odp_l3fwd.c

L3 forwarding example application

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2016-2018 Linaro Limited
 */
 
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <getopt.h>
#include <unistd.h>
#include <inttypes.h>
 
#include <odp_api.h>
#include <odp/helper/odph_api.h>
 
#include "odp_l3fwd_db.h"
#include "odp_l3fwd_lpm.h"
 
#define POOL_NUM_PKT    8192
#define POOL_SEG_LEN    1856
#define MAX_PKT_BURST   32
 
#define MAX_NB_WORKER   (ODP_THREAD_COUNT_MAX - 1)
#define MAX_NB_PKTIO    32
#define MAX_NB_QUEUE    32
#define MAX_NB_QCONFS   1024
#define MAX_NB_ROUTE    32
 
#define INVALID_ID  (-1)
#define PRINT_INTERVAL  1   /* interval seconds of printing stats */
 
#define NO_PATH(file_name) (strrchr((file_name), '/') ? \
                strrchr((file_name), '/') + 1 : (file_name))
 
struct l3fwd_pktio_s {
    odp_pktio_t pktio;
    odph_ethaddr_t mac_addr;
    odp_pktin_queue_t ifin[MAX_NB_QUEUE];
    odp_pktout_queue_t ifout[MAX_NB_QUEUE];
    int nb_rxq; /* capa max */
    int nb_txq; /* capa max */
    int rxq_idx;    /* requested, maybe greater than nb_rxq */
    int txq_idx;    /* requested, maybe greater than nb_txq */
};
 
struct l3fwd_qconf_s {
    uint8_t if_idx;     /* port index */
    uint8_t rxq_idx;    /* recv queue index in a port */
    uint8_t core_idx;   /* this core should handle traffic */
};
 
struct thread_arg_s {
    uint64_t packets;
    uint64_t rx_drops;
    uint64_t tx_drops;
    struct {
        int if_idx; /* interface index */
        int nb_rxq; /* number of rxq this thread will access */
        int rxq[MAX_NB_QUEUE];  /* rxq[i] is index in pktio.ifin[] */
        int txq_idx;    /* index in pktio.ifout[] */
    } pktio[MAX_NB_PKTIO];
    int nb_pktio;
    int thr_idx;
};
 
typedef struct {
    char *if_names_buf;           /* memory buffer for all if_names */
    char *if_names[MAX_NB_PKTIO]; /* pointers to name strings stored in if_names_buf */
    int if_count;
    char *route_str[MAX_NB_ROUTE];
    unsigned int worker_count;
    struct l3fwd_qconf_s qconf_config[MAX_NB_QCONFS];
    unsigned int qconf_count;
    uint32_t duration; /* seconds to run */
    uint8_t hash_mode; /* 1:hash, 0:lpm */
    uint8_t dest_mac_changed[MAX_NB_PKTIO]; /* 1: dest mac from cmdline */
    int error_check; /* Check packets for errors */
} app_args_t;
 
typedef struct {
    app_args_t      cmd_args;
    struct l3fwd_pktio_s    l3fwd_pktios[MAX_NB_PKTIO];
    struct thread_arg_s worker_args[MAX_NB_WORKER];
    odph_ethaddr_t      eth_dest_mac[MAX_NB_PKTIO];
    odp_barrier_t barrier;
    odp_shm_t shm;
    odp_atomic_u32_t exit_threads;
 
    /* forward func, hash or lpm */
    int (*fwd_func)(odp_packet_t pkt, int sif);
} global_data_t;
 
static global_data_t *global;
 
static int create_pktio(const char *name, odp_pool_t pool,
            struct l3fwd_pktio_s *fwd_pktio)
{
    odp_pktio_param_t pktio_param;
    odp_pktio_t pktio;
    odp_pktio_capability_t capa;
    odp_pktio_config_t config;
    int rc;
 
    odp_pktio_param_init(&pktio_param);
 
    pktio = odp_pktio_open(name, pool, &pktio_param);
    if (pktio == ODP_PKTIO_INVALID) {
        printf("Failed to open %s\n", name);
        return -1;
    }
    fwd_pktio->pktio = pktio;
 
    rc = odp_pktio_capability(pktio, &capa);
    if (rc) {
        printf("Error: pktio %s: unable to read capabilities!\n",
               name);
 
        return -1;
    }
 
    odp_pktio_config_init(&config);
    config.parser.layer = global->cmd_args.error_check ?
            ODP_PROTO_LAYER_ALL :
            ODP_PROTO_LAYER_L4;
 
    /* Provide hint to pktio that packet references are not used */
    config.pktout.bit.no_packet_refs = 1;
 
    odp_pktio_config(pktio, &config);
 
    fwd_pktio->nb_rxq = (int)capa.max_input_queues;
    fwd_pktio->nb_txq = (int)capa.max_output_queues;
 
    if (fwd_pktio->nb_rxq > MAX_NB_QUEUE)
        fwd_pktio->nb_rxq = MAX_NB_QUEUE;
 
    if (fwd_pktio->nb_txq > MAX_NB_QUEUE)
        fwd_pktio->nb_txq = MAX_NB_QUEUE;
 
    return 0;
}
 
static void setup_fwd_db(void)
{
    fwd_db_entry_t *entry;
    int if_idx;
    app_args_t *args;
 
    args = &global->cmd_args;
    if (args->hash_mode)
        init_fwd_hash_cache();
    else
        fib_tbl_init();
 
    for (entry = fwd_db->list; NULL != entry; entry = entry->next) {
        if_idx = entry->oif_id;
        if (!args->hash_mode)
            fib_tbl_insert(entry->subnet.addr, if_idx,
                       entry->subnet.depth);
        if (args->dest_mac_changed[if_idx])
            global->eth_dest_mac[if_idx] = entry->dst_mac;
        else
            entry->dst_mac = global->eth_dest_mac[if_idx];
    }
}
 
static inline void ipv4_dec_ttl_csum_update(odph_ipv4hdr_t *ip)
{
    uint16_t a = ~odp_cpu_to_be_16(1 << 8);
 
    ip->ttl--;
    if (ip->chksum >= a)
        ip->chksum -= a;
    else
        ip->chksum += odp_cpu_to_be_16(1 << 8);
}
 
static inline int l3fwd_pkt_hash(odp_packet_t pkt, int sif)
{
    fwd_db_entry_t *entry;
    ipv4_tuple5_t key;
    odph_ethhdr_t *eth;
    odph_udphdr_t  *udp;
    odph_ipv4hdr_t *ip;
    int dif;
 
    ip = odp_packet_l3_ptr(pkt, NULL);
    key.dst_ip = odp_be_to_cpu_32(ip->dst_addr);
    key.src_ip = odp_be_to_cpu_32(ip->src_addr);
    key.proto = ip->proto;
 
    if (odp_packet_has_udp(pkt) ||
        odp_packet_has_tcp(pkt)) {
        /* UDP or TCP*/
        void *ptr = odp_packet_l4_ptr(pkt, NULL);
 
        udp = (odph_udphdr_t *)ptr;
        key.src_port = odp_be_to_cpu_16(udp->src_port);
        key.dst_port = odp_be_to_cpu_16(udp->dst_port);
    } else {
        key.src_port = 0;
        key.dst_port = 0;
    }
    entry = find_fwd_db_entry(&key);
    ipv4_dec_ttl_csum_update(ip);
    eth = odp_packet_l2_ptr(pkt, NULL);
    if (entry) {
        eth->src = entry->src_mac;
        eth->dst = entry->dst_mac;
        dif = entry->oif_id;
    } else {
        /* no route, send by src port */
        eth->dst = eth->src;
        dif = sif;
    }
 
    return dif;
}
 
static inline int l3fwd_pkt_lpm(odp_packet_t pkt, int sif)
{
    odph_ipv4hdr_t *ip;
    odph_ethhdr_t *eth;
    int dif;
    int ret;
 
    ip = odp_packet_l3_ptr(pkt, NULL);
    ipv4_dec_ttl_csum_update(ip);
    eth = odp_packet_l2_ptr(pkt, NULL);
 
    /* network byte order maybe different from host */
    ret = fib_tbl_lookup(odp_be_to_cpu_32(ip->dst_addr), &dif);
    if (ret)
        dif = sif;
 
    eth->dst = global->eth_dest_mac[dif];
    eth->src = global->l3fwd_pktios[dif].mac_addr;
 
    return dif;
}
 
static inline int drop_err_pkts(odp_packet_t pkt_tbl[], unsigned num)
{
    odp_packet_t pkt;
    unsigned dropped = 0;
    unsigned i, j;
    int err;
 
    for (i = 0, j = 0; i < num; ++i) {
        pkt = pkt_tbl[i];
        err = 0;
 
        if (global->cmd_args.error_check)
            err = odp_packet_has_error(pkt);
 
        if (odp_unlikely(err || !odp_packet_has_ipv4(pkt))) {
            odp_packet_free(pkt);
            dropped++;
        } else if (odp_unlikely(i != j++)) {
            pkt_tbl[j - 1] = pkt;
        }
    }
 
    return dropped;
}
 
static int run_worker(void *arg)
{
    int if_idx;
    struct thread_arg_s *thr_arg = arg;
    odp_pktin_queue_t inq;
    int input_ifs[thr_arg->nb_pktio];
    odp_pktin_queue_t input_queues[thr_arg->nb_pktio];
    odp_pktout_queue_t output_queues[global->cmd_args.if_count];
    odp_packet_t pkt_tbl[MAX_PKT_BURST];
    odp_packet_t *tbl;
    int pkts, drop, sent;
    int dst_port, dif;
    int i, j;
    int pktio = 0;
    int num_pktio = 0;
 
    /* Copy all required handles to local memory */
    for (i = 0; i < global->cmd_args.if_count; i++) {
        int txq_idx = thr_arg->pktio[i].txq_idx;
 
        output_queues[i] =  global->l3fwd_pktios[i].ifout[txq_idx];
 
        if_idx = thr_arg->pktio[i].if_idx;
        for (j = 0; j < thr_arg->pktio[i].nb_rxq; j++) {
            int rxq_idx = thr_arg->pktio[i].rxq[j];
 
            inq = global->l3fwd_pktios[if_idx].ifin[rxq_idx];
            input_ifs[num_pktio] = if_idx;
            input_queues[num_pktio] = inq;
            num_pktio++;
        }
    }
 
    if (num_pktio == 0)
        ODPH_ABORT("No pktio devices found\n");
 
    if_idx = input_ifs[pktio];
    inq = input_queues[pktio];
 
    odp_barrier_wait(&global->barrier);
 
    while (!odp_atomic_load_u32(&global->exit_threads)) {
        if (num_pktio > 1) {
            if_idx = input_ifs[pktio];
            inq = input_queues[pktio];
            pktio++;
            if (pktio == num_pktio)
                pktio = 0;
        }
 
        pkts = odp_pktin_recv(inq, pkt_tbl, MAX_PKT_BURST);
        if (pkts < 1)
            continue;
 
        thr_arg->packets += pkts;
        drop = drop_err_pkts(pkt_tbl, pkts);
        pkts -= drop;
        thr_arg->rx_drops += drop;
        if (odp_unlikely(pkts < 1))
            continue;
 
        dif = global->fwd_func(pkt_tbl[0], if_idx);
        tbl = &pkt_tbl[0];
        while (pkts) {
            dst_port = dif;
            for (i = 1; i < pkts; i++) {
                dif = global->fwd_func(tbl[i], if_idx);
                if (dif != dst_port)
                    break;
            }
            sent = odp_pktout_send(output_queues[dst_port], tbl, i);
            if (odp_unlikely(sent < i)) {
                sent = sent < 0 ? 0 : sent;
                odp_packet_free_multi(&tbl[sent], i - sent);
                thr_arg->tx_drops += i - sent;
            }
 
            if (i < pkts)
                tbl += i;
 
            pkts -= i;
        }
    }
 
    /* Make sure that latest stat writes are visible to other threads */
    odp_mb_full();
 
    return 0;
}
 
static int find_port_id_by_name(char *name, app_args_t *args)
{
    int i;
 
    if (!name)
        return -1;
 
    for (i = 0; i < args->if_count; i++) {
        if (!strcmp(name, args->if_names[i]))
            return i;
    }
 
    return -1;
}
 
/* split string into tokens */
static int split_string(char *str, int stringlen,
            char **tokens, int maxtokens, char delim)
{
    int i, tok = 0;
    int tokstart = 1; /* first token is right at start of string */
 
    if (str == NULL || tokens == NULL)
        goto einval_error;
 
    for (i = 0; i < stringlen; i++) {
        if (str[i] == '\0' || tok >= maxtokens)
            break;
        if (tokstart) {
            tokstart = 0;
            tokens[tok++] = &str[i];
        }
        if (str[i] == delim) {
            str[i] = '\0';
            tokstart = 1;
        }
    }
    return tok;
 
einval_error:
    errno = EINVAL;
    return -1;
}
 
static int parse_config(char *cfg_str, app_args_t *args)
{
    char s[256];
    const char *p, *p0 = cfg_str;
    char *end;
    enum fieldnames {
        FLD_PORT = 0,
        FLD_QUEUE,
        FLD_LCORE,
        FLD_LAST
    };
    unsigned long int_fld[FLD_LAST];
    char *str_fld[FLD_LAST];
    int i;
    unsigned size;
    int nb_qconfs = 0;
    struct l3fwd_qconf_s *qconf_array = &args->qconf_config[0];
 
    p = strchr(p0, '(');
    while (p != NULL) {
        ++p;
        p0 = strchr(p, ')');
        if (p0 == NULL)
            return -1;
 
        size = p0 - p;
        if (size >= sizeof(s))
            return -1;
 
        snprintf(s, sizeof(s), "%.*s", size, p);
        i = split_string(s, sizeof(s), str_fld, FLD_LAST, ',');
        if (i != FLD_LAST)
            return -1;
        for (i = 0; i < FLD_LAST; 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_qconfs >= MAX_NB_QCONFS) {
            printf("exceeded max number of queue params: %d\n",
                   nb_qconfs);
            return -1;
        }
        qconf_array[nb_qconfs].if_idx = (uint8_t)int_fld[FLD_PORT];
        qconf_array[nb_qconfs].rxq_idx = (uint8_t)int_fld[FLD_QUEUE];
        qconf_array[nb_qconfs].core_idx = (uint8_t)int_fld[FLD_LCORE];
        ++nb_qconfs;
 
        p = strchr(p0, '(');
    }
    args->qconf_count = nb_qconfs;
 
    return 0;
}
 
static void print_usage(char *progname)
{
    printf("\n"
           "ODP L3 forwarding application.\n"
           "\n"
           "Usage: %s OPTIONS\n"
           "  E.g. %s -i eth0,eth1 -r 1.1.1.0/24,eth0 -r 2.2.2.0/24,eth1\n"
           " In the above example,\n"
           " eth0 will send pkts to eth1 and vice versa\n"
           "\n"
           "Mandatory OPTIONS:\n"
           "  -i, --interface eth interfaces (comma-separated, no spaces)\n"
           "  -r, --route SubNet,Intf[,NextHopMAC]\n"
           "    NextHopMAC can be optional\n"
           "\n"
           "Optional OPTIONS:\n"
           "  -s, --style [lpm|hash], ip lookup method\n"
           "    optional, default as lpm\n"
           "  -d, --duration Seconds to run and print stats\n"
           "    optional, default as 0, run forever\n"
           "  -t, --thread Number of threads to do forwarding\n"
           "    0=all available, default=1\n"
           "  -q, --queue  Configure rx queue(s) for port\n"
           "    optional, format: [(port, queue, thread),...]\n"
           "    for example: -q '(0, 0, 1),(1,0,2)'\n"
           "  -e, --error_check 0: Don't check packet errors (default)\n"
           "                    1: Check packet errors\n"
           "  -h, --help   Display help and exit.\n\n"
           "\n", NO_PATH(progname), NO_PATH(progname)
        );
}
 
static void parse_cmdline_args(int argc, char *argv[], app_args_t *args)
{
    int opt;
    int long_index;
    char *token, *local;
    size_t len, route_index = 0;
    int mem_failure = 0;
    unsigned int i;
 
    static struct option longopts[] = {
        {"interface", required_argument, NULL, 'i'},    /* return 'i' */
        {"route", required_argument, NULL, 'r'},    /* return 'r' */
        {"style", required_argument, NULL, 's'},    /* return 's' */
        {"duration", required_argument, NULL, 'd'}, /* return 'd' */
        {"thread", required_argument, NULL, 't'},   /* return 't' */
        {"queue", required_argument, NULL, 'q'},    /* return 'q' */
        {"error_check", required_argument, NULL, 'e'},
        {"help", no_argument, NULL, 'h'},       /* return 'h' */
        {NULL, 0, NULL, 0}
    };
 
    args->worker_count = 1; /* use one worker by default */
 
    while (1) {
        opt = getopt_long(argc, argv, "+s:t:d:i:r:q:e:h",
                  longopts, &long_index);
 
        if (opt == -1)
            break;  /* No more options */
 
        switch (opt) {
        /* parse ip lookup method */
        case 's':
            if (!strcmp(optarg, "hash"))
                args->hash_mode = 1;
            break;
        /* parse number of worker threads to be run*/
        case 't':
            i = odp_cpu_count();
            args->worker_count = atoi(optarg);
            if (args->worker_count > i) {
                printf("Too many threads,"
                       "truncate to cpu count: %d\n", i);
                args->worker_count = i;
            }
 
            break;
 
        /* parse seconds to run */
        case 'd':
            args->duration = atoi(optarg);
            break;
 
        /* parse packet-io interface names */
        case 'i':
            len = strlen(optarg);
            if (len == 0) {
                print_usage(argv[0]);
                exit(EXIT_FAILURE);
            }
            len += 1;   /* add room for '\0' */
 
            local = malloc(len);
            if (!local) {
                print_usage(argv[0]);
                exit(EXIT_FAILURE);
            }
            args->if_names_buf = local;
 
            /* store the if names (reset names string) */
            strcpy(local, optarg);
            for (token = strtok(local, ","), i = 0;
                 token != NULL; token = strtok(NULL, ","), i++) {
                if (i >= MAX_NB_PKTIO) {
                    printf("too many ports specified, "
                           "truncated to %d", MAX_NB_PKTIO);
                    break; /* for */
                }
                args->if_names[i] = token;
            }
            if (i == 0) {
                print_usage(argv[0]);
                free(local);
                exit(EXIT_FAILURE);
            }
            args->if_count = i;
            break;
 
        /*Configure Route in forwarding database*/
        case 'r':
            if (route_index >= MAX_NB_ROUTE) {
                printf("No more routes can be added\n");
                break;
            }
            local = calloc(1, strlen(optarg) + 1);
            if (!local) {
                mem_failure = 1;
                break;
            }
            memcpy(local, optarg, strlen(optarg));
            local[strlen(optarg)] = '\0';
            args->route_str[route_index++] = local;
            break;
 
        case 'e':
            args->error_check = atoi(optarg);
            break;
 
        case 'h':
            print_usage(argv[0]);
            exit(EXIT_SUCCESS);
            break;
 
        case 'q':
            parse_config(optarg, args);
            break;
 
        default:
            break;
        }
    }
 
    /* checking arguments */
    if (args->if_count == 0) {
        printf("\nNo option -i specified.\n");
        goto out;
    }
 
    if (args->route_str[0] == NULL) {
        printf("\nNo option -r specified.\n");
        goto out;
    }
 
    if (mem_failure == 1) {
        printf("\nAllocate memory failure.\n");
        goto out;
    }
    optind = 1;     /* reset 'extern optind' from the getopt lib */
    return;
 
out:
    print_usage(argv[0]);
    exit(EXIT_FAILURE);
}
 
static void print_info(char *progname, app_args_t *args)
{
    int i;
 
    odp_sys_info_print();
 
    printf("Running ODP appl: \"%s\"\n"
           "-----------------\n"
           "IP Lookup:   %s\n"
           "IF Count:        %i\n"
           "Using IFs:      ",
           progname,
           args->hash_mode ? "hash" : "lpm",
           args->if_count);
 
    for (i = 0; i < args->if_count; ++i)
        printf(" %s", args->if_names[i]);
 
    printf("\n\n");
    fflush(NULL);
}
 
static void setup_worker_qconf(app_args_t *args)
{
    int j, rxq_idx, pktio;
    unsigned int i, nb_worker, if_count;
    struct thread_arg_s *arg;
    struct l3fwd_pktio_s *port;
    uint8_t queue_mask[MAX_NB_PKTIO][MAX_NB_QUEUE];
 
    nb_worker = args->worker_count;
    if_count = args->if_count;
 
    /* distribute rx queues among threads as round-robin */
    if (!args->qconf_count) {
        if (nb_worker > if_count) {
            for (i = 0; i < nb_worker; i++) {
                arg = &global->worker_args[i];
                arg->thr_idx = i;
                j = i % if_count;
                port = &global->l3fwd_pktios[j];
                arg->pktio[0].rxq[0] =
                    port->rxq_idx % port->nb_rxq;
                arg->pktio[0].nb_rxq = 1;
                arg->pktio[0].if_idx = j;
                arg->nb_pktio = 1;
                port->rxq_idx++;
            }
        } else {
            for (i = 0; i < if_count; i++) {
                j = i % nb_worker;
                arg = &global->worker_args[j];
                arg->thr_idx = j;
                port = &global->l3fwd_pktios[i];
                rxq_idx = arg->pktio[i].nb_rxq;
                pktio = arg->nb_pktio;
                arg->pktio[pktio].rxq[rxq_idx] =
                    port->rxq_idx % port->nb_rxq;
                arg->pktio[pktio].nb_rxq++;
                arg->pktio[pktio].if_idx = i;
                arg->nb_pktio++;
                port->rxq_idx++;
            }
        }
    }
 
    /* distribute rx queues among threads as q argument */
    memset(queue_mask, 0, sizeof(queue_mask));
    for (i = 0; i < args->qconf_count; i++) {
        struct l3fwd_qconf_s *q;
 
        q = &args->qconf_config[i];
        if (q->core_idx >= nb_worker || q->if_idx >= if_count)
            ODPH_ABORT("Error queue (%d, %d, %d), max port: %d, "
                   "max core: %d\n", q->if_idx, q->rxq_idx,
                   q->core_idx, args->if_count - 1,
                   args->worker_count - 1);
 
        /* check if one queue is configured twice or more */
        if (queue_mask[q->if_idx][q->rxq_idx])
            ODPH_ABORT("Error queue (%d, %d, %d), reconfig queue\n",
                   q->if_idx, q->rxq_idx, q->core_idx);
        queue_mask[q->if_idx][q->rxq_idx] = 1;
 
        port = &global->l3fwd_pktios[q->if_idx];
        if (port->rxq_idx < q->rxq_idx)
            ODPH_ABORT("Error queue (%d, %d, %d), queue should be "
                   "in sequence and start from 0, queue %d\n",
                   q->if_idx, q->rxq_idx, q->core_idx,
                   q->rxq_idx);
 
        if (q->rxq_idx > port->nb_rxq) {
            ODPH_ABORT("Error queue (%d, %d, %d), max queue %d\n",
                   q->if_idx, q->rxq_idx, q->core_idx,
                   port->nb_rxq - 1);
        }
        port->rxq_idx = q->rxq_idx + 1;
 
        /* put the queue into worker_args */
        arg = &global->worker_args[q->core_idx];
 
        /* Check if interface already has queues configured */
        for (j = 0; j < args->if_count; j++) {
            if (arg->pktio[j].if_idx == q->if_idx)
                break;
        }
        if (j == args->if_count)
            j = arg->nb_pktio++;
 
        rxq_idx =  arg->pktio[j].nb_rxq;
        arg->pktio[j].rxq[rxq_idx] = q->rxq_idx;
        arg->pktio[j].nb_rxq++;
        arg->pktio[j].if_idx = q->if_idx;
        arg->thr_idx = q->core_idx;
    }
    /* distribute tx queues among threads */
    for (i = 0; i < args->worker_count; i++) {
        arg = &global->worker_args[i];
        for (j = 0; j < args->if_count; j++) {
            port = &global->l3fwd_pktios[j];
            arg->pktio[j].txq_idx =
                port->txq_idx % port->nb_txq;
            port->txq_idx++;
        }
    }
 
    /* config and initialize rx and tx queues. */
    for (i = 0; i < if_count; i++) {
        odp_pktin_queue_param_t in_queue_param;
        odp_pktout_queue_param_t out_queue_param;
        odp_pktin_queue_t *inq;
        odp_pktout_queue_t *outq;
        const char *name;
        int nb_rxq, nb_txq;
 
        port = &global->l3fwd_pktios[i];
        name = args->if_names[i];
        odp_pktin_queue_param_init(&in_queue_param);
        odp_pktout_queue_param_init(&out_queue_param);
 
        in_queue_param.op_mode = ODP_PKTIO_OP_MT_UNSAFE;
        out_queue_param.op_mode = ODP_PKTIO_OP_MT_UNSAFE;
 
        in_queue_param.num_queues = port->rxq_idx;
        if (port->rxq_idx > port->nb_rxq) {
            in_queue_param.num_queues = port->nb_rxq;
            in_queue_param.op_mode = ODP_PKTIO_OP_MT;
        }
 
        in_queue_param.hash_enable = (in_queue_param.num_queues > 1) ?
                        1 : 0;
        in_queue_param.hash_proto.proto.ipv4 = 1;
        in_queue_param.hash_proto.proto.ipv4_tcp = 1;
        in_queue_param.hash_proto.proto.ipv4_udp = 1;
 
        if (odp_pktin_queue_config(port->pktio, &in_queue_param))
            ODPH_ABORT("Fail to config input queue for port %s\n",
                   name);
 
        out_queue_param.num_queues = port->txq_idx;
        if (port->txq_idx > port->nb_txq) {
            out_queue_param.num_queues = port->nb_txq;
            out_queue_param.op_mode = ODP_PKTIO_OP_MT;
        }
        if (odp_pktout_queue_config(port->pktio, &out_queue_param))
            ODPH_ABORT("Fail to config output queue for port %s\n",
                   name);
 
        inq = port->ifin;
        nb_rxq = in_queue_param.num_queues;
        if (odp_pktin_queue(port->pktio, inq, nb_rxq) != nb_rxq)
            ODPH_ABORT("Fail to set pktin queue for port %s\n",
                   name);
 
        outq = port->ifout;
        nb_txq = out_queue_param.num_queues;
        if (odp_pktout_queue(port->pktio, outq, nb_txq) != nb_txq)
            ODPH_ABORT("Fail to set pktout queue for port %s\n",
                   name);
    }
}
 
static void print_qconf_table(app_args_t *args)
{
    unsigned int i;
    int j, k, qid, if_idx;
    char buf[32];
    struct thread_arg_s *thr_arg;
 
    printf("Rx Queue table\n"
           "-----------------\n"
           "%-32s%-16s%-16s\n",
           "port/id", "rxq", "thread");
 
    for (i = 0; i < args->worker_count; i++) {
        thr_arg = &global->worker_args[i];
        for (j = 0; j < args->if_count; j++) {
            if (!thr_arg->pktio[j].nb_rxq)
                continue;
 
            if_idx = thr_arg->pktio[j].if_idx;
            snprintf(buf, 32, "%s/%d", args->if_names[if_idx],
                 if_idx);
            for (k = 0; k < MAX_NB_QUEUE; k++) {
                qid = thr_arg->pktio[j].rxq[k];
                if (qid != INVALID_ID)
                    printf("%-32s%-16d%-16d\n", buf, qid,
                           thr_arg->thr_idx);
            }
        }
    }
    printf("\n");
    fflush(NULL);
}
 
static int print_speed_stats(int num_workers, int duration, int timeout)
{
    uint64_t pkts = 0;
    uint64_t pkts_prev = 0;
    uint64_t pps;
    uint64_t rx_drops, tx_drops;
    uint64_t maximum_pps = 0;
    int i;
    int elapsed = 0;
    int stats_enabled = 1;
    int loop_forever = (duration == 0);
 
    if (timeout <= 0) {
        stats_enabled = 0;
        timeout = 1;
    }
    /* Wait for all threads to be ready*/
    odp_barrier_wait(&global->barrier);
 
    do {
        pkts = 0;
        rx_drops = 0;
        tx_drops = 0;
        sleep(timeout);
 
        for (i = 0; i < num_workers; i++) {
            pkts += global->worker_args[i].packets;
            rx_drops += global->worker_args[i].rx_drops;
            tx_drops += global->worker_args[i].tx_drops;
        }
        if (stats_enabled) {
            pps = (pkts - pkts_prev) / timeout;
            if (pps > maximum_pps)
                maximum_pps = pps;
            printf("%" PRIu64 " pps, %" PRIu64 " max pps, ",  pps,
                   maximum_pps);
 
            printf(" %" PRIu64 " rx drops, %" PRIu64 " tx drops\n",
                   rx_drops, tx_drops);
 
            pkts_prev = pkts;
        }
        elapsed += timeout;
    } while (loop_forever || (elapsed < duration));
 
    if (stats_enabled)
        printf("TEST RESULT: %" PRIu64 " maximum packets per second.\n",
               maximum_pps);
 
    return pkts > 100 ? 0 : -1;
}
 
int main(int argc, char **argv)
{
    odph_thread_t thread_tbl[MAX_NB_WORKER];
    odph_thread_common_param_t thr_common;
    odph_thread_param_t thr_param[MAX_NB_WORKER];
    odp_pool_t pool;
    odp_pool_param_t params;
    odp_shm_t shm;
    odp_instance_t instance;
    odp_cpumask_t cpumask;
    int i, j, nb_worker;
    uint8_t mac[ODPH_ETHADDR_LEN];
    uint8_t *dst_mac;
    app_args_t *args;
    struct thread_arg_s *thr_arg;
    char *oif;
 
    if (odp_init_global(&instance, NULL, NULL)) {
        printf("Error: ODP global init failed.\n");
        exit(1);
    }
 
    if (odp_init_local(instance, ODP_THREAD_CONTROL)) {
        printf("Error: ODP local init failed.\n");
        exit(1);
    }
 
    /* Reserve memory for args from shared mem */
    shm = odp_shm_reserve("_appl_global_data", sizeof(global_data_t),
                  ODP_CACHE_LINE_SIZE, 0);
    if (shm == ODP_SHM_INVALID) {
        printf("Error: shared mem reserve failed.\n");
        exit(EXIT_FAILURE);
    }
 
    global = odp_shm_addr(shm);
    if (global == NULL) {
        printf("Error: shared mem alloc failed.\n");
        exit(EXIT_FAILURE);
    }
 
    memset(global, 0, sizeof(global_data_t));
    odp_atomic_init_u32(&global->exit_threads, 0);
    global->shm = shm;
 
    /* Initialize the dest mac as 2:0:0:0:0:x */
    mac[0] = 2;
    for (i = 0; i < MAX_NB_PKTIO; i++) {
        mac[ODPH_ETHADDR_LEN - 1] = (uint8_t)i;
        memcpy(global->eth_dest_mac[i].addr, mac, ODPH_ETHADDR_LEN);
    }
 
    /* Initialize the thread arguments */
    for (i = 0; i < MAX_NB_WORKER; i++) {
        thr_arg = &global->worker_args[i];
        for (j = 0; j < MAX_NB_PKTIO; j++) {
            thr_arg->thr_idx = INVALID_ID;
            thr_arg->pktio[j].txq_idx = INVALID_ID;
            thr_arg->pktio[j].if_idx = INVALID_ID;
            memset(thr_arg->pktio[j].rxq, INVALID_ID,
                   sizeof(thr_arg->pktio[j].rxq));
        }
    }
 
    /* Parse cmdline arguments */
    args = &global->cmd_args;
    parse_cmdline_args(argc, argv, args);
 
    /* Init l3fwd table */
    init_fwd_db();
 
    /* Add route into table */
    for (i = 0; i < MAX_NB_ROUTE; i++) {
        if (args->route_str[i]) {
            create_fwd_db_entry(args->route_str[i], &oif, &dst_mac);
            if (oif == NULL) {
                printf("Error: fail to create route entry.\n");
                exit(1);
            }
 
            j = find_port_id_by_name(oif, args);
            if (j == -1) {
                printf("Error: port %s not used.\n", oif);
                exit(1);
            }
 
            if (dst_mac)
                args->dest_mac_changed[j] = 1;
        }
    }
 
    print_info(NO_PATH(argv[0]), args);
 
    /* Create packet pool */
    odp_pool_param_init(&params);
    params.pkt.seg_len = POOL_SEG_LEN;
    params.pkt.len     = POOL_SEG_LEN;
    params.pkt.num     = POOL_NUM_PKT;
    params.type        = ODP_POOL_PACKET;
 
    pool = odp_pool_create("packet pool", &params);
 
    if (pool == ODP_POOL_INVALID) {
        printf("Error: packet pool create failed.\n");
        exit(1);
    }
 
    /* Resolve fwd db*/
    for (i = 0; i < args->if_count; i++) {
        struct l3fwd_pktio_s *port;
        char *if_name;
 
        if_name = args->if_names[i];
        port = &global->l3fwd_pktios[i];
        if (create_pktio(if_name, pool, port)) {
            printf("Error: create pktio %s\n", if_name);
            exit(1);
        }
        odp_pktio_mac_addr(port->pktio, mac, ODPH_ETHADDR_LEN);
        resolve_fwd_db(if_name, i, mac);
        memcpy(port->mac_addr.addr, mac, ODPH_ETHADDR_LEN);
    }
    setup_fwd_db();
    dump_fwd_db();
 
    nb_worker = MAX_NB_WORKER;
    if (args->worker_count && args->worker_count < MAX_NB_WORKER)
        nb_worker = args->worker_count;
    nb_worker = odp_cpumask_default_worker(&cpumask, nb_worker);
    args->worker_count = nb_worker;
 
    /* Setup rx and tx queues for each port */
    setup_worker_qconf(args);
    print_qconf_table(args);
 
    /* Decide ip lookup method */
    if (args->hash_mode)
        global->fwd_func = l3fwd_pkt_hash;
    else
        global->fwd_func = l3fwd_pkt_lpm;
 
    /* Start all the available ports */
    for (i = 0; i < args->if_count; i++) {
        struct l3fwd_pktio_s *port;
        char *if_name;
        char buf[32];
 
        if_name = args->if_names[i];
        port = &global->l3fwd_pktios[i];
        /* start pktio */
        if (odp_pktio_start(port->pktio)) {
            printf("unable to start pktio: %s\n", if_name);
            exit(1);
        }
 
        sprintf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
            port->mac_addr.addr[0],
            port->mac_addr.addr[1],
            port->mac_addr.addr[2],
            port->mac_addr.addr[3],
            port->mac_addr.addr[4],
            port->mac_addr.addr[5]);
        printf("start pktio: %s, mac %s\n", if_name, buf);
    }
 
    odp_barrier_init(&global->barrier, nb_worker + 1);
 
    odph_thread_common_param_init(&thr_common);
    thr_common.instance = instance;
    thr_common.cpumask = &cpumask;
 
    for (i = 0; i < nb_worker; i++) {
        odph_thread_param_init(&thr_param[i]);
        thr_param[i].start = run_worker;
        thr_param[i].arg = &global->worker_args[i];
        thr_param[i].thr_type = ODP_THREAD_WORKER;
    }
 
    memset(thread_tbl, 0, sizeof(thread_tbl));
    odph_thread_create(thread_tbl, &thr_common, thr_param, nb_worker);
 
    print_speed_stats(nb_worker, args->duration, PRINT_INTERVAL);
    odp_atomic_store_u32(&global->exit_threads, 1);
 
    /* wait for other threads to join */
    odph_thread_join(thread_tbl, nb_worker);
 
    /* Stop and close used pktio devices */
    for (i = 0; i < args->if_count; i++) {
        odp_pktio_t pktio = global->l3fwd_pktios[i].pktio;
 
        if (odp_pktio_stop(pktio) || odp_pktio_close(pktio)) {
            printf("Error: failed to close pktio\n");
            exit(EXIT_FAILURE);
        }
    }
 
    /* if_names share a single buffer */
    free(args->if_names_buf);
 
    for (i = 0; i < MAX_NB_ROUTE; i++)
        free(args->route_str[i]);
 
    shm = odp_shm_lookup("flow_table");
    if (shm != ODP_SHM_INVALID && odp_shm_free(shm) != 0) {
        printf("Error: shm free flow_table\n");
        exit(EXIT_FAILURE);
    }
    shm = odp_shm_lookup("shm_fwd_db");
    if (shm != ODP_SHM_INVALID && odp_shm_free(shm) != 0) {
        printf("Error: shm free shm_fwd_db\n");
        exit(EXIT_FAILURE);
    }
    shm = odp_shm_lookup("fib_lpm_sub");
    if (shm != ODP_SHM_INVALID && odp_shm_free(shm) != 0) {
        printf("Error: shm free fib_lpm_sub\n");
        exit(EXIT_FAILURE);
    }
 
    if (odp_pool_destroy(pool)) {
        printf("Error: pool destroy\n");
        exit(EXIT_FAILURE);
    }
 
    if (odp_shm_free(global->shm)) {
        printf("Error: shm free global data\n");
        exit(EXIT_FAILURE);
    }
 
    if (odp_term_local()) {
        printf("Error: term local\n");
        exit(EXIT_FAILURE);
    }
 
    if (odp_term_global(instance)) {
        printf("Error: term global\n");
        exit(EXIT_FAILURE);
    }
 
    return 0;
}