examples/l2fwd-event/l2fwd_event_generic.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <stdbool.h>
   6 #include <getopt.h>
   7
   8 #include <rte_cycles.h>
   9 #include <rte_ethdev.h>
  10 #include <rte_eventdev.h>
  11 #include <rte_event_eth_rx_adapter.h>
  12 #include <rte_event_eth_tx_adapter.h>
  13 #include <rte_lcore.h>
  14 #include <rte_spinlock.h>
  15
  16 #include "l2fwd_common.h"
  17 #include "l2fwd_event.h"
  18
  19 static uint32_t
  20 l2fwd_event_device_setup_generic(struct l2fwd_resources *rsrc)
  21 {
  22         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
  23         struct rte_event_dev_config event_d_conf = {
  24                 .nb_events_limit  = 4096,
  25                 .nb_event_queue_flows = 1024,
  26                 .nb_event_port_dequeue_depth = 128,
  27                 .nb_event_port_enqueue_depth = 128
  28         };
  29         struct rte_event_dev_info dev_info;
  30         const uint8_t event_d_id = 0; /* Always use first event device only */
  31         uint32_t event_queue_cfg = 0;
  32         uint16_t ethdev_count = 0;
  33         uint16_t num_workers = 0;
  34         uint16_t port_id;
  35         int ret;
  36
  37         RTE_ETH_FOREACH_DEV(port_id) {
  38                 if ((rsrc->enabled_port_mask & (1 << port_id)) == 0)
  39                         continue;
  40                 ethdev_count++;
  41         }
  42
  43         /* Event device configurtion */
  44         rte_event_dev_info_get(event_d_id, &dev_info);
  45         evt_rsrc->disable_implicit_release = !!(dev_info.event_dev_cap &
  46                                     RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE);
  47
  48         if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES)
  49                 event_queue_cfg |= RTE_EVENT_QUEUE_CFG_ALL_TYPES;
  50
  51         /* One queue for each ethdev port + one Tx adapter Single link queue. */
  52         event_d_conf.nb_event_queues = ethdev_count + 1;
  53         if (dev_info.max_event_queues < event_d_conf.nb_event_queues)
  54                 event_d_conf.nb_event_queues = dev_info.max_event_queues;
  55
  56         if (dev_info.max_num_events < event_d_conf.nb_events_limit)
  57                 event_d_conf.nb_events_limit = dev_info.max_num_events;
  58
  59         if (dev_info.max_event_queue_flows < event_d_conf.nb_event_queue_flows)
  60                 event_d_conf.nb_event_queue_flows =
  61                                                 dev_info.max_event_queue_flows;
  62
  63         if (dev_info.max_event_port_dequeue_depth <
  64                                 event_d_conf.nb_event_port_dequeue_depth)
  65                 event_d_conf.nb_event_port_dequeue_depth =
  66                                 dev_info.max_event_port_dequeue_depth;
  67
  68         if (dev_info.max_event_port_enqueue_depth <
  69                                 event_d_conf.nb_event_port_enqueue_depth)
  70                 event_d_conf.nb_event_port_enqueue_depth =
  71                                 dev_info.max_event_port_enqueue_depth;
  72
  73         num_workers = rte_lcore_count() - rte_service_lcore_count();
  74         if (dev_info.max_event_ports < num_workers)
  75                 num_workers = dev_info.max_event_ports;
  76
  77         event_d_conf.nb_event_ports = num_workers;
  78         evt_rsrc->evp.nb_ports = num_workers;
  79         evt_rsrc->evq.nb_queues = event_d_conf.nb_event_queues;
  80
  81         evt_rsrc->has_burst = !!(dev_info.event_dev_cap &
  82                                     RTE_EVENT_DEV_CAP_BURST_MODE);
  83
  84         ret = rte_event_dev_configure(event_d_id, &event_d_conf);
  85         if (ret < 0)
  86                 rte_panic("Error in configuring event device\n");
  87
  88         evt_rsrc->event_d_id = event_d_id;
  89         return event_queue_cfg;
  90 }
  91
  92 void
  93 l2fwd_event_set_generic_ops(struct event_setup_ops *ops)
  94 {
  95         ops->event_device_setup = l2fwd_event_device_setup_generic;
  96 }