FD.io VPP  v18.10-34-gcce845e
Vector Packet Processing
ip6_packet.h
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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  * ip6/packet.h: ip6 packet format
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_ip6_packet_h
41 #define included_ip6_packet_h
42 
43 #include <vnet/tcp/tcp_packet.h>
44 #include <vnet/ip/ip4_packet.h>
45 
46 typedef union
47 {
48  u8 as_u8[16];
49  u16 as_u16[8];
50  u32 as_u32[4];
51  u64 as_u64[2];
52  uword as_uword[16 / sizeof (uword)];
53 }
55 
56 typedef struct
57 {
58  ip6_address_t addr, mask;
60 
61 /* Packed so that the mhash key doesn't include uninitialized pad bytes */
62 /* *INDENT-OFF* */
63 typedef CLIB_PACKED (struct {
64  /* IP address must be first for ip_interface_address_get_address() to work */
65  ip6_address_t ip6_addr;
66  u32 fib_index;
67 }) ip6_address_fib_t;
68 /* *INDENT-ON* */
69 
70 typedef enum
71 {
75 } ip46_type_t;
76 
77 /* *INDENT-OFF* */
78 typedef CLIB_PACKED (union {
79  struct {
80  u32 pad[3];
81  ip4_address_t ip4;
82  };
83  ip6_address_t ip6;
84  u8 as_u8[16];
85  u64 as_u64[2];
86 }) ip46_address_t;
87 /* *INDENT-ON* */
88 #define ip46_address_is_ip4(ip46) (((ip46)->pad[0] | (ip46)->pad[1] | (ip46)->pad[2]) == 0)
89 #define ip46_address_mask_ip4(ip46) ((ip46)->pad[0] = (ip46)->pad[1] = (ip46)->pad[2] = 0)
90 #define ip46_address_set_ip4(ip46, ip) (ip46_address_mask_ip4(ip46), (ip46)->ip4 = (ip)[0])
91 #define ip46_address_reset(ip46) ((ip46)->as_u64[0] = (ip46)->as_u64[1] = 0)
92 #define ip46_address_cmp(ip46_1, ip46_2) (memcmp(ip46_1, ip46_2, sizeof(*ip46_1)))
93 #define ip46_address_is_zero(ip46) (((ip46)->as_u64[0] == 0) && ((ip46)->as_u64[1] == 0))
94 #define ip46_address_is_equal(a1, a2) (((a1)->as_u64[0] == (a2)->as_u64[0]) \
95  && ((a1)->as_u64[1] == (a2)->as_u64[1]))
96 #define ip46_address_initializer {{{ 0 }}}
97 
99 ip46_address_copy (ip46_address_t * dst, const ip46_address_t * src)
100 {
101  dst->as_u64[0] = src->as_u64[0];
102  dst->as_u64[1] = src->as_u64[1];
103 }
104 
106 ip46_address_set_ip6 (ip46_address_t * dst, const ip6_address_t * src)
107 {
108  dst->as_u64[0] = src->as_u64[0];
109  dst->as_u64[1] = src->as_u64[1];
110 }
111 
112 always_inline ip46_address_t
113 to_ip46 (u32 is_ipv6, u8 * buf)
114 {
115  ip46_address_t ip;
116  if (is_ipv6)
117  ip.ip6 = *((ip6_address_t *) buf);
118  else
119  ip46_address_set_ip4 (&ip, (ip4_address_t *) buf);
120  return ip;
121 }
122 
123 
124 always_inline void
125 ip6_addr_fib_init (ip6_address_fib_t * addr_fib,
126  const ip6_address_t * address, u32 fib_index)
127 {
128  addr_fib->ip6_addr = *address;
129  addr_fib->fib_index = fib_index;
130 }
131 
132 /* Special addresses:
133  unspecified ::/128
134  loopback ::1/128
135  global unicast 2000::/3
136  unique local unicast fc00::/7
137  link local unicast fe80::/10
138  multicast ff00::/8
139  ietf reserved everything else. */
140 
141 #define foreach_ip6_multicast_address_scope \
142  _ (loopback, 0x1) \
143  _ (link_local, 0x2) \
144  _ (admin_local, 0x4) \
145  _ (site_local, 0x5) \
146  _ (organization_local, 0x8) \
147  _ (global, 0xe)
148 
149 #define foreach_ip6_multicast_link_local_group_id \
150  _ (all_hosts, 0x1) \
151  _ (all_routers, 0x2) \
152  _ (rip_routers, 0x9) \
153  _ (eigrp_routers, 0xa) \
154  _ (pim_routers, 0xd) \
155  _ (mldv2_routers, 0x16)
156 
157 typedef enum
158 {
159 #define _(f,n) IP6_MULTICAST_SCOPE_##f = n,
161 #undef _
163 
164 typedef enum
165 {
166 #define _(f,n) IP6_MULTICAST_GROUP_ID_##f = n,
168 #undef _
170 
172 ip6_address_is_multicast (const ip6_address_t * a)
173 {
174  return a->as_u8[0] == 0xff;
175 }
176 
178 ip46_address_is_multicast (const ip46_address_t * a)
179 {
180  return ip46_address_is_ip4 (a) ? ip4_address_is_multicast (&a->ip4) :
181  ip6_address_is_multicast (&a->ip6);
182 }
183 
184 always_inline void
186  ip6_multicast_address_scope_t scope,
187  u16 id)
188 {
189  a->as_u64[0] = a->as_u64[1] = 0;
190  a->as_u16[0] = clib_host_to_net_u16 (0xff00 | scope);
191  a->as_u16[7] = clib_host_to_net_u16 (id);
192 }
193 
194 always_inline void
196 {
197  /* 0xff02::1:ffXX:XXXX. */
198  a->as_u64[0] = a->as_u64[1] = 0;
199  a->as_u16[0] = clib_host_to_net_u16 (0xff02);
200  a->as_u8[11] = 1;
201  ASSERT ((id >> 24) == 0);
202  id |= 0xff << 24;
203  a->as_u32[3] = clib_host_to_net_u32 (id);
204 }
205 
206 always_inline void
208  const u8 * ethernet_address)
209 {
210  a->as_u64[0] = a->as_u64[1] = 0;
211  a->as_u16[0] = clib_host_to_net_u16 (0xfe80);
212  /* Always set locally administered bit (6). */
213  a->as_u8[0x8] = ethernet_address[0] | (1 << 6);
214  a->as_u8[0x9] = ethernet_address[1];
215  a->as_u8[0xa] = ethernet_address[2];
216  a->as_u8[0xb] = 0xff;
217  a->as_u8[0xc] = 0xfe;
218  a->as_u8[0xd] = ethernet_address[3];
219  a->as_u8[0xe] = ethernet_address[4];
220  a->as_u8[0xf] = ethernet_address[5];
221 }
222 
223 always_inline void
224 ip6_multicast_ethernet_address (u8 * ethernet_address, u32 group_id)
225 {
226  ethernet_address[0] = 0x33;
227  ethernet_address[1] = 0x33;
228  ethernet_address[2] = ((group_id >> 24) & 0xff);
229  ethernet_address[3] = ((group_id >> 16) & 0xff);
230  ethernet_address[4] = ((group_id >> 8) & 0xff);
231  ethernet_address[5] = ((group_id >> 0) & 0xff);
232 }
233 
235 ip6_address_is_equal (const ip6_address_t * a, const ip6_address_t * b)
236 {
237  int i;
238  for (i = 0; i < ARRAY_LEN (a->as_uword); i++)
239  if (a->as_uword[i] != b->as_uword[i])
240  return 0;
241  return 1;
242 }
243 
245 ip6_address_is_equal_masked (const ip6_address_t * a,
246  const ip6_address_t * b,
247  const ip6_address_t * mask)
248 {
249  int i;
250  for (i = 0; i < ARRAY_LEN (a->as_uword); i++)
251  {
252  uword a_masked, b_masked;
253  a_masked = a->as_uword[i] & mask->as_uword[i];
254  b_masked = b->as_uword[i] & mask->as_uword[i];
255 
256  if (a_masked != b_masked)
257  return 0;
258  }
259  return 1;
260 }
261 
262 always_inline void
263 ip6_address_mask (ip6_address_t * a, const ip6_address_t * mask)
264 {
265  int i;
266  for (i = 0; i < ARRAY_LEN (a->as_uword); i++)
267  a->as_uword[i] &= mask->as_uword[i];
268 }
269 
270 always_inline void
271 ip6_address_set_zero (ip6_address_t * a)
272 {
273  int i;
274  for (i = 0; i < ARRAY_LEN (a->as_uword); i++)
275  a->as_uword[i] = 0;
276 }
277 
278 always_inline void
279 ip6_address_mask_from_width (ip6_address_t * a, u32 width)
280 {
281  int i, byte, bit, bitnum;
282  ASSERT (width <= 128);
283  memset (a, 0, sizeof (a[0]));
284  for (i = 0; i < width; i++)
285  {
286  bitnum = (7 - (i & 7));
287  byte = i / 8;
288  bit = 1 << bitnum;
289  a->as_u8[byte] |= bit;
290  }
291 }
292 
294 ip6_address_is_zero (const ip6_address_t * a)
295 {
296  int i;
297  for (i = 0; i < ARRAY_LEN (a->as_uword); i++)
298  if (a->as_uword[i] != 0)
299  return 0;
300  return 1;
301 }
302 
303 /* Check for unspecified address ::0 */
305 ip6_address_is_unspecified (const ip6_address_t * a)
306 {
307  return ip6_address_is_zero (a);
308 }
309 
310 /* Check for loopback address ::1 */
312 ip6_address_is_loopback (const ip6_address_t * a)
313 {
314  return (a->as_u64[0] == 0 &&
315  a->as_u32[2] == 0 &&
316  a->as_u16[6] == 0 && a->as_u8[14] == 0 && a->as_u8[15] == 1);
317 }
318 
319 /* Check for link local unicast fe80::/10. */
321 ip6_address_is_link_local_unicast (const ip6_address_t * a)
322 {
323  return a->as_u8[0] == 0xfe && (a->as_u8[1] & 0xc0) == 0x80;
324 }
325 
326 /* Check for unique local unicast fc00::/7. */
328 ip6_address_is_local_unicast (const ip6_address_t * a)
329 {
330  return (a->as_u8[0] & 0xfe) == 0xfc;
331 }
332 
333 /* Check for unique global unicast 2000::/3. */
335 ip6_address_is_global_unicast (const ip6_address_t * a)
336 {
337  return (a->as_u8[0] & 0xe0) == 0x20;
338 }
339 
340 /* Check for solicited node multicast 0xff02::1:ff00:0/104 */
343 {
344  return (a->as_u32[0] == clib_host_to_net_u32 (0xff020000)
345  && a->as_u32[1] == 0
346  && a->as_u32[2] == clib_host_to_net_u32 (1)
347  && a->as_u8[12] == 0xff);
348 }
349 
351 ip6_address_hash_to_u32 (const ip6_address_t * a)
352 {
353  return (a->as_u32[0] ^ a->as_u32[1] ^ a->as_u32[2] ^ a->as_u32[3]);
354 }
355 
357 ip6_address_hash_to_u64 (const ip6_address_t * a)
358 {
359  return (a->as_u64[0] ^ a->as_u64[1]);
360 }
361 
362 typedef struct
363 {
364  /* 4 bit version, 8 bit traffic class and 20 bit flow label. */
366 
367  /* Total packet length not including this header (but including
368  any extension headers if present). */
370 
371  /* Protocol for next header. */
373 
374  /* Hop limit decremented by router at each hop. */
376 
377  /* Source and destination address. */
378  ip6_address_t src_address, dst_address;
379 } ip6_header_t;
380 
383 {
384  return (i->ip_version_traffic_class_and_flow_label & 0x0FF00000) >> 20;
385 }
386 
389 {
390  return (clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label)
391  & 0x0ff00000) >> 20;
392 }
393 
396 {
397  u32 tmp =
398  clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label);
399  tmp &= 0xf00fffff;
400  tmp |= (dscp << 20);
401  ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (tmp);
402 }
403 
404 always_inline void *
406 {
407  return (void *) (i + 1);
408 }
409 
410 always_inline void
412 {
415  dst->payload_length = src->payload_length;
416  dst->protocol = src->protocol;
417  dst->hop_limit = src->hop_limit;
418 
419  dst->src_address.as_uword[0] = src->src_address.as_uword[0];
420  dst->src_address.as_uword[1] = src->src_address.as_uword[1];
421  dst->dst_address.as_uword[0] = src->dst_address.as_uword[0];
422  dst->dst_address.as_uword[1] = src->dst_address.as_uword[1];
423 }
424 
425 always_inline void
427 {
428  {
429  ip6_address_t src0, dst0;
430 
431  src0 = ip0->src_address;
432  dst0 = ip0->dst_address;
433  ip0->src_address = dst0;
434  ip0->dst_address = src0;
435  }
436 
437  {
438  u16 src0, dst0;
439 
440  src0 = tcp0->src;
441  dst0 = tcp0->dst;
442  tcp0->src = dst0;
443  tcp0->dst = src0;
444  }
445 }
446 
447 always_inline void
449  tcp_header_t * tcp0, tcp_header_t * tcp1)
450 {
451  {
452  ip6_address_t src0, dst0, src1, dst1;
453 
454  src0 = ip0->src_address;
455  src1 = ip1->src_address;
456  dst0 = ip0->dst_address;
457  dst1 = ip1->dst_address;
458  ip0->src_address = dst0;
459  ip1->src_address = dst1;
460  ip0->dst_address = src0;
461  ip1->dst_address = src1;
462  }
463 
464  {
465  u16 src0, dst0, src1, dst1;
466 
467  src0 = tcp0->src;
468  src1 = tcp1->src;
469  dst0 = tcp0->dst;
470  dst1 = tcp1->dst;
471  tcp0->src = dst0;
472  tcp1->src = dst1;
473  tcp0->dst = src0;
474  tcp1->dst = src1;
475  }
476 }
477 
478 
479 /* *INDENT-OFF* */
480 typedef CLIB_PACKED (struct {
481  u8 data;
482 }) ip6_pad1_option_t;
483 /* *INDENT-ON* */
484 
485 /* *INDENT-OFF* */
486 typedef CLIB_PACKED (struct {
487  u8 type;
488  u8 len;
489  u8 data[0];
490 }) ip6_padN_option_t;
491 /* *INDENT-ON* */
492 
493 /* *INDENT-OFF* */
494 typedef CLIB_PACKED (struct {
495 #define IP6_MLDP_ALERT_TYPE 0x5
496  u8 type;
497  u8 len;
498  u16 value;
499 }) ip6_router_alert_option_t;
500 /* *INDENT-ON* */
501 
502 /* *INDENT-OFF* */
503 typedef CLIB_PACKED (struct {
504  u8 next_hdr;
505  /* Length of this header plus option data in 8 byte units. */
506  u8 n_data_u64s;
507 }) ip6_ext_header_t;
508 
510 {
511  /*
512  * find out if nexthdr is an extension header or a protocol
513  */
514  return (nexthdr == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) ||
515  (nexthdr == IP_PROTOCOL_IPV6_FRAGMENTATION) ||
516  (nexthdr == IP_PROTOCOL_IPSEC_AH) ||
517  (nexthdr == IP_PROTOCOL_IPV6_ROUTE) ||
518  (nexthdr == IP_PROTOCOL_IP6_DESTINATION_OPTIONS);
519 }
520 
521 #define ip6_ext_header_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+1) << 3)
522 #define ip6_ext_authhdr_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+2) << 2)
523 
524 always_inline void *
525 ip6_ext_next_header (ip6_ext_header_t *ext_hdr )
526 { return (void *)((u8 *) ext_hdr + ip6_ext_header_len(ext_hdr)); }
527 
528 /*
529  * Macro to find the IPv6 ext header of type t
530  * I is the IPv6 header
531  * P is the previous IPv6 ext header (NULL if none)
532  * M is the matched IPv6 ext header of type t
533  */
534 #define ip6_ext_header_find_t(i, p, m, t) \
535 if ((i)->protocol == t) \
536 { \
537  (m) = (void *)((i)+1); \
538  (p) = NULL; \
539 } \
540 else \
541 { \
542  (m) = NULL; \
543  (p) = (void *)((i)+1); \
544  while (ip6_ext_hdr((p)->next_hdr) && \
545  ((ip6_ext_header_t *)(p))->next_hdr != (t)) \
546  { \
547  (p) = ip6_ext_next_header((p)); \
548  } \
549  if ( ((p)->next_hdr) == (t)) \
550  { \
551  (m) = (void *)(ip6_ext_next_header((p))); \
552  } \
553 }
554 
555 
556 typedef CLIB_PACKED (struct {
557  u8 next_hdr;
558  /* Length of this header plus option data in 8 byte units. */
559  u8 n_data_u64s;
560  u8 data[0];
561 }) ip6_hop_by_hop_ext_t;
562 /* *INDENT-ON* */
563 
564 /* *INDENT-OFF* */
565 typedef CLIB_PACKED (struct {
566  u8 next_hdr;
567  u8 rsv;
568  u16 fragment_offset_and_more;
569  u32 identification;
570 }) ip6_frag_hdr_t;
571 /* *INDENT-ON* */
572 
573 #define ip6_frag_hdr_offset(hdr) \
574  (clib_net_to_host_u16((hdr)->fragment_offset_and_more) >> 3)
575 
576 #define ip6_frag_hdr_offset_bytes(hdr) \
577  (8 * ip6_frag_hdr_offset(hdr))
578 
579 #define ip6_frag_hdr_more(hdr) \
580  (clib_net_to_host_u16((hdr)->fragment_offset_and_more) & 0x1)
581 
582 #define ip6_frag_hdr_offset_and_more(offset, more) \
583  clib_host_to_net_u16(((offset) << 3) + !!(more))
584 
585 #endif /* included_ip6_packet_h */
586 
587 /*
588  * fd.io coding-style-patch-verification: ON
589  *
590  * Local Variables:
591  * eval: (c-set-style "gnu")
592  * End:
593  */
#define foreach_ip6_multicast_link_local_group_id
Definition: ip6_packet.h:149
typedef address
Definition: ip_types.api:35
u8 pad[3]
log2 (size of the packing page block)
Definition: bihash_doc.h:61
vl_api_address_t src
Definition: vxlan_gbp.api:33
a
Definition: bitmap.h:538
ip6_multicast_address_scope_t
Definition: ip6_packet.h:157
u64 as_u64
Definition: bihash_doc.h:63
u8 as_u8[16]
Definition: ip6_packet.h:48
u64 as_u64[2]
Definition: ip6_packet.h:51
unsigned long u64
Definition: types.h:89
static void ip6_copy_header(ip6_header_t *dst, const ip6_header_t *src)
Definition: ip6_packet.h:411
static void * ip6_ext_next_header(ip6_ext_header_t *ext_hdr)
Definition: ip6_packet.h:525
int i
static uword ip6_address_is_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:328
static uword ip4_address_is_multicast(const ip4_address_t *a)
Definition: ip4_packet.h:317
static void ip6_address_mask(ip6_address_t *a, const ip6_address_t *mask)
Definition: ip6_packet.h:263
struct _tcp_header tcp_header_t
vhost_vring_addr_t addr
Definition: vhost_user.h:121
ip6_address_t src_address
Definition: ip6_packet.h:378
static u32 ip6_address_hash_to_u32(const ip6_address_t *a)
Definition: ip6_packet.h:351
unsigned char u8
Definition: types.h:56
uword as_uword[16/sizeof(uword)]
Definition: ip6_packet.h:52
typedef CLIB_PACKED(struct{ip6_address_t ip6_addr;u32 fib_index;}) ip6_address_fib_t
static uword ip46_address_is_multicast(const ip46_address_t *a)
Definition: ip6_packet.h:178
static u64 ip6_address_hash_to_u64(const ip6_address_t *a)
Definition: ip6_packet.h:357
memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define static_always_inline
Definition: clib.h:95
#define always_inline
Definition: clib.h:94
static_always_inline void ip6_set_traffic_class_network_order(ip6_header_t *ip6, u8 dscp)
Definition: ip6_packet.h:395
static_always_inline u8 ip6_traffic_class_network_order(const ip6_header_t *ip6)
Definition: ip6_packet.h:388
#define foreach_ip6_multicast_address_scope
Definition: ip6_packet.h:141
unsigned int u32
Definition: types.h:88
static void ip6_link_local_address_from_ethernet_address(ip6_address_t *a, const u8 *ethernet_address)
Definition: ip6_packet.h:207
ip6_address_t mask
Definition: ip6_packet.h:58
unsigned short u16
Definition: types.h:57
static uword ip6_address_is_equal_masked(const ip6_address_t *a, const ip6_address_t *b, const ip6_address_t *mask)
Definition: ip6_packet.h:245
#define ip6_ext_header_len(p)
Definition: ip6_packet.h:521
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:88
u32 as_u32[4]
Definition: ip6_packet.h:50
static void ip6_tcp_reply_x2(ip6_header_t *ip0, ip6_header_t *ip1, tcp_header_t *tcp0, tcp_header_t *tcp1)
Definition: ip6_packet.h:448
vl_api_address_t dst
Definition: vxlan_gbp.api:34
static void ip6_address_set_zero(ip6_address_t *a)
Definition: ip6_packet.h:271
static uword ip6_address_is_zero(const ip6_address_t *a)
Definition: ip6_packet.h:294
static_always_inline void ip46_address_copy(ip46_address_t *dst, const ip46_address_t *src)
Definition: ip6_packet.h:99
static uword ip6_address_is_loopback(const ip6_address_t *a)
Definition: ip6_packet.h:312
#define ARRAY_LEN(x)
Definition: clib.h:61
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:405
static u8 ip6_ext_hdr(u8 nexthdr)
Definition: ip6_packet.h:509
static ip46_address_t to_ip46(u32 is_ipv6, u8 *buf)
Definition: ip6_packet.h:113
#define ASSERT(truth)
#define ip46_address_set_ip4(ip46, ip)
Definition: ip6_packet.h:90
ip46_type_t
Definition: ip6_packet.h:70
static void ip6_addr_fib_init(ip6_address_fib_t *addr_fib, const ip6_address_t *address, u32 fib_index)
Definition: ip6_packet.h:125
static u8 ip6_traffic_class(const ip6_header_t *i)
Definition: ip6_packet.h:382
ip6_multicast_link_local_group_id_t
Definition: ip6_packet.h:164
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:321
static uword ip6_address_is_equal(const ip6_address_t *a, const ip6_address_t *b)
Definition: ip6_packet.h:235
static_always_inline void ip46_address_set_ip6(ip46_address_t *dst, const ip6_address_t *src)
Definition: ip6_packet.h:106
static uword ip6_address_is_multicast(const ip6_address_t *a)
Definition: ip6_packet.h:172
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:365
u16 payload_length
Definition: ip6_packet.h:369
static uword ip6_address_is_global_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:335
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:195
u64 uword
Definition: types.h:112
static void ip6_address_mask_from_width(ip6_address_t *a, u32 width)
Definition: ip6_packet.h:279
static uword ip6_address_is_unspecified(const ip6_address_t *a)
Definition: ip6_packet.h:305
static void ip6_tcp_reply_x1(ip6_header_t *ip0, tcp_header_t *tcp0)
Definition: ip6_packet.h:426
u16 as_u16[8]
Definition: ip6_packet.h:49
static void ip6_multicast_ethernet_address(u8 *ethernet_address, u32 group_id)
Definition: ip6_packet.h:224
static uword ip6_is_solicited_node_multicast_address(const ip6_address_t *a)
Definition: ip6_packet.h:342
ip6_address_t dst_address
Definition: ip6_packet.h:378
static void ip6_set_reserved_multicast_address(ip6_address_t *a, ip6_multicast_address_scope_t scope, u16 id)
Definition: ip6_packet.h:185