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 *);
44 ip_address_t tmp, *p_tmp = &tmp;
46 clib_memset (p_tmp, 0, sizeof (*p_tmp));
47 if (unformat (input, "%U", unformat_ip4_address, &ip_addr_v4 (p_tmp)))
48 ip_addr_version (p_tmp) = AF_IP4;
49 else if (unformat_user (input, unformat_ip6_address, &ip_addr_v6 (p_tmp)))
50 ip_addr_version (p_tmp) = AF_IP6;
58 format_ip_prefix (u8 * s, va_list * args)
60 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
61 return format (s, "%U/%d", format_ip_address, &ip_prefix_addr (a),
66 unformat_ip_prefix (unformat_input_t * input, va_list * args)
68 ip_prefix_t *a = va_arg (*args, ip_prefix_t *);
69 /* %d writes more than a u8 */
71 if (unformat (input, "%U/%d", unformat_ip_address, &ip_prefix_addr (a),
74 ip_prefix_len (a) = plen;
75 if ((ip_prefix_version (a) == AF_IP4 && 32 < ip_prefix_len (a)) ||
76 (ip_prefix_version (a) == AF_IP6 && 128 < ip_prefix_len (a)))
78 clib_warning ("Prefix length to big: %d!", ip_prefix_len (a));
81 ip_prefix_normalize (a);
89 ip_address_size (const ip_address_t * a)
91 switch (ip_addr_version (a))
94 return sizeof (ip4_address_t);
97 return sizeof (ip6_address_t);
104 ip_address_is_zero (const ip_address_t * ip)
106 switch (ip_addr_version (ip))
109 return (ip_addr_v4 (ip).as_u32 == 0);
111 return (ip_addr_v6 (ip).as_u64[0] == 0 &&
112 ip_addr_v6 (ip).as_u64[1] == 0);
119 ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2)
122 if (ip_addr_version (ip1) != ip_addr_version (ip2))
124 res = ip46_address_cmp (&ip_addr_46 (ip1), &ip_addr_46 (ip2));
135 ip_address_copy (ip_address_t * dst, const ip_address_t * src)
137 if (AF_IP4 == ip_addr_version (src))
139 /* don't copy any garbage from the union */
140 clib_memset (dst, 0, sizeof (*dst));
141 ip_addr_v4 (dst) = ip_addr_v4 (src);
142 dst->version = AF_IP4;
146 clib_memcpy (dst, src, sizeof (ip_address_t));
151 ip_addr_bytes (ip_address_t * ip)
156 return (u8 *) & ip_addr_v4 (ip);
158 return (u8 *) & ip_addr_v6 (ip);
166 ip_address_copy_addr (void *dst, const ip_address_t * src)
168 switch (src->version)
171 clib_memcpy (dst, &ip_addr_v4 (src), ip_address_size (src));
174 clib_memcpy (dst, &ip_addr_v6 (src), ip_address_size (src));
180 ip_version_to_size (ip_address_family_t af)
185 return sizeof (ip4_address_t);
188 return sizeof (ip6_address_t);
195 ip_address_family_to_link_type (ip_address_family_t af)
200 return (VNET_LINK_IP4);
202 return (VNET_LINK_IP6);
205 return (VNET_LINK_IP4);
209 ip_address_set (ip_address_t *dst, const void *src,
210 ip_address_family_t version)
212 ip_addr_version (dst) = version;
217 ip_addr_v4 (dst) = *(ip4_address_t *) src;
220 ip_addr_v6 (dst) = *(ip6_address_t *) src;
226 ip_address_family_to_fib_proto (ip_address_family_t af)
231 return (FIB_PROTOCOL_IP4);
233 return (FIB_PROTOCOL_IP6);
236 return (FIB_PROTOCOL_IP4);
240 ip_address_family_from_fib_proto (fib_protocol_t fp)
244 case FIB_PROTOCOL_IP4:
246 case FIB_PROTOCOL_IP6:
248 case FIB_PROTOCOL_MPLS:
255 ip_address_to_46 (const ip_address_t * addr, ip46_address_t * a)
257 *a = ip_addr_46 (addr);
258 return (ip_address_family_to_fib_proto (ip_addr_version (addr)));
262 ip_address_from_46 (const ip46_address_t * nh,
263 fib_protocol_t fproto, ip_address_t * ip)
265 ip_addr_46 (ip) = *nh;
266 ip_addr_version (ip) = ip_address_family_from_fib_proto (fproto);
270 ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen)
281 mask = pow2_mask (preflen) << (32 - preflen);
282 mask = clib_host_to_net_u32 (mask);
283 ip4->data_u32 &= mask;
287 ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen)
295 clib_memset (mask_6, 0, sizeof (mask_6));
304 m = (u32 *) & mask_6[0];
306 for (j = 0; j < i0; j++)
313 m[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
316 for (j = 0; j < sizeof (mask_6); j++)
318 ip6->as_u8[j] &= mask_6[j];
323 ip_prefix_normalize (ip_prefix_t * a)
325 u8 preflen = ip_prefix_len (a);
327 switch (ip_prefix_version (a))
330 ip_prefix_normalize_ip4 (&ip_prefix_v4 (a), preflen);
334 ip_prefix_normalize_ip6 (&ip_prefix_v6 (a), preflen);
343 ip_prefix_copy (void *dst, void *src)
345 clib_memcpy (dst, src, sizeof (ip_prefix_t));
349 ip_prefix_cmp (const ip_prefix_t *ipp1, const ip_prefix_t *ipp2)
351 ip_prefix_t p1 = *ipp1, p2 = *ipp2;
354 ip_prefix_normalize (&p1);
355 ip_prefix_normalize (&p2);
357 cmp = ip_address_cmp (&ip_prefix_addr (&p1), &ip_prefix_addr (&p2));
360 if (ip_prefix_len (&p1) < ip_prefix_len (&p2))
366 if (ip_prefix_len (&p1) > ip_prefix_len (&p2))
374 ip4_prefix_validate (const ip_prefix_t * ip)
376 ip4_address_t ip4_addr, ip4_mask;
378 if (ip_prefix_len (ip) > 32)
381 ip4_addr = ip_prefix_v4 (ip);
382 ip4_preflen_to_mask (ip_prefix_len (ip), &ip4_mask);
384 return ((ip4_addr.as_u32 & ip4_mask.as_u32) == ip4_addr.as_u32);
388 ip6_prefix_validate (const ip_prefix_t * ip)
390 ip6_address_t ip6_addr, ip6_mask;
392 if (ip_prefix_len (ip) > 128)
395 ip6_addr = ip_prefix_v6 (ip);
396 ip6_preflen_to_mask (ip_prefix_len (ip), &ip6_mask);
398 return (((ip6_addr.as_u64[0] & ip6_mask.as_u64[0]) == ip6_addr.as_u64[0]) &&
399 ((ip6_addr.as_u64[1] & ip6_mask.as_u64[1]) == ip6_addr.as_u64[1]));
403 ip_prefix_validate (const ip_prefix_t * ip)
405 switch (ip_prefix_version (ip))
408 return (ip4_prefix_validate (ip));
410 return (ip6_prefix_validate (ip));
417 ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
419 ASSERT (preflen <= 32);
423 ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
427 ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
429 ASSERT (preflen <= 128);
435 else if (preflen <= 64)
438 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
443 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
447 ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
452 ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
456 ip4_mask_to_preflen (ip4_address_t * mask)
458 if (mask->as_u32 == 0)
460 return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
464 ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
468 not_mask = (1 << (32 - plen)) - 1;
469 res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
473 ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
480 else if (pref_len <= 64)
483 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
488 mask->as_u64[0] = 0xffffffffffffffffL;
490 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
495 ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
501 res->as_u64[0] = 0xffffffffffffffffL;
502 res->as_u64[1] = 0xffffffffffffffffL;
506 not_mask = ((u64) 1 << (64 - plen)) - 1;
507 res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
508 res->as_u64[1] = 0xffffffffffffffffL;
512 not_mask = ((u64) 1 << (128 - plen)) - 1;
513 res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
518 ip6_mask_to_preflen (ip6_address_t * mask)
520 if (mask->as_u64[1] != 0)
521 return 128 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
522 if (mask->as_u64[0] != 0)
523 return 64 - log2_first_set (clib_net_to_host_u64 (mask->as_u64[0]));
528 * fd.io coding-style-patch-verification: ON
531 * eval: (c-set-style "gnu")