| Florin Coras | cea194d | 2017-10-02 00:18:51 -0700 | [diff] [blame] | 1 | /* |
| 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: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 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. |
| 14 | */ |
| 15 | |
| 16 | #include <vnet/ip/ip.h> |
| 17 | #include <vnet/fib/fib_table.h> |
| 18 | |
| 19 | u8 |
| 20 | ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4) |
| 21 | { |
| 22 | if (is_ip4) |
| 23 | return (ip46_address->ip4.as_u32 == 0); |
| 24 | else |
| 25 | return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0); |
| 26 | } |
| 27 | |
| 28 | u8 |
| 29 | ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4) |
| 30 | { |
| 31 | if (is_ip4) |
| 32 | return (ip46_address->ip4.as_u8[0] == 127); |
| 33 | else |
| 34 | return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 1); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Checks that an ip is local to the requested fib |
| 39 | */ |
| 40 | u8 |
| 41 | ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4) |
| 42 | { |
| 43 | fib_node_index_t fei; |
| 44 | fib_entry_flag_t flags; |
| 45 | fib_prefix_t prefix; |
| 46 | |
| 47 | /* Check if requester is local */ |
| 48 | if (is_ip4) |
| 49 | { |
| 50 | prefix.fp_len = 32; |
| 51 | prefix.fp_proto = FIB_PROTOCOL_IP4; |
| 52 | } |
| 53 | else |
| 54 | { |
| 55 | prefix.fp_len = 128; |
| 56 | prefix.fp_proto = FIB_PROTOCOL_IP6; |
| 57 | } |
| 58 | |
| 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); |
| 62 | |
| 63 | return (flags & FIB_ENTRY_FLAG_LOCAL); |
| 64 | } |
| 65 | |
| 66 | u8 |
| 67 | ip_interface_has_address (u32 sw_if_index, ip46_address_t * ip, u8 is_ip4) |
| 68 | { |
| 69 | ip_interface_address_t *ia = 0; |
| 70 | |
| 71 | if (is_ip4) |
| 72 | { |
| 73 | ip_lookup_main_t *lm4 = &ip4_main.lookup_main; |
| 74 | ip4_address_t *ip4; |
| 75 | /* *INDENT-OFF* */ |
| 76 | foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ , |
| 77 | ({ |
| 78 | ip4 = ip_interface_address_get_address (lm4, ia); |
| 79 | if (ip4_address_compare (ip4, &ip->ip4) == 0) |
| 80 | return 1; |
| 81 | })); |
| 82 | /* *INDENT-ON* */ |
| 83 | } |
| 84 | else |
| 85 | { |
| 86 | ip_lookup_main_t *lm6 = &ip6_main.lookup_main; |
| 87 | ip6_address_t *ip6; |
| 88 | /* *INDENT-OFF* */ |
| 89 | foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ , |
| 90 | ({ |
| 91 | ip6 = ip_interface_address_get_address (lm6, ia); |
| 92 | if (ip6_address_compare (ip6, &ip->ip6) == 0) |
| 93 | return 1; |
| 94 | })); |
| 95 | /* *INDENT-ON* */ |
| 96 | } |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | void |
| 101 | ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4) |
| 102 | { |
| 103 | if (is_ip4) |
| 104 | dst->ip4.as_u32 = src->ip4.as_u32; |
| 105 | else |
| 106 | clib_memcpy (&dst->ip6, &src->ip6, sizeof (ip6_address_t)); |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | ip_set (ip46_address_t * dst, void *src, u8 is_ip4) |
| 111 | { |
| 112 | if (is_ip4) |
| 113 | dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32; |
| 114 | else |
| 115 | clib_memcpy (&dst->ip6, (ip6_address_t *) src, sizeof (ip6_address_t)); |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * fd.io coding-style-patch-verification: ON |
| 120 | * |
| 121 | * Local Variables: |
| 122 | * eval: (c-set-style "gnu") |
| 123 | * End: |
| 124 | */ |