Line data Source code
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 : * ethernet.h: types/functions for ethernet.
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_ethernet_h
41 : #define included_ethernet_h
42 :
43 : #include <vnet/vnet.h>
44 : #include <vnet/ethernet/packet.h>
45 : #include <vnet/ethernet/mac_address.h>
46 : #include <vnet/feature/feature.h>
47 :
48 : /* ethernet-input frame flags and scalar data */
49 :
50 : /* all packets in frame share same sw_if_index */
51 : #define ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX (1 << 0)
52 :
53 : /* all ip4 packets in frame have correct ip4 checksum */
54 : #define ETH_INPUT_FRAME_F_IP4_CKSUM_OK (1 << 1)
55 :
56 : typedef struct
57 : {
58 : u32 sw_if_index;
59 : u32 hw_if_index;
60 : } ethernet_input_frame_t;
61 :
62 : #ifdef CLIB_HAVE_VEC128
63 : static const u16x8 tagged_ethertypes = {
64 : (u16) ETHERNET_TYPE_VLAN,
65 : (u16) ETHERNET_TYPE_DOT1AD,
66 : (u16) ETHERNET_TYPE_VLAN_9100,
67 : (u16) ETHERNET_TYPE_VLAN_9200,
68 : /* duplicate last one to fill register */
69 : (u16) ETHERNET_TYPE_VLAN_9200,
70 : (u16) ETHERNET_TYPE_VLAN_9200,
71 : (u16) ETHERNET_TYPE_VLAN_9200,
72 : (u16) ETHERNET_TYPE_VLAN_9200
73 : };
74 : #endif
75 :
76 : static_always_inline int
77 79969472 : ethernet_frame_is_tagged (u16 type)
78 : {
79 : #ifdef CLIB_HAVE_VEC128
80 79969472 : return !u16x8_is_all_zero (tagged_ethertypes == u16x8_splat (type));
81 : #else
82 : if ((type == ETHERNET_TYPE_VLAN) ||
83 : (type == ETHERNET_TYPE_DOT1AD) ||
84 : (type == ETHERNET_TYPE_VLAN_9100) || (type == ETHERNET_TYPE_VLAN_9200))
85 : return 1;
86 : #endif
87 : return 0;
88 : }
89 :
90 : static_always_inline int
91 6049720 : ethernet_frame_is_any_tagged_x2 (u16 type0, u16 type1)
92 : {
93 : #ifdef CLIB_HAVE_VEC128
94 6049720 : u16x8 r0 = (tagged_ethertypes == u16x8_splat (type0));
95 6049720 : u16x8 r1 = (tagged_ethertypes == u16x8_splat (type1));
96 6049720 : return !u16x8_is_all_zero (r0 | r1);
97 : #else
98 : return ethernet_frame_is_tagged (type0) || ethernet_frame_is_tagged (type1);
99 : #endif
100 : }
101 :
102 : static_always_inline int
103 : ethernet_frame_is_any_tagged_x4 (u16 type0, u16 type1, u16 type2, u16 type3)
104 : {
105 : #ifdef CLIB_HAVE_VEC128
106 : u16x8 r0 = (tagged_ethertypes == u16x8_splat (type0));
107 : u16x8 r1 = (tagged_ethertypes == u16x8_splat (type1));
108 : u16x8 r2 = (tagged_ethertypes == u16x8_splat (type2));
109 : u16x8 r3 = (tagged_ethertypes == u16x8_splat (type3));
110 : return !u16x8_is_all_zero (r0 | r1 | r2 | r3);
111 : #else
112 : return ethernet_frame_is_tagged (type0) || ethernet_frame_is_tagged (type1)
113 : || ethernet_frame_is_tagged (type2) || ethernet_frame_is_tagged (type3);
114 : #endif
115 : }
116 :
117 : /* Max. sized ethernet/vlan header for parsing. */
118 : typedef struct
119 : {
120 : ethernet_header_t ethernet;
121 :
122 : /* Allow up to 2 stacked vlan headers. */
123 : ethernet_vlan_header_t vlan[2];
124 : } ethernet_max_header_t;
125 :
126 : struct vnet_hw_interface_t;
127 : /* Ethernet flag change callback. */
128 : typedef u32 (ethernet_flag_change_function_t)
129 : (vnet_main_t * vnm, struct vnet_hw_interface_t * hi, u32 flags);
130 :
131 : typedef struct
132 : {
133 : /* ethernet interface flags change */
134 : ethernet_flag_change_function_t *flag_change;
135 :
136 : /* set Max Frame Size callback */
137 : vnet_interface_set_max_frame_size_function_t *set_max_frame_size;
138 : } vnet_eth_if_callbacks_t;
139 :
140 : #define ETHERNET_MIN_PACKET_BYTES 64
141 : #define ETHERNET_MAX_PACKET_BYTES 9216
142 :
143 : /* ethernet dataplane loads mac address as u64 for efficiency */
144 : typedef union ethernet_interface_address
145 : {
146 : struct
147 : {
148 : mac_address_t mac;
149 : u16 zero;
150 : };
151 : u64 as_u64;
152 : } ethernet_interface_address_t;
153 :
154 : /* Ethernet interface instance. */
155 : typedef struct ethernet_interface
156 : {
157 : u32 flags;
158 :
159 : /* Top 16 bits for status and bottom 16 bits for set operation */
160 : #define ETHERNET_INTERFACE_FLAGS_STATUS_MASK (0xffff0000)
161 : #define ETHERNET_INTERFACE_FLAGS_SET_OPN_MASK (0x0000ffff)
162 :
163 : /* Interface driver/hw is in L3/non-promiscuous mode so packet DMAC
164 : would already be filtered */
165 : #define ETHERNET_INTERFACE_FLAG_STATUS_L3 (1 << 16)
166 :
167 : /* Set interface to default L3 mode */
168 : #define ETHERNET_INTERFACE_FLAG_DEFAULT_L3 0
169 :
170 : /* Set interface to accept all packets (promiscuous mode). */
171 : #define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL 1
172 :
173 : /* Callback, e.g. to turn on/off promiscuous mode */
174 : vnet_eth_if_callbacks_t cb;
175 :
176 : u32 driver_instance;
177 :
178 : /* Ethernet (MAC) address for this interface. */
179 : ethernet_interface_address_t address;
180 :
181 : /* Secondary MAC addresses for this interface */
182 : ethernet_interface_address_t *secondary_addrs;
183 : } ethernet_interface_t;
184 :
185 : extern vnet_hw_interface_class_t ethernet_hw_interface_class;
186 :
187 : typedef struct
188 : {
189 : /* Name (a c string). */
190 : char *name;
191 :
192 : /* Ethernet type in host byte order. */
193 : ethernet_type_t type;
194 :
195 : /* Node which handles this type. */
196 : u32 node_index;
197 :
198 : /* Next index for this type. */
199 : u32 next_index;
200 : } ethernet_type_info_t;
201 :
202 : typedef enum
203 : {
204 : #define ethernet_error(n,c,s) ETHERNET_ERROR_##n,
205 : #include <vnet/ethernet/error.def>
206 : #undef ethernet_error
207 : ETHERNET_N_ERROR,
208 : } ethernet_error_t;
209 :
210 :
211 : // Structs used when parsing packet to find sw_if_index
212 :
213 : typedef struct
214 : {
215 : u32 sw_if_index;
216 : u32 flags;
217 : // config entry is-valid flag
218 : // exact match flags (valid if packet has 0/1/2/3 tags)
219 : // L2 vs L3 forwarding mode
220 : #define SUBINT_CONFIG_MATCH_0_TAG (1<<0)
221 : #define SUBINT_CONFIG_MATCH_1_TAG (1<<1)
222 : #define SUBINT_CONFIG_MATCH_2_TAG (1<<2)
223 : #define SUBINT_CONFIG_MATCH_3_TAG (1<<3)
224 : #define SUBINT_CONFIG_VALID (1<<4)
225 : #define SUBINT_CONFIG_L2 (1<<5)
226 : #define SUBINT_CONFIG_P2P (1<<6)
227 :
228 : } subint_config_t;
229 :
230 : always_inline u32
231 0 : eth_create_valid_subint_match_flags (u32 num_tags)
232 : {
233 0 : return SUBINT_CONFIG_VALID | (1 << num_tags);
234 : }
235 :
236 :
237 : typedef struct
238 : {
239 : subint_config_t untagged_subint;
240 : subint_config_t default_subint;
241 : u16 dot1q_vlans; // pool id for vlan table
242 : u16 dot1ad_vlans; // pool id for vlan table
243 : } main_intf_t;
244 :
245 : typedef struct
246 : {
247 : subint_config_t single_tag_subint;
248 : subint_config_t inner_any_subint;
249 : u32 qinqs; // pool id for qinq table
250 : } vlan_intf_t;
251 :
252 : typedef struct
253 : {
254 : vlan_intf_t vlans[ETHERNET_N_VLAN];
255 : } vlan_table_t;
256 :
257 : typedef struct
258 : {
259 : subint_config_t subint;
260 : } qinq_intf_t;
261 :
262 : typedef struct
263 : {
264 : qinq_intf_t vlans[ETHERNET_N_VLAN];
265 : } qinq_table_t;
266 :
267 : // Structure mapping to a next index based on ethertype.
268 : // Common ethertypes are stored explicitly, others are
269 : // stored in a sparse table.
270 : typedef struct
271 : {
272 : /* Sparse vector mapping ethernet type in network byte order
273 : to next index. */
274 : u16 *input_next_by_type;
275 : u32 *sparse_index_by_input_next_index;
276 :
277 : /* cached next indexes for common ethertypes */
278 : u32 input_next_ip4;
279 : u32 input_next_ip6;
280 : u32 input_next_mpls;
281 : } next_by_ethertype_t;
282 :
283 : struct ethernet_main_t_;
284 :
285 : typedef void (ethernet_address_change_function_t)
286 : (struct ethernet_main_t_ * im, u32 sw_if_index, uword opaque);
287 :
288 : typedef struct
289 : {
290 : ethernet_address_change_function_t *function;
291 : uword function_opaque;
292 : } ethernet_address_change_ctx_t;
293 :
294 : typedef struct ethernet_main_t_
295 : {
296 : vlib_main_t *vlib_main;
297 :
298 : /* next node index for the L3 input node of each ethertype */
299 : next_by_ethertype_t l3_next;
300 :
301 : /* next node index for L2 interfaces */
302 : u32 l2_next;
303 :
304 : /* flag and next node index for L3 redirect */
305 : u32 redirect_l3;
306 : u32 redirect_l3_next;
307 :
308 : /* Pool of ethernet interface instances. */
309 : ethernet_interface_t *interfaces;
310 :
311 : ethernet_type_info_t *type_infos;
312 :
313 : /* Hash tables mapping name/type to type info index. */
314 : uword *type_info_by_name, *type_info_by_type;
315 :
316 : // The root of the vlan parsing tables. A vector with one element
317 : // for each main interface, indexed by hw_if_index.
318 : main_intf_t *main_intfs;
319 :
320 : // Pool of vlan tables
321 : vlan_table_t *vlan_pool;
322 :
323 : // Pool of qinq tables;
324 : qinq_table_t *qinq_pool;
325 :
326 : /* Set to one to use AB.CD.EF instead of A:B:C:D:E:F as ethernet format. */
327 : int format_ethernet_address_16bit;
328 :
329 : /* debug: make sure we don't wipe out an ethernet registration by mistake */
330 : u8 next_by_ethertype_register_called;
331 :
332 : /* Feature arc index */
333 : u8 output_feature_arc_index;
334 :
335 : /* Allocated loopback instances */
336 : uword *bm_loopback_instances;
337 :
338 : /** Functions to call when interface hw address changes. */
339 : ethernet_address_change_ctx_t *address_change_callbacks;
340 :
341 : /** Default interface MTU */
342 : u32 default_mtu;
343 :
344 : } ethernet_main_t;
345 :
346 : extern ethernet_main_t ethernet_main;
347 :
348 : always_inline ethernet_type_info_t *
349 1488623 : ethernet_get_type_info (ethernet_main_t * em, ethernet_type_t type)
350 : {
351 1488623 : uword *p = hash_get (em->type_info_by_type, type);
352 1488623 : return p ? vec_elt_at_index (em->type_infos, p[0]) : 0;
353 : }
354 :
355 : ethernet_interface_t *ethernet_get_interface (ethernet_main_t * em,
356 : u32 hw_if_index);
357 : mac_address_t *ethernet_interface_add_del_address (ethernet_main_t * em,
358 : u32 hw_if_index,
359 : const u8 * address,
360 : u8 is_add);
361 :
362 : void ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index);
363 :
364 : /* Register given node index to take input for given ethernet type. */
365 : void
366 : ethernet_register_input_type (vlib_main_t * vm,
367 : ethernet_type_t type, u32 node_index);
368 :
369 : /* Register given node index to take input for packet from L2 interfaces. */
370 : void ethernet_register_l2_input (vlib_main_t * vm, u32 node_index);
371 :
372 : /* Register given node index to take redirected L3 traffic, and enable L3 redirect */
373 : void ethernet_register_l3_redirect (vlib_main_t * vm, u32 node_index);
374 :
375 : /* Formats ethernet address X:X:X:X:X:X */
376 : u8 *format_mac_address (u8 * s, va_list * args);
377 : u8 *format_ethernet_address (u8 * s, va_list * args);
378 : u8 *format_ethernet_type (u8 * s, va_list * args);
379 : u8 *format_ethernet_vlan_tci (u8 * s, va_list * va);
380 : u8 *format_ethernet_header (u8 * s, va_list * args);
381 : u8 *format_ethernet_header_with_length (u8 * s, va_list * args);
382 :
383 : /* Parse ethernet address in either X:X:X:X:X:X unix or X.X.X cisco format. */
384 : uword unformat_ethernet_address (unformat_input_t * input, va_list * args);
385 : uword unformat_mac_address (unformat_input_t * input, va_list * args);
386 :
387 : /* Parse ethernet type as 0xXXXX or type name from ethernet/types.def.
388 : In either host or network byte order. */
389 : uword
390 : unformat_ethernet_type_host_byte_order (unformat_input_t * input,
391 : va_list * args);
392 : uword
393 : unformat_ethernet_type_net_byte_order (unformat_input_t * input,
394 : va_list * args);
395 :
396 : /* Parse ethernet header. */
397 : uword unformat_ethernet_header (unformat_input_t * input, va_list * args);
398 :
399 : /* Parse ethernet interface name; return hw_if_index. */
400 : uword unformat_ethernet_interface (unformat_input_t * input, va_list * args);
401 :
402 : uword unformat_pg_ethernet_header (unformat_input_t * input, va_list * args);
403 :
404 : void ethernet_setup_node (vlib_main_t *vm, u32 node_index);
405 :
406 : always_inline ethernet_header_t *
407 2532 : ethernet_buffer_get_header (vlib_buffer_t * b)
408 : {
409 2532 : return (void *) (b->data + vnet_buffer (b)->l2_hdr_offset);
410 : }
411 :
412 : /** Returns the number of VLAN headers in the current Ethernet frame in the
413 : * buffer. Returns 0, 1, 2 for the known header count. The value 3 indicates
414 : * the number of headers is not known.
415 : */
416 : #define ethernet_buffer_get_vlan_count(b) ( \
417 : ((b)->flags & VNET_BUFFER_FLAGS_VLAN_BITS) >> VNET_BUFFER_F_LOG2_VLAN_1_DEEP \
418 : )
419 :
420 : /** Sets the number of VLAN headers in the current Ethernet frame in the
421 : * buffer. Values 0, 1, 2 indicate the header count. The value 3 indicates
422 : * the number of headers is not known.
423 : */
424 : #define ethernet_buffer_set_vlan_count(b, v) ( \
425 : (b)->flags = ((b)->flags & ~VNET_BUFFER_FLAGS_VLAN_BITS) | \
426 : (((v) << VNET_BUFFER_F_LOG2_VLAN_1_DEEP) & VNET_BUFFER_FLAGS_VLAN_BITS) \
427 : )
428 :
429 : /** Adjusts the vlan count by the delta in 'v' */
430 : #define ethernet_buffer_adjust_vlan_count(b, v) ( \
431 : ethernet_buffer_set_vlan_count(b, \
432 : (word)ethernet_buffer_get_vlan_count(b) + (word)(v)) \
433 : )
434 :
435 : /** Adjusts the vlan count by the header size byte delta in 'v' */
436 : #define ethernet_buffer_adjust_vlan_count_by_bytes(b, v) ( \
437 : (b)->flags = ((b)->flags & ~VNET_BUFFER_FLAGS_VLAN_BITS) | (( \
438 : ((b)->flags & VNET_BUFFER_FLAGS_VLAN_BITS) + \
439 : ((v) << (VNET_BUFFER_F_LOG2_VLAN_1_DEEP - 2)) \
440 : ) & VNET_BUFFER_FLAGS_VLAN_BITS) \
441 : )
442 :
443 : /**
444 : * Determine the size of the Ethernet headers of the current frame in
445 : * the buffer. This uses the VLAN depth flags that are set by
446 : * ethernet-input. Because these flags are stored in the vlib_buffer_t
447 : * "flags" field this count is valid regardless of the node so long as it's
448 : * checked downstream of ethernet-input; That is, the value is not stored in
449 : * the opaque space.
450 : */
451 : #define ethernet_buffer_header_size(b) ( \
452 : ethernet_buffer_get_vlan_count((b)) * sizeof(ethernet_vlan_header_t) + \
453 : sizeof(ethernet_header_t) \
454 : )
455 :
456 : ethernet_main_t *ethernet_get_main (vlib_main_t * vm);
457 : u32 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags);
458 : void ethernet_sw_interface_set_l2_mode (vnet_main_t * vnm, u32 sw_if_index,
459 : u32 l2);
460 : void ethernet_sw_interface_set_l2_mode_noport (vnet_main_t * vnm,
461 : u32 sw_if_index, u32 l2);
462 : void ethernet_set_rx_redirect (vnet_main_t * vnm, vnet_hw_interface_t * hi,
463 : u32 enable);
464 :
465 : clib_error_t *next_by_ethertype_init (next_by_ethertype_t * l3_next);
466 : clib_error_t *next_by_ethertype_register (next_by_ethertype_t * l3_next,
467 : u32 ethertype, u32 next_index);
468 :
469 : int vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
470 : u8 is_specified, u32 user_instance);
471 : int vnet_delete_loopback_interface (u32 sw_if_index);
472 : int vnet_create_sub_interface (u32 sw_if_index, u32 id,
473 : u32 flags, u16 inner_vlan_id,
474 : u16 outer_vlan_id, u32 * sub_sw_if_index);
475 : int vnet_delete_sub_interface (u32 sw_if_index);
476 :
477 : // Perform ethernet subinterface classification table lookups given
478 : // the ports's sw_if_index and fields extracted from the ethernet header.
479 : // The resulting tables are used by identify_subint().
480 : always_inline void
481 180792 : eth_vlan_table_lookups (ethernet_main_t * em,
482 : vnet_main_t * vnm,
483 : u32 port_sw_if_index0,
484 : u16 first_ethertype,
485 : u16 outer_id,
486 : u16 inner_id,
487 : vnet_hw_interface_t ** hi,
488 : main_intf_t ** main_intf,
489 : vlan_intf_t ** vlan_intf, qinq_intf_t ** qinq_intf)
490 : {
491 : vlan_table_t *vlan_table;
492 : qinq_table_t *qinq_table;
493 : u32 vlan_table_id;
494 :
495 : // Read the main, vlan, and qinq interface table entries
496 : // TODO: Consider if/how to prefetch tables. Also consider
497 : // single-entry cache to skip table lookups and identify_subint()
498 : // processing.
499 180792 : *hi = vnet_get_sup_hw_interface (vnm, port_sw_if_index0);
500 180792 : *main_intf = vec_elt_at_index (em->main_intfs, (*hi)->hw_if_index);
501 :
502 : // Always read the vlan and qinq tables, even if there are not that
503 : // many tags on the packet. This makes the lookups and comparisons
504 : // easier (and less branchy).
505 180792 : vlan_table_id = (first_ethertype == ETHERNET_TYPE_DOT1AD) ?
506 180792 : (*main_intf)->dot1ad_vlans : (*main_intf)->dot1q_vlans;
507 180792 : vlan_table = vec_elt_at_index (em->vlan_pool, vlan_table_id);
508 180792 : *vlan_intf = &vlan_table->vlans[outer_id];
509 :
510 180792 : qinq_table = vec_elt_at_index (em->qinq_pool, (*vlan_intf)->qinqs);
511 180792 : *qinq_intf = &qinq_table->vlans[inner_id];
512 180792 : }
513 :
514 :
515 : // Determine the subinterface for this packet, given the result of the
516 : // vlan table lookups and vlan header parsing. Check the most specific
517 : // matches first.
518 : // Returns 1 if a matching subinterface was found, otherwise returns 0.
519 : always_inline u32
520 181039 : eth_identify_subint (vnet_hw_interface_t * hi,
521 : u32 match_flags,
522 : main_intf_t * main_intf,
523 : vlan_intf_t * vlan_intf,
524 : qinq_intf_t * qinq_intf,
525 : u32 * new_sw_if_index, u8 * error0, u32 * is_l2)
526 : {
527 : subint_config_t *subint;
528 :
529 : // Each comparison is checking both the valid flag and the number of tags
530 : // (incorporating exact-match/non-exact-match).
531 :
532 : // check for specific double tag
533 181039 : subint = &qinq_intf->subint;
534 181039 : if ((subint->flags & match_flags) == match_flags)
535 40 : goto matched;
536 :
537 : // check for specific outer and 'any' inner
538 180999 : subint = &vlan_intf->inner_any_subint;
539 180999 : if ((subint->flags & match_flags) == match_flags)
540 0 : goto matched;
541 :
542 : // check for specific single tag
543 180999 : subint = &vlan_intf->single_tag_subint;
544 180999 : if ((subint->flags & match_flags) == match_flags)
545 703 : goto matched;
546 :
547 : // check for default interface
548 180296 : subint = &main_intf->default_subint;
549 180296 : if ((subint->flags & match_flags) == match_flags)
550 0 : goto matched;
551 :
552 : // check for untagged interface
553 180296 : subint = &main_intf->untagged_subint;
554 180296 : if ((subint->flags & match_flags) == match_flags)
555 180292 : goto matched;
556 :
557 : // No matching subinterface
558 4 : *new_sw_if_index = ~0;
559 4 : *error0 = ETHERNET_ERROR_UNKNOWN_VLAN;
560 4 : *is_l2 = 0;
561 4 : return 0;
562 :
563 181035 : matched:
564 181035 : *new_sw_if_index = subint->sw_if_index;
565 181035 : *is_l2 = subint->flags & SUBINT_CONFIG_L2;
566 181035 : return 1;
567 : }
568 :
569 : always_inline ethernet_main_t *
570 21 : vnet_get_ethernet_main (void)
571 : {
572 21 : return ðernet_main;
573 : }
574 :
575 : typedef struct
576 : {
577 : u32 dev_class_index;
578 : u32 dev_instance;
579 : u16 max_frame_size;
580 : u16 frame_overhead;
581 : vnet_eth_if_callbacks_t cb;
582 : const u8 *address;
583 : } vnet_eth_interface_registration_t;
584 :
585 : u32 vnet_eth_register_interface (vnet_main_t *vnm,
586 : vnet_eth_interface_registration_t *r);
587 : void ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai);
588 : u8 *ethernet_build_rewrite (vnet_main_t * vnm,
589 : u32 sw_if_index,
590 : vnet_link_t link_type, const void *dst_address);
591 : void ethernet_input_init (vlib_main_t * vm, ethernet_main_t * em);
592 :
593 : extern vlib_node_registration_t ethernet_input_node;
594 :
595 : #endif /* included_ethernet_h */
596 :
597 : /*
598 : * fd.io coding-style-patch-verification: ON
599 : *
600 : * Local Variables:
601 : * eval: (c-set-style "gnu")
602 : * End:
603 : */
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