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_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       vnet_sw_interface_t *sw =
 659         pool_elt_at_index (im->sw_interfaces, *sw_if_index);
 660       pool_put (im->sw_interfaces, sw);
 661     }
 662   else
 663     {
 664       vnet_sw_interface_t *sw =
 665         pool_elt_at_index (im->sw_interfaces, *sw_if_index);
 666       log_debug ("create_sw_interface: interface %U (sw_if_index %u) created",
 667                  format_vnet_sw_interface_name, vnm, sw, *sw_if_index);
 668     }
 669
 670   return error;
 671 }
 672
 673 void
 674 vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
 675 {
 676   vnet_interface_main_t *im = &vnm->interface_main;
 677   vnet_sw_interface_t *sw =
 678     pool_elt_at_index (im->sw_interfaces, sw_if_index);
 679
 680   log_debug ("delete_sw_interface: sw_if_index %u, name '%U'",
 681              sw_if_index, format_vnet_sw_if_index_name, vnm, sw_if_index);
 682
 683   /* Check if the interface has config and is removed from L2 BD or XConnect */
 684   vnet_clear_sw_interface_tag (vnm, sw_if_index);
 685
 686   /* Bring down interface in case it is up. */
 687   if (sw->flags != 0)
 688     vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
 689
 690   call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
 691
 692   pool_put (im->sw_interfaces, sw);
 693 }
 694
 695 static clib_error_t *
 696 call_sw_interface_mtu_change_callbacks (vnet_main_t * vnm, u32 sw_if_index)
 697 {
 698   return call_elf_section_interface_callbacks
 699     (vnm, sw_if_index, 0, vnm->sw_interface_mtu_change_functions);
 700 }
 701
 702 void
 703 vnet_sw_interface_set_mtu (vnet_main_t * vnm, u32 sw_if_index, u32 mtu)
 704 {
 705   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 706
 707   if (si->mtu[VNET_MTU_L3] != mtu)
 708     {
 709       si->mtu[VNET_MTU_L3] = mtu;
 710       log_debug ("set_mtu: interface %U, new mtu %u",
 711                  format_vnet_sw_if_index_name, vnm, sw_if_index, mtu);
 712
 713       call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
 714     }
 715 }
 716
 717 void
 718 vnet_sw_interface_set_protocol_mtu (vnet_main_t * vnm, u32 sw_if_index,
 719                                     u32 mtu[])
 720 {
 721   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 722   bool changed = false;
 723   int i;
 724
 725   for (i = 0; i < VNET_N_MTU; i++)
 726     {
 727       if (si->mtu[i] != mtu[i])
 728         {
 729           si->mtu[i] = mtu[i];
 730           changed = true;
 731         }
 732     }
 733   /* Notify interested parties */
 734   if (changed)
 735     {
 736       log_debug ("set_protocol_mtu: interface %U l3 %u ip4 %u ip6 %u mpls %u",
 737                  format_vnet_sw_if_index_name, vnm, sw_if_index,
 738                  mtu[VNET_MTU_L3], mtu[VNET_MTU_IP4], mtu[VNET_MTU_IP6],
 739                  mtu[VNET_MTU_MPLS]);
 740       call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
 741     }
 742 }
 743
 744 void
 745 vnet_sw_interface_ip_directed_broadcast (vnet_main_t * vnm,
 746                                          u32 sw_if_index, u8 enable)
 747 {
 748   vnet_sw_interface_t *si;
 749
 750   si = vnet_get_sw_interface (vnm, sw_if_index);
 751
 752   if (enable)
 753     si->flags |= VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
 754   else
 755     si->flags &= ~VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
 756
 757   ip4_directed_broadcast (sw_if_index, enable);
 758 }
 759
 760 /*
 761  * Reflect a change in hardware MTU on protocol MTUs
 762  */
 763 static walk_rc_t
 764 sw_interface_walk_callback (vnet_main_t * vnm, u32 sw_if_index, void *ctx)
 765 {
 766   u32 *link_mtu = ctx;
 767   vnet_sw_interface_set_mtu (vnm, sw_if_index, *link_mtu);
 768   return WALK_CONTINUE;
 769 }
 770
 771 clib_error_t *
 772 vnet_hw_interface_set_max_frame_size (vnet_main_t *vnm, u32 hw_if_index,
 773                                       u32 fs)
 774 {
 775   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
 776   vnet_hw_interface_class_t *hw_if_class =
 777     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
 778   clib_error_t *err = 0;
 779
 780   log_debug ("set_max_frame_size: interface %s, 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   char *tx_node_name = NULL, *output_node_name = NULL;
 878   vlib_node_t *if_out_node =
 879     vlib_get_node (vm, vnet_interface_output_node.index);
 880
 881   pool_get (im->hw_interfaces, hw);
 882   clib_memset (hw, 0, sizeof (*hw));
 883   hw->trace_classify_table_index = ~0;
 884
 885   hw_index = hw - im->hw_interfaces;
 886   hw->hw_if_index = hw_index;
 887   hw->default_rx_mode = VNET_HW_IF_RX_MODE_POLLING;
 888
 889   if (hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_ETHERNET ||
 890       hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_IP)
 891     hw->hf = vnet_hash_default_function (hw_class->tx_hash_fn_type);
 892
 893   if (dev_class->format_device_name)
 894     hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
 895   else if (hw_class->format_interface_name)
 896     hw->name = format (0, "%U", hw_class->format_interface_name,
 897                        dev_instance);
 898   else
 899     hw->name = format (0, "%s%x", hw_class->name, dev_instance);
 900
 901   if (!im->hw_interface_by_name)
 902     im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
 903                                                 sizeof (hw->name[0]),
 904                                                 sizeof (uword));
 905
 906   hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
 907
 908   /* Make hardware interface point to software interface. */
 909   {
 910     vnet_sw_interface_t sw = {
 911       .type = VNET_SW_INTERFACE_TYPE_HARDWARE,
 912       .flood_class = VNET_FLOOD_CLASS_NORMAL,
 913       .hw_if_index = hw_index
 914     };
 915     hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
 916   }
 917
 918   hw->dev_class_index = dev_class_index;
 919   hw->dev_instance = dev_instance;
 920   hw->hw_class_index = hw_class_index;
 921   hw->hw_instance = hw_instance;
 922
 923   hw->max_rate_bits_per_sec = 0;
 924   vnet_sw_interface_set_mtu (vnm, hw->sw_if_index, 0);
 925
 926   if (dev_class->tx_function == 0 && dev_class->tx_fn_registrations == 0)
 927     goto no_output_nodes;       /* No output/tx nodes to create */
 928
 929   tx_node_name = (char *) format (0, "%v-tx", hw->name);
 930   output_node_name = (char *) format (0, "%v-output", hw->name);
 931
 932   /* If we have previously deleted interface nodes, re-use them. */
 933   if (vec_len (im->deleted_hw_interface_nodes) > 0)
 934     {
 935       vnet_hw_interface_nodes_t *hn;
 936       vlib_node_t *node;
 937       vlib_node_runtime_t *nrt;
 938
 939       hn = vec_end (im->deleted_hw_interface_nodes) - 1;
 940
 941       hw->tx_node_index = hn->tx_node_index;
 942       hw->output_node_index = hn->output_node_index;
 943
 944       vlib_node_rename (vm, hw->tx_node_index, "%v", tx_node_name);
 945       vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name);
 946
 947       foreach_vlib_main ()
 948         {
 949           vnet_interface_output_runtime_t *rt;
 950
 951           rt =
 952             vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
 953           ASSERT (rt->is_deleted == 1);
 954           rt->is_deleted = 0;
 955           rt->hw_if_index = hw_index;
 956           rt->sw_if_index = hw->sw_if_index;
 957           rt->dev_instance = hw->dev_instance;
 958
 959           rt = vlib_node_get_runtime_data (this_vlib_main, hw->tx_node_index);
 960           rt->hw_if_index = hw_index;
 961           rt->sw_if_index = hw->sw_if_index;
 962           rt->dev_instance = hw->dev_instance;
 963         }
 964
 965       /* The new class may differ from the old one.
 966        * Functions have to be updated. */
 967       node = vlib_get_node (vm, hw->output_node_index);
 968       node->format_trace = format_vnet_interface_output_trace;
 969       node->node_fn_registrations = if_out_node->node_fn_registrations;
 970       node->function = if_out_node->function;
 971
 972       foreach_vlib_main ()
 973         {
 974           nrt = vlib_node_get_runtime (this_vlib_main, hw->output_node_index);
 975           nrt->function = node->function;
 976           vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
 977                                           VLIB_NODE_RUNTIME_PERF_RESET);
 978         }
 979
 980       node = vlib_get_node (vm, hw->tx_node_index);
 981       if (dev_class->tx_fn_registrations)
 982         {
 983           node->node_fn_registrations = dev_class->tx_fn_registrations;
 984           node->function = vlib_node_get_preferred_node_fn_variant (
 985             vm, dev_class->tx_fn_registrations);
 986         }
 987       else
 988         node->function = dev_class->tx_function;
 989       node->format_trace = dev_class->format_tx_trace;
 990
 991       foreach_vlib_main ()
 992         {
 993           nrt = vlib_node_get_runtime (this_vlib_main, hw->tx_node_index);
 994           nrt->function = node->function;
 995           vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
 996                                           VLIB_NODE_RUNTIME_PERF_RESET);
 997         }
 998
 999       _vec_len (im->deleted_hw_interface_nodes) -= 1;
1000     }
1001   else
1002     {
1003       vlib_node_registration_t r;
1004       vnet_interface_output_runtime_t rt = {
1005         .hw_if_index = hw_index,
1006         .sw_if_index = hw->sw_if_index,
1007         .dev_instance = hw->dev_instance,
1008         .is_deleted = 0,
1009       };
1010
1011       clib_memset (&r, 0, sizeof (r));
1012       r.type = VLIB_NODE_TYPE_INTERNAL;
1013       r.runtime_data = &rt;
1014       r.runtime_data_bytes = sizeof (rt);
1015       r.scalar_size = sizeof (vnet_hw_if_tx_frame_t);
1016       r.vector_size = sizeof (u32);
1017
1018       r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
1019       r.name = tx_node_name;
1020       if (dev_class->tx_fn_registrations)
1021         {
1022           r.function = 0;
1023           r.node_fn_registrations = dev_class->tx_fn_registrations;
1024         }
1025       else
1026         r.function = dev_class->tx_function;
1027
1028       hw->tx_node_index = vlib_register_node (vm, &r);
1029
1030       vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
1031                                           "error-drop",
1032                                           VNET_INTERFACE_TX_NEXT_DROP);
1033
1034       r.flags = 0;
1035       r.name = output_node_name;
1036       r.format_trace = format_vnet_interface_output_trace;
1037       if (if_out_node->node_fn_registrations)
1038         {
1039           r.function = 0;
1040           r.node_fn_registrations = if_out_node->node_fn_registrations;
1041         }
1042       else
1043         r.function = if_out_node->function;
1044
1045       {
1046         static char *e[] = {
1047           "interface is down",
1048           "interface is deleted",
1049           "no tx queue available",
1050         };
1051
1052         r.n_errors = ARRAY_LEN (e);
1053         r.error_strings = e;
1054       }
1055       hw->output_node_index = vlib_register_node (vm, &r);
1056
1057       vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
1058                                           "error-drop",
1059                                           VNET_INTERFACE_OUTPUT_NEXT_DROP);
1060       vlib_node_add_next_with_slot (vm, hw->output_node_index,
1061                                     hw->tx_node_index,
1062                                     VNET_INTERFACE_OUTPUT_NEXT_TX);
1063       /* add interface to the list of "output-interface" feature arc start nodes
1064          and clone nexts from 1st interface if it exists */
1065       fcm = vnet_feature_get_config_main (im->output_feature_arc_index);
1066       cm = &fcm->config_main;
1067       i = vec_len (cm->start_node_indices);
1068       vec_validate (cm->start_node_indices, i);
1069       cm->start_node_indices[i] = hw->output_node_index;
1070       if (hw_index)
1071         {
1072           /* copy nexts from 1st interface */
1073           vnet_hw_interface_t *first_hw;
1074           vlib_node_t *first_node;
1075
1076           first_hw = vnet_get_hw_interface (vnm, /* hw_if_index */ 0);
1077           first_node = vlib_get_node (vm, first_hw->output_node_index);
1078
1079           /* 1st 2 nexts are already added above */
1080           for (i = 2; i < vec_len (first_node->next_nodes); i++)
1081             vlib_node_add_next_with_slot (vm, hw->output_node_index,
1082                                           first_node->next_nodes[i], i);
1083         }
1084     }
1085
1086   hw->if_out_arc_end_node_next_index = vlib_node_add_next (
1087     vm, vnet_interface_output_arc_end_node.index, hw->tx_node_index);
1088   vnet_if_update_lookup_tables (vnm, hw->sw_if_index);
1089   setup_output_node (vm, hw->output_node_index, hw_class);
1090   setup_tx_node (vm, hw->tx_node_index, dev_class);
1091
1092 no_output_nodes:
1093   /* Call all up/down callbacks with zero flags when interface is created. */
1094   vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
1095                                       VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
1096   vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
1097                                       VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
1098   vec_free (tx_node_name);
1099   vec_free (output_node_name);
1100
1101   return hw_index;
1102 }
1103
1104 void
1105 vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
1106 {
1107   vnet_interface_main_t *im = &vnm->interface_main;
1108   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
1109   vlib_main_t *vm = vnm->vlib_main;
1110   vnet_device_class_t *dev_class = vnet_get_device_class (vnm,
1111                                                           hw->dev_class_index);
1112   /* If it is up, mark it down. */
1113   if (hw->flags != 0)
1114     vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
1115
1116   /* Call delete callbacks. */
1117   call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
1118
1119   /* delete rx & tx queues */
1120   vnet_hw_if_unregister_all_rx_queues (vnm, hw_if_index);
1121   vnet_hw_if_unregister_all_tx_queues (vnm, hw_if_index);
1122   vnet_hw_if_update_runtime_data (vnm, hw_if_index);
1123
1124   /* Delete any sub-interfaces. */
1125   {
1126     u32 id, sw_if_index;
1127     /* *INDENT-OFF* */
1128     hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id,
1129     ({
1130       vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
1131       u64 sup_and_sub_key =
1132         ((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
1133       hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
1134       vnet_delete_sw_interface (vnm, sw_if_index);
1135     }));
1136     hash_free (hw->sub_interface_sw_if_index_by_id);
1137     /* *INDENT-ON* */
1138   }
1139
1140   /* Delete software interface corresponding to hardware interface. */
1141   vnet_delete_sw_interface (vnm, hw->sw_if_index);
1142
1143   if (dev_class->tx_function)
1144     {
1145       /* Put output/tx nodes into recycle pool */
1146       vnet_hw_interface_nodes_t *dn;
1147
1148       foreach_vlib_main ()
1149         {
1150           vnet_interface_output_runtime_t *rt =
1151             vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
1152
1153           /* Mark node runtime as deleted so output node (if called)
1154            * will drop packets. */
1155           rt->is_deleted = 1;
1156         }
1157
1158       vlib_node_rename (vm, hw->output_node_index,
1159                         "interface-%d-output-deleted", hw_if_index);
1160       vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
1161                         hw_if_index);
1162       vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
1163       dn->tx_node_index = hw->tx_node_index;
1164       dn->output_node_index = hw->output_node_index;
1165     }
1166   hash_unset_mem (im->hw_interface_by_name, hw->name);
1167   vec_free (hw->name);
1168   vec_free (hw->hw_address);
1169   vec_free (hw->output_node_thread_runtimes);
1170   pool_put (im->hw_interfaces, hw);
1171 }
1172
1173 void
1174 vnet_hw_interface_walk_sw (vnet_main_t * vnm,
1175                            u32 hw_if_index,
1176                            vnet_hw_sw_interface_walk_t fn, void *ctx)
1177 {
1178   vnet_hw_interface_t *hi;
1179   u32 id, sw_if_index;
1180
1181   hi = vnet_get_hw_interface (vnm, hw_if_index);
1182   /* the super first, then the sub interfaces */
1183   if (WALK_STOP == fn (vnm, hi->sw_if_index, ctx))
1184     return;
1185
1186   /* *INDENT-OFF* */
1187   hash_foreach (id, sw_if_index,
1188                 hi->sub_interface_sw_if_index_by_id,
1189   ({
1190     if (WALK_STOP == fn (vnm, sw_if_index, ctx))
1191       break;
1192   }));
1193   /* *INDENT-ON* */
1194 }
1195
1196 void
1197 vnet_hw_interface_walk (vnet_main_t * vnm,
1198                         vnet_hw_interface_walk_t fn, void *ctx)
1199 {
1200   vnet_interface_main_t *im;
1201   vnet_hw_interface_t *hi;
1202
1203   im = &vnm->interface_main;
1204
1205   /* *INDENT-OFF* */
1206   pool_foreach (hi, im->hw_interfaces)
1207    {
1208     if (WALK_STOP == fn(vnm, hi->hw_if_index, ctx))
1209       break;
1210   }
1211   /* *INDENT-ON* */
1212 }
1213
1214 void
1215 vnet_sw_interface_walk (vnet_main_t * vnm,
1216                         vnet_sw_interface_walk_t fn, void *ctx)
1217 {
1218   vnet_interface_main_t *im;
1219   vnet_sw_interface_t *si;
1220
1221   im = &vnm->interface_main;
1222
1223   /* *INDENT-OFF* */
1224   pool_foreach (si, im->sw_interfaces)
1225   {
1226     if (WALK_STOP == fn (vnm, si, ctx))
1227       break;
1228   }
1229   /* *INDENT-ON* */
1230 }
1231
1232 void
1233 vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
1234                                   u32 hw_class_index, u32 hw_instance)
1235 {
1236   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1237   vnet_hw_interface_class_t *hc =
1238     vnet_get_hw_interface_class (vnm, hw_class_index);
1239
1240   hi->hw_class_index = hw_class_index;
1241   hi->hw_instance = hw_instance;
1242   setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
1243 }
1244
1245 static clib_error_t *
1246 vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
1247                                     u32 hw_class_index, u32 redistribute)
1248 {
1249   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1250   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
1251   vnet_hw_interface_class_t *old_class =
1252     vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1253   vnet_hw_interface_class_t *new_class =
1254     vnet_get_hw_interface_class (vnm, hw_class_index);
1255   vnet_device_class_t *dev_class =
1256     vnet_get_device_class (vnm, hi->dev_class_index);
1257   clib_error_t *error = 0;
1258
1259   /* New class equals old class?  Nothing to do. */
1260   if (hi->hw_class_index == hw_class_index)
1261     return 0;
1262
1263   /* No need (and incorrect since admin up flag may be set) to do error checking when
1264      receiving unserialize message. */
1265   if (redistribute)
1266     {
1267       if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
1268         return clib_error_return (0,
1269                                   "%v must be admin down to change class from %s to %s",
1270                                   hi->name, old_class->name, new_class->name);
1271
1272       /* Make sure interface supports given class. */
1273       if ((new_class->is_valid_class_for_interface
1274            && !new_class->is_valid_class_for_interface (vnm, hw_if_index,
1275                                                         hw_class_index))
1276           || (dev_class->is_valid_class_for_interface
1277               && !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
1278                                                            hw_class_index)))
1279         return clib_error_return (0,
1280                                   "%v class cannot be changed from %s to %s",
1281                                   hi->name, old_class->name, new_class->name);
1282
1283     }
1284
1285   if (old_class->hw_class_change)
1286     old_class->hw_class_change (vnm, hw_if_index, old_class->index,
1287                                 new_class->index);
1288
1289   vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
1290                                     /* instance */ ~0);
1291
1292   if (new_class->hw_class_change)
1293     new_class->hw_class_change (vnm, hw_if_index, old_class->index,
1294                                 new_class->index);
1295
1296   if (dev_class->hw_class_change)
1297     dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
1298
1299   return error;
1300 }
1301
1302 clib_error_t *
1303 vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
1304                              u32 hw_class_index)
1305 {
1306   return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
1307                                              /* redistribute */ 1);
1308 }
1309
1310 static int
1311 vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
1312                                               u32 hw_if_index,
1313                                               u32 node_index,
1314                                               u32 redistribute)
1315 {
1316   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1317   vnet_device_class_t *dev_class = vnet_get_device_class
1318     (vnm, hi->dev_class_index);
1319
1320   if (dev_class->rx_redirect_to_node)
1321     {
1322       dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
1323       return 0;
1324     }
1325
1326   return VNET_API_ERROR_UNIMPLEMENTED;
1327 }
1328
1329 int
1330 vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
1331                                        u32 node_index)
1332 {
1333   return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
1334                                                        node_index,
1335                                                        1 /* redistribute */ );
1336 }
1337
1338 word
1339 vnet_sw_interface_compare (vnet_main_t * vnm,
1340                            uword sw_if_index0, uword sw_if_index1)
1341 {
1342   vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1343   vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
1344   vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
1345   vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
1346
1347   if (h0 != h1)
1348     return vec_cmp (h0->name, h1->name);
1349   return (word) h0->hw_instance - (word) h1->hw_instance;
1350 }
1351
1352 word
1353 vnet_hw_interface_compare (vnet_main_t * vnm,
1354                            uword hw_if_index0, uword hw_if_index1)
1355 {
1356   vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
1357   vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);
1358
1359   if (h0 != h1)
1360     return vec_cmp (h0->name, h1->name);
1361   return (word) h0->hw_instance - (word) h1->hw_instance;
1362 }
1363
1364 int
1365 vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
1366 {
1367   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
1368   if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
1369       (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
1370     return 1;
1371
1372   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1373   vnet_hw_interface_class_t *hc =
1374     vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1375
1376   return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
1377 }
1378
1379 int
1380 vnet_sw_interface_is_nbma (vnet_main_t * vnm, u32 sw_if_index)
1381 {
1382   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
1383   vnet_hw_interface_class_t *hc =
1384     vnet_get_hw_interface_class (vnm, hw->hw_class_index);
1385
1386   return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_NBMA);
1387 }
1388
1389 clib_error_t *
1390 vnet_sw_interface_supports_addressing (vnet_main_t *vnm, u32 sw_if_index)
1391 {
1392   if (sw_if_index == 0)
1393     {
1394       return clib_error_create (
1395         "local0 interface doesn't support IP addressing");
1396     }
1397
1398   if (vnet_sw_interface_is_sub (vnm, sw_if_index))
1399     {
1400       vnet_sw_interface_t *si;
1401       si = vnet_get_sw_interface_or_null (vnm, sw_if_index);
1402       if (si && si->type == VNET_SW_INTERFACE_TYPE_SUB &&
1403           si->sub.eth.flags.exact_match == 0)
1404         {
1405           return clib_error_create (
1406             "sub-interface without exact-match doesn't support IP addressing");
1407         }
1408     }
1409   return NULL;
1410 }
1411
1412 clib_error_t *
1413 vnet_interface_init (vlib_main_t * vm)
1414 {
1415   vnet_main_t *vnm = vnet_get_main ();
1416   vnet_interface_main_t *im = &vnm->interface_main;
1417   vlib_buffer_t *b = 0;
1418   vnet_buffer_opaque_t *o = 0;
1419   clib_error_t *error;
1420
1421   /*
1422    * Keep people from shooting themselves in the foot.
1423    */
1424   if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
1425     {
1426 #define _(a) if (sizeof(o->a) > sizeof (o->unused))                     \
1427       clib_warning                                                      \
1428         ("FATAL: size of opaque union subtype %s is %d (max %d)",       \
1429          #a, sizeof(o->a), sizeof (o->unused));
1430       foreach_buffer_opaque_union_subtype;
1431 #undef _
1432
1433       return clib_error_return
1434         (0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
1435          sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
1436     }
1437
1438   clib_spinlock_init (&im->sw_if_counter_lock);
1439   clib_spinlock_lock (&im->sw_if_counter_lock); /* should be no need */
1440
1441   vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
1442 #define _(E,n,p)                                                        \
1443   im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n;             \
1444   im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
1445   foreach_simple_interface_counter_name
1446 #undef _
1447     vec_validate (im->combined_sw_if_counters,
1448                   VNET_N_COMBINED_INTERFACE_COUNTER - 1);
1449 #define _(E,n,p)                                                        \
1450   im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n;    \
1451   im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
1452   foreach_combined_interface_counter_name
1453 #undef _
1454     clib_spinlock_unlock (&im->sw_if_counter_lock);
1455
1456   im->device_class_by_name = hash_create_string ( /* size */ 0,
1457                                                  sizeof (uword));
1458   {
1459     vnet_device_class_t *c;
1460
1461     c = vnm->device_class_registrations;
1462
1463     while (c)
1464       {
1465         c->index = vec_len (im->device_classes);
1466         hash_set_mem (im->device_class_by_name, c->name, c->index);
1467
1468         /* to avoid confusion, please remove ".tx_function" statement
1469           from VNET_DEVICE_CLASS() if using function candidates */
1470         ASSERT (c->tx_fn_registrations == 0 || c->tx_function == 0);
1471
1472         if (c->tx_fn_registrations)
1473           c->tx_function = vlib_node_get_preferred_node_fn_variant (
1474             vm, c->tx_fn_registrations);
1475
1476         vec_add1 (im->device_classes, c[0]);
1477         c = c->next_class_registration;
1478       }
1479   }
1480
1481   im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
1482                                                        sizeof (uword));
1483
1484   im->rxq_index_by_hw_if_index_and_queue_id =
1485     hash_create_mem (0, sizeof (u64), sizeof (u32));
1486   im->txq_index_by_hw_if_index_and_queue_id =
1487     hash_create_mem (0, sizeof (u64), sizeof (u32));
1488   im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
1489                                                     sizeof (uword));
1490   {
1491     vnet_hw_interface_class_t *c;
1492
1493     c = vnm->hw_interface_class_registrations;
1494
1495     while (c)
1496       {
1497         c->index = vec_len (im->hw_interface_classes);
1498         hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
1499
1500         if (NULL == c->build_rewrite)
1501           c->build_rewrite = default_build_rewrite;
1502         if (NULL == c->update_adjacency)
1503           c->update_adjacency = default_update_adjacency;
1504
1505         vec_add1 (im->hw_interface_classes, c[0]);
1506         c = c->next_class_registration;
1507       }
1508   }
1509
1510   /* init per-thread data */
1511   vec_validate_aligned (im->per_thread_data, vlib_num_workers (),
1512                         CLIB_CACHE_LINE_BYTES);
1513
1514   if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
1515     return error;
1516
1517   vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));
1518
1519   return 0;
1520 }
1521
1522 VLIB_INIT_FUNCTION (vnet_interface_init);
1523
1524 /* Kludge to renumber interface names [only!] */
1525 int
1526 vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
1527 {
1528   int rv;
1529   vnet_main_t *vnm = vnet_get_main ();
1530   vnet_interface_main_t *im = &vnm->interface_main;
1531   vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
1532
1533   vnet_device_class_t *dev_class = vnet_get_device_class
1534     (vnm, hi->dev_class_index);
1535
1536   if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
1537     return VNET_API_ERROR_UNIMPLEMENTED;
1538
1539   rv = dev_class->name_renumber (hi, new_show_dev_instance);
1540
1541   if (rv)
1542     return rv;
1543
1544   hash_unset_mem (im->hw_interface_by_name, hi->name);
1545   vec_free (hi->name);
1546   /* Use the mapping we set up to call it Ishmael */
1547   hi->name = format (0, "%U", dev_class->format_device_name,
1548                      hi->dev_instance);
1549
1550   hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
1551   return rv;
1552 }
1553
1554 clib_error_t *
1555 vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
1556 {
1557   vnet_interface_main_t *im = &vnm->interface_main;
1558   vlib_main_t *vm = vnm->vlib_main;
1559   vnet_hw_interface_t *hw;
1560   u8 *old_name;
1561   clib_error_t *error = 0;
1562
1563   hw = vnet_get_hw_interface (vnm, hw_if_index);
1564   if (!hw)
1565     {
1566       return clib_error_return (0,
1567                                 "unable to find hw interface for index %u",
1568                                 hw_if_index);
1569     }
1570
1571   old_name = hw->name;
1572
1573   /* set new hw->name */
1574   hw->name = format (0, "%s", new_name);
1575
1576   /* remove the old name to hw_if_index mapping and install the new one */
1577   hash_unset_mem (im->hw_interface_by_name, old_name);
1578   hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
1579
1580   /* rename tx/output nodes */
1581   vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
1582   vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
1583
1584   /* free the old name vector */
1585   vec_free (old_name);
1586
1587   return error;
1588 }
1589
1590 clib_error_t *
1591 vnet_hw_interface_add_del_mac_address (vnet_main_t * vnm,
1592                                        u32 hw_if_index,
1593                                        const u8 * mac_address, u8 is_add)
1594 {
1595   clib_error_t *error = 0;
1596   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1597
1598   vnet_device_class_t *dev_class =
1599     vnet_get_device_class (vnm, hi->dev_class_index);
1600
1601   if (!hi->hw_address)
1602     {
1603       error =
1604         clib_error_return
1605         (0, "Secondary MAC Addresses not supported for interface index %u",
1606          hw_if_index);
1607       goto done;
1608     }
1609
1610   if (dev_class->mac_addr_add_del_function)
1611     error = dev_class->mac_addr_add_del_function (hi, mac_address, is_add);
1612
1613   if (!error)
1614     {
1615       vnet_hw_interface_class_t *hw_class;
1616
1617       hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1618
1619       if (NULL != hw_class->mac_addr_add_del_function)
1620         error = hw_class->mac_addr_add_del_function (hi, mac_address, is_add);
1621     }
1622
1623   /* If no errors, add to the list of secondary MACs on the ethernet intf */
1624   if (!error)
1625     ethernet_interface_add_del_address (&ethernet_main, hw_if_index,
1626                                         mac_address, is_add);
1627
1628 done:
1629   if (error)
1630     log_err ("hw_add_del_mac_address: %U", format_clib_error, error);
1631   return error;
1632 }
1633
1634 static clib_error_t *
1635 vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
1636                                              u32 hw_if_index,
1637                                              const u8 * mac_address)
1638 {
1639   clib_error_t *error = 0;
1640   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1641
1642   if (hi->hw_address)
1643     {
1644       u8 *old_address = vec_dup (hi->hw_address);
1645       vnet_device_class_t *dev_class =
1646         vnet_get_device_class (vnm, hi->dev_class_index);
1647       if (dev_class->mac_addr_change_function)
1648         {
1649           error =
1650             dev_class->mac_addr_change_function (hi, old_address,
1651                                                  mac_address);
1652         }
1653       if (!error)
1654         {
1655           vnet_hw_interface_class_t *hw_class;
1656
1657           hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
1658
1659           if (NULL != hw_class->mac_addr_change_function)
1660             hw_class->mac_addr_change_function (hi, old_address, mac_address);
1661         }
1662       else
1663         {
1664           error =
1665             clib_error_return (0,
1666                                "MAC Address Change is not supported on this interface");
1667         }
1668       vec_free (old_address);
1669     }
1670   else
1671     {
1672       error =
1673         clib_error_return (0,
1674                            "mac address change is not supported for interface index %u",
1675                            hw_if_index);
1676     }
1677   return error;
1678 }
1679
1680 clib_error_t *
1681 vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
1682                                       const u8 * mac_address)
1683 {
1684   return vnet_hw_interface_change_mac_address_helper
1685     (vnm, hw_if_index, mac_address);
1686 }
1687
1688 static int
1689 vnet_sw_interface_check_table_same (u32 unnumbered_sw_if_index,
1690                                     u32 ip_sw_if_index)
1691 {
1692   if (ip4_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1693       ip4_main.fib_index_by_sw_if_index[ip_sw_if_index])
1694     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1695
1696   if (ip4_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1697       ip4_main.mfib_index_by_sw_if_index[ip_sw_if_index])
1698     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1699
1700   if (ip6_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1701       ip6_main.fib_index_by_sw_if_index[ip_sw_if_index])
1702     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1703
1704   if (ip6_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
1705       ip6_main.mfib_index_by_sw_if_index[ip_sw_if_index])
1706     return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
1707
1708   return 0;
1709 }
1710
1711 /* update the unnumbered state of an interface*/
1712 int
1713 vnet_sw_interface_update_unnumbered (u32 unnumbered_sw_if_index,
1714                                      u32 ip_sw_if_index, u8 enable)
1715 {
1716   vnet_main_t *vnm = vnet_get_main ();
1717   vnet_sw_interface_t *si;
1718   u32 was_unnum;
1719   int rv = 0;
1720
1721   si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
1722   was_unnum = (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED);
1723
1724   if (enable)
1725     {
1726       rv = vnet_sw_interface_check_table_same (unnumbered_sw_if_index,
1727                                                ip_sw_if_index);
1728       if (rv != 0)
1729         return rv;
1730       si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
1731       si->unnumbered_sw_if_index = ip_sw_if_index;
1732
1733       ip4_main.lookup_main.if_address_pool_index_by_sw_if_index
1734         [unnumbered_sw_if_index] =
1735         ip4_main.
1736         lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
1737       ip6_main.
1738         lookup_main.if_address_pool_index_by_sw_if_index
1739         [unnumbered_sw_if_index] =
1740         ip6_main.
1741         lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
1742     }
1743   else
1744     {
1745       /*
1746        * Unless the interface is actually unnumbered, don't
1747        * smash e.g. if_address_pool_index_by_sw_if_index
1748        */
1749       if (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
1750         {
1751           si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
1752           si->unnumbered_sw_if_index = (u32) ~0;
1753
1754           ip4_main.lookup_main
1755             .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
1756           ip6_main.lookup_main
1757             .if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
1758         }
1759     }
1760
1761   if (was_unnum != (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED))
1762     {
1763       ip4_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
1764       ip6_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
1765     }
1766
1767   return 0;
1768 }
1769
1770 vnet_l3_packet_type_t
1771 vnet_link_to_l3_proto (vnet_link_t link)
1772 {
1773   switch (link)
1774     {
1775     case VNET_LINK_IP4:
1776       return (VNET_L3_PACKET_TYPE_IP4);
1777     case VNET_LINK_IP6:
1778       return (VNET_L3_PACKET_TYPE_IP6);
1779     case VNET_LINK_MPLS:
1780       return (VNET_L3_PACKET_TYPE_MPLS);
1781     case VNET_LINK_ARP:
1782       return (VNET_L3_PACKET_TYPE_ARP);
1783     case VNET_LINK_ETHERNET:
1784     case VNET_LINK_NSH:
1785       ASSERT (0);
1786       break;
1787     }
1788   ASSERT (0);
1789   return (0);
1790 }
1791
1792 vnet_mtu_t
1793 vnet_link_to_mtu (vnet_link_t link)
1794 {
1795   switch (link)
1796     {
1797     case VNET_LINK_IP4:
1798       return (VNET_MTU_IP4);
1799     case VNET_LINK_IP6:
1800       return (VNET_MTU_IP6);
1801     case VNET_LINK_MPLS:
1802       return (VNET_MTU_MPLS);
1803     default:
1804       return (VNET_MTU_L3);
1805     }
1806 }
1807
1808 u8 *
1809 default_build_rewrite (vnet_main_t * vnm,
1810                        u32 sw_if_index,
1811                        vnet_link_t link_type, const void *dst_address)
1812 {
1813   return (NULL);
1814 }
1815
1816 void
1817 default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
1818 {
1819   ip_adjacency_t *adj;
1820
1821   adj = adj_get (ai);
1822
1823   switch (adj->lookup_next_index)
1824     {
1825     case IP_LOOKUP_NEXT_GLEAN:
1826       adj_glean_update_rewrite (ai);
1827       break;
1828     case IP_LOOKUP_NEXT_ARP:
1829     case IP_LOOKUP_NEXT_BCAST:
1830       /*
1831        * default rewrite in neighbour adj
1832        */
1833       adj_nbr_update_rewrite
1834         (ai,
1835          ADJ_NBR_REWRITE_FLAG_COMPLETE,
1836          vnet_build_rewrite_for_sw_interface (vnm,
1837                                               sw_if_index,
1838                                               adj_get_link_type (ai), NULL));
1839       break;
1840     case IP_LOOKUP_NEXT_MCAST:
1841       /*
1842        * mcast traffic also uses default rewrite string with no mcast
1843        * switch time updates.
1844        */
1845       adj_mcast_update_rewrite
1846         (ai,
1847          vnet_build_rewrite_for_sw_interface (vnm,
1848                                               sw_if_index,
1849                                               adj_get_link_type (ai),
1850                                               NULL), 0);
1851       break;
1852     case IP_LOOKUP_NEXT_DROP:
1853     case IP_LOOKUP_NEXT_PUNT:
1854     case IP_LOOKUP_NEXT_LOCAL:
1855     case IP_LOOKUP_NEXT_REWRITE:
1856     case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
1857     case IP_LOOKUP_NEXT_MIDCHAIN:
1858     case IP_LOOKUP_NEXT_ICMP_ERROR:
1859     case IP_LOOKUP_N_NEXT:
1860       ASSERT (0);
1861       break;
1862     }
1863 }
1864
1865 clib_error_t *
1866 vnet_hw_interface_set_rss_queues (vnet_main_t * vnm,
1867                                   vnet_hw_interface_t * hi,
1868                                   clib_bitmap_t * bitmap)
1869 {
1870   clib_error_t *error = 0;
1871   vnet_device_class_t *dev_class =
1872     vnet_get_device_class (vnm, hi->dev_class_index);
1873
1874   if (dev_class->set_rss_queues_function)
1875     {
1876       if (clib_bitmap_count_set_bits (bitmap) == 0)
1877         {
1878           error = clib_error_return (0,
1879                                      "must assign at least one valid rss queue");
1880           goto done;
1881         }
1882
1883       error = dev_class->set_rss_queues_function (vnm, hi, bitmap);
1884     }
1885   else
1886     {
1887       error = clib_error_return (0,
1888                                  "setting rss queues is not supported on this interface");
1889     }
1890
1891   if (!error)
1892     {
1893       clib_bitmap_free (hi->rss_queues);
1894       hi->rss_queues = clib_bitmap_dup (bitmap);
1895     }
1896
1897 done:
1898   if (error)
1899     log_err ("hw_set_rss_queues: %U", format_clib_error, error);
1900   return error;
1901 }
1902
1903 int collect_detailed_interface_stats_flag = 0;
1904
1905 void
1906 collect_detailed_interface_stats_flag_set (void)
1907 {
1908   collect_detailed_interface_stats_flag = 1;
1909 }
1910
1911 void
1912 collect_detailed_interface_stats_flag_clear (void)
1913 {
1914   collect_detailed_interface_stats_flag = 0;
1915 }
1916
1917 static clib_error_t *
1918 collect_detailed_interface_stats_cli (vlib_main_t * vm,
1919                                       unformat_input_t * input,
1920                                       vlib_cli_command_t * cmd)
1921 {
1922   unformat_input_t _line_input, *line_input = &_line_input;
1923   clib_error_t *error = NULL;
1924
1925   /* Get a line of input. */
1926   if (!unformat_user (input, unformat_line_input, line_input))
1927     return clib_error_return (0, "expected enable | disable");
1928
1929   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1930     {
1931       if (unformat (line_input, "enable") || unformat (line_input, "on"))
1932         collect_detailed_interface_stats_flag_set ();
1933       else if (unformat (line_input, "disable")
1934                || unformat (line_input, "off"))
1935         collect_detailed_interface_stats_flag_clear ();
1936       else
1937         {
1938           error = clib_error_return (0, "unknown input `%U'",
1939                                      format_unformat_error, line_input);
1940           goto done;
1941         }
1942     }
1943
1944 done:
1945   unformat_free (line_input);
1946   return error;
1947 }
1948
1949 /* *INDENT-OFF* */
1950 VLIB_CLI_COMMAND (collect_detailed_interface_stats_command, static) = {
1951   .path = "interface collect detailed-stats",
1952   .short_help = "interface collect detailed-stats <enable|disable>",
1953   .function = collect_detailed_interface_stats_cli,
1954 };
1955 /* *INDENT-ON* */
1956
1957 /*
1958  * fd.io coding-style-patch-verification: ON
1959  *
1960  * Local Variables:
1961  * eval: (c-set-style "gnu")
1962  * End:
1963  */