examples/qos_sched/main.c

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

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

#include <rte_log.h>
#include <rte_mbuf.h>
#include <rte_malloc.h>
#include <rte_cycles.h>
#include <rte_ethdev.h>
#include <rte_memcpy.h>
#include <rte_byteorder.h>
#include <rte_branch_prediction.h>

#include <rte_sched.h>

#include "main.h"

#define APP_MODE_NONE 0
#define APP_RX_MODE   1
#define APP_WT_MODE   2
#define APP_TX_MODE   4

uint8_t interactive = APP_INTERACTIVE_DEFAULT;
uint32_t qavg_period = APP_QAVG_PERIOD;
uint32_t qavg_ntimes = APP_QAVG_NTIMES;

/* main processing loop */
static int
app_main_loop(__attribute__((unused))void *dummy)
{
    uint32_t lcore_id;
    uint32_t i, mode;
    uint32_t rx_idx = 0;
    uint32_t wt_idx = 0;
    uint32_t tx_idx = 0;
    struct thread_conf *rx_confs[MAX_DATA_STREAMS];
    struct thread_conf *wt_confs[MAX_DATA_STREAMS];
    struct thread_conf *tx_confs[MAX_DATA_STREAMS];

    memset(rx_confs, 0, sizeof(rx_confs));
    memset(wt_confs, 0, sizeof(wt_confs));
    memset(tx_confs, 0, sizeof(tx_confs));


    mode = APP_MODE_NONE;
    lcore_id = rte_lcore_id();

    for (i = 0; i < nb_pfc; i++) {
        struct flow_conf *flow = &qos_conf[i];

        if (flow->rx_core == lcore_id) {
            flow->rx_thread.rx_port = flow->rx_port;
            flow->rx_thread.rx_ring =  flow->rx_ring;
            flow->rx_thread.rx_queue = flow->rx_queue;

            rx_confs[rx_idx++] = &flow->rx_thread;

            mode |= APP_RX_MODE;
        }
        if (flow->tx_core == lcore_id) {
            flow->tx_thread.tx_port = flow->tx_port;
            flow->tx_thread.tx_ring =  flow->tx_ring;
            flow->tx_thread.tx_queue = flow->tx_queue;

            tx_confs[tx_idx++] = &flow->tx_thread;

            mode |= APP_TX_MODE;
        }
        if (flow->wt_core == lcore_id) {
            flow->wt_thread.rx_ring =  flow->rx_ring;
            flow->wt_thread.tx_ring =  flow->tx_ring;
            flow->wt_thread.tx_port =  flow->tx_port;
            flow->wt_thread.sched_port =  flow->sched_port;

            wt_confs[wt_idx++] = &flow->wt_thread;

            mode |= APP_WT_MODE;
        }
    }

    if (mode == APP_MODE_NONE) {
        RTE_LOG(INFO, APP, "lcore %u has nothing to do\n", lcore_id);
        return -1;
    }

    if (mode == (APP_RX_MODE | APP_WT_MODE)) {
        RTE_LOG(INFO, APP, "lcore %u was configured for both RX and WT !!!\n",
                 lcore_id);
        return -1;
    }

    RTE_LOG(INFO, APP, "entering main loop on lcore %u\n", lcore_id);
    /* initialize mbuf memory */
    if (mode == APP_RX_MODE) {
        for (i = 0; i < rx_idx; i++) {
            RTE_LOG(INFO, APP, "flow%u lcoreid%u reading port%u\n",
                    i, lcore_id, rx_confs[i]->rx_port);
        }

        app_rx_thread(rx_confs);
    }
    else if (mode == (APP_TX_MODE | APP_WT_MODE)) {
        for (i = 0; i < wt_idx; i++) {
            wt_confs[i]->m_table = rte_malloc("table_wt", sizeof(struct rte_mbuf *)
                    * burst_conf.tx_burst, RTE_CACHE_LINE_SIZE);

            if (wt_confs[i]->m_table == NULL)
                rte_panic("flow %u unable to allocate memory buffer\n", i);

            RTE_LOG(INFO, APP,
                "flow %u lcoreid %u sched+write port %u\n",
                    i, lcore_id, wt_confs[i]->tx_port);
        }

        app_mixed_thread(wt_confs);
    }
    else if (mode == APP_TX_MODE) {
        for (i = 0; i < tx_idx; i++) {
            tx_confs[i]->m_table = rte_malloc("table_tx", sizeof(struct rte_mbuf *)
                    * burst_conf.tx_burst, RTE_CACHE_LINE_SIZE);

            if (tx_confs[i]->m_table == NULL)
                rte_panic("flow %u unable to allocate memory buffer\n", i);

            RTE_LOG(INFO, APP, "flow%u lcoreid%u write port%u\n",
                    i, lcore_id, tx_confs[i]->tx_port);
        }

        app_tx_thread(tx_confs);
    }
    else if (mode == APP_WT_MODE){
        for (i = 0; i < wt_idx; i++) {
            RTE_LOG(INFO, APP, "flow %u lcoreid %u scheduling \n", i, lcore_id);
        }

        app_worker_thread(wt_confs);
    }

    return 0;
}

void
app_stat(void)
{
    uint32_t i;
    struct rte_eth_stats stats;
    static struct rte_eth_stats rx_stats[MAX_DATA_STREAMS];
    static struct rte_eth_stats tx_stats[MAX_DATA_STREAMS];

    /* print statistics */
    for(i = 0; i < nb_pfc; i++) {
        struct flow_conf *flow = &qos_conf[i];

        rte_eth_stats_get(flow->rx_port, &stats);
        printf("\nRX port %"PRIu16": rx: %"PRIu64 " err: %"PRIu64
                " no_mbuf: %"PRIu64 "\n",
                flow->rx_port,
                stats.ipackets - rx_stats[i].ipackets,
                stats.ierrors - rx_stats[i].ierrors,
                stats.rx_nombuf - rx_stats[i].rx_nombuf);
        memcpy(&rx_stats[i], &stats, sizeof(stats));

        rte_eth_stats_get(flow->tx_port, &stats);
        printf("TX port %"PRIu16": tx: %" PRIu64 " err: %" PRIu64 "\n",
                flow->tx_port,
                stats.opackets - tx_stats[i].opackets,
                stats.oerrors - tx_stats[i].oerrors);
        memcpy(&tx_stats[i], &stats, sizeof(stats));

#if APP_COLLECT_STAT
        printf("-------+------------+------------+\n");
        printf("       |  received  |   dropped  |\n");
        printf("-------+------------+------------+\n");
        printf("  RX   | %10" PRIu64 " | %10" PRIu64 " |\n",
            flow->rx_thread.stat.nb_rx,
            flow->rx_thread.stat.nb_drop);
        printf("QOS+TX | %10" PRIu64 " | %10" PRIu64 " |   pps: %"PRIu64 " \n",
            flow->wt_thread.stat.nb_rx,
            flow->wt_thread.stat.nb_drop,
            flow->wt_thread.stat.nb_rx - flow->wt_thread.stat.nb_drop);
        printf("-------+------------+------------+\n");

        memset(&flow->rx_thread.stat, 0, sizeof(struct thread_stat));
        memset(&flow->wt_thread.stat, 0, sizeof(struct thread_stat));
#endif
    }
}

int
main(int argc, char **argv)
{
    int ret;

    ret = app_parse_args(argc, argv);
    if (ret < 0)
        return -1;

    ret = app_init();
    if (ret < 0)
        return -1;

    /* launch per-lcore init on every lcore */
    rte_eal_mp_remote_launch(app_main_loop, NULL, SKIP_MASTER);

    if (interactive) {
        sleep(1);
        prompt();
    }
    else {
        /* print statistics every second */
        while(1) {
            sleep(1);
            app_stat();
        }
    }

    return 0;
}