2 * Copyright (c) 2017 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.h>
17 #include <vnet/fib/fib_table.h>
20 ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4)
23 return (ip46_address->ip4.as_u32 == 0);
25 return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0);
29 ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4)
32 return (ip46_address->ip4.as_u8[0] == 127);
34 return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 1);
38 * Checks that an ip is local to the requested fib
41 ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4)
44 fib_entry_flag_t flags;
47 /* Check if requester is local */
51 prefix.fp_proto = FIB_PROTOCOL_IP4;
56 prefix.fp_proto = FIB_PROTOCOL_IP6;
59 clib_memcpy (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
60 fei = fib_table_lookup (0, &prefix);
61 flags = fib_entry_get_flags (fei);
63 return (flags & FIB_ENTRY_FLAG_LOCAL);
67 ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4)
70 dst->ip4.as_u32 = src->ip4.as_u32;
72 clib_memcpy (&dst->ip6, &src->ip6, sizeof (ip6_address_t));
76 ip_set (ip46_address_t * dst, void *src, u8 is_ip4)
79 dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32;
81 clib_memcpy (&dst->ip6, (ip6_address_t *) src, sizeof (ip6_address_t));
85 ip_interface_has_address (u32 sw_if_index, ip46_address_t * ip, u8 is_ip4)
87 ip_interface_address_t *ia = 0;
91 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
94 foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ ,
96 ip4 = ip_interface_address_get_address (lm4, ia);
97 if (ip4_address_compare (ip4, &ip->ip4) == 0)
104 ip_lookup_main_t *lm6 = &ip6_main.lookup_main;
107 foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ ,
109 ip6 = ip_interface_address_get_address (lm6, ia);
110 if (ip6_address_compare (ip6, &ip->ip6) == 0)
119 ip_interface_get_first_ip (u32 sw_if_index, u8 is_ip4)
121 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
122 ip_lookup_main_t *lm6 = &ip6_main.lookup_main;
123 ip_interface_address_t *ia = 0;
128 foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ ,
130 return ip_interface_address_get_address (lm4, ia);
137 foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ ,
140 rv = ip_interface_address_get_address (lm6, ia);
141 /* Trying to use a link-local ip6 src address is a fool's errand */
142 if (!ip6_address_is_link_local_unicast (rv))
152 * fd.io coding-style-patch-verification: ON
155 * eval: (c-set-style "gnu")