examples/l3fwd-vf/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <errno.h>
#include <getopt.h>
#include <signal.h>

#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_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_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>

#define APP_LOOKUP_EXACT_MATCH          0
#define APP_LOOKUP_LPM                  1
#define DO_RFC_1812_CHECKS

//#define APP_LOOKUP_METHOD             APP_LOOKUP_EXACT_MATCH
#ifndef APP_LOOKUP_METHOD
#define APP_LOOKUP_METHOD             APP_LOOKUP_LPM
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
#include <rte_hash.h>
#elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
#include <rte_lpm.h>
#else
#error "APP_LOOKUP_METHOD set to incorrect value"
#endif

#define RTE_LOGTYPE_L3FWD RTE_LOGTYPE_USER1

#define MEMPOOL_CACHE_SIZE 256

/*
 * This expression is used to calculate the number of mbufs needed depending on user input, taking
 *  into account memory for rx and tx hardware rings, cache per lcore and mtable per port per lcore.
 *  RTE_MAX is used to ensure that NB_MBUF never goes below a minimum value of 8192
 */

#define NB_MBUF RTE_MAX (                       \
                (nb_ports*nb_rx_queue*nb_rxd +      \
                nb_ports*nb_lcores*MAX_PKT_BURST +  \
                nb_ports*n_tx_queue*nb_txd +        \
                nb_lcores*MEMPOOL_CACHE_SIZE),      \
                (unsigned)8192)

/*
 * RX and TX Prefetch, Host, and Write-back threshold values should be
 * carefully set for optimal performance. Consult the network
 * controller's datasheet and supporting DPDK documentation for guidance
 * on how these parameters should be set.
 */
#define RX_PTHRESH 8 
#define RX_HTHRESH 8 
#define RX_WTHRESH 4 
/*
 * These default values are optimized for use with the Intel(R) 82599 10 GbE
 * Controller and the DPDK ixgbe PMD. Consider using other values for other
 * network controllers and/or network drivers.
 */
#define TX_PTHRESH 36 
#define TX_HTHRESH 0  
#define TX_WTHRESH 0  
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */

#define NB_SOCKETS 8

#define SOCKET0 0

/* Configure how many packets ahead to prefetch, when reading packets */
#define PREFETCH_OFFSET 3

/*
 * Configurable number of RX/TX ring descriptors
 */
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024
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 rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];

/* mask of enabled ports */
static uint32_t enabled_port_mask = 0;
static int numa_on = 1; 
struct mbuf_table {
    uint16_t len;
    struct rte_mbuf *m_table[MAX_PKT_BURST];
};

struct lcore_rx_queue {
    uint16_t port_id;
    uint8_t queue_id;
} __rte_cache_aligned;

#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 1
#define MAX_RX_QUEUE_PER_PORT 1

#define MAX_LCORE_PARAMS 1024
struct lcore_params {
    uint16_t port_id;
    uint8_t queue_id;
    uint8_t lcore_id;
} __rte_cache_aligned;

static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
static struct lcore_params lcore_params_array_default[] = {
    {0, 0, 2},
    {0, 1, 2},
    {0, 2, 2},
    {1, 0, 2},
    {1, 1, 2},
    {1, 2, 2},
    {2, 0, 2},
    {3, 0, 3},
    {3, 1, 3},
};

static struct lcore_params * lcore_params = lcore_params_array_default;
static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
                sizeof(lcore_params_array_default[0]);

static struct rte_eth_conf port_conf = {
    .rxmode = {
        .mq_mode    = ETH_MQ_RX_RSS,
        .max_rx_pkt_len = RTE_ETHER_MAX_LEN,
        .split_hdr_size = 0,
        .offloads = DEV_RX_OFFLOAD_CHECKSUM,
    },
    .rx_adv_conf = {
        .rss_conf = {
            .rss_key = NULL,
            .rss_hf = ETH_RSS_IP,
        },
    },
    .txmode = {
        .mq_mode = ETH_MQ_TX_NONE,
    },
};

static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];


#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)

#ifdef RTE_ARCH_X86
#include <rte_hash_crc.h>
#define DEFAULT_HASH_FUNC       rte_hash_crc
#else
#include <rte_jhash.h>
#define DEFAULT_HASH_FUNC       rte_jhash
#endif

struct ipv4_5tuple {
    uint32_t ip_dst;
    uint32_t ip_src;
    uint16_t port_dst;
    uint16_t port_src;
    uint8_t proto;
} __attribute__((__packed__));

struct l3fwd_route {
    struct ipv4_5tuple key;
    uint8_t if_out;
};

static struct l3fwd_route l3fwd_route_array[] = {
    {{RTE_IPV4(100,10,0,1), RTE_IPV4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
    {{RTE_IPV4(100,20,0,2), RTE_IPV4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
    {{RTE_IPV4(100,30,0,3), RTE_IPV4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
    {{RTE_IPV4(100,40,0,4), RTE_IPV4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
};

typedef struct rte_hash lookup_struct_t;
static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];

#define L3FWD_HASH_ENTRIES  1024
struct rte_hash_parameters l3fwd_hash_params = {
    .name = "l3fwd_hash_0",
    .entries = L3FWD_HASH_ENTRIES,
    .key_len = sizeof(struct ipv4_5tuple),
    .hash_func = DEFAULT_HASH_FUNC,
    .hash_func_init_val = 0,
    .socket_id = SOCKET0,
};

#define L3FWD_NUM_ROUTES \
    (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))

static uint8_t l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
struct l3fwd_route {
    uint32_t ip;
    uint8_t  depth;
    uint8_t  if_out;
};

static struct l3fwd_route l3fwd_route_array[] = {
    {RTE_IPV4(1,1,1,0), 24, 0},
    {RTE_IPV4(2,1,1,0), 24, 1},
    {RTE_IPV4(3,1,1,0), 24, 2},
    {RTE_IPV4(4,1,1,0), 24, 3},
    {RTE_IPV4(5,1,1,0), 24, 4},
    {RTE_IPV4(6,1,1,0), 24, 5},
    {RTE_IPV4(7,1,1,0), 24, 6},
    {RTE_IPV4(8,1,1,0), 24, 7},
};

#define L3FWD_NUM_ROUTES \
    (sizeof(l3fwd_route_array) / sizeof(l3fwd_route_array[0]))

#define L3FWD_LPM_MAX_RULES     1024

typedef struct rte_lpm lookup_struct_t;
static lookup_struct_t *l3fwd_lookup_struct[NB_SOCKETS];
#endif

struct lcore_conf {
    uint16_t n_rx_queue;
    struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
    uint16_t tx_queue_id;
    struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
    lookup_struct_t * lookup_struct;
} __rte_cache_aligned;

static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS] = {RTE_SPINLOCK_INITIALIZER};
/* Send burst of packets on an output interface */
static inline int
send_burst(struct lcore_conf *qconf, uint16_t n, uint16_t port)
{
    struct rte_mbuf **m_table;
    int ret;
    uint16_t queueid;

    queueid = qconf->tx_queue_id;
    m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;

    rte_spinlock_lock(&spinlock_conf[port]);
    ret = rte_eth_tx_burst(port, queueid, m_table, n);
    rte_spinlock_unlock(&spinlock_conf[port]);

    if (unlikely(ret < n)) {
        do {
            rte_pktmbuf_free(m_table[ret]);
        } while (++ret < n);
    }

    return 0;
}

/* Enqueue a single packet, and send burst if queue is filled */
static inline int
send_single_packet(struct rte_mbuf *m, uint16_t port)
{
    uint32_t lcore_id;
    uint16_t len;
    struct lcore_conf *qconf;

    lcore_id = rte_lcore_id();

    qconf = &lcore_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)) {
        send_burst(qconf, MAX_PKT_BURST, port);
        len = 0;
    }

    qconf->tx_mbufs[port].len = len;
    return 0;
}

#ifdef DO_RFC_1812_CHECKS
static inline int
is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len)
{
    /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
    /*
     * 1. The packet length reported by the Link Layer must be large
     * enough to hold the minimum length legal IP datagram (20 bytes).
     */
    if (link_len < sizeof(struct rte_ipv4_hdr))
        return -1;

    /* 2. The IP checksum must be correct. */
    /* this is checked in H/W */

    /*
     * 3. The IP version number must be 4. If the version number is not 4
     * then the packet may be another version of IP, such as IPng or
     * ST-II.
     */
    if (((pkt->version_ihl) >> 4) != 4)
        return -3;
    /*
     * 4. The IP header length field must be large enough to hold the
     * minimum length legal IP datagram (20 bytes = 5 words).
     */
    if ((pkt->version_ihl & 0xf) < 5)
        return -4;

    /*
     * 5. The IP total length field must be large enough to hold the IP
     * datagram header, whose length is specified in the IP header length
     * field.
     */
    if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct rte_ipv4_hdr))
        return -5;

    return 0;
}
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
print_key(struct ipv4_5tuple key)
{
    printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, proto = %d\n",
           (unsigned)key.ip_dst, (unsigned)key.ip_src, key.port_dst, key.port_src, key.proto);
}

static inline uint16_t
get_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
          lookup_struct_t *l3fwd_lookup_struct)
{
    struct ipv4_5tuple key;
    struct rte_tcp_hdr *tcp;
    struct rte_udp_hdr *udp;
    int ret = 0;

    key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
    key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
    key.proto = ipv4_hdr->next_proto_id;

    switch (ipv4_hdr->next_proto_id) {
    case IPPROTO_TCP:
        tcp = (struct rte_tcp_hdr *)((unsigned char *) ipv4_hdr +
                    sizeof(struct rte_ipv4_hdr));
        key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
        key.port_src = rte_be_to_cpu_16(tcp->src_port);
        break;

    case IPPROTO_UDP:
        udp = (struct rte_udp_hdr *)((unsigned char *) ipv4_hdr +
                    sizeof(struct rte_ipv4_hdr));
        key.port_dst = rte_be_to_cpu_16(udp->dst_port);
        key.port_src = rte_be_to_cpu_16(udp->src_port);
        break;

    default:
        key.port_dst = 0;
        key.port_src = 0;
    }

    /* Find destination port */
    ret = rte_hash_lookup(l3fwd_lookup_struct, (const void *)&key);
    return ((ret < 0) ? portid : l3fwd_out_if[ret]);
}
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static inline uint32_t
get_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
          lookup_struct_t *l3fwd_lookup_struct)
{
    uint32_t next_hop;

    return ((rte_lpm_lookup(l3fwd_lookup_struct,
        rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0) ?
        next_hop : portid);
}
#endif

static inline void
l3fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
              lookup_struct_t *l3fwd_lookup_struct)
{
    struct rte_ether_hdr *eth_hdr;
    struct rte_ipv4_hdr *ipv4_hdr;
    void *tmp;
    uint16_t dst_port;

    eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);

    ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
                       sizeof(struct rte_ether_hdr));

#ifdef DO_RFC_1812_CHECKS
    /* Check to make sure the packet is valid (RFC1812) */
    if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
        rte_pktmbuf_free(m);
        return;
    }
#endif

    dst_port = get_dst_port(ipv4_hdr, portid, l3fwd_lookup_struct);
    if (dst_port >= RTE_MAX_ETHPORTS || (enabled_port_mask & 1 << dst_port) == 0)
        dst_port = portid;

    /* 02:00:00:00:00:xx */
    tmp = &eth_hdr->d_addr.addr_bytes[0];
    *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);

#ifdef DO_RFC_1812_CHECKS
    /* Update time to live and header checksum */
    --(ipv4_hdr->time_to_live);
    ++(ipv4_hdr->hdr_checksum);
#endif

    /* src addr */
    rte_ether_addr_copy(&ports_eth_addr[dst_port], &eth_hdr->s_addr);

    send_single_packet(m, dst_port);

}

/* main processing loop */
static int
main_loop(__attribute__((unused)) void *dummy)
{
    struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
    unsigned lcore_id;
    uint64_t prev_tsc, diff_tsc, cur_tsc;
    int i, j, nb_rx;
    uint8_t queueid;
    uint16_t portid;
    struct lcore_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_conf[lcore_id];

    if (qconf->n_rx_queue == 0) {
        RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
        return 0;
    }

    RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);

    for (i = 0; i < qconf->n_rx_queue; i++) {

        portid = qconf->rx_queue_list[i].port_id;
        queueid = qconf->rx_queue_list[i].queue_id;
        RTE_LOG(INFO, L3FWD, " --lcoreid=%u portid=%u rxqueueid=%hhu\n",
        lcore_id, portid, queueid);
    }

    while (1) {

        cur_tsc = rte_rdtsc();

        /*
         * TX burst queue drain
         */
        diff_tsc = cur_tsc - prev_tsc;
        if (unlikely(diff_tsc > drain_tsc)) {

            /*
             * This could be optimized (use queueid instead of
             * portid), but it is not called so often
             */
            for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
                if (qconf->tx_mbufs[portid].len == 0)
                    continue;
                send_burst(&lcore_conf[lcore_id],
                    qconf->tx_mbufs[portid].len,
                    portid);
                qconf->tx_mbufs[portid].len = 0;
            }

            prev_tsc = cur_tsc;
        }

        /*
         * Read packet from RX queues
         */
        for (i = 0; i < qconf->n_rx_queue; ++i) {

            portid = qconf->rx_queue_list[i].port_id;
            queueid = qconf->rx_queue_list[i].queue_id;
            nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, MAX_PKT_BURST);

            /* Prefetch first packets */
            for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
                rte_prefetch0(rte_pktmbuf_mtod(
                        pkts_burst[j], void *));
            }

            /* Prefetch and forward already prefetched packets */
            for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
                rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
                        j + PREFETCH_OFFSET], void *));
                l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
            }

            /* Forward remaining prefetched packets */
            for (; j < nb_rx; j++) {
                l3fwd_simple_forward(pkts_burst[j], portid, qconf->lookup_struct);
            }
        }
    }
}

static int
check_lcore_params(void)
{
    uint8_t queue, lcore;
    uint16_t i;
    int socketid;

    for (i = 0; i < nb_lcore_params; ++i) {
        queue = lcore_params[i].queue_id;
        if (queue >= MAX_RX_QUEUE_PER_PORT) {
            printf("invalid queue number: %hhu\n", queue);
            return -1;
        }
        lcore = lcore_params[i].lcore_id;
        if (!rte_lcore_is_enabled(lcore)) {
            printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
            return -1;
        }
        if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
            (numa_on == 0)) {
            printf("warning: lcore %hhu is on socket %d with numa off \n",
                lcore, socketid);
        }
    }
    return 0;
}

static int
check_port_config(void)
{
    unsigned portid;
    uint16_t i;

    for (i = 0; i < nb_lcore_params; ++i) {
        portid = lcore_params[i].port_id;
        if ((enabled_port_mask & (1 << portid)) == 0) {
            printf("port %u is not enabled in port mask\n", portid);
            return -1;
        }
        if (!rte_eth_dev_is_valid_port(portid)) {
            printf("port %u is not present on the board\n", portid);
            return -1;
        }
    }
    return 0;
}

static uint8_t
get_port_n_rx_queues(const uint16_t port)
{
    int queue = -1;
    uint16_t i;

    for (i = 0; i < nb_lcore_params; ++i) {
        if (lcore_params[i].port_id == port && lcore_params[i].queue_id > queue)
            queue = lcore_params[i].queue_id;
    }
    return (uint8_t)(++queue);
}

static int
init_lcore_rx_queues(void)
{
    uint16_t i, nb_rx_queue;
    uint8_t lcore;

    for (i = 0; i < nb_lcore_params; ++i) {
        lcore = lcore_params[i].lcore_id;
        nb_rx_queue = lcore_conf[lcore].n_rx_queue;
        if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
            printf("error: too many queues (%u) for lcore: %u\n",
                (unsigned)nb_rx_queue + 1, (unsigned)lcore);
            return -1;
        } else {
            lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
                lcore_params[i].port_id;
            lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
                lcore_params[i].queue_id;
            lcore_conf[lcore].n_rx_queue++;
        }
    }
    return 0;
}

/* display usage */
static void
print_usage(const char *prgname)
{
    printf ("%s [EAL options] -- -p PORTMASK"
        "  [--config (port,queue,lcore)[,(port,queue,lcore]]\n"
        "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
        "  --config (port,queue,lcore): rx queues configuration\n"
        "  --no-numa: optional, disable numa awareness\n",
        prgname);
}

/* Custom handling of signals to handle process terminal */
static void
signal_handler(int signum)
{
    uint16_t portid;

    /* When we receive a SIGINT signal */
    if (signum == SIGINT) {
        RTE_ETH_FOREACH_DEV(portid) {
            /* skip ports that are not enabled */
            if ((enabled_port_mask & (1 << portid)) == 0)
                continue;
            rte_eth_dev_close(portid);
        }
    }
    rte_exit(EXIT_SUCCESS, "\n User forced exit\n");
}
static int
parse_portmask(const char *portmask)
{
    char *end = NULL;
    unsigned long pm;

    /* parse hexadecimal string */
    pm = strtoul(portmask, &end, 16);
    if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
        return -1;

    if (pm == 0)
        return -1;

    return pm;
}

static int
parse_config(const char *q_arg)
{
    char s[256];
    const char *p, *p0 = q_arg;
    char *end;
    enum fieldnames {
        FLD_PORT = 0,
        FLD_QUEUE,
        FLD_LCORE,
        _NUM_FLD
    };
    unsigned long int_fld[_NUM_FLD];
    char *str_fld[_NUM_FLD];
    int i;
    unsigned size;

    nb_lcore_params = 0;

    while ((p = strchr(p0,'(')) != NULL) {
        ++p;
        if((p0 = strchr(p,')')) == NULL)
            return -1;

        size = p0 - p;
        if(size >= sizeof(s))
            return -1;

        snprintf(s, sizeof(s), "%.*s", size, p);
        if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
            return -1;
        for (i = 0; i < _NUM_FLD; i++){
            errno = 0;
            int_fld[i] = strtoul(str_fld[i], &end, 0);
            if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
                return -1;
        }
        if (nb_lcore_params >= MAX_LCORE_PARAMS) {
            printf("exceeded max number of lcore params: %hu\n",
                nb_lcore_params);
            return -1;
        }
        lcore_params_array[nb_lcore_params].port_id = int_fld[FLD_PORT];
        lcore_params_array[nb_lcore_params].queue_id = (uint8_t)int_fld[FLD_QUEUE];
        lcore_params_array[nb_lcore_params].lcore_id = (uint8_t)int_fld[FLD_LCORE];
        ++nb_lcore_params;
    }
    lcore_params = lcore_params_array;
    return 0;
}

/* Parse the argument given in the command line of the application */
static int
parse_args(int argc, char **argv)
{
    int opt, ret;
    char **argvopt;
    int option_index;
    char *prgname = argv[0];
    static struct option lgopts[] = {
        {"config", 1, 0, 0},
        {"no-numa", 0, 0, 0},
        {NULL, 0, 0, 0}
    };

    argvopt = argv;

    while ((opt = getopt_long(argc, argvopt, "p:",
                lgopts, &option_index)) != EOF) {

        switch (opt) {
        /* portmask */
        case 'p':
            enabled_port_mask = parse_portmask(optarg);
            if (enabled_port_mask == 0) {
                printf("invalid portmask\n");
                print_usage(prgname);
                return -1;
            }
            break;

        /* long options */
        case 0:
            if (!strcmp(lgopts[option_index].name, "config")) {
                ret = parse_config(optarg);
                if (ret) {
                    printf("invalid config\n");
                    print_usage(prgname);
                    return -1;
                }
            }

            if (!strcmp(lgopts[option_index].name, "no-numa")) {
                printf("numa is disabled \n");
                numa_on = 0;
            }
            break;

        default:
            print_usage(prgname);
            return -1;
        }
    }

    if (optind >= 0)
        argv[optind-1] = prgname;

    ret = optind-1;
    optind = 1; /* reset getopt lib */
    return ret;
}

static void
print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
{
    char buf[RTE_ETHER_ADDR_FMT_SIZE];
    rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
    printf("%s%s", name, buf);
}

#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
setup_hash(int socketid)
{
    unsigned i;
    int ret;
    char s[64];

    /* create  hashes */
    snprintf(s, sizeof(s), "l3fwd_hash_%d", socketid);
    l3fwd_hash_params.name = s;
    l3fwd_hash_params.socket_id = socketid;
    l3fwd_lookup_struct[socketid] = rte_hash_create(&l3fwd_hash_params);
    if (l3fwd_lookup_struct[socketid] == NULL)
        rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
                "socket %d\n", socketid);

    /* populate the hash */
    for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
        ret = rte_hash_add_key (l3fwd_lookup_struct[socketid],
                (void *) &l3fwd_route_array[i].key);
        if (ret < 0) {
            rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
                "l3fwd hash on socket %d\n", i, socketid);
        }
        l3fwd_out_if[ret] = l3fwd_route_array[i].if_out;
        printf("Hash: Adding key\n");
        print_key(l3fwd_route_array[i].key);
    }
}
#endif

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static void
setup_lpm(int socketid)
{
    unsigned i;
    int ret;
    char s[64];

    struct rte_lpm_config lpm_ipv4_config;

    lpm_ipv4_config.max_rules = L3FWD_LPM_MAX_RULES;
    lpm_ipv4_config.number_tbl8s = 256;
    lpm_ipv4_config.flags = 0;

    /* create the LPM table */
    snprintf(s, sizeof(s), "L3FWD_LPM_%d", socketid);
    l3fwd_lookup_struct[socketid] =
            rte_lpm_create(s, socketid, &lpm_ipv4_config);
    if (l3fwd_lookup_struct[socketid] == NULL)
        rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
                " on socket %d\n", socketid);

    /* populate the LPM table */
    for (i = 0; i < L3FWD_NUM_ROUTES; i++) {
        ret = rte_lpm_add(l3fwd_lookup_struct[socketid],
            l3fwd_route_array[i].ip,
            l3fwd_route_array[i].depth,
            l3fwd_route_array[i].if_out);

        if (ret < 0) {
            rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
                "l3fwd LPM table on socket %d\n",
                i, socketid);
        }

        printf("LPM: Adding route 0x%08x / %d (%d)\n",
            (unsigned)l3fwd_route_array[i].ip,
            l3fwd_route_array[i].depth,
            l3fwd_route_array[i].if_out);
    }
}
#endif

static int
init_mem(unsigned nb_mbuf)
{
    struct lcore_conf *qconf;
    int socketid;
    unsigned lcore_id;
    char s[64];

    for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
        if (rte_lcore_is_enabled(lcore_id) == 0)
            continue;

        if (numa_on)
            socketid = rte_lcore_to_socket_id(lcore_id);
        else
            socketid = 0;

        if (socketid >= NB_SOCKETS) {
            rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is out of range %d\n",
                socketid, lcore_id, NB_SOCKETS);
        }
        if (pktmbuf_pool[socketid] == NULL) {
            snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
            pktmbuf_pool[socketid] = rte_pktmbuf_pool_create(s,
                nb_mbuf, MEMPOOL_CACHE_SIZE, 0,
                RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
            if (pktmbuf_pool[socketid] == NULL)
                rte_exit(EXIT_FAILURE, "Cannot init mbuf pool on socket %d\n", socketid);
            else
                printf("Allocated mbuf pool on socket %d\n", socketid);

#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
            setup_lpm(socketid);
#else
            setup_hash(socketid);
#endif
        }
        qconf = &lcore_conf[lcore_id];
        qconf->lookup_struct = l3fwd_lookup_struct[socketid];
    }
    return 0;
}

int
main(int argc, char **argv)
{
    struct lcore_conf *qconf;
    struct rte_eth_dev_info dev_info;
    struct rte_eth_txconf *txconf;
    int ret;
    unsigned nb_ports;
    uint16_t queueid, portid;
    unsigned lcore_id;
    uint32_t nb_lcores;
    uint16_t n_tx_queue;
    uint8_t nb_rx_queue, queue, socketid;

    signal(SIGINT, signal_handler);
    /* init EAL */
    ret = rte_eal_init(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
    argc -= ret;
    argv += ret;

    /* parse application arguments (after the EAL ones) */
    ret = parse_args(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid L3FWD-VF parameters\n");

    if (check_lcore_params() < 0)
        rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");

    ret = init_lcore_rx_queues();
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");

    nb_ports = rte_eth_dev_count_avail();

    if (check_port_config() < 0)
        rte_exit(EXIT_FAILURE, "check_port_config failed\n");

    nb_lcores = rte_lcore_count();

    /* initialize all ports */
    RTE_ETH_FOREACH_DEV(portid) {
        struct rte_eth_conf local_port_conf = port_conf;

        /* skip ports that are not enabled */
        if ((enabled_port_mask & (1 << portid)) == 0) {
            printf("\nSkipping disabled port %d\n", portid);
            continue;
        }

        /* init port */
        printf("Initializing port %d ... ", portid );
        fflush(stdout);

        /* must always equal(=1) */
        nb_rx_queue = get_port_n_rx_queues(portid);
        n_tx_queue = MAX_TX_QUEUE_PER_PORT;

        printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
            nb_rx_queue, (unsigned)1 );

        rte_eth_dev_info_get(portid, &dev_info);
        if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
            local_port_conf.txmode.offloads |=
                DEV_TX_OFFLOAD_MBUF_FAST_FREE;

        local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
            dev_info.flow_type_rss_offloads;
        if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
                port_conf.rx_adv_conf.rss_conf.rss_hf) {
            printf("Port %u modified RSS hash function based on hardware support,"
                "requested:%#"PRIx64" configured:%#"PRIx64"\n",
                portid,
                port_conf.rx_adv_conf.rss_conf.rss_hf,
                local_port_conf.rx_adv_conf.rss_conf.rss_hf);
        }

        ret = rte_eth_dev_configure(portid, nb_rx_queue,
                        n_tx_queue, &local_port_conf);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%d\n",
                ret, portid);

        ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
                               &nb_txd);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
                 "Cannot adjust number of descriptors: err=%d, port=%d\n",
                 ret, portid);

        rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
        print_ethaddr(" Address:", &ports_eth_addr[portid]);
        printf(", ");

        ret = init_mem(NB_MBUF);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "init_mem failed\n");

        /* init one TX queue */
        socketid = (uint8_t)rte_lcore_to_socket_id(rte_get_master_lcore());

        printf("txq=%d,%d,%d ", portid, 0, socketid);
        fflush(stdout);

        txconf = &dev_info.default_txconf;
        txconf->offloads = local_port_conf.txmode.offloads;
        ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
                         socketid, txconf);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
                "port=%d\n", ret, portid);

        printf("\n");
    }

    for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
        struct rte_eth_rxconf rxq_conf;

        if (rte_lcore_is_enabled(lcore_id) == 0)
            continue;
        qconf = &lcore_conf[lcore_id];
        qconf->tx_queue_id = 0;

        printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
        fflush(stdout);
        /* init RX queues */
        for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
            struct rte_eth_dev *dev;
            struct rte_eth_conf *conf;

            portid = qconf->rx_queue_list[queue].port_id;
            queueid = qconf->rx_queue_list[queue].queue_id;
            dev = &rte_eth_devices[portid];
            conf = &dev->data->dev_conf;

            if (numa_on)
                socketid = (uint8_t)rte_lcore_to_socket_id(lcore_id);
            else
                socketid = 0;

            printf("rxq=%d,%d,%d ", portid, queueid, socketid);
            fflush(stdout);

            rte_eth_dev_info_get(portid, &dev_info);
            rxq_conf = dev_info.default_rxconf;
            rxq_conf.offloads = conf->rxmode.offloads;
            ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
                        socketid, &rxq_conf,
                        pktmbuf_pool[socketid]);
            if (ret < 0)
                rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
                        "port=%d\n", ret, portid);
        }
    }
    printf("\n");

    /* start ports */
    RTE_ETH_FOREACH_DEV(portid) {
        if ((enabled_port_mask & (1 << portid)) == 0) {
            continue;
        }
        /* Start device */
        ret = rte_eth_dev_start(portid);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, port=%d\n",
                ret, portid);

        printf("done: Port %d\n", portid);

    }

    /* launch per-lcore init on every lcore */
    rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
    RTE_LCORE_FOREACH_SLAVE(lcore_id) {
        if (rte_eal_wait_lcore(lcore_id) < 0)
            return -1;
    }

    return 0;
}