examples/qos_sched/init.c

/*-
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#include <stdint.h>
#include <memory.h>

#include <rte_log.h>
#include <rte_mbuf.h>
#include <rte_debug.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_sched.h>
#include <rte_cycles.h>
#include <rte_string_fns.h>
#include <rte_cfgfile.h>

#include "main.h"
#include "cfg_file.h"

uint32_t app_numa_mask = 0;
static uint32_t app_inited_port_mask = 0;

int app_pipe_to_profile[MAX_SCHED_SUBPORTS][MAX_SCHED_PIPES];

#define MAX_NAME_LEN 32

struct ring_conf ring_conf = {
        .rx_size   = APP_RX_DESC_DEFAULT,
        .ring_size = APP_RING_SIZE,
        .tx_size   = APP_TX_DESC_DEFAULT,
};

struct burst_conf burst_conf = {
        .rx_burst    = MAX_PKT_RX_BURST,
        .ring_burst  = PKT_ENQUEUE,
        .qos_dequeue = PKT_DEQUEUE,
        .tx_burst    = MAX_PKT_TX_BURST,
};

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

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

uint32_t nb_pfc;
const char *cfg_profile = NULL;
int mp_size = NB_MBUF;
struct flow_conf qos_conf[MAX_DATA_STREAMS];

static const struct rte_eth_conf port_conf = {
        .rxmode = {
                .max_rx_pkt_len = ETHER_MAX_LEN,
                .split_hdr_size = 0,
                .header_split   = 0, 
                .hw_ip_checksum = 0, 
                .hw_vlan_filter = 0, 
                .jumbo_frame    = 0, 
                .hw_strip_crc   = 1, 
        },
        .txmode = {
                .mq_mode = ETH_DCB_NONE,
        },
};

static int
app_init_port(uint8_t portid, struct rte_mempool *mp)
{
        int ret;
        struct rte_eth_link link;
        struct rte_eth_rxconf rx_conf;
        struct rte_eth_txconf tx_conf;

        /* check if port already initialized (multistream configuration) */
        if (app_inited_port_mask & (1u << portid))
                return 0;

        rx_conf.rx_thresh.pthresh = rx_thresh.pthresh;
        rx_conf.rx_thresh.hthresh = rx_thresh.hthresh;
        rx_conf.rx_thresh.wthresh = rx_thresh.wthresh;
        rx_conf.rx_free_thresh = 32;
        rx_conf.rx_drop_en = 0;

        tx_conf.tx_thresh.pthresh = tx_thresh.pthresh;
        tx_conf.tx_thresh.hthresh = tx_thresh.hthresh;
        tx_conf.tx_thresh.wthresh = tx_thresh.wthresh;
        tx_conf.tx_free_thresh = 0;
        tx_conf.tx_rs_thresh = 0;
        tx_conf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS | ETH_TXQ_FLAGS_NOOFFLOADS;

        /* init port */
        RTE_LOG(INFO, APP, "Initializing port %"PRIu8"... ", portid);
        fflush(stdout);
        ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "Cannot configure device: "
                                "err=%d, port=%"PRIu8"\n", ret, portid);

        /* init one RX queue */
        fflush(stdout);
        ret = rte_eth_rx_queue_setup(portid, 0, (uint16_t)ring_conf.rx_size,
                rte_eth_dev_socket_id(portid), &rx_conf, mp);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
                                "err=%d, port=%"PRIu8"\n", ret, portid);

        /* init one TX queue */
        fflush(stdout);
        ret = rte_eth_tx_queue_setup(portid, 0,
                (uint16_t)ring_conf.tx_size, rte_eth_dev_socket_id(portid), &tx_conf);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: err=%d, "
                                "port=%"PRIu8" queue=%d\n", ret, portid, 0);

        /* Start device */
        ret = rte_eth_dev_start(portid);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "rte_pmd_port_start: "
                                "err=%d, port=%"PRIu8"\n", ret, portid);

        printf("done: ");

        /* get link status */
        rte_eth_link_get(portid, &link);
        if (link.link_status) {
                printf(" Link Up - speed %u Mbps - %s\n",
                        (uint32_t) link.link_speed,
                        (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
                        ("full-duplex") : ("half-duplex\n"));
        } else {
                printf(" Link Down\n");
        }
        rte_eth_promiscuous_enable(portid);

        /* mark port as initialized */
        app_inited_port_mask |= 1u << portid;

        return 0;
}

static struct rte_sched_subport_params subport_params[MAX_SCHED_SUBPORTS] = {
        {
                .tb_rate = 1250000000,
                .tb_size = 1000000,

                .tc_rate = {1250000000, 1250000000, 1250000000, 1250000000},
                .tc_period = 10,
        },
};

static struct rte_sched_pipe_params pipe_profiles[RTE_SCHED_PIPE_PROFILES_PER_PORT] = {
        { /* Profile #0 */
                .tb_rate = 305175,
                .tb_size = 1000000,

                .tc_rate = {305175, 305175, 305175, 305175},
                .tc_period = 40,
#ifdef RTE_SCHED_SUBPORT_TC_OV
                .tc_ov_weight = 1,
#endif

                .wrr_weights = {1, 1, 1, 1,  1, 1, 1, 1,  1, 1, 1, 1,  1, 1, 1, 1},
        },
};

struct rte_sched_port_params port_params = {
        .name = "port_scheduler_0",
        .socket = 0, /* computed */
        .rate = 0, /* computed */
        .mtu = 6 + 6 + 4 + 4 + 2 + 1500,
        .frame_overhead = RTE_SCHED_FRAME_OVERHEAD_DEFAULT,
        .n_subports_per_port = 1,
        .n_pipes_per_subport = 4096,
        .qsize = {64, 64, 64, 64},
        .pipe_profiles = pipe_profiles,
        .n_pipe_profiles = sizeof(pipe_profiles) / sizeof(struct rte_sched_pipe_params),

#ifdef RTE_SCHED_RED
        .red_params = {
                /* Traffic Class 0 Colors Green / Yellow / Red */
                [0][0] = {.min_th = 48, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [0][1] = {.min_th = 40, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [0][2] = {.min_th = 32, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},

                /* Traffic Class 1 - Colors Green / Yellow / Red */
                [1][0] = {.min_th = 48, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [1][1] = {.min_th = 40, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [1][2] = {.min_th = 32, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},

                /* Traffic Class 2 - Colors Green / Yellow / Red */
                [2][0] = {.min_th = 48, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [2][1] = {.min_th = 40, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [2][2] = {.min_th = 32, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},

                /* Traffic Class 3 - Colors Green / Yellow / Red */
                [3][0] = {.min_th = 48, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [3][1] = {.min_th = 40, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9},
                [3][2] = {.min_th = 32, .max_th = 64, .maxp_inv = 10, .wq_log2 = 9}
        }
#endif /* RTE_SCHED_RED */
};

static struct rte_sched_port *
app_init_sched_port(uint32_t portid, uint32_t socketid)
{
        static char port_name[32]; /* static as referenced from global port_params*/
        struct rte_eth_link link;
        struct rte_sched_port *port = NULL;
        uint32_t pipe, subport;
        int err;

        rte_eth_link_get((uint8_t)portid, &link);

        port_params.socket = socketid;
        port_params.rate = (uint64_t) link.link_speed * 1000 * 1000 / 8;
        snprintf(port_name, sizeof(port_name), "port_%d", portid);
        port_params.name = port_name;

        port = rte_sched_port_config(&port_params);
        if (port == NULL){
                rte_exit(EXIT_FAILURE, "Unable to config sched port\n");
        }

        for (subport = 0; subport < port_params.n_subports_per_port; subport ++) {
                err = rte_sched_subport_config(port, subport, &subport_params[subport]);
                if (err) {
                        rte_exit(EXIT_FAILURE, "Unable to config sched subport %u, err=%d\n",
                                        subport, err);
                }

                for (pipe = 0; pipe < port_params.n_pipes_per_subport; pipe ++) {
                        if (app_pipe_to_profile[subport][pipe] != -1) {
                                err = rte_sched_pipe_config(port, subport, pipe,
                                                app_pipe_to_profile[subport][pipe]);
                                if (err) {
                                        rte_exit(EXIT_FAILURE, "Unable to config sched pipe %u "
                                                        "for profile %d, err=%d\n", pipe,
                                                        app_pipe_to_profile[subport][pipe], err);
                                }
                        }
                }
        }

        return port;
}

static int
app_load_cfg_profile(const char *profile)
{
        if (profile == NULL)
                return 0;
        struct rte_cfgfile *file = rte_cfgfile_load(profile, 0);
        if (file == NULL)
                rte_exit(EXIT_FAILURE, "Cannot load configuration profile %s\n", profile);

        cfg_load_port(file, &port_params);
        cfg_load_subport(file, subport_params);
        cfg_load_pipe(file, pipe_profiles);

        rte_cfgfile_close(file);

        return 0;
}

int app_init(void)
{
        uint32_t i;
        char ring_name[MAX_NAME_LEN];
        char pool_name[MAX_NAME_LEN];

        if (rte_eth_dev_count() == 0)
                rte_exit(EXIT_FAILURE, "No Ethernet port - bye\n");

        /* load configuration profile */
        if (app_load_cfg_profile(cfg_profile) != 0)
                rte_exit(EXIT_FAILURE, "Invalid configuration profile\n");

        /* Initialize each active flow */
        for(i = 0; i < nb_pfc; i++) {
                uint32_t socket = rte_lcore_to_socket_id(qos_conf[i].rx_core);
                struct rte_ring *ring;

                snprintf(ring_name, MAX_NAME_LEN, "ring-%u-%u", i, qos_conf[i].rx_core);
                ring = rte_ring_lookup(ring_name);
                if (ring == NULL)
                        qos_conf[i].rx_ring = rte_ring_create(ring_name, ring_conf.ring_size,
                                socket, RING_F_SP_ENQ | RING_F_SC_DEQ);
                else
                        qos_conf[i].rx_ring = ring;

                snprintf(ring_name, MAX_NAME_LEN, "ring-%u-%u", i, qos_conf[i].tx_core);
                ring = rte_ring_lookup(ring_name);
                if (ring == NULL)
                        qos_conf[i].tx_ring = rte_ring_create(ring_name, ring_conf.ring_size,
                                socket, RING_F_SP_ENQ | RING_F_SC_DEQ);
                else
                        qos_conf[i].tx_ring = ring;


                /* create the mbuf pools for each RX Port */
                snprintf(pool_name, MAX_NAME_LEN, "mbuf_pool%u", i);
                qos_conf[i].mbuf_pool = rte_pktmbuf_pool_create(pool_name,
                        mp_size, burst_conf.rx_burst * 4, 0,
                        RTE_MBUF_DEFAULT_BUF_SIZE,
                        rte_eth_dev_socket_id(qos_conf[i].rx_port));
                if (qos_conf[i].mbuf_pool == NULL)
                        rte_exit(EXIT_FAILURE, "Cannot init mbuf pool for socket %u\n", i);

                app_init_port(qos_conf[i].rx_port, qos_conf[i].mbuf_pool);
                app_init_port(qos_conf[i].tx_port, qos_conf[i].mbuf_pool);

                qos_conf[i].sched_port = app_init_sched_port(qos_conf[i].tx_port, socket);
        }

        RTE_LOG(INFO, APP, "time stamp clock running at %" PRIu64 " Hz\n",
                         rte_get_timer_hz());

        RTE_LOG(INFO, APP, "Ring sizes: NIC RX = %u, Mempool = %d SW queue = %u,"
                         "NIC TX = %u\n", ring_conf.rx_size, mp_size, ring_conf.ring_size,
                         ring_conf.tx_size);

        RTE_LOG(INFO, APP, "Burst sizes: RX read = %hu, RX write = %hu,\n"
                                                  "             Worker read/QoS enqueue = %hu,\n"
                                                  "             QoS dequeue = %hu, Worker write = %hu\n",
                burst_conf.rx_burst, burst_conf.ring_burst, burst_conf.ring_burst,
                burst_conf.qos_dequeue, burst_conf.tx_burst);

        RTE_LOG(INFO, APP, "NIC thresholds RX (p = %hhu, h = %hhu, w = %hhu),"
                                 "TX (p = %hhu, h = %hhu, w = %hhu)\n",
                rx_thresh.pthresh, rx_thresh.hthresh, rx_thresh.wthresh,
                tx_thresh.pthresh, tx_thresh.hthresh, tx_thresh.wthresh);

        return 0;
}