/* * Copyright (c) 2016 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 <lb/util.h> void ip46_prefix_normalize(ip46_address_t *prefix, u8 plen) { if (plen == 0) { prefix->as_u64[0] = 0; prefix->as_u64[1] = 0; } else if (plen <= 64) { prefix->as_u64[0] &= clib_host_to_net_u64(0xffffffffffffffffL << (64 - plen)); prefix->as_u64[1] = 0; } else { prefix->as_u64[1] &= clib_host_to_net_u64(0xffffffffffffffffL << (128 - plen)); } } uword unformat_ip46_prefix (unformat_input_t * input, va_list * args) { ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); u8 *len = va_arg (*args, u8 *); ip46_type_t type = va_arg (*args, ip46_type_t); u32 l; if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) { if (l > 32) return 0; *len = l + 96; ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0; } else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) { if (l > 128) return 0; *len = l; } else { return 0; } return 1; } u8 *format_ip46_prefix (u8 * s, va_list * args) { ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); u32 len = va_arg (*args, u32); //va_arg cannot use u8 or u16 ip46_type_t type = va_arg (*args, ip46_type_t); int is_ip4 = 0; if (type == IP46_TYPE_IP4) is_ip4 = 1; else if (type == IP46_TYPE_IP6) is_ip4 = 0; else is_ip4 = (len >= 96) && ip46_address_is_ip4(ip46); return is_ip4 ? format(s, "%U/%d", format_ip4_address, &ip46->ip4, len - 96): format(s, "%U/%d", format_ip6_address, &ip46->ip6, len); }