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;
}