1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
2 | /* |
3 | * Copyright (c) 1982, 1986, 1993 |
4 | * The Regents of the University of California. All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. Neither the name of the University nor the names of its contributors |
15 | * may be used to endorse or promote products derived from this software |
16 | * without specific prior written permission. |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
28 | * SUCH DAMAGE. |
29 | * |
30 | * @(#)udp.h 8.1 (Berkeley) 6/10/93 |
31 | * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp |
32 | */ |
33 | |
34 | #ifndef UDP_H |
35 | #define UDP_H |
36 | |
37 | #define UDP_TTL 0x60 |
38 | #define UDP_UDPDATALEN 16192 |
39 | |
40 | /* |
41 | * Udp protocol header. |
42 | * Per RFC 768, September, 1981. |
43 | */ |
44 | struct udphdr { |
45 | uint16_t uh_sport; /* source port */ |
46 | uint16_t uh_dport; /* destination port */ |
47 | int16_t uh_ulen; /* udp length */ |
48 | uint16_t uh_sum; /* udp checksum */ |
49 | }; |
50 | |
51 | /* |
52 | * UDP kernel structures and variables. |
53 | */ |
54 | struct udpiphdr { |
55 | struct ipovly ui_i; /* overlaid ip structure */ |
56 | struct udphdr ui_u; /* udp header */ |
57 | }; |
58 | #define ui_mbuf ui_i.ih_mbuf.mptr |
59 | #define ui_x1 ui_i.ih_x1 |
60 | #define ui_pr ui_i.ih_pr |
61 | #define ui_len ui_i.ih_len |
62 | #define ui_src ui_i.ih_src |
63 | #define ui_dst ui_i.ih_dst |
64 | #define ui_sport ui_u.uh_sport |
65 | #define ui_dport ui_u.uh_dport |
66 | #define ui_ulen ui_u.uh_ulen |
67 | #define ui_sum ui_u.uh_sum |
68 | |
69 | /* |
70 | * Names for UDP sysctl objects |
71 | */ |
72 | #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ |
73 | #define UDPCTL_MAXID 2 |
74 | |
75 | struct mbuf; |
76 | |
77 | void udp_init(Slirp *); |
78 | void udp_cleanup(Slirp *); |
79 | void udp_input(register struct mbuf *, int); |
80 | int udp_attach(struct socket *, unsigned short af); |
81 | void udp_detach(struct socket *); |
82 | struct socket *udp_listen(Slirp *, uint32_t, unsigned, uint32_t, unsigned, int); |
83 | int udp_output(struct socket *so, struct mbuf *m, struct sockaddr_in *saddr, |
84 | struct sockaddr_in *daddr, int iptos); |
85 | |
86 | void udp6_input(register struct mbuf *); |
87 | int udp6_output(struct socket *so, struct mbuf *m, struct sockaddr_in6 *saddr, |
88 | struct sockaddr_in6 *daddr); |
89 | |
90 | #endif |
91 | |