examples/l3fwd/l3fwd_event_internal_port.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <stdbool.h>
   6
   7 #include "l3fwd.h"
   8 #include "l3fwd_event.h"
   9
  10 static uint32_t
  11 l3fwd_event_device_setup_internal_port(void)
  12 {
  13         struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
  14         struct rte_event_dev_config event_d_conf = {
  15                 .nb_events_limit  = 4096,
  16                 .nb_event_queue_flows = 1024,
  17                 .nb_event_port_dequeue_depth = 128,
  18                 .nb_event_port_enqueue_depth = 128
  19         };
  20         struct rte_event_dev_info dev_info;
  21         const uint8_t event_d_id = 0; /* Always use first event device only */
  22         uint32_t event_queue_cfg = 0;
  23         uint16_t ethdev_count = 0;
  24         uint16_t num_workers = 0;
  25         uint16_t port_id;
  26         int ret;
  27
  28         RTE_ETH_FOREACH_DEV(port_id) {
  29                 if ((evt_rsrc->port_mask & (1 << port_id)) == 0)
  30                         continue;
  31                 ethdev_count++;
  32         }
  33
  34         /* Event device configuration */
  35         rte_event_dev_info_get(event_d_id, &dev_info);
  36
  37         /* Enable implicit release */
  38         if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE)
  39                 evt_rsrc->disable_implicit_release = 0;
  40
  41         if (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES)
  42                 event_queue_cfg |= RTE_EVENT_QUEUE_CFG_ALL_TYPES;
  43
  44         event_d_conf.nb_event_queues = ethdev_count;
  45         if (dev_info.max_event_queues < event_d_conf.nb_event_queues)
  46                 event_d_conf.nb_event_queues = dev_info.max_event_queues;
  47
  48         if (dev_info.max_num_events < event_d_conf.nb_events_limit)
  49                 event_d_conf.nb_events_limit = dev_info.max_num_events;
  50
  51         if (dev_info.max_event_queue_flows < event_d_conf.nb_event_queue_flows)
  52                 event_d_conf.nb_event_queue_flows =
  53                                                 dev_info.max_event_queue_flows;
  54
  55         if (dev_info.max_event_port_dequeue_depth <
  56                                 event_d_conf.nb_event_port_dequeue_depth)
  57                 event_d_conf.nb_event_port_dequeue_depth =
  58                                 dev_info.max_event_port_dequeue_depth;
  59
  60         if (dev_info.max_event_port_enqueue_depth <
  61                                 event_d_conf.nb_event_port_enqueue_depth)
  62                 event_d_conf.nb_event_port_enqueue_depth =
  63                                 dev_info.max_event_port_enqueue_depth;
  64
  65         num_workers = rte_lcore_count();
  66         if (dev_info.max_event_ports < num_workers)
  67                 num_workers = dev_info.max_event_ports;
  68
  69         event_d_conf.nb_event_ports = num_workers;
  70         evt_rsrc->evp.nb_ports = num_workers;
  71         evt_rsrc->evq.nb_queues = event_d_conf.nb_event_queues;
  72         evt_rsrc->has_burst = !!(dev_info.event_dev_cap &
  73                                     RTE_EVENT_DEV_CAP_BURST_MODE);
  74
  75         ret = rte_event_dev_configure(event_d_id, &event_d_conf);
  76         if (ret < 0)
  77                 rte_panic("Error in configuring event device\n");
  78
  79         evt_rsrc->event_d_id = event_d_id;
  80         return event_queue_cfg;
  81 }
  82
  83
  84 void
  85 l3fwd_event_set_internal_port_ops(struct l3fwd_event_setup_ops *ops)
  86 {
  87         ops->event_device_setup = l3fwd_event_device_setup_internal_port;
  88 }