examples/l2fwd-event/l2fwd_event.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_atomic.h>
   9 #include <rte_cycles.h>
  10 #include <rte_ethdev.h>
  11 #include <rte_eventdev.h>
  12 #include <rte_event_eth_rx_adapter.h>
  13 #include <rte_event_eth_tx_adapter.h>
  14 #include <rte_lcore.h>
  15 #include <rte_malloc.h>
  16 #include <rte_spinlock.h>
  17
  18 #include "l2fwd_event.h"
  19
  20 #define L2FWD_EVENT_SINGLE      0x1
  21 #define L2FWD_EVENT_BURST       0x2
  22 #define L2FWD_EVENT_TX_DIRECT   0x4
  23 #define L2FWD_EVENT_TX_ENQ      0x8
  24 #define L2FWD_EVENT_UPDT_MAC    0x10
  25
  26 static inline int
  27 l2fwd_event_service_enable(uint32_t service_id)
  28 {
  29         uint8_t min_service_count = UINT8_MAX;
  30         uint32_t slcore_array[RTE_MAX_LCORE];
  31         unsigned int slcore = 0;
  32         uint8_t service_count;
  33         int32_t slcore_count;
  34
  35         if (!rte_service_lcore_count())
  36                 return -ENOENT;
  37
  38         slcore_count = rte_service_lcore_list(slcore_array, RTE_MAX_LCORE);
  39         if (slcore_count < 0)
  40                 return -ENOENT;
  41         /* Get the core which has least number of services running. */
  42         while (slcore_count--) {
  43                 /* Reset default mapping */
  44                 if (rte_service_map_lcore_set(service_id,
  45                                         slcore_array[slcore_count], 0) != 0)
  46                         return -ENOENT;
  47                 service_count = rte_service_lcore_count_services(
  48                                 slcore_array[slcore_count]);
  49                 if (service_count < min_service_count) {
  50                         slcore = slcore_array[slcore_count];
  51                         min_service_count = service_count;
  52                 }
  53         }
  54         if (rte_service_map_lcore_set(service_id, slcore, 1) != 0)
  55                 return -ENOENT;
  56         rte_service_lcore_start(slcore);
  57
  58         return 0;
  59 }
  60
  61 void
  62 l2fwd_event_service_setup(struct l2fwd_resources *rsrc)
  63 {
  64         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
  65         struct rte_event_dev_info evdev_info;
  66         uint32_t service_id, caps;
  67         int ret, i;
  68
  69         rte_event_dev_info_get(evt_rsrc->event_d_id, &evdev_info);
  70         if (!(evdev_info.event_dev_cap & RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED)) {
  71                 ret = rte_event_dev_service_id_get(evt_rsrc->event_d_id,
  72                                 &service_id);
  73                 if (ret != -ESRCH && ret != 0)
  74                         rte_panic("Error in starting eventdev service\n");
  75                 l2fwd_event_service_enable(service_id);
  76         }
  77
  78         for (i = 0; i < evt_rsrc->rx_adptr.nb_rx_adptr; i++) {
  79                 ret = rte_event_eth_rx_adapter_caps_get(evt_rsrc->event_d_id,
  80                                 evt_rsrc->rx_adptr.rx_adptr[i], &caps);
  81                 if (ret < 0)
  82                         rte_panic("Failed to get Rx adapter[%d] caps\n",
  83                                   evt_rsrc->rx_adptr.rx_adptr[i]);
  84                 ret = rte_event_eth_rx_adapter_service_id_get(
  85                                 evt_rsrc->event_d_id,
  86                                 &service_id);
  87                 if (ret != -ESRCH && ret != 0)
  88                         rte_panic("Error in starting Rx adapter[%d] service\n",
  89                                   evt_rsrc->rx_adptr.rx_adptr[i]);
  90                 l2fwd_event_service_enable(service_id);
  91         }
  92
  93         for (i = 0; i < evt_rsrc->tx_adptr.nb_tx_adptr; i++) {
  94                 ret = rte_event_eth_tx_adapter_caps_get(evt_rsrc->event_d_id,
  95                                 evt_rsrc->tx_adptr.tx_adptr[i], &caps);
  96                 if (ret < 0)
  97                         rte_panic("Failed to get Rx adapter[%d] caps\n",
  98                                   evt_rsrc->tx_adptr.tx_adptr[i]);
  99                 ret = rte_event_eth_tx_adapter_service_id_get(
 100                                 evt_rsrc->event_d_id,
 101                                 &service_id);
 102                 if (ret != -ESRCH && ret != 0)
 103                         rte_panic("Error in starting Rx adapter[%d] service\n",
 104                                   evt_rsrc->tx_adptr.tx_adptr[i]);
 105                 l2fwd_event_service_enable(service_id);
 106         }
 107 }
 108
 109 static void
 110 l2fwd_event_capability_setup(struct l2fwd_event_resources *evt_rsrc)
 111 {
 112         uint32_t caps = 0;
 113         uint16_t i;
 114         int ret;
 115
 116         RTE_ETH_FOREACH_DEV(i) {
 117                 ret = rte_event_eth_tx_adapter_caps_get(0, i, &caps);
 118                 if (ret)
 119                         rte_panic("Invalid capability for Tx adptr port %d\n",
 120                                   i);
 121
 122                 evt_rsrc->tx_mode_q |= !(caps &
 123                                    RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT);
 124         }
 125
 126         if (evt_rsrc->tx_mode_q)
 127                 l2fwd_event_set_generic_ops(&evt_rsrc->ops);
 128         else
 129                 l2fwd_event_set_internal_port_ops(&evt_rsrc->ops);
 130 }
 131
 132 static __rte_noinline int
 133 l2fwd_get_free_event_port(struct l2fwd_event_resources *evt_rsrc)
 134 {
 135         static int index;
 136         int port_id;
 137
 138         rte_spinlock_lock(&evt_rsrc->evp.lock);
 139         if (index >= evt_rsrc->evp.nb_ports) {
 140                 printf("No free event port is available\n");
 141                 return -1;
 142         }
 143
 144         port_id = evt_rsrc->evp.event_p_id[index];
 145         index++;
 146         rte_spinlock_unlock(&evt_rsrc->evp.lock);
 147
 148         return port_id;
 149 }
 150
 151 static  __rte_always_inline void
 152 l2fwd_event_fwd(struct l2fwd_resources *rsrc, struct rte_event *ev,
 153                 const uint8_t tx_q_id, const uint64_t timer_period,
 154                 const uint32_t flags)
 155 {
 156         struct rte_mbuf *mbuf = ev->mbuf;
 157         uint16_t dst_port;
 158
 159         rte_prefetch0(rte_pktmbuf_mtod(mbuf, void *));
 160         dst_port = rsrc->dst_ports[mbuf->port];
 161
 162         if (timer_period > 0)
 163                 __atomic_fetch_add(&rsrc->port_stats[mbuf->port].rx,
 164                                 1, __ATOMIC_RELAXED);
 165         mbuf->port = dst_port;
 166
 167         if (flags & L2FWD_EVENT_UPDT_MAC)
 168                 l2fwd_mac_updating(mbuf, dst_port, &rsrc->eth_addr[dst_port]);
 169
 170         if (flags & L2FWD_EVENT_TX_ENQ) {
 171                 ev->queue_id = tx_q_id;
 172                 ev->op = RTE_EVENT_OP_FORWARD;
 173         }
 174
 175         if (flags & L2FWD_EVENT_TX_DIRECT)
 176                 rte_event_eth_tx_adapter_txq_set(mbuf, 0);
 177
 178         if (timer_period > 0)
 179                 __atomic_fetch_add(&rsrc->port_stats[mbuf->port].tx,
 180                                 1, __ATOMIC_RELAXED);
 181 }
 182
 183 static __rte_always_inline void
 184 l2fwd_event_loop_single(struct l2fwd_resources *rsrc,
 185                         const uint32_t flags)
 186 {
 187         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
 188         const int port_id = l2fwd_get_free_event_port(evt_rsrc);
 189         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 190                                         evt_rsrc->evq.nb_queues - 1];
 191         const uint64_t timer_period = rsrc->timer_period;
 192         const uint8_t event_d_id = evt_rsrc->event_d_id;
 193         struct rte_event ev;
 194
 195         if (port_id < 0)
 196                 return;
 197
 198         printf("%s(): entering eventdev main loop on lcore %u\n", __func__,
 199                 rte_lcore_id());
 200
 201         while (!rsrc->force_quit) {
 202                 /* Read packet from eventdev */
 203                 if (!rte_event_dequeue_burst(event_d_id, port_id, &ev, 1, 0))
 204                         continue;
 205
 206                 l2fwd_event_fwd(rsrc, &ev, tx_q_id, timer_period, flags);
 207
 208                 if (flags & L2FWD_EVENT_TX_ENQ) {
 209                         while (rte_event_enqueue_burst(event_d_id, port_id,
 210                                                        &ev, 1) &&
 211                                         !rsrc->force_quit)
 212                                 ;
 213                 }
 214
 215                 if (flags & L2FWD_EVENT_TX_DIRECT) {
 216                         while (!rte_event_eth_tx_adapter_enqueue(event_d_id,
 217                                                                 port_id,
 218                                                                 &ev, 1, 0) &&
 219                                         !rsrc->force_quit)
 220                                 ;
 221                 }
 222         }
 223 }
 224
 225 static __rte_always_inline void
 226 l2fwd_event_loop_burst(struct l2fwd_resources *rsrc,
 227                        const uint32_t flags)
 228 {
 229         struct l2fwd_event_resources *evt_rsrc = rsrc->evt_rsrc;
 230         const int port_id = l2fwd_get_free_event_port(evt_rsrc);
 231         const uint8_t tx_q_id = evt_rsrc->evq.event_q_id[
 232                                         evt_rsrc->evq.nb_queues - 1];
 233         const uint64_t timer_period = rsrc->timer_period;
 234         const uint8_t event_d_id = evt_rsrc->event_d_id;
 235         const uint8_t deq_len = evt_rsrc->deq_depth;
 236         struct rte_event ev[MAX_PKT_BURST];
 237         uint16_t nb_rx, nb_tx;
 238         uint8_t i;
 239
 240         if (port_id < 0)
 241                 return;
 242
 243         printf("%s(): entering eventdev main loop on lcore %u\n", __func__,
 244                 rte_lcore_id());
 245
 246         while (!rsrc->force_quit) {
 247                 /* Read packet from eventdev */
 248                 nb_rx = rte_event_dequeue_burst(event_d_id, port_id, ev,
 249                                                 deq_len, 0);
 250                 if (nb_rx == 0)
 251                         continue;
 252
 253                 for (i = 0; i < nb_rx; i++) {
 254                         l2fwd_event_fwd(rsrc, &ev[i], tx_q_id, timer_period,
 255                                         flags);
 256                 }
 257
 258                 if (flags & L2FWD_EVENT_TX_ENQ) {
 259                         nb_tx = rte_event_enqueue_burst(event_d_id, port_id,
 260                                                         ev, nb_rx);
 261                         while (nb_tx < nb_rx && !rsrc->force_quit)
 262                                 nb_tx += rte_event_enqueue_burst(event_d_id,
 263                                                 port_id, ev + nb_tx,
 264                                                 nb_rx - nb_tx);
 265                 }
 266
 267                 if (flags & L2FWD_EVENT_TX_DIRECT) {
 268                         nb_tx = rte_event_eth_tx_adapter_enqueue(event_d_id,
 269                                                                  port_id, ev,
 270                                                                  nb_rx, 0);
 271                         while (nb_tx < nb_rx && !rsrc->force_quit)
 272                                 nb_tx += rte_event_eth_tx_adapter_enqueue(
 273                                                 event_d_id, port_id,
 274                                                 ev + nb_tx, nb_rx - nb_tx, 0);
 275                 }
 276         }
 277 }
 278
 279 static __rte_always_inline void
 280 l2fwd_event_loop(struct l2fwd_resources *rsrc,
 281                         const uint32_t flags)
 282 {
 283         if (flags & L2FWD_EVENT_SINGLE)
 284                 l2fwd_event_loop_single(rsrc, flags);
 285         if (flags & L2FWD_EVENT_BURST)
 286                 l2fwd_event_loop_burst(rsrc, flags);
 287 }
 288
 289 static void __rte_noinline
 290 l2fwd_event_main_loop_tx_d(struct l2fwd_resources *rsrc)
 291 {
 292         l2fwd_event_loop(rsrc,
 293                          L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_SINGLE);
 294 }
 295
 296 static void __rte_noinline
 297 l2fwd_event_main_loop_tx_d_brst(struct l2fwd_resources *rsrc)
 298 {
 299         l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_BURST);
 300 }
 301
 302 static void __rte_noinline
 303 l2fwd_event_main_loop_tx_q(struct l2fwd_resources *rsrc)
 304 {
 305         l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_SINGLE);
 306 }
 307
 308 static void __rte_noinline
 309 l2fwd_event_main_loop_tx_q_brst(struct l2fwd_resources *rsrc)
 310 {
 311         l2fwd_event_loop(rsrc, L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_BURST);
 312 }
 313
 314 static void __rte_noinline
 315 l2fwd_event_main_loop_tx_d_mac(struct l2fwd_resources *rsrc)
 316 {
 317         l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
 318                         L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_SINGLE);
 319 }
 320
 321 static void __rte_noinline
 322 l2fwd_event_main_loop_tx_d_brst_mac(struct l2fwd_resources *rsrc)
 323 {
 324         l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
 325                         L2FWD_EVENT_TX_DIRECT | L2FWD_EVENT_BURST);
 326 }
 327
 328 static void __rte_noinline
 329 l2fwd_event_main_loop_tx_q_mac(struct l2fwd_resources *rsrc)
 330 {
 331         l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
 332                         L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_SINGLE);
 333 }
 334
 335 static void __rte_noinline
 336 l2fwd_event_main_loop_tx_q_brst_mac(struct l2fwd_resources *rsrc)
 337 {
 338         l2fwd_event_loop(rsrc, L2FWD_EVENT_UPDT_MAC |
 339                         L2FWD_EVENT_TX_ENQ | L2FWD_EVENT_BURST);
 340 }
 341
 342 void
 343 l2fwd_event_resource_setup(struct l2fwd_resources *rsrc)
 344 {
 345         /* [MAC_UPDT][TX_MODE][BURST] */
 346         const event_loop_cb event_loop[2][2][2] = {
 347                 [0][0][0] = l2fwd_event_main_loop_tx_d,
 348                 [0][0][1] = l2fwd_event_main_loop_tx_d_brst,
 349                 [0][1][0] = l2fwd_event_main_loop_tx_q,
 350                 [0][1][1] = l2fwd_event_main_loop_tx_q_brst,
 351                 [1][0][0] = l2fwd_event_main_loop_tx_d_mac,
 352                 [1][0][1] = l2fwd_event_main_loop_tx_d_brst_mac,
 353                 [1][1][0] = l2fwd_event_main_loop_tx_q_mac,
 354                 [1][1][1] = l2fwd_event_main_loop_tx_q_brst_mac,
 355         };
 356         struct l2fwd_event_resources *evt_rsrc;
 357         uint32_t event_queue_cfg;
 358         int ret;
 359
 360         if (!rte_event_dev_count())
 361                 rte_panic("No Eventdev found\n");
 362
 363         evt_rsrc = rte_zmalloc("l2fwd_event",
 364                                  sizeof(struct l2fwd_event_resources), 0);
 365         if (evt_rsrc == NULL)
 366                 rte_panic("Failed to allocate memory\n");
 367
 368         rsrc->evt_rsrc = evt_rsrc;
 369
 370         /* Setup eventdev capability callbacks */
 371         l2fwd_event_capability_setup(evt_rsrc);
 372
 373         /* Event device configuration */
 374         event_queue_cfg = evt_rsrc->ops.event_device_setup(rsrc);
 375
 376         /* Event queue configuration */
 377         evt_rsrc->ops.event_queue_setup(rsrc, event_queue_cfg);
 378
 379         /* Event port configuration */
 380         evt_rsrc->ops.event_port_setup(rsrc);
 381
 382         /* Rx/Tx adapters configuration */
 383         evt_rsrc->ops.adapter_setup(rsrc);
 384
 385         /* Start event device */
 386         ret = rte_event_dev_start(evt_rsrc->event_d_id);
 387         if (ret < 0)
 388                 rte_panic("Error in starting eventdev\n");
 389
 390         evt_rsrc->ops.l2fwd_event_loop = event_loop
 391                                         [rsrc->mac_updating]
 392                                         [evt_rsrc->tx_mode_q]
 393                                         [evt_rsrc->has_burst];
 394 }