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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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|
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#ifndef _UDP_H_ |
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#define _UDP_H_ |
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|
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#define UDP_TTL 0x60 |
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#define UDP_UDPDATALEN 16192 |
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|
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extern struct socket *udp_last_so; |
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|
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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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/* |
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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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|
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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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/* |
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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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|
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extern struct udpstat udpstat; |
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extern struct socket udb; |
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struct mbuf; |
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|
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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 |
