/* $NetBSD: inet.h,v 1.2.6.1 2024/02/29 11:39:19 martin Exp $ */ /* inet.h Portable definitions for internet addresses */ /* * Copyright (C) 2004-2022 Internet Systems Consortium, Inc. ("ISC") * Copyright (c) 1996-2003 by Internet Software Consortium * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Internet Systems Consortium, Inc. * PO Box 360 * Newmarket, NH 03857 USA * * https://www.isc.org/ * */ /* An internet address of up to 128 bits. */ struct iaddr { unsigned len; unsigned char iabuf [16]; }; struct iaddrlist { struct iaddrlist *next; struct iaddr addr; }; /* struct iaddrmatch - used to compare a host IP against a subnet spec * * There is a space/speed tradeoff here implied by the use of a second * struct iaddr to hold the mask; while using an unsigned (byte!) to * represent the subnet prefix length would be more memory efficient, * it makes run-time mask comparisons more expensive. Since such * entries are used currently only in restricted circumstances * (wanting to reject a subnet), the decision is in favour of run-time * efficiency. */ struct iaddrmatch { struct iaddr addr; struct iaddr mask; }; /* its list ... */ struct iaddrmatchlist { struct iaddrmatchlist *next; struct iaddrmatch match; }; /* * Structure to store information about a CIDR network. */ struct iaddrcidrnet { struct iaddr lo_addr; int bits; }; struct iaddrcidrnetlist { struct iaddrcidrnetlist *next; struct iaddrcidrnet cidrnet; };