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 if (unformat (input, "%U/%d", unformat_ip_address, &ip_prefix_addr (a),
70 if ((ip_prefix_version (a) == AF_IP4 && 32 < ip_prefix_len (a)) ||
71 (ip_prefix_version (a) == AF_IP6 && 128 < ip_prefix_len (a)))
73 clib_warning ("Prefix length to big: %d!", ip_prefix_len (a));
76 ip_prefix_normalize (a);
84 ip_address_size (const ip_address_t * a)
86 switch (ip_addr_version (a))
89 return sizeof (ip4_address_t);
92 return sizeof (ip6_address_t);
99 ip_address_is_zero (const ip_address_t * ip)
101 switch (ip_addr_version (ip))
104 return (ip_addr_v4 (ip).as_u32 == 0);
106 return (ip_addr_v6 (ip).as_u64[0] == 0 &&
107 ip_addr_v6 (ip).as_u64[1] == 0);
114 ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2)
117 if (ip_addr_version (ip1) != ip_addr_version (ip2))
119 res = ip46_address_cmp (&ip_addr_46 (ip1), &ip_addr_46 (ip2));
130 ip_address_copy (ip_address_t * dst, const ip_address_t * src)
132 if (AF_IP4 == ip_addr_version (src))
134 /* don't copy any garbage from the union */
135 clib_memset (dst, 0, sizeof (*dst));
136 ip_addr_v4 (dst) = ip_addr_v4 (src);
137 dst->version = AF_IP4;
141 clib_memcpy (dst, src, sizeof (ip_address_t));
146 ip_addr_bytes (ip_address_t * ip)
151 return (u8 *) & ip_addr_v4 (ip);
153 return (u8 *) & ip_addr_v6 (ip);
161 ip_address_copy_addr (void *dst, const ip_address_t * src)
163 switch (src->version)
166 clib_memcpy (dst, &ip_addr_v4 (src), ip_address_size (src));
169 clib_memcpy (dst, &ip_addr_v6 (src), ip_address_size (src));
175 ip_version_to_size (ip_address_family_t af)
180 return sizeof (ip4_address_t);
183 return sizeof (ip6_address_t);
190 ip_address_family_to_link_type (ip_address_family_t af)
195 return (VNET_LINK_IP4);
197 return (VNET_LINK_IP6);
200 return (VNET_LINK_IP4);
205 ip_address_set (ip_address_t * dst, const void *src, u8 version)
207 ip_addr_version (dst) = version;
212 ip_addr_v4 (dst) = *(ip4_address_t *) src;
215 ip_addr_v6 (dst) = *(ip6_address_t *) src;
221 ip_address_family_to_fib_proto (ip_address_family_t af)
226 return (FIB_PROTOCOL_IP4);
228 return (FIB_PROTOCOL_IP6);
231 return (FIB_PROTOCOL_IP4);
235 ip_address_family_from_fib_proto (fib_protocol_t fp)
239 case FIB_PROTOCOL_IP4:
241 case FIB_PROTOCOL_IP6:
243 case FIB_PROTOCOL_MPLS:
250 ip_address_to_46 (const ip_address_t * addr, ip46_address_t * a)
252 *a = ip_addr_46 (addr);
253 return (ip_address_family_to_fib_proto (ip_addr_version (addr)));
257 ip_address_from_46 (const ip46_address_t * nh,
258 fib_protocol_t fproto, ip_address_t * ip)
260 ip_addr_46 (ip) = *nh;
261 ip_addr_version (ip) = ip_address_family_from_fib_proto (fproto);
265 ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen)
276 mask = pow2_mask (preflen) << (32 - preflen);
277 mask = clib_host_to_net_u32 (mask);
278 ip4->data_u32 &= mask;
282 ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen)
290 clib_memset (mask_6, 0, sizeof (mask_6));
299 m = (u32 *) & mask_6[0];
301 for (j = 0; j < i0; j++)
308 m[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
311 for (j = 0; j < sizeof (mask_6); j++)
313 ip6->as_u8[j] &= mask_6[j];
318 ip_prefix_normalize (ip_prefix_t * a)
320 u8 preflen = ip_prefix_len (a);
322 switch (ip_prefix_version (a))
325 ip_prefix_normalize_ip4 (&ip_prefix_v4 (a), preflen);
329 ip_prefix_normalize_ip6 (&ip_prefix_v6 (a), preflen);
338 ip_prefix_copy (void *dst, void *src)
340 clib_memcpy (dst, src, sizeof (ip_prefix_t));
344 ip_prefix_cmp (ip_prefix_t * p1, ip_prefix_t * p2)
348 ip_prefix_normalize (p1);
349 ip_prefix_normalize (p2);
351 cmp = ip_address_cmp (&ip_prefix_addr (p1), &ip_prefix_addr (p2));
354 if (ip_prefix_len (p1) < ip_prefix_len (p2))
360 if (ip_prefix_len (p1) > ip_prefix_len (p2))
368 ip4_prefix_validate (const ip_prefix_t * ip)
370 ip4_address_t ip4_addr, ip4_mask;
372 if (ip_prefix_len (ip) > 32)
375 ip4_addr = ip_prefix_v4 (ip);
376 ip4_preflen_to_mask (ip_prefix_len (ip), &ip4_mask);
378 return ((ip4_addr.as_u32 & ip4_mask.as_u32) == ip4_addr.as_u32);
382 ip6_prefix_validate (const ip_prefix_t * ip)
384 ip6_address_t ip6_addr, ip6_mask;
386 if (ip_prefix_len (ip) > 128)
389 ip6_addr = ip_prefix_v6 (ip);
390 ip6_preflen_to_mask (ip_prefix_len (ip), &ip6_mask);
392 return (((ip6_addr.as_u64[0] & ip6_mask.as_u64[0]) == ip6_addr.as_u64[0]) &&
393 ((ip6_addr.as_u64[1] & ip6_mask.as_u64[1]) == ip6_addr.as_u64[1]));
397 ip_prefix_validate (const ip_prefix_t * ip)
399 switch (ip_prefix_version (ip))
402 return (ip4_prefix_validate (ip));
404 return (ip6_prefix_validate (ip));
411 ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
413 ASSERT (preflen <= 32);
417 ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
421 ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
423 ASSERT (preflen <= 128);
429 else if (preflen <= 64)
432 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
437 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
441 ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
446 ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
450 ip4_mask_to_preflen (ip4_address_t * mask)
452 if (mask->as_u32 == 0)
454 return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
458 ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
462 not_mask = (1 << (32 - plen)) - 1;
463 res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
467 ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
474 else if (pref_len <= 64)
477 clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
482 mask->as_u64[0] = 0xffffffffffffffffL;
484 clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
489 ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
495 res->as_u64[0] = 0xffffffffffffffffL;
496 res->as_u64[1] = 0xffffffffffffffffL;
500 not_mask = ((u64) 1 << (64 - plen)) - 1;
501 res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
502 res->as_u64[1] = 0xffffffffffffffffL;
506 not_mask = ((u64) 1 << (128 - plen)) - 1;
507 res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
512 ip6_mask_to_preflen (ip6_address_t * mask)
515 if (mask->as_u64[0] == 0 && mask->as_u64[1] == 0)
517 first1 = log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
518 first0 = 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")