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 clib_memset (a, 0, sizeof (*a));
46 if (unformat (input, "%U", unformat_ip4_address, &ip_addr_v4 (a)))
47 ip_addr_version (a) = AF_IP4;
48 else if (unformat_user (input, unformat_ip6_address, &ip_addr_v6 (a)))
49 ip_addr_version (a) = AF_IP6;
56 format_ip_prefix (u8 * s, va_list * args)
58 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
59 return format (s, "%U/%d", format_ip_address, &ip_prefix_addr (a),
64 unformat_ip_prefix (unformat_input_t * input, va_list * args)
66 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
67 /* %d writes more than a u8 */
69 if (unformat (input, "%U/%d", unformat_ip_address, &ip_prefix_addr (a),
72 ip_prefix_len (a) = plen;
73 if ((ip_prefix_version (a) == AF_IP4 && 32 < ip_prefix_len (a)) ||
74 (ip_prefix_version (a) == AF_IP6 && 128 < ip_prefix_len (a)))
76 clib_warning ("Prefix length to big: %d!", ip_prefix_len (a));
79 ip_prefix_normalize (a);
87 ip_address_size (const ip_address_t * a)
89 switch (ip_addr_version (a))
92 return sizeof (ip4_address_t);
95 return sizeof (ip6_address_t);
102 ip_address_is_zero (const ip_address_t * ip)
104 switch (ip_addr_version (ip))
107 return (ip_addr_v4 (ip).as_u32 == 0);
109 return (ip_addr_v6 (ip).as_u64[0] == 0 &&
110 ip_addr_v6 (ip).as_u64[1] == 0);
117 ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2)
120 if (ip_addr_version (ip1) != ip_addr_version (ip2))
122 res = ip46_address_cmp (&ip_addr_46 (ip1), &ip_addr_46 (ip2));
133 ip_address_copy (ip_address_t * dst, const ip_address_t * src)
135 if (AF_IP4 == ip_addr_version (src))
137 /* don't copy any garbage from the union */
138 clib_memset (dst, 0, sizeof (*dst));
139 ip_addr_v4 (dst) = ip_addr_v4 (src);
140 dst->version = AF_IP4;
144 clib_memcpy (dst, src, sizeof (ip_address_t));
149 ip_addr_bytes (ip_address_t * ip)
154 return (u8 *) & ip_addr_v4 (ip);
156 return (u8 *) & ip_addr_v6 (ip);
164 ip_address_copy_addr (void *dst, const ip_address_t * src)
166 switch (src->version)
169 clib_memcpy (dst, &ip_addr_v4 (src), ip_address_size (src));
172 clib_memcpy (dst, &ip_addr_v6 (src), ip_address_size (src));
178 ip_version_to_size (ip_address_family_t af)
183 return sizeof (ip4_address_t);
186 return sizeof (ip6_address_t);
193 ip_address_family_to_link_type (ip_address_family_t af)
198 return (VNET_LINK_IP4);
200 return (VNET_LINK_IP6);
203 return (VNET_LINK_IP4);
208 ip_address_set (ip_address_t * dst, const void *src, u8 version)
210 ip_addr_version (dst) = version;
215 ip_addr_v4 (dst) = *(ip4_address_t *) src;
218 ip_addr_v6 (dst) = *(ip6_address_t *) src;
224 ip_address_family_to_fib_proto (ip_address_family_t af)
229 return (FIB_PROTOCOL_IP4);
231 return (FIB_PROTOCOL_IP6);
234 return (FIB_PROTOCOL_IP4);
238 ip_address_family_from_fib_proto (fib_protocol_t fp)
242 case FIB_PROTOCOL_IP4:
244 case FIB_PROTOCOL_IP6:
246 case FIB_PROTOCOL_MPLS:
253 ip_address_to_46 (const ip_address_t * addr, ip46_address_t * a)
255 *a = ip_addr_46 (addr);
256 return (ip_address_family_to_fib_proto (ip_addr_version (addr)));
260 ip_address_from_46 (const ip46_address_t * nh,
261 fib_protocol_t fproto, ip_address_t * ip)
263 ip_addr_46 (ip) = *nh;
264 ip_addr_version (ip) = ip_address_family_from_fib_proto (fproto);
268 * convert from a IP address to a FIB prefix
271 ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
273 if (addr->version == AF_IP4)
276 prefix->fp_proto = FIB_PROTOCOL_IP4;
277 clib_memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
278 memcpy (&prefix->fp_addr.ip4, &addr->ip.ip4,
279 sizeof (prefix->fp_addr.ip4));
283 prefix->fp_len = 128;
284 prefix->fp_proto = FIB_PROTOCOL_IP6;
285 memcpy (&prefix->fp_addr.ip6, &addr->ip.ip6,
286 sizeof (prefix->fp_addr.ip6));
288 prefix->___fp___pad = 0;
292 ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen)
303 mask = pow2_mask (preflen) << (32 - preflen);
304 mask = clib_host_to_net_u32 (mask);
305 ip4->data_u32 &= mask;
309 ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen)
317 clib_memset (mask_6, 0, sizeof (mask_6));
326 m = (u32 *) & mask_6[0];
328 for (j = 0; j < i0; j++)
335 m[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
338 for (j = 0; j < sizeof (mask_6); j++)
340 ip6->as_u8[j] &= mask_6[j];
345 ip_prefix_normalize (ip_prefix_t * a)
347 u8 preflen = ip_prefix_len (a);
349 switch (ip_prefix_version (a))
352 ip_prefix_normalize_ip4 (&ip_prefix_v4 (a), preflen);
356 ip_prefix_normalize_ip6 (&ip_prefix_v6 (a), preflen);
365 ip_prefix_copy (void *dst, void *src)
367 clib_memcpy (dst, src, sizeof (ip_prefix_t));
371 ip_prefix_cmp (ip_prefix_t * p1, ip_prefix_t * p2)
375 ip_prefix_normalize (p1);
376 ip_prefix_normalize (p2);
378 cmp = ip_address_cmp (&ip_prefix_addr (p1), &ip_prefix_addr (p2));
381 if (ip_prefix_len (p1) < ip_prefix_len (p2))
387 if (ip_prefix_len (p1) > ip_prefix_len (p2))
395 * convert from a LISP to a FIB prefix
398 ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
399 fib_prefix_t * fib_prefix)
401 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
402 fib_prefix->fp_len = ip_prefix->len;
406 ip4_prefix_validate (const ip_prefix_t * ip)
408 ip4_address_t ip4_addr, ip4_mask;
410 if (ip_prefix_len (ip) > 32)
413 ip4_addr = ip_prefix_v4 (ip);
414 ip4_preflen_to_mask (ip_prefix_len (ip), &ip4_mask);
416 return ((ip4_addr.as_u32 & ip4_mask.as_u32) == ip4_addr.as_u32);
420 ip6_prefix_validate (const ip_prefix_t * ip)
422 ip6_address_t ip6_addr, ip6_mask;
424 if (ip_prefix_len (ip) > 128)
427 ip6_addr = ip_prefix_v6 (ip);
428 ip6_preflen_to_mask (ip_prefix_len (ip), &ip6_mask);
430 return (((ip6_addr.as_u64[0] & ip6_mask.as_u64[0]) == ip6_addr.as_u64[0]) &&
431 ((ip6_addr.as_u64[1] & ip6_mask.as_u64[1]) == ip6_addr.as_u64[1]));
435 ip_prefix_validate (const ip_prefix_t * ip)
437 switch (ip_prefix_version (ip))
440 return (ip4_prefix_validate (ip));
442 return (ip6_prefix_validate (ip));
449 ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
451 ASSERT (preflen <= 32);
455 ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
459 ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
461 ASSERT (preflen <= 128);
467 else if (preflen <= 64)
470 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
475 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
479 ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
484 ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
488 ip4_mask_to_preflen (ip4_address_t * mask)
490 if (mask->as_u32 == 0)
492 return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
496 ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
500 not_mask = (1 << (32 - plen)) - 1;
501 res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
505 ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
512 else if (pref_len <= 64)
515 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
520 mask->as_u64[0] = 0xffffffffffffffffL;
522 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
527 ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
533 res->as_u64[0] = 0xffffffffffffffffL;
534 res->as_u64[1] = 0xffffffffffffffffL;
538 not_mask = ((u64) 1 << (64 - plen)) - 1;
539 res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
540 res->as_u64[1] = 0xffffffffffffffffL;
544 not_mask = ((u64) 1 << (128 - plen)) - 1;
545 res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
550 ip6_mask_to_preflen (ip6_address_t * mask)
552 if (mask->as_u64[1] != 0)
553 return 128 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
554 if (mask->as_u64[0] != 0)
555 return 64 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[0]));
560 * fd.io coding-style-patch-verification: ON
563 * eval: (c-set-style "gnu")