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->dev_type = VNET_DPDK_DEV_ETH;
 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], DPDK_TX_RING_SIZE,
 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->dev_type = VNET_DPDK_DEV_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], DPDK_TX_RING_SIZE,
 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
1135         {
1136           error = clib_error_return (0, "unknown input `%U'",
1137                                      format_unformat_error, input);
1138           goto done;
1139         }
1140     }
1141
1142   if (!conf->uio_driver_name)
1143     conf->uio_driver_name = format (0, "igb_uio%c", 0);
1144
1145   /*
1146    * Use 1G huge pages if available.
1147    */
1148   if (!no_huge && !huge_dir)
1149     {
1150       u32 x, *mem_by_socket = 0;
1151       uword c = 0;
1152       u8 use_1g = 1;
1153       u8 use_2m = 1;
1154       u8 less_than_1g = 1;
1155       int rv;
1156
1157       umount (DEFAULT_HUGE_DIR);
1158
1159       /* Process "socket-mem" parameter value */
1160       if (vec_len (socket_mem))
1161         {
1162           unformat_input_t in;
1163           unformat_init_vector (&in, socket_mem);
1164           while (unformat_check_input (&in) != UNFORMAT_END_OF_INPUT)
1165             {
1166               if (unformat (&in, "%u,", &x))
1167                 ;
1168               else if (unformat (&in, "%u", &x))
1169                 ;
1170               else if (unformat (&in, ","))
1171                 x = 0;
1172               else
1173                 break;
1174
1175               vec_add1 (mem_by_socket, x);
1176
1177               if (x > 1023)
1178                 less_than_1g = 0;
1179             }
1180           /* Note: unformat_free vec_frees(in.buffer), aka socket_mem... */
1181           unformat_free (&in);
1182           socket_mem = 0;
1183         }
1184       else
1185         {
1186           /* *INDENT-OFF* */
1187           clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1188             {
1189               vec_validate(mem_by_socket, c);
1190               mem_by_socket[c] = 256; /* default per-socket mem */
1191             }
1192           ));
1193           /* *INDENT-ON* */
1194         }
1195
1196       /* check if available enough 1GB pages for each socket */
1197       /* *INDENT-OFF* */
1198       clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1199         {
1200           u32 pages_avail, page_size, mem;
1201           u8 *s = 0;
1202           u8 *p = 0;
1203           char * numa_path = "/sys/devices/system/node/node%u/";
1204           char * nonnuma_path = "/sys/kernel/mm/";
1205           char * suffix = "hugepages/hugepages-%ukB/free_hugepages%c";
1206           char * path = NULL;
1207           struct stat sb_numa, sb_nonnuma;
1208
1209           p = format(p, numa_path, c);
1210           if (stat(numa_path, &sb_numa) < 0)
1211             sb_numa.st_mode = 0;
1212
1213           if (stat(nonnuma_path, &sb_nonnuma) < 0)
1214             sb_nonnuma.st_mode = 0;
1215
1216           if (S_ISDIR(sb_numa.st_mode)) {
1217             path = (char*)format((u8*)path, "%s%s", p, suffix);
1218           } else if (S_ISDIR(sb_nonnuma.st_mode)) {
1219             path = (char*)format((u8*)path, "%s%s", nonnuma_path, suffix);
1220           } else {
1221             use_1g = 0;
1222             use_2m = 0;
1223             vec_free(p);
1224             break;
1225           }
1226
1227           vec_validate(mem_by_socket, c);
1228           mem = mem_by_socket[c];
1229
1230           page_size = 1024;
1231           pages_avail = 0;
1232           s = format (s, path, page_size * 1024, 0);
1233           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1234           vec_reset_length (s);
1235
1236           if (page_size * pages_avail < mem)
1237             use_1g = 0;
1238
1239           page_size = 2;
1240           pages_avail = 0;
1241           s = format (s, path, page_size * 1024, 0);
1242           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1243           vec_reset_length (s);
1244
1245           if (page_size * pages_avail < mem)
1246             use_2m = 0;
1247
1248           vec_free(s);
1249           vec_free(p);
1250           vec_free(path);
1251       }));
1252       /* *INDENT-ON* */
1253
1254       if (mem_by_socket == 0)
1255         {
1256           error = clib_error_return (0, "mem_by_socket NULL");
1257           goto done;
1258         }
1259       _vec_len (mem_by_socket) = c + 1;
1260
1261       /* regenerate socket_mem string */
1262       vec_foreach_index (x, mem_by_socket)
1263         socket_mem = format (socket_mem, "%s%u",
1264                              socket_mem ? "," : "", mem_by_socket[x]);
1265       socket_mem = format (socket_mem, "%c", 0);
1266
1267       vec_free (mem_by_socket);
1268
1269       rv = mkdir (VPP_RUN_DIR, 0755);
1270       if (rv && errno != EEXIST)
1271         {
1272           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1273                                      VPP_RUN_DIR, errno);
1274           goto done;
1275         }
1276
1277       rv = mkdir (DEFAULT_HUGE_DIR, 0755);
1278       if (rv && errno != EEXIST)
1279         {
1280           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1281                                      DEFAULT_HUGE_DIR, errno);
1282           goto done;
1283         }
1284
1285       if (use_1g && !(less_than_1g && use_2m))
1286         {
1287           rv =
1288             mount ("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, "pagesize=1G");
1289         }
1290       else if (use_2m)
1291         {
1292           rv = mount ("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, NULL);
1293         }
1294       else
1295         {
1296           return clib_error_return (0, "not enough free huge pages");
1297         }
1298
1299       if (rv)
1300         {
1301           error = clib_error_return (0, "mount failed %d", errno);
1302           goto done;
1303         }
1304
1305       tmp = format (0, "--huge-dir%c", 0);
1306       vec_add1 (conf->eal_init_args, tmp);
1307       tmp = format (0, "%s%c", DEFAULT_HUGE_DIR, 0);
1308       vec_add1 (conf->eal_init_args, tmp);
1309       if (!file_prefix)
1310         {
1311           tmp = format (0, "--file-prefix%c", 0);
1312           vec_add1 (conf->eal_init_args, tmp);
1313           tmp = format (0, "vpp%c", 0);
1314           vec_add1 (conf->eal_init_args, tmp);
1315         }
1316     }
1317
1318   vec_free (rte_cmd);
1319   vec_free (ethname);
1320
1321   if (error)
1322     return error;
1323
1324   /* I'll bet that -c and -n must be the first and second args... */
1325   if (!conf->coremask_set_manually)
1326     {
1327       vlib_thread_registration_t *tr;
1328       uword *coremask = 0;
1329       int i;
1330
1331       /* main thread core */
1332       coremask = clib_bitmap_set (coremask, tm->main_lcore, 1);
1333
1334       for (i = 0; i < vec_len (tm->registrations); i++)
1335         {
1336           tr = tm->registrations[i];
1337           coremask = clib_bitmap_or (coremask, tr->coremask);
1338         }
1339
1340       vec_insert (conf->eal_init_args, 2, 1);
1341       conf->eal_init_args[1] = (u8 *) "-c";
1342       tmp = format (0, "%U%c", format_bitmap_hex, coremask, 0);
1343       conf->eal_init_args[2] = tmp;
1344       clib_bitmap_free (coremask);
1345     }
1346
1347   if (!conf->nchannels_set_manually)
1348     {
1349       vec_insert (conf->eal_init_args, 2, 3);
1350       conf->eal_init_args[3] = (u8 *) "-n";
1351       tmp = format (0, "%d", conf->nchannels);
1352       conf->eal_init_args[4] = tmp;
1353     }
1354
1355   if (no_pci == 0 && geteuid () == 0)
1356     dpdk_bind_devices_to_uio (conf);
1357
1358 #define _(x) \
1359     if (devconf->x == 0 && conf->default_devconf.x > 0) \
1360       devconf->x = conf->default_devconf.x ;
1361
1362   /* *INDENT-OFF* */
1363   pool_foreach (devconf, conf->dev_confs, ({
1364
1365     /* default per-device config items */
1366     foreach_dpdk_device_config_item
1367
1368     /* add DPDK EAL whitelist/blacklist entry */
1369     if (num_whitelisted > 0 && devconf->is_blacklisted == 0)
1370       {
1371         tmp = format (0, "-w%c", 0);
1372         vec_add1 (conf->eal_init_args, tmp);
1373         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1374         vec_add1 (conf->eal_init_args, tmp);
1375       }
1376     else if (num_whitelisted == 0 && devconf->is_blacklisted != 0)
1377       {
1378         tmp = format (0, "-b%c", 0);
1379         vec_add1 (conf->eal_init_args, tmp);
1380         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1381         vec_add1 (conf->eal_init_args, tmp);
1382       }
1383   }));
1384   /* *INDENT-ON* */
1385
1386 #undef _
1387
1388   /* set master-lcore */
1389   tmp = format (0, "--master-lcore%c", 0);
1390   vec_add1 (conf->eal_init_args, tmp);
1391   tmp = format (0, "%u%c", tm->main_lcore, 0);
1392   vec_add1 (conf->eal_init_args, tmp);
1393
1394   /* set socket-mem */
1395   tmp = format (0, "--socket-mem%c", 0);
1396   vec_add1 (conf->eal_init_args, tmp);
1397   tmp = format (0, "%s%c", socket_mem, 0);
1398   vec_add1 (conf->eal_init_args, tmp);
1399
1400   /* NULL terminate the "argv" vector, in case of stupidity */
1401   vec_add1 (conf->eal_init_args, 0);
1402   _vec_len (conf->eal_init_args) -= 1;
1403
1404   /* Set up DPDK eal and packet mbuf pool early. */
1405
1406   log_level = (CLIB_DEBUG > 0) ? RTE_LOG_DEBUG : RTE_LOG_NOTICE;
1407
1408   rte_set_log_level (log_level);
1409
1410   vm = vlib_get_main ();
1411
1412   /* make copy of args as rte_eal_init tends to mess up with arg array */
1413   for (i = 1; i < vec_len (conf->eal_init_args); i++)
1414     conf->eal_init_args_str = format (conf->eal_init_args_str, "%s ",
1415                                       conf->eal_init_args[i]);
1416
1417   ret =
1418     rte_eal_init (vec_len (conf->eal_init_args),
1419                   (char **) conf->eal_init_args);
1420
1421   /* lazy umount hugepages */
1422   umount2 (DEFAULT_HUGE_DIR, MNT_DETACH);
1423
1424   if (ret < 0)
1425     return clib_error_return (0, "rte_eal_init returned %d", ret);
1426
1427   /* Dump the physical memory layout prior to creating the mbuf_pool */
1428   fprintf (stdout, "DPDK physical memory layout:\n");
1429   rte_dump_physmem_layout (stdout);
1430
1431   /* main thread 1st */
1432   error = vlib_buffer_pool_create (vm, conf->num_mbufs, rte_socket_id ());
1433   if (error)
1434     return error;
1435
1436   for (i = 0; i < RTE_MAX_LCORE; i++)
1437     {
1438       error = vlib_buffer_pool_create (vm, conf->num_mbufs,
1439                                        rte_lcore_to_socket_id (i));
1440       if (error)
1441         return error;
1442     }
1443
1444 done:
1445   return error;
1446 }
1447
1448 VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
1449
1450 void
1451 dpdk_update_link_state (dpdk_device_t * xd, f64 now)
1452 {
1453   vnet_main_t *vnm = vnet_get_main ();
1454   struct rte_eth_link prev_link = xd->link;
1455   u32 hw_flags = 0;
1456   u8 hw_flags_chg = 0;
1457
1458   /* only update link state for PMD interfaces */
1459   if (xd->dev_type != VNET_DPDK_DEV_ETH)
1460     return;
1461
1462   xd->time_last_link_update = now ? now : xd->time_last_link_update;
1463   memset (&xd->link, 0, sizeof (xd->link));
1464   rte_eth_link_get_nowait (xd->device_index, &xd->link);
1465
1466   if (LINK_STATE_ELOGS)
1467     {
1468       vlib_main_t *vm = vlib_get_main ();
1469       ELOG_TYPE_DECLARE (e) =
1470       {
1471       .format =
1472           "update-link-state: sw_if_index %d, admin_up %d,"
1473           "old link_state %d new link_state %d",.format_args = "i4i1i1i1",};
1474
1475       struct
1476       {
1477         u32 sw_if_index;
1478         u8 admin_up;
1479         u8 old_link_state;
1480         u8 new_link_state;
1481       } *ed;
1482       ed = ELOG_DATA (&vm->elog_main, e);
1483       ed->sw_if_index = xd->vlib_sw_if_index;
1484       ed->admin_up = (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) != 0;
1485       ed->old_link_state = (u8)
1486         vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index);
1487       ed->new_link_state = (u8) xd->link.link_status;
1488     }
1489
1490   if ((xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP) &&
1491       ((xd->link.link_status != 0) ^
1492        vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index)))
1493     {
1494       hw_flags_chg = 1;
1495       hw_flags |= (xd->link.link_status ? VNET_HW_INTERFACE_FLAG_LINK_UP : 0);
1496     }
1497
1498   if (hw_flags_chg || (xd->link.link_duplex != prev_link.link_duplex))
1499     {
1500       hw_flags_chg = 1;
1501       switch (xd->link.link_duplex)
1502         {
1503         case ETH_LINK_HALF_DUPLEX:
1504           hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
1505           break;
1506         case ETH_LINK_FULL_DUPLEX:
1507           hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
1508           break;
1509         default:
1510           break;
1511         }
1512     }
1513 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
1514   if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1515     {
1516       hw_flags_chg = 1;
1517       switch (xd->link.link_speed)
1518         {
1519         case ETH_SPEED_NUM_10M:
1520           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1521           break;
1522         case ETH_SPEED_NUM_100M:
1523           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1524           break;
1525         case ETH_SPEED_NUM_1G:
1526           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1527           break;
1528         case ETH_SPEED_NUM_10G:
1529           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1530           break;
1531         case ETH_SPEED_NUM_40G:
1532           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1533           break;
1534         case 0:
1535           break;
1536         default:
1537           clib_warning ("unknown link speed %d", xd->link.link_speed);
1538           break;
1539         }
1540     }
1541 #else
1542   if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1543     {
1544       hw_flags_chg = 1;
1545       switch (xd->link.link_speed)
1546         {
1547         case ETH_LINK_SPEED_10:
1548           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1549           break;
1550         case ETH_LINK_SPEED_100:
1551           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1552           break;
1553         case ETH_LINK_SPEED_1000:
1554           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1555           break;
1556         case ETH_LINK_SPEED_10000:
1557           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1558           break;
1559         case ETH_LINK_SPEED_40G:
1560           hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1561           break;
1562         case 0:
1563           break;
1564         default:
1565           clib_warning ("unknown link speed %d", xd->link.link_speed);
1566           break;
1567         }
1568     }
1569 #endif
1570   if (hw_flags_chg)
1571     {
1572       if (LINK_STATE_ELOGS)
1573         {
1574           vlib_main_t *vm = vlib_get_main ();
1575
1576           ELOG_TYPE_DECLARE (e) =
1577           {
1578           .format =
1579               "update-link-state: sw_if_index %d, new flags %d",.format_args
1580               = "i4i4",};
1581
1582           struct
1583           {
1584             u32 sw_if_index;
1585             u32 flags;
1586           } *ed;
1587           ed = ELOG_DATA (&vm->elog_main, e);
1588           ed->sw_if_index = xd->vlib_sw_if_index;
1589           ed->flags = hw_flags;
1590         }
1591       vnet_hw_interface_set_flags (vnm, xd->vlib_hw_if_index, hw_flags);
1592     }
1593 }
1594
1595 static uword
1596 dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
1597 {
1598   clib_error_t *error;
1599   vnet_main_t *vnm = vnet_get_main ();
1600   dpdk_main_t *dm = &dpdk_main;
1601   ethernet_main_t *em = &ethernet_main;
1602   dpdk_device_t *xd;
1603   vlib_thread_main_t *tm = vlib_get_thread_main ();
1604 #if DPDK_VHOST_USER
1605   void *vu_state;
1606 #endif
1607   int i;
1608
1609   error = dpdk_lib_init (dm);
1610
1611   /*
1612    * Turn on the input node if we found some devices to drive
1613    * and we're not running worker threads or i/o threads
1614    */
1615
1616   if (error == 0 && vec_len (dm->devices) > 0)
1617     {
1618       if (tm->n_vlib_mains == 1)
1619         vlib_node_set_state (vm, dpdk_input_node.index,
1620                              VLIB_NODE_STATE_POLLING);
1621       else
1622         for (i = 0; i < tm->n_vlib_mains; i++)
1623           if (vec_len (dm->devices_by_cpu[i]) > 0)
1624             vlib_node_set_state (vlib_mains[i], dpdk_input_node.index,
1625                                  VLIB_NODE_STATE_POLLING);
1626     }
1627
1628   if (error)
1629     clib_error_report (error);
1630
1631 #if DPDK_VHOST_USER
1632   dpdk_vhost_user_process_init (&vu_state);
1633 #endif
1634
1635   tm->worker_thread_release = 1;
1636
1637   f64 now = vlib_time_now (vm);
1638   vec_foreach (xd, dm->devices)
1639   {
1640     dpdk_update_link_state (xd, now);
1641   }
1642
1643   {
1644     /*
1645      * Extra set up for bond interfaces:
1646      *  1. Setup MACs for bond interfaces and their slave links which was set
1647      *     in dpdk_port_setup() but needs to be done again here to take effect.
1648      *  2. Set up info for bond interface related CLI support.
1649      */
1650     int nports = rte_eth_dev_count ();
1651     if (nports > 0)
1652       {
1653         for (i = 0; i < nports; i++)
1654           {
1655             struct rte_eth_dev_info dev_info;
1656             rte_eth_dev_info_get (i, &dev_info);
1657             if (!dev_info.driver_name)
1658               dev_info.driver_name = dev_info.pci_dev->driver->name;
1659             ASSERT (dev_info.driver_name);
1660             if (strncmp (dev_info.driver_name, "rte_bond_pmd", 12) == 0)
1661               {
1662                 u8 addr[6];
1663                 u8 slink[16];
1664                 int nlink = rte_eth_bond_slaves_get (i, slink, 16);
1665                 if (nlink > 0)
1666                   {
1667                     vnet_hw_interface_t *bhi;
1668                     ethernet_interface_t *bei;
1669                     int rv;
1670
1671                     /* Get MAC of 1st slave link */
1672                     rte_eth_macaddr_get (slink[0],
1673                                          (struct ether_addr *) addr);
1674                     /* Set MAC of bounded interface to that of 1st slave link */
1675                     rv =
1676                       rte_eth_bond_mac_address_set (i,
1677                                                     (struct ether_addr *)
1678                                                     addr);
1679                     if (rv < 0)
1680                       clib_warning ("Failed to set MAC address");
1681
1682                     /* Populate MAC of bonded interface in VPP hw tables */
1683                     bhi =
1684                       vnet_get_hw_interface (vnm,
1685                                              dm->devices[i].vlib_hw_if_index);
1686                     bei =
1687                       pool_elt_at_index (em->interfaces, bhi->hw_instance);
1688                     clib_memcpy (bhi->hw_address, addr, 6);
1689                     clib_memcpy (bei->address, addr, 6);
1690                     /* Init l3 packet size allowed on bonded interface */
1691                     bhi->max_packet_bytes = ETHERNET_MAX_PACKET_BYTES;
1692                     bhi->max_l3_packet_bytes[VLIB_RX] =
1693                       bhi->max_l3_packet_bytes[VLIB_TX] =
1694                       ETHERNET_MAX_PACKET_BYTES - sizeof (ethernet_header_t);
1695                     while (nlink >= 1)
1696                       {         /* for all slave links */
1697                         int slave = slink[--nlink];
1698                         dpdk_device_t *sdev = &dm->devices[slave];
1699                         vnet_hw_interface_t *shi;
1700                         vnet_sw_interface_t *ssi;
1701                         /* Add MAC to all slave links except the first one */
1702                         if (nlink)
1703                           rte_eth_dev_mac_addr_add (slave,
1704                                                     (struct ether_addr *)
1705                                                     addr, 0);
1706                         /* Set slaves bitmap for bonded interface */
1707                         bhi->bond_info =
1708                           clib_bitmap_set (bhi->bond_info,
1709                                            sdev->vlib_hw_if_index, 1);
1710                         /* Set slave link flags on slave interface */
1711                         shi =
1712                           vnet_get_hw_interface (vnm, sdev->vlib_hw_if_index);
1713                         ssi =
1714                           vnet_get_sw_interface (vnm, sdev->vlib_sw_if_index);
1715                         shi->bond_info = VNET_HW_INTERFACE_BOND_INFO_SLAVE;
1716                         ssi->flags |= VNET_SW_INTERFACE_FLAG_BOND_SLAVE;
1717
1718                         /* Set l3 packet size allowed as the lowest of slave */
1719                         if (bhi->max_l3_packet_bytes[VLIB_RX] >
1720                             shi->max_l3_packet_bytes[VLIB_RX])
1721                           bhi->max_l3_packet_bytes[VLIB_RX] =
1722                             bhi->max_l3_packet_bytes[VLIB_TX] =
1723                             shi->max_l3_packet_bytes[VLIB_RX];
1724
1725                         /* Set max packet size allowed as the lowest of slave */
1726                         if (bhi->max_packet_bytes > shi->max_packet_bytes)
1727                           bhi->max_packet_bytes = shi->max_packet_bytes;
1728                       }
1729                   }
1730               }
1731           }
1732       }
1733   }
1734
1735   while (1)
1736     {
1737       /*
1738        * check each time through the loop in case intervals are changed
1739        */
1740       f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
1741         dm->link_state_poll_interval : dm->stat_poll_interval;
1742
1743       vlib_process_wait_for_event_or_clock (vm, min_wait);
1744
1745       if (dpdk_get_admin_up_down_in_progress ())
1746         /* skip the poll if an admin up down is in progress (on any interface) */
1747         continue;
1748
1749       vec_foreach (xd, dm->devices)
1750       {
1751         f64 now = vlib_time_now (vm);
1752         if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
1753           dpdk_update_counters (xd, now);
1754         if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
1755           dpdk_update_link_state (xd, now);
1756
1757 #if DPDK_VHOST_USER
1758         if (xd->dev_type == VNET_DPDK_DEV_VHOST_USER)
1759           if (dpdk_vhost_user_process_if (vm, xd, vu_state) != 0)
1760             continue;
1761 #endif
1762       }
1763     }
1764
1765 #if DPDK_VHOST_USER
1766   dpdk_vhost_user_process_cleanup (vu_state);
1767 #endif
1768
1769   return 0;
1770 }
1771
1772 /* *INDENT-OFF* */
1773 VLIB_REGISTER_NODE (dpdk_process_node,static) = {
1774     .function = dpdk_process,
1775     .type = VLIB_NODE_TYPE_PROCESS,
1776     .name = "dpdk-process",
1777     .process_log2_n_stack_bytes = 17,
1778 };
1779 /* *INDENT-ON* */
1780
1781 int
1782 dpdk_set_stat_poll_interval (f64 interval)
1783 {
1784   if (interval < DPDK_MIN_STATS_POLL_INTERVAL)
1785     return (VNET_API_ERROR_INVALID_VALUE);
1786
1787   dpdk_main.stat_poll_interval = interval;
1788
1789   return 0;
1790 }
1791
1792 int
1793 dpdk_set_link_state_poll_interval (f64 interval)
1794 {
1795   if (interval < DPDK_MIN_LINK_POLL_INTERVAL)
1796     return (VNET_API_ERROR_INVALID_VALUE);
1797
1798   dpdk_main.link_state_poll_interval = interval;
1799
1800   return 0;
1801 }
1802
1803 clib_error_t *
1804 dpdk_init (vlib_main_t * vm)
1805 {
1806   dpdk_main_t *dm = &dpdk_main;
1807   vlib_node_t *ei;
1808   clib_error_t *error = 0;
1809   vlib_thread_main_t *tm = vlib_get_thread_main ();
1810
1811   /* verify that structs are cacheline aligned */
1812   ASSERT (offsetof (dpdk_device_t, cacheline0) == 0);
1813   ASSERT (offsetof (dpdk_device_t, cacheline1) == CLIB_CACHE_LINE_BYTES);
1814   ASSERT (offsetof (dpdk_worker_t, cacheline0) == 0);
1815   ASSERT (offsetof (frame_queue_trace_t, cacheline0) == 0);
1816
1817   dm->vlib_main = vm;
1818   dm->vnet_main = vnet_get_main ();
1819   dm->conf = &dpdk_config_main;
1820
1821   ei = vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
1822   if (ei == 0)
1823     return clib_error_return (0, "ethernet-input node AWOL");
1824
1825   dm->ethernet_input_node_index = ei->index;
1826
1827   dm->conf->nchannels = 4;
1828   dm->conf->num_mbufs = dm->conf->num_mbufs ? dm->conf->num_mbufs : NB_MBUF;
1829   vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
1830
1831   dm->dpdk_device_by_kni_port_id = hash_create (0, sizeof (uword));
1832   dm->vu_sw_if_index_by_listener_fd = hash_create (0, sizeof (uword));
1833   dm->vu_sw_if_index_by_sock_fd = hash_create (0, sizeof (uword));
1834
1835   /* $$$ use n_thread_stacks since it's known-good at this point */
1836   vec_validate (dm->recycle, tm->n_thread_stacks - 1);
1837
1838   /* initialize EFD (early fast discard) default settings */
1839   dm->efd.enabled = DPDK_EFD_DISABLED;
1840   dm->efd.queue_hi_thresh = ((DPDK_EFD_DEFAULT_DEVICE_QUEUE_HI_THRESH_PCT *
1841                               DPDK_NB_RX_DESC_10GE) / 100);
1842   dm->efd.consec_full_frames_hi_thresh =
1843     DPDK_EFD_DEFAULT_CONSEC_FULL_FRAMES_HI_THRESH;
1844
1845   /* vhost-user coalescence frames defaults */
1846   dm->conf->vhost_coalesce_frames = 32;
1847   dm->conf->vhost_coalesce_time = 1e-3;
1848
1849   /* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
1850   dm->buffer_flags_template =
1851     (VLIB_BUFFER_TOTAL_LENGTH_VALID
1852      | IP_BUFFER_L4_CHECKSUM_COMPUTED | IP_BUFFER_L4_CHECKSUM_CORRECT);
1853
1854   dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
1855   dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
1856
1857   /* init CLI */
1858   if ((error = vlib_call_init_function (vm, dpdk_cli_init)))
1859     return error;
1860
1861   return error;
1862 }
1863
1864 VLIB_INIT_FUNCTION (dpdk_init);
1865
1866
1867 /*
1868  * fd.io coding-style-patch-verification: ON
1869  *
1870  * Local Variables:
1871  * eval: (c-set-style "gnu")
1872  * End:
1873  */