src/vnet/interface_funcs.h

   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_funcs.h: VNET interfaces/sub-interfaces exported functions
  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 #ifndef included_vnet_interface_funcs_h
  41 #define included_vnet_interface_funcs_h
  42
  43 always_inline vnet_hw_interface_t *
  44 vnet_get_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
  45 {
  46   return pool_elt_at_index (vnm->interface_main.hw_interfaces, hw_if_index);
  47 }
  48
  49 always_inline vnet_hw_interface_t *
  50 vnet_get_hw_interface_or_null (vnet_main_t * vnm, u32 hw_if_index)
  51 {
  52   if (!pool_is_free_index (vnm->interface_main.hw_interfaces, hw_if_index))
  53     return pool_elt_at_index (vnm->interface_main.hw_interfaces, hw_if_index);
  54   return (NULL);
  55 }
  56
  57 always_inline vnet_sw_interface_t *
  58 vnet_get_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
  59 {
  60   return pool_elt_at_index (vnm->interface_main.sw_interfaces, sw_if_index);
  61 }
  62
  63 always_inline vnet_sw_interface_t *
  64 vnet_get_sw_interface_or_null (vnet_main_t * vnm, u32 sw_if_index)
  65 {
  66   if (!pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
  67     return pool_elt_at_index (vnm->interface_main.sw_interfaces, sw_if_index);
  68   return (NULL);
  69 }
  70
  71 always_inline vnet_sw_interface_t *
  72 vnet_get_hw_sw_interface (vnet_main_t * vnm, u32 hw_if_index)
  73 {
  74   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  75   vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, hw->sw_if_index);
  76   ASSERT (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
  77   return sw;
  78 }
  79
  80 always_inline vnet_sw_interface_t *
  81 vnet_get_sup_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
  82 {
  83   vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
  84   if (sw->type == VNET_SW_INTERFACE_TYPE_SUB ||
  85       sw->type == VNET_SW_INTERFACE_TYPE_PIPE ||
  86       sw->type == VNET_SW_INTERFACE_TYPE_P2P)
  87     sw = vnet_get_sw_interface (vnm, sw->sup_sw_if_index);
  88   return sw;
  89 }
  90
  91 always_inline vnet_hw_interface_t *
  92 vnet_get_sup_hw_interface (vnet_main_t * vnm, u32 sw_if_index)
  93 {
  94   vnet_sw_interface_t *sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
  95   ASSERT ((sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE) ||
  96           (sw->type == VNET_SW_INTERFACE_TYPE_PIPE));
  97   return vnet_get_hw_interface (vnm, sw->hw_if_index);
  98 }
  99
 100 always_inline vnet_hw_interface_t *
 101 vnet_get_sup_hw_interface_api_visible_or_null (vnet_main_t * vnm,
 102                                                u32 sw_if_index)
 103 {
 104   vnet_sw_interface_t *si;
 105   if (PREDICT_FALSE (pool_is_free_index (vnm->interface_main.sw_interfaces,
 106                                          sw_if_index)))
 107     return NULL;
 108   si = vnet_get_sup_sw_interface (vnm, sw_if_index);
 109   if (PREDICT_FALSE (si->flags & VNET_SW_INTERFACE_FLAG_HIDDEN))
 110     return NULL;
 111   ASSERT ((si->type == VNET_SW_INTERFACE_TYPE_HARDWARE) ||
 112           (si->type == VNET_SW_INTERFACE_TYPE_PIPE));
 113   return vnet_get_hw_interface (vnm, si->hw_if_index);
 114 }
 115
 116 always_inline vnet_hw_interface_class_t *
 117 vnet_get_hw_interface_class (vnet_main_t * vnm, u32 hw_class_index)
 118 {
 119   return vec_elt_at_index (vnm->interface_main.hw_interface_classes,
 120                            hw_class_index);
 121 }
 122
 123 always_inline vnet_device_class_t *
 124 vnet_get_device_class (vnet_main_t * vnm, u32 dev_class_index)
 125 {
 126   return vec_elt_at_index (vnm->interface_main.device_classes,
 127                            dev_class_index);
 128 }
 129
 130 static inline u8 *
 131 vnet_get_sw_interface_tag (vnet_main_t * vnm, u32 sw_if_index)
 132 {
 133   uword *p;
 134   p = hash_get (vnm->interface_tag_by_sw_if_index, sw_if_index);
 135   if (p)
 136     return ((u8 *) p[0]);
 137   return 0;
 138 }
 139
 140 static inline void
 141 vnet_set_sw_interface_tag (vnet_main_t * vnm, u8 * tag, u32 sw_if_index)
 142 {
 143   uword *p;
 144   p = hash_get (vnm->interface_tag_by_sw_if_index, sw_if_index);
 145   if (p)
 146     {
 147       u8 *oldtag = (u8 *) p[0];
 148       hash_unset (vnm->interface_tag_by_sw_if_index, sw_if_index);
 149       vec_free (oldtag);
 150     }
 151
 152   hash_set (vnm->interface_tag_by_sw_if_index, sw_if_index, tag);
 153 }
 154
 155 static inline void
 156 vnet_clear_sw_interface_tag (vnet_main_t * vnm, u32 sw_if_index)
 157 {
 158   uword *p;
 159   p = hash_get (vnm->interface_tag_by_sw_if_index, sw_if_index);
 160   if (p)
 161     {
 162       u8 *oldtag = (u8 *) p[0];
 163       hash_unset (vnm->interface_tag_by_sw_if_index, sw_if_index);
 164       vec_free (oldtag);
 165     }
 166 }
 167
 168 /**
 169  * Walk return code
 170  */
 171 typedef enum walk_rc_t_
 172 {
 173   WALK_STOP,
 174   WALK_CONTINUE,
 175 } walk_rc_t;
 176
 177 /**
 178  * Call back walk type for walking SW indices on a HW interface
 179  */
 180 typedef walk_rc_t (*vnet_hw_sw_interface_walk_t) (vnet_main_t * vnm,
 181                                                   u32 sw_if_index, void *ctx);
 182
 183 /**
 184  * @brief
 185  * Walk the SW interfaces on a HW interface - this is the super
 186  * interface and any sub-interfaces.
 187  */
 188 void vnet_hw_interface_walk_sw (vnet_main_t * vnm,
 189                                 u32 hw_if_index,
 190                                 vnet_hw_sw_interface_walk_t fn, void *ctx);
 191
 192 /**
 193  * Call back walk type for walking SW indices on a HW interface
 194  */
 195 typedef walk_rc_t (*vnet_sw_interface_walk_t) (vnet_main_t * vnm,
 196                                                vnet_sw_interface_t * si,
 197                                                void *ctx);
 198
 199 /**
 200  * @brief
 201  * Walk all the SW interfaces in the system.
 202  */
 203 void vnet_sw_interface_walk (vnet_main_t * vnm,
 204                              vnet_sw_interface_walk_t fn, void *ctx);
 205
 206
 207 /**
 208  * Call back walk type for walking all HW indices
 209  */
 210 typedef walk_rc_t (*vnet_hw_interface_walk_t) (vnet_main_t * vnm,
 211                                                u32 hw_if_index, void *ctx);
 212
 213 /**
 214  * @brief
 215  * Walk all the HW interface
 216  */
 217 void vnet_hw_interface_walk (vnet_main_t * vnm,
 218                              vnet_hw_interface_walk_t fn, void *ctx);
 219
 220 /* Register a hardware interface instance. */
 221 u32 vnet_register_interface (vnet_main_t * vnm,
 222                              u32 dev_class_index,
 223                              u32 dev_instance,
 224                              u32 hw_class_index, u32 hw_instance);
 225
 226 /**
 227  * Set interface output node - for interface registered without its output/tx
 228  * nodes created because its VNET_DEVICE_CLASS did not specify any tx_function.
 229  * This is typically the case for tunnel interfaces.
 230  */
 231 void vnet_set_interface_output_node (vnet_main_t * vnm,
 232                                      u32 hw_if_index, u32 node_index);
 233
 234 void vnet_set_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index,
 235                                         u8 *output_node);
 236 void vnet_reset_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index);
 237
 238 /* Creates a software interface given template. */
 239 clib_error_t *vnet_create_sw_interface (vnet_main_t * vnm,
 240                                         vnet_sw_interface_t * template,
 241                                         u32 * sw_if_index);
 242
 243 void vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index);
 244 void vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index);
 245 int vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index);
 246 int vnet_sw_interface_is_nbma (vnet_main_t * vnm, u32 sw_if_index);
 247
 248 always_inline vnet_sw_interface_flags_t
 249 vnet_sw_interface_get_flags (vnet_main_t * vnm, u32 sw_if_index)
 250 {
 251   vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
 252   return sw->flags;
 253 }
 254
 255 always_inline uword
 256 vnet_sw_interface_is_valid (vnet_main_t * vnm, u32 sw_if_index)
 257 {
 258   return !pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index);
 259 }
 260
 261 always_inline uword
 262 vnet_hw_interface_is_valid (vnet_main_t * vnm, u32 hw_if_index)
 263 {
 264   return !pool_is_free_index (vnm->interface_main.hw_interfaces, hw_if_index);
 265 }
 266
 267
 268 always_inline uword
 269 vnet_sw_interface_is_admin_up (vnet_main_t * vnm, u32 sw_if_index)
 270 {
 271   return (vnet_sw_interface_get_flags (vnm, sw_if_index) &
 272           VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
 273 }
 274
 275 always_inline uword
 276 vnet_swif_is_api_visible (vnet_sw_interface_t * si)
 277 {
 278   return !(si->flags & VNET_SW_INTERFACE_FLAG_HIDDEN);
 279 }
 280
 281 always_inline uword
 282 vnet_sw_interface_is_api_visible (vnet_main_t * vnm, u32 sw_if_index)
 283 {
 284   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
 285   return vnet_swif_is_api_visible (si);
 286 }
 287
 288 always_inline uword
 289 vnet_sw_interface_is_api_valid (vnet_main_t * vnm, u32 sw_if_index)
 290 {
 291   return !pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index)
 292     && vnet_sw_interface_is_api_visible (vnm, sw_if_index);
 293 }
 294
 295 always_inline const u8 *
 296 vnet_sw_interface_get_hw_address (vnet_main_t * vnm, u32 sw_if_index)
 297 {
 298   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
 299   return hw->hw_address;
 300 }
 301
 302 always_inline uword
 303 vnet_hw_interface_get_flags (vnet_main_t * vnm, u32 hw_if_index)
 304 {
 305   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
 306   return hw->flags;
 307 }
 308
 309 always_inline u32
 310 vnet_hw_interface_get_mtu (vnet_main_t * vnm, u32 hw_if_index)
 311 {
 312   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
 313   return hw->max_frame_size - hw->frame_overhead;
 314 }
 315
 316 always_inline u32
 317 vnet_sw_interface_get_mtu (vnet_main_t * vnm, u32 sw_if_index, vnet_mtu_t af)
 318 {
 319   vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
 320   u32 mtu;
 321   mtu = sw->mtu[af] > 0 ? sw->mtu[af] : sw->mtu[VNET_MTU_L3];
 322   if (mtu == 0)
 323     return 9000;                /* $$$ Deal with interface-types not setting MTU */
 324   return mtu;
 325 }
 326
 327 always_inline uword
 328 vnet_hw_interface_is_link_up (vnet_main_t * vnm, u32 hw_if_index)
 329 {
 330   return ((vnet_hw_interface_get_flags (vnm, hw_if_index) &
 331            VNET_HW_INTERFACE_FLAG_LINK_UP) != 0);
 332 }
 333
 334 always_inline uword
 335 vnet_sw_interface_is_link_up (vnet_main_t * vnm, u32 sw_if_index)
 336 {
 337   vnet_sw_interface_t *sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
 338
 339   return (vnet_hw_interface_is_link_up (vnm, sw->hw_if_index));
 340 }
 341
 342 always_inline uword
 343 vnet_sw_interface_is_up (vnet_main_t * vnm, u32 sw_if_index)
 344 {
 345   return (vnet_sw_interface_is_admin_up (vnm, sw_if_index) &&
 346           vnet_sw_interface_is_link_up (vnm, sw_if_index));
 347 }
 348
 349 always_inline uword
 350 vnet_sw_interface_is_sub (vnet_main_t *vnm, u32 sw_if_index)
 351 {
 352   vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
 353
 354   return (sw->sw_if_index != sw->sup_sw_if_index);
 355 }
 356
 357 clib_error_t *vnet_sw_interface_supports_addressing (vnet_main_t *vnm,
 358                                                      u32 sw_if_index);
 359
 360 always_inline vlib_frame_t *
 361 vnet_get_frame_to_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
 362 {
 363   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
 364   return vlib_get_frame_to_node (vlib_get_main (), hw->output_node_index);
 365 }
 366
 367 always_inline void
 368 vnet_put_frame_to_sw_interface (vnet_main_t * vnm, u32 sw_if_index,
 369                                 vlib_frame_t * f)
 370 {
 371   vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
 372   return vlib_put_frame_to_node (vlib_get_main (), hw->output_node_index, f);
 373 }
 374
 375 always_inline void
 376 vnet_hw_interface_set_link_speed (vnet_main_t * vnm, u32 hw_if_index,
 377                                   u32 link_speed)
 378 {
 379   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
 380   hw->link_speed = link_speed;
 381 }
 382
 383 /* Change interface flags (e.g. up, down, enable, disable). */
 384 clib_error_t *vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index,
 385                                            vnet_hw_interface_flags_t flags);
 386
 387 /* Change interface flags (e.g. up, down, enable, disable). */
 388 clib_error_t *vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index,
 389                                            vnet_sw_interface_flags_t flags);
 390
 391 void vnet_sw_interface_admin_up (vnet_main_t * vnm, u32 sw_if_index);
 392 void vnet_sw_interface_admin_down (vnet_main_t * vnm, u32 sw_if_index);
 393
 394 /* Change interface class. */
 395 clib_error_t *vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
 396                                            u32 new_hw_class_index);
 397
 398 /* Redirect rx pkts to node */
 399 int vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
 400                                            u32 node_index);
 401
 402 void vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
 403                                        u32 hw_class_index, u32 hw_instance);
 404
 405 /* Rename interface */
 406 clib_error_t *vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index,
 407                                      char *new_name);
 408
 409 /* Add/delete secondary interface mac address*/
 410 clib_error_t *vnet_hw_interface_add_del_mac_address (vnet_main_t * vnm,
 411                                                      u32 hw_if_index,
 412                                                      const u8 * mac_address,
 413                                                      u8 is_add);
 414
 415 /* Change interface mac address*/
 416 clib_error_t *vnet_hw_interface_change_mac_address (vnet_main_t * vnm,
 417                                                     u32 hw_if_index,
 418                                                     const u8 * mac_address);
 419
 420 /* Change rx-mode */
 421 clib_error_t *set_hw_interface_change_rx_mode (vnet_main_t * vnm,
 422                                                u32 hw_if_index,
 423                                                u8 queue_id_valid,
 424                                                u32 queue_id,
 425                                                vnet_hw_if_rx_mode mode);
 426
 427 /* Set rx-placement on the interface */
 428 clib_error_t *set_hw_interface_rx_placement (u32 hw_if_index, u32 queue_id,
 429                                              u32 thread_index, u8 is_main);
 430 /* Set tx-queue placement on the interface */
 431 int set_hw_interface_tx_queue (u32 hw_if_index, u32 queue_id, uword *bitmap);
 432
 433 /* Set the Max Frame Size on the HW interface */
 434 clib_error_t *vnet_hw_interface_set_max_frame_size (vnet_main_t *vnm,
 435                                                     u32 hw_if_index,
 436                                                     u32 max_frame_size);
 437 /* Set the MTU on the HW interface */
 438 clib_error_t *vnet_hw_interface_set_mtu (vnet_main_t *vnm, u32 hw_if_index,
 439                                          u32 mtu);
 440
 441 /* Set the MTU on the SW interface */
 442 void vnet_sw_interface_set_mtu (vnet_main_t * vnm, u32 sw_if_index, u32 mtu);
 443 void vnet_sw_interface_set_protocol_mtu (vnet_main_t * vnm, u32 sw_if_index,
 444                                          u32 mtu[]);
 445
 446 /* update the unnumbered state of an interface */
 447 int vnet_sw_interface_update_unnumbered (u32 sw_if_index, u32 ip_sw_if_index,
 448                                          u8 enable);
 449
 450 int vnet_sw_interface_stats_collect_enable_disable (u32 sw_if_index,
 451                                                     u8 enable);
 452 void vnet_sw_interface_ip_directed_broadcast (vnet_main_t * vnm,
 453                                               u32 sw_if_index, u8 enable);
 454
 455 /* set interface rss queues */
 456 clib_error_t *vnet_hw_interface_set_rss_queues (vnet_main_t * vnm,
 457                                                 vnet_hw_interface_t * hi,
 458                                                 clib_bitmap_t * bitmap);
 459
 460 void vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index);
 461
 462 /* Formats sw/hw interface. */
 463 format_function_t format_vnet_hw_interface;
 464 format_function_t format_vnet_hw_if_rx_mode;
 465 format_function_t format_vnet_hw_if_index_name;
 466 format_function_t format_vnet_sw_interface;
 467 format_function_t format_vnet_sw_interface_name;
 468 format_function_t format_vnet_sw_interface_name_override;
 469 format_function_t format_vnet_sw_if_index_name;
 470 format_function_t format_vnet_sw_interface_flags;
 471
 472 /* Parses sw/hw interface name -> index. */
 473 unformat_function_t unformat_vnet_sw_interface;
 474 unformat_function_t unformat_vnet_hw_interface;
 475 unformat_function_t unformat_vnet_buffer_flags;
 476 unformat_function_t unformat_vnet_buffer_offload_flags;
 477
 478 /* Parses interface flags (up, down, enable, disable, etc.) */
 479 unformat_function_t unformat_vnet_hw_interface_flags;
 480 unformat_function_t unformat_vnet_sw_interface_flags;
 481
 482 /* VLAN tag-rewrite */
 483 format_function_t format_vtr;
 484
 485 /* Node runtime for interface output function. */
 486 struct vnet_dev_tx_queue;
 487 typedef struct
 488 {
 489   u32 hw_if_index;
 490   u32 sw_if_index;
 491   u32 dev_instance;
 492   u8 is_deleted;
 493   struct vnet_dev_tx_queue *tx_queue;
 494 } vnet_interface_output_runtime_t;
 495
 496 /* Interface output function. */
 497 word vnet_sw_interface_compare (vnet_main_t * vnm, uword sw_if_index0,
 498                                 uword sw_if_index1);
 499 word vnet_hw_interface_compare (vnet_main_t * vnm, uword hw_if_index0,
 500                                 uword hw_if_index1);
 501
 502 typedef enum
 503 {
 504   VNET_INTERFACE_OUTPUT_NEXT_DROP,
 505   VNET_INTERFACE_OUTPUT_NEXT_TX,
 506 } vnet_interface_output_next_t;
 507
 508 typedef enum
 509 {
 510   VNET_INTERFACE_TX_NEXT_DROP,
 511   VNET_INTERFACE_TX_N_NEXT,
 512 } vnet_interface_tx_next_t;
 513
 514 #define VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT VNET_INTERFACE_TX_N_NEXT
 515 #define VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT (VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT + 1)
 516
 517 typedef enum
 518 {
 519   VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN,
 520   VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED,
 521   VNET_INTERFACE_OUTPUT_ERROR_NO_TX_QUEUE,
 522 } vnet_interface_output_error_t;
 523
 524 /* Format for interface output traces. */
 525 u8 *format_vnet_interface_output_trace (u8 * s, va_list * va);
 526
 527 serialize_function_t serialize_vnet_interface_state,
 528   unserialize_vnet_interface_state;
 529
 530 /**
 531  * @brief Add buffer (vlib_buffer_t) to the trace
 532  *
 533  * @param *pm - pcap_main_t
 534  * @param *vm - vlib_main_t
 535  * @param buffer_index - u32
 536  * @param n_bytes_in_trace - u32
 537  *
 538  */
 539 static inline void
 540 pcap_add_buffer (pcap_main_t *pm, struct vlib_main_t *vm, u32 buffer_index,
 541                  u32 n_bytes_in_trace)
 542 {
 543   vlib_buffer_t *b = vlib_get_buffer (vm, buffer_index);
 544   u32 n = vlib_buffer_length_in_chain (vm, b);
 545   i32 n_left = clib_min (n_bytes_in_trace, n);
 546   f64 time_now = vlib_time_now (vm);
 547   void *d;
 548
 549   if (PREDICT_TRUE (pm->n_packets_captured < pm->n_packets_to_capture))
 550     {
 551       time_now += vm->clib_time.init_reference_time;
 552       clib_spinlock_lock_if_init (&pm->lock);
 553       d = pcap_add_packet (pm, time_now, n_left, n);
 554       while (1)
 555         {
 556           u32 copy_length = clib_min ((u32) n_left, b->current_length);
 557           clib_memcpy_fast (d, b->data + b->current_data, copy_length);
 558           n_left -= b->current_length;
 559           if (n_left <= 0)
 560             break;
 561           d += b->current_length;
 562           ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT);
 563           b = vlib_get_buffer (vm, b->next_buffer);
 564         }
 565       clib_spinlock_unlock_if_init (&pm->lock);
 566     }
 567 }
 568
 569 typedef struct
 570 {
 571   vnet_hw_if_caps_t val;
 572   vnet_hw_if_caps_t mask;
 573 } vnet_hw_if_caps_change_t;
 574
 575 void vnet_hw_if_change_caps (vnet_main_t *vnm, u32 hw_if_index,
 576                              vnet_hw_if_caps_change_t *caps);
 577
 578 static_always_inline void
 579 vnet_hw_if_set_caps (vnet_main_t *vnm, u32 hw_if_index, vnet_hw_if_caps_t caps)
 580 {
 581   vnet_hw_if_caps_change_t cc = { .val = caps, .mask = caps };
 582   vnet_hw_if_change_caps (vnm, hw_if_index, &cc);
 583 }
 584
 585 static_always_inline void
 586 vnet_hw_if_unset_caps (vnet_main_t *vnm, u32 hw_if_index,
 587                        vnet_hw_if_caps_t caps)
 588 {
 589   vnet_hw_if_caps_change_t cc = { .val = 0, .mask = caps };
 590   vnet_hw_if_change_caps (vnm, hw_if_index, &cc);
 591 }
 592
 593 #endif /* included_vnet_interface_funcs_h */
 594
 595 /*
 596  * fd.io coding-style-patch-verification: ON
 597  *
 598  * Local Variables:
 599  * eval: (c-set-style "gnu")
 600  * End:
 601  */