110 lines
4.3 KiB
C
110 lines
4.3 KiB
C
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/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)udp.h 8.1 (Berkeley) 6/10/93
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* udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
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*/
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#ifndef _UDP_H_
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#define _UDP_H_
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#define UDP_TTL 0x60
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#define UDP_UDPDATALEN 16192
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extern struct socket *udp_last_so;
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/*
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* Udp protocol header.
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* Per RFC 768, September, 1981.
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*/
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struct udphdr {
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u_int16_t uh_sport; /* source port */
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u_int16_t uh_dport; /* destination port */
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int16_t uh_ulen; /* udp length */
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u_int16_t uh_sum; /* udp checksum */
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};
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/*
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* UDP kernel structures and variables.
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*/
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struct udpiphdr {
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struct ipovly ui_i; /* overlaid ip structure */
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struct udphdr ui_u; /* udp header */
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};
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#define ui_next ui_i.ih_next
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#define ui_prev ui_i.ih_prev
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#define ui_x1 ui_i.ih_x1
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#define ui_pr ui_i.ih_pr
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#define ui_len ui_i.ih_len
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#define ui_src ui_i.ih_src
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#define ui_dst ui_i.ih_dst
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#define ui_sport ui_u.uh_sport
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#define ui_dport ui_u.uh_dport
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#define ui_ulen ui_u.uh_ulen
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#define ui_sum ui_u.uh_sum
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struct udpstat {
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/* input statistics: */
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u_long udps_ipackets; /* total input packets */
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u_long udps_hdrops; /* packet shorter than header */
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u_long udps_badsum; /* checksum error */
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u_long udps_badlen; /* data length larger than packet */
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u_long udps_noport; /* no socket on port */
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u_long udps_noportbcast; /* of above, arrived as broadcast */
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u_long udps_fullsock; /* not delivered, input socket full */
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u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
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/* output statistics: */
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u_long udps_opackets; /* total output packets */
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};
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/*
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* Names for UDP sysctl objects
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*/
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#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
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#define UDPCTL_MAXID 2
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extern struct udpstat udpstat;
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extern struct socket udb;
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void udp_init _P((void));
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void udp_input _P((register struct mbuf *, int));
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int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
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int udp_attach _P((struct socket *));
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void udp_detach _P((struct socket *));
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u_int8_t udp_tos _P((struct socket *));
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void udp_emu _P((struct socket *, struct mbuf *));
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struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
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int udp_output2(struct socket *so, struct mbuf *m,
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struct sockaddr_in *saddr, struct sockaddr_in *daddr,
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int iptos);
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#endif
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