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 #include <vnet/hash/hash.h>
  48
  49 struct vnet_main_t;
  50 struct vnet_hw_interface_t;
  51 struct vnet_sw_interface_t;
  52 union ip46_address_t_;
  53
  54 typedef enum
  55 {
  56   VNET_HW_IF_RX_MODE_UNKNOWN,
  57   VNET_HW_IF_RX_MODE_POLLING,
  58   VNET_HW_IF_RX_MODE_INTERRUPT,
  59   VNET_HW_IF_RX_MODE_ADAPTIVE,
  60   VNET_HW_IF_RX_MODE_DEFAULT,
  61   VNET_HW_IF_NUM_RX_MODES,
  62 } vnet_hw_if_rx_mode;
  63
  64 /* Interface up/down callback. */
  65 typedef clib_error_t *(vnet_interface_function_t)
  66   (struct vnet_main_t * vnm, u32 if_index, u32 flags);
  67
  68 /* Sub-interface add/del callback. */
  69 typedef clib_error_t *(vnet_subif_add_del_function_t)
  70   (struct vnet_main_t * vnm, u32 if_index,
  71    struct vnet_sw_interface_t * template, int is_add);
  72
  73 /* Interface set mtu callback. */
  74 typedef clib_error_t *(vnet_interface_set_max_frame_size_function_t) (
  75   struct vnet_main_t *vnm, struct vnet_hw_interface_t *hi, u32 mtu);
  76
  77 /* Interface set mac address callback. */
  78 typedef clib_error_t *(vnet_interface_set_mac_address_function_t)
  79   (struct vnet_hw_interface_t * hi,
  80    const u8 * old_address, const u8 * new_address);
  81
  82 /* Interface add/del additional mac address callback */
  83 typedef clib_error_t *(vnet_interface_add_del_mac_address_function_t)
  84   (struct vnet_hw_interface_t * hi, const u8 * address, u8 is_add);
  85
  86 /* Interface set rx mode callback. */
  87 typedef clib_error_t *(vnet_interface_set_rx_mode_function_t)
  88   (struct vnet_main_t * vnm, u32 if_index, u32 queue_id,
  89    vnet_hw_if_rx_mode mode);
  90
  91 /* Interface set l2 mode callback. */
  92 typedef clib_error_t *(vnet_interface_set_l2_mode_function_t)
  93   (struct vnet_main_t * vnm, struct vnet_hw_interface_t * hi,
  94    i32 l2_if_adjust);
  95
  96 /* Interface to set rss queues of the interface */
  97 typedef clib_error_t *(vnet_interface_rss_queues_set_t)
  98   (struct vnet_main_t * vnm, struct vnet_hw_interface_t * hi,
  99    clib_bitmap_t * bitmap);
 100
 101 typedef enum
 102 {
 103   VNET_FLOW_DEV_OP_ADD_FLOW,
 104   VNET_FLOW_DEV_OP_DEL_FLOW,
 105   VNET_FLOW_DEV_OP_GET_COUNTER,
 106   VNET_FLOW_DEV_OP_RESET_COUNTER,
 107 } vnet_flow_dev_op_t;
 108
 109 /* Interface flow operations callback. */
 110 typedef int (vnet_flow_dev_ops_function_t) (struct vnet_main_t * vnm,
 111                                             vnet_flow_dev_op_t op,
 112                                             u32 hw_if_index, u32 index,
 113                                             uword * private_data);
 114
 115 typedef enum vnet_interface_function_priority_t_
 116 {
 117   VNET_ITF_FUNC_PRIORITY_LOW,
 118   VNET_ITF_FUNC_PRIORITY_HIGH,
 119 } vnet_interface_function_priority_t;
 120 #define VNET_ITF_FUNC_N_PRIO ((vnet_interface_function_priority_t)VNET_ITF_FUNC_PRIORITY_HIGH+1)
 121
 122 typedef struct _vnet_interface_function_list_elt
 123 {
 124   struct _vnet_interface_function_list_elt *next_interface_function;
 125   clib_error_t *(*fp) (struct vnet_main_t * vnm, u32 if_index, u32 flags);
 126 } _vnet_interface_function_list_elt_t;
 127
 128 #ifndef CLIB_MARCH_VARIANT
 129 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 130                                                                         \
 131 static void __vnet_interface_function_init_##tag##_##f (void)           \
 132     __attribute__((__constructor__)) ;                                  \
 133                                                                         \
 134 static void __vnet_interface_function_init_##tag##_##f (void)           \
 135 {                                                                       \
 136  vnet_main_t * vnm = vnet_get_main();                                   \
 137  static _vnet_interface_function_list_elt_t init_function;              \
 138  init_function.next_interface_function = vnm->tag##_functions[p];       \
 139  vnm->tag##_functions[p] = &init_function;                              \
 140  init_function.fp = (void *) &f;                                        \
 141 }                                                                       \
 142 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 143     __attribute__((__destructor__)) ;                                   \
 144                                                                         \
 145 static void __vnet_interface_function_deinit_##tag##_##f (void)         \
 146 {                                                                       \
 147  vnet_main_t * vnm = vnet_get_main();                                   \
 148  _vnet_interface_function_list_elt_t *next;                             \
 149  if (vnm->tag##_functions[p]->fp == f)                                  \
 150     {                                                                   \
 151       vnm->tag##_functions[p] =                                         \
 152         vnm->tag##_functions[p]->next_interface_function;               \
 153       return;                                                           \
 154     }                                                                   \
 155   next = vnm->tag##_functions[p];                                       \
 156   while (next->next_interface_function)                                 \
 157     {                                                                   \
 158       if (next->next_interface_function->fp == f)                       \
 159         {                                                               \
 160           next->next_interface_function =                               \
 161             next->next_interface_function->next_interface_function;     \
 162           return;                                                       \
 163         }                                                               \
 164       next = next->next_interface_function;                             \
 165     }                                                                   \
 166 }
 167 #else
 168 /* create unused pointer to silence compiler warnings and get whole
 169    function optimized out */
 170 #define _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,p)                    \
 171 static __clib_unused void * __clib_unused_##f = f;
 172 #endif
 173
 174 #define _VNET_INTERFACE_FUNCTION_DECL(f,tag)                            \
 175   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,tag,VNET_ITF_FUNC_PRIORITY_LOW)
 176
 177 #define VNET_HW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 178   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_add_del)
 179 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(f)              \
 180   _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_link_up_down)
 181 #define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION_PRIO(f,p)       \
 182   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,hw_interface_link_up_down,p)
 183 #define VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION(f)                \
 184   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_mtu_change)
 185 #define VNET_SW_INTERFACE_ADD_DEL_FUNCTION(f)                   \
 186   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_add_del)
 187 #define VNET_SW_INTERFACE_ADD_DEL_FUNCTION_PRIO(f,p)            \
 188   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,sw_interface_add_del,p)
 189 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(f)             \
 190   _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_admin_up_down)
 191 #define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION_PRIO(f,p)      \
 192   _VNET_INTERFACE_FUNCTION_DECL_PRIO(f,sw_interface_admin_up_down, p)
 193
 194 /**
 195  * Tunnel description parameters
 196  */
 197 typedef int (*vnet_dev_class_ip_tunnel_desc_t) (u32 sw_if_index,
 198                                                 union ip46_address_t_ * src,
 199                                                 union ip46_address_t_ * dst,
 200                                                 u8 * is_l2);
 201
 202 /* A class of hardware interface devices. */
 203 typedef struct _vnet_device_class
 204 {
 205   /* Index into main vector. */
 206   u32 index;
 207
 208   /* Device name (e.g. "FOOBAR 1234a"). */
 209   char *name;
 210
 211   /* Function to call when hardware interface is added/deleted. */
 212   vnet_interface_function_t *interface_add_del_function;
 213
 214   /* Function to bring device administratively up/down. */
 215   vnet_interface_function_t *admin_up_down_function;
 216
 217   /* Function to call when sub-interface is added/deleted */
 218   vnet_subif_add_del_function_t *subif_add_del_function;
 219
 220   /* Function to call interface rx mode is changed */
 221   vnet_interface_set_rx_mode_function_t *rx_mode_change_function;
 222
 223   /* Function to call interface l2 mode is changed */
 224   vnet_interface_set_l2_mode_function_t *set_l2_mode_function;
 225
 226   /* Redistribute flag changes/existence of this interface class. */
 227   u32 redistribute;
 228
 229   /* Transmit function. */
 230   vlib_node_function_t *tx_function;
 231
 232   /* Transmit function candidate registration with priority */
 233   vlib_node_fn_registration_t *tx_fn_registrations;
 234
 235   /* Error strings indexed by error code for this node. */
 236   char **tx_function_error_strings;
 237   vlib_error_desc_t *tx_function_error_counters;
 238
 239   /* Number of error codes used by this node. */
 240   u32 tx_function_n_errors;
 241
 242   /* Renumber device name [only!] support, a control-plane kludge */
 243   int (*name_renumber) (struct vnet_hw_interface_t * hi,
 244                         u32 new_dev_instance);
 245
 246   /* Interface flow offload operations */
 247   vnet_flow_dev_ops_function_t *flow_ops_function;
 248
 249   /* Format device instance as name. */
 250   format_function_t *format_device_name;
 251
 252   /* Parse function for device name. */
 253   unformat_function_t *unformat_device_name;
 254
 255   /* Format device verbosely for this class. */
 256   format_function_t *format_device;
 257
 258   /* Trace buffer format for TX function. */
 259   format_function_t *format_tx_trace;
 260
 261   /* Format flow offload entry */
 262   format_function_t *format_flow;
 263
 264   vnet_dev_class_ip_tunnel_desc_t ip_tun_desc;
 265
 266   /* Function to clear hardware counters for device. */
 267   void (*clear_counters) (u32 dev_class_instance);
 268
 269     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 270                                            u32 hw_if_index,
 271                                            u32 hw_class_index);
 272
 273   /* Called when hardware class of an interface changes. */
 274   void (*hw_class_change) (struct vnet_main_t * vnm,
 275                            u32 hw_if_index, u32 new_hw_class_index);
 276
 277   /* Called to redirect traffic from a specific interface instance */
 278   void (*rx_redirect_to_node) (struct vnet_main_t * vnm,
 279                                u32 hw_if_index, u32 node_index);
 280
 281   /* Link-list of all device classes set up by constructors created below */
 282   struct _vnet_device_class *next_class_registration;
 283
 284   /* Function to set mac address. */
 285   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 286
 287   /* Function to add/delete additional MAC addresses */
 288   vnet_interface_add_del_mac_address_function_t *mac_addr_add_del_function;
 289
 290   /* Interface to set rss queues of the interface */
 291   vnet_interface_rss_queues_set_t *set_rss_queues_function;
 292
 293 } vnet_device_class_t;
 294
 295 #ifndef CLIB_MARCH_VARIANT
 296 #define VNET_DEVICE_CLASS(x,...)                                        \
 297   __VA_ARGS__ vnet_device_class_t x;                                    \
 298 static void __vnet_add_device_class_registration_##x (void)             \
 299     __attribute__((__constructor__)) ;                                  \
 300 static void __vnet_add_device_class_registration_##x (void)             \
 301 {                                                                       \
 302     vnet_main_t * vnm = vnet_get_main();                                \
 303     x.next_class_registration = vnm->device_class_registrations;        \
 304     vnm->device_class_registrations = &x;                               \
 305 }                                                                       \
 306 static void __vnet_rm_device_class_registration_##x (void)              \
 307     __attribute__((__destructor__)) ;                                   \
 308 static void __vnet_rm_device_class_registration_##x (void)              \
 309 {                                                                       \
 310     vnet_main_t * vnm = vnet_get_main();                                \
 311     VLIB_REMOVE_FROM_LINKED_LIST (vnm->device_class_registrations,      \
 312                                   &x, next_class_registration);         \
 313 }                                                                       \
 314 __VA_ARGS__ vnet_device_class_t x
 315 #else
 316 /* create unused pointer to silence compiler warnings and get whole
 317    function optimized out */
 318 #define VNET_DEVICE_CLASS(x,...)                                        \
 319 static __clib_unused vnet_device_class_t __clib_unused_##x
 320 #endif
 321
 322 #define VNET_DEVICE_CLASS_TX_FN(devclass)                                     \
 323   uword CLIB_MARCH_SFX (devclass##_tx_fn) ();                                 \
 324   static vlib_node_fn_registration_t CLIB_MARCH_SFX (                         \
 325     devclass##_tx_fn_registration) = {                                        \
 326     .function = &CLIB_MARCH_SFX (devclass##_tx_fn),                           \
 327   };                                                                          \
 328                                                                               \
 329   static void __clib_constructor CLIB_MARCH_SFX (                             \
 330     devclass##_tx_fn_multiarch_register) (void)                               \
 331   {                                                                           \
 332     extern vnet_device_class_t devclass;                                      \
 333     vlib_node_fn_registration_t *r;                                           \
 334     r = &CLIB_MARCH_SFX (devclass##_tx_fn_registration);                      \
 335     r->march_variant = CLIB_MARCH_SFX (CLIB_MARCH_VARIANT_TYPE);              \
 336     r->next_registration = devclass.tx_fn_registrations;                      \
 337     devclass.tx_fn_registrations = r;                                         \
 338   }                                                                           \
 339   uword CLIB_MARCH_SFX (devclass##_tx_fn)
 340
 341 /**
 342  * Link Type: A description of the protocol of packets on the link.
 343  * On an ethernet link this maps directly into the ethertype. On a GRE tunnel
 344  * it maps to the GRE-proto, etc for other lnk types.
 345  */
 346 typedef enum vnet_link_t_
 347 {
 348 #if CLIB_DEBUG > 0
 349   VNET_LINK_IP4 = 1,
 350 #else
 351   VNET_LINK_IP4 = 0,
 352 #endif
 353   VNET_LINK_IP6,
 354   VNET_LINK_MPLS,
 355   VNET_LINK_ETHERNET,
 356   VNET_LINK_ARP,
 357   VNET_LINK_NSH,
 358 } __attribute__ ((packed)) vnet_link_t;
 359
 360 #define VNET_LINKS {                   \
 361     [VNET_LINK_ETHERNET] = "ethernet", \
 362     [VNET_LINK_IP4] = "ipv4",          \
 363     [VNET_LINK_IP6] = "ipv6",          \
 364     [VNET_LINK_MPLS] = "mpls",         \
 365     [VNET_LINK_ARP] = "arp",           \
 366     [VNET_LINK_NSH] = "nsh",           \
 367 }
 368
 369 #define FOR_EACH_VNET_LINK(_link)    \
 370   for (_link = VNET_LINK_IP4;        \
 371        _link <= VNET_LINK_NSH;       \
 372        _link++)
 373
 374 #define FOR_EACH_VNET_IP_LINK(_link)    \
 375   for (_link = VNET_LINK_IP4;           \
 376        _link <= VNET_LINK_IP6;          \
 377        _link++)
 378
 379 /**
 380  * @brief Number of link types. Not part of the enum so it does not have to be
 381  * included in switch statements
 382  */
 383 #define VNET_LINK_NUM (VNET_LINK_NSH+1)
 384 #define VNET_N_LINKS VNET_LINK_NUM
 385
 386 /**
 387  * @brief Convert a link to to an Ethertype
 388  */
 389 extern vnet_l3_packet_type_t vnet_link_to_l3_proto (vnet_link_t link);
 390
 391 /**
 392  * @brief Attributes assignable to a HW interface Class.
 393  */
 394 typedef enum vnet_hw_interface_class_flags_t_
 395 {
 396   /**
 397    * @brief a point 2 point interface
 398    */
 399   VNET_HW_INTERFACE_CLASS_FLAG_P2P = (1 << 0),
 400   /**
 401    * @brief a non-broadcast multiple access interface
 402    */
 403   VNET_HW_INTERFACE_CLASS_FLAG_NBMA = (1 << 1),
 404 } vnet_hw_interface_class_flags_t;
 405
 406 /* Layer-2 (e.g. Ethernet) interface class. */
 407 typedef struct _vnet_hw_interface_class
 408 {
 409   /* Index into main vector. */
 410   u32 index;
 411
 412   /* Class name (e.g. "Ethernet"). */
 413   char *name;
 414
 415   /* Flags */
 416   vnet_hw_interface_class_flags_t flags;
 417
 418   /* tx hash type for interfaces of this hw class */
 419   vnet_hash_fn_type_t tx_hash_fn_type;
 420
 421   /* Function to call when hardware interface is added/deleted. */
 422   vnet_interface_function_t *interface_add_del_function;
 423
 424   /* Function to bring interface administratively up/down. */
 425   vnet_interface_function_t *admin_up_down_function;
 426
 427   /* Function to call when link state changes. */
 428   vnet_interface_function_t *link_up_down_function;
 429
 430   /* Function to call when link MAC changes. */
 431   vnet_interface_set_mac_address_function_t *mac_addr_change_function;
 432
 433   /* Function to add/delete additional MAC addresses */
 434   vnet_interface_add_del_mac_address_function_t *mac_addr_add_del_function;
 435
 436   /* Function to set max frame size. */
 437   vnet_interface_set_max_frame_size_function_t *set_max_frame_size;
 438
 439   /* Format function to display interface name. */
 440   format_function_t *format_interface_name;
 441
 442   /* Format function to display interface address. */
 443   format_function_t *format_address;
 444
 445   /* Format packet header for this interface class. */
 446   format_function_t *format_header;
 447
 448   /* Format device verbosely for this class. */
 449   format_function_t *format_device;
 450
 451   /* Parser for hardware (e.g. ethernet) address. */
 452   unformat_function_t *unformat_hw_address;
 453
 454   /* Parser for packet header for e.g. rewrite string. */
 455   unformat_function_t *unformat_header;
 456
 457   /* Builds a rewrite string for the interface to the destination
 458    * for the payload/link type. */
 459   u8 *(*build_rewrite) (struct vnet_main_t * vnm,
 460                         u32 sw_if_index,
 461                         vnet_link_t link_type, const void *dst_hw_address);
 462
 463   /* Update an adjacency added by FIB (as opposed to via the
 464    * neighbour resolution protocol). */
 465   void (*update_adjacency) (struct vnet_main_t * vnm,
 466                             u32 sw_if_index, u32 adj_index);
 467
 468     uword (*is_valid_class_for_interface) (struct vnet_main_t * vnm,
 469                                            u32 hw_if_index,
 470                                            u32 hw_class_index);
 471
 472   /* Called when hw interface class is changed and old hardware instance
 473      may want to be deleted. */
 474   void (*hw_class_change) (struct vnet_main_t * vnm, u32 hw_if_index,
 475                            u32 old_class_index, u32 new_class_index);
 476
 477   /* List of hw interface classes, built by constructors */
 478   struct _vnet_hw_interface_class *next_class_registration;
 479
 480 } vnet_hw_interface_class_t;
 481
 482 /**
 483  * @brief Return a complete, zero-length (aka placeholder) rewrite
 484  */
 485 extern u8 *default_build_rewrite (struct vnet_main_t *vnm,
 486                                   u32 sw_if_index,
 487                                   vnet_link_t link_type,
 488                                   const void *dst_hw_address);
 489
 490 /**
 491  * @brief Default adjacency update function
 492  */
 493 extern void default_update_adjacency (struct vnet_main_t *vnm,
 494                                       u32 sw_if_index, u32 adj_index);
 495
 496 #define VNET_HW_INTERFACE_CLASS(x,...)                                  \
 497   __VA_ARGS__ vnet_hw_interface_class_t x;                              \
 498 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 499     __attribute__((__constructor__)) ;                                  \
 500 static void __vnet_add_hw_interface_class_registration_##x (void)       \
 501 {                                                                       \
 502     vnet_main_t * vnm = vnet_get_main();                                \
 503     x.next_class_registration = vnm->hw_interface_class_registrations;  \
 504     vnm->hw_interface_class_registrations = &x;                         \
 505 }                                                                       \
 506 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 507     __attribute__((__destructor__)) ;                                   \
 508 static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 509 {                                                                       \
 510     vnet_main_t * vnm = vnet_get_main();                                \
 511     VLIB_REMOVE_FROM_LINKED_LIST (vnm->hw_interface_class_registrations,\
 512                                   &x, next_class_registration);         \
 513 }                                                                       \
 514 __VA_ARGS__ vnet_hw_interface_class_t x
 515
 516 typedef enum vnet_hw_interface_flags_t_
 517 {
 518   VNET_HW_INTERFACE_FLAG_NONE,
 519   /* Hardware link state is up. */
 520   VNET_HW_INTERFACE_FLAG_LINK_UP = (1 << 0),
 521   /* Hardware duplex state */
 522   VNET_HW_INTERFACE_FLAG_HALF_DUPLEX = (1 << 1),
 523   VNET_HW_INTERFACE_FLAG_FULL_DUPLEX = (1 << 2),
 524
 525   /* non-broadcast multiple access */
 526   VNET_HW_INTERFACE_FLAG_NBMA = (1 << 19),
 527 } vnet_hw_interface_flags_t;
 528
 529 #define foreach_vnet_hw_if_caps                                               \
 530   _ (0, TX_IP4_CKSUM, "ip4-csum-tx")                                          \
 531   _ (1, TX_TCP_CKSUM, "tcp-csum-tx")                                          \
 532   _ (2, TX_UDP_CKSUM, "udp-csum-tx")                                          \
 533   _ (3, TX_IP4_OUTER_CKSUM, "outer-ip4-csum-tx")                              \
 534   _ (4, TX_UDP_OUTER_CKSUM, "outer-udp-csum-tx")                              \
 535   _ (5, RX_IP4_CKSUM, "ip4-csum-rx")                                          \
 536   _ (6, RX_TCP_CKSUM, "tcp-csum-rx")                                          \
 537   _ (7, RX_UDP_CKSUM, "udp-csum-rx")                                          \
 538   _ (8, RX_IP4_OUTER_CKSUM, "outer-ip4-csum-rx")                              \
 539   _ (9, RX_UDP_OUTER_CKSUM, "outer-udp-csum-rx")                              \
 540   _ (10, TCP_GSO, "tcp-tso")                                                  \
 541   _ (11, UDP_GSO, "udp-gso")                                                  \
 542   _ (12, VXLAN_TNL_GSO, "vxlan-tnl-gso")                                      \
 543   _ (13, IPIP_TNL_GSO, "ipip-tnl-gso")                                        \
 544   _ (14, GENEVE_TNL_GSO, "geneve-tnl-gso")                                    \
 545   _ (15, GRE_TNL_GSO, "gre-tnl-gso")                                          \
 546   _ (16, UDP_TNL_GSO, "udp-tnl-gso")                                          \
 547   _ (17, IP_TNL_GSO, "ip-tnl-gso")                                            \
 548   _ (18, TCP_LRO, "tcp-lro")                                                  \
 549   _ (30, INT_MODE, "int-mode")                                                \
 550   _ (31, MAC_FILTER, "mac-filter")
 551
 552 typedef enum vnet_hw_if_caps_t_
 553 {
 554   VNET_HW_INTERFACE_CAP_NONE,
 555 #define _(bit, sfx, str) VNET_HW_IF_CAP_##sfx = (1 << (bit)),
 556   foreach_vnet_hw_if_caps
 557 #undef _
 558
 559 } vnet_hw_if_caps_t;
 560
 561 #define VNET_HW_IF_CAP_L4_TX_CKSUM                                            \
 562   (VNET_HW_IF_CAP_TX_TCP_CKSUM | VNET_HW_IF_CAP_TX_UDP_CKSUM)
 563
 564 #define VNET_HW_IF_CAP_TX_CKSUM                                               \
 565   (VNET_HW_IF_CAP_TX_IP4_CKSUM | VNET_HW_IF_CAP_TX_TCP_CKSUM |                \
 566    VNET_HW_IF_CAP_TX_UDP_CKSUM)
 567
 568 #define VNET_HW_IF_CAP_TX_OUTER_CKSUM                                         \
 569   (VNET_HW_IF_CAP_TX_IP4_OUTER_CKSUM | VNET_HW_IF_CAP_TX_UDP_OUTER_CKSUM)
 570
 571 #define VNET_HW_IF_CAP_TX_CKSUM_MASK                                          \
 572   (VNET_HW_IF_CAP_TX_CKSUM | VNET_HW_IF_CAP_TX_OUTER_CKSUM)
 573
 574 #define VNET_HW_IF_CAP_L4_RX_CKSUM                                            \
 575   (VNET_HW_IF_CAP_RX_TCP_CKSUM | VNET_HW_IF_CAP_RX_UDP_CKSUM)
 576
 577 #define VNET_HW_IF_CAP_RX_CKSUM                                               \
 578   (VNET_HW_IF_CAP_RX_IP4_CKSUM | VNET_HW_IF_CAP_RX_TCP_CKSUM |                \
 579    VNET_HW_IF_CAP_RX_UDP_CKSUM)
 580
 581 #define VNET_HW_IF_CAP_TNL_GSO_MASK                                           \
 582   VNET_HW_IF_CAP_VXLAN_TNL_GSO | VNET_HW_IF_CAP_IPIP_TNL_GSO
 583
 584 #define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT 1
 585 #define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT  3
 586 #define VNET_HW_INTERFACE_FLAG_DUPLEX_MASK      \
 587   (VNET_HW_INTERFACE_FLAG_HALF_DUPLEX |         \
 588    VNET_HW_INTERFACE_FLAG_FULL_DUPLEX)
 589
 590 typedef struct
 591 {
 592   /* hw interface index */
 593   u32 hw_if_index;
 594
 595   /* device instance */
 596   u32 dev_instance;
 597
 598   /* index of thread pollling this queue */
 599   u32 thread_index;
 600
 601   /* file index of queue interrupt line */
 602   u32 file_index;
 603
 604   /* hardware queue identifier */
 605   u32 queue_id;
 606
 607   /* mode */
 608   vnet_hw_if_rx_mode mode : 8;
 609 #define VNET_HW_IF_RXQ_THREAD_ANY      ~0
 610 #define VNET_HW_IF_RXQ_NO_RX_INTERRUPT ~0
 611 } vnet_hw_if_rx_queue_t;
 612
 613 typedef struct
 614 {
 615   u8 shared_queue : 1;
 616   /* hw interface index */
 617   u32 hw_if_index;
 618
 619   /* hardware queue identifier */
 620   u32 queue_id;
 621
 622   /* bitmap of threads which use this queue */
 623   clib_bitmap_t *threads;
 624 } vnet_hw_if_tx_queue_t;
 625
 626 typedef enum
 627 {
 628   VNET_HW_IF_TX_FRAME_HINT_NOT_CHAINED = (1 << 0),
 629   VNET_HW_IF_TX_FRAME_HINT_NO_GSO = (1 << 1),
 630   VNET_HW_IF_TX_FRAME_HINT_NO_CKSUM_OFFLOAD = (1 << 2),
 631 } vnet_hw_if_tx_frame_hint_t;
 632
 633 typedef struct
 634 {
 635   u8 shared_queue : 1;
 636   vnet_hw_if_tx_frame_hint_t hints : 16;
 637   u32 queue_id;
 638 } vnet_hw_if_tx_frame_t;
 639
 640 typedef struct
 641 {
 642   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 643   vnet_hw_if_tx_frame_t *frame;
 644   u32 *lookup_table;
 645   u32 n_queues;
 646 } vnet_hw_if_output_node_runtime_t;
 647
 648 /* Hardware-interface.  This corresponds to a physical wire
 649    that packets flow over. */
 650 typedef struct vnet_hw_interface_t
 651 {
 652   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 653   /* flags */
 654   vnet_hw_interface_flags_t flags;
 655
 656   /* capabilities flags */
 657   vnet_hw_if_caps_t caps;
 658
 659   /* Hardware address as vector.  Zero (e.g. zero-length vector) if no
 660      address for this class (e.g. PPP). */
 661   u8 *hw_address;
 662
 663   /* Interface is up as far as software is concerned. */
 664   /* NAME.{output,tx} nodes for this interface. */
 665   u32 output_node_index, tx_node_index;
 666
 667   /* interface-output-arc-end node next index for tx node */
 668   u32 if_out_arc_end_node_next_index;
 669
 670   /* (dev_class, dev_instance) uniquely identifies hw interface. */
 671   u32 dev_class_index;
 672   u32 dev_instance;
 673
 674   /* (hw_class, hw_instance) uniquely identifies hw interface. */
 675   u32 hw_class_index;
 676   u32 hw_instance;
 677
 678   /* Hardware index for this hardware interface. */
 679   u32 hw_if_index;
 680
 681   /* Software index for this hardware interface. */
 682   u32 sw_if_index;
 683
 684   /* per thread output-node runtimes */
 685   vnet_hw_if_output_node_runtime_t *output_node_thread_runtimes;
 686
 687   CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
 688
 689   /* Interface name. */
 690   u8 *name;
 691
 692   /* link speed in kbps */
 693   u32 link_speed;
 694
 695   /* Next index in interface-output node for this interface
 696      used by node function vnet_per_buffer_interface_output() */
 697   u32 output_node_next_index;
 698
 699   /* called when hw interface is using transmit side packet steering */
 700   vnet_hash_fn_t hf;
 701
 702   /* Maximum transmit rate for this interface in bits/sec. */
 703   f64 max_rate_bits_per_sec;
 704
 705   /* Smallest packet size for this interface. */
 706   u32 min_frame_size;
 707
 708   /* Largest frame size for this interface. */
 709   u32 max_frame_size;
 710
 711   /* Layer 2 overhead */
 712   u16 frame_overhead;
 713
 714   /* Hash table mapping sub interface id to sw_if_index. */
 715   uword *sub_interface_sw_if_index_by_id;
 716
 717   /* Count of number of L2 and L3 subinterfaces */
 718   u32 l2_if_count;
 719   u32 l3_if_count;
 720
 721   /* Bonded interface info -
 722      0       - not a bonded interface nor a slave
 723      ~0      - slave to a bonded interface
 724      others  - A bonded interface with a pointer to bitmap for all slaves */
 725   uword *bond_info;
 726 #define VNET_HW_INTERFACE_BOND_INFO_NONE ((uword *) 0)
 727 #define VNET_HW_INTERFACE_BOND_INFO_SLAVE ((uword *) ~0)
 728
 729   /* Input node */
 730   u32 input_node_index;
 731
 732   vnet_hw_if_rx_mode default_rx_mode;
 733
 734   /* rx queues */
 735   u32 *rx_queue_indices;
 736
 737   /* tx queues */
 738   u32 *tx_queue_indices;
 739
 740   /* numa node that hardware device connects to */
 741   u8 numa_node;
 742
 743   /* rss queues bitmap */
 744   clib_bitmap_t *rss_queues;
 745
 746   /* trace */
 747   i32 n_trace;
 748
 749   u32 trace_classify_table_index;
 750 } vnet_hw_interface_t;
 751
 752 STATIC_ASSERT_OFFSET_OF (vnet_hw_interface_t, cacheline1,
 753                          CLIB_CACHE_LINE_BYTES);
 754
 755 typedef struct
 756 {
 757   u32 dev_instance;
 758   u32 queue_id;
 759 } vnet_hw_if_rxq_poll_vector_t;
 760
 761 typedef struct
 762 {
 763   vnet_hw_if_rxq_poll_vector_t *rxq_vector_int;
 764   vnet_hw_if_rxq_poll_vector_t *rxq_vector_poll;
 765   void *rxq_interrupts;
 766 } vnet_hw_if_rx_node_runtime_t;
 767
 768 extern vnet_device_class_t vnet_local_interface_device_class;
 769
 770 typedef enum
 771 {
 772   /* A hw interface. */
 773   VNET_SW_INTERFACE_TYPE_HARDWARE,
 774
 775   /* A sub-interface. */
 776   VNET_SW_INTERFACE_TYPE_SUB,
 777   VNET_SW_INTERFACE_TYPE_P2P,
 778   VNET_SW_INTERFACE_TYPE_PIPE,
 779 } vnet_sw_interface_type_t;
 780
 781 typedef struct
 782 {
 783   /*
 784    * Subinterface ID. A number 0-N to uniquely identify
 785    * this subinterface under the main (parent?) interface
 786    */
 787   u32 id;
 788
 789   /* Classification data. Used to associate packet header with subinterface. */
 790   struct
 791   {
 792     u16 outer_vlan_id;
 793     u16 inner_vlan_id;
 794     union
 795     {
 796       u16 raw_flags;
 797       struct
 798       {
 799         u16 no_tags:1;
 800         u16 one_tag:1;
 801         u16 two_tags:1;
 802         u16 dot1ad:1;           /* 0 = dot1q, 1=dot1ad */
 803         u16 exact_match:1;
 804         u16 default_sub:1;
 805         u16 outer_vlan_id_any:1;
 806         u16 inner_vlan_id_any:1;
 807       } flags;
 808     };
 809   } eth;
 810 } vnet_sub_interface_t;
 811
 812 typedef struct
 813 {
 814   /*
 815    * Subinterface ID. A number 0-N to uniquely identify
 816    * this subinterface under the main interface
 817    */
 818   u32 id;
 819   u32 pool_index;
 820   u8 client_mac[6];
 821 } vnet_p2p_sub_interface_t;
 822
 823 typedef enum
 824 {
 825   /* THe BVI interface */
 826   VNET_FLOOD_CLASS_BVI,
 827   /* Always flood */
 828   VNET_FLOOD_CLASS_NORMAL,
 829   VNET_FLOOD_CLASS_TUNNEL_MASTER,
 830   /* Does not flood when tunnel master is in the same L2 BD */
 831   VNET_FLOOD_CLASS_TUNNEL_NORMAL,
 832   /* Never flood to this type */
 833   VNET_FLOOD_CLASS_NO_FLOOD,
 834 } vnet_flood_class_t;
 835
 836 /* Per protocol MTU */
 837 typedef enum
 838 {
 839   VNET_MTU_L3,                  /* Default payload MTU (without L2 headers) */
 840   VNET_MTU_IP4,                 /* Per-protocol MTUs overriding default */
 841   VNET_MTU_IP6,
 842   VNET_MTU_MPLS,
 843   VNET_N_MTU
 844 } vnet_mtu_t;
 845
 846 extern vnet_mtu_t vnet_link_to_mtu (vnet_link_t link);
 847
 848 typedef enum vnet_sw_interface_flags_t_
 849 {
 850   VNET_SW_INTERFACE_FLAG_NONE = 0,
 851   /* Interface is "up" meaning administratively up.
 852      Up in the sense of link state being up is maintained by hardware interface. */
 853   VNET_SW_INTERFACE_FLAG_ADMIN_UP = (1 << 0),
 854
 855   /* Interface is disabled for forwarding: punt all traffic to slow-path. */
 856   VNET_SW_INTERFACE_FLAG_PUNT = (1 << 1),
 857
 858   __VNET_SW_INTERFACE_FLAG_UNSUED = (1 << 2),
 859
 860   VNET_SW_INTERFACE_FLAG_UNNUMBERED = (1 << 3),
 861
 862   __VNET_SW_INTERFACE_FLAG_UNUSED2 = (1 << 4),
 863
 864   /* Interface does not appear in CLI/API */
 865   VNET_SW_INTERFACE_FLAG_HIDDEN = (1 << 5),
 866
 867   /* Interface in ERROR state */
 868   VNET_SW_INTERFACE_FLAG_ERROR = (1 << 6),
 869
 870   /* Interface has IP configured directed broadcast */
 871   VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST = (1 << 7),
 872
 873 } __attribute__ ((packed)) vnet_sw_interface_flags_t;
 874
 875 /* Software-interface.  This corresponds to a Ethernet VLAN, ATM vc, a
 876    tunnel, etc.  Configuration (e.g. IP address) gets attached to
 877    software interface. */
 878 typedef struct
 879 {
 880   vnet_sw_interface_type_t type:16;
 881
 882   vnet_sw_interface_flags_t flags;
 883
 884   /* Index for this interface. */
 885   u32 sw_if_index;
 886
 887   /* Software interface index of super-interface;
 888      equal to sw_if_index if this interface is not a
 889      sub-interface. */
 890   u32 sup_sw_if_index;
 891
 892   /* this swif is unnumbered, use addresses on unnumbered_sw_if_index... */
 893   u32 unnumbered_sw_if_index;
 894
 895   /* VNET_SW_INTERFACE_TYPE_HARDWARE. */
 896   u32 hw_if_index;
 897
 898   /* MTU for network layer (not including L2 headers) */
 899   u32 mtu[VNET_N_MTU];
 900
 901   /* VNET_SW_INTERFACE_TYPE_SUB. */
 902   vnet_sub_interface_t sub;
 903
 904   /* VNET_SW_INTERFACE_TYPE_P2P. */
 905   vnet_p2p_sub_interface_t p2p;
 906
 907   vnet_flood_class_t flood_class;
 908 } vnet_sw_interface_t;
 909
 910 typedef enum
 911 {
 912   /* Simple counters. */
 913   VNET_INTERFACE_COUNTER_DROP = 0,
 914   VNET_INTERFACE_COUNTER_PUNT = 1,
 915   VNET_INTERFACE_COUNTER_IP4 = 2,
 916   VNET_INTERFACE_COUNTER_IP6 = 3,
 917   VNET_INTERFACE_COUNTER_RX_NO_BUF = 4,
 918   VNET_INTERFACE_COUNTER_RX_MISS = 5,
 919   VNET_INTERFACE_COUNTER_RX_ERROR = 6,
 920   VNET_INTERFACE_COUNTER_TX_ERROR = 7,
 921   VNET_INTERFACE_COUNTER_MPLS = 8,
 922   VNET_N_SIMPLE_INTERFACE_COUNTER = 9,
 923   /* Combined counters. */
 924   VNET_INTERFACE_COUNTER_RX = 0,
 925   VNET_INTERFACE_COUNTER_RX_UNICAST = 1,
 926   VNET_INTERFACE_COUNTER_RX_MULTICAST = 2,
 927   VNET_INTERFACE_COUNTER_RX_BROADCAST = 3,
 928   VNET_INTERFACE_COUNTER_TX = 4,
 929   VNET_INTERFACE_COUNTER_TX_UNICAST = 5,
 930   VNET_INTERFACE_COUNTER_TX_MULTICAST = 6,
 931   VNET_INTERFACE_COUNTER_TX_BROADCAST = 7,
 932   VNET_N_COMBINED_INTERFACE_COUNTER = 8,
 933 } vnet_interface_counter_type_t;
 934
 935 #define foreach_rx_combined_interface_counter(_x)               \
 936   for (_x = VNET_INTERFACE_COUNTER_RX;                          \
 937        _x <= VNET_INTERFACE_COUNTER_RX_BROADCAST;               \
 938        _x++)
 939
 940 #define foreach_tx_combined_interface_counter(_x)               \
 941   for (_x = VNET_INTERFACE_COUNTER_TX;                          \
 942        _x <= VNET_INTERFACE_COUNTER_TX_BROADCAST;               \
 943        _x++)
 944
 945 #define foreach_simple_interface_counter_name   \
 946   _(DROP, drops, if)                            \
 947   _(PUNT, punt, if)                             \
 948   _(IP4, ip4, if)                               \
 949   _(IP6, ip6, if)                               \
 950   _(RX_NO_BUF, rx-no-buf, if)                   \
 951   _(RX_MISS, rx-miss, if)                       \
 952   _(RX_ERROR, rx-error, if)                     \
 953   _(TX_ERROR, tx-error, if)         \
 954   _(MPLS, mpls, if)
 955
 956 #define foreach_combined_interface_counter_name \
 957   _(RX, rx, if)                                 \
 958   _(RX_UNICAST, rx-unicast, if)                 \
 959   _(RX_MULTICAST, rx-multicast, if)             \
 960   _(RX_BROADCAST, rx-broadcast, if)             \
 961   _(TX, tx, if)                                 \
 962   _(TX_UNICAST, tx-unicast, if)                 \
 963   _(TX_MULTICAST, tx-multicast, if)             \
 964   _(TX_BROADCAST, tx-broadcast, if)
 965
 966 typedef enum
 967 {
 968   COLLECT_SIMPLE_STATS = 0,
 969   COLLECT_DETAILED_STATS = 1,
 970 } vnet_interface_stats_collection_mode_e;
 971
 972 extern int collect_detailed_interface_stats_flag;
 973
 974 static inline int
 975 collect_detailed_interface_stats (void)
 976 {
 977   return collect_detailed_interface_stats_flag;
 978 }
 979
 980 void collect_detailed_interface_stats_flag_set (void);
 981 void collect_detailed_interface_stats_flag_clear (void);
 982
 983
 984 typedef struct
 985 {
 986   u32 output_node_index;
 987   u32 tx_node_index;
 988 } vnet_hw_interface_nodes_t;
 989
 990 typedef struct
 991 {
 992   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 993   u32 *split_buffers;
 994 } vnet_interface_per_thread_data_t;
 995
 996 typedef u8 *(*vnet_buffer_opquae_formatter_t) (const vlib_buffer_t * b,
 997                                                u8 * s);
 998
 999 typedef struct
1000 {
1001   /* Hardware interfaces. */
1002   vnet_hw_interface_t *hw_interfaces;
1003
1004   /* Hardware interface RX queues */
1005   vnet_hw_if_rx_queue_t *hw_if_rx_queues;
1006   uword *rxq_index_by_hw_if_index_and_queue_id;
1007
1008   /* Hardware interface TX queues */
1009   vnet_hw_if_tx_queue_t *hw_if_tx_queues;
1010   uword *txq_index_by_hw_if_index_and_queue_id;
1011
1012   /* Hash table mapping HW interface name to index. */
1013   uword *hw_interface_by_name;
1014
1015   /* Vectors if hardware interface classes and device classes. */
1016   vnet_hw_interface_class_t *hw_interface_classes;
1017   vnet_device_class_t *device_classes;
1018
1019   /* Hash table mapping name to hw interface/device class. */
1020   uword *hw_interface_class_by_name;
1021   uword *device_class_by_name;
1022
1023   /* Software interfaces. */
1024   vnet_sw_interface_t *sw_interfaces;
1025
1026   /* Hash table mapping sub intfc sw_if_index by sup sw_if_index and sub id */
1027   uword *sw_if_index_by_sup_and_sub;
1028
1029   /* Software interface counters both simple and combined
1030      packet and byte counters. */
1031   clib_spinlock_t sw_if_counter_lock;
1032   vlib_simple_counter_main_t *sw_if_counters;
1033   vlib_combined_counter_main_t *combined_sw_if_counters;
1034
1035   vnet_hw_interface_nodes_t *deleted_hw_interface_nodes;
1036
1037   /*
1038    * pcap drop tracing
1039    * Only the drop filter hash lives here. See ../src/vlib/main.h for
1040    * the rest of the variables.
1041    */
1042   uword *pcap_drop_filter_hash;
1043
1044   /* Buffer metadata format helper functions */
1045   vnet_buffer_opquae_formatter_t *buffer_opaque_format_helpers;
1046   vnet_buffer_opquae_formatter_t *buffer_opaque2_format_helpers;
1047
1048   /* per-thread data */
1049   vnet_interface_per_thread_data_t *per_thread_data;
1050
1051   /* feature_arc_index */
1052   u8 output_feature_arc_index;
1053
1054   /* fast lookup tables */
1055   u32 *hw_if_index_by_sw_if_index;
1056   u16 *if_out_arc_end_next_index_by_sw_if_index;
1057 } vnet_interface_main_t;
1058
1059 static inline void
1060 vnet_interface_counter_lock (vnet_interface_main_t * im)
1061 {
1062   if (im->sw_if_counter_lock)
1063     clib_spinlock_lock (&im->sw_if_counter_lock);
1064 }
1065
1066 static inline void
1067 vnet_interface_counter_unlock (vnet_interface_main_t * im)
1068 {
1069   if (im->sw_if_counter_lock)
1070     clib_spinlock_unlock (&im->sw_if_counter_lock);
1071 }
1072
1073 void vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add);
1074
1075 int vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance);
1076
1077 void vnet_register_format_buffer_opaque_helper
1078   (vnet_buffer_opquae_formatter_t fn);
1079
1080 void vnet_register_format_buffer_opaque2_helper
1081   (vnet_buffer_opquae_formatter_t fn);
1082
1083 typedef struct
1084 {
1085   u8 *filename;
1086   int enable;
1087   int status;
1088   u32 packets_to_capture;
1089   u32 max_bytes_per_pkt;
1090   u8 rx_enable;
1091   u8 tx_enable;
1092   u8 drop_enable;
1093   u8 preallocate_data;
1094   u8 free_data;
1095   u32 sw_if_index;
1096   int filter;
1097   vlib_error_t drop_err;
1098 } vnet_pcap_dispatch_trace_args_t;
1099
1100 int vnet_pcap_dispatch_trace_configure (vnet_pcap_dispatch_trace_args_t *);
1101
1102 extern vlib_node_registration_t vnet_interface_output_node;
1103 extern vlib_node_registration_t vnet_interface_output_arc_end_node;
1104
1105 #endif /* included_vnet_interface_h */
1106
1107 /*
1108  * fd.io coding-style-patch-verification: ON
1109  *
1110  * Local Variables:
1111  * eval: (c-set-style "gnu")
1112  * End:
1113  */