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 static void
  93 l2fwd_event_port_setup_generic(struct l2fwd_resources *rsrc)
  94 {
  95         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
  96         uint8_t event_d_id = evt_rsrc->event_d_id;
  97         struct rte_event_port_conf event_p_conf = {
  98                 .dequeue_depth = 32,
  99                 .enqueue_depth = 32,
 100                 .new_event_threshold = 4096
 101         };
 102         struct rte_event_port_conf def_p_conf;
 103         uint8_t event_p_id;
 104         int32_t ret;
 105
 106         evt_rsrc->evp.event_p_id = (uint8_t *)malloc(sizeof(uint8_t) *
 107                                         evt_rsrc->evp.nb_ports);
 108         if (!evt_rsrc->evp.event_p_id)
 109                 rte_panic("No space is available\n");
 110
 111         memset(&def_p_conf, 0, sizeof(struct rte_event_port_conf));
 112         rte_event_port_default_conf_get(event_d_id, 0, &def_p_conf);
 113
 114         if (def_p_conf.new_event_threshold < event_p_conf.new_event_threshold)
 115                 event_p_conf.new_event_threshold =
 116                         def_p_conf.new_event_threshold;
 117
 118         if (def_p_conf.dequeue_depth < event_p_conf.dequeue_depth)
 119                 event_p_conf.dequeue_depth = def_p_conf.dequeue_depth;
 120
 121         if (def_p_conf.enqueue_depth < event_p_conf.enqueue_depth)
 122                 event_p_conf.enqueue_depth = def_p_conf.enqueue_depth;
 123
 124         event_p_conf.disable_implicit_release =
 125                 evt_rsrc->disable_implicit_release;
 126         evt_rsrc->deq_depth = def_p_conf.dequeue_depth;
 127
 128         for (event_p_id = 0; event_p_id < evt_rsrc->evp.nb_ports;
 129                                                                 event_p_id++) {
 130                 ret = rte_event_port_setup(event_d_id, event_p_id,
 131                                            &event_p_conf);
 132                 if (ret < 0)
 133                         rte_panic("Error in configuring event port %d\n",
 134                                   event_p_id);
 135
 136                 ret = rte_event_port_link(event_d_id, event_p_id,
 137                                           evt_rsrc->evq.event_q_id,
 138                                           NULL,
 139                                           evt_rsrc->evq.nb_queues - 1);
 140                 if (ret != (evt_rsrc->evq.nb_queues - 1))
 141                         rte_panic("Error in linking event port %d to queues\n",
 142                                   event_p_id);
 143                 evt_rsrc->evp.event_p_id[event_p_id] = event_p_id;
 144         }
 145         /* init spinlock */
 146         rte_spinlock_init(&evt_rsrc->evp.lock);
 147
 148         evt_rsrc->def_p_conf = event_p_conf;
 149 }
 150
 151 static void
 152 l2fwd_event_queue_setup_generic(struct l2fwd_resources *rsrc,
 153                           uint32_t event_queue_cfg)
 154 {
 155         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
 156         uint8_t event_d_id = evt_rsrc->event_d_id;
 157         struct rte_event_queue_conf event_q_conf = {
 158                 .nb_atomic_flows = 1024,
 159                 .nb_atomic_order_sequences = 1024,
 160                 .event_queue_cfg = event_queue_cfg,
 161                 .priority = RTE_EVENT_DEV_PRIORITY_NORMAL
 162         };
 163         struct rte_event_queue_conf def_q_conf;
 164         uint8_t event_q_id;
 165         int32_t ret;
 166
 167         event_q_conf.schedule_type = rsrc->sched_type;
 168         evt_rsrc->evq.event_q_id = (uint8_t *)malloc(sizeof(uint8_t) *
 169                                         evt_rsrc->evq.nb_queues);
 170         if (!evt_rsrc->evq.event_q_id)
 171                 rte_panic("Memory allocation failure\n");
 172
 173         rte_event_queue_default_conf_get(event_d_id, 0, &def_q_conf);
 174         if (def_q_conf.nb_atomic_flows < event_q_conf.nb_atomic_flows)
 175                 event_q_conf.nb_atomic_flows = def_q_conf.nb_atomic_flows;
 176
 177         for (event_q_id = 0; event_q_id < (evt_rsrc->evq.nb_queues - 1);
 178                                                                 event_q_id++) {
 179                 ret = rte_event_queue_setup(event_d_id, event_q_id,
 180                                             &event_q_conf);
 181                 if (ret < 0)
 182                         rte_panic("Error in configuring event queue\n");
 183                 evt_rsrc->evq.event_q_id[event_q_id] = event_q_id;
 184         }
 185
 186         event_q_conf.event_queue_cfg |= RTE_EVENT_QUEUE_CFG_SINGLE_LINK;
 187         event_q_conf.priority = RTE_EVENT_DEV_PRIORITY_HIGHEST,
 188         ret = rte_event_queue_setup(event_d_id, event_q_id, &event_q_conf);
 189         if (ret < 0)
 190                 rte_panic("Error in configuring event queue for Tx adapter\n");
 191         evt_rsrc->evq.event_q_id[event_q_id] = event_q_id;
 192 }
 193
 194 void
 195 l2fwd_event_set_generic_ops(struct event_setup_ops *ops)
 196 {
 197         ops->event_device_setup = l2fwd_event_device_setup_generic;
 198         ops->event_queue_setup = l2fwd_event_queue_setup_generic;
 199         ops->event_port_setup = l2fwd_event_port_setup_generic;
 200 }