src/vnet/interface.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 /*
  16  * interface.c: VNET interfaces/sub-interfaces
  17  *
  18  * Copyright (c) 2008 Eliot Dresselhaus
  19  *
  20  * Permission is hereby granted, free of charge, to any person obtaining
  21  * a copy of this software and associated documentation files (the
  22  * "Software"), to deal in the Software without restriction, including
  23  * without limitation the rights to use, copy, modify, merge, publish,
  24  * distribute, sublicense, and/or sell copies of the Software, and to
  25  * permit persons to whom the Software is furnished to do so, subject to
  26  * the following conditions:
  27  *
  28  * The above copyright notice and this permission notice shall be
  29  * included in all copies or substantial portions of the Software.
  30  *
  31  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  32  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  33  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  34  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  35  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  36  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  37  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  38  */
  39
  40 #include <vnet/vnet.h>
  41 #include <vnet/plugin/plugin.h>
  42 #include <vnet/adj/adj.h>
  43 #include <vnet/adj/adj_mcast.h>
  44 #include <vnet/ip/ip.h>
  45 #include <vnet/interface/rx_queue_funcs.h>
  46 #include <vnet/interface/tx_queue_funcs.h>
  47
  48 /* *INDENT-OFF* */
  49 VLIB_REGISTER_LOG_CLASS (if_default_log, static) = {
  50   .class_name = "interface",
  51 };
  52 /* *INDENT-ON* */
  53
  54 #define log_debug(fmt,...) vlib_log_debug(if_default_log.class, fmt, __VA_ARGS__)
  55 #define log_err(fmt,...) vlib_log_err(if_default_log.class, fmt, __VA_ARGS__)
  56
  57 typedef enum vnet_interface_helper_flags_t_
  58 {
  59   VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE = (1 << 0),
  60   VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE = (1 << 1),
  61 } vnet_interface_helper_flags_t;
  62
  63 static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm,
  64                                                          u32 hw_if_index,
  65                                                          vnet_hw_interface_flags_t
  66                                                          flags,
  67                                                          vnet_interface_helper_flags_t
  68                                                          helper_flags);
  69
  70 static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm,
  71                                                          u32 sw_if_index,
  72                                                          vnet_sw_interface_flags_t
  73                                                          flags,
  74                                                          vnet_interface_helper_flags_t
  75                                                          helper_flags);
  76
  77 static clib_error_t *vnet_hw_interface_set_class_helper (vnet_main_t * vnm,
  78                                                          u32 hw_if_index,
  79                                                          u32 hw_class_index,
  80                                                          u32 redistribute);
  81
  82 typedef struct
  83 {
  84   /* Either sw or hw interface index. */
  85   u32 sw_hw_if_index;
  86
  87   /* Flags. */
  88   u32 flags;
  89 } vnet_sw_hw_interface_state_t;
  90
  91 static void
  92 serialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
  93 {
  94   vnet_sw_hw_interface_state_t *s =
  95     va_arg (*va, vnet_sw_hw_interface_state_t *);
  96   u32 n = va_arg (*va, u32);
  97   u32 i;
  98   for (i = 0; i < n; i++)
  99     {
 100       serialize_integer (m, s[i].sw_hw_if_index,
 101                          sizeof (s[i].sw_hw_if_index));
 102       serialize_integer (m, s[i].flags, sizeof (s[i].flags));
 103     }
 104 }
 105
 106 static void
 107 unserialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m,
 108                                             va_list * va)
 109 {
 110   vnet_sw_hw_interface_state_t *s =
 111     va_arg (*va, vnet_sw_hw_interface_state_t *);
 112   u32 n = va_arg (*va, u32);
 113   u32 i;
 114   for (i = 0; i < n; i++)
 115     {
 116       unserialize_integer (m, &s[i].sw_hw_if_index,
 117                            sizeof (s[i].sw_hw_if_index));
 118       unserialize_integer (m, &s[i].flags, sizeof (s[i].flags));
 119     }
 120 }
 121
 122 static vnet_sw_interface_flags_t
 123 vnet_hw_interface_flags_to_sw (vnet_hw_interface_flags_t hwf)
 124 {
 125   vnet_sw_interface_flags_t swf = VNET_SW_INTERFACE_FLAG_NONE;
 126
 127   if (hwf & VNET_HW_INTERFACE_FLAG_LINK_UP)
 128     swf |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
 129
 130   return (swf);
 131 }
 132
 133 void
 134 serialize_vnet_interface_state (serialize_main_t * m, va_list * va)
 135 {
 136   vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
 137   vnet_sw_hw_interface_state_t *sts = 0, *st;
 138   vnet_sw_interface_t *sif;
 139   vnet_hw_interface_t *hif;
 140   vnet_interface_main_t *im = &vnm->interface_main;
 141
 142   /* Serialize hardware interface classes since they may have changed.
 143      Must do this before sending up/down flags. */
 144   /* *INDENT-OFF* */
 145   pool_foreach (hif, im->hw_interfaces)  {
 146     vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hif->hw_class_index);
 147     serialize_cstring (m, hw_class->name);
 148   }
 149   /* *INDENT-ON* */
 150
 151   /* Send sw/hw interface state when non-zero. */
 152   /* *INDENT-OFF* */
 153   pool_foreach (sif, im->sw_interfaces)  {
 154     if (sif->flags != 0)
 155       {
 156         vec_add2 (sts, st, 1);
 157         st->sw_hw_if_index = sif->sw_if_index;
 158         st->flags = sif->flags;
 159       }
 160   }
 161   /* *INDENT-ON* */
 162
 163   vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
 164
 165   if (sts)
 166     vec_set_len (sts, 0);
 167
 168   /* *INDENT-OFF* */
 169   pool_foreach (hif, im->hw_interfaces)  {
 170     if (hif->flags != 0)
 171       {
 172         vec_add2 (sts, st, 1);
 173         st->sw_hw_if_index = hif->hw_if_index;
 174         st->flags = vnet_hw_interface_flags_to_sw(hif->flags);
 175       }
 176   }
 177   /* *INDENT-ON* */
 178
 179   vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
 180
 181   vec_free (sts);
 182 }
 183
 184 static vnet_hw_interface_flags_t
 185 vnet_sw_interface_flags_to_hw (vnet_sw_interface_flags_t swf)
 186 {
 187   vnet_hw_interface_flags_t hwf = VNET_HW_INTERFACE_FLAG_NONE;
 188
 189   if (swf & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
 190     hwf |= VNET_HW_INTERFACE_FLAG_LINK_UP;
 191
 192   return (hwf);
 193 }
 194
 195 void
 196 unserialize_vnet_interface_state (serialize_main_t * m, va_list * va)
 197 {
 198   vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
 199   vnet_sw_hw_interface_state_t *sts = 0, *st;
 200
 201   /* First set interface hardware class. */
 202   {
 203     vnet_interface_main_t *im = &vnm->interface_main;
 204     vnet_hw_interface_t *hif;
 205     char *class_name;
 206     uword *p;
 207     clib_error_t *error;
 208
 209     /* *INDENT-OFF* */
 210     pool_foreach (hif, im->hw_interfaces)  {
 211       unserialize_cstring (m, &class_name);
 212       p = hash_get_mem (im->hw_interface_class_by_name, class_name);
 213       if (p)
 214         {
 215           error = vnet_hw_interface_set_class_helper
 216             (vnm, hif->hw_if_index, p[0], /* redistribute */ 0);
 217         }
 218       else
 219         error = clib_error_return (0, "hw class %s AWOL?", class_name);
 220
 221       if (error)
 222         clib_error_report (error);
 223       vec_free (class_name);
 224     }
 225     /* *INDENT-ON* */
 226   }
 227
 228   vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
 229   vec_foreach (st, sts)
 230     vnet_sw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
 231                                         /* no distribute */ 0);
 232   vec_free (sts);
 233
 234   vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
 235   vec_foreach (st, sts)
 236   {
 237     vnet_hw_interface_set_flags_helper
 238       (vnm, st->sw_hw_if_index, vnet_sw_interface_flags_to_hw (st->flags),
 239        /* no distribute */ 0);
 240   }
 241   vec_free (sts);
 242 }
 243
 244 static clib_error_t *
 245 call_elf_section_interface_callbacks (vnet_main_t * vnm, u32 if_index,
 246                                       u32 flags,
 247                                       _vnet_interface_function_list_elt_t **
 248                                       elts)
 249 {
 250   _vnet_interface_function_list_elt_t *elt;
 251   vnet_interface_function_priority_t prio;
 252   clib_error_t *error = 0;
 253
 254   for (prio = VNET_ITF_FUNC_PRIORITY_LOW;
 255        prio <= VNET_ITF_FUNC_PRIORITY_HIGH; prio++)
 256     {
 257       elt = elts[prio];
 258
 259       while (elt)
 260         {
 261           error = elt->fp (vnm, if_index, flags);
 262           if (error)
 263             return error;
 264           elt = elt->next_interface_function;
 265         }
 266     }
 267   return error;
 268 }
 269
 270 static clib_error_t *
 271 call_hw_interface_add_del_callbacks (vnet_main_t * vnm, u32 hw_if_index,
 272                                      u32 is_create)
 273 {
 274   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
 275   vnet_hw_interface_class_t *hw_class =
 276     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
 277   vnet_device_class_t *dev_class =
 278     vnet_get_device_class (vnm, hi->dev_class_index);
 279   clib_error_t *error = 0;
 280
 281   if (hw_class->interface_add_del_function
 282       && (error =
 283           hw_class->interface_add_del_function (vnm, hw_if_index, is_create)))
 284     return error;
 285
 286   if (dev_class->interface_add_del_function
 287       && (error =
 288           dev_class->interface_add_del_function (vnm, hw_if_index,
 289                                                  is_create)))
 290     return error;
 291
 292   error = call_elf_section_interface_callbacks
 293     (vnm, hw_if_index, is_create, vnm->hw_interface_add_del_functions);
 294
 295   return error;
 296 }
 297
 298 static clib_error_t *
 299 call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index,
 300                                      u32 is_create)
 301 {
 302   return call_elf_section_interface_callbacks
 303     (vnm, sw_if_index, is_create, vnm->sw_interface_add_del_functions);
 304 }
 305
 306 static clib_error_t *
 307 vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index,
 308                                     vnet_hw_interface_flags_t flags,
 309                                     vnet_interface_helper_flags_t
 310                                     helper_flags)
 311 {
 312   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
 313   vnet_hw_interface_class_t *hw_class =
 314     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
 315   u32 mask;
 316   clib_error_t *error = 0;
 317   u32 is_create =
 318     (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
 319
 320   mask =
 321     (VNET_HW_INTERFACE_FLAG_LINK_UP | VNET_HW_INTERFACE_FLAG_DUPLEX_MASK);
 322   flags &= mask;
 323
 324   /* Call hardware interface add/del callbacks. */
 325   if (is_create)
 326     call_hw_interface_add_del_callbacks (vnm, hw_if_index, is_create);
 327
 328   /* Already in the desired state? */
 329   if (!is_create && (hi->flags & mask) == flags)
 330     goto done;
 331
 332   if ((hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) !=
 333       (flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
 334     {
 335       /* Do hardware class (e.g. ethernet). */
 336       if (hw_class->link_up_down_function
 337           && (error = hw_class->link_up_down_function (vnm, hw_if_index,
 338                                                        flags)))
 339         goto done;
 340
 341       error = call_elf_section_interface_callbacks
 342         (vnm, hw_if_index, flags, vnm->hw_interface_link_up_down_functions);
 343
 344       if (error)
 345         goto done;
 346     }
 347
 348   hi->flags &= ~mask;
 349   hi->flags |= flags;
 350
 351 done:
 352   if (error)
 353     log_err ("hw_set_flags_helper: %U", format_clib_error, error);
 354   return error;
 355 }
 356
 357 static clib_error_t *
 358 vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index,
 359                                     vnet_sw_interface_flags_t flags,
 360                                     vnet_interface_helper_flags_t
 361                                     helper_flags)
 362 {
 363   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 364   u32 mask;
 365   clib_error_t *error = 0;
 366   u32 is_create =
 367     (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
 368   u32 old_flags;
 369
 370   mask = VNET_SW_INTERFACE_FLAG_ADMIN_UP | VNET_SW_INTERFACE_FLAG_PUNT;
 371   flags &= mask;
 372
 373   if (is_create)
 374     {
 375       error =
 376         call_sw_interface_add_del_callbacks (vnm, sw_if_index, is_create);
 377       if (error)
 378         goto done;
 379
 380       if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
 381         {
 382           /* Notify everyone when the interface is created as admin up */
 383           error = call_elf_section_interface_callbacks (vnm, sw_if_index,
 384                                                         flags,
 385                                                         vnm->
 386                                                         sw_interface_admin_up_down_functions);
 387           if (error)
 388             goto done;
 389         }
 390     }
 391   else
 392     {
 393       vnet_sw_interface_t *si_sup = si;
 394
 395       /* Check that super interface is in correct state. */
 396       if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
 397         {
 398           si_sup = vnet_get_sw_interface (vnm, si->sup_sw_if_index);
 399
 400           /* Check to see if we're bringing down the soft interface and if it's parent is up */
 401           if ((flags != (si_sup->flags & mask)) &&
 402               (!((flags == 0)
 403                  && ((si_sup->flags & mask) ==
 404                      VNET_SW_INTERFACE_FLAG_ADMIN_UP))))
 405             {
 406               error = clib_error_return (0, "super-interface %U must be %U",
 407                                          format_vnet_sw_interface_name, vnm,
 408                                          si_sup,
 409                                          format_vnet_sw_interface_flags,
 410                                          flags);
 411               goto done;
 412             }
 413         }
 414
 415       /* Already in the desired state? */
 416       if ((si->flags & mask) == flags)
 417         goto done;
 418
 419       /* Sub-interfaces of hardware interfaces that do no redistribute,
 420          do not redistribute themselves. */
 421       if (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
 422         {
 423           vnet_hw_interface_t *hi =
 424             vnet_get_hw_interface (vnm, si_sup->hw_if_index);
 425           vnet_device_class_t *dev_class =
 426             vnet_get_device_class (vnm, hi->dev_class_index);
 427           if (!dev_class->redistribute)
 428             helper_flags &=
 429               ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
 430         }
 431
 432       /* set the flags now before invoking the registered clients
 433        * so that the state they query is consistent with the state here notified */
 434       old_flags = si->flags;
 435       si->flags &= ~mask;
 436       si->flags |= flags;
 437       if ((flags | old_flags) & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
 438         error = call_elf_section_interface_callbacks
 439           (vnm, sw_if_index, flags,
 440            vnm->sw_interface_admin_up_down_functions);
 441
 442       if (error)
 443         {
 444           /* restore flags on error */
 445           si->flags = old_flags;
 446           goto done;
 447         }
 448
 449       if (si->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
 450         {
 451           vnet_hw_interface_t *hi =
 452             vnet_get_hw_interface (vnm, si->hw_if_index);
 453           vnet_hw_interface_class_t *hw_class =
 454             vnet_get_hw_interface_class (vnm, hi->hw_class_index);
 455           vnet_device_class_t *dev_class =
 456             vnet_get_device_class (vnm, hi->dev_class_index);
 457
 458           if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) &&
 459               (si->flags & VNET_SW_INTERFACE_FLAG_ERROR))
 460             {
 461               error = clib_error_return (0, "Interface in the error state");
 462               goto done;
 463             }
 464
 465           /* update si admin up flag in advance if we are going admin down */
 466           if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
 467             si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
 468
 469           if (dev_class->admin_up_down_function
 470               && (error = dev_class->admin_up_down_function (vnm,
 471                                                              si->hw_if_index,
 472                                                              flags)))
 473             {
 474               /* restore si admin up flag to it's original state on errors */
 475               si->flags = old_flags;
 476               goto done;
 477             }
 478
 479           if (hw_class->admin_up_down_function
 480               && (error = hw_class->admin_up_down_function (vnm,
 481                                                             si->hw_if_index,
 482                                                             flags)))
 483             {
 484               /* restore si admin up flag to it's original state on errors */
 485               si->flags = old_flags;
 486               goto done;
 487             }
 488
 489           /* Admin down implies link down. */
 490           if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
 491               && (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
 492             vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
 493                                                 hi->flags &
 494                                                 ~VNET_HW_INTERFACE_FLAG_LINK_UP,
 495                                                 helper_flags);
 496           vnet_hw_if_update_runtime_data (vnm, si->hw_if_index);
 497         }
 498     }
 499
 500   si->flags &= ~mask;
 501   si->flags |= flags;
 502
 503 done:
 504   if (error)
 505     log_err ("sw_set_flags_helper: %U", format_clib_error, error);
 506   return error;
 507 }
 508
 509 clib_error_t *
 510 vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index,
 511                              vnet_hw_interface_flags_t flags)
 512 {
 513   log_debug ("hw_set_flags: hw_if_index %u flags 0x%x", hw_if_index, flags);
 514   return vnet_hw_interface_set_flags_helper
 515     (vnm, hw_if_index, flags,
 516      VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
 517 }
 518
 519 clib_error_t *
 520 vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index,
 521                              vnet_sw_interface_flags_t flags)
 522 {
 523   log_debug ("sw_set_flags: sw_if_index %u flags 0x%x", sw_if_index, flags);
 524   return vnet_sw_interface_set_flags_helper
 525     (vnm, sw_if_index, flags,
 526      VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
 527 }
 528
 529 void
 530 vnet_sw_interface_admin_up (vnet_main_t * vnm, u32 sw_if_index)
 531 {
 532   u32 flags = vnet_sw_interface_get_flags (vnm, sw_if_index);
 533   log_debug ("sw_admin_up: sw_if_index %u", sw_if_index);
 534
 535   if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
 536     {
 537       flags |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
 538       vnet_sw_interface_set_flags (vnm, sw_if_index, flags);
 539     }
 540 }
 541
 542 void
 543 vnet_sw_interface_admin_down (vnet_main_t * vnm, u32 sw_if_index)
 544 {
 545   u32 flags = vnet_sw_interface_get_flags (vnm, sw_if_index);
 546   log_debug ("sw_admin_down: sw_if_index %u", sw_if_index);
 547
 548   if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
 549     {
 550       flags &= ~(VNET_SW_INTERFACE_FLAG_ADMIN_UP);
 551       vnet_sw_interface_set_flags (vnm, sw_if_index, flags);
 552     }
 553 }
 554
 555 static void
 556 vnet_if_update_lookup_tables (vnet_main_t *vnm, u32 sw_if_index)
 557 {
 558   vnet_interface_main_t *im = &vnm->interface_main;
 559   vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
 560
 561   vec_validate_init_empty (im->hw_if_index_by_sw_if_index, sw_if_index, ~0);
 562   vec_validate_init_empty (im->if_out_arc_end_next_index_by_sw_if_index,
 563                            sw_if_index, ~0);
 564
 565   im->hw_if_index_by_sw_if_index[sw_if_index] = hi->hw_if_index;
 566   im->if_out_arc_end_next_index_by_sw_if_index[sw_if_index] =
 567     hi->if_out_arc_end_node_next_index;
 568 }
 569
 570 static u32
 571 vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm,
 572                                        vnet_sw_interface_t * template)
 573 {
 574   vnet_interface_main_t *im = &vnm->interface_main;
 575   vnet_sw_interface_t *sw;
 576   u32 sw_if_index;
 577
 578   pool_get (im->sw_interfaces, sw);
 579   sw_if_index = sw - im->sw_interfaces;
 580
 581   sw[0] = template[0];
 582
 583   sw->flags = 0;
 584   sw->sw_if_index = sw_if_index;
 585   if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
 586     sw->sup_sw_if_index = sw->sw_if_index;
 587
 588   /* Allocate counters for this interface. */
 589   {
 590     u32 i;
 591
 592     vnet_interface_counter_lock (im);
 593
 594     for (i = 0; i < vec_len (im->sw_if_counters); i++)
 595       {
 596         vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
 597         vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
 598       }
 599
 600     for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
 601       {
 602         vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
 603                                         sw_if_index);
 604         vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
 605                                     sw_if_index);
 606       }
 607
 608     vnet_interface_counter_unlock (im);
 609   }
 610
 611   vnet_if_update_lookup_tables (vnm, sw_if_index);
 612   return sw_if_index;
 613 }
 614
 615 clib_error_t *
 616 vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template,
 617                           u32 * sw_if_index)
 618 {
 619   vnet_interface_main_t *im = &vnm->interface_main;
 620   clib_error_t *error;
 621   vnet_hw_interface_t *hi;
 622   vnet_device_class_t *dev_class;
 623
 624   if (template->sub.eth.flags.two_tags == 1
 625       && template->sub.eth.flags.exact_match == 1
 626       && (template->sub.eth.flags.inner_vlan_id_any == 1
 627           || template->sub.eth.flags.outer_vlan_id_any == 1))
 628     {
 629       char *str = "inner-dot1q any exact-match is unsupported";
 630       error = clib_error_return (0, str);
 631       log_err ("create_sw_interface: %s", str);
 632       return error;
 633     }
 634
 635   hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
 636   dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
 637
 638   if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
 639       dev_class->subif_add_del_function)
 640     {
 641       error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
 642                                                  (struct vnet_sw_interface_t
 643                                                   *) template, 1);
 644       if (error)
 645         return error;
 646     }
 647
 648   *sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
 649   error = vnet_sw_interface_set_flags_helper
 650     (vnm, *sw_if_index, template->flags,
 651      VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
 652
 653   if (error)
 654     {
 655       /* undo the work done by vnet_create_sw_interface_no_callbacks() */
 656       log_err ("create_sw_interface: set flags failed\n  %U",
 657                format_clib_error, error);
 658       call_sw_interface_add_del_callbacks (vnm, *sw_if_index, 0);
 659       vnet_sw_interface_t *sw =
 660         pool_elt_at_index (im->sw_interfaces, *sw_if_index);
 661       pool_put (im->sw_interfaces, sw);
 662     }
 663   else
 664     {
 665       vnet_sw_interface_t *sw =
 666         pool_elt_at_index (im->sw_interfaces, *sw_if_index);
 667       log_debug ("create_sw_interface: interface %U (sw_if_index %u) created",
 668                  format_vnet_sw_interface_name, vnm, sw, *sw_if_index);
 669     }
 670
 671   return error;
 672 }
 673
 674 void
 675 vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
 676 {
 677   vnet_interface_main_t *im = &vnm->interface_main;
 678   vnet_sw_interface_t *sw =
 679     pool_elt_at_index (im->sw_interfaces, sw_if_index);
 680
 681   log_debug ("delete_sw_interface: sw_if_index %u, name '%U'",
 682              sw_if_index, format_vnet_sw_if_index_name, vnm, sw_if_index);
 683
 684   /* Check if the interface has config and is removed from L2 BD or XConnect */
 685   vnet_clear_sw_interface_tag (vnm, sw_if_index);
 686
 687   /* Bring down interface in case it is up. */
 688   if (sw->flags != 0)
 689     vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
 690
 691   call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
 692
 693   pool_put (im->sw_interfaces, sw);
 694 }
 695
 696 static clib_error_t *
 697 call_sw_interface_mtu_change_callbacks (vnet_main_t * vnm, u32 sw_if_index)
 698 {
 699   return call_elf_section_interface_callbacks
 700     (vnm, sw_if_index, 0, vnm->sw_interface_mtu_change_functions);
 701 }
 702
 703 void
 704 vnet_sw_interface_set_mtu (vnet_main_t * vnm, u32 sw_if_index, u32 mtu)
 705 {
 706   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 707
 708   if (si->mtu[VNET_MTU_L3] != mtu)
 709     {
 710       si->mtu[VNET_MTU_L3] = mtu;
 711       log_debug ("set_mtu: interface %U, new mtu %u",
 712                  format_vnet_sw_if_index_name, vnm, sw_if_index, mtu);
 713
 714       call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
 715     }
 716 }
 717
 718 void
 719 vnet_sw_interface_set_protocol_mtu (vnet_main_t * vnm, u32 sw_if_index,
 720                                     u32 mtu[])
 721 {
 722   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 723   bool changed = false;
 724   int i;
 725
 726   for (i = 0; i < VNET_N_MTU; i++)
 727     {
 728       if (si->mtu[i] != mtu[i])
 729         {
 730           si->mtu[i] = mtu[i];
 731           changed = true;
 732         }
 733     }
 734   /* Notify interested parties */
 735   if (changed)
 736     {
 737       log_debug ("set_protocol_mtu: interface %U l3 %u ip4 %u ip6 %u mpls %u",
 738                  format_vnet_sw_if_index_name, vnm, sw_if_index,
 739                  mtu[VNET_MTU_L3], mtu[VNET_MTU_IP4], mtu[VNET_MTU_IP6],
 740                  mtu[VNET_MTU_MPLS]);
 741       call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
 742     }
 743 }
 744
 745 void
 746 vnet_sw_interface_ip_directed_broadcast (vnet_main_t * vnm,
 747                                          u32 sw_if_index, u8 enable)
 748 {
 749   vnet_sw_interface_t *si;
 750
 751   si = vnet_get_sw_interface (vnm, sw_if_index);
 752
 753   if (enable)
 754     si->flags |= VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
 755   else
 756     si->flags &= ~VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
 757
 758   ip4_directed_broadcast (sw_if_index, enable);
 759 }
 760
 761 /*
 762  * Reflect a change in hardware MTU on protocol MTUs
 763  */
 764 static walk_rc_t
 765 sw_interface_walk_callback (vnet_main_t * vnm, u32 sw_if_index, void *ctx)
 766 {
 767   u32 *link_mtu = ctx;
 768   vnet_sw_interface_set_mtu (vnm, sw_if_index, *link_mtu);
 769   return WALK_CONTINUE;
 770 }
 771
 772 clib_error_t *
 773 vnet_hw_interface_set_max_frame_size (vnet_main_t *vnm, u32 hw_if_index,
 774                                       u32 fs)
 775 {
 776   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
 777   vnet_hw_interface_class_t *hw_if_class =
 778     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
 779   clib_error_t *err = 0;
 780   log_debug ("set_max_frame_size: interface %v, max_frame_size %u -> %u",
 781              hi->name, hi->max_frame_size, fs);
 782
 783   if (hw_if_class->set_max_frame_size == 0)
 784     return vnet_error (VNET_ERR_UNSUPPORTED,
 785                        "hw class doesn't support changing Max Frame Size");
 786
 787   if (hi->max_frame_size != fs)
 788     {
 789       u32 mtu;
 790       if (hw_if_class->set_max_frame_size)
 791         if ((err = hw_if_class->set_max_frame_size (vnm, hi, fs)))
 792           return err;
 793       hi->max_frame_size = fs;
 794       mtu = fs - hi->frame_overhead;
 795       vnet_hw_interface_walk_sw (vnm, hw_if_index, sw_interface_walk_callback,
 796                                  &mtu);
 797     }
 798   return 0;
 799 }
 800 clib_error_t *
 801 vnet_hw_interface_set_mtu (vnet_main_t *vnm, u32 hw_if_index, u32 mtu)
 802 {
 803   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
 804   return vnet_hw_interface_set_max_frame_size (vnm, hw_if_index,
 805                                                mtu + hi->frame_overhead);
 806 }
 807
 808 static void
 809 setup_tx_node (vlib_main_t * vm,
 810                u32 node_index, vnet_device_class_t * dev_class)
 811 {
 812   vlib_node_t *n = vlib_get_node (vm, node_index);
 813
 814   n->format_trace = dev_class->format_tx_trace;
 815
 816   vlib_register_errors (vm, node_index, dev_class->tx_function_n_errors,
 817                         dev_class->tx_function_error_strings,
 818                         dev_class->tx_function_error_counters);
 819 }
 820
 821 static void
 822 setup_output_node (vlib_main_t * vm,
 823                    u32 node_index, vnet_hw_interface_class_t * hw_class)
 824 {
 825   vlib_node_t *n = vlib_get_node (vm, node_index);
 826   n->format_buffer = hw_class->format_header;
 827   n->unformat_buffer = hw_class->unformat_header;
 828 }
 829
 830 void
 831 vnet_reset_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index)
 832 {
 833   vnet_set_interface_l3_output_node (vm, sw_if_index,
 834                                      (u8 *) "interface-output");
 835 }
 836
 837 void
 838 vnet_set_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index,
 839                                    u8 *output_node)
 840 {
 841   vlib_node_t *l3_node;
 842
 843   l3_node = vlib_get_node_by_name (vm, output_node);
 844
 845   static char *arcs[] = {
 846     "ip4-output",
 847     "ip6-output",
 848     "mpls-output",
 849     "ethernet-output",
 850   };
 851   u8 a;
 852
 853   for (a = 0; a < ARRAY_LEN (arcs); a++)
 854     {
 855       u8 arc = vnet_get_feature_arc_index (arcs[a]);
 856       vnet_feature_modify_end_node (arc, sw_if_index, l3_node->index);
 857     }
 858 }
 859
 860 /* Register an interface instance. */
 861 u32
 862 vnet_register_interface (vnet_main_t * vnm,
 863                          u32 dev_class_index,
 864                          u32 dev_instance,
 865                          u32 hw_class_index, u32 hw_instance)
 866 {
 867   vnet_interface_main_t *im = &vnm->interface_main;
 868   vnet_hw_interface_t *hw;
 869   vnet_device_class_t *dev_class =
 870     vnet_get_device_class (vnm, dev_class_index);
 871   vnet_hw_interface_class_t *hw_class =
 872     vnet_get_hw_interface_class (vnm, hw_class_index);
 873   vlib_main_t *vm = vnm->vlib_main;
 874   vnet_feature_config_main_t *fcm;
 875   vnet_config_main_t *cm;
 876   u32 hw_index, i;
 877   vlib_node_t *if_out_node =
 878     vlib_get_node (vm, vnet_interface_output_node.index);
 879
 880   pool_get (im->hw_interfaces, hw);
 881   clib_memset (hw, 0, sizeof (*hw));
 882   hw->trace_classify_table_index = ~0;
 883
 884   hw_index = hw - im->hw_interfaces;
 885   hw->hw_if_index = hw_index;
 886   hw->default_rx_mode = VNET_HW_IF_RX_MODE_POLLING;
 887
 888   if (hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_ETHERNET ||
 889       hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_IP)
 890     hw->hf = vnet_hash_default_function (hw_class->tx_hash_fn_type);
 891
 892   if (dev_class->format_device_name)
 893     hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
 894   else if (hw_class->format_interface_name)
 895     hw->name = format (0, "%U", hw_class->format_interface_name,
 896                        dev_instance);
 897   else
 898     hw->name = format (0, "%s%x", hw_class->name, dev_instance);
 899
 900   if (!im->hw_interface_by_name)
 901     im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
 902                                                 sizeof (hw->name[0]),
 903                                                 sizeof (uword));
 904
 905   hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
 906
 907   /* Make hardware interface point to software interface. */
 908   {
 909     vnet_sw_interface_t sw = {
 910       .type = VNET_SW_INTERFACE_TYPE_HARDWARE,
 911       .flood_class = VNET_FLOOD_CLASS_NORMAL,
 912       .hw_if_index = hw_index
 913     };
 914     hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
 915   }
 916
 917   hw->dev_class_index = dev_class_index;
 918   hw->dev_instance = dev_instance;
 919   hw->hw_class_index = hw_class_index;
 920   hw->hw_instance = hw_instance;
 921
 922   hw->max_rate_bits_per_sec = 0;
 923   vnet_sw_interface_set_mtu (vnm, hw->sw_if_index, 0);
 924
 925   if (dev_class->tx_function == 0 && dev_class->tx_fn_registrations == 0)
 926     goto no_output_nodes;       /* No output/tx nodes to create */
 927
 928   /* If we have previously deleted interface nodes, re-use them. */
 929   if (vec_len (im->deleted_hw_interface_nodes) > 0)
 930     {
 931       vnet_hw_interface_nodes_t *hn;
 932       vlib_node_t *node;
 933       vlib_node_runtime_t *nrt;
 934
 935       hn = vec_end (im->deleted_hw_interface_nodes) - 1;
 936
 937       hw->tx_node_index = hn->tx_node_index;
 938       hw->output_node_index = hn->output_node_index;
 939
 940       vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
 941       vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
 942
 943       foreach_vlib_main ()
 944         {
 945           vnet_interface_output_runtime_t *rt;
 946
 947           rt =
 948             vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
 949           ASSERT (rt->is_deleted == 1);
 950           rt->is_deleted = 0;
 951           rt->hw_if_index = hw_index;
 952           rt->sw_if_index = hw->sw_if_index;
 953           rt->dev_instance = hw->dev_instance;
 954
 955           rt = vlib_node_get_runtime_data (this_vlib_main, hw->tx_node_index);
 956           rt->hw_if_index = hw_index;
 957           rt->sw_if_index = hw->sw_if_index;
 958           rt->dev_instance = hw->dev_instance;
 959         }
 960
 961       /* The new class may differ from the old one.
 962        * Functions have to be updated. */
 963       node = vlib_get_node (vm, hw->output_node_index);
 964       node->format_trace = format_vnet_interface_output_trace;
 965       node->node_fn_registrations = if_out_node->node_fn_registrations;
 966       node->function = if_out_node->function;
 967
 968       foreach_vlib_main ()
 969         {
 970           nrt = vlib_node_get_runtime (this_vlib_main, hw->output_node_index);
 971           nrt->function = node->function;
 972           vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
 973                                           VLIB_NODE_RUNTIME_PERF_RESET);
 974         }
 975
 976       node = vlib_get_node (vm, hw->tx_node_index);
 977       if (dev_class->tx_fn_registrations)
 978         {
 979           node->node_fn_registrations = dev_class->tx_fn_registrations;
 980           node->function = vlib_node_get_preferred_node_fn_variant (
 981             vm, dev_class->tx_fn_registrations);
 982         }
 983       else
 984         node->function = dev_class->tx_function;
 985       node->format_trace = dev_class->format_tx_trace;
 986
 987       foreach_vlib_main ()
 988         {
 989           nrt = vlib_node_get_runtime (this_vlib_main, hw->tx_node_index);
 990           nrt->function = node->function;
 991           vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
 992                                           VLIB_NODE_RUNTIME_PERF_RESET);
 993         }
 994
 995       vec_dec_len (im->deleted_hw_interface_nodes, 1);
 996     }
 997   else
 998     {
 999       vlib_node_registration_t r;
1000       vnet_interface_output_runtime_t rt = {
1001         .hw_if_index = hw_index,
1002         .sw_if_index = hw->sw_if_index,
1003         .dev_instance = hw->dev_instance,
1004         .is_deleted = 0,
1005       };
1006
1007       clib_memset (&r, 0, sizeof (r));
1008       r.type = VLIB_NODE_TYPE_INTERNAL;
1009       r.runtime_data = &rt;
1010       r.runtime_data_bytes = sizeof (rt);
1011       r.scalar_size = sizeof (vnet_hw_if_tx_frame_t);
1012       r.vector_size = sizeof (u32);
1013
1014       r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
1015       if (dev_class->tx_fn_registrations)
1016         {
1017           r.function = 0;
1018           r.node_fn_registrations = dev_class->tx_fn_registrations;
1019         }
1020       else
1021         r.function = dev_class->tx_function;
1022
1023       hw->tx_node_index = vlib_register_node (vm, &r, "%v-tx", hw->name);
1024
1025       vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
1026                                           "error-drop",
1027                                           VNET_INTERFACE_TX_NEXT_DROP);
1028
1029       r.flags = 0;
1030       r.format_trace = format_vnet_interface_output_trace;
1031       if (if_out_node->node_fn_registrations)
1032         {
1033           r.function = 0;
1034           r.node_fn_registrations = if_out_node->node_fn_registrations;
1035         }
1036       else
1037         r.function = if_out_node->function;
1038
1039       {
1040         static char *e[] = {
1041           "interface is down",
1042           "interface is deleted",
1043           "no tx queue available",
1044         };
1045
1046         r.n_errors = ARRAY_LEN (e);
1047         r.error_strings = e;
1048       }
1049       hw->output_node_index =
1050         vlib_register_node (vm, &r, "%v-output", hw->name);
1051
1052       vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
1053                                           "error-drop",
1054                                           VNET_INTERFACE_OUTPUT_NEXT_DROP);
1055       vlib_node_add_next_with_slot (vm, hw->output_node_index,
1056                                     hw->tx_node_index,
1057                                     VNET_INTERFACE_OUTPUT_NEXT_TX);
1058       /* add interface to the list of "output-interface" feature arc start nodes
1059          and clone nexts from 1st interface if it exists */
1060       fcm = vnet_feature_get_config_main (im->output_feature_arc_index);
1061       cm = &fcm->config_main;
1062       i = vec_len (cm->start_node_indices);
1063       vec_validate (cm->start_node_indices, i);
1064       cm->start_node_indices[i] = hw->output_node_index;
1065       if (hw_index)
1066         {
1067           /* copy nexts from 1st interface */
1068           vnet_hw_interface_t *first_hw;
1069           vlib_node_t *first_node;
1070
1071           first_hw = vnet_get_hw_interface (vnm, /* hw_if_index */ 0);
1072           first_node = vlib_get_node (vm, first_hw->output_node_index);
1073
1074           /* 1st 2 nexts are already added above */
1075           for (i = 2; i < vec_len (first_node->next_nodes); i++)
1076             vlib_node_add_next_with_slot (vm, hw->output_node_index,
1077                                           first_node->next_nodes[i], i);
1078         }
1079     }
1080
1081   hw->if_out_arc_end_node_next_index = vlib_node_add_next (
1082     vm, vnet_interface_output_arc_end_node.index, hw->tx_node_index);
1083   vnet_if_update_lookup_tables (vnm, hw->sw_if_index);
1084   setup_output_node (vm, hw->output_node_index, hw_class);
1085   setup_tx_node (vm, hw->tx_node_index, dev_class);
1086
1087 no_output_nodes:
1088   /* Call all up/down callbacks with zero flags when interface is created. */
1089   vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
1090                                       VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
1091   vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
1092                                       VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
1093   return hw_index;
1094 }
1095
1096 void
1097 vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
1098 {
1099   vnet_interface_main_t *im = &vnm->interface_main;
1100   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
1101   vlib_main_t *vm = vnm->vlib_main;
1102   vnet_device_class_t *dev_class = vnet_get_device_class (vnm,
1103                                                           hw->dev_class_index);
1104   /* If it is up, mark it down. */
1105   if (hw->flags != 0)
1106     vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
1107
1108   /* Call delete callbacks. */
1109   call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
1110
1111   /* delete rx & tx queues */
1112   vnet_hw_if_unregister_all_rx_queues (vnm, hw_if_index);
1113   vnet_hw_if_unregister_all_tx_queues (vnm, hw_if_index);
1114   vnet_hw_if_update_runtime_data (vnm, hw_if_index);
1115
1116   /* Delete any sub-interfaces. */
1117   {
1118     u32 id, sw_if_index;
1119     /* *INDENT-OFF* */
1120     hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id,
1121     ({
1122       vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
1123       u64 sup_and_sub_key =
1124         ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
1125       hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
1126       vnet_delete_sw_interface (vnm, sw_if_index);
1127     }));
1128     hash_free (hw->sub_interface_sw_if_index_by_id);
1129     /* *INDENT-ON* */
1130   }
1131
1132   /* Delete software interface corresponding to hardware interface. */
1133   vnet_delete_sw_interface (vnm, hw->sw_if_index);
1134
1135   if (dev_class->tx_function)
1136     {
1137       /* Put output/tx nodes into recycle pool */
1138       vnet_hw_interface_nodes_t *dn;
1139
1140       foreach_vlib_main ()
1141         {
1142           vnet_interface_output_runtime_t *rt =
1143             vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
1144
1145           /* Mark node runtime as deleted so output node (if called)
1146            * will drop packets. */
1147           rt->is_deleted = 1;
1148         }
1149
1150       vlib_node_rename (vm, hw->output_node_index,
1151                         "interface-%d-output-deleted", hw_if_index);
1152       vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
1153                         hw_if_index);
1154       vlib_unregister_errors (vm, hw->output_node_index);
1155       vlib_unregister_errors (vm, hw->tx_node_index);
1156       vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
1157       dn->tx_node_index = hw->tx_node_index;
1158       dn->output_node_index = hw->output_node_index;
1159     }
1160   hash_unset_mem (im->hw_interface_by_name, hw->name);
1161   vec_free (hw->name);
1162   vec_free (hw->hw_address);
1163   vec_free (hw->output_node_thread_runtimes);
1164   pool_put (im->hw_interfaces, hw);
1165 }
1166
1167 void
1168 vnet_hw_interface_walk_sw (vnet_main_t * vnm,
1169                            u32 hw_if_index,
1170                            vnet_hw_sw_interface_walk_t fn, void *ctx)
1171 {
1172   vnet_hw_interface_t *hi;
1173   u32 id, sw_if_index;
1174
1175   hi = vnet_get_hw_interface (vnm, hw_if_index);
1176   /* the super first, then the sub interfaces */
1177   if (WALK_STOP == fn (vnm, hi->sw_if_index, ctx))
1178     return;
1179
1180   /* *INDENT-OFF* */
1181   hash_foreach (id, sw_if_index,
1182                 hi->sub_interface_sw_if_index_by_id,
1183   ({
1184     if (WALK_STOP == fn (vnm, sw_if_index, ctx))
1185       break;
1186   }));
1187   /* *INDENT-ON* */
1188 }
1189
1190 void
1191 vnet_hw_interface_walk (vnet_main_t * vnm,
1192                         vnet_hw_interface_walk_t fn, void *ctx)
1193 {
1194   vnet_interface_main_t *im;
1195   vnet_hw_interface_t *hi;
1196
1197   im = &vnm->interface_main;
1198
1199   /* *INDENT-OFF* */
1200   pool_foreach (hi, im->hw_interfaces)
1201    {
1202     if (WALK_STOP == fn(vnm, hi->hw_if_index, ctx))
1203       break;
1204   }
1205   /* *INDENT-ON* */
1206 }
1207
1208 void
1209 vnet_sw_interface_walk (vnet_main_t * vnm,
1210                         vnet_sw_interface_walk_t fn, void *ctx)
1211 {
1212   vnet_interface_main_t *im;
1213   vnet_sw_interface_t *si;
1214
1215   im = &vnm->interface_main;
1216
1217   /* *INDENT-OFF* */
1218   pool_foreach (si, im->sw_interfaces)
1219   {
1220     if (WALK_STOP == fn (vnm, si, ctx))
1221       break;
1222   }
1223   /* *INDENT-ON* */
1224 }
1225
1226 void
1227 vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
1228                                   u32 hw_class_index, u32 hw_instance)
1229 {
1230   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1231   vnet_hw_interface_class_t *hc =
1232     vnet_get_hw_interface_class (vnm, hw_class_index);
1233
1234   hi->hw_class_index = hw_class_index;
1235   hi->hw_instance = hw_instance;
1236   setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
1237 }
1238
1239 static clib_error_t *
1240 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
1241                                     u32 hw_class_index, u32 redistribute)
1242 {
1243   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1244   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
1245   vnet_hw_interface_class_t *old_class =
1246     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1247   vnet_hw_interface_class_t *new_class =
1248     vnet_get_hw_interface_class (vnm, hw_class_index);
1249   vnet_device_class_t *dev_class =
1250     vnet_get_device_class (vnm, hi->dev_class_index);
1251   clib_error_t *error = 0;
1252
1253   /* New class equals old class?  Nothing to do. */
1254   if (hi->hw_class_index == hw_class_index)
1255     return 0;
1256
1257   /* No need (and incorrect since admin up flag may be set) to do error checking when
1258      receiving unserialize message. */
1259   if (redistribute)
1260     {
1261       if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
1262         return clib_error_return (0,
1263                                   "%v must be admin down to change class from %s to %s",
1264                                   hi->name, old_class->name, new_class->name);
1265
1266       /* Make sure interface supports given class. */
1267       if ((new_class->is_valid_class_for_interface
1268            && !new_class->is_valid_class_for_interface (vnm, hw_if_index,
1269                                                         hw_class_index))
1270           || (dev_class->is_valid_class_for_interface
1271               && !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
1272                                                            hw_class_index)))
1273         return clib_error_return (0,
1274                                   "%v class cannot be changed from %s to %s",
1275                                   hi->name, old_class->name, new_class->name);
1276
1277     }
1278
1279   if (old_class->hw_class_change)
1280     old_class->hw_class_change (vnm, hw_if_index, old_class->index,
1281                                 new_class->index);
1282
1283   vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
1284                                     /* instance */ ~0);
1285
1286   if (new_class->hw_class_change)
1287     new_class->hw_class_change (vnm, hw_if_index, old_class->index,
1288                                 new_class->index);
1289
1290   if (dev_class->hw_class_change)
1291     dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
1292
1293   return error;
1294 }
1295
1296 clib_error_t *
1297 vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
1298                              u32 hw_class_index)
1299 {
1300   return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
1301                                              /* redistribute */ 1);
1302 }
1303
1304 static int
1305 vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
1306                                               u32 hw_if_index,
1307                                               u32 node_index,
1308                                               u32 redistribute)
1309 {
1310   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1311   vnet_device_class_t *dev_class = vnet_get_device_class
1312     (vnm, hi->dev_class_index);
1313
1314   if (dev_class->rx_redirect_to_node)
1315     {
1316       dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
1317       return 0;
1318     }
1319
1320   return VNET_API_ERROR_UNIMPLEMENTED;
1321 }
1322
1323 int
1324 vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
1325                                        u32 node_index)
1326 {
1327   return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
1328                                                        node_index,
1329                                                        1 /* redistribute */ );
1330 }
1331
1332 word
1333 vnet_sw_interface_compare (vnet_main_t * vnm,
1334                            uword sw_if_index0, uword sw_if_index1)
1335 {
1336   vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1337   vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
1338   vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
1339   vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
1340
1341   if (h0 != h1)
1342     return vec_cmp (h0->name, h1->name);
1343   return (word) h0->hw_instance - (word) h1->hw_instance;
1344 }
1345
1346 word
1347 vnet_hw_interface_compare (vnet_main_t * vnm,
1348                            uword hw_if_index0, uword hw_if_index1)
1349 {
1350   vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
1351   vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);
1352
1353   if (h0 != h1)
1354     return vec_cmp (h0->name, h1->name);
1355   return (word) h0->hw_instance - (word) h1->hw_instance;
1356 }
1357
1358 int
1359 vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
1360 {
1361   vnet_sw_interface_t *si = vnet_get_sw_interface_or_null (vnm, sw_if_index);
1362   if (si == NULL)
1363     return -1;
1364
1365   if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
1366       (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
1367     return 1;
1368
1369   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1370   vnet_hw_interface_class_t *hc =
1371     vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1372
1373   return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
1374 }
1375
1376 int
1377 vnet_sw_interface_is_nbma (vnet_main_t * vnm, u32 sw_if_index)
1378 {
1379   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1380   vnet_hw_interface_class_t *hc =
1381     vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1382
1383   return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_NBMA);
1384 }
1385
1386 clib_error_t *
1387 vnet_sw_interface_supports_addressing (vnet_main_t *vnm, u32 sw_if_index)
1388 {
1389   if (sw_if_index == 0)
1390     {
1391       return clib_error_create (
1392         "local0 interface doesn't support IP addressing");
1393     }
1394
1395   if (vnet_sw_interface_is_sub (vnm, sw_if_index))
1396     {
1397       vnet_sw_interface_t *si;
1398       si = vnet_get_sw_interface_or_null (vnm, sw_if_index);
1399       if (si && si->type == VNET_SW_INTERFACE_TYPE_SUB &&
1400           si->sub.eth.flags.exact_match == 0)
1401         {
1402           return clib_error_create (
1403             "sub-interface without exact-match doesn't support IP addressing");
1404         }
1405     }
1406   return NULL;
1407 }
1408
1409 u32
1410 vnet_register_device_class (vlib_main_t *vm, vnet_device_class_t *c)
1411 {
1412   vnet_main_t *vnm = vnet_get_main ();
1413   vnet_interface_main_t *im = &vnm->interface_main;
1414   c->index = vec_len (im->device_classes);
1415   hash_set_mem (im->device_class_by_name, c->name, c->index);
1416
1417   /* to avoid confusion, please remove ".tx_function" statement
1418     from VNET_DEVICE_CLASS() if using function candidates */
1419   ASSERT (c->tx_fn_registrations == 0 || c->tx_function == 0);
1420
1421   if (c->tx_fn_registrations)
1422     c->tx_function =
1423       vlib_node_get_preferred_node_fn_variant (vm, c->tx_fn_registrations);
1424
1425   vec_add1 (im->device_classes, c[0]);
1426   return c->index;
1427 }
1428
1429 clib_error_t *
1430 vnet_interface_init (vlib_main_t * vm)
1431 {
1432   vnet_main_t *vnm = vnet_get_main ();
1433   vnet_interface_main_t *im = &vnm->interface_main;
1434   vlib_buffer_t *b = 0;
1435   vnet_buffer_opaque_t *o = 0;
1436   clib_error_t *error;
1437
1438   /*
1439    * Keep people from shooting themselves in the foot.
1440    */
1441   if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
1442     {
1443 #define _(a) if (sizeof(o->a) > sizeof (o->unused))                     \
1444       clib_warning                                                      \
1445         ("FATAL: size of opaque union subtype %s is %d (max %d)",       \
1446          #a, sizeof(o->a), sizeof (o->unused));
1447       foreach_buffer_opaque_union_subtype;
1448 #undef _
1449
1450       return clib_error_return
1451         (0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
1452          sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
1453     }
1454
1455   clib_spinlock_init (&im->sw_if_counter_lock);
1456   clib_spinlock_lock (&im->sw_if_counter_lock); /* should be no need */
1457
1458   vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
1459 #define _(E,n,p)                                                        \
1460   im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n;             \
1461   im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
1462   foreach_simple_interface_counter_name
1463 #undef _
1464     vec_validate (im->combined_sw_if_counters,
1465                   VNET_N_COMBINED_INTERFACE_COUNTER - 1);
1466 #define _(E,n,p)                                                        \
1467   im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n;    \
1468   im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
1469   foreach_combined_interface_counter_name
1470 #undef _
1471     clib_spinlock_unlock (&im->sw_if_counter_lock);
1472
1473   im->device_class_by_name = hash_create_string ( /* size */ 0,
1474                                                  sizeof (uword));
1475
1476   for (vnet_device_class_t *c = vnm->device_class_registrations; c;
1477        c = c->next_class_registration)
1478     vnet_register_device_class (vm, c);
1479
1480   im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
1481                                                        sizeof (uword));
1482
1483   im->rxq_index_by_hw_if_index_and_queue_id =
1484     hash_create_mem (0, sizeof (u64), sizeof (u32));
1485   im->txq_index_by_hw_if_index_and_queue_id =
1486     hash_create_mem (0, sizeof (u64), sizeof (u32));
1487   im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
1488                                                     sizeof (uword));
1489   {
1490     vnet_hw_interface_class_t *c;
1491
1492     c = vnm->hw_interface_class_registrations;
1493
1494     while (c)
1495       {
1496         c->index = vec_len (im->hw_interface_classes);
1497         hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
1498
1499         if (NULL == c->build_rewrite)
1500           c->build_rewrite = default_build_rewrite;
1501         if (NULL == c->update_adjacency)
1502           c->update_adjacency = default_update_adjacency;
1503
1504         vec_add1 (im->hw_interface_classes, c[0]);
1505         c = c->next_class_registration;
1506       }
1507   }
1508
1509   /* init per-thread data */
1510   vec_validate_aligned (im->per_thread_data, vlib_num_workers (),
1511                         CLIB_CACHE_LINE_BYTES);
1512
1513   if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
1514     return error;
1515
1516   vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));
1517
1518   return 0;
1519 }
1520
1521 VLIB_INIT_FUNCTION (vnet_interface_init);
1522
1523 /* Kludge to renumber interface names [only!] */
1524 int
1525 vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
1526 {
1527   int rv;
1528   vnet_main_t *vnm = vnet_get_main ();
1529   vnet_interface_main_t *im = &vnm->interface_main;
1530   vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1531
1532   vnet_device_class_t *dev_class = vnet_get_device_class
1533     (vnm, hi->dev_class_index);
1534
1535   if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
1536     return VNET_API_ERROR_UNIMPLEMENTED;
1537
1538   rv = dev_class->name_renumber (hi, new_show_dev_instance);
1539
1540   if (rv)
1541     return rv;
1542
1543   hash_unset_mem (im->hw_interface_by_name, hi->name);
1544   vec_free (hi->name);
1545   /* Use the mapping we set up to call it Ishmael */
1546   hi->name = format (0, "%U", dev_class->format_device_name,
1547                      hi->dev_instance);
1548
1549   hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
1550   return rv;
1551 }
1552
1553 clib_error_t *
1554 vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
1555 {
1556   vnet_interface_main_t *im = &vnm->interface_main;
1557   vlib_main_t *vm = vnm->vlib_main;
1558   vnet_hw_interface_t *hw;
1559   u8 *old_name;
1560   clib_error_t *error = 0;
1561
1562   hw = vnet_get_hw_interface (vnm, hw_if_index);
1563   if (!hw)
1564     {
1565       return clib_error_return (0,
1566                                 "unable to find hw interface for index %u",
1567                                 hw_if_index);
1568     }
1569
1570   old_name = hw->name;
1571
1572   /* set new hw->name */
1573   hw->name = format (0, "%s", new_name);
1574
1575   /* remove the old name to hw_if_index mapping and install the new one */
1576   hash_unset_mem (im->hw_interface_by_name, old_name);
1577   hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
1578
1579   /* rename tx/output nodes */
1580   vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
1581   vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
1582
1583   /* free the old name vector */
1584   vec_free (old_name);
1585
1586   return error;
1587 }
1588
1589 clib_error_t *
1590 vnet_hw_interface_add_del_mac_address (vnet_main_t * vnm,
1591                                        u32 hw_if_index,
1592                                        const u8 * mac_address, u8 is_add)
1593 {
1594   clib_error_t *error = 0;
1595   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1596
1597   vnet_device_class_t *dev_class =
1598     vnet_get_device_class (vnm, hi->dev_class_index);
1599
1600   if (!hi->hw_address)
1601     {
1602       error =
1603         clib_error_return
1604         (0, "Secondary MAC Addresses not supported for interface index %u",
1605          hw_if_index);
1606       goto done;
1607     }
1608
1609   if (dev_class->mac_addr_add_del_function)
1610     error = dev_class->mac_addr_add_del_function (hi, mac_address, is_add);
1611
1612   if (!error)
1613     {
1614       vnet_hw_interface_class_t *hw_class;
1615
1616       hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1617
1618       if (NULL != hw_class->mac_addr_add_del_function)
1619         error = hw_class->mac_addr_add_del_function (hi, mac_address, is_add);
1620     }
1621
1622   /* If no errors, add to the list of secondary MACs on the ethernet intf */
1623   if (!error)
1624     ethernet_interface_add_del_address (&ethernet_main, hw_if_index,
1625                                         mac_address, is_add);
1626
1627 done:
1628   if (error)
1629     log_err ("hw_add_del_mac_address: %U", format_clib_error, error);
1630   return error;
1631 }
1632
1633 static clib_error_t *
1634 vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
1635                                              u32 hw_if_index,
1636                                              const u8 * mac_address)
1637 {
1638   clib_error_t *error = 0;
1639   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1640
1641   if (hi->hw_address)
1642     {
1643       u8 *old_address = vec_dup (hi->hw_address);
1644       vnet_device_class_t *dev_class =
1645         vnet_get_device_class (vnm, hi->dev_class_index);
1646       if (dev_class->mac_addr_change_function)
1647         {
1648           error =
1649             dev_class->mac_addr_change_function (hi, old_address,
1650                                                  mac_address);
1651         }
1652       if (!error)
1653         {
1654           vnet_hw_interface_class_t *hw_class;
1655
1656           hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1657
1658           if (NULL != hw_class->mac_addr_change_function)
1659             hw_class->mac_addr_change_function (hi, old_address, mac_address);
1660         }
1661       else
1662         {
1663           error =
1664             clib_error_return (0,
1665                                "MAC Address Change is not supported on this interface");
1666         }
1667       vec_free (old_address);
1668     }
1669   else
1670     {
1671       error =
1672         clib_error_return (0,
1673                            "mac address change is not supported for interface index %u",
1674                            hw_if_index);
1675     }
1676   return error;
1677 }
1678
1679 clib_error_t *
1680 vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
1681                                       const u8 * mac_address)
1682 {
1683   return vnet_hw_interface_change_mac_address_helper
1684     (vnm, hw_if_index, mac_address);
1685 }
1686
1687 static int
1688 vnet_sw_interface_check_table_same (u32 unnumbered_sw_if_index,
1689                                     u32 ip_sw_if_index)
1690 {
1691   if (ip4_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1692       ip4_main.fib_index_by_sw_if_index[ip_sw_if_index])
1693     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1694
1695   if (ip4_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1696       ip4_main.mfib_index_by_sw_if_index[ip_sw_if_index])
1697     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1698
1699   if (ip6_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1700       ip6_main.fib_index_by_sw_if_index[ip_sw_if_index])
1701     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1702
1703   if (ip6_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1704       ip6_main.mfib_index_by_sw_if_index[ip_sw_if_index])
1705     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1706
1707   return 0;
1708 }
1709
1710 /* update the unnumbered state of an interface*/
1711 int
1712 vnet_sw_interface_update_unnumbered (u32 unnumbered_sw_if_index,
1713                                      u32 ip_sw_if_index, u8 enable)
1714 {
1715   vnet_main_t *vnm = vnet_get_main ();
1716   vnet_sw_interface_t *si;
1717   u32 was_unnum;
1718   int rv = 0;
1719
1720   si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
1721   was_unnum = (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED);
1722
1723   if (enable)
1724     {
1725       rv = vnet_sw_interface_check_table_same (unnumbered_sw_if_index,
1726                                                ip_sw_if_index);
1727       if (rv != 0)
1728         return rv;
1729       si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
1730       si->unnumbered_sw_if_index = ip_sw_if_index;
1731
1732       ip4_main.lookup_main.if_address_pool_index_by_sw_if_index
1733         [unnumbered_sw_if_index] =
1734         ip4_main.
1735         lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
1736       ip6_main.
1737         lookup_main.if_address_pool_index_by_sw_if_index
1738         [unnumbered_sw_if_index] =
1739         ip6_main.
1740         lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
1741     }
1742   else
1743     {
1744       /*
1745        * Unless the interface is actually unnumbered, don't
1746        * smash e.g. if_address_pool_index_by_sw_if_index
1747        */
1748       if (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
1749         {
1750           si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
1751           si->unnumbered_sw_if_index = (u32) ~0;
1752
1753           ip4_main.lookup_main
1754             .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
1755           ip6_main.lookup_main
1756             .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
1757         }
1758     }
1759
1760   if (was_unnum != (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED))
1761     {
1762       ip4_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
1763       ip6_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
1764     }
1765
1766   return 0;
1767 }
1768
1769 vnet_l3_packet_type_t
1770 vnet_link_to_l3_proto (vnet_link_t link)
1771 {
1772   switch (link)
1773     {
1774     case VNET_LINK_IP4:
1775       return (VNET_L3_PACKET_TYPE_IP4);
1776     case VNET_LINK_IP6:
1777       return (VNET_L3_PACKET_TYPE_IP6);
1778     case VNET_LINK_MPLS:
1779       return (VNET_L3_PACKET_TYPE_MPLS);
1780     case VNET_LINK_ARP:
1781       return (VNET_L3_PACKET_TYPE_ARP);
1782     case VNET_LINK_ETHERNET:
1783     case VNET_LINK_NSH:
1784       ASSERT (0);
1785       break;
1786     }
1787   ASSERT (0);
1788   return (0);
1789 }
1790
1791 vnet_mtu_t
1792 vnet_link_to_mtu (vnet_link_t link)
1793 {
1794   switch (link)
1795     {
1796     case VNET_LINK_IP4:
1797       return (VNET_MTU_IP4);
1798     case VNET_LINK_IP6:
1799       return (VNET_MTU_IP6);
1800     case VNET_LINK_MPLS:
1801       return (VNET_MTU_MPLS);
1802     default:
1803       return (VNET_MTU_L3);
1804     }
1805 }
1806
1807 u8 *
1808 default_build_rewrite (vnet_main_t * vnm,
1809                        u32 sw_if_index,
1810                        vnet_link_t link_type, const void *dst_address)
1811 {
1812   return (NULL);
1813 }
1814
1815 void
1816 default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
1817 {
1818   ip_adjacency_t *adj;
1819
1820   adj = adj_get (ai);
1821
1822   switch (adj->lookup_next_index)
1823     {
1824     case IP_LOOKUP_NEXT_GLEAN:
1825       adj_glean_update_rewrite (ai);
1826       break;
1827     case IP_LOOKUP_NEXT_ARP:
1828     case IP_LOOKUP_NEXT_BCAST:
1829       /*
1830        * default rewrite in neighbour adj
1831        */
1832       adj_nbr_update_rewrite
1833         (ai,
1834          ADJ_NBR_REWRITE_FLAG_COMPLETE,
1835          vnet_build_rewrite_for_sw_interface (vnm,
1836                                               sw_if_index,
1837                                               adj_get_link_type (ai), NULL));
1838       break;
1839     case IP_LOOKUP_NEXT_MCAST:
1840       /*
1841        * mcast traffic also uses default rewrite string with no mcast
1842        * switch time updates.
1843        */
1844       adj_mcast_update_rewrite
1845         (ai,
1846          vnet_build_rewrite_for_sw_interface (vnm,
1847                                               sw_if_index,
1848                                               adj_get_link_type (ai),
1849                                               NULL), 0);
1850       break;
1851     case IP_LOOKUP_NEXT_DROP:
1852     case IP_LOOKUP_NEXT_PUNT:
1853     case IP_LOOKUP_NEXT_LOCAL:
1854     case IP_LOOKUP_NEXT_REWRITE:
1855     case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
1856     case IP_LOOKUP_NEXT_MIDCHAIN:
1857     case IP_LOOKUP_NEXT_ICMP_ERROR:
1858     case IP_LOOKUP_N_NEXT:
1859       ASSERT (0);
1860       break;
1861     }
1862 }
1863
1864 clib_error_t *
1865 vnet_hw_interface_set_rss_queues (vnet_main_t * vnm,
1866                                   vnet_hw_interface_t * hi,
1867                                   clib_bitmap_t * bitmap)
1868 {
1869   clib_error_t *error = 0;
1870   vnet_device_class_t *dev_class =
1871     vnet_get_device_class (vnm, hi->dev_class_index);
1872
1873   if (dev_class->set_rss_queues_function)
1874     {
1875       if (clib_bitmap_count_set_bits (bitmap) == 0)
1876         {
1877           error = clib_error_return (0,
1878                                      "must assign at least one valid rss queue");
1879           goto done;
1880         }
1881
1882       error = dev_class->set_rss_queues_function (vnm, hi, bitmap);
1883     }
1884   else
1885     {
1886       error = clib_error_return (0,
1887                                  "setting rss queues is not supported on this interface");
1888     }
1889
1890   if (!error)
1891     {
1892       clib_bitmap_free (hi->rss_queues);
1893       hi->rss_queues = clib_bitmap_dup (bitmap);
1894     }
1895
1896 done:
1897   if (error)
1898     log_err ("hw_set_rss_queues: %U", format_clib_error, error);
1899   return error;
1900 }
1901
1902 int collect_detailed_interface_stats_flag = 0;
1903
1904 void
1905 collect_detailed_interface_stats_flag_set (void)
1906 {
1907   collect_detailed_interface_stats_flag = 1;
1908 }
1909
1910 void
1911 collect_detailed_interface_stats_flag_clear (void)
1912 {
1913   collect_detailed_interface_stats_flag = 0;
1914 }
1915
1916 static clib_error_t *
1917 collect_detailed_interface_stats_cli (vlib_main_t * vm,
1918                                       unformat_input_t * input,
1919                                       vlib_cli_command_t * cmd)
1920 {
1921   unformat_input_t _line_input, *line_input = &_line_input;
1922   clib_error_t *error = NULL;
1923
1924   /* Get a line of input. */
1925   if (!unformat_user (input, unformat_line_input, line_input))
1926     return clib_error_return (0, "expected enable | disable");
1927
1928   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1929     {
1930       if (unformat (line_input, "enable") || unformat (line_input, "on"))
1931         collect_detailed_interface_stats_flag_set ();
1932       else if (unformat (line_input, "disable")
1933                || unformat (line_input, "off"))
1934         collect_detailed_interface_stats_flag_clear ();
1935       else
1936         {
1937           error = clib_error_return (0, "unknown input `%U'",
1938                                      format_unformat_error, line_input);
1939           goto done;
1940         }
1941     }
1942
1943 done:
1944   unformat_free (line_input);
1945   return error;
1946 }
1947
1948 /* *INDENT-OFF* */
1949 VLIB_CLI_COMMAND (collect_detailed_interface_stats_command, static) = {
1950   .path = "interface collect detailed-stats",
1951   .short_help = "interface collect detailed-stats <enable|disable>",
1952   .function = collect_detailed_interface_stats_cli,
1953 };
1954 /* *INDENT-ON* */
1955
1956 /*
1957  * fd.io coding-style-patch-verification: ON
1958  *
1959  * Local Variables:
1960  * eval: (c-set-style "gnu")
1961  * End:
1962  */