/* $Id: udp.h 62511 2016-07-22 19:12:58Z vboxsync $ */ /** @file * NAT - UDP protocol (declarations/defines). */ /* * Copyright (C) 2006-2016 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /* * This code is based on: * * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)udp.h 8.1 (Berkeley) 6/10/93 * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp */ #ifndef _UDP_H_ #define _UDP_H_ #define UDP_TTL 0x60 #define UDP_UDPDATALEN 16192 extern struct socket *udp_last_so; /* * Udp protocol header. * Per RFC 768, September, 1981. */ struct udphdr { uint16_t uh_sport; /* source port */ uint16_t uh_dport; /* destination port */ int16_t uh_ulen; /* udp length */ uint16_t uh_sum; /* udp checksum */ }; AssertCompileSize(struct udphdr, 8); /* * UDP kernel structures and variables. */ struct udpiphdr { struct ipovly ui_i; /* overlaid ip structure */ struct udphdr ui_u; /* udp header */ }; AssertCompileSize(struct udpiphdr, 28); #define ui_next ui_i.ih_next #define ui_prev ui_i.ih_prev #define ui_x1 ui_i.ih_x1 #define ui_pr ui_i.ih_pr #define ui_len ui_i.ih_len #define ui_src ui_i.ih_src #define ui_dst ui_i.ih_dst #define ui_sport ui_u.uh_sport #define ui_dport ui_u.uh_dport #define ui_ulen ui_u.uh_ulen #define ui_sum ui_u.uh_sum struct udpstat_t { /* input statistics: */ u_long udps_ipackets; /* total input packets */ u_long udps_hdrops; /* packet shorter than header */ u_long udps_badsum; /* checksum error */ u_long udps_badlen; /* data length larger than packet */ u_long udps_noport; /* no socket on port */ u_long udps_noportbcast; /* of above, arrived as broadcast */ u_long udps_fullsock; /* not delivered, input socket full */ u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ /* output statistics: */ u_long udps_opackets; /* total output packets */ }; /* * Names for UDP sysctl objects */ #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ #define UDPCTL_MAXID 2 extern struct udpstat udpstat; extern struct socket udb; struct mbuf; void udp_init (PNATState); void udp_input (PNATState, register struct mbuf *, int); int udp_output (PNATState, struct socket *, struct mbuf *, struct sockaddr_in *); int udp_attach (PNATState, struct socket *); void udp_detach (PNATState, struct socket *); u_int8_t udp_tos (struct socket *); void udp_emu (PNATState, struct socket *, struct mbuf *); struct socket * udp_listen (PNATState, u_int32_t, u_int, u_int32_t, u_int, int); int udp_output2(PNATState pData, struct socket *so, struct mbuf *m, struct sockaddr_in *saddr, struct sockaddr_in *daddr, int iptos); #endif