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->admin_up) {
  75     vnet_hw_interface_set_flags (dm->vnet_main, xd->vlib_hw_if_index, 0);
  76     rte_eth_dev_stop (xd->device_index);
  77   }
  78
  79   rv = rte_eth_dev_configure (xd->device_index, xd->rx_q_used,
  80                               xd->tx_q_used, &xd->port_conf);
  81
  82   if (rv < 0)
  83     return clib_error_return (0, "rte_eth_dev_configure[%d]: err %d",
  84                               xd->device_index, rv);
  85
  86   /* Set up one TX-queue per worker thread */
  87   for (j = 0; j < xd->tx_q_used; j++)
  88     {
  89       rv = rte_eth_tx_queue_setup(xd->device_index, j, xd->nb_tx_desc,
  90                                  xd->cpu_socket, &xd->tx_conf);
  91
  92       /* retry with any other CPU socket */
  93       if (rv < 0)
  94         rv = rte_eth_tx_queue_setup(xd->device_index, j, xd->nb_tx_desc,
  95                                    SOCKET_ID_ANY, &xd->tx_conf);
  96       if (rv < 0)
  97         break;
  98     }
  99
 100     if (rv < 0)
 101       return clib_error_return (0, "rte_eth_tx_queue_setup[%d]: err %d",
 102                                 xd->device_index, rv);
 103
 104   for (j = 0; j < xd->rx_q_used; j++)
 105     {
 106
 107       rv = rte_eth_rx_queue_setup(xd->device_index, j, xd->nb_rx_desc,
 108                                   xd->cpu_socket, 0,
 109                                   bm->pktmbuf_pools[xd->cpu_socket_id_by_queue[j]]);
 110
 111       /* retry with any other CPU socket */
 112       if (rv < 0)
 113         rv = rte_eth_rx_queue_setup(xd->device_index, j, xd->nb_rx_desc,
 114                                     SOCKET_ID_ANY, 0,
 115                                     bm->pktmbuf_pools[xd->cpu_socket_id_by_queue[j]]);
 116       if (rv < 0)
 117         return clib_error_return (0, "rte_eth_rx_queue_setup[%d]: err %d",
 118                                   xd->device_index, rv);
 119     }
 120
 121   if (xd->admin_up) {
 122       int rv;
 123       rv = rte_eth_dev_start (xd->device_index);
 124       if (rv < 0)
 125         clib_warning ("rte_eth_dev_start %d returned %d",
 126                       xd->device_index, rv);
 127   }
 128   return 0;
 129 }
 130
 131 static u32 dpdk_flag_change (vnet_main_t * vnm,
 132                              vnet_hw_interface_t * hi,
 133                              u32 flags)
 134 {
 135   dpdk_main_t * dm = &dpdk_main;
 136   dpdk_device_t * xd = vec_elt_at_index (dm->devices, hi->dev_instance);
 137   u32 old = 0;
 138
 139   if (ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC(flags))
 140     {
 141       old = xd->promisc;
 142       xd->promisc = flags & ETHERNET_INTERFACE_FLAG_ACCEPT_ALL;
 143
 144       if (xd->admin_up)
 145         {
 146           if (xd->promisc)
 147             rte_eth_promiscuous_enable(xd->device_index);
 148           else
 149             rte_eth_promiscuous_disable(xd->device_index);
 150         }
 151     }
 152   else if (ETHERNET_INTERFACE_FLAG_CONFIG_MTU(flags))
 153     {
 154       /*
 155        * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
 156        *            driver to dynamically change the mtu.  If/when the
 157        *            VIC firmware gets fixed, then this should be removed.
 158        */
 159       if (xd->pmd == VNET_DPDK_PMD_ENIC)
 160         {
 161           struct rte_eth_dev_info dev_info;
 162
 163           /*
 164            * Restore mtu to what has been set by CIMC in the firmware cfg.
 165            */
 166           rte_eth_dev_info_get(xd->device_index, &dev_info);
 167           hi->max_packet_bytes = dev_info.max_rx_pktlen;
 168
 169           vlib_cli_output (vlib_get_main(),
 170                            "Cisco VIC mtu can only be changed "
 171                            "using CIMC then rebooting the server!");
 172         }
 173       else
 174         {
 175           int rv;
 176
 177           xd->port_conf.rxmode.max_rx_pkt_len = hi->max_packet_bytes;
 178
 179           if (xd->admin_up)
 180             rte_eth_dev_stop (xd->device_index);
 181
 182     rv = rte_eth_dev_configure
 183       (xd->device_index,
 184        xd->rx_q_used,
 185        xd->tx_q_used,
 186        &xd->port_conf);
 187
 188           if (rv < 0)
 189             vlib_cli_output (vlib_get_main(),
 190                              "rte_eth_dev_configure[%d]: err %d",
 191                              xd->device_index, rv);
 192
 193           rte_eth_dev_set_mtu(xd->device_index, hi->max_packet_bytes);
 194
 195           if (xd->admin_up)
 196             {
 197               int rv = rte_eth_dev_start (xd->device_index);
 198               if (rv < 0)
 199                 clib_warning ("rte_eth_dev_start %d returned %d",
 200                               xd->device_index, rv);
 201             }
 202         }
 203     }
 204   return old;
 205 }
 206
 207 void
 208 dpdk_device_lock_init(dpdk_device_t * xd)
 209 {
 210   int q;
 211   vec_validate(xd->lockp, xd->tx_q_used - 1);
 212   for (q = 0; q < xd->tx_q_used; q++)
 213     {
 214       xd->lockp[q] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
 215                                              CLIB_CACHE_LINE_BYTES);
 216       memset ((void *) xd->lockp[q], 0, CLIB_CACHE_LINE_BYTES);
 217   }
 218   xd->need_txlock = 1;
 219 }
 220
 221 void
 222 dpdk_device_lock_free(dpdk_device_t * xd)
 223 {
 224   int q;
 225
 226   for (q = 0; q < vec_len(xd->lockp); q++)
 227     clib_mem_free((void *) xd->lockp[q]);
 228   vec_free(xd->lockp);
 229   xd->lockp = 0;
 230   xd->need_txlock = 0;
 231 }
 232
 233 static clib_error_t *
 234 dpdk_lib_init (dpdk_main_t * dm)
 235 {
 236   u32 nports;
 237   u32 nb_desc = 0;
 238   int i;
 239   clib_error_t * error;
 240   vlib_main_t * vm = vlib_get_main();
 241   vlib_thread_main_t * tm = vlib_get_thread_main();
 242   vlib_node_runtime_t * rt;
 243   vnet_sw_interface_t * sw;
 244   vnet_hw_interface_t * hi;
 245   dpdk_device_t * xd;
 246   vlib_pci_addr_t last_pci_addr;
 247   u32 last_pci_addr_port = 0;
 248   vlib_thread_registration_t * tr;
 249   uword * p;
 250
 251   u32 next_cpu = 0;
 252   u8 af_packet_port_id = 0;
 253   last_pci_addr.as_u32 = ~0;
 254
 255   dm->input_cpu_first_index = 0;
 256   dm->input_cpu_count = 1;
 257
 258   rt = vlib_node_get_runtime (vm, dpdk_input_node.index);
 259   rt->function = dpdk_input_multiarch_select();
 260
 261   /* find out which cpus will be used for input */
 262   p = hash_get_mem (tm->thread_registrations_by_name, "workers");
 263   tr = p ? (vlib_thread_registration_t *) p[0] : 0;
 264
 265   if (tr && tr->count > 0)
 266     {
 267       dm->input_cpu_first_index = tr->first_index;
 268       dm->input_cpu_count = tr->count;
 269     }
 270
 271   vec_validate_aligned (dm->devices_by_cpu, tm->n_vlib_mains - 1,
 272                         CLIB_CACHE_LINE_BYTES);
 273
 274   vec_validate_aligned (dm->workers, tm->n_vlib_mains - 1,
 275                         CLIB_CACHE_LINE_BYTES);
 276
 277   nports = rte_eth_dev_count();
 278   if (nports < 1)
 279     {
 280       clib_warning ("DPDK drivers found no ports...");
 281     }
 282
 283   if (CLIB_DEBUG > 0)
 284     clib_warning ("DPDK drivers found %d ports...", nports);
 285
 286   /*
 287    * All buffers are all allocated from the same rte_mempool.
 288    * Thus they all have the same number of data bytes.
 289    */
 290   dm->vlib_buffer_free_list_index =
 291       vlib_buffer_get_or_create_free_list (
 292           vm, VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES, "dpdk rx");
 293
 294   if (dm->conf->enable_tcp_udp_checksum)
 295     dm->buffer_flags_template &= ~(IP_BUFFER_L4_CHECKSUM_CORRECT
 296                                    | IP_BUFFER_L4_CHECKSUM_COMPUTED);
 297
 298   for (i = 0; i < nports; i++)
 299     {
 300       u8 addr[6];
 301       u8 vlan_strip = 0;
 302       int j;
 303       struct rte_eth_dev_info dev_info;
 304       clib_error_t * rv;
 305       struct rte_eth_link l;
 306       dpdk_device_config_t * devconf = 0;
 307       vlib_pci_addr_t pci_addr;
 308       uword * p = 0;
 309
 310       rte_eth_dev_info_get(i, &dev_info);
 311       if (dev_info.pci_dev) /* bonded interface has no pci info */
 312         {
 313           pci_addr.domain = dev_info.pci_dev->addr.domain;
 314           pci_addr.bus = dev_info.pci_dev->addr.bus;
 315           pci_addr.slot = dev_info.pci_dev->addr.devid;
 316           pci_addr.function = dev_info.pci_dev->addr.function;
 317           p = hash_get (dm->conf->device_config_index_by_pci_addr, pci_addr.as_u32);
 318         }
 319
 320       if (p)
 321         devconf = pool_elt_at_index (dm->conf->dev_confs, p[0]);
 322       else
 323         devconf = &dm->conf->default_devconf;
 324
 325       /* Create vnet interface */
 326       vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
 327       xd->nb_rx_desc = DPDK_NB_RX_DESC_DEFAULT;
 328       xd->nb_tx_desc = DPDK_NB_TX_DESC_DEFAULT;
 329       xd->cpu_socket = (i8) rte_eth_dev_socket_id(i);
 330
 331       /* Handle interface naming for devices with multiple ports sharing same PCI ID */
 332       if (dev_info.pci_dev)
 333         {
 334           struct rte_eth_dev_info di = {0};
 335           rte_eth_dev_info_get (i + 1, &di);
 336           if (di.pci_dev && pci_addr.as_u32 != last_pci_addr.as_u32 &&
 337               memcmp(&dev_info.pci_dev->addr, &di.pci_dev->addr, sizeof(struct rte_pci_addr)) == 0)
 338             {
 339               xd->interface_name_suffix = format (0, "0");
 340               last_pci_addr.as_u32 = pci_addr.as_u32;
 341               last_pci_addr_port = i;
 342             }
 343           else if (pci_addr.as_u32 == last_pci_addr.as_u32)
 344             {
 345               xd->interface_name_suffix = format (0, "%u", i - last_pci_addr_port);
 346             }
 347           else
 348             {
 349               last_pci_addr.as_u32 = ~0;
 350             }
 351         }
 352       else
 353         last_pci_addr.as_u32 = ~0;
 354
 355       clib_memcpy(&xd->tx_conf, &dev_info.default_txconf,
 356              sizeof(struct rte_eth_txconf));
 357       if (dm->conf->no_multi_seg)
 358         {
 359           xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
 360           port_conf_template.rxmode.jumbo_frame = 0;
 361         }
 362       else
 363         {
 364           xd->tx_conf.txq_flags &= ~ETH_TXQ_FLAGS_NOMULTSEGS;
 365           port_conf_template.rxmode.jumbo_frame = 1;
 366         }
 367
 368       clib_memcpy(&xd->port_conf, &port_conf_template, sizeof(struct rte_eth_conf));
 369
 370       xd->tx_q_used = clib_min(dev_info.max_tx_queues, tm->n_vlib_mains);
 371
 372       if (devconf->num_tx_queues > 0 && devconf->num_tx_queues < xd->tx_q_used)
 373         xd->tx_q_used = clib_min(xd->tx_q_used, devconf->num_tx_queues);
 374
 375       if (devconf->num_rx_queues > 1 && dm->use_rss == 0)
 376         {
 377           rt->function = dpdk_input_rss_multiarch_select();
 378           dm->use_rss = 1;
 379         }
 380
 381       if (devconf->num_rx_queues > 1 && dev_info.max_rx_queues >= devconf->num_rx_queues)
 382         {
 383           xd->rx_q_used = devconf->num_rx_queues;
 384           xd->port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
 385           if (devconf->rss_fn == 0)
 386             xd->port_conf.rx_adv_conf.rss_conf.rss_hf = ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP;
 387           else
 388             xd->port_conf.rx_adv_conf.rss_conf.rss_hf = devconf->rss_fn;
 389         }
 390       else
 391         xd->rx_q_used = 1;
 392
 393       xd->dev_type = VNET_DPDK_DEV_ETH;
 394
 395       /* workaround for drivers not setting driver_name */
 396       if ((!dev_info.driver_name) && (dev_info.pci_dev))
 397         dev_info.driver_name = dev_info.pci_dev->driver->name;
 398       ASSERT(dev_info.driver_name);
 399
 400       if (!xd->pmd) {
 401
 402
 403 #define _(s,f) else if (dev_info.driver_name &&                 \
 404                         !strcmp(dev_info.driver_name, s))       \
 405                  xd->pmd = VNET_DPDK_PMD_##f;
 406         if (0)
 407           ;
 408         foreach_dpdk_pmd
 409 #undef _
 410         else
 411           xd->pmd = VNET_DPDK_PMD_UNKNOWN;
 412
 413
 414         switch (xd->pmd) {
 415           /* 1G adapters */
 416           case VNET_DPDK_PMD_E1000EM:
 417           case VNET_DPDK_PMD_IGB:
 418           case VNET_DPDK_PMD_IGBVF:
 419             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 420             break;
 421
 422           /* 10G adapters */
 423           case VNET_DPDK_PMD_IXGBE:
 424           case VNET_DPDK_PMD_IXGBEVF:
 425           case VNET_DPDK_PMD_THUNDERX:
 426             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 427             xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 428             xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 429             break;
 430           case VNET_DPDK_PMD_DPAA2:
 431             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 432             break;
 433
 434           /* Cisco VIC */
 435           case VNET_DPDK_PMD_ENIC:
 436             rte_eth_link_get_nowait(i, &l);
 437             xd->nb_rx_desc = DPDK_NB_RX_DESC_ENIC;
 438             if (l.link_speed == 40000)
 439               {
 440                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 441                 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 442               }
 443             else
 444               {
 445                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 446                 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 447               }
 448             break;
 449
 450           /* Intel Fortville */
 451           case VNET_DPDK_PMD_I40E:
 452           case VNET_DPDK_PMD_I40EVF:
 453             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 454             xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 455             xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 456
 457             switch (dev_info.pci_dev->id.device_id) {
 458               case I40E_DEV_ID_10G_BASE_T:
 459               case I40E_DEV_ID_SFP_XL710:
 460                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 461                 break;
 462               case I40E_DEV_ID_QSFP_A:
 463               case I40E_DEV_ID_QSFP_B:
 464               case I40E_DEV_ID_QSFP_C:
 465                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 466                 break;
 467               case I40E_DEV_ID_VF:
 468                 rte_eth_link_get_nowait(i, &l);
 469                 xd->port_type = l.link_speed == 10000 ?
 470                   VNET_DPDK_PORT_TYPE_ETH_10G : VNET_DPDK_PORT_TYPE_ETH_40G;
 471                 break;
 472               default:
 473                 xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 474             }
 475             break;
 476
 477           case VNET_DPDK_PMD_CXGBE:
 478             switch (dev_info.pci_dev->id.device_id) {
 479               case 0x540d: /* T580-CR */
 480               case 0x5410: /* T580-LP-cr */
 481                 xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 482                 xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 483                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_40G;
 484                 break;
 485               case 0x5403: /* T540-CR */
 486                 xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 487                 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 488                 xd->port_type = VNET_DPDK_PORT_TYPE_ETH_10G;
 489                 break;
 490               default:
 491                 xd->nb_rx_desc = DPDK_NB_RX_DESC_10GE;
 492                 xd->nb_tx_desc = DPDK_NB_TX_DESC_10GE;
 493                 xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 494             }
 495             break;
 496
 497           /* Intel Red Rock Canyon */
 498           case VNET_DPDK_PMD_FM10K:
 499             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_SWITCH;
 500             xd->nb_rx_desc = DPDK_NB_RX_DESC_40GE;
 501             xd->nb_tx_desc = DPDK_NB_TX_DESC_40GE;
 502             break;
 503
 504           /* virtio */
 505           case VNET_DPDK_PMD_VIRTIO:
 506             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 507             xd->nb_rx_desc = DPDK_NB_RX_DESC_VIRTIO;
 508             xd->nb_tx_desc = DPDK_NB_TX_DESC_VIRTIO;
 509             break;
 510
 511           /* vmxnet3 */
 512           case VNET_DPDK_PMD_VMXNET3:
 513             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_1G;
 514             xd->tx_conf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
 515             break;
 516
 517           case VNET_DPDK_PMD_AF_PACKET:
 518             xd->port_type = VNET_DPDK_PORT_TYPE_AF_PACKET;
 519             xd->af_packet_port_id = af_packet_port_id++;
 520             break;
 521
 522           case VNET_DPDK_PMD_BOND:
 523             xd->port_type = VNET_DPDK_PORT_TYPE_ETH_BOND;
 524             break;
 525
 526           default:
 527             xd->port_type = VNET_DPDK_PORT_TYPE_UNKNOWN;
 528         }
 529
 530         if (devconf->num_rx_desc)
 531           xd->nb_rx_desc = devconf->num_rx_desc;
 532
 533         if (devconf->num_tx_desc)
 534           xd->nb_tx_desc = devconf->num_tx_desc;
 535       }
 536
 537       /*
 538        * Ensure default mtu is not > the mtu read from the hardware.
 539        * Otherwise rte_eth_dev_configure() will fail and the port will
 540        * not be available.
 541        */
 542       if (ETHERNET_MAX_PACKET_BYTES > dev_info.max_rx_pktlen)
 543         {
 544           /*
 545            * This device does not support the platforms's max frame
 546            * size. Use it's advertised mru instead.
 547            */
 548           xd->port_conf.rxmode.max_rx_pkt_len = dev_info.max_rx_pktlen;
 549         }
 550       else
 551         {
 552           xd->port_conf.rxmode.max_rx_pkt_len = ETHERNET_MAX_PACKET_BYTES;
 553
 554           /*
 555            * Some platforms do not account for Ethernet FCS (4 bytes) in
 556            * MTU calculations. To interop with them increase mru but only
 557            * if the device's settings can support it.
 558            */
 559           if ((dev_info.max_rx_pktlen >= (ETHERNET_MAX_PACKET_BYTES + 4)) &&
 560               xd->port_conf.rxmode.hw_strip_crc)
 561             {
 562               /*
 563                * Allow additional 4 bytes (for Ethernet FCS). These bytes are
 564                * stripped by h/w and so will not consume any buffer memory.
 565                */
 566               xd->port_conf.rxmode.max_rx_pkt_len += 4;
 567             }
 568         }
 569
 570 #if RTE_VERSION < RTE_VERSION_NUM(16, 4, 0, 0)
 571       /*
 572        * Older VMXNET3 driver doesn't support jumbo / multi-buffer pkts
 573        */
 574       if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
 575         {
 576           xd->port_conf.rxmode.max_rx_pkt_len = 1518;
 577           xd->port_conf.rxmode.jumbo_frame = 0;
 578         }
 579 #endif
 580
 581       if (xd->pmd == VNET_DPDK_PMD_AF_PACKET)
 582         {
 583           f64 now = vlib_time_now(vm);
 584           u32 rnd;
 585           rnd = (u32) (now * 1e6);
 586           rnd = random_u32 (&rnd);
 587           clib_memcpy (addr+2, &rnd, sizeof(rnd));
 588           addr[0] = 2;
 589           addr[1] = 0xfe;
 590         }
 591       else
 592         rte_eth_macaddr_get(i,(struct ether_addr *)addr);
 593
 594       if (xd->tx_q_used < tm->n_vlib_mains)
 595         dpdk_device_lock_init(xd);
 596
 597       xd->device_index = xd - dm->devices;
 598       ASSERT(i == xd->device_index);
 599       xd->per_interface_next_index = ~0;
 600
 601       /* assign interface to input thread */
 602       dpdk_device_and_queue_t * dq;
 603       int q;
 604
 605       if (devconf->workers)
 606         {
 607           int i;
 608           q = 0;
 609           clib_bitmap_foreach (i, devconf->workers, ({
 610             int cpu = dm->input_cpu_first_index + i;
 611             unsigned lcore = vlib_worker_threads[cpu].dpdk_lcore_id;
 612             vec_validate(xd->cpu_socket_id_by_queue, q);
 613             xd->cpu_socket_id_by_queue[q] = rte_lcore_to_socket_id(lcore);
 614             vec_add2(dm->devices_by_cpu[cpu], dq, 1);
 615             dq->device = xd->device_index;
 616             dq->queue_id = q++;
 617           }));
 618         }
 619       else
 620         for (q = 0; q < xd->rx_q_used; q++)
 621           {
 622             int cpu = dm->input_cpu_first_index + next_cpu;
 623             unsigned lcore = vlib_worker_threads[cpu].dpdk_lcore_id;
 624
 625             /*
 626              * numa node for worker thread handling this queue
 627              * needed for taking buffers from the right mempool
 628              */
 629             vec_validate(xd->cpu_socket_id_by_queue, q);
 630             xd->cpu_socket_id_by_queue[q] = rte_lcore_to_socket_id(lcore);
 631
 632             /*
 633              * construct vector of (device,queue) pairs for each worker thread
 634              */
 635             vec_add2(dm->devices_by_cpu[cpu], dq, 1);
 636             dq->device = xd->device_index;
 637             dq->queue_id = q;
 638
 639             next_cpu++;
 640             if (next_cpu == dm->input_cpu_count)
 641               next_cpu = 0;
 642           }
 643
 644       vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
 645                             CLIB_CACHE_LINE_BYTES);
 646       for (j = 0; j < tm->n_vlib_mains; j++)
 647         {
 648           vec_validate_ha (xd->tx_vectors[j], DPDK_TX_RING_SIZE,
 649                            sizeof(tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
 650           vec_reset_length (xd->tx_vectors[j]);
 651         }
 652
 653       vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
 654                             CLIB_CACHE_LINE_BYTES);
 655       for (j = 0; j< xd->rx_q_used; j++)
 656         {
 657           vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE-1,
 658                                 CLIB_CACHE_LINE_BYTES);
 659           vec_reset_length (xd->rx_vectors[j]);
 660         }
 661
 662       rv = dpdk_port_setup(dm, xd);
 663
 664       if (rv)
 665         return rv;
 666
 667       /* count the number of descriptors used for this device */
 668       nb_desc += xd->nb_rx_desc + xd->nb_tx_desc * xd->tx_q_used;
 669
 670       error = ethernet_register_interface
 671         (dm->vnet_main,
 672          dpdk_device_class.index,
 673          xd->device_index,
 674          /* ethernet address */ addr,
 675          &xd->vlib_hw_if_index,
 676          dpdk_flag_change);
 677       if (error)
 678         return error;
 679
 680       sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 681       xd->vlib_sw_if_index = sw->sw_if_index;
 682       hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 683
 684       /*
 685        * DAW-FIXME: The Cisco VIC firmware does not provide an api for a
 686        *            driver to dynamically change the mtu.  If/when the
 687        *            VIC firmware gets fixed, then this should be removed.
 688        */
 689       if (xd->pmd == VNET_DPDK_PMD_ENIC)
 690         {
 691           /*
 692            * Initialize mtu to what has been set by CIMC in the firmware cfg.
 693            */
 694           hi->max_packet_bytes = dev_info.max_rx_pktlen;
 695           if (devconf->vlan_strip_offload != DPDK_DEVICE_VLAN_STRIP_OFF)
 696             vlan_strip = 1; /* remove vlan tag from VIC port by default */
 697           else
 698             clib_warning("VLAN strip disabled for interface\n");
 699         }
 700       else if (devconf->vlan_strip_offload == DPDK_DEVICE_VLAN_STRIP_ON)
 701         vlan_strip = 1;
 702
 703       if (vlan_strip)
 704         {
 705           int vlan_off;
 706           vlan_off = rte_eth_dev_get_vlan_offload(xd->device_index);
 707           vlan_off |= ETH_VLAN_STRIP_OFFLOAD;
 708           if (rte_eth_dev_set_vlan_offload(xd->device_index, vlan_off) == 0)
 709             clib_warning("VLAN strip enabled for interface\n");
 710           else
 711             clib_warning("VLAN strip cannot be supported by interface\n");
 712         }
 713
 714 #if RTE_VERSION < RTE_VERSION_NUM(16, 4, 0, 0)
 715       /*
 716        * Older VMXNET3 driver doesn't support jumbo / multi-buffer pkts
 717        */
 718       else if (xd->pmd == VNET_DPDK_PMD_VMXNET3)
 719           hi->max_packet_bytes = 1518;
 720 #endif
 721
 722       hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
 723               xd->port_conf.rxmode.max_rx_pkt_len - sizeof(ethernet_header_t);
 724
 725      rte_eth_dev_set_mtu(xd->device_index, hi->max_packet_bytes);
 726     }
 727
 728 #ifdef RTE_LIBRTE_KNI
 729   if (dm->conf->num_kni) {
 730     clib_warning("Initializing KNI interfaces...");
 731     rte_kni_init(dm->conf->num_kni);
 732     for (i = 0; i < dm->conf->num_kni; i++)
 733     {
 734       u8 addr[6];
 735       int j;
 736
 737       /* Create vnet interface */
 738       vec_add2_aligned (dm->devices, xd, 1, CLIB_CACHE_LINE_BYTES);
 739       xd->dev_type = VNET_DPDK_DEV_KNI;
 740
 741       xd->device_index = xd - dm->devices;
 742       ASSERT(nports + i == xd->device_index);
 743       xd->per_interface_next_index = ~0;
 744       xd->kni_port_id = i;
 745       xd->cpu_socket = -1;
 746       hash_set (dm->dpdk_device_by_kni_port_id, i, xd - dm->devices);
 747       xd->rx_q_used = 1;
 748
 749       /* assign interface to input thread */
 750       dpdk_device_and_queue_t * dq;
 751       vec_add2(dm->devices_by_cpu[dm->input_cpu_first_index], dq, 1);
 752       dq->device = xd->device_index;
 753       dq->queue_id = 0;
 754
 755       vec_validate_aligned (xd->tx_vectors, tm->n_vlib_mains,
 756                             CLIB_CACHE_LINE_BYTES);
 757       for (j = 0; j < tm->n_vlib_mains; j++)
 758         {
 759           vec_validate_ha (xd->tx_vectors[j], DPDK_TX_RING_SIZE,
 760                            sizeof(tx_ring_hdr_t), CLIB_CACHE_LINE_BYTES);
 761           vec_reset_length (xd->tx_vectors[j]);
 762         }
 763
 764       vec_validate_aligned (xd->rx_vectors, xd->rx_q_used,
 765                             CLIB_CACHE_LINE_BYTES);
 766       for (j = 0; j< xd->rx_q_used; j++)
 767         {
 768           vec_validate_aligned (xd->rx_vectors[j], VLIB_FRAME_SIZE-1,
 769                                 CLIB_CACHE_LINE_BYTES);
 770           vec_reset_length (xd->rx_vectors[j]);
 771         }
 772
 773       /* FIXME Set up one TX-queue per worker thread */
 774
 775       {
 776         f64 now = vlib_time_now(vm);
 777         u32 rnd;
 778         rnd = (u32) (now * 1e6);
 779         rnd = random_u32 (&rnd);
 780
 781         clib_memcpy (addr+2, &rnd, sizeof(rnd));
 782         addr[0] = 2;
 783         addr[1] = 0xfe;
 784       }
 785
 786       error = ethernet_register_interface
 787         (dm->vnet_main,
 788          dpdk_device_class.index,
 789          xd->device_index,
 790          /* ethernet address */ addr,
 791          &xd->vlib_hw_if_index,
 792          dpdk_flag_change);
 793
 794       if (error)
 795         return error;
 796
 797       sw = vnet_get_hw_sw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 798       xd->vlib_sw_if_index = sw->sw_if_index;
 799       hi = vnet_get_hw_interface (dm->vnet_main, xd->vlib_hw_if_index);
 800     }
 801   }
 802 #endif
 803
 804   if (nb_desc > dm->conf->num_mbufs)
 805     clib_warning ("%d mbufs allocated but total rx/tx ring size is %d\n",
 806                   dm->conf->num_mbufs, nb_desc);
 807
 808   /* init next vhost-user if index */
 809   dm->next_vu_if_id = 0;
 810
 811   return 0;
 812 }
 813
 814 static void
 815 dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
 816 {
 817   vlib_pci_main_t * pm = &pci_main;
 818   clib_error_t * error;
 819   vlib_pci_device_t * d;
 820   pci_config_header_t * c;
 821   u8 * pci_addr = 0;
 822   int num_whitelisted = vec_len (conf->dev_confs);
 823
 824   pool_foreach (d, pm->pci_devs, ({
 825     dpdk_device_config_t * devconf = 0;
 826     c = &d->config0.header;
 827     vec_reset_length (pci_addr);
 828     pci_addr = format (pci_addr, "%U%c", format_vlib_pci_addr, &d->bus_address, 0);
 829
 830     if (c->device_class != PCI_CLASS_NETWORK_ETHERNET)
 831       continue;
 832
 833     if (num_whitelisted)
 834       {
 835         uword * p = hash_get (conf->device_config_index_by_pci_addr, d->bus_address.as_u32);
 836
 837         if (!p)
 838           continue;
 839
 840         devconf = pool_elt_at_index (conf->dev_confs, p[0]);
 841       }
 842
 843     /* virtio */
 844     if (c->vendor_id == 0x1af4 && c->device_id == 0x1000)
 845       ;
 846     /* vmxnet3 */
 847     else if (c->vendor_id == 0x15ad && c->device_id == 0x07b0)
 848       ;
 849     /* all Intel devices */
 850     else if (c->vendor_id == 0x8086)
 851       ;
 852     /* Cisco VIC */
 853     else if (c->vendor_id == 0x1137 && c->device_id == 0x0043)
 854       ;
 855     /* Chelsio T4/T5 */
 856     else if (c->vendor_id == 0x1425 && (c->device_id & 0xe000) == 0x4000)
 857       ;
 858     else
 859       {
 860         clib_warning ("Unsupported Ethernet PCI device 0x%04x:0x%04x found "
 861                       "at PCI address %s\n", (u16) c->vendor_id, (u16) c->device_id,
 862                       pci_addr);
 863         continue;
 864       }
 865
 866     error = vlib_pci_bind_to_uio (d, (char *) conf->uio_driver_name);
 867
 868     if (error)
 869       {
 870         if (devconf == 0)
 871           {
 872             pool_get (conf->dev_confs, devconf);
 873             hash_set (conf->device_config_index_by_pci_addr, d->bus_address.as_u32,
 874                       devconf - conf->dev_confs);
 875             devconf->pci_addr.as_u32 = d->bus_address.as_u32;
 876           }
 877         devconf->is_blacklisted = 1;
 878         clib_error_report (error);
 879       }
 880   }));
 881   vec_free (pci_addr);
 882 }
 883
 884 static clib_error_t *
 885 dpdk_device_config (dpdk_config_main_t * conf, vlib_pci_addr_t pci_addr, unformat_input_t * input, u8 is_default)
 886 {
 887   clib_error_t * error = 0;
 888   uword * p;
 889   dpdk_device_config_t * devconf;
 890   unformat_input_t sub_input;
 891
 892   if (is_default)
 893     {
 894       devconf = &conf->default_devconf;
 895     }
 896   else
 897     {
 898       p = hash_get (conf->device_config_index_by_pci_addr, pci_addr.as_u32);
 899
 900       if (!p)
 901         {
 902           pool_get (conf->dev_confs, devconf);
 903           hash_set (conf->device_config_index_by_pci_addr, pci_addr.as_u32, devconf - conf->dev_confs);
 904         }
 905       else
 906         return clib_error_return(0, "duplicate configuration for PCI address %U",
 907                                  format_vlib_pci_addr, &pci_addr);
 908     }
 909
 910   devconf->pci_addr.as_u32 = pci_addr.as_u32;
 911
 912   if (!input)
 913     return 0;
 914
 915   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
 916     {
 917       if (unformat (input, "num-rx-queues %u", &devconf->num_rx_queues))
 918         ;
 919       else if (unformat (input, "num-tx-queues %u", &devconf->num_tx_queues))
 920         ;
 921       else if (unformat (input, "num-rx-desc %u", &devconf->num_rx_desc))
 922         ;
 923       else if (unformat (input, "num-tx-desc %u", &devconf->num_tx_desc))
 924         ;
 925       else if (unformat (input, "workers %U", unformat_bitmap_list,
 926                          &devconf->workers))
 927         ;
 928       else if (unformat (input, "rss %U", unformat_vlib_cli_sub_input, &sub_input))
 929         {
 930           error = unformat_rss_fn(&sub_input, &devconf->rss_fn);
 931           if (error)
 932             break;
 933         }
 934       else if (unformat (input, "vlan-strip-offload off"))
 935           devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_OFF;
 936       else if (unformat (input, "vlan-strip-offload on"))
 937           devconf->vlan_strip_offload = DPDK_DEVICE_VLAN_STRIP_ON;
 938       else
 939         {
 940           error = clib_error_return (0, "unknown input `%U'",
 941                                      format_unformat_error, input);
 942           break;
 943         }
 944     }
 945
 946   if (error)
 947     return error;
 948
 949   if (devconf->workers && devconf->num_rx_queues == 0)
 950     devconf->num_rx_queues = clib_bitmap_count_set_bits(devconf->workers);
 951   else if (devconf->workers &&
 952            clib_bitmap_count_set_bits(devconf->workers) != devconf->num_rx_queues)
 953     error = clib_error_return (0, "%U: number of worker threadds must be "
 954                                "equal to number of rx queues",
 955                                format_vlib_pci_addr, &pci_addr);
 956
 957   return error;
 958 }
 959
 960 static clib_error_t *
 961 dpdk_config (vlib_main_t * vm, unformat_input_t * input)
 962 {
 963   clib_error_t * error = 0;
 964   dpdk_main_t * dm = &dpdk_main;
 965   dpdk_config_main_t * conf = &dpdk_config_main;
 966   vlib_thread_main_t * tm = vlib_get_thread_main();
 967   dpdk_device_config_t * devconf;
 968   vlib_pci_addr_t pci_addr;
 969   unformat_input_t sub_input;
 970   u8 * s, * tmp = 0;
 971   u8 * rte_cmd = 0, * ethname = 0;
 972   u32 log_level;
 973   int ret, i;
 974   int num_whitelisted = 0;
 975   u8 no_pci = 0;
 976   u8 no_huge = 0;
 977   u8 huge_dir = 0;
 978   u8 file_prefix = 0;
 979   u8 * socket_mem = 0;
 980
 981   conf->device_config_index_by_pci_addr = hash_create (0, sizeof (uword));
 982
 983   // MATT-FIXME: inverted virtio-vhost logic to use virtio by default
 984   conf->use_virtio_vhost = 1;
 985
 986   while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)
 987     {
 988       /* Prime the pump */
 989       if (unformat (input, "no-hugetlb"))
 990         {
 991           vec_add1 (conf->eal_init_args, (u8 *) "no-huge");
 992           no_huge = 1;
 993         }
 994
 995       else if (unformat (input, "enable-tcp-udp-checksum"))
 996         conf->enable_tcp_udp_checksum = 1;
 997
 998       else if (unformat (input, "decimal-interface-names"))
 999         conf->interface_name_format_decimal = 1;
1000
1001       else if (unformat (input, "no-multi-seg"))
1002         conf->no_multi_seg = 1;
1003
1004       else if (unformat (input, "dev default %U", unformat_vlib_cli_sub_input,
1005                          &sub_input))
1006         {
1007           error = dpdk_device_config (conf, (vlib_pci_addr_t) (u32) ~1, &sub_input, 1);
1008
1009           if (error)
1010             return error;
1011         }
1012       else if (unformat (input, "dev %U %U", unformat_vlib_pci_addr, &pci_addr,
1013                          unformat_vlib_cli_sub_input, &sub_input))
1014         {
1015           error = dpdk_device_config (conf, pci_addr, &sub_input, 0);
1016
1017           if (error)
1018             return error;
1019
1020           num_whitelisted++;
1021         }
1022       else if (unformat (input, "dev %U", unformat_vlib_pci_addr, &pci_addr))
1023         {
1024           error = dpdk_device_config (conf, pci_addr, 0, 0);
1025
1026           if (error)
1027             return error;
1028
1029           num_whitelisted++;
1030         }
1031       else if (unformat (input, "num-mbufs %d", &conf->num_mbufs))
1032         ;
1033       else if (unformat (input, "kni %d", &conf->num_kni))
1034         ;
1035       else if (unformat (input, "uio-driver %s", &conf->uio_driver_name))
1036         ;
1037       else if (unformat (input, "socket-mem %s", &socket_mem))
1038         ;
1039       else if (unformat (input, "vhost-user-coalesce-frames %d", &conf->vhost_coalesce_frames))
1040         ;
1041       else if (unformat (input, "vhost-user-coalesce-time %f", &conf->vhost_coalesce_time))
1042         ;
1043       else if (unformat (input, "enable-vhost-user"))
1044         conf->use_virtio_vhost = 0;
1045       else if (unformat (input, "poll-sleep %d", &dm->poll_sleep))
1046         ;
1047
1048 #define _(a)                                    \
1049       else if (unformat(input, #a))             \
1050         {                                       \
1051           if (!strncmp(#a, "no-pci", 6))        \
1052             no_pci = 1;                         \
1053           tmp = format (0, "--%s%c", #a, 0);    \
1054           vec_add1 (conf->eal_init_args, tmp);    \
1055         }
1056       foreach_eal_double_hyphen_predicate_arg
1057 #undef _
1058
1059 #define _(a)                                          \
1060         else if (unformat(input, #a " %s", &s))       \
1061           {                                           \
1062             if (!strncmp(#a, "huge-dir", 8))          \
1063               huge_dir = 1;                           \
1064             else if (!strncmp(#a, "file-prefix", 11)) \
1065               file_prefix = 1;                        \
1066             tmp = format (0, "--%s%c", #a, 0);        \
1067             vec_add1 (conf->eal_init_args, tmp);      \
1068             vec_add1 (s, 0);                          \
1069             vec_add1 (conf->eal_init_args, s);        \
1070           }
1071         foreach_eal_double_hyphen_arg
1072 #undef _
1073
1074 #define _(a,b)                                          \
1075           else if (unformat(input, #a " %s", &s))       \
1076             {                                           \
1077               tmp = format (0, "-%s%c", #b, 0);         \
1078               vec_add1 (conf->eal_init_args, tmp);      \
1079               vec_add1 (s, 0);                          \
1080               vec_add1 (conf->eal_init_args, s);        \
1081             }
1082           foreach_eal_single_hyphen_arg
1083 #undef _
1084
1085 #define _(a,b)                                          \
1086             else if (unformat(input, #a " %s", &s))     \
1087               {                                         \
1088                 tmp = format (0, "-%s%c", #b, 0);       \
1089                 vec_add1 (conf->eal_init_args, tmp);    \
1090                 vec_add1 (s, 0);                        \
1091                 vec_add1 (conf->eal_init_args, s);      \
1092                 conf->a##_set_manually = 1;             \
1093               }
1094             foreach_eal_single_hyphen_mandatory_arg
1095 #undef _
1096
1097           else if (unformat(input, "default"))
1098             ;
1099
1100           else
1101             {
1102               error = clib_error_return (0, "unknown input `%U'",
1103                                          format_unformat_error, input);
1104               goto done;
1105             }
1106     }
1107
1108   if (!conf->uio_driver_name)
1109     conf->uio_driver_name = format (0, "igb_uio%c", 0);
1110
1111   /*
1112    * Use 1G huge pages if available.
1113    */
1114   if (!no_huge && !huge_dir)
1115     {
1116       u32 x, * mem_by_socket = 0;
1117       uword c = 0;
1118       u8 use_1g = 1;
1119       u8 use_2m = 1;
1120       u8 less_than_1g = 1;
1121       int rv;
1122
1123       umount(DEFAULT_HUGE_DIR);
1124
1125       /* Process "socket-mem" parameter value */
1126       if (vec_len (socket_mem))
1127         {
1128           unformat_input_t in;
1129           unformat_init_vector(&in, socket_mem);
1130           while (unformat_check_input (&in) != UNFORMAT_END_OF_INPUT)
1131             {
1132               if (unformat (&in, "%u,", &x))
1133                 ;
1134               else if (unformat (&in, "%u", &x))
1135                 ;
1136               else if (unformat (&in, ","))
1137                 x = 0;
1138               else
1139                 break;
1140
1141               vec_add1(mem_by_socket, x);
1142
1143               if (x > 1023)
1144                 less_than_1g = 0;
1145             }
1146           /* Note: unformat_free vec_frees(in.buffer), aka socket_mem... */
1147           unformat_free(&in);
1148           socket_mem = 0;
1149         }
1150       else
1151         {
1152           clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1153             {
1154               vec_validate(mem_by_socket, c);
1155               mem_by_socket[c] = 256; /* default per-socket mem */
1156             }
1157           ));
1158         }
1159
1160       /* check if available enough 1GB pages for each socket */
1161       clib_bitmap_foreach (c, tm->cpu_socket_bitmap, (
1162         {
1163           u32 pages_avail, page_size, mem;
1164           u8 *s = 0;
1165           u8 *p = 0;
1166           char * numa_path = "/sys/devices/system/node/node%u/";
1167           char * nonnuma_path = "/sys/kernel/mm/";
1168           char * suffix = "hugepages/hugepages-%ukB/free_hugepages%c";
1169           char * path = NULL;
1170           struct stat sb_numa, sb_nonnuma;
1171
1172           p = format(p, numa_path, c);
1173           stat(numa_path, &sb_numa);
1174           stat(nonnuma_path, &sb_nonnuma);
1175
1176           if (S_ISDIR(sb_numa.st_mode)) {
1177             path = (char*)format((u8*)path, "%s%s", p, suffix);
1178           } else if (S_ISDIR(sb_nonnuma.st_mode)) {
1179             path = (char*)format((u8*)path, "%s%s", nonnuma_path, suffix);
1180           } else {
1181             use_1g = 0;
1182             use_2m = 0;
1183             vec_free(p);
1184             break;
1185           }
1186
1187           vec_validate(mem_by_socket, c);
1188           mem = mem_by_socket[c];
1189
1190           page_size = 1024;
1191           pages_avail = 0;
1192           s = format (s, path, page_size * 1024, 0);
1193           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1194           vec_reset_length (s);
1195
1196           if (page_size * pages_avail < mem)
1197             use_1g = 0;
1198
1199           page_size = 2;
1200           pages_avail = 0;
1201           s = format (s, path, page_size * 1024, 0);
1202           vlib_sysfs_read ((char *) s, "%u", &pages_avail);
1203           vec_reset_length (s);
1204
1205           if (page_size * pages_avail < mem)
1206             use_2m = 0;
1207
1208           vec_free(s);
1209           vec_free(p);
1210           vec_free(path);
1211       }));
1212
1213       if (mem_by_socket == 0)
1214         {
1215           error = clib_error_return (0, "mem_by_socket NULL");
1216           goto done;
1217         }
1218       _vec_len (mem_by_socket) = c + 1;
1219
1220       /* regenerate socket_mem string */
1221       vec_foreach_index (x, mem_by_socket)
1222         socket_mem = format (socket_mem, "%s%u",
1223                              socket_mem ? "," : "",
1224                              mem_by_socket[x]);
1225       socket_mem = format (socket_mem, "%c", 0);
1226
1227       vec_free (mem_by_socket);
1228
1229       rv = mkdir(VPP_RUN_DIR, 0755);
1230       if (rv && errno != EEXIST)
1231         {
1232           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1233                                      VPP_RUN_DIR, errno);
1234           goto done;
1235         }
1236
1237       rv = mkdir(DEFAULT_HUGE_DIR, 0755);
1238       if (rv && errno != EEXIST)
1239         {
1240           error = clib_error_return (0, "mkdir '%s' failed errno %d",
1241                                      DEFAULT_HUGE_DIR, errno);
1242           goto done;
1243         }
1244
1245       if (use_1g && !(less_than_1g && use_2m))
1246         {
1247           rv = mount("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, "pagesize=1G");
1248         }
1249       else if (use_2m)
1250         {
1251           rv = mount("none", DEFAULT_HUGE_DIR, "hugetlbfs", 0, NULL);
1252         }
1253       else
1254         {
1255           return clib_error_return (0, "not enough free huge pages");
1256         }
1257
1258       if (rv)
1259         {
1260           error = clib_error_return (0, "mount failed %d", errno);
1261           goto done;
1262         }
1263
1264       tmp = format (0, "--huge-dir%c", 0);
1265       vec_add1 (conf->eal_init_args, tmp);
1266       tmp = format (0, "%s%c", DEFAULT_HUGE_DIR, 0);
1267       vec_add1 (conf->eal_init_args, tmp);
1268       if (!file_prefix)
1269         {
1270           tmp = format (0, "--file-prefix%c", 0);
1271           vec_add1 (conf->eal_init_args, tmp);
1272           tmp = format (0, "vpp%c", 0);
1273           vec_add1 (conf->eal_init_args, tmp);
1274         }
1275     }
1276
1277   vec_free (rte_cmd);
1278   vec_free (ethname);
1279
1280   if (error)
1281     return error;
1282
1283   /* I'll bet that -c and -n must be the first and second args... */
1284   if (!conf->coremask_set_manually)
1285     {
1286       vlib_thread_registration_t * tr;
1287       uword * coremask = 0;
1288       int i;
1289
1290       /* main thread core */
1291       coremask = clib_bitmap_set(coremask, tm->main_lcore, 1);
1292
1293       for (i = 0; i < vec_len (tm->registrations); i++)
1294         {
1295           tr = tm->registrations[i];
1296           coremask = clib_bitmap_or(coremask, tr->coremask);
1297         }
1298
1299       vec_insert (conf->eal_init_args, 2, 1);
1300       conf->eal_init_args[1] = (u8 *) "-c";
1301       tmp = format (0, "%U%c", format_bitmap_hex, coremask, 0);
1302       conf->eal_init_args[2] = tmp;
1303       clib_bitmap_free(coremask);
1304     }
1305
1306   if (!conf->nchannels_set_manually)
1307     {
1308       vec_insert (conf->eal_init_args, 2, 3);
1309       conf->eal_init_args[3] = (u8 *) "-n";
1310       tmp = format (0, "%d", conf->nchannels);
1311       conf->eal_init_args[4] = tmp;
1312     }
1313
1314   if (no_pci == 0 && geteuid() == 0)
1315     dpdk_bind_devices_to_uio(conf);
1316
1317 #define _(x) \
1318     if (devconf->x == 0 && conf->default_devconf.x > 0) \
1319       devconf->x = conf->default_devconf.x ;
1320
1321   pool_foreach (devconf, conf->dev_confs, ({
1322
1323     /* default per-device config items */
1324     foreach_dpdk_device_config_item
1325
1326     /* add DPDK EAL whitelist/blacklist entry */
1327     if (num_whitelisted > 0 && devconf->is_blacklisted == 0)
1328       {
1329         tmp = format (0, "-w%c", 0);
1330         vec_add1 (conf->eal_init_args, tmp);
1331         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1332         vec_add1 (conf->eal_init_args, tmp);
1333       }
1334     else if (num_whitelisted == 0 && devconf->is_blacklisted != 0)
1335       {
1336         tmp = format (0, "-b%c", 0);
1337         vec_add1 (conf->eal_init_args, tmp);
1338         tmp = format (0, "%U%c", format_vlib_pci_addr, &devconf->pci_addr, 0);
1339         vec_add1 (conf->eal_init_args, tmp);
1340       }
1341   }));
1342
1343 #undef _
1344
1345   /* set master-lcore */
1346   tmp = format (0, "--master-lcore%c", 0);
1347   vec_add1 (conf->eal_init_args, tmp);
1348   tmp = format (0, "%u%c", tm->main_lcore, 0);
1349   vec_add1 (conf->eal_init_args, tmp);
1350
1351   /* set socket-mem */
1352   tmp = format (0, "--socket-mem%c", 0);
1353   vec_add1 (conf->eal_init_args, tmp);
1354   tmp = format (0, "%s%c", socket_mem, 0);
1355   vec_add1 (conf->eal_init_args, tmp);
1356
1357   /* NULL terminate the "argv" vector, in case of stupidity */
1358   vec_add1 (conf->eal_init_args, 0);
1359   _vec_len(conf->eal_init_args) -= 1;
1360
1361   /* Set up DPDK eal and packet mbuf pool early. */
1362
1363   log_level = (CLIB_DEBUG > 0) ? RTE_LOG_DEBUG : RTE_LOG_NOTICE;
1364
1365   rte_set_log_level (log_level);
1366
1367   vm = vlib_get_main ();
1368
1369   /* make copy of args as rte_eal_init tends to mess up with arg array */
1370   for (i = 1; i < vec_len(conf->eal_init_args); i++)
1371     conf->eal_init_args_str = format(conf->eal_init_args_str, "%s ",
1372                                      conf->eal_init_args[i]);
1373
1374   ret = rte_eal_init(vec_len(conf->eal_init_args), (char **) conf->eal_init_args);
1375
1376   /* lazy umount hugepages */
1377   umount2(DEFAULT_HUGE_DIR, MNT_DETACH);
1378
1379   if (ret < 0)
1380     return clib_error_return (0, "rte_eal_init returned %d", ret);
1381
1382   /* Dump the physical memory layout prior to creating the mbuf_pool */
1383   fprintf(stdout, "DPDK physical memory layout:\n");
1384   rte_dump_physmem_layout(stdout);
1385
1386   /* main thread 1st */
1387   error = vlib_buffer_pool_create(vm, conf->num_mbufs, rte_socket_id());
1388   if (error)
1389     return error;
1390
1391   for (i = 0; i < RTE_MAX_LCORE; i++)
1392     {
1393       error = vlib_buffer_pool_create(vm, conf->num_mbufs,
1394                                       rte_lcore_to_socket_id(i));
1395       if (error)
1396         return error;
1397     }
1398
1399  done:
1400   return error;
1401 }
1402
1403 VLIB_CONFIG_FUNCTION (dpdk_config, "dpdk");
1404
1405 void dpdk_update_link_state (dpdk_device_t * xd, f64 now)
1406 {
1407     vnet_main_t * vnm = vnet_get_main();
1408     struct rte_eth_link prev_link = xd->link;
1409     u32 hw_flags =  0;
1410     u8 hw_flags_chg = 0;
1411
1412     /* only update link state for PMD interfaces */
1413     if (xd->dev_type != VNET_DPDK_DEV_ETH)
1414       return;
1415
1416     xd->time_last_link_update = now ? now : xd->time_last_link_update;
1417     memset(&xd->link, 0, sizeof(xd->link));
1418     rte_eth_link_get_nowait (xd->device_index, &xd->link);
1419
1420     if (LINK_STATE_ELOGS)
1421       {
1422         vlib_main_t * vm = vlib_get_main();
1423         ELOG_TYPE_DECLARE(e) = {
1424           .format =
1425           "update-link-state: sw_if_index %d, admin_up %d,"
1426           "old link_state %d new link_state %d",
1427           .format_args = "i4i1i1i1",
1428         };
1429
1430         struct { u32 sw_if_index; u8 admin_up;
1431           u8 old_link_state; u8 new_link_state;} *ed;
1432         ed = ELOG_DATA (&vm->elog_main, e);
1433         ed->sw_if_index = xd->vlib_sw_if_index;
1434         ed->admin_up = xd->admin_up;
1435         ed->old_link_state = (u8)
1436           vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index);
1437         ed->new_link_state = (u8) xd->link.link_status;
1438       }
1439
1440     if ((xd->admin_up == 1) &&
1441         ((xd->link.link_status != 0) ^
1442          vnet_hw_interface_is_link_up (vnm, xd->vlib_hw_if_index)))
1443       {
1444         hw_flags_chg = 1;
1445         hw_flags |= (xd->link.link_status ?
1446                      VNET_HW_INTERFACE_FLAG_LINK_UP: 0);
1447       }
1448
1449     if (hw_flags_chg || (xd->link.link_duplex != prev_link.link_duplex))
1450       {
1451         hw_flags_chg = 1;
1452         switch (xd->link.link_duplex)
1453           {
1454           case ETH_LINK_HALF_DUPLEX:
1455             hw_flags |= VNET_HW_INTERFACE_FLAG_HALF_DUPLEX;
1456             break;
1457           case ETH_LINK_FULL_DUPLEX:
1458             hw_flags |= VNET_HW_INTERFACE_FLAG_FULL_DUPLEX;
1459             break;
1460           default:
1461             break;
1462           }
1463       }
1464 #if RTE_VERSION >= RTE_VERSION_NUM(16, 4, 0, 0)
1465     if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1466       {
1467         hw_flags_chg = 1;
1468         switch (xd->link.link_speed)
1469           {
1470           case ETH_SPEED_NUM_10M:
1471             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1472             break;
1473           case ETH_SPEED_NUM_100M:
1474             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1475             break;
1476           case ETH_SPEED_NUM_1G:
1477             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1478             break;
1479           case ETH_SPEED_NUM_10G:
1480             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1481             break;
1482           case ETH_SPEED_NUM_40G:
1483             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1484             break;
1485     case 0:
1486       break;
1487     default:
1488       clib_warning("unknown link speed %d", xd->link.link_speed);
1489             break;
1490           }
1491       }
1492 #else
1493     if (hw_flags_chg || (xd->link.link_speed != prev_link.link_speed))
1494       {
1495         hw_flags_chg = 1;
1496         switch (xd->link.link_speed)
1497           {
1498           case ETH_LINK_SPEED_10:
1499             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10M;
1500             break;
1501           case ETH_LINK_SPEED_100:
1502             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
1503             break;
1504           case ETH_LINK_SPEED_1000:
1505             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
1506             break;
1507           case ETH_LINK_SPEED_10000:
1508             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
1509             break;
1510           case ETH_LINK_SPEED_40G:
1511             hw_flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
1512             break;
1513     case 0:
1514       break;
1515     default:
1516       clib_warning("unknown link speed %d", xd->link.link_speed);
1517             break;
1518           }
1519       }
1520 #endif
1521     if (hw_flags_chg)
1522       {
1523         if (LINK_STATE_ELOGS)
1524           {
1525             vlib_main_t * vm = vlib_get_main();
1526
1527             ELOG_TYPE_DECLARE(e) = {
1528               .format = "update-link-state: sw_if_index %d, new flags %d",
1529               .format_args = "i4i4",
1530             };
1531
1532             struct { u32 sw_if_index; u32 flags; } *ed;
1533             ed = ELOG_DATA (&vm->elog_main, e);
1534             ed->sw_if_index = xd->vlib_sw_if_index;
1535             ed->flags = hw_flags;
1536           }
1537         vnet_hw_interface_set_flags (vnm, xd->vlib_hw_if_index, hw_flags);
1538       }
1539 }
1540
1541 static uword
1542 dpdk_process (vlib_main_t * vm,
1543               vlib_node_runtime_t * rt,
1544               vlib_frame_t * f)
1545 {
1546   clib_error_t * error;
1547   vnet_main_t * vnm = vnet_get_main();
1548   dpdk_main_t * dm = &dpdk_main;
1549   ethernet_main_t * em = &ethernet_main;
1550   dpdk_device_t * xd;
1551   vlib_thread_main_t * tm = vlib_get_thread_main();
1552 #if DPDK_VHOST_USER
1553   void *vu_state;
1554 #endif
1555   int i;
1556
1557   error = dpdk_lib_init (dm);
1558
1559   /*
1560    * Turn on the input node if we found some devices to drive
1561    * and we're not running worker threads or i/o threads
1562    */
1563
1564   if (error == 0 && vec_len(dm->devices) > 0)
1565     {
1566         if (tm->n_vlib_mains == 1)
1567           vlib_node_set_state (vm, dpdk_input_node.index,
1568                                VLIB_NODE_STATE_POLLING);
1569         else
1570           for (i=0; i < tm->n_vlib_mains; i++)
1571             if (vec_len(dm->devices_by_cpu[i]) > 0)
1572               vlib_node_set_state (vlib_mains[i], dpdk_input_node.index,
1573                                    VLIB_NODE_STATE_POLLING);
1574     }
1575
1576   if (error)
1577     clib_error_report (error);
1578
1579 #if DPDK_VHOST_USER
1580   dpdk_vhost_user_process_init(&vu_state);
1581 #endif
1582
1583   tm->worker_thread_release = 1;
1584
1585   f64 now = vlib_time_now (vm);
1586   vec_foreach (xd, dm->devices)
1587     {
1588       dpdk_update_link_state (xd, now);
1589     }
1590
1591 { /*
1592    * Extra set up for bond interfaces:
1593    *  1. Setup MACs for bond interfaces and their slave links which was set
1594    *     in dpdk_port_setup() but needs to be done again here to take effect.
1595    *  2. Set up info for bond interface related CLI support.
1596    */
1597   int nports = rte_eth_dev_count();
1598   if (nports > 0) {
1599       for (i = 0; i < nports; i++) {
1600           struct rte_eth_dev_info dev_info;
1601           rte_eth_dev_info_get(i, &dev_info);
1602           if (!dev_info.driver_name)
1603               dev_info.driver_name = dev_info.pci_dev->driver->name;
1604           ASSERT(dev_info.driver_name);
1605           if (strncmp(dev_info.driver_name, "rte_bond_pmd", 12) == 0) {
1606               u8  addr[6];
1607               u8  slink[16];
1608               int nlink = rte_eth_bond_slaves_get(i, slink, 16);
1609               if (nlink > 0) {
1610                   vnet_hw_interface_t * bhi;
1611                   ethernet_interface_t * bei;
1612                   /* Get MAC of 1st slave link */
1613                   rte_eth_macaddr_get(slink[0], (struct ether_addr *)addr);
1614                   /* Set MAC of bounded interface to that of 1st slave link */
1615                   rte_eth_bond_mac_address_set(i, (struct ether_addr *)addr);
1616                   /* Populate MAC of bonded interface in VPP hw tables */
1617                   bhi = vnet_get_hw_interface(
1618                       vnm, dm->devices[i].vlib_hw_if_index);
1619                   bei = pool_elt_at_index(em->interfaces, bhi->hw_instance);
1620                   clib_memcpy(bhi->hw_address, addr, 6);
1621                   clib_memcpy(bei->address, addr, 6);
1622                   /* Init l3 packet size allowed on bonded interface */
1623                   bhi->max_l3_packet_bytes[VLIB_RX] =
1624                   bhi->max_l3_packet_bytes[VLIB_TX] =
1625                       ETHERNET_MAX_PACKET_BYTES - sizeof(ethernet_header_t);
1626                   while (nlink >= 1) { /* for all slave links */
1627                       int slave = slink[--nlink];
1628                       dpdk_device_t * sdev = &dm->devices[slave];
1629                       vnet_hw_interface_t * shi;
1630                       vnet_sw_interface_t * ssi;
1631                       /* Add MAC to all slave links except the first one */
1632                       if (nlink) rte_eth_dev_mac_addr_add(
1633                           slave, (struct ether_addr *)addr, 0);
1634                       /* Set slaves bitmap for bonded interface */
1635                       bhi->bond_info = clib_bitmap_set(
1636                           bhi->bond_info, sdev->vlib_hw_if_index, 1);
1637                       /* Set slave link flags on slave interface */
1638                       shi = vnet_get_hw_interface(vnm, sdev->vlib_hw_if_index);
1639                       ssi = vnet_get_sw_interface(vnm, sdev->vlib_sw_if_index);
1640                       shi->bond_info = VNET_HW_INTERFACE_BOND_INFO_SLAVE;
1641                       ssi->flags |= VNET_SW_INTERFACE_FLAG_BOND_SLAVE;
1642                   }
1643               }
1644           }
1645       }
1646   }
1647 }
1648
1649   while (1)
1650     {
1651       /*
1652        * check each time through the loop in case intervals are changed
1653        */
1654       f64 min_wait = dm->link_state_poll_interval < dm->stat_poll_interval ?
1655                      dm->link_state_poll_interval : dm->stat_poll_interval;
1656
1657       vlib_process_wait_for_event_or_clock (vm, min_wait);
1658
1659       if (dpdk_get_admin_up_down_in_progress())
1660           /* skip the poll if an admin up down is in progress (on any interface) */
1661           continue;
1662
1663       vec_foreach (xd, dm->devices)
1664         {
1665           f64 now = vlib_time_now (vm);
1666           if ((now - xd->time_last_stats_update) >= dm->stat_poll_interval)
1667             dpdk_update_counters (xd, now);
1668           if ((now - xd->time_last_link_update) >= dm->link_state_poll_interval)
1669             dpdk_update_link_state (xd, now);
1670
1671 #if DPDK_VHOST_USER
1672       if (xd->dev_type == VNET_DPDK_DEV_VHOST_USER)
1673           if (dpdk_vhost_user_process_if(vm, xd, vu_state) != 0)
1674               continue;
1675 #endif
1676         }
1677     }
1678
1679 #if DPDK_VHOST_USER
1680   dpdk_vhost_user_process_cleanup(vu_state);
1681 #endif
1682
1683   return 0;
1684 }
1685
1686 VLIB_REGISTER_NODE (dpdk_process_node,static) = {
1687     .function = dpdk_process,
1688     .type = VLIB_NODE_TYPE_PROCESS,
1689     .name = "dpdk-process",
1690     .process_log2_n_stack_bytes = 17,
1691 };
1692
1693 int dpdk_set_stat_poll_interval (f64 interval)
1694 {
1695   if (interval < DPDK_MIN_STATS_POLL_INTERVAL)
1696       return (VNET_API_ERROR_INVALID_VALUE);
1697
1698   dpdk_main.stat_poll_interval = interval;
1699
1700   return 0;
1701 }
1702
1703 int dpdk_set_link_state_poll_interval (f64 interval)
1704 {
1705   if (interval < DPDK_MIN_LINK_POLL_INTERVAL)
1706       return (VNET_API_ERROR_INVALID_VALUE);
1707
1708   dpdk_main.link_state_poll_interval = interval;
1709
1710   return 0;
1711 }
1712
1713 clib_error_t *
1714 dpdk_init (vlib_main_t * vm)
1715 {
1716   dpdk_main_t * dm = &dpdk_main;
1717   vlib_node_t * ei;
1718   clib_error_t * error = 0;
1719   vlib_thread_main_t * tm = vlib_get_thread_main();
1720
1721   /* verify that structs are cacheline aligned */
1722   ASSERT(offsetof(dpdk_device_t, cacheline0) == 0);
1723   ASSERT(offsetof(dpdk_device_t, cacheline1) == CLIB_CACHE_LINE_BYTES);
1724   ASSERT(offsetof(dpdk_worker_t, cacheline0) == 0);
1725   ASSERT(offsetof(frame_queue_trace_t, cacheline0) == 0);
1726
1727   dm->vlib_main = vm;
1728   dm->vnet_main = vnet_get_main();
1729   dm->conf = &dpdk_config_main;
1730
1731   ei = vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
1732   if (ei == 0)
1733       return clib_error_return (0, "ethernet-input node AWOL");
1734
1735   dm->ethernet_input_node_index = ei->index;
1736
1737   dm->conf->nchannels = 4;
1738   dm->conf->num_mbufs = dm->conf->num_mbufs ? dm->conf->num_mbufs : NB_MBUF;
1739   vec_add1 (dm->conf->eal_init_args, (u8 *) "vnet");
1740
1741   dm->dpdk_device_by_kni_port_id = hash_create (0, sizeof (uword));
1742   dm->vu_sw_if_index_by_listener_fd = hash_create (0, sizeof (uword));
1743   dm->vu_sw_if_index_by_sock_fd = hash_create (0, sizeof (uword));
1744
1745   /* $$$ use n_thread_stacks since it's known-good at this point */
1746   vec_validate (dm->recycle, tm->n_thread_stacks - 1);
1747
1748   /* initialize EFD (early fast discard) default settings */
1749   dm->efd.enabled = DPDK_EFD_DISABLED;
1750   dm->efd.queue_hi_thresh = ((DPDK_EFD_DEFAULT_DEVICE_QUEUE_HI_THRESH_PCT *
1751                               DPDK_NB_RX_DESC_10GE)/100);
1752   dm->efd.consec_full_frames_hi_thresh =
1753       DPDK_EFD_DEFAULT_CONSEC_FULL_FRAMES_HI_THRESH;
1754
1755   /* vhost-user coalescence frames defaults */
1756   dm->conf->vhost_coalesce_frames = 32;
1757   dm->conf->vhost_coalesce_time = 1e-3;
1758
1759   /* Default vlib_buffer_t flags, DISABLES tcp/udp checksumming... */
1760   dm->buffer_flags_template =
1761     (VLIB_BUFFER_TOTAL_LENGTH_VALID
1762      | IP_BUFFER_L4_CHECKSUM_COMPUTED
1763      | IP_BUFFER_L4_CHECKSUM_CORRECT);
1764
1765   dm->stat_poll_interval = DPDK_STATS_POLL_INTERVAL;
1766   dm->link_state_poll_interval = DPDK_LINK_POLL_INTERVAL;
1767
1768   /* init CLI */
1769   if ((error = vlib_call_init_function (vm, dpdk_cli_init)))
1770     return error;
1771
1772   return error;
1773 }
1774
1775 VLIB_INIT_FUNCTION (dpdk_init);
1776