examples/l2fwd-event/l2fwd_event_generic.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(C) 2019 Marvell International Ltd.
 */

#include <stdbool.h>
#include <getopt.h>

#include <rte_cycles.h>
#include <rte_ethdev.h>
#include <rte_eventdev.h>
#include <rte_event_eth_rx_adapter.h>
#include <rte_event_eth_tx_adapter.h>
#include <rte_lcore.h>
#include <rte_spinlock.h>

#include "l2fwd_common.h"
#include "l2fwd_event.h"

static uint32_t
l2fwd_event_device_setup_generic(struct l2fwd_resources *rsrc)
{
    struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
    /* Configures event device as per below configuration. 8< */
    struct rte_event_dev_config event_d_conf = {
        .nb_events_limit  = 4096,
        .nb_event_queue_flows = 1024,
        .nb_event_port_dequeue_depth = 128,
        .nb_event_port_enqueue_depth = 128
    };
    /* >8 End of configuration event device as per below configuration. */
    struct rte_event_dev_info dev_info;
    const uint8_t event_d_id = 0; /* Always use first event device only */
    uint32_t event_queue_cfg = 0;
    uint16_t ethdev_count = 0;
    uint16_t num_workers = 0;
    uint16_t port_id;
    int ret;

    RTE_ETH_FOREACH_DEV(port_id) {
        if ((rsrc->enabled_port_mask & (1 << port_id)) == 0)
            continue;
        ethdev_count++;
    }

    /* Event device configuration */
    rte_event_dev_info_get(event_d_id, &dev_info);

    /* Enable implicit release */
    if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE)
        evt_rsrc->disable_implicit_release = 0;

    if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES)
        event_queue_cfg |= RTE_EVENT_QUEUE_CFG_ALL_TYPES;

    /* One queue for each ethdev port + one Tx adapter Single link queue. */
    event_d_conf.nb_event_queues = ethdev_count + 1;
    if (dev_info.max_event_queues < event_d_conf.nb_event_queues)
        event_d_conf.nb_event_queues = dev_info.max_event_queues;

    if (dev_info.max_num_events < event_d_conf.nb_events_limit)
        event_d_conf.nb_events_limit = dev_info.max_num_events;

    if (dev_info.max_event_queue_flows < event_d_conf.nb_event_queue_flows)
        event_d_conf.nb_event_queue_flows =
                        dev_info.max_event_queue_flows;

    if (dev_info.max_event_port_dequeue_depth <
                event_d_conf.nb_event_port_dequeue_depth)
        event_d_conf.nb_event_port_dequeue_depth =
                dev_info.max_event_port_dequeue_depth;

    if (dev_info.max_event_port_enqueue_depth <
                event_d_conf.nb_event_port_enqueue_depth)
        event_d_conf.nb_event_port_enqueue_depth =
                dev_info.max_event_port_enqueue_depth;

    /* Ignore Main core and service cores. */
    num_workers = rte_lcore_count() - 1 - rte_service_lcore_count();
    if (dev_info.max_event_ports < num_workers)
        num_workers = dev_info.max_event_ports;

    event_d_conf.nb_event_ports = num_workers;
    evt_rsrc->evp.nb_ports = num_workers;
    evt_rsrc->evq.nb_queues = event_d_conf.nb_event_queues;

    evt_rsrc->has_burst = !!(dev_info.event_dev_cap &
                    RTE_EVENT_DEV_CAP_BURST_MODE);

    if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_EVENT_PRESCHEDULE)
        event_d_conf.preschedule_type = RTE_EVENT_PRESCHEDULE;

    if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_EVENT_PRESCHEDULE_ADAPTIVE)
        event_d_conf.preschedule_type = RTE_EVENT_PRESCHEDULE_ADAPTIVE;

    ret = rte_event_dev_configure(event_d_id, &event_d_conf);
    if (ret < 0)
        rte_panic("Error in configuring event device\n");

    evt_rsrc->event_d_id = event_d_id;
    return event_queue_cfg;
}

static void
l2fwd_event_port_setup_generic(struct l2fwd_resources *rsrc)
{
    struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
    uint8_t event_d_id = evt_rsrc->event_d_id;
    /* Event port initialization. 8< */
    struct rte_event_port_conf event_p_conf = {
        .dequeue_depth = 32,
        .enqueue_depth = 32,
        .new_event_threshold = 4096
    };
    struct rte_event_port_conf def_p_conf;
    uint8_t event_p_id;
    int32_t ret;

    evt_rsrc->evp.event_p_id = (uint8_t *)malloc(sizeof(uint8_t) *
                    evt_rsrc->evp.nb_ports);
    if (!evt_rsrc->evp.event_p_id)
        rte_panic("No space is available\n");

    memset(&def_p_conf, 0, sizeof(struct rte_event_port_conf));
    ret = rte_event_port_default_conf_get(event_d_id, 0, &def_p_conf);
    if (ret < 0)
        rte_panic("Error to get default configuration of event port\n");

    if (def_p_conf.new_event_threshold < event_p_conf.new_event_threshold)
        event_p_conf.new_event_threshold =
            def_p_conf.new_event_threshold;

    if (def_p_conf.dequeue_depth < event_p_conf.dequeue_depth)
        event_p_conf.dequeue_depth = def_p_conf.dequeue_depth;

    if (def_p_conf.enqueue_depth < event_p_conf.enqueue_depth)
        event_p_conf.enqueue_depth = def_p_conf.enqueue_depth;

    event_p_conf.event_port_cfg = 0;
    if (evt_rsrc->disable_implicit_release)
        event_p_conf.event_port_cfg |=
            RTE_EVENT_PORT_CFG_DISABLE_IMPL_REL;

    evt_rsrc->deq_depth = def_p_conf.dequeue_depth;

    for (event_p_id = 0; event_p_id < evt_rsrc->evp.nb_ports;
                                event_p_id++) {
        ret = rte_event_port_setup(event_d_id, event_p_id,
                       &event_p_conf);
        if (ret < 0)
            rte_panic("Error in configuring event port %d\n",
                  event_p_id);

        ret = rte_event_port_link(event_d_id, event_p_id,
                      evt_rsrc->evq.event_q_id,
                      NULL,
                      evt_rsrc->evq.nb_queues - 1);
        if (ret != (evt_rsrc->evq.nb_queues - 1))
            rte_panic("Error in linking event port %d to queues\n",
                  event_p_id);
        evt_rsrc->evp.event_p_id[event_p_id] = event_p_id;
        /* >8 End of event port initialization. */
    }
    /* init spinlock */
    rte_spinlock_init(&evt_rsrc->evp.lock);

    evt_rsrc->def_p_conf = event_p_conf;
}

static void
l2fwd_event_queue_setup_generic(struct l2fwd_resources *rsrc,
              uint32_t event_queue_cfg)
{
    struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
    uint8_t event_d_id = evt_rsrc->event_d_id;
    /* Event queue initialization. 8< */
    struct rte_event_queue_conf event_q_conf = {
        .nb_atomic_flows = 1024,
        .nb_atomic_order_sequences = 1024,
        .event_queue_cfg = event_queue_cfg,
        .priority = RTE_EVENT_DEV_PRIORITY_NORMAL
    };
    struct rte_event_queue_conf def_q_conf;
    uint8_t event_q_id;
    int32_t ret;

    event_q_conf.schedule_type = rsrc->sched_type;
    evt_rsrc->evq.event_q_id = (uint8_t *)malloc(sizeof(uint8_t) *
                    evt_rsrc->evq.nb_queues);
    if (!evt_rsrc->evq.event_q_id)
        rte_panic("Memory allocation failure\n");

    ret = rte_event_queue_default_conf_get(event_d_id, 0, &def_q_conf);
    if (ret < 0)
        rte_panic("Error to get default config of event queue\n");
    /* >8 End of event queue initialization. */

    if (def_q_conf.nb_atomic_flows < event_q_conf.nb_atomic_flows)
        event_q_conf.nb_atomic_flows = def_q_conf.nb_atomic_flows;

    for (event_q_id = 0; event_q_id < (evt_rsrc->evq.nb_queues - 1);
                                event_q_id++) {
        ret = rte_event_queue_setup(event_d_id, event_q_id,
                        &event_q_conf);
        if (ret < 0)
            rte_panic("Error in configuring event queue\n");
        evt_rsrc->evq.event_q_id[event_q_id] = event_q_id;
    }

    event_q_conf.event_queue_cfg |= RTE_EVENT_QUEUE_CFG_SINGLE_LINK;
    event_q_conf.priority = RTE_EVENT_DEV_PRIORITY_HIGHEST,
    ret = rte_event_queue_setup(event_d_id, event_q_id, &event_q_conf);
    if (ret < 0)
        rte_panic("Error in configuring event queue for Tx adapter\n");
    evt_rsrc->evq.event_q_id[event_q_id] = event_q_id;
}

static void
l2fwd_rx_tx_adapter_setup_generic(struct l2fwd_resources *rsrc)
{
    struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
    struct rte_event_eth_rx_adapter_queue_conf eth_q_conf;
    uint8_t event_d_id = evt_rsrc->event_d_id;
    uint8_t rx_adptr_id = 0;
    uint8_t tx_adptr_id = 0;
    uint8_t tx_port_id = 0;
    uint16_t port_id;
    uint32_t service_id;
    int32_t ret, i = 0;

    memset(&eth_q_conf, 0, sizeof(eth_q_conf));
    eth_q_conf.ev.priority = RTE_EVENT_DEV_PRIORITY_NORMAL;

    /* Rx adapter setup */
    evt_rsrc->rx_adptr.nb_rx_adptr = 1;
    evt_rsrc->rx_adptr.rx_adptr = (uint8_t *)malloc(sizeof(uint8_t) *
                    evt_rsrc->rx_adptr.nb_rx_adptr);
    if (!evt_rsrc->rx_adptr.rx_adptr) {
        free(evt_rsrc->evp.event_p_id);
        free(evt_rsrc->evq.event_q_id);
        rte_panic("Failed to allocate memery for Rx adapter\n");
    }

    ret = rte_event_eth_rx_adapter_create(rx_adptr_id, event_d_id,
                          &evt_rsrc->def_p_conf);
    if (ret)
        rte_panic("Failed to create rx adapter\n");

    /* Configure user requested sched type */
    eth_q_conf.ev.sched_type = rsrc->sched_type;
    RTE_ETH_FOREACH_DEV(port_id) {
        if ((rsrc->enabled_port_mask & (1 << port_id)) == 0)
            continue;
        eth_q_conf.ev.queue_id = evt_rsrc->evq.event_q_id[i];
        if (rsrc->evt_vec.enabled) {
            uint32_t cap;

            if (rte_event_eth_rx_adapter_caps_get(event_d_id,
                                  port_id, &cap))
                rte_panic(
                    "Failed to get event rx adapter capability");

            if (cap & RTE_EVENT_ETH_RX_ADAPTER_CAP_EVENT_VECTOR) {
                eth_q_conf.vector_sz = rsrc->evt_vec.size;
                eth_q_conf.vector_timeout_ns =
                    rsrc->evt_vec.timeout_ns;
                eth_q_conf.vector_mp = rsrc->evt_vec_pool;
                eth_q_conf.rx_queue_flags |=
                RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR;
            } else {
                rte_panic(
                    "Rx adapter doesn't support event vector");
            }
        }

        ret = rte_event_eth_rx_adapter_queue_add(rx_adptr_id, port_id,
                             -1, &eth_q_conf);
        if (ret)
            rte_panic("Failed to add queues to Rx adapter\n");
        if (i < evt_rsrc->evq.nb_queues)
            i++;
    }

    ret = rte_event_eth_rx_adapter_service_id_get(rx_adptr_id, &service_id);
    if (ret != -ESRCH && ret != 0)
        rte_panic("Error getting the service ID for rx adptr\n");

    rte_service_runstate_set(service_id, 1);
    rte_service_set_runstate_mapped_check(service_id, 0);
    evt_rsrc->rx_adptr.service_id = service_id;

    ret = rte_event_eth_rx_adapter_start(rx_adptr_id);
    if (ret)
        rte_panic("Rx adapter[%d] start Failed\n", rx_adptr_id);

    evt_rsrc->rx_adptr.rx_adptr[0] = rx_adptr_id;

    /* Tx adapter setup */
    evt_rsrc->tx_adptr.nb_tx_adptr = 1;
    evt_rsrc->tx_adptr.tx_adptr = (uint8_t *)malloc(sizeof(uint8_t) *
                    evt_rsrc->tx_adptr.nb_tx_adptr);
    if (!evt_rsrc->tx_adptr.tx_adptr) {
        free(evt_rsrc->rx_adptr.rx_adptr);
        free(evt_rsrc->evp.event_p_id);
        free(evt_rsrc->evq.event_q_id);
        rte_panic("Failed to allocate memery for Rx adapter\n");
    }

    ret = rte_event_eth_tx_adapter_create(tx_adptr_id, event_d_id,
                          &evt_rsrc->def_p_conf);
    if (ret)
        rte_panic("Failed to create tx adapter\n");

    RTE_ETH_FOREACH_DEV(port_id) {
        if ((rsrc->enabled_port_mask & (1 << port_id)) == 0)
            continue;
        ret = rte_event_eth_tx_adapter_queue_add(tx_adptr_id, port_id,
                             -1);
        if (ret)
            rte_panic("Failed to add queues to Tx adapter\n");
    }

    ret = rte_event_eth_tx_adapter_service_id_get(tx_adptr_id, &service_id);
    if (ret != -ESRCH && ret != 0)
        rte_panic("Failed to get Tx adapter service ID\n");

    rte_service_runstate_set(service_id, 1);
    rte_service_set_runstate_mapped_check(service_id, 0);
    evt_rsrc->tx_adptr.service_id = service_id;

    /* Extra port created. 8< */
    ret = rte_event_eth_tx_adapter_event_port_get(tx_adptr_id, &tx_port_id);
    if (ret)
        rte_panic("Failed to get Tx adapter port id: %d\n", ret);

    ret = rte_event_port_link(event_d_id, tx_port_id,
                  &evt_rsrc->evq.event_q_id[
                    evt_rsrc->evq.nb_queues - 1],
                  NULL, 1);
    if (ret != 1)
        rte_panic("Unable to link Tx adapter port to Tx queue:err=%d\n",
             ret);
    /* >8 End of extra port created. */

    ret = rte_event_eth_tx_adapter_start(tx_adptr_id);
    if (ret)
        rte_panic("Tx adapter[%d] start Failed\n", tx_adptr_id);

    evt_rsrc->tx_adptr.tx_adptr[0] = tx_adptr_id;
}

void
l2fwd_event_set_generic_ops(struct event_setup_ops *ops)
{
    ops->event_device_setup = l2fwd_event_device_setup_generic;
    ops->event_queue_setup = l2fwd_event_queue_setup_generic;
    ops->event_port_setup = l2fwd_event_port_setup_generic;
    ops->adapter_setup = l2fwd_rx_tx_adapter_setup_generic;
}