1 | /* $NetBSD: udp_var.h,v 1.41 2016/01/20 22:01:18 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1982, 1986, 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 |
32 | */ |
33 | |
34 | #ifndef _NETINET_UDP_VAR_H_ |
35 | #define _NETINET_UDP_VAR_H_ |
36 | |
37 | /* |
38 | * UDP kernel structures and variables. |
39 | */ |
40 | struct udpiphdr { |
41 | struct ipovly ui_i; /* overlaid ip structure */ |
42 | struct udphdr ui_u; /* udp header */ |
43 | } __packed; |
44 | #define ui_x1 ui_i.ih_x1 |
45 | #define ui_pr ui_i.ih_pr |
46 | #define ui_len ui_i.ih_len |
47 | #define ui_src ui_i.ih_src |
48 | #define ui_dst ui_i.ih_dst |
49 | #define ui_sport ui_u.uh_sport |
50 | #define ui_dport ui_u.uh_dport |
51 | #define ui_ulen ui_u.uh_ulen |
52 | #define ui_sum ui_u.uh_sum |
53 | |
54 | /* |
55 | * UDP statistics. |
56 | * Each counter is an unsigned 64-bit value. |
57 | */ |
58 | #define UDP_STAT_IPACKETS 0 /* total input packets */ |
59 | #define UDP_STAT_HDROPS 1 /* packet shorter than header */ |
60 | #define UDP_STAT_BADSUM 2 /* checksum error */ |
61 | #define UDP_STAT_BADLEN 3 /* data length larger than packet */ |
62 | #define UDP_STAT_NOPORT 4 /* no socket on port */ |
63 | #define UDP_STAT_NOPORTBCAST 5 /* of above, arrived as broadcast */ |
64 | #define UDP_STAT_FULLSOCK 6 /* not delivered, input socket full */ |
65 | #define UDP_STAT_PCBHASHMISS 7 /* input packets missing PCB hash */ |
66 | #define UDP_STAT_OPACKETS 8 /* total output packets */ |
67 | |
68 | #define UDP_NSTATS 9 |
69 | |
70 | /* |
71 | * Names for UDP sysctl objects |
72 | */ |
73 | #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ |
74 | #define UDPCTL_SENDSPACE 2 /* default send buffer */ |
75 | #define UDPCTL_RECVSPACE 3 /* default recv buffer */ |
76 | #define UDPCTL_LOOPBACKCKSUM 4 /* do UDP checksum on loopback */ |
77 | #define UDPCTL_STATS 5 /* UDP statistics */ |
78 | #define UDPCTL_MAXID 7 |
79 | |
80 | #define UDPCTL_NAMES { \ |
81 | { 0, 0 }, \ |
82 | { "checksum", CTLTYPE_INT }, \ |
83 | { "sendspace", CTLTYPE_INT }, \ |
84 | { "recvspace", CTLTYPE_INT }, \ |
85 | { "do_loopback_cksum", CTLTYPE_INT }, \ |
86 | { "stats", CTLTYPE_STRUCT }, \ |
87 | } |
88 | |
89 | #ifdef _KERNEL |
90 | |
91 | extern struct inpcbtable udbtable; |
92 | extern const struct pr_usrreqs udp_usrreqs; |
93 | |
94 | void *udp_ctlinput(int, const struct sockaddr *, void *); |
95 | int udp_ctloutput(int, struct socket *, struct sockopt *); |
96 | void udp_init(void); |
97 | void udp_init_common(void); |
98 | void udp_input(struct mbuf *, ...); |
99 | int udp_output(struct mbuf *, struct inpcb *); |
100 | int udp_sysctl(int *, u_int, void *, size_t *, void *, size_t); |
101 | |
102 | int udp_input_checksum(int af, struct mbuf *, const struct udphdr *, int, |
103 | int); |
104 | void udp_statinc(u_int); |
105 | #endif /* _KERNEL */ |
106 | |
107 | #endif /* !_NETINET_UDP_VAR_H_ */ |
108 | |