2 * Copyright (c) 2016 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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 #include <vnet/ip/ip_types.h>
17 #include <vnet/ip/format.h>
18 #include <vnet/ip/ip.h>
21 format_ip_address (u8 * s, va_list * args)
23 ip_address_t *a = va_arg (*args, ip_address_t *);
24 u8 ver = ip_addr_version (a);
27 return format (s, "%U", format_ip4_address, &ip_addr_v4 (a));
29 else if (ver == AF_IP6)
31 return format (s, "%U", format_ip6_address, &ip_addr_v6 (a));
35 clib_warning ("Can't format IP version %d!", ver);
41 unformat_ip_address (unformat_input_t * input, va_list * args)
43 ip_address_t *a = va_arg (*args, ip_address_t *);
45 if (unformat_user (input, unformat_ip46_address, &ip_addr_46 (a),
49 ip46_address_is_ip4 (&ip_addr_46 (a)) ? AF_IP4 : AF_IP6;
57 format_ip_prefix (u8 * s, va_list * args)
59 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
60 return format (s, "%U/%d", format_ip_address, &ip_prefix_addr (a),
65 unformat_ip_prefix (unformat_input_t * input, va_list * args)
67 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
68 /* %d writes more than a u8 */
70 if (unformat (input, "%U/%d", unformat_ip_address, &ip_prefix_addr (a),
73 ip_prefix_len (a) = plen;
74 if ((ip_prefix_version (a) == AF_IP4 && 32 < ip_prefix_len (a)) ||
75 (ip_prefix_version (a) == AF_IP6 && 128 < ip_prefix_len (a)))
77 clib_warning ("Prefix length to big: %d!", ip_prefix_len (a));
80 ip_prefix_normalize (a);
88 ip_address_size (const ip_address_t * a)
90 switch (ip_addr_version (a))
93 return sizeof (ip4_address_t);
96 return sizeof (ip6_address_t);
103 ip_address_is_zero (const ip_address_t * ip)
105 switch (ip_addr_version (ip))
108 return (ip_addr_v4 (ip).as_u32 == 0);
110 return (ip_addr_v6 (ip).as_u64[0] == 0 &&
111 ip_addr_v6 (ip).as_u64[1] == 0);
118 ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2)
121 if (ip_addr_version (ip1) != ip_addr_version (ip2))
123 res = ip46_address_cmp (&ip_addr_46 (ip1), &ip_addr_46 (ip2));
134 ip_address_copy (ip_address_t * dst, const ip_address_t * src)
136 if (AF_IP4 == ip_addr_version (src))
138 /* don't copy any garbage from the union */
139 clib_memset (dst, 0, sizeof (*dst));
140 ip_addr_v4 (dst) = ip_addr_v4 (src);
141 dst->version = AF_IP4;
145 clib_memcpy (dst, src, sizeof (ip_address_t));
150 ip_addr_bytes (ip_address_t * ip)
155 return (u8 *) & ip_addr_v4 (ip);
157 return (u8 *) & ip_addr_v6 (ip);
165 ip_address_copy_addr (void *dst, const ip_address_t * src)
167 switch (src->version)
170 clib_memcpy (dst, &ip_addr_v4 (src), ip_address_size (src));
173 clib_memcpy (dst, &ip_addr_v6 (src), ip_address_size (src));
179 ip_version_to_size (ip_address_family_t af)
184 return sizeof (ip4_address_t);
187 return sizeof (ip6_address_t);
194 ip_address_family_to_link_type (ip_address_family_t af)
199 return (VNET_LINK_IP4);
201 return (VNET_LINK_IP6);
204 return (VNET_LINK_IP4);
209 ip_address_set (ip_address_t * dst, const void *src, u8 version)
211 ip_addr_version (dst) = version;
216 ip_addr_v4 (dst) = *(ip4_address_t *) src;
219 ip_addr_v6 (dst) = *(ip6_address_t *) src;
225 ip_address_family_to_fib_proto (ip_address_family_t af)
230 return (FIB_PROTOCOL_IP4);
232 return (FIB_PROTOCOL_IP6);
235 return (FIB_PROTOCOL_IP4);
239 ip_address_family_from_fib_proto (fib_protocol_t fp)
243 case FIB_PROTOCOL_IP4:
245 case FIB_PROTOCOL_IP6:
247 case FIB_PROTOCOL_MPLS:
254 ip_address_to_46 (const ip_address_t * addr, ip46_address_t * a)
256 *a = ip_addr_46 (addr);
257 return (ip_address_family_to_fib_proto (ip_addr_version (addr)));
261 ip_address_from_46 (const ip46_address_t * nh,
262 fib_protocol_t fproto, ip_address_t * ip)
264 ip_addr_46 (ip) = *nh;
265 ip_addr_version (ip) = ip_address_family_from_fib_proto (fproto);
269 ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen)
280 mask = pow2_mask (preflen) << (32 - preflen);
281 mask = clib_host_to_net_u32 (mask);
282 ip4->data_u32 &= mask;
286 ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen)
294 clib_memset (mask_6, 0, sizeof (mask_6));
303 m = (u32 *) & mask_6[0];
305 for (j = 0; j < i0; j++)
312 m[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
315 for (j = 0; j < sizeof (mask_6); j++)
317 ip6->as_u8[j] &= mask_6[j];
322 ip_prefix_normalize (ip_prefix_t * a)
324 u8 preflen = ip_prefix_len (a);
326 switch (ip_prefix_version (a))
329 ip_prefix_normalize_ip4 (&ip_prefix_v4 (a), preflen);
333 ip_prefix_normalize_ip6 (&ip_prefix_v6 (a), preflen);
342 ip_prefix_copy (void *dst, void *src)
344 clib_memcpy (dst, src, sizeof (ip_prefix_t));
348 ip_prefix_cmp (const ip_prefix_t *ipp1, const ip_prefix_t *ipp2)
350 ip_prefix_t p1 = *ipp1, p2 = *ipp2;
353 ip_prefix_normalize (&p1);
354 ip_prefix_normalize (&p2);
356 cmp = ip_address_cmp (&ip_prefix_addr (&p1), &ip_prefix_addr (&p2));
359 if (ip_prefix_len (&p1) < ip_prefix_len (&p2))
365 if (ip_prefix_len (&p1) > ip_prefix_len (&p2))
373 ip4_prefix_validate (const ip_prefix_t * ip)
375 ip4_address_t ip4_addr, ip4_mask;
377 if (ip_prefix_len (ip) > 32)
380 ip4_addr = ip_prefix_v4 (ip);
381 ip4_preflen_to_mask (ip_prefix_len (ip), &ip4_mask);
383 return ((ip4_addr.as_u32 & ip4_mask.as_u32) == ip4_addr.as_u32);
387 ip6_prefix_validate (const ip_prefix_t * ip)
389 ip6_address_t ip6_addr, ip6_mask;
391 if (ip_prefix_len (ip) > 128)
394 ip6_addr = ip_prefix_v6 (ip);
395 ip6_preflen_to_mask (ip_prefix_len (ip), &ip6_mask);
397 return (((ip6_addr.as_u64[0] & ip6_mask.as_u64[0]) == ip6_addr.as_u64[0]) &&
398 ((ip6_addr.as_u64[1] & ip6_mask.as_u64[1]) == ip6_addr.as_u64[1]));
402 ip_prefix_validate (const ip_prefix_t * ip)
404 switch (ip_prefix_version (ip))
407 return (ip4_prefix_validate (ip));
409 return (ip6_prefix_validate (ip));
416 ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
418 ASSERT (preflen <= 32);
422 ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
426 ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
428 ASSERT (preflen <= 128);
434 else if (preflen <= 64)
437 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
442 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
446 ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
451 ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
455 ip4_mask_to_preflen (ip4_address_t * mask)
457 if (mask->as_u32 == 0)
459 return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
463 ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
467 not_mask = (1 << (32 - plen)) - 1;
468 res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
472 ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
479 else if (pref_len <= 64)
482 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
487 mask->as_u64[0] = 0xffffffffffffffffL;
489 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
494 ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
500 res->as_u64[0] = 0xffffffffffffffffL;
501 res->as_u64[1] = 0xffffffffffffffffL;
505 not_mask = ((u64) 1 << (64 - plen)) - 1;
506 res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
507 res->as_u64[1] = 0xffffffffffffffffL;
511 not_mask = ((u64) 1 << (128 - plen)) - 1;
512 res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
517 ip6_mask_to_preflen (ip6_address_t * mask)
519 if (mask->as_u64[1] != 0)
520 return 128 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
521 if (mask->as_u64[0] != 0)
522 return 64 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[0]));
527 * fd.io coding-style-patch-verification: ON
530 * eval: (c-set-style "gnu")