[dpdk.git] / app / test-pmd / testpmd.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 <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <sys/types.h>
#include <errno.h>

#include <sys/queue.h>
#include <sys/stat.h>

#include <stdint.h>
#include <unistd.h>
#include <inttypes.h>

#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_cycles.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_launch.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_ring.h>
#include <rte_mempool.h>
#include <rte_malloc.h>
#include <rte_mbuf.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_string_fns.h>
#ifdef RTE_LIBRTE_PMD_XENVIRT
#include <rte_eth_xenvirt.h>
#endif

#include "testpmd.h"
#include "mempool_osdep.h"

uint16_t verbose_level = 0; /**< Silent by default. */

/* use master core for command line ? */
uint8_t interactive = 0;
uint8_t auto_start = 0;

/*
 * NUMA support configuration.
 * When set, the NUMA support attempts to dispatch the allocation of the
 * RX and TX memory rings, and of the DMA memory buffers (mbufs) for the
 * probed ports among the CPU sockets 0 and 1.
 * Otherwise, all memory is allocated from CPU socket 0.
 */
uint8_t numa_support = 0; /**< No numa support by default */

/*
 * In UMA mode,all memory is allocated from socket 0 if --socket-num is 
 * not configured.
 */
uint8_t socket_num = UMA_NO_CONFIG; 

/*
 * Use ANONYMOUS mapped memory (might be not physically continuous) for mbufs.
 */
uint8_t mp_anon = 0;

/*
 * Record the Ethernet address of peer target ports to which packets are
 * forwarded.
 * Must be instanciated with the ethernet addresses of peer traffic generator
 * ports.
 */
struct ether_addr peer_eth_addrs[RTE_MAX_ETHPORTS];
portid_t nb_peer_eth_addrs = 0;

/*
 * Probed Target Environment.
 */
struct rte_port *ports;        /**< For all probed ethernet ports. */
portid_t nb_ports;             /**< Number of probed ethernet ports. */
struct fwd_lcore **fwd_lcores; /**< For all probed logical cores. */
lcoreid_t nb_lcores;           /**< Number of probed logical cores. */

/*
 * Test Forwarding Configuration.
 *    nb_fwd_lcores <= nb_cfg_lcores <= nb_lcores
 *    nb_fwd_ports  <= nb_cfg_ports  <= nb_ports
 */
lcoreid_t nb_cfg_lcores; /**< Number of configured logical cores. */
lcoreid_t nb_fwd_lcores; /**< Number of forwarding logical cores. */
portid_t  nb_cfg_ports;  /**< Number of configured ports. */
portid_t  nb_fwd_ports;  /**< Number of forwarding ports. */

unsigned int fwd_lcores_cpuids[RTE_MAX_LCORE]; /**< CPU ids configuration. */
portid_t fwd_ports_ids[RTE_MAX_ETHPORTS];      /**< Port ids configuration. */

struct fwd_stream **fwd_streams; /**< For each RX queue of each port. */
streamid_t nb_fwd_streams;       /**< Is equal to (nb_ports * nb_rxq). */

/*
 * Forwarding engines.
 */
struct fwd_engine * fwd_engines[] = {
        &io_fwd_engine,
        &mac_fwd_engine,
        &mac_retry_fwd_engine,
        &mac_swap_engine,
        &flow_gen_engine,
        &rx_only_engine,
        &tx_only_engine,
        &csum_fwd_engine,
        &icmp_echo_engine,
#ifdef RTE_LIBRTE_IEEE1588
        &ieee1588_fwd_engine,
#endif
        NULL,
};

struct fwd_config cur_fwd_config;
struct fwd_engine *cur_fwd_eng = &io_fwd_engine; /**< IO mode by default. */

uint16_t mbuf_data_size = DEFAULT_MBUF_DATA_SIZE; /**< Mbuf data space size. */
uint32_t param_total_num_mbufs = 0;  /**< number of mbufs in all pools - if
                                      * specified on command-line. */

/*
 * Configuration of packet segments used by the "txonly" processing engine.
 */
uint16_t tx_pkt_length = TXONLY_DEF_PACKET_LEN; /**< TXONLY packet length. */
uint16_t tx_pkt_seg_lengths[RTE_MAX_SEGS_PER_PKT] = {
        TXONLY_DEF_PACKET_LEN,
};
uint8_t  tx_pkt_nb_segs = 1; /**< Number of segments in TXONLY packets */

uint16_t nb_pkt_per_burst = DEF_PKT_BURST; /**< Number of packets per burst. */
uint16_t mb_mempool_cache = DEF_PKT_BURST; /**< Size of mbuf mempool cache. */

/* current configuration is in DCB or not,0 means it is not in DCB mode */
uint8_t dcb_config = 0;
 
/* Whether the dcb is in testing status */
uint8_t dcb_test = 0;
 
/* DCB on and VT on mapping is default */
enum dcb_queue_mapping_mode dcb_q_mapping = DCB_VT_Q_MAPPING;

/*
 * Configurable number of RX/TX queues.
 */
queueid_t nb_rxq = 1; /**< Number of RX queues per port. */
queueid_t nb_txq = 1; /**< Number of TX queues per port. */

/*
 * Configurable number of RX/TX ring descriptors.
 */
#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT; /**< Number of RX descriptors. */
uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; /**< Number of TX descriptors. */

/*
 * Configurable values of RX and TX ring threshold registers.
 */
#define RX_PTHRESH 8 /**< Default value of RX prefetch threshold register. */
#define RX_HTHRESH 8 /**< Default value of RX host threshold register. */
#define RX_WTHRESH 4 /**< Default value of RX write-back threshold register. */

#define TX_PTHRESH 36 /**< Default value of TX prefetch threshold register. */
#define TX_HTHRESH 0 /**< Default value of TX host threshold register. */
#define TX_WTHRESH 0 /**< Default value of TX write-back threshold register. */

struct rte_eth_thresh rx_thresh = {
        .pthresh = RX_PTHRESH,
        .hthresh = RX_HTHRESH,
        .wthresh = RX_WTHRESH,
};

struct rte_eth_thresh tx_thresh = {
        .pthresh = TX_PTHRESH,
        .hthresh = TX_HTHRESH,
        .wthresh = TX_WTHRESH,
};

/*
 * Configurable value of RX free threshold.
 */
uint16_t rx_free_thresh = 0; /* Immediately free RX descriptors by default. */

/*
 * Configurable value of RX drop enable.
 */
uint8_t rx_drop_en = 0; /* Drop packets when no descriptors for queue. */

/*
 * Configurable value of TX free threshold.
 */
uint16_t tx_free_thresh = 0; /* Use default values. */

/*
 * Configurable value of TX RS bit threshold.
 */
uint16_t tx_rs_thresh = 0; /* Use default values. */

/*
 * Configurable value of TX queue flags.
 */
uint32_t txq_flags = 0; /* No flags set. */

/*
 * Receive Side Scaling (RSS) configuration.
 */
uint16_t rss_hf = ETH_RSS_IPV4 | ETH_RSS_IPV6; /* RSS IP by default. */

/*
 * Port topology configuration
 */
uint16_t port_topology = PORT_TOPOLOGY_PAIRED; /* Ports are paired by default */

/*
 * Avoids to flush all the RX streams before starts forwarding.
 */
uint8_t no_flush_rx = 0; /* flush by default */

/*
 * Avoids to check link status when starting/stopping a port.
 */
uint8_t no_link_check = 0; /* check by default */

/*
 * NIC bypass mode configuration options.
 */
#ifdef RTE_NIC_BYPASS

/* The NIC bypass watchdog timeout. */
uint32_t bypass_timeout = RTE_BYPASS_TMT_OFF; 

#endif

/*
 * Ethernet device configuration.
 */
struct rte_eth_rxmode rx_mode = {
        .max_rx_pkt_len = ETHER_MAX_LEN, /**< Default maximum frame length. */
        .split_hdr_size = 0,
        .header_split   = 0, /**< Header Split disabled. */
        .hw_ip_checksum = 0, /**< IP checksum offload disabled. */
        .hw_vlan_filter = 1, /**< VLAN filtering enabled. */
        .hw_vlan_strip  = 1, /**< VLAN strip enabled. */
        .hw_vlan_extend = 0, /**< Extended VLAN disabled. */
        .jumbo_frame    = 0, /**< Jumbo Frame Support disabled. */
        .hw_strip_crc   = 0, /**< CRC stripping by hardware disabled. */
};

struct rte_fdir_conf fdir_conf = {
        .mode = RTE_FDIR_MODE_NONE,
        .pballoc = RTE_FDIR_PBALLOC_64K,
        .status = RTE_FDIR_REPORT_STATUS,
        .flexbytes_offset = 0x6,
        .drop_queue = 127,
};

static volatile int test_done = 1; /* stop packet forwarding when set to 1. */

struct queue_stats_mappings tx_queue_stats_mappings_array[MAX_TX_QUEUE_STATS_MAPPINGS];
struct queue_stats_mappings rx_queue_stats_mappings_array[MAX_RX_QUEUE_STATS_MAPPINGS];

struct queue_stats_mappings *tx_queue_stats_mappings = tx_queue_stats_mappings_array;
struct queue_stats_mappings *rx_queue_stats_mappings = rx_queue_stats_mappings_array;

uint16_t nb_tx_queue_stats_mappings = 0;
uint16_t nb_rx_queue_stats_mappings = 0;

/* Forward function declarations */
static void map_port_queue_stats_mapping_registers(uint8_t pi, struct rte_port *port);
static void check_all_ports_link_status(uint8_t port_num, uint32_t port_mask);

/*
 * Check if all the ports are started.
 * If yes, return positive value. If not, return zero.
 */
static int all_ports_started(void);

/*
 * Setup default configuration.
 */
static void
set_default_fwd_lcores_config(void)
{
        unsigned int i;
        unsigned int nb_lc;

        nb_lc = 0;
        for (i = 0; i < RTE_MAX_LCORE; i++) {
                if (! rte_lcore_is_enabled(i))
                        continue;
                if (i == rte_get_master_lcore())
                        continue;
                fwd_lcores_cpuids[nb_lc++] = i;
        }
        nb_lcores = (lcoreid_t) nb_lc;
        nb_cfg_lcores = nb_lcores;
        nb_fwd_lcores = 1;
}

static void
set_def_peer_eth_addrs(void)
{
        portid_t i;

        for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
                peer_eth_addrs[i].addr_bytes[0] = ETHER_LOCAL_ADMIN_ADDR;
                peer_eth_addrs[i].addr_bytes[5] = i;
        }
}

static void
set_default_fwd_ports_config(void)
{
        portid_t pt_id;

        for (pt_id = 0; pt_id < nb_ports; pt_id++)
                fwd_ports_ids[pt_id] = pt_id;

        nb_cfg_ports = nb_ports;
        nb_fwd_ports = nb_ports;
}

void
set_def_fwd_config(void)
{
        set_default_fwd_lcores_config();
        set_def_peer_eth_addrs();
        set_default_fwd_ports_config();
}

/*
 * Configuration initialisation done once at init time.
 */
struct mbuf_ctor_arg {
        uint16_t seg_buf_offset; /**< offset of data in data segment of mbuf. */
        uint16_t seg_buf_size;   /**< size of data segment in mbuf. */
};

struct mbuf_pool_ctor_arg {
        uint16_t seg_buf_size; /**< size of data segment in mbuf. */
};

static void
testpmd_mbuf_ctor(struct rte_mempool *mp,
                  void *opaque_arg,
                  void *raw_mbuf,
                  __attribute__((unused)) unsigned i)
{
        struct mbuf_ctor_arg *mb_ctor_arg;
        struct rte_mbuf    *mb;

        mb_ctor_arg = (struct mbuf_ctor_arg *) opaque_arg;
        mb = (struct rte_mbuf *) raw_mbuf;

        mb->type         = RTE_MBUF_PKT;
        mb->pool         = mp;
        mb->buf_addr     = (void *) ((char *)mb + mb_ctor_arg->seg_buf_offset);
        mb->buf_physaddr = (uint64_t) (rte_mempool_virt2phy(mp, mb) +
                        mb_ctor_arg->seg_buf_offset);
        mb->buf_len      = mb_ctor_arg->seg_buf_size;
        mb->type         = RTE_MBUF_PKT;
        mb->ol_flags     = 0;
        mb->pkt.data     = (char *) mb->buf_addr + RTE_PKTMBUF_HEADROOM;
        mb->pkt.nb_segs  = 1;
        mb->pkt.vlan_macip.data = 0;
        mb->pkt.hash.rss = 0;
}

static void
testpmd_mbuf_pool_ctor(struct rte_mempool *mp,
                       void *opaque_arg)
{
        struct mbuf_pool_ctor_arg      *mbp_ctor_arg;
        struct rte_pktmbuf_pool_private *mbp_priv;

        if (mp->private_data_size < sizeof(struct rte_pktmbuf_pool_private)) {
                printf("%s(%s) private_data_size %d < %d\n",
                       __func__, mp->name, (int) mp->private_data_size,
                       (int) sizeof(struct rte_pktmbuf_pool_private));
                return;
        }
        mbp_ctor_arg = (struct mbuf_pool_ctor_arg *) opaque_arg;
        mbp_priv = rte_mempool_get_priv(mp);
        mbp_priv->mbuf_data_room_size = mbp_ctor_arg->seg_buf_size;
}

static void
mbuf_pool_create(uint16_t mbuf_seg_size, unsigned nb_mbuf,
                 unsigned int socket_id)
{
        char pool_name[RTE_MEMPOOL_NAMESIZE];
        struct rte_mempool *rte_mp;
        struct mbuf_pool_ctor_arg mbp_ctor_arg;
        struct mbuf_ctor_arg mb_ctor_arg;
        uint32_t mb_size;

        mbp_ctor_arg.seg_buf_size = (uint16_t) (RTE_PKTMBUF_HEADROOM +
                                                mbuf_seg_size);
        mb_ctor_arg.seg_buf_offset =
                (uint16_t) CACHE_LINE_ROUNDUP(sizeof(struct rte_mbuf));
        mb_ctor_arg.seg_buf_size = mbp_ctor_arg.seg_buf_size;
        mb_size = mb_ctor_arg.seg_buf_offset + mb_ctor_arg.seg_buf_size;
        mbuf_poolname_build(socket_id, pool_name, sizeof(pool_name));

#ifdef RTE_LIBRTE_PMD_XENVIRT
        rte_mp = rte_mempool_gntalloc_create(pool_name, nb_mbuf, mb_size,
                                   (unsigned) mb_mempool_cache,
                                   sizeof(struct rte_pktmbuf_pool_private),
                                   testpmd_mbuf_pool_ctor, &mbp_ctor_arg,
                                   testpmd_mbuf_ctor, &mb_ctor_arg,
                                   socket_id, 0);



#else
        if (mp_anon != 0)
                rte_mp = mempool_anon_create(pool_name, nb_mbuf, mb_size,
                                    (unsigned) mb_mempool_cache,
                                    sizeof(struct rte_pktmbuf_pool_private),
                                    testpmd_mbuf_pool_ctor, &mbp_ctor_arg,
                                    testpmd_mbuf_ctor, &mb_ctor_arg,
                                    socket_id, 0);
        else 
                rte_mp = rte_mempool_create(pool_name, nb_mbuf, mb_size,
                                    (unsigned) mb_mempool_cache,
                                    sizeof(struct rte_pktmbuf_pool_private),
                                    testpmd_mbuf_pool_ctor, &mbp_ctor_arg,
                                    testpmd_mbuf_ctor, &mb_ctor_arg,
                                    socket_id, 0);

#endif

        if (rte_mp == NULL) {
                rte_exit(EXIT_FAILURE, "Creation of mbuf pool for socket %u "
                                                "failed\n", socket_id);
        } else if (verbose_level > 0) {
                rte_mempool_dump(rte_mp);
        }
}

/*
 * Check given socket id is valid or not with NUMA mode,
 * if valid, return 0, else return -1
 */
static int
check_socket_id(const unsigned int socket_id)
{
        static int warning_once = 0;

        if (socket_id >= MAX_SOCKET) {
                if (!warning_once && numa_support)
                        printf("Warning: NUMA should be configured manually by"
                               " using --port-numa-config and"
                               " --ring-numa-config parameters along with"
                               " --numa.\n");
                warning_once = 1;
                return -1;
        }
        return 0;
}

static void
init_config(void)
{
        portid_t pid;
        struct rte_port *port;
        struct rte_mempool *mbp;
        unsigned int nb_mbuf_per_pool;
        lcoreid_t  lc_id;
        uint8_t port_per_socket[MAX_SOCKET];

        memset(port_per_socket,0,MAX_SOCKET);
        /* Configuration of logical cores. */
        fwd_lcores = rte_zmalloc("testpmd: fwd_lcores",
                                sizeof(struct fwd_lcore *) * nb_lcores,
                                CACHE_LINE_SIZE);
        if (fwd_lcores == NULL) {
                rte_exit(EXIT_FAILURE, "rte_zmalloc(%d (struct fwd_lcore *)) "
                                                        "failed\n", nb_lcores);
        }
        for (lc_id = 0; lc_id < nb_lcores; lc_id++) {
                fwd_lcores[lc_id] = rte_zmalloc("testpmd: struct fwd_lcore",
                                               sizeof(struct fwd_lcore),
                                               CACHE_LINE_SIZE);
                if (fwd_lcores[lc_id] == NULL) {
                        rte_exit(EXIT_FAILURE, "rte_zmalloc(struct fwd_lcore) "
                                                                "failed\n");
                }
                fwd_lcores[lc_id]->cpuid_idx = lc_id;
        }

        /*
         * Create pools of mbuf.
         * If NUMA support is disabled, create a single pool of mbuf in
         * socket 0 memory by default.
         * Otherwise, create a pool of mbuf in the memory of sockets 0 and 1.
         *
         * Use the maximum value of nb_rxd and nb_txd here, then nb_rxd and
         * nb_txd can be configured at run time.
         */
        if (param_total_num_mbufs) 
                nb_mbuf_per_pool = param_total_num_mbufs;
        else {
                nb_mbuf_per_pool = RTE_TEST_RX_DESC_MAX + (nb_lcores * mb_mempool_cache)
                                + RTE_TEST_TX_DESC_MAX + MAX_PKT_BURST;
                
                if (!numa_support) 
                        nb_mbuf_per_pool = (nb_mbuf_per_pool * nb_ports);
        }

        if (!numa_support) {
                if (socket_num == UMA_NO_CONFIG)
                        mbuf_pool_create(mbuf_data_size, nb_mbuf_per_pool, 0);
                else
                        mbuf_pool_create(mbuf_data_size, nb_mbuf_per_pool,
                                                 socket_num);
        }

        /* Configuration of Ethernet ports. */
        ports = rte_zmalloc("testpmd: ports",
                            sizeof(struct rte_port) * nb_ports,
                            CACHE_LINE_SIZE);
        if (ports == NULL) {
                rte_exit(EXIT_FAILURE, "rte_zmalloc(%d struct rte_port) "
                                                        "failed\n", nb_ports);
        }
        
        for (pid = 0; pid < nb_ports; pid++) {
                port = &ports[pid];
                rte_eth_dev_info_get(pid, &port->dev_info);

                if (numa_support) {
                        if (port_numa[pid] != NUMA_NO_CONFIG) 
                                port_per_socket[port_numa[pid]]++;
                        else {
                                uint32_t socket_id = rte_eth_dev_socket_id(pid);

                                /* if socket_id is invalid, set to 0 */
                                if (check_socket_id(socket_id) < 0)
                                        socket_id = 0;
                                port_per_socket[socket_id]++; 
                        }
                }

                /* set flag to initialize port/queue */
                port->need_reconfig = 1;
                port->need_reconfig_queues = 1;
        }

        if (numa_support) {
                uint8_t i;
                unsigned int nb_mbuf;

                if (param_total_num_mbufs)
                        nb_mbuf_per_pool = nb_mbuf_per_pool/nb_ports;

                for (i = 0; i < MAX_SOCKET; i++) {
                        nb_mbuf = (nb_mbuf_per_pool * 
                                                port_per_socket[i]);
                        if (nb_mbuf) 
                                mbuf_pool_create(mbuf_data_size,
                                                nb_mbuf,i);
                }
        }
        init_port_config();

        /*
         * Records which Mbuf pool to use by each logical core, if needed.
         */
        for (lc_id = 0; lc_id < nb_lcores; lc_id++) {
                mbp = mbuf_pool_find(rte_lcore_to_socket_id(lc_id));
                if (mbp == NULL)
                        mbp = mbuf_pool_find(0);
                fwd_lcores[lc_id]->mbp = mbp;
        }

        /* Configuration of packet forwarding streams. */
        if (init_fwd_streams() < 0)
                rte_exit(EXIT_FAILURE, "FAIL from init_fwd_streams()\n");
}

int
init_fwd_streams(void)
{
        portid_t pid;
        struct rte_port *port;
        streamid_t sm_id, nb_fwd_streams_new;

        /* set socket id according to numa or not */
        for (pid = 0; pid < nb_ports; pid++) {
                port = &ports[pid];
                if (nb_rxq > port->dev_info.max_rx_queues) {
                        printf("Fail: nb_rxq(%d) is greater than "
                                "max_rx_queues(%d)\n", nb_rxq,
                                port->dev_info.max_rx_queues);
                        return -1;
                }
                if (nb_txq > port->dev_info.max_tx_queues) {
                        printf("Fail: nb_txq(%d) is greater than "
                                "max_tx_queues(%d)\n", nb_txq,
                                port->dev_info.max_tx_queues);
                        return -1;
                }
                if (numa_support) {
                        if (port_numa[pid] != NUMA_NO_CONFIG)
                                port->socket_id = port_numa[pid];
                        else {
                                port->socket_id = rte_eth_dev_socket_id(pid);

                                /* if socket_id is invalid, set to 0 */
                                if (check_socket_id(port->socket_id) < 0)
                                        port->socket_id = 0;
                        }
                }
                else {
                        if (socket_num == UMA_NO_CONFIG)         
                                port->socket_id = 0;
                        else 
                                port->socket_id = socket_num;   
                }
        }

        nb_fwd_streams_new = (streamid_t)(nb_ports * nb_rxq);
        if (nb_fwd_streams_new == nb_fwd_streams)
                return 0;
        /* clear the old */
        if (fwd_streams != NULL) {
                for (sm_id = 0; sm_id < nb_fwd_streams; sm_id++) {
                        if (fwd_streams[sm_id] == NULL)
                                continue;
                        rte_free(fwd_streams[sm_id]);
                        fwd_streams[sm_id] = NULL;
                }
                rte_free(fwd_streams);
                fwd_streams = NULL;
        }

        /* init new */
        nb_fwd_streams = nb_fwd_streams_new;
        fwd_streams = rte_zmalloc("testpmd: fwd_streams",
                sizeof(struct fwd_stream *) * nb_fwd_streams, CACHE_LINE_SIZE);
        if (fwd_streams == NULL)
                rte_exit(EXIT_FAILURE, "rte_zmalloc(%d (struct fwd_stream *)) "
                                                "failed\n", nb_fwd_streams);

        for (sm_id = 0; sm_id < nb_fwd_streams; sm_id++) {
                fwd_streams[sm_id] = rte_zmalloc("testpmd: struct fwd_stream",
                                sizeof(struct fwd_stream), CACHE_LINE_SIZE);
                if (fwd_streams[sm_id] == NULL)
                        rte_exit(EXIT_FAILURE, "rte_zmalloc(struct fwd_stream)"
                                                                " failed\n");
        }

        return 0;
}

#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
static void
pkt_burst_stats_display(const char *rx_tx, struct pkt_burst_stats *pbs)
{
        unsigned int total_burst;
        unsigned int nb_burst;
        unsigned int burst_stats[3];
        uint16_t pktnb_stats[3];
        uint16_t nb_pkt;
        int burst_percent[3];

        /*
         * First compute the total number of packet bursts and the
         * two highest numbers of bursts of the same number of packets.
         */
        total_burst = 0;
        burst_stats[0] = burst_stats[1] = burst_stats[2] = 0;
        pktnb_stats[0] = pktnb_stats[1] = pktnb_stats[2] = 0;
        for (nb_pkt = 0; nb_pkt < MAX_PKT_BURST; nb_pkt++) {
                nb_burst = pbs->pkt_burst_spread[nb_pkt];
                if (nb_burst == 0)
                        continue;
                total_burst += nb_burst;
                if (nb_burst > burst_stats[0]) {
                        burst_stats[1] = burst_stats[0];
                        pktnb_stats[1] = pktnb_stats[0];
                        burst_stats[0] = nb_burst;
                        pktnb_stats[0] = nb_pkt;
                }
        }
        if (total_burst == 0)
                return;
        burst_percent[0] = (burst_stats[0] * 100) / total_burst;
        printf("  %s-bursts : %u [%d%% of %d pkts", rx_tx, total_burst,
               burst_percent[0], (int) pktnb_stats[0]);
        if (burst_stats[0] == total_burst) {
                printf("]\n");
                return;
        }
        if (burst_stats[0] + burst_stats[1] == total_burst) {
                printf(" + %d%% of %d pkts]\n",
                       100 - burst_percent[0], pktnb_stats[1]);
                return;
        }
        burst_percent[1] = (burst_stats[1] * 100) / total_burst;
        burst_percent[2] = 100 - (burst_percent[0] + burst_percent[1]);
        if ((burst_percent[1] == 0) || (burst_percent[2] == 0)) {
                printf(" + %d%% of others]\n", 100 - burst_percent[0]);
                return;
        }
        printf(" + %d%% of %d pkts + %d%% of others]\n",
               burst_percent[1], (int) pktnb_stats[1], burst_percent[2]);
}
#endif /* RTE_TEST_PMD_RECORD_BURST_STATS */

static void
fwd_port_stats_display(portid_t port_id, struct rte_eth_stats *stats)
{
        struct rte_port *port;
        uint8_t i;

        static const char *fwd_stats_border = "----------------------";

        port = &ports[port_id];
        printf("\n  %s Forward statistics for port %-2d %s\n",
               fwd_stats_border, port_id, fwd_stats_border);

        if ((!port->rx_queue_stats_mapping_enabled) && (!port->tx_queue_stats_mapping_enabled)) {
                printf("  RX-packets: %-14"PRIu64" RX-dropped: %-14"PRIu64"RX-total: "
                       "%-"PRIu64"\n",
                       stats->ipackets, stats->ierrors,
                       (uint64_t) (stats->ipackets + stats->ierrors));

                if (cur_fwd_eng == &csum_fwd_engine)
                        printf("  Bad-ipcsum: %-14"PRIu64" Bad-l4csum: %-14"PRIu64" \n",
                               port->rx_bad_ip_csum, port->rx_bad_l4_csum);

                printf("  TX-packets: %-14"PRIu64" TX-dropped: %-14"PRIu64"TX-total: "
                       "%-"PRIu64"\n",
                       stats->opackets, port->tx_dropped,
                       (uint64_t) (stats->opackets + port->tx_dropped));

                if (stats->rx_nombuf > 0)
                        printf("  RX-nombufs: %-14"PRIu64"\n", stats->rx_nombuf);

        }
        else {
                printf("  RX-packets:             %14"PRIu64"    RX-dropped:%14"PRIu64"    RX-total:"
                       "%14"PRIu64"\n",
                       stats->ipackets, stats->ierrors,
                       (uint64_t) (stats->ipackets + stats->ierrors));

                if (cur_fwd_eng == &csum_fwd_engine)
                        printf("  Bad-ipcsum:%14"PRIu64"    Bad-l4csum:%14"PRIu64"\n",
                               port->rx_bad_ip_csum, port->rx_bad_l4_csum);

                printf("  TX-packets:             %14"PRIu64"    TX-dropped:%14"PRIu64"    TX-total:"
                       "%14"PRIu64"\n",
                       stats->opackets, port->tx_dropped,
                       (uint64_t) (stats->opackets + port->tx_dropped));

                if (stats->rx_nombuf > 0)
                        printf("  RX-nombufs:%14"PRIu64"\n", stats->rx_nombuf);
        }

        /* Display statistics of XON/XOFF pause frames, if any. */
        if ((stats->tx_pause_xon  | stats->rx_pause_xon |
             stats->tx_pause_xoff | stats->rx_pause_xoff) > 0) {
                printf("  RX-XOFF:    %-14"PRIu64" RX-XON:     %-14"PRIu64"\n",
                       stats->rx_pause_xoff, stats->rx_pause_xon);
                printf("  TX-XOFF:    %-14"PRIu64" TX-XON:     %-14"PRIu64"\n",
                       stats->tx_pause_xoff, stats->tx_pause_xon);
        }

#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
        if (port->rx_stream)
                pkt_burst_stats_display("RX",
                        &port->rx_stream->rx_burst_stats);
        if (port->tx_stream)
                pkt_burst_stats_display("TX",
                        &port->tx_stream->tx_burst_stats);
#endif
        /* stats fdir */
        if (fdir_conf.mode != RTE_FDIR_MODE_NONE)
                printf("  Fdirmiss:%14"PRIu64"    Fdirmatch:%14"PRIu64"\n",
                       stats->fdirmiss,
                       stats->fdirmatch);

        if (port->rx_queue_stats_mapping_enabled) {
                printf("\n");
                for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS; i++) {
                        printf("  Stats reg %2d RX-packets:%14"PRIu64
                               "     RX-errors:%14"PRIu64
                               "    RX-bytes:%14"PRIu64"\n",
                               i, stats->q_ipackets[i], stats->q_errors[i], stats->q_ibytes[i]);
                }
                printf("\n");
        }
        if (port->tx_queue_stats_mapping_enabled) {
                for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS; i++) {
                        printf("  Stats reg %2d TX-packets:%14"PRIu64
                               "                                 TX-bytes:%14"PRIu64"\n",
                               i, stats->q_opackets[i], stats->q_obytes[i]);
                }
        }

        printf("  %s--------------------------------%s\n",
               fwd_stats_border, fwd_stats_border);
}

static void
fwd_stream_stats_display(streamid_t stream_id)
{
        struct fwd_stream *fs;
        static const char *fwd_top_stats_border = "-------";

        fs = fwd_streams[stream_id];
        if ((fs->rx_packets == 0) && (fs->tx_packets == 0) &&
            (fs->fwd_dropped == 0))
                return;
        printf("\n  %s Forward Stats for RX Port=%2d/Queue=%2d -> "
               "TX Port=%2d/Queue=%2d %s\n",
               fwd_top_stats_border, fs->rx_port, fs->rx_queue,
               fs->tx_port, fs->tx_queue, fwd_top_stats_border);
        printf("  RX-packets: %-14u TX-packets: %-14u TX-dropped: %-14u",
               fs->rx_packets, fs->tx_packets, fs->fwd_dropped);

        /* if checksum mode */
        if (cur_fwd_eng == &csum_fwd_engine) {
               printf("  RX- bad IP checksum: %-14u  Rx- bad L4 checksum: "
                        "%-14u\n", fs->rx_bad_ip_csum, fs->rx_bad_l4_csum);
        }

#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
        pkt_burst_stats_display("RX", &fs->rx_burst_stats);
        pkt_burst_stats_display("TX", &fs->tx_burst_stats);
#endif
}

static void
flush_fwd_rx_queues(void)
{
        struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
        portid_t  rxp;
        portid_t port_id;
        queueid_t rxq;
        uint16_t  nb_rx;
        uint16_t  i;
        uint8_t   j;

        for (j = 0; j < 2; j++) {
                for (rxp = 0; rxp < cur_fwd_config.nb_fwd_ports; rxp++) {
                        for (rxq = 0; rxq < nb_rxq; rxq++) {
                                port_id = fwd_ports_ids[rxp];
                                do {
                                        nb_rx = rte_eth_rx_burst(port_id, rxq,
                                                pkts_burst, MAX_PKT_BURST);
                                        for (i = 0; i < nb_rx; i++)
                                                rte_pktmbuf_free(pkts_burst[i]);
                                } while (nb_rx > 0);
                        }
                }
                rte_delay_ms(10); /* wait 10 milli-seconds before retrying */
        }
}

static void
run_pkt_fwd_on_lcore(struct fwd_lcore *fc, packet_fwd_t pkt_fwd)
{
        struct fwd_stream **fsm;
        streamid_t nb_fs;
        streamid_t sm_id;

        fsm = &fwd_streams[fc->stream_idx];
        nb_fs = fc->stream_nb;
        do {
                for (sm_id = 0; sm_id < nb_fs; sm_id++)
                        (*pkt_fwd)(fsm[sm_id]);
        } while (! fc->stopped);
}

static int
start_pkt_forward_on_core(void *fwd_arg)
{
        run_pkt_fwd_on_lcore((struct fwd_lcore *) fwd_arg,
                             cur_fwd_config.fwd_eng->packet_fwd);
        return 0;
}

/*
 * Run the TXONLY packet forwarding engine to send a single burst of packets.
 * Used to start communication flows in network loopback test configurations.
 */
static int
run_one_txonly_burst_on_core(void *fwd_arg)
{
        struct fwd_lcore *fwd_lc;
        struct fwd_lcore tmp_lcore;

        fwd_lc = (struct fwd_lcore *) fwd_arg;
        tmp_lcore = *fwd_lc;
        tmp_lcore.stopped = 1;
        run_pkt_fwd_on_lcore(&tmp_lcore, tx_only_engine.packet_fwd);
        return 0;
}

/*
 * Launch packet forwarding:
 *     - Setup per-port forwarding context.
 *     - launch logical cores with their forwarding configuration.
 */
static void
launch_packet_forwarding(lcore_function_t *pkt_fwd_on_lcore)
{
        port_fwd_begin_t port_fwd_begin;
        unsigned int i;
        unsigned int lc_id;
        int diag;

        port_fwd_begin = cur_fwd_config.fwd_eng->port_fwd_begin;
        if (port_fwd_begin != NULL) {
                for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++)
                        (*port_fwd_begin)(fwd_ports_ids[i]);
        }
        for (i = 0; i < cur_fwd_config.nb_fwd_lcores; i++) {
                lc_id = fwd_lcores_cpuids[i];
                if ((interactive == 0) || (lc_id != rte_lcore_id())) {
                        fwd_lcores[i]->stopped = 0;
                        diag = rte_eal_remote_launch(pkt_fwd_on_lcore,
                                                     fwd_lcores[i], lc_id);
                        if (diag != 0)
                                printf("launch lcore %u failed - diag=%d\n",
                                       lc_id, diag);
                }
        }
}

/*
 * Launch packet forwarding configuration.
 */
void
start_packet_forwarding(int with_tx_first)
{
        port_fwd_begin_t port_fwd_begin;
        port_fwd_end_t  port_fwd_end;
        struct rte_port *port;
        unsigned int i;
        portid_t   pt_id;
        streamid_t sm_id;

        if (all_ports_started() == 0) {
                printf("Not all ports were started\n");
                return;
        }
        if (test_done == 0) {
                printf("Packet forwarding already started\n");
                return;
        }
        if(dcb_test) {
                for (i = 0; i < nb_fwd_ports; i++) {
                        pt_id = fwd_ports_ids[i];
                        port = &ports[pt_id];
                        if (!port->dcb_flag) {
                                printf("In DCB mode, all forwarding ports must "
                                       "be configured in this mode.\n");
                                return;
                        }
                }
                if (nb_fwd_lcores == 1) {
                        printf("In DCB mode,the nb forwarding cores "
                               "should be larger than 1.\n");
                        return;
                }
        }
        test_done = 0;

        if(!no_flush_rx)
                flush_fwd_rx_queues();

        fwd_config_setup();
        rxtx_config_display();

        for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) {
                pt_id = fwd_ports_ids[i];
                port = &ports[pt_id];
                rte_eth_stats_get(pt_id, &port->stats);
                port->tx_dropped = 0;

                map_port_queue_stats_mapping_registers(pt_id, port);
        }
        for (sm_id = 0; sm_id < cur_fwd_config.nb_fwd_streams; sm_id++) {
                fwd_streams[sm_id]->rx_packets = 0;
                fwd_streams[sm_id]->tx_packets = 0;
                fwd_streams[sm_id]->fwd_dropped = 0;
                fwd_streams[sm_id]->rx_bad_ip_csum = 0;
                fwd_streams[sm_id]->rx_bad_l4_csum = 0;

#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
                memset(&fwd_streams[sm_id]->rx_burst_stats, 0,
                       sizeof(fwd_streams[sm_id]->rx_burst_stats));
                memset(&fwd_streams[sm_id]->tx_burst_stats, 0,
                       sizeof(fwd_streams[sm_id]->tx_burst_stats));
#endif
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
                fwd_streams[sm_id]->core_cycles = 0;
#endif
        }
        if (with_tx_first) {
                port_fwd_begin = tx_only_engine.port_fwd_begin;
                if (port_fwd_begin != NULL) {
                        for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++)
                                (*port_fwd_begin)(fwd_ports_ids[i]);
                }
                launch_packet_forwarding(run_one_txonly_burst_on_core);
                rte_eal_mp_wait_lcore();
                port_fwd_end = tx_only_engine.port_fwd_end;
                if (port_fwd_end != NULL) {
                        for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++)
                                (*port_fwd_end)(fwd_ports_ids[i]);
                }
        }
        launch_packet_forwarding(start_pkt_forward_on_core);
}

void
stop_packet_forwarding(void)
{
        struct rte_eth_stats stats;
        struct rte_port *port;
        port_fwd_end_t  port_fwd_end;
        int i;
        portid_t   pt_id;
        streamid_t sm_id;
        lcoreid_t  lc_id;
        uint64_t total_recv;
        uint64_t total_xmit;
        uint64_t total_rx_dropped;
        uint64_t total_tx_dropped;
        uint64_t total_rx_nombuf;
        uint64_t tx_dropped;
        uint64_t rx_bad_ip_csum;
        uint64_t rx_bad_l4_csum;
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
        uint64_t fwd_cycles;
#endif
        static const char *acc_stats_border = "+++++++++++++++";

        if (all_ports_started() == 0) {
                printf("Not all ports were started\n");
                return;
        }
        if (test_done) {
                printf("Packet forwarding not started\n");
                return;
        }
        printf("Telling cores to stop...");
        for (lc_id = 0; lc_id < cur_fwd_config.nb_fwd_lcores; lc_id++)
                fwd_lcores[lc_id]->stopped = 1;
        printf("\nWaiting for lcores to finish...\n");
        rte_eal_mp_wait_lcore();
        port_fwd_end = cur_fwd_config.fwd_eng->port_fwd_end;
        if (port_fwd_end != NULL) {
                for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) {
                        pt_id = fwd_ports_ids[i];
                        (*port_fwd_end)(pt_id);
                }
        }
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
        fwd_cycles = 0;
#endif
        for (sm_id = 0; sm_id < cur_fwd_config.nb_fwd_streams; sm_id++) {
                if (cur_fwd_config.nb_fwd_streams >
                    cur_fwd_config.nb_fwd_ports) {
                        fwd_stream_stats_display(sm_id);
                        ports[fwd_streams[sm_id]->tx_port].tx_stream = NULL;
                        ports[fwd_streams[sm_id]->rx_port].rx_stream = NULL;
                } else {
                        ports[fwd_streams[sm_id]->tx_port].tx_stream =
                                fwd_streams[sm_id];
                        ports[fwd_streams[sm_id]->rx_port].rx_stream =
                                fwd_streams[sm_id];
                }
                tx_dropped = ports[fwd_streams[sm_id]->tx_port].tx_dropped;
                tx_dropped = (uint64_t) (tx_dropped +
                                         fwd_streams[sm_id]->fwd_dropped);
                ports[fwd_streams[sm_id]->tx_port].tx_dropped = tx_dropped;

                rx_bad_ip_csum =
                        ports[fwd_streams[sm_id]->rx_port].rx_bad_ip_csum;
                rx_bad_ip_csum = (uint64_t) (rx_bad_ip_csum +
                                         fwd_streams[sm_id]->rx_bad_ip_csum);
                ports[fwd_streams[sm_id]->rx_port].rx_bad_ip_csum =
                                                        rx_bad_ip_csum;

                rx_bad_l4_csum =
                        ports[fwd_streams[sm_id]->rx_port].rx_bad_l4_csum;
                rx_bad_l4_csum = (uint64_t) (rx_bad_l4_csum +
                                         fwd_streams[sm_id]->rx_bad_l4_csum);
                ports[fwd_streams[sm_id]->rx_port].rx_bad_l4_csum =
                                                        rx_bad_l4_csum;

#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
                fwd_cycles = (uint64_t) (fwd_cycles +
                                         fwd_streams[sm_id]->core_cycles);
#endif
        }
        total_recv = 0;
        total_xmit = 0;
        total_rx_dropped = 0;
        total_tx_dropped = 0;
        total_rx_nombuf  = 0;
        for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) {
                pt_id = fwd_ports_ids[i];

                port = &ports[pt_id];
                rte_eth_stats_get(pt_id, &stats);
                stats.ipackets -= port->stats.ipackets;
                port->stats.ipackets = 0;
                stats.opackets -= port->stats.opackets;
                port->stats.opackets = 0;
                stats.ibytes   -= port->stats.ibytes;
                port->stats.ibytes = 0;
                stats.obytes   -= port->stats.obytes;
                port->stats.obytes = 0;
                stats.ierrors  -= port->stats.ierrors;
                port->stats.ierrors = 0;
                stats.oerrors  -= port->stats.oerrors;
                port->stats.oerrors = 0;
                stats.rx_nombuf -= port->stats.rx_nombuf;
                port->stats.rx_nombuf = 0;
                stats.fdirmatch -= port->stats.fdirmatch;
                port->stats.rx_nombuf = 0;
                stats.fdirmiss -= port->stats.fdirmiss;
                port->stats.rx_nombuf = 0;

                total_recv += stats.ipackets;
                total_xmit += stats.opackets;
                total_rx_dropped += stats.ierrors;
                total_tx_dropped += port->tx_dropped;
                total_rx_nombuf  += stats.rx_nombuf;

                fwd_port_stats_display(pt_id, &stats);
        }
        printf("\n  %s Accumulated forward statistics for all ports"
               "%s\n",
               acc_stats_border, acc_stats_border);
        printf("  RX-packets: %-14"PRIu64" RX-dropped: %-14"PRIu64"RX-total: "
               "%-"PRIu64"\n"
               "  TX-packets: %-14"PRIu64" TX-dropped: %-14"PRIu64"TX-total: "
               "%-"PRIu64"\n",
               total_recv, total_rx_dropped, total_recv + total_rx_dropped,
               total_xmit, total_tx_dropped, total_xmit + total_tx_dropped);
        if (total_rx_nombuf > 0)
                printf("  RX-nombufs: %-14"PRIu64"\n", total_rx_nombuf);
        printf("  %s++++++++++++++++++++++++++++++++++++++++++++++"
               "%s\n",
               acc_stats_border, acc_stats_border);
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
        if (total_recv > 0)
                printf("\n  CPU cycles/packet=%u (total cycles="
                       "%"PRIu64" / total RX packets=%"PRIu64")\n",
                       (unsigned int)(fwd_cycles / total_recv),
                       fwd_cycles, total_recv);
#endif
        printf("\nDone.\n");
        test_done = 1;
}

static int
all_ports_started(void)
{
        portid_t pi;
        struct rte_port *port;

        for (pi = 0; pi < nb_ports; pi++) {
                port = &ports[pi];
                /* Check if there is a port which is not started */
                if (port->port_status != RTE_PORT_STARTED)
                        return 0;
        }

        /* No port is not started */
        return 1;
}

int
start_port(portid_t pid)
{
        int diag, need_check_link_status = 0;
        portid_t pi;
        queueid_t qi;
        struct rte_port *port;
        uint8_t *mac_addr;

        if (test_done == 0) {
                printf("Please stop forwarding first\n");
                return -1;
        }

        if (init_fwd_streams() < 0) {
                printf("Fail from init_fwd_streams()\n");
                return -1;
        }
        
        if(dcb_config)
                dcb_test = 1;
        for (pi = 0; pi < nb_ports; pi++) {
                if (pid < nb_ports && pid != pi)
                        continue;

                port = &ports[pi];
                if (rte_atomic16_cmpset(&(port->port_status), RTE_PORT_STOPPED,
                                                 RTE_PORT_HANDLING) == 0) {
                        printf("Port %d is now not stopped\n", pi);
                        continue;
                }

                if (port->need_reconfig > 0) {
                        port->need_reconfig = 0;

                        printf("Configuring Port %d (socket %u)\n", pi,
                                        port->socket_id);
                        /* configure port */
                        diag = rte_eth_dev_configure(pi, nb_rxq, nb_txq,
                                                &(port->dev_conf));
                        if (diag != 0) {
                                if (rte_atomic16_cmpset(&(port->port_status),
                                RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
                                        printf("Port %d can not be set back "
                                                        "to stopped\n", pi);
                                printf("Fail to configure port %d\n", pi);
                                /* try to reconfigure port next time */
                                port->need_reconfig = 1;
                                return -1;
                        }
                }
                if (port->need_reconfig_queues > 0) {
                        port->need_reconfig_queues = 0;
                        /* setup tx queues */
                        for (qi = 0; qi < nb_txq; qi++) {
                                if ((numa_support) &&
                                        (txring_numa[pi] != NUMA_NO_CONFIG)) 
                                        diag = rte_eth_tx_queue_setup(pi, qi,
                                                nb_txd,txring_numa[pi],
                                                &(port->tx_conf));
                                else
                                        diag = rte_eth_tx_queue_setup(pi, qi, 
                                                nb_txd,port->socket_id,
                                                &(port->tx_conf));
                                        
                                if (diag == 0)
                                        continue;

                                /* Fail to setup tx queue, return */
                                if (rte_atomic16_cmpset(&(port->port_status),
                                                        RTE_PORT_HANDLING,
                                                        RTE_PORT_STOPPED) == 0)
                                        printf("Port %d can not be set back "
                                                        "to stopped\n", pi);
                                printf("Fail to configure port %d tx queues\n", pi);
                                /* try to reconfigure queues next time */
                                port->need_reconfig_queues = 1;
                                return -1;
                        }
                        /* setup rx queues */
                        for (qi = 0; qi < nb_rxq; qi++) {
                                if ((numa_support) && 
                                        (rxring_numa[pi] != NUMA_NO_CONFIG)) {
                                        struct rte_mempool * mp = 
                                                mbuf_pool_find(rxring_numa[pi]);
                                        if (mp == NULL) {
                                                printf("Failed to setup RX queue:"
                                                        "No mempool allocation"
                                                        "on the socket %d\n",
                                                        rxring_numa[pi]);
                                                return -1;
                                        }
                                        
                                        diag = rte_eth_rx_queue_setup(pi, qi,
                                             nb_rxd,rxring_numa[pi],
                                             &(port->rx_conf),mp);
                                }
                                else
                                        diag = rte_eth_rx_queue_setup(pi, qi, 
                                             nb_rxd,port->socket_id,
                                             &(port->rx_conf),
                                             mbuf_pool_find(port->socket_id));

                                if (diag == 0)
                                        continue;


                                /* Fail to setup rx queue, return */
                                if (rte_atomic16_cmpset(&(port->port_status),
                                                        RTE_PORT_HANDLING,
                                                        RTE_PORT_STOPPED) == 0)
                                        printf("Port %d can not be set back "
                                                        "to stopped\n", pi);
                                printf("Fail to configure port %d rx queues\n", pi);
                                /* try to reconfigure queues next time */
                                port->need_reconfig_queues = 1;
                                return -1;
                        }
                }
                /* start port */
                if (rte_eth_dev_start(pi) < 0) {
                        printf("Fail to start port %d\n", pi);

                        /* Fail to setup rx queue, return */
                        if (rte_atomic16_cmpset(&(port->port_status),
                                RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
                                printf("Port %d can not be set back to "
                                                        "stopped\n", pi);
                        continue;
                }

                if (rte_atomic16_cmpset(&(port->port_status),
                        RTE_PORT_HANDLING, RTE_PORT_STARTED) == 0)
                        printf("Port %d can not be set into started\n", pi);

                mac_addr = port->eth_addr.addr_bytes;
                printf("Port %d: %02X:%02X:%02X:%02X:%02X:%02X\n", pi,
                       mac_addr[0], mac_addr[1], mac_addr[2],
                       mac_addr[3], mac_addr[4], mac_addr[5]);

                /* at least one port started, need checking link status */
                need_check_link_status = 1;
        }

        if (need_check_link_status && !no_link_check)
                check_all_ports_link_status(nb_ports, RTE_PORT_ALL);
        else
                printf("Please stop the ports first\n");

        printf("Done\n");
        return 0;
}

void
stop_port(portid_t pid)
{
        portid_t pi;
        struct rte_port *port;
        int need_check_link_status = 0;

        if (test_done == 0) {
                printf("Please stop forwarding first\n");
                return;
        }
        if (dcb_test) {
                dcb_test = 0;
                dcb_config = 0;
        }
        printf("Stopping ports...\n");

        for (pi = 0; pi < nb_ports; pi++) {
                if (pid < nb_ports && pid != pi)
                        continue;

                port = &ports[pi];
                if (rte_atomic16_cmpset(&(port->port_status), RTE_PORT_STARTED,
                                                RTE_PORT_HANDLING) == 0)
                        continue;

                rte_eth_dev_stop(pi);

                if (rte_atomic16_cmpset(&(port->port_status),
                        RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
                        printf("Port %d can not be set into stopped\n", pi);
                need_check_link_status = 1;
        }
        if (need_check_link_status && !no_link_check)
                check_all_ports_link_status(nb_ports, RTE_PORT_ALL);

        printf("Done\n");
}

void
close_port(portid_t pid)
{
        portid_t pi;
        struct rte_port *port;

        if (test_done == 0) {
                printf("Please stop forwarding first\n");
                return;
        }

        printf("Closing ports...\n");

        for (pi = 0; pi < nb_ports; pi++) {
                if (pid < nb_ports && pid != pi)
                        continue;

                port = &ports[pi];
                if (rte_atomic16_cmpset(&(port->port_status),
                        RTE_PORT_STOPPED, RTE_PORT_HANDLING) == 0) {
                        printf("Port %d is now not stopped\n", pi);
                        continue;
                }

                rte_eth_dev_close(pi);

                if (rte_atomic16_cmpset(&(port->port_status),
                        RTE_PORT_HANDLING, RTE_PORT_CLOSED) == 0)
                        printf("Port %d can not be set into stopped\n", pi);
        }

        printf("Done\n");
}

int
all_ports_stopped(void)
{
        portid_t pi;
        struct rte_port *port;

        for (pi = 0; pi < nb_ports; pi++) {
                port = &ports[pi];
                if (port->port_status != RTE_PORT_STOPPED)
                        return 0;
        }

        return 1;
}

void
pmd_test_exit(void)
{
        portid_t pt_id;

        for (pt_id = 0; pt_id < nb_ports; pt_id++) {
                printf("Stopping port %d...", pt_id);
                fflush(stdout);
                rte_eth_dev_close(pt_id);
                printf("done\n");
        }
        printf("bye...\n");
}

typedef void (*cmd_func_t)(void);
struct pmd_test_command {
        const char *cmd_name;
        cmd_func_t cmd_func;
};

#define PMD_TEST_CMD_NB (sizeof(pmd_test_menu) / sizeof(pmd_test_menu[0]))

/* 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("Checking link statuses...\n");
        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) {
                        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;
                }
        }
}

static int
set_tx_queue_stats_mapping_registers(uint8_t port_id, struct rte_port *port)
{
        uint16_t i;
        int diag;
        uint8_t mapping_found = 0;

        for (i = 0; i < nb_tx_queue_stats_mappings; i++) {
                if ((tx_queue_stats_mappings[i].port_id == port_id) &&
                                (tx_queue_stats_mappings[i].queue_id < nb_txq )) {
                        diag = rte_eth_dev_set_tx_queue_stats_mapping(port_id,
                                        tx_queue_stats_mappings[i].queue_id,
                                        tx_queue_stats_mappings[i].stats_counter_id);
                        if (diag != 0)
                                return diag;
                        mapping_found = 1;
                }
        }
        if (mapping_found)
                port->tx_queue_stats_mapping_enabled = 1;
        return 0;
}

static int
set_rx_queue_stats_mapping_registers(uint8_t port_id, struct rte_port *port)
{
        uint16_t i;
        int diag;
        uint8_t mapping_found = 0;

        for (i = 0; i < nb_rx_queue_stats_mappings; i++) {
                if ((rx_queue_stats_mappings[i].port_id == port_id) &&
                                (rx_queue_stats_mappings[i].queue_id < nb_rxq )) {
                        diag = rte_eth_dev_set_rx_queue_stats_mapping(port_id,
                                        rx_queue_stats_mappings[i].queue_id,
                                        rx_queue_stats_mappings[i].stats_counter_id);
                        if (diag != 0)
                                return diag;
                        mapping_found = 1;
                }
        }
        if (mapping_found)
                port->rx_queue_stats_mapping_enabled = 1;
        return 0;
}

static void
map_port_queue_stats_mapping_registers(uint8_t pi, struct rte_port *port)
{
        int diag = 0;

        diag = set_tx_queue_stats_mapping_registers(pi, port);
        if (diag != 0) {
                if (diag == -ENOTSUP) {
                        port->tx_queue_stats_mapping_enabled = 0;
                        printf("TX queue stats mapping not supported port id=%d\n", pi);
                }
                else
                        rte_exit(EXIT_FAILURE,
                                        "set_tx_queue_stats_mapping_registers "
                                        "failed for port id=%d diag=%d\n",
                                        pi, diag);
        }

        diag = set_rx_queue_stats_mapping_registers(pi, port);
        if (diag != 0) {
                if (diag == -ENOTSUP) {
                        port->rx_queue_stats_mapping_enabled = 0;
                        printf("RX queue stats mapping not supported port id=%d\n", pi);
                }
                else
                        rte_exit(EXIT_FAILURE,
                                        "set_rx_queue_stats_mapping_registers "
                                        "failed for port id=%d diag=%d\n",
                                        pi, diag);
        }
}

void
init_port_config(void)
{
        portid_t pid;
        struct rte_port *port;

        for (pid = 0; pid < nb_ports; pid++) {
                port = &ports[pid];
                port->dev_conf.rxmode = rx_mode;
                port->dev_conf.fdir_conf = fdir_conf;
                if (nb_rxq > 1) {
                        port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
                        port->dev_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
                } else {
                        port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
                        port->dev_conf.rx_adv_conf.rss_conf.rss_hf = 0;
                }

                /* In SR-IOV mode, RSS mode is not available */
                if (port->dcb_flag == 0 && port->dev_info.max_vfs == 0) {
                        if( port->dev_conf.rx_adv_conf.rss_conf.rss_hf != 0)
                                port->dev_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
                        else
                                port->dev_conf.rxmode.mq_mode = ETH_MQ_RX_NONE;        
                }

                port->rx_conf.rx_thresh = rx_thresh;
                port->rx_conf.rx_free_thresh = rx_free_thresh;
                port->rx_conf.rx_drop_en = rx_drop_en;
                port->tx_conf.tx_thresh = tx_thresh;
                port->tx_conf.tx_rs_thresh = tx_rs_thresh;
                port->tx_conf.tx_free_thresh = tx_free_thresh;
                port->tx_conf.txq_flags = txq_flags;

                rte_eth_macaddr_get(pid, &port->eth_addr);

                map_port_queue_stats_mapping_registers(pid, port);
#ifdef RTE_NIC_BYPASS
                rte_eth_dev_bypass_init(pid);
#endif
        }
}

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
};

static  int
get_eth_dcb_conf(struct rte_eth_conf *eth_conf, struct dcb_config *dcb_conf)
{
        uint8_t i;
 
        /*
         * Builds up the correct configuration for dcb+vt based on the vlan tags array
         * given above, and the number of traffic classes available for use.
         */
        if (dcb_conf->dcb_mode == DCB_VT_ENABLED) {
                struct rte_eth_vmdq_dcb_conf vmdq_rx_conf;
                struct rte_eth_vmdq_dcb_tx_conf vmdq_tx_conf;
 
                /* VMDQ+DCB RX and TX configrations */
                vmdq_rx_conf.enable_default_pool = 0;
                vmdq_rx_conf.default_pool = 0;
                vmdq_rx_conf.nb_queue_pools =
                        (dcb_conf->num_tcs ==  ETH_4_TCS ? ETH_32_POOLS : ETH_16_POOLS);
                vmdq_tx_conf.nb_queue_pools =
                        (dcb_conf->num_tcs ==  ETH_4_TCS ? ETH_32_POOLS : ETH_16_POOLS);
 
                vmdq_rx_conf.nb_pool_maps = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
                for (i = 0; i < vmdq_rx_conf.nb_pool_maps; i++) {
                        vmdq_rx_conf.pool_map[i].vlan_id = vlan_tags[ i ];
                        vmdq_rx_conf.pool_map[i].pools = 1 << (i % vmdq_rx_conf.nb_queue_pools);
                }
                for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) {
                        vmdq_rx_conf.dcb_queue[i] = i;
                        vmdq_tx_conf.dcb_queue[i] = i;
                }
 
                /*set DCB mode of RX and TX of multiple queues*/
                eth_conf->rxmode.mq_mode = ETH_MQ_RX_VMDQ_DCB;
                eth_conf->txmode.mq_mode = ETH_MQ_TX_VMDQ_DCB;
                if (dcb_conf->pfc_en)
                        eth_conf->dcb_capability_en = ETH_DCB_PG_SUPPORT|ETH_DCB_PFC_SUPPORT;
                else
                        eth_conf->dcb_capability_en = ETH_DCB_PG_SUPPORT;
 
                (void)(rte_memcpy(&eth_conf->rx_adv_conf.vmdq_dcb_conf, &vmdq_rx_conf,
                                sizeof(struct rte_eth_vmdq_dcb_conf)));
                (void)(rte_memcpy(&eth_conf->tx_adv_conf.vmdq_dcb_tx_conf, &vmdq_tx_conf,
                                sizeof(struct rte_eth_vmdq_dcb_tx_conf)));
        }
        else {
                struct rte_eth_dcb_rx_conf rx_conf;
                struct rte_eth_dcb_tx_conf tx_conf;
 
                /* queue mapping configuration of DCB RX and TX */
                if (dcb_conf->num_tcs == ETH_4_TCS)
                        dcb_q_mapping = DCB_4_TCS_Q_MAPPING;
                else
                        dcb_q_mapping = DCB_8_TCS_Q_MAPPING;
 
                rx_conf.nb_tcs = dcb_conf->num_tcs;
                tx_conf.nb_tcs = dcb_conf->num_tcs;
 
                for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++){
                        rx_conf.dcb_queue[i] = i;
                        tx_conf.dcb_queue[i] = i;
                }
                eth_conf->rxmode.mq_mode = ETH_MQ_RX_DCB;
                eth_conf->txmode.mq_mode = ETH_MQ_TX_DCB;
                if (dcb_conf->pfc_en)
                        eth_conf->dcb_capability_en = ETH_DCB_PG_SUPPORT|ETH_DCB_PFC_SUPPORT;
                else
                        eth_conf->dcb_capability_en = ETH_DCB_PG_SUPPORT;
                 
                (void)(rte_memcpy(&eth_conf->rx_adv_conf.dcb_rx_conf, &rx_conf,
                                sizeof(struct rte_eth_dcb_rx_conf)));
                (void)(rte_memcpy(&eth_conf->tx_adv_conf.dcb_tx_conf, &tx_conf,
                                sizeof(struct rte_eth_dcb_tx_conf)));
        }

        return 0;
}

int
init_port_dcb_config(portid_t pid,struct dcb_config *dcb_conf)
{
        struct rte_eth_conf port_conf;
        struct rte_port *rte_port;
        int retval;
        uint16_t nb_vlan;
        uint16_t i;
 
        /* rxq and txq configuration in dcb mode */
        nb_rxq = 128;
        nb_txq = 128;
        rx_free_thresh = 64;
 
        memset(&port_conf,0,sizeof(struct rte_eth_conf));
        /* Enter DCB configuration status */
        dcb_config = 1;
 
        nb_vlan = sizeof( vlan_tags )/sizeof( vlan_tags[ 0 ]);
        /*set configuration of DCB in vt mode and DCB in non-vt mode*/
        retval = get_eth_dcb_conf(&port_conf, dcb_conf);
        if (retval < 0)
                return retval;
 
        rte_port = &ports[pid];
        memcpy(&rte_port->dev_conf, &port_conf,sizeof(struct rte_eth_conf));
 
        rte_port->rx_conf.rx_thresh = rx_thresh;
        rte_port->rx_conf.rx_free_thresh = rx_free_thresh;
        rte_port->tx_conf.tx_thresh = tx_thresh;
        rte_port->tx_conf.tx_rs_thresh = tx_rs_thresh;
        rte_port->tx_conf.tx_free_thresh = tx_free_thresh;
        /* VLAN filter */
        rte_port->dev_conf.rxmode.hw_vlan_filter = 1;
        for (i = 0; i < nb_vlan; i++){
                rx_vft_set(pid, vlan_tags[i], 1);
        }
 
        rte_eth_macaddr_get(pid, &rte_port->eth_addr);
        map_port_queue_stats_mapping_registers(pid, rte_port);

        rte_port->dcb_flag = 1;
 
        return 0;
}

#ifdef RTE_EXEC_ENV_BAREMETAL
#define main _main
#endif

int
main(int argc, char** argv)
{
        int  diag;
        uint8_t port_id;

        diag = rte_eal_init(argc, argv);
        if (diag < 0)
                rte_panic("Cannot init EAL\n");

        if (rte_pmd_init_all())
                rte_panic("Cannot init PMD\n");

        if (rte_eal_pci_probe())
                rte_panic("Cannot probe PCI\n");

        nb_ports = (portid_t) rte_eth_dev_count();
        if (nb_ports == 0)
                rte_exit(EXIT_FAILURE, "No probed ethernet devices - "
                                                        "check that "
                          "CONFIG_RTE_LIBRTE_IGB_PMD=y and that "
                          "CONFIG_RTE_LIBRTE_EM_PMD=y and that "
                          "CONFIG_RTE_LIBRTE_IXGBE_PMD=y in your "
                          "configuration file\n");

        set_def_fwd_config();
        if (nb_lcores == 0)
                rte_panic("Empty set of forwarding logical cores - check the "
                          "core mask supplied in the command parameters\n");

        argc -= diag;
        argv += diag;
        if (argc > 1)
                launch_args_parse(argc, argv);

        if (nb_rxq > nb_txq)
                printf("Warning: nb_rxq=%d enables RSS configuration, "
                       "but nb_txq=%d will prevent to fully test it.\n",
                       nb_rxq, nb_txq);

        init_config();
        if (start_port(RTE_PORT_ALL) != 0)
                rte_exit(EXIT_FAILURE, "Start ports failed\n");

        /* set all ports to promiscuous mode by default */
        for (port_id = 0; port_id < nb_ports; port_id++)
                rte_eth_promiscuous_enable(port_id);

#ifdef RTE_LIBRTE_CMDLINE
        if (interactive == 1) {
                if (auto_start) {
                        printf("Start automatic packet forwarding\n");
                        start_packet_forwarding(0);
                }
                prompt();
        } else
#endif
        {
                char c;
                int rc;

                printf("No commandline core given, start packet forwarding\n");
                start_packet_forwarding(0);
                printf("Press enter to exit\n");
                rc = read(0, &c, 1);
                if (rc < 0)
                        return 1;
        }

        return 0;
}