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 &&
35 clib_net_to_host_u64 (ip46_address->as_u64[1]) == 1);
39 ip4_is_local_host (ip4_address_t * ip4_address)
41 return (ip4_address->as_u8[0] == 127);
45 ip6_is_local_host (ip6_address_t * ip6_address)
47 return (ip6_address->as_u64[0] == 0 &&
48 clib_net_to_host_u64 (ip6_address->as_u64[1]) == 1);
52 * Checks that an ip is local to the requested fib
55 ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4)
58 fib_entry_flag_t flags;
61 /* Check if requester is local */
65 prefix.fp_proto = FIB_PROTOCOL_IP4;
70 prefix.fp_proto = FIB_PROTOCOL_IP6;
73 clib_memcpy_fast (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
74 fei = fib_table_lookup (fib_index, &prefix);
75 flags = fib_entry_get_flags (fei);
77 return (flags & FIB_ENTRY_FLAG_LOCAL);
81 ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4)
84 dst->ip4.as_u32 = src->ip4.as_u32;
86 clib_memcpy_fast (&dst->ip6, &src->ip6, sizeof (ip6_address_t));
90 ip_set (ip46_address_t * dst, void *src, u8 is_ip4)
93 dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32;
95 clib_memcpy_fast (&dst->ip6, (ip6_address_t *) src,
96 sizeof (ip6_address_t));
100 ip_interface_has_address (u32 sw_if_index, ip46_address_t * ip, u8 is_ip4)
102 ip_interface_address_t *ia = 0;
106 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
109 foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ ,
111 ip4 = ip_interface_address_get_address (lm4, ia);
112 if (ip4_address_compare (ip4, &ip->ip4) == 0)
119 ip_lookup_main_t *lm6 = &ip6_main.lookup_main;
122 foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ ,
124 ip6 = ip_interface_address_get_address (lm6, ia);
125 if (ip6_address_compare (ip6, &ip->ip6) == 0)
134 ip_interface_get_first_ip (u32 sw_if_index, u8 is_ip4)
136 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
137 ip_lookup_main_t *lm6 = &ip6_main.lookup_main;
138 ip_interface_address_t *ia = 0;
143 foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ ,
145 return ip_interface_address_get_address (lm4, ia);
152 foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ ,
155 rv = ip_interface_address_get_address (lm6, ia);
156 /* Trying to use a link-local ip6 src address is a fool's errand */
157 if (!ip6_address_is_link_local_unicast (rv))
167 format_ip_address_family (u8 * s, va_list * args)
169 ip_address_family_t af = va_arg (*args, int); // int promo ip_address_family_t);
174 return (format (s, "ip4"));
176 return (format (s, "ip6"));
179 return (format (s, "unknown"));
183 unformat_ip_address_family (unformat_input_t * input, va_list * args)
185 ip_address_family_t *af = va_arg (*args, ip_address_family_t *);
187 if (unformat (input, "ip4") || unformat (input, "ipv4") ||
188 unformat (input, "IP4") || unformat (input, "IPv4"))
193 else if (unformat (input, "ip6") || unformat (input, "ipv6") ||
194 unformat (input, "IP6") || unformat (input, "IPv6"))
203 format_ip_dscp (u8 * s, va_list * va)
205 ip_dscp_t dscp = va_arg (*va, u32); // int promotion of u8
211 return (format (s, "%s", #v));
216 return (format (s, "unknown"));
220 format_ip_ecn (u8 * s, va_list * va)
222 ip_ecn_t ecn = va_arg (*va, u32); // int promotion of u8
228 return (format (s, "%s", #v));
233 return (format (s, "unknown"));
237 * fd.io coding-style-patch-verification: ON
240 * eval: (c-set-style "gnu")