vnet/vnet/devices/dpdk/init.c

   1 /*
   2  * Copyright (c) 2015 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15 #include <vnet/vnet.h>
  16 #include <vppinfra/vec.h>
  17 #include <vppinfra/error.h>
  18 #include <vppinfra/format.h>
  19 #include <vppinfra/bitmap.h>
  20
  21 #include <vnet/ethernet/ethernet.h>
  22 #include <vnet/devices/dpdk/dpdk.h>
  23 #include <vlib/unix/physmem.h>
  24 #include <vlib/pci/pci.h>
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <sys/stat.h>
  30 #include <sys/mount.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33
  34 #include "dpdk_priv.h"
  35
  36 dpdk_main_t dpdk_main;
  37
  38 /* force linker to link functions used by vlib and declared weak */
  39 void *vlib_weakly_linked_functions[] = {
  40   &rte_pktmbuf_init,
  41   &rte_pktmbuf_pool_init,
  42 };
  43
  44 #define LINK_STATE_ELOGS        0
  45
  46 #define DEFAULT_HUGE_DIR "/run/vpp/hugepages"
  47 #define VPP_RUN_DIR "/run/vpp"
  48
  49 /* Port configuration, mildly modified Intel app values */
  50
  51 static struct rte_eth_conf port_conf_template = {
  52   .rxmode = {
  53              .split_hdr_size = 0,
  54              .header_split = 0,         /**< Header Split disabled */
  55              .hw_ip_checksum = 0,       /**< IP checksum offload disabled */
  56              .hw_vlan_filter = 0,       /**< VLAN filtering disabled */
  57              .hw_strip_crc = 0,         /**< CRC stripped by hardware */
  58              },
  59   .txmode = {
  60              .mq_mode = ETH_MQ_TX_NONE,
  61              },
  62 };
  63
  64 clib_error_t *
  65 dpdk_port_setup (dpdk_main_t * dm, dpdk_device_t * xd)
  66 {
  67   vlib_main_t *vm = vlib_get_main ();
  68   vlib_buffer_main_t *bm = vm->buffer_main;
  69   int rv;
  70   int j;
  71
  72   ASSERT (os_get_cpu_number () == 0);
  73
  74   if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
  75     {
  76       vnet_hw_interface_set_flags (dm->vnet_main, xd->vlib_hw_if_index, 0);
  77       rte_eth_dev_stop (xd->device_index);
  78     }
  79
  80   rv = rte_eth_dev_configure (xd->device_index, xd->rx_q_used,
  81                               xd->tx_q_used, &xd->port_conf);
  82
  83   if (rv < 0)
  84     return clib_error_return (0, "rte_eth_dev_configure[%d]: err %d",
  85                               xd->device_index, rv);
  86
  87   /* Set up one TX-queue per worker thread */
  88   for (j = 0; j < xd->tx_q_used; j++)
  89     {
  90       rv = rte_eth_tx_queue_setup (xd->device_index, j, xd->nb_tx_desc,
  91                                    xd->cpu_socket, &xd->tx_conf);
  92
  93       /* retry with any other CPU socket */
  94       if (rv < 0)
  95         rv = rte_eth_tx_queue_setup (xd->device_index, j, xd->nb_tx_desc,
  96                                      SOCKET_ID_ANY, &xd->tx_conf);
  97       if (rv < 0)
  98         break;
  99     }
 100
 101   if (rv < 0)
 102     return clib_error_return (0, "rte_eth_tx_queue_setup[%d]: err %d",
 103                               xd->device_index, rv);
 104
 105   for (j = 0; j < xd->rx_q_used; j++)
 106     {
 107
 108       rv = rte_eth_rx_queue_setup (xd->device_index, j, xd->nb_rx_desc,
 109                                    xd->cpu_socket, 0,
 110                                    bm->
 111                                    pktmbuf_pools[xd->cpu_socket_id_by_queue
 112                                                  [j]]);
 113
 114       /* retry with any other CPU socket */
 115       if (rv < 0)
 116         rv = rte_eth_rx_queue_setup (xd->device_index, j, xd->nb_rx_desc,
 117                                      SOCKET_ID_ANY, 0,
 118                                      bm->
 119                                      pktmbuf_pools[xd->cpu_socket_id_by_queue
 120                                                    [j]]);
 121       if (rv < 0)
 122         return clib_error_return (0, "rte_eth_rx_queue_setup[%d]: err %d",
 123                                   xd->device_index, rv);
 124     }
 125
 126   if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
 127     {
 128       int rv;
 129       rv = rte_eth_dev_start (xd->device_index);
 130       if (rv < 0)
 131         clib_warning ("rte_eth_dev_start %d returned %d",
 132                       xd->device_index, rv);
 133     }
 134   return 0;
 135 }
 136
 137 static u32
 138 dpdk_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags)
 139 {
 140   dpdk_main_t *dm = &dpdk_main;
 141   dpdk_device_t *xd = vec_elt_at_index (dm->devices, hi->dev_instance);
 142   u32 old = 0;
 143
 144   if (ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC (flags))
 145     {
 146       old = (xd->flags & DPDK_DEVICE_FLAG_PROMISC) != 0;
 147
 148       if (flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL)
 149         xd->flags |= DPDK_DEVICE_FLAG_PROMISC;
 150       else
 151         xd->flags &= ~DPDK_DEVICE_FLAG_PROMISC;
 152
 153       if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
 154         {
 155           if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
 156             rte_eth_promiscuous_enable (xd->device_index);
 157           else
 158             rte_eth_promiscuous_disable (xd->device_index);
 159         }
 160     }
 161   else if (ETHERNET_INTERFACE_FLAG_CONFIG_MTU (flags))
 162     {
 163       /*
 164        * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
 165        *            driver to dynamically change the mtu.  If/when the
 166        *            VIC firmware gets fixed, then this should be removed.
 167        */
 168       if (xd->pmd == VNET_DPDK_PMD_ENIC)
 169         {
 170           struct rte_eth_dev_info dev_info;
 171
 172           /*
 173            * Restore mtu to what has been set by CIMC in the firmware cfg.
 174            */
 175           rte_eth_dev_info_get (xd->device_index, &dev_info);
 176           hi->max_packet_bytes = dev_info.max_rx_pktlen;
 177
 178           vlib_cli_output (vlib_get_main (),
 179                            "Cisco VIC mtu can only be changed "
 180                            "using CIMC then rebooting the server!");
 181         }
 182       else
 183         {
 184           int rv;
 185
 186           xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
 187
 188           if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
 189             rte_eth_dev_stop (xd->device_index);
 190
 191           rv = rte_eth_dev_configure
 192             (xd->device_index, xd->rx_q_used, xd->tx_q_used, &xd->port_conf);
 193
 194           if (rv < 0)
 195             vlib_cli_output (vlib_get_main (),
 196                              "rte_eth_dev_configure[%d]: err %d",
 197                              xd->device_index, rv);
 198
 199           rte_eth_dev_set_mtu (xd->device_index, hi->max_packet_bytes);
 200
 201           if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
 202             {
 203               int rv = rte_eth_dev_start (xd->device_index);
 204               if (rv < 0)
 205                 clib_warning ("rte_eth_dev_start %d returned %d",
 206                               xd->device_index, rv);
 207             }
 208         }
 209     }
 210   return old;
 211 }
 212
 213 void
 214 dpdk_device_lock_init (dpdk_device_t * xd)
 215 {
 216   int q;
 217   vec_validate (xd->lockp, xd->tx_q_used - 1);
 218   for (q = 0; q < xd->tx_q_used; q++)
 219     {
 220       xd->lockp[q] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
 221                                              CLIB_CACHE_LINE_BYTES);
 222       memset ((void *) xd->lockp[q], 0, CLIB_CACHE_LINE_BYTES);
 223     }
 224   xd->need_txlock = 1;
 225 }
 226
 227 void
 228 dpdk_device_lock_free (dpdk_device_t * xd)
 229 {
 230   int q;
 231
 232   for (q = 0; q < vec_len (xd->lockp); q++)
 233     clib_mem_free ((void *) xd->lockp[q]);
 234   vec_free (xd->lockp);
 235   xd->lockp = 0;
 236   xd->need_txlock = 0;
 237 }
 238
 239 static clib_error_t *
 240 dpdk_lib_init (dpdk_main_t * dm)
 241 {
 242   u32 nports;
 243   u32 nb_desc = 0;
 244   int i;
 245   clib_error_t *error;
 246   vlib_main_t *vm = vlib_get_main ();
 247   vlib_thread_main_t *tm = vlib_get_thread_main ();
 248   vlib_node_runtime_t *rt;
 249   vnet_sw_interface_t *sw;
 250   vnet_hw_interface_t *hi;
 251   dpdk_device_t *xd;
 252   vlib_pci_addr_t last_pci_addr;
 253   u32 last_pci_addr_port = 0;
 254   vlib_thread_registration_t *tr;
 255   uword *p;
 256
 257   u32 next_cpu = 0;
 258   u8 af_packet_port_id = 0;
 259   last_pci_addr.as_u32 = ~0;
 260
 261   dm->input_cpu_first_index = 0;
 262   dm->input_cpu_count = 1;
 263
 264   rt = vlib_node_get_runtime (vm, dpdk_input_node.index);
 265   rt->function = dpdk_input_multiarch_select ();
 266
 267   /* find out which cpus will be used for input */
 268   p = hash_get_mem (tm->thread_registrations_by_name, "workers");
 269   tr = p ? (vlib_thread_registration_t *) p[0] : 0;
 270
 271   if (tr && tr->count > 0)
 272     {
 273       dm->input_cpu_first_index = tr->first_index;
 274       dm->input_cpu_count = tr->count;
 275     }
 276
 277   vec_validate_aligned (dm->devices_by_cpu, tm->n_vlib_mains - 1,
 278                         CLIB_CACHE_LINE_BYTES);
 279
 280   vec_validate_aligned (dm->workers, tm->n_vlib_mains - 1,
 281                         CLIB_CACHE_LINE_BYTES);
 282
 283   nports = rte_eth_dev_count ();
 284   if (nports < 1)
 285     {
 286       clib_warning ("DPDK drivers found no ports...");
 287     }
 288
 289   if (CLIB_DEBUG > 0)
 290     clib_warning ("DPDK drivers found %d ports...", nports);
 291
 292   /*
 293    * All buffers are all allocated from the same rte_mempool.
 294    * Thus they all have the same number of data bytes.
 295    */
 296   dm->vlib_buffer_free_list_index =
 297     vlib_buffer_get_or_create_free_list (vm,
 298                                          VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES,
 299                                          "dpdk rx");
 300
 301   if (dm->conf->enable_tcp_udp_checksum)
 302     dm->buffer_flags_template &= ~(IP_BUFFER_L4_CHECKSUM_CORRECT
 303                                    | IP_BUFFER_L4_CHECKSUM_COMPUTED);
 304
 305   for (i = 0; i < nports; i++)
 306     {
 307       u8 addr[6];
 308       u8 vlan_strip = 0;
 309       int j;
 310       struct rte_eth_dev_info dev_info;
 311       clib_error_t *rv;
 312       struct rte_eth_link l;
 313       dpdk_device_config_t *devconf = 0;
 314       vlib_pci_addr_t pci_addr;
 315       uword *p = 0;
 316
 317       rte_eth_dev_info_get (i, &dev_info);
 318       if (dev_info.pci_dev)     /* bonded interface has no pci info */
 319         {
 320           pci_addr.domain = dev_info.pci_dev->addr.domain;
 321           pci_addr.bus = dev_info.pci_dev->addr.bus;
 322           pci_addr.slot = dev_info.pci_dev->addr.devid;
 323           pci_addr.function = dev_info.pci_dev->addr.function;
 324           p =
 325             hash_get (dm->conf->device_config_index_by_pci_addr,
 326                       pci_addr.as_u32);
 327         }
 328
 329       if (p)
 330         devconf = pool_elt_at_index (dm->conf->dev_confs, p[0]);
 331       else
 332         devconf = &dm->conf->default_devconf;
 333
 334       /* Create vnet interface */
 335       vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
 336       xd->nb_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
 337       xd->nb_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
 338       xd->cpu_socket = (i8) rte_eth_dev_socket_id (i);
 339
 340       /* Handle interface naming for devices with multiple ports sharing same PCI ID */
 341       if (dev_info.pci_dev)
 342         {
 343           struct rte_eth_dev_info di = { 0 };
 344           rte_eth_dev_info_get (i + 1, &di);
 345           if (di.pci_dev && pci_addr.as_u32 != last_pci_addr.as_u32 &&
 346               memcmp (&dev_info.pci_dev->addr, &di.pci_dev->addr,
 347                       sizeof (struct rte_pci_addr)) == 0)
 348             {
 349               xd->interface_name_suffix = format (0, "0");
 350               last_pci_addr.as_u32 = pci_addr.as_u32;
 351               last_pci_addr_port = i;
 352             }
 353           else if (pci_addr.as_u32 == last_pci_addr.as_u32)
 354             {
 355               xd->interface_name_suffix =
 356                 format (0, "%u", i - last_pci_addr_port);
 357             }
 358           else
 359             {
 360               last_pci_addr.as_u32 = ~0;
 361             }
 362         }
 363       else
 364         last_pci_addr.as_u32 = ~0;
 365
 366       clib_memcpy (&xd->tx_conf, &dev_info.default_txconf,
 367                    sizeof (struct rte_eth_txconf));
 368       if (dm->conf->no_multi_seg)
 369         {
 370           xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
 371           port_conf_template.rxmode.jumbo_frame = 0;
 372         }
 373       else
 374         {
 375           xd->tx_conf.txq_flags &= ~ETH_TXQ_FLAGS_NOMULTSEGS;
 376           port_conf_template.rxmode.jumbo_frame = 1;
 377         }
 378
 379       clib_memcpy (&xd->port_conf, &port_conf_template,
 380                    sizeof (struct rte_eth_conf));
 381
 382       xd->tx_q_used = clib_min (dev_info.max_tx_queues, tm->n_vlib_mains);
 383
 384       if (devconf->num_tx_queues > 0
 385           && devconf->num_tx_queues < xd->tx_q_used)
 386         xd->tx_q_used = clib_min (xd->tx_q_used, devconf->num_tx_queues);
 387
 388       if (devconf->num_rx_queues > 1 && dm->use_rss == 0)
 389         {
 390           rt->function = dpdk_input_rss_multiarch_select ();
 391           dm->use_rss = 1;
 392         }
 393
 394       if (devconf->num_rx_queues > 1
 395           && dev_info.max_rx_queues >= devconf->num_rx_queues)
 396         {
 397           xd->rx_q_used = devconf->num_rx_queues;
 398           xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
 399           if (devconf->rss_fn == 0)
 400             xd->port_conf.rx_adv_conf.rss_conf.rss_hf =
 401               ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
 402           else
 403             xd->port_conf.rx_adv_conf.rss_conf.rss_hf = devconf->rss_fn;
 404         }
 405       else
 406         xd->rx_q_used = 1;
 407
 408       xd->flags |= DPDK_DEVICE_FLAG_PMD;
 409
 410       /* workaround for drivers not setting driver_name */
 411       if ((!dev_info.driver_name) && (dev_info.pci_dev))
 412         dev_info.driver_name = dev_info.pci_dev->driver->name;
 413       ASSERT (dev_info.driver_name);
 414
 415       if (!xd->pmd)
 416         {
 417
 418
 419 #define _(s,f) else if (dev_info.driver_name &&                 \
 420                         !strcmp(dev_info.driver_name, s))       \
 421                  xd->pmd = VNET_DPDK_PMD_##f;
 422           if (0)
 423             ;
 424           foreach_dpdk_pmd
 425 #undef _
 426             else
 427             xd->pmd = VNET_DPDK_PMD_UNKNOWN;
 428
 429
 430           switch (xd->pmd)
 431             {
 432               /* 1G adapters */
 433             case VNET_DPDK_PMD_E1000EM:
 434             case VNET_DPDK_PMD_IGB:
 435             case VNET_DPDK_PMD_IGBVF:
 436               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 437               break;
 438
 439               /* 10G adapters */
 440             case VNET_DPDK_PMD_IXGBE:
 441             case VNET_DPDK_PMD_IXGBEVF:
 442             case VNET_DPDK_PMD_THUNDERX:
 443               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 444               xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 445               xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 446               break;
 447             case VNET_DPDK_PMD_DPAA2:
 448               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 449               break;
 450
 451               /* Cisco VIC */
 452             case VNET_DPDK_PMD_ENIC:
 453               rte_eth_link_get_nowait (i, &l);
 454               xd->nb_rx_desc = DPDK_NB_RX_DESC_ENIC;
 455               if (l.link_speed == 40000)
 456                 {
 457                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 458                   xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 459                 }
 460               else
 461                 {
 462                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 463                   xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 464                 }
 465               break;
 466
 467               /* Intel Fortville */
 468             case VNET_DPDK_PMD_I40E:
 469             case VNET_DPDK_PMD_I40EVF:
 470               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 471               xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 472               xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 473
 474               switch (dev_info.pci_dev->id.device_id)
 475                 {
 476                 case I40E_DEV_ID_10G_BASE_T:
 477                 case I40E_DEV_ID_SFP_XL710:
 478                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 479                   break;
 480                 case I40E_DEV_ID_QSFP_A:
 481                 case I40E_DEV_ID_QSFP_B:
 482                 case I40E_DEV_ID_QSFP_C:
 483                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 484                   break;
 485                 case I40E_DEV_ID_VF:
 486                   rte_eth_link_get_nowait (i, &l);
 487                   xd->port_type = l.link_speed == 10000 ?
 488                     VNET_DPDK_PORT_TYPE_ETH_10G : VNET_DPDK_PORT_TYPE_ETH_40G;
 489                   break;
 490                 default:
 491                   xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 492                 }
 493               break;
 494
 495             case VNET_DPDK_PMD_CXGBE:
 496               switch (dev_info.pci_dev->id.device_id)
 497                 {
 498                 case 0x540d:    /* T580-CR */
 499                 case 0x5410:    /* T580-LP-cr */
 500                   xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 501                   xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 502                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 503                   break;
 504                 case 0x5403:    /* T540-CR */
 505                   xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 506                   xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 507                   xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 508                   break;
 509                 default:
 510                   xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 511                   xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 512                   xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 513                 }
 514               break;
 515
 516               /* Intel Red Rock Canyon */
 517             case VNET_DPDK_PMD_FM10K:
 518               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_SWITCH;
 519               xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 520               xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 521               break;
 522
 523               /* virtio */
 524             case VNET_DPDK_PMD_VIRTIO:
 525               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 526               xd->nb_rx_desc = DPDK_NB_RX_DESC_VIRTIO;
 527               xd->nb_tx_desc = DPDK_NB_TX_DESC_VIRTIO;
 528               break;
 529
 530               /* vmxnet3 */
 531             case VNET_DPDK_PMD_VMXNET3:
 532               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 533               xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
 534               break;
 535
 536             case VNET_DPDK_PMD_AF_PACKET:
 537               xd->port_type = VNET_DPDK_PORT_TYPE_AF_PACKET;
 538               xd->af_packet_port_id = af_packet_port_id++;
 539               break;
 540
 541             case VNET_DPDK_PMD_BOND:
 542               xd->port_type = VNET_DPDK_PORT_TYPE_ETH_BOND;
 543               break;
 544
 545             default:
 546               xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 547             }
 548
 549           if (devconf->num_rx_desc)
 550             xd->nb_rx_desc = devconf->num_rx_desc;
 551
 552           if (devconf->num_tx_desc)
 553             xd->nb_tx_desc = devconf->num_tx_desc;
 554         }
 555
 556       /*
 557        * Ensure default mtu is not > the mtu read from the hardware.
 558        * Otherwise rte_eth_dev_configure() will fail and the port will
 559        * not be available.
 560        */
 561       if (ETHERNET_MAX_PACKET_BYTES > dev_info.max_rx_pktlen)
 562         {
 563           /*
 564            * This device does not support the platforms's max frame
 565            * size. Use it's advertised mru instead.
 566            */
 567           xd->port_conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
 568         }
 569       else
 570         {
 571           xd->port_conf.rxmode.max_rx_pkt_len = ETHERNET_MAX_PACKET_BYTES;
 572
 573           /*
 574            * Some platforms do not account for Ethernet FCS (4 bytes) in
 575            * MTU calculations. To interop with them increase mru but only
 576            * if the device's settings can support it.
 577            */
 578           if ((dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES + 4)) &&
 579               xd->port_conf.rxmode.hw_strip_crc)
 580             {
 581               /*
 582                * Allow additional 4 bytes (for Ethernet FCS). These bytes are
 583                * stripped by h/w and so will not consume any buffer memory.
 584                */
 585               xd->port_conf.rxmode.max_rx_pkt_len += 4;
 586             }
 587         }
 588
 589 #if RTE_VERSION < RTE_VERSION_NUM(16, 4, 0, 0)
 590       /*
 591        * Older VMXNET3 driver doesn't support jumbo / multi-buffer pkts
 592        */
 593       if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
 594         {
 595           xd->port_conf.rxmode.max_rx_pkt_len = 1518;
 596           xd->port_conf.rxmode.jumbo_frame = 0;
 597         }
 598 #endif
 599
 600       if (xd->pmd == VNET_DPDK_PMD_AF_PACKET)
 601         {
 602           f64 now = vlib_time_now (vm);
 603           u32 rnd;
 604           rnd = (u32) (now * 1e6);
 605           rnd = random_u32 (&rnd);
 606           clib_memcpy (addr + 2, &rnd, sizeof (rnd));
 607           addr[0] = 2;
 608           addr[1] = 0xfe;
 609         }
 610       else
 611         rte_eth_macaddr_get (i, (struct ether_addr *) addr);
 612
 613       if (xd->tx_q_used < tm->n_vlib_mains)
 614         dpdk_device_lock_init (xd);
 615
 616       xd->device_index = xd - dm->devices;
 617       ASSERT (i == xd->device_index);
 618       xd->per_interface_next_index = ~0;
 619
 620       /* assign interface to input thread */
 621       dpdk_device_and_queue_t *dq;
 622       int q;
 623
 624       if (devconf->workers)
 625         {
 626           int i;
 627           q = 0;
 628           /* *INDENT-OFF* */
 629           clib_bitmap_foreach (i, devconf->workers, ({
 630             int cpu = dm->input_cpu_first_index + i;
 631             unsigned lcore = vlib_worker_threads[cpu].dpdk_lcore_id;
 632             vec_validate(xd->cpu_socket_id_by_queue, q);
 633             xd->cpu_socket_id_by_queue[q] = rte_lcore_to_socket_id(lcore);
 634             vec_add2(dm->devices_by_cpu[cpu], dq, 1);
 635             dq->device = xd->device_index;
 636             dq->queue_id = q++;
 637           }));
 638           /* *INDENT-ON* */
 639         }
 640       else
 641         for (q = 0; q < xd->rx_q_used; q++)
 642           {
 643             int cpu = dm->input_cpu_first_index + next_cpu;
 644             unsigned lcore = vlib_worker_threads[cpu].dpdk_lcore_id;
 645
 646             /*
 647              * numa node for worker thread handling this queue
 648              * needed for taking buffers from the right mempool
 649              */
 650             vec_validate (xd->cpu_socket_id_by_queue, q);
 651             xd->cpu_socket_id_by_queue[q] = rte_lcore_to_socket_id (lcore);
 652
 653             /*
 654              * construct vector of (device,queue) pairs for each worker thread
 655              */
 656             vec_add2 (dm->devices_by_cpu[cpu], dq, 1);
 657             dq->device = xd->device_index;
 658             dq->queue_id = q;
 659
 660             next_cpu++;
 661             if (next_cpu == dm->input_cpu_count)
 662               next_cpu = 0;
 663           }
 664
 665       vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
 666                             CLIB_CACHE_LINE_BYTES);
 667       for (j = 0; j < tm->n_vlib_mains; j++)
 668         {
 669           vec_validate_ha (xd->tx_vectors[j], xd->nb_tx_desc,
 670                            sizeof (tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
 671           vec_reset_length (xd->tx_vectors[j]);
 672         }
 673
 674       vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
 675                             CLIB_CACHE_LINE_BYTES);
 676       for (j = 0; j < xd->rx_q_used; j++)
 677         {
 678           vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE - 1,
 679                                 CLIB_CACHE_LINE_BYTES);
 680           vec_reset_length (xd->rx_vectors[j]);
 681         }
 682
 683       rv = dpdk_port_setup (dm, xd);
 684
 685       if (rv)
 686         return rv;
 687
 688       /* count the number of descriptors used for this device */
 689       nb_desc += xd->nb_rx_desc + xd->nb_tx_desc * xd->tx_q_used;
 690
 691       error = ethernet_register_interface
 692         (dm->vnet_main, dpdk_device_class.index, xd->device_index,
 693          /* ethernet address */ addr,
 694          &xd->vlib_hw_if_index, dpdk_flag_change);
 695       if (error)
 696         return error;
 697
 698       sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 699       xd->vlib_sw_if_index = sw->sw_if_index;
 700       hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 701
 702       /*
 703        * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
 704        *            driver to dynamically change the mtu.  If/when the
 705        *            VIC firmware gets fixed, then this should be removed.
 706        */
 707       if (xd->pmd == VNET_DPDK_PMD_ENIC)
 708         {
 709           /*
 710            * Initialize mtu to what has been set by CIMC in the firmware cfg.
 711            */
 712           hi->max_packet_bytes = dev_info.max_rx_pktlen;
 713           if (devconf->vlan_strip_offload != DPDK_DEVICE_VLAN_STRIP_OFF)
 714             vlan_strip = 1;     /* remove vlan tag from VIC port by default */
 715           else
 716             clib_warning ("VLAN strip disabled for interface\n");
 717         }
 718       else if (devconf->vlan_strip_offload == DPDK_DEVICE_VLAN_STRIP_ON)
 719         vlan_strip = 1;
 720
 721       if (vlan_strip)
 722         {
 723           int vlan_off;
 724           vlan_off = rte_eth_dev_get_vlan_offload (xd->device_index);
 725           vlan_off |= ETH_VLAN_STRIP_OFFLOAD;
 726           if (rte_eth_dev_set_vlan_offload (xd->device_index, vlan_off) == 0)
 727             clib_warning ("VLAN strip enabled for interface\n");
 728           else
 729             clib_warning ("VLAN strip cannot be supported by interface\n");
 730         }
 731
 732 #if RTE_VERSION < RTE_VERSION_NUM(16, 4, 0, 0)
 733       /*
 734        * Older VMXNET3 driver doesn't support jumbo / multi-buffer pkts
 735        */
 736       else if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
 737         hi->max_packet_bytes = 1518;
 738 #endif
 739
 740       hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
 741         xd->port_conf.rxmode.max_rx_pkt_len - sizeof (ethernet_header_t);
 742
 743       rte_eth_dev_set_mtu (xd->device_index, hi->max_packet_bytes);
 744     }
 745
 746 #ifdef RTE_LIBRTE_KNI
 747   if (dm->conf->num_kni)
 748     {
 749       clib_warning ("Initializing KNI interfaces...");
 750       rte_kni_init (dm->conf->num_kni);
 751       for (i = 0; i < dm->conf->num_kni; i++)
 752         {
 753           u8 addr[6];
 754           int j;
 755
 756           /* Create vnet interface */
 757           vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
 758           xd->flags |= DPDK_DEVICE_FLAG_KNI;
 759
 760           xd->device_index = xd - dm->devices;
 761           ASSERT (nports + i == xd->device_index);
 762           xd->per_interface_next_index = ~0;
 763           xd->kni_port_id = i;
 764           xd->cpu_socket = -1;
 765           hash_set (dm->dpdk_device_by_kni_port_id, i, xd - dm->devices);
 766           xd->rx_q_used = 1;
 767
 768           /* assign interface to input thread */
 769           dpdk_device_and_queue_t *dq;
 770           vec_add2 (dm->devices_by_cpu[dm->input_cpu_first_index], dq, 1);
 771           dq->device = xd->device_index;
 772           dq->queue_id = 0;
 773
 774           vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
 775                                 CLIB_CACHE_LINE_BYTES);
 776           for (j = 0; j < tm->n_vlib_mains; j++)
 777             {
 778               vec_validate_ha (xd->tx_vectors[j], xd->nb_tx_desc,
 779                                sizeof (tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
 780               vec_reset_length (xd->tx_vectors[j]);
 781             }
 782
 783           vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
 784                                 CLIB_CACHE_LINE_BYTES);
 785           for (j = 0; j < xd->rx_q_used; j++)
 786             {
 787               vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE - 1,
 788                                     CLIB_CACHE_LINE_BYTES);
 789               vec_reset_length (xd->rx_vectors[j]);
 790             }
 791
 792           /* FIXME Set up one TX-queue per worker thread */
 793
 794           {
 795             f64 now = vlib_time_now (vm);
 796             u32 rnd;
 797             rnd = (u32) (now * 1e6);
 798             rnd = random_u32 (&rnd);
 799
 800             clib_memcpy (addr + 2, &rnd, sizeof (rnd));
 801             addr[0] = 2;
 802             addr[1] = 0xfe;
 803           }
 804
 805           error = ethernet_register_interface
 806             (dm->vnet_main, dpdk_device_class.index, xd->device_index,
 807              /* ethernet address */ addr,
 808              &xd->vlib_hw_if_index, dpdk_flag_change);
 809
 810           if (error)
 811             return error;
 812
 813           sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 814           xd->vlib_sw_if_index = sw->sw_if_index;
 815           hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 816         }
 817     }
 818 #endif
 819
 820   if (nb_desc > dm->conf->num_mbufs)
 821     clib_warning ("%d mbufs allocated but total rx/tx ring size is %d\n",
 822                   dm->conf->num_mbufs, nb_desc);
 823
 824   /* init next vhost-user if index */
 825   dm->next_vu_if_id = 0;
 826
 827   return 0;
 828 }
 829
 830 static void
 831 dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
 832 {
 833   vlib_pci_main_t *pm = &pci_main;
 834   clib_error_t *error;
 835   vlib_pci_device_t *d;
 836   u8 *pci_addr = 0;
 837   int num_whitelisted = vec_len (conf->dev_confs);
 838
 839   /* *INDENT-OFF* */
 840   pool_foreach (d, pm->pci_devs, ({
 841     dpdk_device_config_t * devconf = 0;
 842     vec_reset_length (pci_addr);
 843     pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, &d->bus_address, 0);
 844
 845     if (d->device_class != PCI_CLASS_NETWORK_ETHERNET)
 846       continue;
 847
 848     if (num_whitelisted)
 849       {
 850         uword * p = hash_get (conf->device_config_index_by_pci_addr, d->bus_address.as_u32);
 851
 852         if (!p)
 853           continue;
 854
 855         devconf = pool_elt_at_index (conf->dev_confs, p[0]);
 856       }
 857
 858     /* virtio */
 859     if (d->vendor_id == 0x1af4 && d->device_id == 0x1000)
 860       ;
 861     /* vmxnet3 */
 862     else if (d->vendor_id == 0x15ad && d->device_id == 0x07b0)
 863       ;
 864     /* all Intel devices */
 865     else if (d->vendor_id == 0x8086)
 866       ;
 867     /* Cisco VIC */
 868     else if (d->vendor_id == 0x1137 && d->device_id == 0x0043)
 869       ;
 870     /* Chelsio T4/T5 */
 871     else if (d->vendor_id == 0x1425 && (d->device_id & 0xe000) == 0x4000)
 872       ;
 873     else
 874       {
 875         clib_warning ("Unsupported Ethernet PCI device 0x%04x:0x%04x found "
 876                       "at PCI address %s\n", (u16) d->vendor_id, (u16) d->device_id,
 877                       pci_addr);
 878         continue;
 879       }
 880
 881     error = vlib_pci_bind_to_uio (d, (char *) conf->uio_driver_name);
 882
 883     if (error)
 884       {
 885         if (devconf == 0)
 886           {
 887             pool_get (conf->dev_confs, devconf);
 888             hash_set (conf->device_config_index_by_pci_addr, d->bus_address.as_u32,
 889                       devconf - conf->dev_confs);
 890             devconf->pci_addr.as_u32 = d->bus_address.as_u32;
 891           }
 892         devconf->is_blacklisted = 1;
 893         clib_error_report (error);
 894       }
 895   }));
 896   /* *INDENT-ON* */
 897   vec_free (pci_addr);
 898 }
 899
 900 static clib_error_t *
 901 dpdk_device_config (dpdk_config_main_t * conf, vlib_pci_addr_t pci_addr,
 902                     unformat_input_t * input, u8 is_default)
 903 {
 904   clib_error_t *error = 0;
 905   uword *p;
 906   dpdk_device_config_t *devconf;
 907   unformat_input_t sub_input;
 908
 909   if (is_default)
 910     {
 911       devconf = &conf->default_devconf;
 912     }
 913   else
 914     {
 915       p = hash_get (conf->device_config_index_by_pci_addr, pci_addr.as_u32);
 916
 917       if (!p)
 918         {
 919           pool_get (conf->dev_confs, devconf);
 920           hash_set (conf->device_config_index_by_pci_addr, pci_addr.as_u32,
 921                     devconf - conf->dev_confs);
 922         }
 923       else
 924         return clib_error_return (0,
 925                                   "duplicate configuration for PCI address %U",
 926                                   format_vlib_pci_addr, &pci_addr);
 927     }
 928
 929   devconf->pci_addr.as_u32 = pci_addr.as_u32;
 930
 931   if (!input)
 932     return 0;
 933
 934   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 935     {
 936       if (unformat (input, "num-rx-queues %u", &devconf->num_rx_queues))
 937         ;
 938       else if (unformat (input, "num-tx-queues %u", &devconf->num_tx_queues))
 939         ;
 940       else if (unformat (input, "num-rx-desc %u", &devconf->num_rx_desc))
 941         ;
 942       else if (unformat (input, "num-tx-desc %u", &devconf->num_tx_desc))
 943         ;
 944       else if (unformat (input, "workers %U", unformat_bitmap_list,
 945                          &devconf->workers))
 946         ;
 947       else
 948         if (unformat
 949             (input, "rss %U", unformat_vlib_cli_sub_input, &sub_input))
 950         {
 951           error = unformat_rss_fn (&sub_input, &devconf->rss_fn);
 952           if (error)
 953             break;
 954         }
 955       else if (unformat (input, "vlan-strip-offload off"))
 956         devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_OFF;
 957       else if (unformat (input, "vlan-strip-offload on"))
 958         devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_ON;
 959       else
 960         {
 961           error = clib_error_return (0, "unknown input `%U'",
 962                                      format_unformat_error, input);
 963           break;
 964         }
 965     }
 966
 967   if (error)
 968     return error;
 969
 970   if (devconf->workers && devconf->num_rx_queues == 0)
 971     devconf->num_rx_queues = clib_bitmap_count_set_bits (devconf->workers);
 972   else if (devconf->workers &&
 973            clib_bitmap_count_set_bits (devconf->workers) !=
 974            devconf->num_rx_queues)
 975     error =
 976       clib_error_return (0,
 977                          "%U: number of worker threadds must be "
 978                          "equal to number of rx queues", format_vlib_pci_addr,
 979                          &pci_addr);
 980
 981   return error;
 982 }
 983
 984 static clib_error_t *
 985 dpdk_config (vlib_main_t * vm, unformat_input_t * input)
 986 {
 987   clib_error_t *error = 0;
 988   dpdk_main_t *dm = &dpdk_main;
 989   dpdk_config_main_t *conf = &dpdk_config_main;
 990   vlib_thread_main_t *tm = vlib_get_thread_main ();
 991   dpdk_device_config_t *devconf;
 992   vlib_pci_addr_t pci_addr;
 993   unformat_input_t sub_input;
 994   u8 *s, *tmp = 0;
 995   u8 *rte_cmd = 0, *ethname = 0;
 996   u32 log_level;
 997   int ret, i;
 998   int num_whitelisted = 0;
 999   u8 no_pci = 0;
1000   u8 no_huge = 0;
1001   u8 huge_dir = 0;
1002   u8 file_prefix = 0;
1003   u8 *socket_mem = 0;
1004
1005   conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
1006
1007   // MATT-FIXME: inverted virtio-vhost logic to use virtio by default
1008   conf->use_virtio_vhost = 1;
1009
1010   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1011     {
1012       /* Prime the pump */
1013       if (unformat (input, "no-hugetlb"))
1014         {
1015           vec_add1 (conf->eal_init_args, (u8 *) "no-huge");
1016           no_huge = 1;
1017         }
1018
1019       else if (unformat (input, "enable-tcp-udp-checksum"))
1020         conf->enable_tcp_udp_checksum = 1;
1021
1022       else if (unformat (input, "decimal-interface-names"))
1023         conf->interface_name_format_decimal = 1;
1024
1025       else if (unformat (input, "no-multi-seg"))
1026         conf->no_multi_seg = 1;
1027
1028       else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
1029                          &sub_input))
1030         {
1031           error =
1032             dpdk_device_config (conf, (vlib_pci_addr_t) (u32) ~ 1, &sub_input,
1033                                 1);
1034
1035           if (error)
1036             return error;
1037         }
1038       else
1039         if (unformat
1040             (input, "dev %U %U", unformat_vlib_pci_addr, &pci_addr,
1041              unformat_vlib_cli_sub_input, &sub_input))
1042         {
1043           error = dpdk_device_config (conf, pci_addr, &sub_input, 0);
1044
1045           if (error)
1046             return error;
1047
1048           num_whitelisted++;
1049         }
1050       else if (unformat (input, "dev %U", unformat_vlib_pci_addr, &pci_addr))
1051         {
1052           error = dpdk_device_config (conf, pci_addr, 0, 0);
1053
1054           if (error)
1055             return error;
1056
1057           num_whitelisted++;
1058         }
1059       else if (unformat (input, "num-mbufs %d", &conf->num_mbufs))
1060         ;
1061       else if (unformat (input, "kni %d", &conf->num_kni))
1062         ;
1063       else if (unformat (input, "uio-driver %s", &conf->uio_driver_name))
1064         ;
1065       else if (unformat (input, "socket-mem %s", &socket_mem))
1066         ;
1067       else
1068         if (unformat
1069             (input, "vhost-user-coalesce-frames %d",
1070              &conf->vhost_coalesce_frames))
1071         ;
1072       else
1073         if (unformat
1074             (input, "vhost-user-coalesce-time %f",
1075              &conf->vhost_coalesce_time))
1076         ;
1077       else if (unformat (input, "enable-vhost-user"))
1078         conf->use_virtio_vhost = 0;
1079       else if (unformat (input, "no-pci"))
1080         {
1081           no_pci = 1;
1082           tmp = format (0, "--no-pci%c", 0);
1083           vec_add1 (conf->eal_init_args, tmp);
1084         }
1085       else if (unformat (input, "poll-sleep %d", &dm->poll_sleep))
1086         ;
1087
1088 #define _(a)                                    \
1089       else if (unformat(input, #a))             \
1090         {                                       \
1091           tmp = format (0, "--%s%c", #a, 0);    \
1092           vec_add1 (conf->eal_init_args, tmp);    \
1093         }
1094       foreach_eal_double_hyphen_predicate_arg
1095 #undef _
1096 #define _(a)                                          \
1097         else if (unformat(input, #a " %s", &s))       \
1098           {                                           \
1099             if (!strncmp(#a, "huge-dir", 8))          \
1100               huge_dir = 1;                           \
1101             else if (!strncmp(#a, "file-prefix", 11)) \
1102               file_prefix = 1;                        \
1103             tmp = format (0, "--%s%c", #a, 0);        \
1104             vec_add1 (conf->eal_init_args, tmp);      \
1105             vec_add1 (s, 0);                          \
1106             vec_add1 (conf->eal_init_args, s);        \
1107           }
1108         foreach_eal_double_hyphen_arg
1109 #undef _
1110 #define _(a,b)                                          \
1111           else if (unformat(input, #a " %s", &s))       \
1112             {                                           \
1113               tmp = format (0, "-%s%c", #b, 0);         \
1114               vec_add1 (conf->eal_init_args, tmp);      \
1115               vec_add1 (s, 0);                          \
1116               vec_add1 (conf->eal_init_args, s);        \
1117             }
1118         foreach_eal_single_hyphen_arg
1119 #undef _
1120 #define _(a,b)                                          \
1121             else if (unformat(input, #a " %s", &s))     \
1122               {                                         \
1123                 tmp = format (0, "-%s%c", #b, 0);       \
1124                 vec_add1 (conf->eal_init_args, tmp);    \
1125                 vec_add1 (s, 0);                        \
1126                 vec_add1 (conf->eal_init_args, s);      \
1127                 conf->a##_set_manually = 1;             \
1128               }
1129         foreach_eal_single_hyphen_mandatory_arg
1130 #undef _
1131         else if (unformat (input, "default"))
1132         ;
1133
1134       else if (unformat (input, " "))
1135         ;
1136       else
1137         {
1138           error = clib_error_return (0, "unknown input `%U'",
1139                                      format_unformat_error, input);
1140           goto done;
1141         }
1142     }
1143
1144   if (!conf->uio_driver_name)
1145     conf->uio_driver_name = format (0, "igb_uio%c", 0);
1146
1147   /*
1148    * Use 1G huge pages if available.
1149    */
1150   if (!no_huge && !huge_dir)
1151     {
1152       u32 x, *mem_by_socket = 0;
1153       uword c = 0;
1154       u8 use_1g = 1;
1155       u8 use_2m = 1;
1156       u8 less_than_1g = 1;
1157       int rv;
1158
1159       umount (DEFAULT_HUGE_DIR);
1160
1161       /* Process "socket-mem" parameter value */
1162       if (vec_len (socket_mem))
1163         {
1164           unformat_input_t in;
1165           unformat_init_vector (&in, socket_mem);
1166           while (unformat_check_input (&in) != UNFORMAT_END_OF_INPUT)
1167             {
1168               if (unformat (&in, "%u,", &x))
1169                 ;
1170               else if (unformat (&in, "%u", &x))
1171                 ;
1172               else if (unformat (&in, ","))
1173                 x = 0;
1174               else
1175                 break;
1176
1177               vec_add1 (mem_by_socket, x);
1178
1179               if (x > 1023)
1180                 less_than_1g = 0;
1181             }
1182           /* Note: unformat_free vec_frees(in.buffer), aka socket_mem... */
1183           unformat_free (&in);
1184           socket_mem = 0;
1185         }
1186       else
1187         {
1188           /* *INDENT-OFF* */
1189           clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1190             {
1191               vec_validate(mem_by_socket, c);
1192               mem_by_socket[c] = 256; /* default per-socket mem */
1193             }
1194           ));
1195           /* *INDENT-ON* */
1196         }
1197
1198       /* check if available enough 1GB pages for each socket */
1199       /* *INDENT-OFF* */
1200       clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1201         {
1202           u32 pages_avail, page_size, mem;
1203           u8 *s = 0;
1204           u8 *p = 0;
1205           char * numa_path = "/sys/devices/system/node/node%u/";
1206           char * nonnuma_path = "/sys/kernel/mm/";
1207           char * suffix = "hugepages/hugepages-%ukB/free_hugepages%c";
1208           char * path = NULL;
1209           struct stat sb_numa, sb_nonnuma;
1210
1211           p = format(p, numa_path, c);
1212           if (stat(numa_path, &sb_numa) < 0)
1213             sb_numa.st_mode = 0;
1214
1215           if (stat(nonnuma_path, &sb_nonnuma) < 0)
1216             sb_nonnuma.st_mode = 0;
1217
1218           if (S_ISDIR(sb_numa.st_mode)) {
1219             path = (char*)format((u8*)path, "%s%s", p, suffix);
1220           } else if (S_ISDIR(sb_nonnuma.st_mode)) {
1221             path = (char*)format((u8*)path, "%s%s", nonnuma_path, suffix);
1222           } else {
1223             use_1g = 0;
1224             use_2m = 0;
1225             vec_free(p);
1226             break;
1227           }
1228
1229           vec_validate(mem_by_socket, c);
1230           mem = mem_by_socket[c];
1231
1232           page_size = 1024;
1233           pages_avail = 0;
1234           s = format (s, path, page_size * 1024, 0);
1235           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1236           vec_reset_length (s);
1237
1238           if (page_size * pages_avail < mem)
1239             use_1g = 0;
1240
1241           page_size = 2;
1242           pages_avail = 0;
1243           s = format (s, path, page_size * 1024, 0);
1244           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1245           vec_reset_length (s);
1246
1247           if (page_size * pages_avail < mem)
1248             use_2m = 0;
1249
1250           vec_free(s);
1251           vec_free(p);
1252           vec_free(path);
1253       }));
1254       /* *INDENT-ON* */
1255
1256       if (mem_by_socket == 0)
1257         {
1258           error = clib_error_return (0, "mem_by_socket NULL");
1259           goto done;
1260         }
1261       _vec_len (mem_by_socket) = c + 1;
1262
1263       /* regenerate socket_mem string */
1264       vec_foreach_index (x, mem_by_socket)
1265         socket_mem = format (socket_mem, "%s%u",
1266                              socket_mem ? "," : "", mem_by_socket[x]);
1267       socket_mem = format (socket_mem, "%c", 0);
1268
1269       vec_free (mem_by_socket);
1270
1271       rv = mkdir (VPP_RUN_DIR, 0755);
1272       if (rv && errno != EEXIST)
1273         {
1274           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1275                                      VPP_RUN_DIR, errno);
1276           goto done;
1277         }
1278
1279       rv = mkdir (DEFAULT_HUGE_DIR, 0755);
1280       if (rv && errno != EEXIST)
1281         {
1282           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1283                                      DEFAULT_HUGE_DIR, errno);
1284           goto done;
1285         }
1286
1287       if (use_1g && !(less_than_1g && use_2m))
1288         {
1289           rv =
1290             mount ("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, "pagesize=1G");
1291         }
1292       else if (use_2m)
1293         {
1294           rv = mount ("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, NULL);
1295         }
1296       else
1297         {
1298           return clib_error_return (0, "not enough free huge pages");
1299         }
1300
1301       if (rv)
1302         {
1303           error = clib_error_return (0, "mount failed %d", errno);
1304           goto done;
1305         }
1306
1307       tmp = format (0, "--huge-dir%c", 0);
1308       vec_add1 (conf->eal_init_args, tmp);
1309       tmp = format (0, "%s%c", DEFAULT_HUGE_DIR, 0);
1310       vec_add1 (conf->eal_init_args, tmp);
1311       if (!file_prefix)
1312         {
1313           tmp = format (0, "--file-prefix%c", 0);
1314           vec_add1 (conf->eal_init_args, tmp);
1315           tmp = format (0, "vpp%c", 0);
1316           vec_add1 (conf->eal_init_args, tmp);
1317         }
1318     }
1319
1320   vec_free (rte_cmd);
1321   vec_free (ethname);
1322
1323   if (error)
1324     return error;
1325
1326   /* I'll bet that -c and -n must be the first and second args... */
1327   if (!conf->coremask_set_manually)
1328     {
1329       vlib_thread_registration_t *tr;
1330       uword *coremask = 0;
1331       int i;
1332
1333       /* main thread core */
1334       coremask = clib_bitmap_set (coremask, tm->main_lcore, 1);
1335
1336       for (i = 0; i < vec_len (tm->registrations); i++)
1337         {
1338           tr = tm->registrations[i];
1339           coremask = clib_bitmap_or (coremask, tr->coremask);
1340         }
1341
1342       vec_insert (conf->eal_init_args, 2, 1);
1343       conf->eal_init_args[1] = (u8 *) "-c";
1344       tmp = format (0, "%U%c", format_bitmap_hex, coremask, 0);
1345       conf->eal_init_args[2] = tmp;
1346       clib_bitmap_free (coremask);
1347     }
1348
1349   if (!conf->nchannels_set_manually)
1350     {
1351       vec_insert (conf->eal_init_args, 2, 3);
1352       conf->eal_init_args[3] = (u8 *) "-n";
1353       tmp = format (0, "%d", conf->nchannels);
1354       conf->eal_init_args[4] = tmp;
1355     }
1356
1357   if (no_pci == 0 && geteuid () == 0)
1358     dpdk_bind_devices_to_uio (conf);
1359
1360 #define _(x) \
1361     if (devconf->x == 0 && conf->default_devconf.x > 0) \
1362       devconf->x = conf->default_devconf.x ;
1363
1364   /* *INDENT-OFF* */
1365   pool_foreach (devconf, conf->dev_confs, ({
1366
1367     /* default per-device config items */
1368     foreach_dpdk_device_config_item
1369
1370     /* add DPDK EAL whitelist/blacklist entry */
1371     if (num_whitelisted > 0 && devconf->is_blacklisted == 0)
1372       {
1373         tmp = format (0, "-w%c", 0);
1374         vec_add1 (conf->eal_init_args, tmp);
1375         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1376         vec_add1 (conf->eal_init_args, tmp);
1377       }
1378     else if (num_whitelisted == 0 && devconf->is_blacklisted != 0)
1379       {
1380         tmp = format (0, "-b%c", 0);
1381         vec_add1 (conf->eal_init_args, tmp);
1382         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1383         vec_add1 (conf->eal_init_args, tmp);
1384       }
1385   }));
1386   /* *INDENT-ON* */
1387
1388 #undef _
1389
1390   /* set master-lcore */
1391   tmp = format (0, "--master-lcore%c", 0);
1392   vec_add1 (conf->eal_init_args, tmp);
1393   tmp = format (0, "%u%c", tm->main_lcore, 0);
1394   vec_add1 (conf->eal_init_args, tmp);
1395
1396   /* set socket-mem */
1397   tmp = format (0, "--socket-mem%c", 0);
1398   vec_add1 (conf->eal_init_args, tmp);
1399   tmp = format (0, "%s%c", socket_mem, 0);
1400   vec_add1 (conf->eal_init_args, tmp);
1401
1402   /* NULL terminate the "argv" vector, in case of stupidity */
1403   vec_add1 (conf->eal_init_args, 0);
1404   _vec_len (conf->eal_init_args) -= 1;
1405
1406   /* Set up DPDK eal and packet mbuf pool early. */
1407
1408   log_level = (CLIB_DEBUG > 0) ? RTE_LOG_DEBUG : RTE_LOG_NOTICE;
1409
1410   rte_set_log_level (log_level);
1411
1412   vm = vlib_get_main ();
1413
1414   /* make copy of args as rte_eal_init tends to mess up with arg array */
1415   for (i = 1; i < vec_len (conf->eal_init_args); i++)
1416     conf->eal_init_args_str = format (conf->eal_init_args_str, "%s ",
1417                                       conf->eal_init_args[i]);
1418
1419   ret =
1420     rte_eal_init (vec_len (conf->eal_init_args),
1421                   (char **) conf->eal_init_args);
1422
1423   /* lazy umount hugepages */
1424   umount2 (DEFAULT_HUGE_DIR, MNT_DETACH);
1425
1426   if (ret < 0)
1427     return clib_error_return (0, "rte_eal_init returned %d", ret);
1428
1429   /* Dump the physical memory layout prior to creating the mbuf_pool */
1430   fprintf (stdout, "DPDK physical memory layout:\n");
1431   rte_dump_physmem_layout (stdout);
1432
1433   /* main thread 1st */
1434   error = vlib_buffer_pool_create (vm, conf->num_mbufs, rte_socket_id ());
1435   if (error)
1436     return error;
1437
1438   for (i = 0; i < RTE_MAX_LCORE; i++)
1439     {
1440       error = vlib_buffer_pool_create (vm, conf->num_mbufs,
1441                                        rte_lcore_to_socket_id (i));
1442       if (error)
1443         return error;
1444     }
1445
1446 done:
1447   return error;
1448 }
1449
1450 VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
1451
1452 void
1453 dpdk_update_link_state (dpdk_device_t * xd, f64 now)
1454 {
1455   vnet_main_t *vnm = vnet_get_main ();
1456   struct rte_eth_link prev_link = xd->link;
1457   u32 hw_flags = 0;
1458   u8 hw_flags_chg = 0;
1459
1460   /* only update link state for PMD interfaces */
1461   if ((xd->flags & DPDK_DEVICE_FLAG_PMD) == 0)
1462     return;
1463
1464   xd->time_last_link_update = now ? now : xd->time_last_link_update;
1465   memset (&xd->link, 0, sizeof (xd->link));
1466   rte_eth_link_get_nowait (xd->device_index, &xd->link);
1467
1468   if (LINK_STATE_ELOGS)
1469     {
1470       vlib_main_t *vm = vlib_get_main ();
1471       ELOG_TYPE_DECLARE (e) =
1472       {
1473       .format =
1474           "update-link-state: sw_if_index %d, admin_up %d,"
1475           "old link_state %d new link_state %d",.format_args = "i4i1i1i1",};
1476
1477       struct
1478       {
1479         u32 sw_if_index;
1480         u8 admin_up;
1481         u8 old_link_state;
1482         u8 new_link_state;
1483       } *ed;
1484       ed = ELOG_DATA (&vm->elog_main, e);
1485       ed->sw_if_index = xd->vlib_sw_if_index;
1486       ed->admin_up = (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) != 0;
1487       ed->old_link_state = (u8)
1488         vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index);
1489       ed->new_link_state = (u8) xd->link.link_status;
1490     }
1491
1492   if ((xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) &&
1493       ((xd->link.link_status != 0) ^
1494        vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index)))
1495     {
1496       hw_flags_chg = 1;
1497       hw_flags |= (xd->link.link_status ? VNET_HW_INTERFACE_FLAG_LINK_UP : 0);
1498     }
1499
1500   if (hw_flags_chg || (xd->link.link_duplex != prev_link.link_duplex))
1501     {
1502       hw_flags_chg = 1;
1503       switch (xd->link.link_duplex)
1504         {
1505         case ETH_LINK_HALF_DUPLEX:
1506           hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
1507           break;
1508         case ETH_LINK_FULL_DUPLEX:
1509           hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
1510           break;
1511         default:
1512           break;
1513         }
1514     }
1515 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
1516   if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1517     {
1518       hw_flags_chg = 1;
1519       switch (xd->link.link_speed)
1520         {
1521         case ETH_SPEED_NUM_10M:
1522           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1523           break;
1524         case ETH_SPEED_NUM_100M:
1525           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1526           break;
1527         case ETH_SPEED_NUM_1G:
1528           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1529           break;
1530         case ETH_SPEED_NUM_10G:
1531           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1532           break;
1533         case ETH_SPEED_NUM_40G:
1534           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1535           break;
1536         case 0:
1537           break;
1538         default:
1539           clib_warning ("unknown link speed %d", xd->link.link_speed);
1540           break;
1541         }
1542     }
1543 #else
1544   if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1545     {
1546       hw_flags_chg = 1;
1547       switch (xd->link.link_speed)
1548         {
1549         case ETH_LINK_SPEED_10:
1550           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1551           break;
1552         case ETH_LINK_SPEED_100:
1553           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1554           break;
1555         case ETH_LINK_SPEED_1000:
1556           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1557           break;
1558         case ETH_LINK_SPEED_10000:
1559           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1560           break;
1561         case ETH_LINK_SPEED_40G:
1562           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1563           break;
1564         case 0:
1565           break;
1566         default:
1567           clib_warning ("unknown link speed %d", xd->link.link_speed);
1568           break;
1569         }
1570     }
1571 #endif
1572   if (hw_flags_chg)
1573     {
1574       if (LINK_STATE_ELOGS)
1575         {
1576           vlib_main_t *vm = vlib_get_main ();
1577
1578           ELOG_TYPE_DECLARE (e) =
1579           {
1580           .format =
1581               "update-link-state: sw_if_index %d, new flags %d",.format_args
1582               = "i4i4",};
1583
1584           struct
1585           {
1586             u32 sw_if_index;
1587             u32 flags;
1588           } *ed;
1589           ed = ELOG_DATA (&vm->elog_main, e);
1590           ed->sw_if_index = xd->vlib_sw_if_index;
1591           ed->flags = hw_flags;
1592         }
1593       vnet_hw_interface_set_flags (vnm, xd->vlib_hw_if_index, hw_flags);
1594     }
1595 }
1596
1597 static uword
1598 dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
1599 {
1600   clib_error_t *error;
1601   vnet_main_t *vnm = vnet_get_main ();
1602   dpdk_main_t *dm = &dpdk_main;
1603   ethernet_main_t *em = &ethernet_main;
1604   dpdk_device_t *xd;
1605   vlib_thread_main_t *tm = vlib_get_thread_main ();
1606 #if DPDK_VHOST_USER
1607   void *vu_state;
1608 #endif
1609   int i;
1610
1611   error = dpdk_lib_init (dm);
1612
1613   /*
1614    * Turn on the input node if we found some devices to drive
1615    * and we're not running worker threads or i/o threads
1616    */
1617
1618   if (error == 0 && vec_len (dm->devices) > 0)
1619     {
1620       if (tm->n_vlib_mains == 1)
1621         vlib_node_set_state (vm, dpdk_input_node.index,
1622                              VLIB_NODE_STATE_POLLING);
1623       else
1624         for (i = 0; i < tm->n_vlib_mains; i++)
1625           if (vec_len (dm->devices_by_cpu[i]) > 0)
1626             vlib_node_set_state (vlib_mains[i], dpdk_input_node.index,
1627                                  VLIB_NODE_STATE_POLLING);
1628     }
1629
1630   if (error)
1631     clib_error_report (error);
1632
1633 #if DPDK_VHOST_USER
1634   dpdk_vhost_user_process_init (&vu_state);
1635 #endif
1636
1637   tm->worker_thread_release = 1;
1638
1639   f64 now = vlib_time_now (vm);
1640   vec_foreach (xd, dm->devices)
1641   {
1642     dpdk_update_link_state (xd, now);
1643   }
1644
1645   {
1646     /*
1647      * Extra set up for bond interfaces:
1648      *  1. Setup MACs for bond interfaces and their slave links which was set
1649      *     in dpdk_port_setup() but needs to be done again here to take effect.
1650      *  2. Set up info for bond interface related CLI support.
1651      */
1652     int nports = rte_eth_dev_count ();
1653     if (nports > 0)
1654       {
1655         for (i = 0; i < nports; i++)
1656           {
1657             struct rte_eth_dev_info dev_info;
1658             rte_eth_dev_info_get (i, &dev_info);
1659             if (!dev_info.driver_name)
1660               dev_info.driver_name = dev_info.pci_dev->driver->name;
1661             ASSERT (dev_info.driver_name);
1662             if (strncmp (dev_info.driver_name, "rte_bond_pmd", 12) == 0)
1663               {
1664                 u8 addr[6];
1665                 u8 slink[16];
1666                 int nlink = rte_eth_bond_slaves_get (i, slink, 16);
1667                 if (nlink > 0)
1668                   {
1669                     vnet_hw_interface_t *bhi;
1670                     ethernet_interface_t *bei;
1671                     int rv;
1672
1673                     /* Get MAC of 1st slave link */
1674                     rte_eth_macaddr_get (slink[0],
1675                                          (struct ether_addr *) addr);
1676                     /* Set MAC of bounded interface to that of 1st slave link */
1677                     rv =
1678                       rte_eth_bond_mac_address_set (i,
1679                                                     (struct ether_addr *)
1680                                                     addr);
1681                     if (rv < 0)
1682                       clib_warning ("Failed to set MAC address");
1683
1684                     /* Populate MAC of bonded interface in VPP hw tables */
1685                     bhi =
1686                       vnet_get_hw_interface (vnm,
1687                                              dm->devices[i].vlib_hw_if_index);
1688                     bei =
1689                       pool_elt_at_index (em->interfaces, bhi->hw_instance);
1690                     clib_memcpy (bhi->hw_address, addr, 6);
1691                     clib_memcpy (bei->address, addr, 6);
1692                     /* Init l3 packet size allowed on bonded interface */
1693                     bhi->max_packet_bytes = ETHERNET_MAX_PACKET_BYTES;
1694                     bhi->max_l3_packet_bytes[VLIB_RX] =
1695                       bhi->max_l3_packet_bytes[VLIB_TX] =
1696                       ETHERNET_MAX_PACKET_BYTES - sizeof (ethernet_header_t);
1697                     while (nlink >= 1)
1698                       {         /* for all slave links */
1699                         int slave = slink[--nlink];
1700                         dpdk_device_t *sdev = &dm->devices[slave];
1701                         vnet_hw_interface_t *shi;
1702                         vnet_sw_interface_t *ssi;
1703                         /* Add MAC to all slave links except the first one */
1704                         if (nlink)
1705                           rte_eth_dev_mac_addr_add (slave,
1706                                                     (struct ether_addr *)
1707                                                     addr, 0);
1708                         /* Set slaves bitmap for bonded interface */
1709                         bhi->bond_info =
1710                           clib_bitmap_set (bhi->bond_info,
1711                                            sdev->vlib_hw_if_index, 1);
1712                         /* Set slave link flags on slave interface */
1713                         shi =
1714                           vnet_get_hw_interface (vnm, sdev->vlib_hw_if_index);
1715                         ssi =
1716                           vnet_get_sw_interface (vnm, sdev->vlib_sw_if_index);
1717                         shi->bond_info = VNET_HW_INTERFACE_BOND_INFO_SLAVE;
1718                         ssi->flags |= VNET_SW_INTERFACE_FLAG_BOND_SLAVE;
1719
1720                         /* Set l3 packet size allowed as the lowest of slave */
1721                         if (bhi->max_l3_packet_bytes[VLIB_RX] >
1722                             shi->max_l3_packet_bytes[VLIB_RX])
1723                           bhi->max_l3_packet_bytes[VLIB_RX] =
1724                             bhi->max_l3_packet_bytes[VLIB_TX] =
1725                             shi->max_l3_packet_bytes[VLIB_RX];
1726
1727                         /* Set max packet size allowed as the lowest of slave */
1728                         if (bhi->max_packet_bytes > shi->max_packet_bytes)
1729                           bhi->max_packet_bytes = shi->max_packet_bytes;
1730                       }
1731                   }
1732               }
1733           }
1734       }
1735   }
1736
1737   while (1)
1738     {
1739       /*
1740        * check each time through the loop in case intervals are changed
1741        */
1742       f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
1743         dm->link_state_poll_interval : dm->stat_poll_interval;
1744
1745       vlib_process_wait_for_event_or_clock (vm, min_wait);
1746
1747       if (dpdk_get_admin_up_down_in_progress ())
1748         /* skip the poll if an admin up down is in progress (on any interface) */
1749         continue;
1750
1751       vec_foreach (xd, dm->devices)
1752       {
1753         f64 now = vlib_time_now (vm);
1754         if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
1755           dpdk_update_counters (xd, now);
1756         if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
1757           dpdk_update_link_state (xd, now);
1758
1759 #if DPDK_VHOST_USER
1760         if (xd->flags & DPDK_DEVICE_FLAG_VHOST_USER)
1761           if (dpdk_vhost_user_process_if (vm, xd, vu_state) != 0)
1762             continue;
1763 #endif
1764       }
1765     }
1766
1767 #if DPDK_VHOST_USER
1768   dpdk_vhost_user_process_cleanup (vu_state);
1769 #endif
1770
1771   return 0;
1772 }
1773
1774 /* *INDENT-OFF* */
1775 VLIB_REGISTER_NODE (dpdk_process_node,static) = {
1776     .function = dpdk_process,
1777     .type = VLIB_NODE_TYPE_PROCESS,
1778     .name = "dpdk-process",
1779     .process_log2_n_stack_bytes = 17,
1780 };
1781 /* *INDENT-ON* */
1782
1783 int
1784 dpdk_set_stat_poll_interval (f64 interval)
1785 {
1786   if (interval < DPDK_MIN_STATS_POLL_INTERVAL)
1787     return (VNET_API_ERROR_INVALID_VALUE);
1788
1789   dpdk_main.stat_poll_interval = interval;
1790
1791   return 0;
1792 }
1793
1794 int
1795 dpdk_set_link_state_poll_interval (f64 interval)
1796 {
1797   if (interval < DPDK_MIN_LINK_POLL_INTERVAL)
1798     return (VNET_API_ERROR_INVALID_VALUE);
1799
1800   dpdk_main.link_state_poll_interval = interval;
1801
1802   return 0;
1803 }
1804
1805 clib_error_t *
1806 dpdk_init (vlib_main_t * vm)
1807 {
1808   dpdk_main_t *dm = &dpdk_main;
1809   vlib_node_t *ei;
1810   clib_error_t *error = 0;
1811   vlib_thread_main_t *tm = vlib_get_thread_main ();
1812
1813   /* verify that structs are cacheline aligned */
1814   ASSERT (offsetof (dpdk_device_t, cacheline0) == 0);
1815   ASSERT (offsetof (dpdk_device_t, cacheline1) == CLIB_CACHE_LINE_BYTES);
1816   ASSERT (offsetof (dpdk_worker_t, cacheline0) == 0);
1817   ASSERT (offsetof (frame_queue_trace_t, cacheline0) == 0);
1818
1819   dm->vlib_main = vm;
1820   dm->vnet_main = vnet_get_main ();
1821   dm->conf = &dpdk_config_main;
1822
1823   ei = vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
1824   if (ei == 0)
1825     return clib_error_return (0, "ethernet-input node AWOL");
1826
1827   dm->ethernet_input_node_index = ei->index;
1828
1829   dm->conf->nchannels = 4;
1830   dm->conf->num_mbufs = dm->conf->num_mbufs ? dm->conf->num_mbufs : NB_MBUF;
1831   vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
1832
1833   dm->dpdk_device_by_kni_port_id = hash_create (0, sizeof (uword));
1834   dm->vu_sw_if_index_by_listener_fd = hash_create (0, sizeof (uword));
1835   dm->vu_sw_if_index_by_sock_fd = hash_create (0, sizeof (uword));
1836
1837   /* $$$ use n_thread_stacks since it's known-good at this point */
1838   vec_validate (dm->recycle, tm->n_thread_stacks - 1);
1839
1840   /* initialize EFD (early fast discard) default settings */
1841   dm->efd.enabled = DPDK_EFD_DISABLED;
1842   dm->efd.queue_hi_thresh = ((DPDK_EFD_DEFAULT_DEVICE_QUEUE_HI_THRESH_PCT *
1843                               DPDK_NB_RX_DESC_10GE) / 100);
1844   dm->efd.consec_full_frames_hi_thresh =
1845     DPDK_EFD_DEFAULT_CONSEC_FULL_FRAMES_HI_THRESH;
1846
1847   /* vhost-user coalescence frames defaults */
1848   dm->conf->vhost_coalesce_frames = 32;
1849   dm->conf->vhost_coalesce_time = 1e-3;
1850
1851   /* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
1852   dm->buffer_flags_template =
1853     (VLIB_BUFFER_TOTAL_LENGTH_VALID
1854      | IP_BUFFER_L4_CHECKSUM_COMPUTED | IP_BUFFER_L4_CHECKSUM_CORRECT);
1855
1856   dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
1857   dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
1858
1859   /* init CLI */
1860   if ((error = vlib_call_init_function (vm, dpdk_cli_init)))
1861     return error;
1862
1863   return error;
1864 }
1865
1866 VLIB_INIT_FUNCTION (dpdk_init);
1867
1868
1869 /*
1870  * fd.io coding-style-patch-verification: ON
1871  *
1872  * Local Variables:
1873  * eval: (c-set-style "gnu")
1874  * End:
1875  */