/* * Copyright (c) 2017 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/ip/ip.h> #include <vnet/fib/fib_table.h> u8 ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4) { if (is_ip4) return (ip46_address->ip4.as_u32 == 0); else return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0); } u8 ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4) { if (is_ip4) return (ip46_address->ip4.as_u8[0] == 127); else return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 1); } /** * Checks that an ip is local to the requested fib */ u8 ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4) { fib_node_index_t fei; fib_entry_flag_t flags; fib_prefix_t prefix; /* Check if requester is local */ if (is_ip4) { prefix.fp_len = 32; prefix.fp_proto = FIB_PROTOCOL_IP4; } else { prefix.fp_len = 128; prefix.fp_proto = FIB_PROTOCOL_IP6; } clib_memcpy (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t)); fei = fib_table_lookup (0, &prefix); flags = fib_entry_get_flags (fei); return (flags & FIB_ENTRY_FLAG_LOCAL); } void ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4) { if (is_ip4) dst->ip4.as_u32 = src->ip4.as_u32; else clib_memcpy (&dst->ip6, &src->ip6, sizeof (ip6_address_t)); } void ip_set (ip46_address_t * dst, void *src, u8 is_ip4) { if (is_ip4) dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32; else clib_memcpy (&dst->ip6, (ip6_address_t *) src, sizeof (ip6_address_t)); } u8 ip_interface_has_address (u32 sw_if_index, ip46_address_t * ip, u8 is_ip4) { ip_interface_address_t *ia = 0; if (is_ip4) { ip_lookup_main_t *lm4 = &ip4_main.lookup_main; ip4_address_t *ip4; /* *INDENT-OFF* */ foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ , ({ ip4 = ip_interface_address_get_address (lm4, ia); if (ip4_address_compare (ip4, &ip->ip4) == 0) return 1; })); /* *INDENT-ON* */ } else { ip_lookup_main_t *lm6 = &ip6_main.lookup_main; ip6_address_t *ip6; /* *INDENT-OFF* */ foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ , ({ ip6 = ip_interface_address_get_address (lm6, ia); if (ip6_address_compare (ip6, &ip->ip6) == 0) return 1; })); /* *INDENT-ON* */ } return 0; } void * ip_interface_get_first_ip (u32 sw_if_index, u8 is_ip4) { ip_lookup_main_t *lm4 = &ip4_main.lookup_main; ip_lookup_main_t *lm6 = &ip6_main.lookup_main; ip_interface_address_t *ia = 0; if (is_ip4) { /* *INDENT-OFF* */ foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* unnumbered */ , ({ return ip_interface_address_get_address (lm4, ia); })); /* *INDENT-ON* */ } else { /* *INDENT-OFF* */ foreach_ip_interface_address (lm6, ia, sw_if_index, 1 /* unnumbered */ , ({ ip6_address_t *rv; rv = ip_interface_address_get_address (lm6, ia); /* Trying to use a link-local ip6 src address is a fool's errand */ if (!ip6_address_is_link_local_unicast (rv)) return rv; })); /* *INDENT-ON* */ } return 0; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */