Please set portmask.\n");
}
check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
/* Record pair lcore */
for (portid = 0; portid < nb_ports; portid++) {
uint32_t pair_port;
unsigned lcore = 0, pair_lcore = 0;
unsigned j, find_lcore, find_pair_lcore;
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
/* Find pair ports' lcores */
find_lcore = find_pair_lcore = 0;
pair_port = l2fwd_dst_ports[portid];
for (i = 0; i < RTE_MAX_LCORE; i++) {
if (!rte_lcore_is_enabled(i))
continue;
for (j = 0; j < lcore_queue_conf[i].n_rx_port;j++) {
if (lcore_queue_conf[i].rx_port_list[j] == portid) {
lcore = i;
find_lcore = 1;
break;
}
if (lcore_queue_conf[i].rx_port_list[j] == pair_port) {
pair_lcore = i;
find_pair_lcore = 1;
break;
}
}
if (find_lcore && find_pair_lcore)
break;
}
if (!find_lcore || !find_pair_lcore)
rte_exit(EXIT_FAILURE, "Not find port=%d pair\n", portid);
printf("lcore %u and %u paired\n", lcore, pair_lcore);
lcore_resource[lcore].pair_id = pair_lcore;
lcore_resource[pair_lcore].pair_id = lcore;
}
/* Create message buffer for all master and slave */
message_pool = rte_mempool_create("ms_msg_pool",
NB_CORE_MSGBUF * RTE_MAX_LCORE,
sizeof(enum l2fwd_cmd), NB_CORE_MSGBUF / 2,
0,
rte_pktmbuf_pool_init, NULL,
rte_pktmbuf_init, NULL,
rte_socket_id(), 0);
if (message_pool == NULL)
rte_exit(EXIT_FAILURE, "Create msg mempool failed\n");
/* Create ring for each master and slave pair, also register cb when slave leaves */
for (i = 0; i < RTE_MAX_LCORE; i++) {
if (lcore_resource[i].enabled) {
/* Create ring for master and slave communication */
ret = create_ms_ring(i);
if (ret != 0)
rte_exit(EXIT_FAILURE, "Create ring for lcore=%u failed",
i);
if (flib_register_slave_exit_notify(i,
slave_exit_cb) != 0)
rte_exit(EXIT_FAILURE,
"Register master_trace_slave_exit failed");
}
}
/* launch per-lcore init on every lcore except master */
flib_mp_remote_launch(l2fwd_launch_one_lcore, NULL, SKIP_MASTER);
/* print statistics 10 second */
prev_tsc = cur_tsc = rte_rdtsc();
timer_tsc = 0;
while (1) {
sleep(1);
cur_tsc = rte_rdtsc();
diff_tsc = cur_tsc - prev_tsc;
/* if timer is enabled */
if (timer_period > 0) {
/* advance the timer */
timer_tsc += diff_tsc;
/* if timer has reached its timeout */
if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
print_stats();
/* reset the timer */
timer_tsc = 0;
}
}
prev_tsc = cur_tsc;
/* Check any slave need restart or recreate */
rte_spinlock_lock(&res_lock);
for (i = 0; i < RTE_MAX_LCORE; i++) {
struct lcore_resource_struct *res = &lcore_resource[i];
struct lcore_resource_struct *pair = &lcore_resource[res->pair_id];
/* If find slave exited, try to reset pair */
if (res->enabled && res->flags && pair->enabled) {
if (!pair->flags) {
master_sendcmd_with_ack(pair->lcore_id, CMD_STOP);
rte_spinlock_unlock(&res_lock);
sleep(1);
rte_spinlock_lock(&res_lock);
if (pair->flags)
continue;
}
if (reset_pair(res->lcore_id, pair->lcore_id) != 0)
rte_exit(EXIT_FAILURE, "failed to reset slave");
res->flags = 0;
pair->flags = 0;
}
}
rte_spinlock_unlock(&res_lock);
}
}
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