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 #include <vppinfra/lock.h>
  47
  48 struct vnet_main_t;
  49 struct vnet_hw_interface_t;
  50 struct vnet_sw_interface_t;
  51 union ip46_address_t_;
  52
  53 typedef enum
  54 {
  55   VNET_HW_INTERFACE_RX_MODE_UNKNOWN,
  56   VNET_HW_INTERFACE_RX_MODE_POLLING,
  57   VNET_HW_INTERFACE_RX_MODE_INTERRUPT,
  58   VNET_HW_INTERFACE_RX_MODE_ADAPTIVE,
  59   VNET_HW_INTERFACE_RX_MODE_DEFAULT,
  60   VNET_HW_INTERFACE_NUM_RX_MODES,
  61 } vnet_hw_interface_rx_mode;
  62
  63 /* Interface up/down callback. */
  64 typedef clib_error_t *(vnet_interface_function_t)
  65   (struct vnet_main_t * vnm, u32 if_index, u32 flags);
  66
  67 /* Sub-interface add/del callback. */
  68 typedef clib_error_t *(vnet_subif_add_del_function_t)
  69   (struct vnet_main_t * vnm, u32 if_index,
  70    struct vnet_sw_interface_t * template, int is_add);
  71
  72 /* Interface set mac address callback. */
  73 typedef clib_error_t *(vnet_interface_set_mac_address_function_t)
  74   (struct vnet_hw_interface_t * hi,
  75    const u8 * old_address, const u8 * new_address);
  76
  77 /* Interface set rx mode callback. */
  78 typedef clib_error_t *(vnet_interface_set_rx_mode_function_t)
  79   (struct vnet_main_t * vnm, u32 if_index, u32 queue_id,
  80    vnet_hw_interface_rx_mode mode);
  81
  82 /* Interface set l2 mode callback. */
  83 typedef clib_error_t *(vnet_interface_set_l2_mode_function_t)
  84   (struct vnet_main_t * vnm, struct vnet_hw_interface_t * hi,
  85    i32 l2_if_adjust);
  86
  87 typedef enum
  88 {
  89   VNET_FLOW_DEV_OP_ADD_FLOW,
  90   VNET_FLOW_DEV_OP_DEL_FLOW,
  91   VNET_FLOW_DEV_OP_GET_COUNTER,
  92   VNET_FLOW_DEV_OP_RESET_COUNTER,
  93 } vnet_flow_dev_op_t;
  94
  95 /* Interface flow operations callback. */
  96 typedef int (vnet_flow_dev_ops_function_t) (struct vnet_main_t * vnm,
  97                                             vnet_flow_dev_op_t op,
  98                                             u32 hw_if_index, u32 index,
  99                                             uword * private_data);
 100
 101 typedef enum vnet_interface_function_priority_t_
 102 {
 103   VNET_ITF_FUNC_PRIORITY_LOW,
 104   VNET_ITF_FUNC_PRIORITY_HIGH,
 105 } vnet_interface_function_priority_t;
 106 #define VNET_ITF_FUNC_N_PRIO ((vnet_interface_function_priority_t)VNET_ITF_FUNC_PRIORITY_HIGH+1)
 107
 108 typedef struct _vnet_interface_function_list_elt
 109 {
 110   struct _vnet_interface_function_list_elt *next_interface_function;
 111   clib_error_t *(*fp) (struct vnet_main_t * vnm, u32 if_index, u32 flags);
 112 } _vnet_interface_function_list_elt_t;
 113
 114 #ifndef CLIB_MARCH_VARIANT
 115 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 116                                                                         \
 117 static void __vnet_interface_function_init_##tag##_##f (void)           \
 118     __attribute__((__constructor__)) ;                                  \
 119                                                                         \
 120 static void __vnet_interface_function_init_##tag##_##f (void)           \
 121 {                                                                       \
 122  vnet_main_t * vnm = vnet_get_main();                                   \
 123  static _vnet_interface_function_list_elt_t init_function;              \
 124  init_function.next_interface_function = vnm->tag##_functions[p];       \
 125  vnm->tag##_functions[p] = &init_function;                              \
 126  init_function.fp = (void *) &f;                                        \
 127 }                                                                       \
 128 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 129     __attribute__((__destructor__)) ;                                   \
 130                                                                         \
 131 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 132 {                                                                       \
 133  vnet_main_t * vnm = vnet_get_main();                                   \
 134  _vnet_interface_function_list_elt_t *next;                             \
 135  if (vnm->tag##_functions[p]->fp == f)                                  \
 136     {                                                                   \
 137       vnm->tag##_functions[p] =                                         \
 138         vnm->tag##_functions[p]->next_interface_function;               \
 139       return;                                                           \
 140     }                                                                   \
 141   next = vnm->tag##_functions[p];                                       \
 142   while (next->next_interface_function)                                 \
 143     {                                                                   \
 144       if (next->next_interface_function->fp == f)                       \
 145         {                                                               \
 146           next->next_interface_function =                               \
 147             next->next_interface_function->next_interface_function;     \
 148           return;                                                       \
 149         }                                                               \
 150       next = next->next_interface_function;                             \
 151     }                                                                   \
 152 }
 153 #else
 154 /* create unused pointer to silence compiler warnings and get whole
 155    function optimized out */
 156 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 157 static __clib_unused void * __clib_unused_##f = f;
 158 #endif
 159
 160 #define _VNET_INTERFACE_FUNCTION_DECL(f,tag)                            \
 161   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,VNET_ITF_FUNC_PRIORITY_LOW)
 162
 163 #define VNET_HW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 164   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_add_del)
 165 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(f)              \
 166   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_link_up_down)
 167 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION_PRIO(f,p)       \
 168   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,hw_interface_link_up_down,p)
 169 #define VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION(f)                \
 170   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_mtu_change)
 171 #define VNET_SW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 172   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_add_del)
 173 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(f)             \
 174   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_admin_up_down)
 175 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION_PRIO(f,p)      \
 176   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,sw_interface_admin_up_down, p)
 177
 178 /**
 179  * Tunnel description parameters
 180  */
 181 typedef int (*vnet_dev_class_ip_tunnel_desc_t) (u32 sw_if_index,
 182                                                 union ip46_address_t_ * src,
 183                                                 union ip46_address_t_ * dst,
 184                                                 u8 * is_l2);
 185
 186 /* A class of hardware interface devices. */
 187 typedef struct _vnet_device_class
 188 {
 189   /* Index into main vector. */
 190   u32 index;
 191
 192   /* Device name (e.g. "FOOBAR 1234a"). */
 193   char *name;
 194
 195   /* Function to call when hardware interface is added/deleted. */
 196   vnet_interface_function_t *interface_add_del_function;
 197
 198   /* Function to bring device administratively up/down. */
 199   vnet_interface_function_t *admin_up_down_function;
 200
 201   /* Function to call when sub-interface is added/deleted */
 202   vnet_subif_add_del_function_t *subif_add_del_function;
 203
 204   /* Function to call interface rx mode is changed */
 205   vnet_interface_set_rx_mode_function_t *rx_mode_change_function;
 206
 207   /* Function to call interface l2 mode is changed */
 208   vnet_interface_set_l2_mode_function_t *set_l2_mode_function;
 209
 210   /* Redistribute flag changes/existence of this interface class. */
 211   u32 redistribute;
 212
 213   /* Transmit function. */
 214   vlib_node_function_t *tx_function;
 215
 216   /* Transmit function candidate registration with priority */
 217   vlib_node_fn_registration_t *tx_fn_registrations;
 218
 219   /* Error strings indexed by error code for this node. */
 220   char **tx_function_error_strings;
 221
 222   /* Number of error codes used by this node. */
 223   u32 tx_function_n_errors;
 224
 225   /* Renumber device name [only!] support, a control-plane kludge */
 226   int (*name_renumber) (struct vnet_hw_interface_t * hi,
 227                         u32 new_dev_instance);
 228
 229   /* Interface flow offload operations */
 230   vnet_flow_dev_ops_function_t *flow_ops_function;
 231
 232   /* Format device instance as name. */
 233   format_function_t *format_device_name;
 234
 235   /* Parse function for device name. */
 236   unformat_function_t *unformat_device_name;
 237
 238   /* Format device verbosely for this class. */
 239   format_function_t *format_device;
 240
 241   /* Trace buffer format for TX function. */
 242   format_function_t *format_tx_trace;
 243
 244   /* Format flow offload entry */
 245   format_function_t *format_flow;
 246
 247   vnet_dev_class_ip_tunnel_desc_t ip_tun_desc;
 248
 249   /* Function to clear hardware counters for device. */
 250   void (*clear_counters) (u32 dev_class_instance);
 251
 252     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 253                                            u32 hw_if_index,
 254                                            u32 hw_class_index);
 255
 256   /* Called when hardware class of an interface changes. */
 257   void (*hw_class_change) (struct vnet_main_t * vnm,
 258                            u32 hw_if_index, u32 new_hw_class_index);
 259
 260   /* Called to redirect traffic from a specific interface instance */
 261   void (*rx_redirect_to_node) (struct vnet_main_t * vnm,
 262                                u32 hw_if_index, u32 node_index);
 263
 264   /* Link-list of all device classes set up by constructors created below */
 265   struct _vnet_device_class *next_class_registration;
 266
 267   /* Function to set mac address. */
 268   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 269 } vnet_device_class_t;
 270
 271 #ifndef CLIB_MARCH_VARIANT
 272 #define VNET_DEVICE_CLASS(x,...)                                        \
 273   __VA_ARGS__ vnet_device_class_t x;                                    \
 274 static void __vnet_add_device_class_registration_##x (void)             \
 275     __attribute__((__constructor__)) ;                                  \
 276 static void __vnet_add_device_class_registration_##x (void)             \
 277 {                                                                       \
 278     vnet_main_t * vnm = vnet_get_main();                                \
 279     x.next_class_registration = vnm->device_class_registrations;        \
 280     vnm->device_class_registrations = &x;                               \
 281 }                                                                       \
 282 static void __vnet_rm_device_class_registration_##x (void)              \
 283     __attribute__((__destructor__)) ;                                   \
 284 static void __vnet_rm_device_class_registration_##x (void)              \
 285 {                                                                       \
 286     vnet_main_t * vnm = vnet_get_main();                                \
 287     VLIB_REMOVE_FROM_LINKED_LIST (vnm->device_class_registrations,      \
 288                                   &x, next_class_registration);         \
 289 }                                                                       \
 290 __VA_ARGS__ vnet_device_class_t x
 291 #else
 292 /* create unused pointer to silence compiler warnings and get whole
 293    function optimized out */
 294 #define VNET_DEVICE_CLASS(x,...)                                        \
 295 static __clib_unused vnet_device_class_t __clib_unused_##x
 296 #endif
 297
 298 #define VNET_DEVICE_CLASS_TX_FN(devclass)                               \
 299 uword CLIB_MARCH_SFX (devclass##_tx_fn)();                              \
 300 static vlib_node_fn_registration_t                                      \
 301   CLIB_MARCH_SFX(devclass##_tx_fn_registration) =                       \
 302   { .function = &CLIB_MARCH_SFX (devclass##_tx_fn), };                  \
 303                                                                         \
 304 static void __clib_constructor                                          \
 305 CLIB_MARCH_SFX (devclass##_tx_fn_multiarch_register) (void)             \
 306 {                                                                       \
 307   extern vnet_device_class_t devclass;                                  \
 308   vlib_node_fn_registration_t *r;                                       \
 309   r = &CLIB_MARCH_SFX (devclass##_tx_fn_registration);                  \
 310   r->priority = CLIB_MARCH_FN_PRIORITY();                               \
 311   r->next_registration = devclass.tx_fn_registrations;                  \
 312   devclass.tx_fn_registrations = r;                                     \
 313 }                                                                       \
 314 uword CLIB_CPU_OPTIMIZED CLIB_MARCH_SFX (devclass##_tx_fn)
 315
 316 /**
 317  * Link Type: A description of the protocol of packets on the link.
 318  * On an ethernet link this maps directly into the ethertype. On a GRE tunnel
 319  * it maps to the GRE-proto, etc for other lnk types.
 320  */
 321 typedef enum vnet_link_t_
 322 {
 323 #if CLIB_DEBUG > 0
 324   VNET_LINK_IP4 = 1,
 325 #else
 326   VNET_LINK_IP4 = 0,
 327 #endif
 328   VNET_LINK_IP6,
 329   VNET_LINK_MPLS,
 330   VNET_LINK_ETHERNET,
 331   VNET_LINK_ARP,
 332   VNET_LINK_NSH,
 333 } __attribute__ ((packed)) vnet_link_t;
 334
 335 #define VNET_LINKS {                   \
 336     [VNET_LINK_ETHERNET] = "ethernet", \
 337     [VNET_LINK_IP4] = "ipv4",          \
 338     [VNET_LINK_IP6] = "ipv6",          \
 339     [VNET_LINK_MPLS] = "mpls",         \
 340     [VNET_LINK_ARP] = "arp",           \
 341     [VNET_LINK_NSH] = "nsh",           \
 342 }
 343
 344 #define FOR_EACH_VNET_LINK(_link)    \
 345   for (_link = VNET_LINK_IP4;        \
 346        _link <= VNET_LINK_NSH;       \
 347        _link++)
 348
 349 /**
 350  * @brief Number of link types. Not part of the enum so it does not have to be included in
 351  * switch statements
 352  */
 353 #define VNET_LINK_NUM (VNET_LINK_NSH+1)
 354
 355 /**
 356  * @brief Convert a link to to an Ethertype
 357  */
 358 extern vnet_l3_packet_type_t vnet_link_to_l3_proto (vnet_link_t link);
 359
 360 /**
 361  * @brief Attributes assignable to a HW interface Class.
 362  */
 363 typedef enum vnet_hw_interface_class_flags_t_
 364 {
 365   /**
 366    * @brief a point 2 point interface
 367    */
 368   VNET_HW_INTERFACE_CLASS_FLAG_P2P = (1 << 0),
 369 } vnet_hw_interface_class_flags_t;
 370
 371 /* Layer-2 (e.g. Ethernet) interface class. */
 372 typedef struct _vnet_hw_interface_class
 373 {
 374   /* Index into main vector. */
 375   u32 index;
 376
 377   /* Class name (e.g. "Ethernet"). */
 378   char *name;
 379
 380   /* Flags */
 381   vnet_hw_interface_class_flags_t flags;
 382
 383   /* Function to call when hardware interface is added/deleted. */
 384   vnet_interface_function_t *interface_add_del_function;
 385
 386   /* Function to bring interface administratively up/down. */
 387   vnet_interface_function_t *admin_up_down_function;
 388
 389   /* Function to call when link state changes. */
 390   vnet_interface_function_t *link_up_down_function;
 391
 392   /* Function to call when link MAC changes. */
 393   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 394
 395   /* Format function to display interface name. */
 396   format_function_t *format_interface_name;
 397
 398   /* Format function to display interface address. */
 399   format_function_t *format_address;
 400
 401   /* Format packet header for this interface class. */
 402   format_function_t *format_header;
 403
 404   /* Format device verbosely for this class. */
 405   format_function_t *format_device;
 406
 407   /* Parser for hardware (e.g. ethernet) address. */
 408   unformat_function_t *unformat_hw_address;
 409
 410   /* Parser for packet header for e.g. rewrite string. */
 411   unformat_function_t *unformat_header;
 412
 413   /* Builds a rewrite string for the interface to the destination
 414    * for the payload/link type. */
 415   u8 *(*build_rewrite) (struct vnet_main_t * vnm,
 416                         u32 sw_if_index,
 417                         vnet_link_t link_type, const void *dst_hw_address);
 418
 419   /* Update an adjacency added by FIB (as opposed to via the
 420    * neighbour resolution protocol). */
 421   void (*update_adjacency) (struct vnet_main_t * vnm,
 422                             u32 sw_if_index, u32 adj_index);
 423
 424     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 425                                            u32 hw_if_index,
 426                                            u32 hw_class_index);
 427
 428   /* Called when hw interface class is changed and old hardware instance
 429      may want to be deleted. */
 430   void (*hw_class_change) (struct vnet_main_t * vnm, u32 hw_if_index,
 431                            u32 old_class_index, u32 new_class_index);
 432
 433   /* List of hw interface classes, built by constructors */
 434   struct _vnet_hw_interface_class *next_class_registration;
 435
 436 } vnet_hw_interface_class_t;
 437
 438 /**
 439  * @brief Return a complete, zero-length (aka dummy) rewrite
 440  */
 441 extern u8 *default_build_rewrite (struct vnet_main_t *vnm,
 442                                   u32 sw_if_index,
 443                                   vnet_link_t link_type,
 444                                   const void *dst_hw_address);
 445
 446 /**
 447  * @brief Default adjacency update function
 448  */
 449 extern void default_update_adjacency (struct vnet_main_t *vnm,
 450                                       u32 sw_if_index, u32 adj_index);
 451
 452 #define VNET_HW_INTERFACE_CLASS(x,...)                                  \
 453   __VA_ARGS__ vnet_hw_interface_class_t x;                              \
 454 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 455     __attribute__((__constructor__)) ;                                  \
 456 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 457 {                                                                       \
 458     vnet_main_t * vnm = vnet_get_main();                                \
 459     x.next_class_registration = vnm->hw_interface_class_registrations;  \
 460     vnm->hw_interface_class_registrations = &x;                         \
 461 }                                                                       \
 462 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 463     __attribute__((__destructor__)) ;                                   \
 464 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 465 {                                                                       \
 466     vnet_main_t * vnm = vnet_get_main();                                \
 467     VLIB_REMOVE_FROM_LINKED_LIST (vnm->hw_interface_class_registrations,\
 468                                   &x, next_class_registration);         \
 469 }                                                                       \
 470 __VA_ARGS__ vnet_hw_interface_class_t x
 471
 472 typedef enum vnet_hw_interface_flags_t_
 473 {
 474   VNET_HW_INTERFACE_FLAG_NONE,
 475   /* Hardware link state is up. */
 476   VNET_HW_INTERFACE_FLAG_LINK_UP = (1 << 0),
 477   /* Hardware duplex state */
 478   VNET_HW_INTERFACE_FLAG_HALF_DUPLEX = (1 << 1),
 479   VNET_HW_INTERFACE_FLAG_FULL_DUPLEX = (1 << 2),
 480
 481   /* rx mode flags */
 482   VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE = (1 << 16),
 483
 484   /* tx checksum offload */
 485   VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD = (1 << 17),
 486
 487   /* gso */
 488   VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO = (1 << 18),
 489 } vnet_hw_interface_flags_t;
 490
 491 #define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT 1
 492 #define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT  3
 493 #define VNET_HW_INTERFACE_FLAG_DUPLEX_MASK      \
 494   (VNET_HW_INTERFACE_FLAG_HALF_DUPLEX |         \
 495    VNET_HW_INTERFACE_FLAG_FULL_DUPLEX)
 496
 497 /* Hardware-interface.  This corresponds to a physical wire
 498    that packets flow over. */
 499 typedef struct vnet_hw_interface_t
 500 {
 501   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 502   /* Interface name. */
 503   u8 *name;
 504
 505   /* flags */
 506   vnet_hw_interface_flags_t flags;
 507
 508
 509   /* link speed in kbps */
 510   u32 link_speed;
 511
 512   /* Hardware address as vector.  Zero (e.g. zero-length vector) if no
 513      address for this class (e.g. PPP). */
 514   u8 *hw_address;
 515
 516   /* Interface is up as far as software is concerned. */
 517   /* NAME.{output,tx} nodes for this interface. */
 518   u32 output_node_index, tx_node_index;
 519
 520   /* (dev_class, dev_instance) uniquely identifies hw interface. */
 521   u32 dev_class_index;
 522   u32 dev_instance;
 523
 524   /* (hw_class, hw_instance) uniquely identifies hw interface. */
 525   u32 hw_class_index;
 526   u32 hw_instance;
 527
 528   /* Hardware index for this hardware interface. */
 529   u32 hw_if_index;
 530
 531   /* Software index for this hardware interface. */
 532   u32 sw_if_index;
 533
 534   /* Next index in interface-output node for this interface
 535      used by node function vnet_per_buffer_interface_output() */
 536   u32 output_node_next_index;
 537
 538   /* Maximum transmit rate for this interface in bits/sec. */
 539   f64 max_rate_bits_per_sec;
 540
 541   /* Smallest packet size supported by this interface. */
 542   u32 min_supported_packet_bytes;
 543
 544   /* Largest packet size supported by this interface. */
 545   u32 max_supported_packet_bytes;
 546
 547   /* Smallest packet size for this interface. */
 548   u32 min_packet_bytes;
 549
 550   /* Largest packet size for this interface. */
 551   u32 max_packet_bytes;
 552
 553   /* Hash table mapping sub interface id to sw_if_index. */
 554   uword *sub_interface_sw_if_index_by_id;
 555
 556   /* Count of number of L2 subinterfaces */
 557   u32 l2_if_count;
 558
 559   /* Bonded interface info -
 560      0       - not a bonded interface nor a slave
 561      ~0      - slave to a bonded interface
 562      others  - A bonded interface with a pointer to bitmap for all slaves */
 563   uword *bond_info;
 564 #define VNET_HW_INTERFACE_BOND_INFO_NONE ((uword *) 0)
 565 #define VNET_HW_INTERFACE_BOND_INFO_SLAVE ((uword *) ~0)
 566
 567   /* Input node */
 568   u32 input_node_index;
 569
 570   /* input node cpu index by queue */
 571   u32 *input_node_thread_index_by_queue;
 572
 573   /* vnet_hw_interface_rx_mode by queue */
 574   u8 *rx_mode_by_queue;
 575   vnet_hw_interface_rx_mode default_rx_mode;
 576
 577   /* device input device_and_queue runtime index */
 578   uword *dq_runtime_index_by_queue;
 579
 580   /* numa node that hardware device connects to */
 581   u8 numa_node;
 582
 583   /* trace */
 584   i32 n_trace;
 585
 586   u32 trace_classify_table_index;
 587 } vnet_hw_interface_t;
 588
 589 extern vnet_device_class_t vnet_local_interface_device_class;
 590
 591 typedef enum
 592 {
 593   /* A hw interface. */
 594   VNET_SW_INTERFACE_TYPE_HARDWARE,
 595
 596   /* A sub-interface. */
 597   VNET_SW_INTERFACE_TYPE_SUB,
 598   VNET_SW_INTERFACE_TYPE_P2P,
 599   VNET_SW_INTERFACE_TYPE_PIPE,
 600 } vnet_sw_interface_type_t;
 601
 602 typedef struct
 603 {
 604   /*
 605    * Subinterface ID. A number 0-N to uniquely identify
 606    * this subinterface under the main (parent?) interface
 607    */
 608   u32 id;
 609
 610   /* Classification data. Used to associate packet header with subinterface. */
 611   struct
 612   {
 613     u16 outer_vlan_id;
 614     u16 inner_vlan_id;
 615     union
 616     {
 617       u16 raw_flags;
 618       struct
 619       {
 620         u16 no_tags:1;
 621         u16 one_tag:1;
 622         u16 two_tags:1;
 623         u16 dot1ad:1;           /* 0 = dot1q, 1=dot1ad */
 624         u16 exact_match:1;
 625         u16 default_sub:1;
 626         u16 outer_vlan_id_any:1;
 627         u16 inner_vlan_id_any:1;
 628       } flags;
 629     };
 630   } eth;
 631 } vnet_sub_interface_t;
 632
 633 typedef struct
 634 {
 635   /*
 636    * Subinterface ID. A number 0-N to uniquely identify
 637    * this subinterface under the main interface
 638    */
 639   u32 id;
 640   u32 pool_index;
 641   u8 client_mac[6];
 642 } vnet_p2p_sub_interface_t;
 643
 644 typedef enum
 645 {
 646   /* THe BVI interface */
 647   VNET_FLOOD_CLASS_BVI,
 648   /* Always flood */
 649   VNET_FLOOD_CLASS_NORMAL,
 650   VNET_FLOOD_CLASS_TUNNEL_MASTER,
 651   /* Does not flood when tunnel master is in the same L2 BD */
 652   VNET_FLOOD_CLASS_TUNNEL_NORMAL,
 653   /* Never flood to this type */
 654   VNET_FLOOD_CLASS_NO_FLOOD,
 655 } vnet_flood_class_t;
 656
 657 /* Per protocol MTU */
 658 typedef enum
 659 {
 660   VNET_MTU_L3,                  /* Default payload MTU (without L2 headers) */
 661   VNET_MTU_IP4,                 /* Per-protocol MTUs overriding default */
 662   VNET_MTU_IP6,
 663   VNET_MTU_MPLS,
 664   VNET_N_MTU
 665 } vnet_mtu_t;
 666
 667 extern vnet_mtu_t vnet_link_to_mtu (vnet_link_t link);
 668
 669 typedef enum vnet_sw_interface_flags_t_
 670 {
 671   VNET_SW_INTERFACE_FLAG_NONE = 0,
 672   /* Interface is "up" meaning administratively up.
 673      Up in the sense of link state being up is maintained by hardware interface. */
 674   VNET_SW_INTERFACE_FLAG_ADMIN_UP = (1 << 0),
 675
 676   /* Interface is disabled for forwarding: punt all traffic to slow-path. */
 677   VNET_SW_INTERFACE_FLAG_PUNT = (1 << 1),
 678
 679   __VNET_SW_INTERFACE_FLAG_UNSUED = (1 << 2),
 680
 681   VNET_SW_INTERFACE_FLAG_UNNUMBERED = (1 << 3),
 682
 683   __VNET_SW_INTERFACE_FLAG_UNUSED2 = (1 << 4),
 684
 685   /* Interface does not appear in CLI/API */
 686   VNET_SW_INTERFACE_FLAG_HIDDEN = (1 << 5),
 687
 688   /* Interface in ERROR state */
 689   VNET_SW_INTERFACE_FLAG_ERROR = (1 << 6),
 690
 691   /* Interface has IP configured directed broadcast */
 692   VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST = (1 << 7),
 693
 694 } __attribute__ ((packed)) vnet_sw_interface_flags_t;
 695
 696 /* Software-interface.  This corresponds to a Ethernet VLAN, ATM vc, a
 697    tunnel, etc.  Configuration (e.g. IP address) gets attached to
 698    software interface. */
 699 typedef struct
 700 {
 701   vnet_sw_interface_type_t type:16;
 702
 703   vnet_sw_interface_flags_t flags;
 704
 705   /* Index for this interface. */
 706   u32 sw_if_index;
 707
 708   /* Software interface index of super-interface;
 709      equal to sw_if_index if this interface is not a
 710      sub-interface. */
 711   u32 sup_sw_if_index;
 712
 713   /* this swif is unnumbered, use addresses on unnumbered_sw_if_index... */
 714   u32 unnumbered_sw_if_index;
 715
 716   /* VNET_SW_INTERFACE_TYPE_HARDWARE. */
 717   u32 hw_if_index;
 718
 719   /* MTU for network layer (not including L2 headers) */
 720   u32 mtu[VNET_N_MTU];
 721
 722   /* VNET_SW_INTERFACE_TYPE_SUB. */
 723   vnet_sub_interface_t sub;
 724
 725   /* VNET_SW_INTERFACE_TYPE_P2P. */
 726   vnet_p2p_sub_interface_t p2p;
 727
 728   vnet_flood_class_t flood_class;
 729 } vnet_sw_interface_t;
 730
 731 typedef enum
 732 {
 733   /* Simple counters. */
 734   VNET_INTERFACE_COUNTER_DROP = 0,
 735   VNET_INTERFACE_COUNTER_PUNT = 1,
 736   VNET_INTERFACE_COUNTER_IP4 = 2,
 737   VNET_INTERFACE_COUNTER_IP6 = 3,
 738   VNET_INTERFACE_COUNTER_RX_NO_BUF = 4,
 739   VNET_INTERFACE_COUNTER_RX_MISS = 5,
 740   VNET_INTERFACE_COUNTER_RX_ERROR = 6,
 741   VNET_INTERFACE_COUNTER_TX_ERROR = 7,
 742   VNET_INTERFACE_COUNTER_MPLS = 8,
 743   VNET_N_SIMPLE_INTERFACE_COUNTER = 9,
 744   /* Combined counters. */
 745   VNET_INTERFACE_COUNTER_RX = 0,
 746   VNET_INTERFACE_COUNTER_RX_UNICAST = 1,
 747   VNET_INTERFACE_COUNTER_RX_MULTICAST = 2,
 748   VNET_INTERFACE_COUNTER_RX_BROADCAST = 3,
 749   VNET_INTERFACE_COUNTER_TX = 4,
 750   VNET_INTERFACE_COUNTER_TX_UNICAST = 5,
 751   VNET_INTERFACE_COUNTER_TX_MULTICAST = 6,
 752   VNET_INTERFACE_COUNTER_TX_BROADCAST = 7,
 753   VNET_N_COMBINED_INTERFACE_COUNTER = 8,
 754 } vnet_interface_counter_type_t;
 755
 756 #define foreach_rx_combined_interface_counter(_x)               \
 757   for (_x = VNET_INTERFACE_COUNTER_RX;                          \
 758        _x <= VNET_INTERFACE_COUNTER_RX_BROADCAST;               \
 759        _x++)
 760
 761 #define foreach_tx_combined_interface_counter(_x)               \
 762   for (_x = VNET_INTERFACE_COUNTER_TX;                          \
 763        _x <= VNET_INTERFACE_COUNTER_TX_BROADCAST;               \
 764        _x++)
 765
 766 #define foreach_simple_interface_counter_name   \
 767   _(DROP, drops, if)                            \
 768   _(PUNT, punt, if)                             \
 769   _(IP4, ip4, if)                               \
 770   _(IP6, ip6, if)                               \
 771   _(RX_NO_BUF, rx-no-buf, if)                   \
 772   _(RX_MISS, rx-miss, if)                       \
 773   _(RX_ERROR, rx-error, if)                     \
 774   _(TX_ERROR, tx-error, if)         \
 775   _(MPLS, mpls, if)
 776
 777 #define foreach_combined_interface_counter_name \
 778   _(RX, rx, if)                                 \
 779   _(RX_UNICAST, rx-unicast, if)                 \
 780   _(RX_MULTICAST, rx-multicast, if)             \
 781   _(RX_BROADCAST, rx-broadcast, if)             \
 782   _(TX, tx, if)                                 \
 783   _(TX_UNICAST, tx-unicast, if)                 \
 784   _(TX_MULTICAST, tx-multicast, if)             \
 785   _(TX_BROADCAST, tx-broadcast, if)
 786
 787 typedef enum
 788 {
 789   COLLECT_SIMPLE_STATS = 0,
 790   COLLECT_DETAILED_STATS = 1,
 791 } vnet_interface_stats_collection_mode_e;
 792
 793 extern int collect_detailed_interface_stats_flag;
 794
 795 static inline int
 796 collect_detailed_interface_stats (void)
 797 {
 798   return collect_detailed_interface_stats_flag;
 799 }
 800
 801 void collect_detailed_interface_stats_flag_set (void);
 802 void collect_detailed_interface_stats_flag_clear (void);
 803
 804
 805 typedef struct
 806 {
 807   u32 output_node_index;
 808   u32 tx_node_index;
 809 } vnet_hw_interface_nodes_t;
 810
 811 typedef struct
 812 {
 813   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 814   u32 *split_buffers;
 815 } vnet_interface_per_thread_data_t;
 816
 817 typedef u8 *(*vnet_buffer_opquae_formatter_t) (const vlib_buffer_t * b,
 818                                                u8 * s);
 819
 820 typedef struct
 821 {
 822   /* Hardware interfaces. */
 823   vnet_hw_interface_t *hw_interfaces;
 824
 825   /* Hash table mapping HW interface name to index. */
 826   uword *hw_interface_by_name;
 827
 828   /* Vectors if hardware interface classes and device classes. */
 829   vnet_hw_interface_class_t *hw_interface_classes;
 830   vnet_device_class_t *device_classes;
 831
 832   /* Hash table mapping name to hw interface/device class. */
 833   uword *hw_interface_class_by_name;
 834   uword *device_class_by_name;
 835
 836   /* Software interfaces. */
 837   vnet_sw_interface_t *sw_interfaces;
 838
 839   /* Hash table mapping sub intfc sw_if_index by sup sw_if_index and sub id */
 840   uword *sw_if_index_by_sup_and_sub;
 841
 842   /* Software interface counters both simple and combined
 843      packet and byte counters. */
 844   clib_spinlock_t sw_if_counter_lock;
 845   vlib_simple_counter_main_t *sw_if_counters;
 846   vlib_combined_counter_main_t *combined_sw_if_counters;
 847
 848   vnet_hw_interface_nodes_t *deleted_hw_interface_nodes;
 849
 850   /*
 851    * pcap drop tracing
 852    * Only the drop filter hash lives here. See ../src/vlib/main.h for
 853    * the rest of the variables.
 854    */
 855   uword *pcap_drop_filter_hash;
 856
 857   /* Buffer metadata format helper functions */
 858   vnet_buffer_opquae_formatter_t *buffer_opaque_format_helpers;
 859   vnet_buffer_opquae_formatter_t *buffer_opaque2_format_helpers;
 860
 861   /* per-thread data */
 862   vnet_interface_per_thread_data_t *per_thread_data;
 863
 864   /* enable GSO processing in packet path if this count is > 0 */
 865   u32 gso_interface_count;
 866
 867   /* feature_arc_index */
 868   u8 output_feature_arc_index;
 869 } vnet_interface_main_t;
 870
 871 static inline void
 872 vnet_interface_counter_lock (vnet_interface_main_t * im)
 873 {
 874   if (im->sw_if_counter_lock)
 875     clib_spinlock_lock (&im->sw_if_counter_lock);
 876 }
 877
 878 static inline void
 879 vnet_interface_counter_unlock (vnet_interface_main_t * im)
 880 {
 881   if (im->sw_if_counter_lock)
 882     clib_spinlock_unlock (&im->sw_if_counter_lock);
 883 }
 884
 885 void vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add);
 886
 887 int vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance);
 888
 889 uword vnet_interface_output_node (vlib_main_t * vm,
 890                                   vlib_node_runtime_t * node,
 891                                   vlib_frame_t * frame);
 892
 893 void vnet_register_format_buffer_opaque_helper
 894   (vnet_buffer_opquae_formatter_t fn);
 895
 896 void vnet_register_format_buffer_opaque2_helper
 897   (vnet_buffer_opquae_formatter_t fn);
 898
 899 typedef struct
 900 {
 901   u8 *filename;
 902   int enable;
 903   int status;
 904   u32 packets_to_capture;
 905   u32 max_bytes_per_pkt;
 906   u8 rx_enable;
 907   u8 tx_enable;
 908   u8 drop_enable;
 909   u32 sw_if_index;
 910   int filter;
 911 } vnet_pcap_dispatch_trace_args_t;
 912
 913 int vnet_pcap_dispatch_trace_configure (vnet_pcap_dispatch_trace_args_t *);
 914
 915 #endif /* included_vnet_interface_h */
 916
 917 /*
 918  * fd.io coding-style-patch-verification: ON
 919  *
 920  * Local Variables:
 921  * eval: (c-set-style "gnu")
 922  * End:
 923  */