src/vnet/interface.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.h: 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 #ifndef included_vnet_interface_h
  41 #define included_vnet_interface_h
  42
  43 #include <vlib/vlib.h>
  44 #include <vppinfra/pcap.h>
  45 #include <vnet/l3_types.h>
  46
  47 struct vnet_main_t;
  48 struct vnet_hw_interface_t;
  49 struct vnet_sw_interface_t;
  50 struct ip46_address_t;
  51
  52 typedef enum
  53 {
  54   VNET_HW_INTERFACE_RX_MODE_UNKNOWN,
  55   VNET_HW_INTERFACE_RX_MODE_POLLING,
  56   VNET_HW_INTERFACE_RX_MODE_INTERRUPT,
  57   VNET_HW_INTERFACE_RX_MODE_ADAPTIVE,
  58   VNET_HW_INTERFACE_RX_MODE_DEFAULT,
  59   VNET_HW_INTERFACE_NUM_RX_MODES,
  60 } vnet_hw_interface_rx_mode;
  61
  62 /* Interface up/down callback. */
  63 typedef clib_error_t *(vnet_interface_function_t)
  64   (struct vnet_main_t * vnm, u32 if_index, u32 flags);
  65
  66 /* Sub-interface add/del callback. */
  67 typedef clib_error_t *(vnet_subif_add_del_function_t)
  68   (struct vnet_main_t * vnm, u32 if_index,
  69    struct vnet_sw_interface_t * template, int is_add);
  70
  71 /* Interface set mac address callback. */
  72 typedef clib_error_t *(vnet_interface_set_mac_address_function_t)
  73   (struct vnet_hw_interface_t * hi,
  74    const u8 * old_address, const u8 * new_address);
  75
  76 /* Interface set rx mode callback. */
  77 typedef clib_error_t *(vnet_interface_set_rx_mode_function_t)
  78   (struct vnet_main_t * vnm, u32 if_index, u32 queue_id,
  79    vnet_hw_interface_rx_mode mode);
  80
  81 /* Interface set l2 mode callback. */
  82 typedef clib_error_t *(vnet_interface_set_l2_mode_function_t)
  83   (struct vnet_main_t * vnm, struct vnet_hw_interface_t * hi,
  84    i32 l2_if_adjust);
  85
  86 typedef enum
  87 {
  88   VNET_FLOW_DEV_OP_ADD_FLOW,
  89   VNET_FLOW_DEV_OP_DEL_FLOW,
  90   VNET_FLOW_DEV_OP_GET_COUNTER,
  91   VNET_FLOW_DEV_OP_RESET_COUNTER,
  92 } vnet_flow_dev_op_t;
  93
  94 /* Interface flow operations callback. */
  95 typedef int (vnet_flow_dev_ops_function_t) (struct vnet_main_t * vnm,
  96                                             vnet_flow_dev_op_t op,
  97                                             u32 hw_if_index, u32 index,
  98                                             uword * private_data);
  99
 100 typedef enum vnet_interface_function_priority_t_
 101 {
 102   VNET_ITF_FUNC_PRIORITY_LOW,
 103   VNET_ITF_FUNC_PRIORITY_HIGH,
 104 } vnet_interface_function_priority_t;
 105 #define VNET_ITF_FUNC_N_PRIO ((vnet_interface_function_priority_t)VNET_ITF_FUNC_PRIORITY_HIGH+1)
 106
 107 typedef struct _vnet_interface_function_list_elt
 108 {
 109   struct _vnet_interface_function_list_elt *next_interface_function;
 110   clib_error_t *(*fp) (struct vnet_main_t * vnm, u32 if_index, u32 flags);
 111 } _vnet_interface_function_list_elt_t;
 112
 113 #ifndef CLIB_MARCH_VARIANT
 114 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 115                                                                         \
 116 static void __vnet_interface_function_init_##tag##_##f (void)           \
 117     __attribute__((__constructor__)) ;                                  \
 118                                                                         \
 119 static void __vnet_interface_function_init_##tag##_##f (void)           \
 120 {                                                                       \
 121  vnet_main_t * vnm = vnet_get_main();                                   \
 122  static _vnet_interface_function_list_elt_t init_function;              \
 123  init_function.next_interface_function = vnm->tag##_functions[p];       \
 124  vnm->tag##_functions[p] = &init_function;                              \
 125  init_function.fp = (void *) &f;                                        \
 126 }                                                                       \
 127 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 128     __attribute__((__destructor__)) ;                                   \
 129                                                                         \
 130 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 131 {                                                                       \
 132  vnet_main_t * vnm = vnet_get_main();                                   \
 133  _vnet_interface_function_list_elt_t *next;                             \
 134  if (vnm->tag##_functions[p]->fp == f)                                  \
 135     {                                                                   \
 136       vnm->tag##_functions[p] =                                         \
 137         vnm->tag##_functions[p]->next_interface_function;               \
 138       return;                                                           \
 139     }                                                                   \
 140   next = vnm->tag##_functions[p];                                       \
 141   while (next->next_interface_function)                                 \
 142     {                                                                   \
 143       if (next->next_interface_function->fp == f)                       \
 144         {                                                               \
 145           next->next_interface_function =                               \
 146             next->next_interface_function->next_interface_function;     \
 147           return;                                                       \
 148         }                                                               \
 149       next = next->next_interface_function;                             \
 150     }                                                                   \
 151 }
 152 #else
 153 /* create unused pointer to silence compiler warnings and get whole
 154    function optimized out */
 155 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 156 static __clib_unused void * __clib_unused_##f = f;
 157 #endif
 158
 159 #define _VNET_INTERFACE_FUNCTION_DECL(f,tag)                            \
 160   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,VNET_ITF_FUNC_PRIORITY_LOW)
 161
 162 #define VNET_HW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 163   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_add_del)
 164 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(f)              \
 165   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_link_up_down)
 166 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION_PRIO(f,p)       \
 167   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,hw_interface_link_up_down,p)
 168 #define VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION(f)                \
 169   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_mtu_change)
 170 #define VNET_SW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 171   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_add_del)
 172 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(f)             \
 173   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_admin_up_down)
 174 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION_PRIO(f,p)      \
 175   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,sw_interface_admin_up_down, p)
 176
 177 /* A class of hardware interface devices. */
 178 typedef struct _vnet_device_class
 179 {
 180   /* Index into main vector. */
 181   u32 index;
 182
 183   /* Device name (e.g. "FOOBAR 1234a"). */
 184   char *name;
 185
 186   /* Function to call when hardware interface is added/deleted. */
 187   vnet_interface_function_t *interface_add_del_function;
 188
 189   /* Function to bring device administratively up/down. */
 190   vnet_interface_function_t *admin_up_down_function;
 191
 192   /* Function to call when sub-interface is added/deleted */
 193   vnet_subif_add_del_function_t *subif_add_del_function;
 194
 195   /* Function to call interface rx mode is changed */
 196   vnet_interface_set_rx_mode_function_t *rx_mode_change_function;
 197
 198   /* Function to call interface l2 mode is changed */
 199   vnet_interface_set_l2_mode_function_t *set_l2_mode_function;
 200
 201   /* Redistribute flag changes/existence of this interface class. */
 202   u32 redistribute;
 203
 204   /* Transmit function. */
 205   vlib_node_function_t *tx_function;
 206
 207   /* Transmit function candidate registration with priority */
 208   vlib_node_fn_registration_t *tx_fn_registrations;
 209
 210   /* Error strings indexed by error code for this node. */
 211   char **tx_function_error_strings;
 212
 213   /* Number of error codes used by this node. */
 214   u32 tx_function_n_errors;
 215
 216   /* Renumber device name [only!] support, a control-plane kludge */
 217   int (*name_renumber) (struct vnet_hw_interface_t * hi,
 218                         u32 new_dev_instance);
 219
 220   /* Interface flow offload operations */
 221   vnet_flow_dev_ops_function_t *flow_ops_function;
 222
 223   /* Format device instance as name. */
 224   format_function_t *format_device_name;
 225
 226   /* Parse function for device name. */
 227   unformat_function_t *unformat_device_name;
 228
 229   /* Format device verbosely for this class. */
 230   format_function_t *format_device;
 231
 232   /* Trace buffer format for TX function. */
 233   format_function_t *format_tx_trace;
 234
 235   /* Format flow offload entry */
 236   format_function_t *format_flow;
 237
 238   /* Function to clear hardware counters for device. */
 239   void (*clear_counters) (u32 dev_class_instance);
 240
 241     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 242                                            u32 hw_if_index,
 243                                            u32 hw_class_index);
 244
 245   /* Called when hardware class of an interface changes. */
 246   void (*hw_class_change) (struct vnet_main_t * vnm,
 247                            u32 hw_if_index, u32 new_hw_class_index);
 248
 249   /* Called to redirect traffic from a specific interface instance */
 250   void (*rx_redirect_to_node) (struct vnet_main_t * vnm,
 251                                u32 hw_if_index, u32 node_index);
 252
 253   /* Link-list of all device classes set up by constructors created below */
 254   struct _vnet_device_class *next_class_registration;
 255
 256   /* Function to set mac address. */
 257   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 258 } vnet_device_class_t;
 259
 260 #ifndef CLIB_MARCH_VARIANT
 261 #define VNET_DEVICE_CLASS(x,...)                                        \
 262   __VA_ARGS__ vnet_device_class_t x;                                    \
 263 static void __vnet_add_device_class_registration_##x (void)             \
 264     __attribute__((__constructor__)) ;                                  \
 265 static void __vnet_add_device_class_registration_##x (void)             \
 266 {                                                                       \
 267     vnet_main_t * vnm = vnet_get_main();                                \
 268     x.next_class_registration = vnm->device_class_registrations;        \
 269     vnm->device_class_registrations = &x;                               \
 270 }                                                                       \
 271 static void __vnet_rm_device_class_registration_##x (void)              \
 272     __attribute__((__destructor__)) ;                                   \
 273 static void __vnet_rm_device_class_registration_##x (void)              \
 274 {                                                                       \
 275     vnet_main_t * vnm = vnet_get_main();                                \
 276     VLIB_REMOVE_FROM_LINKED_LIST (vnm->device_class_registrations,      \
 277                                   &x, next_class_registration);         \
 278 }                                                                       \
 279 __VA_ARGS__ vnet_device_class_t x
 280 #else
 281 /* create unused pointer to silence compiler warnings and get whole
 282    function optimized out */
 283 #define VNET_DEVICE_CLASS(x,...)                                        \
 284 static __clib_unused vnet_device_class_t __clib_unused_##x
 285 #endif
 286
 287 #define VNET_DEVICE_CLASS_TX_FN(devclass)                               \
 288 uword CLIB_MARCH_SFX (devclass##_tx_fn)();                              \
 289 static vlib_node_fn_registration_t                                      \
 290   CLIB_MARCH_SFX(devclass##_tx_fn_registration) =                       \
 291   { .function = &CLIB_MARCH_SFX (devclass##_tx_fn), };                  \
 292                                                                         \
 293 static void __clib_constructor                                          \
 294 CLIB_MARCH_SFX (devclass##_tx_fn_multiarch_register) (void)             \
 295 {                                                                       \
 296   extern vnet_device_class_t devclass;                                  \
 297   vlib_node_fn_registration_t *r;                                       \
 298   r = &CLIB_MARCH_SFX (devclass##_tx_fn_registration);                  \
 299   r->priority = CLIB_MARCH_FN_PRIORITY();                               \
 300   r->next_registration = devclass.tx_fn_registrations;                  \
 301   devclass.tx_fn_registrations = r;                                     \
 302 }                                                                       \
 303 uword CLIB_CPU_OPTIMIZED CLIB_MARCH_SFX (devclass##_tx_fn)
 304
 305 /**
 306  * Link Type: A description of the protocol of packets on the link.
 307  * On an ethernet link this maps directly into the ethertype. On a GRE tunnel
 308  * it maps to the GRE-proto, etc for other lnk types.
 309  */
 310 typedef enum vnet_link_t_
 311 {
 312 #if CLIB_DEBUG > 0
 313   VNET_LINK_IP4 = 1,
 314 #else
 315   VNET_LINK_IP4 = 0,
 316 #endif
 317   VNET_LINK_IP6,
 318   VNET_LINK_MPLS,
 319   VNET_LINK_ETHERNET,
 320   VNET_LINK_ARP,
 321   VNET_LINK_NSH,
 322 } __attribute__ ((packed)) vnet_link_t;
 323
 324 #define VNET_LINKS {                   \
 325     [VNET_LINK_ETHERNET] = "ethernet", \
 326     [VNET_LINK_IP4] = "ipv4",          \
 327     [VNET_LINK_IP6] = "ipv6",          \
 328     [VNET_LINK_MPLS] = "mpls",         \
 329     [VNET_LINK_ARP] = "arp",           \
 330     [VNET_LINK_NSH] = "nsh",           \
 331 }
 332
 333 #define FOR_EACH_VNET_LINK(_link)    \
 334   for (_link = VNET_LINK_IP4;        \
 335        _link <= VNET_LINK_NSH;       \
 336        _link++)
 337
 338 /**
 339  * @brief Number of link types. Not part of the enum so it does not have to be included in
 340  * switch statements
 341  */
 342 #define VNET_LINK_NUM (VNET_LINK_NSH+1)
 343
 344 /**
 345  * @brief Convert a link to to an Ethertype
 346  */
 347 extern vnet_l3_packet_type_t vnet_link_to_l3_proto (vnet_link_t link);
 348
 349 /**
 350  * @brief Attributes assignable to a HW interface Class.
 351  */
 352 typedef enum vnet_hw_interface_class_flags_t_
 353 {
 354   /**
 355    * @brief a point 2 point interface
 356    */
 357   VNET_HW_INTERFACE_CLASS_FLAG_P2P = (1 << 0),
 358 } vnet_hw_interface_class_flags_t;
 359
 360 /* Layer-2 (e.g. Ethernet) interface class. */
 361 typedef struct _vnet_hw_interface_class
 362 {
 363   /* Index into main vector. */
 364   u32 index;
 365
 366   /* Class name (e.g. "Ethernet"). */
 367   char *name;
 368
 369   /* Flags */
 370   vnet_hw_interface_class_flags_t flags;
 371
 372   /* Function to call when hardware interface is added/deleted. */
 373   vnet_interface_function_t *interface_add_del_function;
 374
 375   /* Function to bring interface administratively up/down. */
 376   vnet_interface_function_t *admin_up_down_function;
 377
 378   /* Function to call when link state changes. */
 379   vnet_interface_function_t *link_up_down_function;
 380
 381   /* Function to call when link MAC changes. */
 382   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 383
 384   /* Format function to display interface name. */
 385   format_function_t *format_interface_name;
 386
 387   /* Format function to display interface address. */
 388   format_function_t *format_address;
 389
 390   /* Format packet header for this interface class. */
 391   format_function_t *format_header;
 392
 393   /* Format device verbosely for this class. */
 394   format_function_t *format_device;
 395
 396   /* Parser for hardware (e.g. ethernet) address. */
 397   unformat_function_t *unformat_hw_address;
 398
 399   /* Parser for packet header for e.g. rewrite string. */
 400   unformat_function_t *unformat_header;
 401
 402   /* Builds a rewrite string for the interface to the destination
 403    * for the payload/link type. */
 404   u8 *(*build_rewrite) (struct vnet_main_t * vnm,
 405                         u32 sw_if_index,
 406                         vnet_link_t link_type, const void *dst_hw_address);
 407
 408   /* Update an adjacency added by FIB (as opposed to via the
 409    * neighbour resolution protocol). */
 410   void (*update_adjacency) (struct vnet_main_t * vnm,
 411                             u32 sw_if_index, u32 adj_index);
 412
 413     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 414                                            u32 hw_if_index,
 415                                            u32 hw_class_index);
 416
 417   /* Called when hw interface class is changed and old hardware instance
 418      may want to be deleted. */
 419   void (*hw_class_change) (struct vnet_main_t * vnm, u32 hw_if_index,
 420                            u32 old_class_index, u32 new_class_index);
 421
 422   /* List of hw interface classes, built by constructors */
 423   struct _vnet_hw_interface_class *next_class_registration;
 424
 425 } vnet_hw_interface_class_t;
 426
 427 /**
 428  * @brief Return a complete, zero-length (aka dummy) rewrite
 429  */
 430 extern u8 *default_build_rewrite (struct vnet_main_t *vnm,
 431                                   u32 sw_if_index,
 432                                   vnet_link_t link_type,
 433                                   const void *dst_hw_address);
 434
 435 /**
 436  * @brief Default adjacency update function
 437  */
 438 extern void default_update_adjacency (struct vnet_main_t *vnm,
 439                                       u32 sw_if_index, u32 adj_index);
 440
 441 #define VNET_HW_INTERFACE_CLASS(x,...)                                  \
 442   __VA_ARGS__ vnet_hw_interface_class_t x;                              \
 443 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 444     __attribute__((__constructor__)) ;                                  \
 445 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 446 {                                                                       \
 447     vnet_main_t * vnm = vnet_get_main();                                \
 448     x.next_class_registration = vnm->hw_interface_class_registrations;  \
 449     vnm->hw_interface_class_registrations = &x;                         \
 450 }                                                                       \
 451 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 452     __attribute__((__destructor__)) ;                                   \
 453 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 454 {                                                                       \
 455     vnet_main_t * vnm = vnet_get_main();                                \
 456     VLIB_REMOVE_FROM_LINKED_LIST (vnm->hw_interface_class_registrations,\
 457                                   &x, next_class_registration);         \
 458 }                                                                       \
 459 __VA_ARGS__ vnet_hw_interface_class_t x
 460
 461 typedef enum vnet_hw_interface_flags_t_
 462 {
 463   VNET_HW_INTERFACE_FLAG_NONE,
 464   /* Hardware link state is up. */
 465   VNET_HW_INTERFACE_FLAG_LINK_UP = (1 << 0),
 466   /* Hardware duplex state */
 467   VNET_HW_INTERFACE_FLAG_HALF_DUPLEX = (1 << 1),
 468   VNET_HW_INTERFACE_FLAG_FULL_DUPLEX = (1 << 2),
 469
 470   /* rx mode flags */
 471   VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE = (1 << 16),
 472
 473   /* tx checksum offload */
 474   VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD = (1 << 17),
 475
 476   /* gso */
 477   VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO = (1 << 18),
 478 } vnet_hw_interface_flags_t;
 479
 480 #define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT 1
 481 #define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT  3
 482 #define VNET_HW_INTERFACE_FLAG_DUPLEX_MASK      \
 483   (VNET_HW_INTERFACE_FLAG_HALF_DUPLEX |         \
 484    VNET_HW_INTERFACE_FLAG_FULL_DUPLEX)
 485
 486 /* Hardware-interface.  This corresponds to a physical wire
 487    that packets flow over. */
 488 typedef struct vnet_hw_interface_t
 489 {
 490   /* Interface name. */
 491   u8 *name;
 492
 493   /* flags */
 494   vnet_hw_interface_flags_t flags;
 495
 496
 497   /* link speed in kbps */
 498   u32 link_speed;
 499
 500   /* Hardware address as vector.  Zero (e.g. zero-length vector) if no
 501      address for this class (e.g. PPP). */
 502   u8 *hw_address;
 503
 504   /* Interface is up as far as software is concerned. */
 505   /* NAME.{output,tx} nodes for this interface. */
 506   u32 output_node_index, tx_node_index;
 507
 508   /* (dev_class, dev_instance) uniquely identifies hw interface. */
 509   u32 dev_class_index;
 510   u32 dev_instance;
 511
 512   /* (hw_class, hw_instance) uniquely identifies hw interface. */
 513   u32 hw_class_index;
 514   u32 hw_instance;
 515
 516   /* Hardware index for this hardware interface. */
 517   u32 hw_if_index;
 518
 519   /* Software index for this hardware interface. */
 520   u32 sw_if_index;
 521
 522   /* Next index in interface-output node for this interface
 523      used by node function vnet_per_buffer_interface_output() */
 524   u32 output_node_next_index;
 525
 526   /* Maximum transmit rate for this interface in bits/sec. */
 527   f64 max_rate_bits_per_sec;
 528
 529   /* Smallest packet size supported by this interface. */
 530   u32 min_supported_packet_bytes;
 531
 532   /* Largest packet size supported by this interface. */
 533   u32 max_supported_packet_bytes;
 534
 535   /* Smallest packet size for this interface. */
 536   u32 min_packet_bytes;
 537
 538   /* Largest packet size for this interface. */
 539   u32 max_packet_bytes;
 540
 541   /* Hash table mapping sub interface id to sw_if_index. */
 542   uword *sub_interface_sw_if_index_by_id;
 543
 544   /* Count of number of L2 subinterfaces */
 545   u32 l2_if_count;
 546
 547   /* Bonded interface info -
 548      0       - not a bonded interface nor a slave
 549      ~0      - slave to a bonded interface
 550      others  - A bonded interface with a pointer to bitmap for all slaves */
 551   uword *bond_info;
 552 #define VNET_HW_INTERFACE_BOND_INFO_NONE ((uword *) 0)
 553 #define VNET_HW_INTERFACE_BOND_INFO_SLAVE ((uword *) ~0)
 554
 555   /* Input node */
 556   u32 input_node_index;
 557
 558   /* input node cpu index by queue */
 559   u32 *input_node_thread_index_by_queue;
 560
 561   /* vnet_hw_interface_rx_mode by queue */
 562   u8 *rx_mode_by_queue;
 563   vnet_hw_interface_rx_mode default_rx_mode;
 564
 565   /* device input device_and_queue runtime index */
 566   uword *dq_runtime_index_by_queue;
 567
 568   /* numa node that hardware device connects to */
 569   u8 numa_node;
 570
 571   u8 padding[3];
 572 } vnet_hw_interface_t;
 573
 574 extern vnet_device_class_t vnet_local_interface_device_class;
 575
 576 typedef enum
 577 {
 578   /* A hw interface. */
 579   VNET_SW_INTERFACE_TYPE_HARDWARE,
 580
 581   /* A sub-interface. */
 582   VNET_SW_INTERFACE_TYPE_SUB,
 583   VNET_SW_INTERFACE_TYPE_P2P,
 584   VNET_SW_INTERFACE_TYPE_PIPE,
 585 } vnet_sw_interface_type_t;
 586
 587 typedef struct
 588 {
 589   /*
 590    * Subinterface ID. A number 0-N to uniquely identify
 591    * this subinterface under the main (parent?) interface
 592    */
 593   u32 id;
 594
 595   /* Classification data. Used to associate packet header with subinterface. */
 596   struct
 597   {
 598     u16 outer_vlan_id;
 599     u16 inner_vlan_id;
 600     union
 601     {
 602       u16 raw_flags;
 603       struct
 604       {
 605         u16 no_tags:1;
 606         u16 one_tag:1;
 607         u16 two_tags:1;
 608         u16 dot1ad:1;           /* 0 = dot1q, 1=dot1ad */
 609         u16 exact_match:1;
 610         u16 default_sub:1;
 611         u16 outer_vlan_id_any:1;
 612         u16 inner_vlan_id_any:1;
 613       } flags;
 614     };
 615   } eth;
 616 } vnet_sub_interface_t;
 617
 618 typedef struct
 619 {
 620   /*
 621    * Subinterface ID. A number 0-N to uniquely identify
 622    * this subinterface under the main interface
 623    */
 624   u32 id;
 625   u32 pool_index;
 626   u8 client_mac[6];
 627 } vnet_p2p_sub_interface_t;
 628
 629 typedef enum
 630 {
 631   /* THe BVI interface */
 632   VNET_FLOOD_CLASS_BVI,
 633   /* Always flood */
 634   VNET_FLOOD_CLASS_NORMAL,
 635   VNET_FLOOD_CLASS_TUNNEL_MASTER,
 636   /* Does not flood when tunnel master is in the same L2 BD */
 637   VNET_FLOOD_CLASS_TUNNEL_NORMAL,
 638   /* Never flood to this type */
 639   VNET_FLOOD_CLASS_NO_FLOOD,
 640 } vnet_flood_class_t;
 641
 642 /* Per protocol MTU */
 643 typedef enum
 644 {
 645   VNET_MTU_L3,                  /* Default payload MTU (without L2 headers) */
 646   VNET_MTU_IP4,                 /* Per-protocol MTUs overriding default */
 647   VNET_MTU_IP6,
 648   VNET_MTU_MPLS,
 649   VNET_N_MTU
 650 } vnet_mtu_t;
 651
 652 extern vnet_mtu_t vnet_link_to_mtu (vnet_link_t link);
 653
 654 typedef enum vnet_sw_interface_flags_t_
 655 {
 656   VNET_SW_INTERFACE_FLAG_NONE = 0,
 657   /* Interface is "up" meaning administratively up.
 658      Up in the sense of link state being up is maintained by hardware interface. */
 659   VNET_SW_INTERFACE_FLAG_ADMIN_UP = (1 << 0),
 660
 661   /* Interface is disabled for forwarding: punt all traffic to slow-path. */
 662   VNET_SW_INTERFACE_FLAG_PUNT = (1 << 1),
 663
 664   __VNET_SW_INTERFACE_FLAG_UNSUED = (1 << 2),
 665
 666   VNET_SW_INTERFACE_FLAG_UNNUMBERED = (1 << 3),
 667
 668   VNET_SW_INTERFACE_FLAG_BOND_SLAVE = (1 << 4),
 669
 670   /* Interface does not appear in CLI/API */
 671   VNET_SW_INTERFACE_FLAG_HIDDEN = (1 << 5),
 672
 673   /* Interface in ERROR state */
 674   VNET_SW_INTERFACE_FLAG_ERROR = (1 << 6),
 675
 676   /* Interface has IP configured directed broadcast */
 677   VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST = (1 << 7),
 678
 679 } __attribute__ ((packed)) vnet_sw_interface_flags_t;
 680
 681 /* Software-interface.  This corresponds to a Ethernet VLAN, ATM vc, a
 682    tunnel, etc.  Configuration (e.g. IP address) gets attached to
 683    software interface. */
 684 typedef struct
 685 {
 686   vnet_sw_interface_type_t type:16;
 687
 688   vnet_sw_interface_flags_t flags;
 689
 690   /* Index for this interface. */
 691   u32 sw_if_index;
 692
 693   /* Software interface index of super-interface;
 694      equal to sw_if_index if this interface is not a
 695      sub-interface. */
 696   u32 sup_sw_if_index;
 697
 698   /* this swif is unnumbered, use addresses on unnumbered_sw_if_index... */
 699   u32 unnumbered_sw_if_index;
 700
 701   /* VNET_SW_INTERFACE_TYPE_HARDWARE. */
 702   u32 hw_if_index;
 703
 704   /* MTU for network layer (not including L2 headers) */
 705   u32 mtu[VNET_N_MTU];
 706
 707   /* VNET_SW_INTERFACE_TYPE_SUB. */
 708   vnet_sub_interface_t sub;
 709
 710   /* VNET_SW_INTERFACE_TYPE_P2P. */
 711   vnet_p2p_sub_interface_t p2p;
 712
 713   vnet_flood_class_t flood_class;
 714 } vnet_sw_interface_t;
 715
 716 typedef enum
 717 {
 718   /* Simple counters. */
 719   VNET_INTERFACE_COUNTER_DROP = 0,
 720   VNET_INTERFACE_COUNTER_PUNT = 1,
 721   VNET_INTERFACE_COUNTER_IP4 = 2,
 722   VNET_INTERFACE_COUNTER_IP6 = 3,
 723   VNET_INTERFACE_COUNTER_RX_NO_BUF = 4,
 724   VNET_INTERFACE_COUNTER_RX_MISS = 5,
 725   VNET_INTERFACE_COUNTER_RX_ERROR = 6,
 726   VNET_INTERFACE_COUNTER_TX_ERROR = 7,
 727   VNET_INTERFACE_COUNTER_MPLS = 8,
 728   VNET_N_SIMPLE_INTERFACE_COUNTER = 9,
 729   /* Combined counters. */
 730   VNET_INTERFACE_COUNTER_RX = 0,
 731   VNET_INTERFACE_COUNTER_RX_UNICAST = 1,
 732   VNET_INTERFACE_COUNTER_RX_MULTICAST = 2,
 733   VNET_INTERFACE_COUNTER_RX_BROADCAST = 3,
 734   VNET_INTERFACE_COUNTER_TX = 4,
 735   VNET_INTERFACE_COUNTER_TX_UNICAST = 5,
 736   VNET_INTERFACE_COUNTER_TX_MULTICAST = 6,
 737   VNET_INTERFACE_COUNTER_TX_BROADCAST = 7,
 738   VNET_N_COMBINED_INTERFACE_COUNTER = 8,
 739 } vnet_interface_counter_type_t;
 740
 741 #define foreach_rx_combined_interface_counter(_x)               \
 742   for (_x = VNET_INTERFACE_COUNTER_RX;                          \
 743        _x <= VNET_INTERFACE_COUNTER_RX_BROADCAST;               \
 744        _x++)
 745
 746 #define foreach_tx_combined_interface_counter(_x)               \
 747   for (_x = VNET_INTERFACE_COUNTER_TX;                          \
 748        _x <= VNET_INTERFACE_COUNTER_TX_BROADCAST;               \
 749        _x++)
 750
 751 #define foreach_simple_interface_counter_name   \
 752   _(DROP, drops, if)                            \
 753   _(PUNT, punt, if)                             \
 754   _(IP4, ip4, if)                               \
 755   _(IP6, ip6, if)                               \
 756   _(RX_NO_BUF, rx-no-buf, if)                   \
 757   _(RX_MISS, rx-miss, if)                       \
 758   _(RX_ERROR, rx-error, if)                     \
 759   _(TX_ERROR, tx-error, if)         \
 760   _(MPLS, mpls, if)
 761
 762 #define foreach_combined_interface_counter_name \
 763   _(RX, rx, if)                                 \
 764   _(RX_UNICAST, rx-unicast, if)                 \
 765   _(RX_MULTICAST, rx-multicast, if)             \
 766   _(RX_BROADCAST, rx-broadcast, if)             \
 767   _(TX, tx, if)                                 \
 768   _(TX_UNICAST, tx-unicast, if)                 \
 769   _(TX_MULTICAST, tx-multicast, if)             \
 770   _(TX_BROADCAST, tx-broadcast, if)
 771
 772 typedef enum
 773 {
 774   COLLECT_SIMPLE_STATS = 0,
 775   COLLECT_DETAILED_STATS = 1,
 776 } vnet_interface_stats_collection_mode_e;
 777
 778 extern int collect_detailed_interface_stats_flag;
 779
 780 static inline int
 781 collect_detailed_interface_stats (void)
 782 {
 783   return collect_detailed_interface_stats_flag;
 784 }
 785
 786 void collect_detailed_interface_stats_flag_set (void);
 787 void collect_detailed_interface_stats_flag_clear (void);
 788
 789
 790 typedef struct
 791 {
 792   u32 output_node_index;
 793   u32 tx_node_index;
 794 } vnet_hw_interface_nodes_t;
 795
 796 typedef struct
 797 {
 798   u32 *split_buffers;
 799   u32 padding[14];
 800 } vnet_interface_per_thread_data_t;
 801
 802 typedef struct
 803 {
 804   /* Hardware interfaces. */
 805   vnet_hw_interface_t *hw_interfaces;
 806
 807   /* Hash table mapping HW interface name to index. */
 808   uword *hw_interface_by_name;
 809
 810   /* Vectors if hardware interface classes and device classes. */
 811   vnet_hw_interface_class_t *hw_interface_classes;
 812   vnet_device_class_t *device_classes;
 813
 814   /* Hash table mapping name to hw interface/device class. */
 815   uword *hw_interface_class_by_name;
 816   uword *device_class_by_name;
 817
 818   /* Software interfaces. */
 819   vnet_sw_interface_t *sw_interfaces;
 820
 821   /* Hash table mapping sub intfc sw_if_index by sup sw_if_index and sub id */
 822   uword *sw_if_index_by_sup_and_sub;
 823
 824   /* Software interface counters both simple and combined
 825      packet and byte counters. */
 826   volatile u32 *sw_if_counter_lock;
 827   vlib_simple_counter_main_t *sw_if_counters;
 828   vlib_combined_counter_main_t *combined_sw_if_counters;
 829
 830   vnet_hw_interface_nodes_t *deleted_hw_interface_nodes;
 831
 832   /* pcap drop tracing */
 833   int drop_pcap_enable;
 834   pcap_main_t pcap_main;
 835   u8 *pcap_filename;
 836   u32 pcap_sw_if_index;
 837   u32 pcap_pkts_to_capture;
 838   uword *pcap_drop_filter_hash;
 839
 840   /* per-thread data */
 841   vnet_interface_per_thread_data_t *per_thread_data;
 842
 843   /* enable GSO processing in packet path if this count is > 0 */
 844   u32 gso_interface_count;
 845
 846   /* feature_arc_index */
 847   u8 output_feature_arc_index;
 848 } vnet_interface_main_t;
 849
 850 static inline void
 851 vnet_interface_counter_lock (vnet_interface_main_t * im)
 852 {
 853   if (im->sw_if_counter_lock)
 854     while (clib_atomic_test_and_set (im->sw_if_counter_lock))
 855       /* zzzz */ ;
 856 }
 857
 858 static inline void
 859 vnet_interface_counter_unlock (vnet_interface_main_t * im)
 860 {
 861   if (im->sw_if_counter_lock)
 862     clib_atomic_release (im->sw_if_counter_lock);
 863 }
 864
 865 void vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add);
 866
 867 int vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance);
 868
 869 uword vnet_interface_output_node (vlib_main_t * vm,
 870                                   vlib_node_runtime_t * node,
 871                                   vlib_frame_t * frame);
 872
 873 #endif /* included_vnet_interface_h */
 874
 875 /*
 876  * fd.io coding-style-patch-verification: ON
 877  *
 878  * Local Variables:
 879  * eval: (c-set-style "gnu")
 880  * End:
 881  */