1 /* $OpenBSD: udp_var.h,v 1.51 2024/02/03 22:50:09 mvs Exp $ */
2 /* $NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $ */
3
4 /*
5 * Copyright (c) 1982, 1986, 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
33 */
34
35 #ifndef _NETINET_UDP_VAR_H_
36 #define _NETINET_UDP_VAR_H_
37
38 /*
39 * UDP kernel structures and variables.
40 */
41 struct udpiphdr {
42 struct ipovly ui_i; /* overlaid ip structure */
43 struct udphdr ui_u; /* udp header */
44 };
45 #define ui_x1 ui_i.ih_x1
46 #define ui_pr ui_i.ih_pr
47 #define ui_len ui_i.ih_len
48 #define ui_src ui_i.ih_src
49 #define ui_dst ui_i.ih_dst
50 #define ui_sport ui_u.uh_sport
51 #define ui_dport ui_u.uh_dport
52 #define ui_ulen ui_u.uh_ulen
53 #define ui_sum ui_u.uh_sum
54
55 struct udpstat {
56 /* input statistics: */
57 u_long udps_ipackets; /* total input packets */
58 u_long udps_hdrops; /* packet shorter than header */
59 u_long udps_badsum; /* checksum error */
60 u_long udps_nosum; /* no checksum */
61 u_long udps_badlen; /* data length larger than packet */
62 u_long udps_noport; /* no socket on port */
63 u_long udps_noportbcast; /* of above, arrived as broadcast */
64 u_long udps_nosec; /* dropped for lack of ipsec */
65 u_long udps_fullsock; /* not delivered, input socket full */
66 u_long udps_pcbhashmiss; /* input packets missing pcb hash */
67 u_long udps_inswcsum; /* input software-csummed packets */
68 /* output statistics: */
69 u_long udps_opackets; /* total output packets */
70 u_long udps_outswcsum; /* output software-csummed packets */
71 };
72
73 /*
74 * Names for UDP sysctl objects
75 */
76 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
77 #define UDPCTL_BADDYNAMIC 2 /* return bad dynamic port bitmap */
78 #define UDPCTL_RECVSPACE 3 /* receive buffer space */
79 #define UDPCTL_SENDSPACE 4 /* send buffer space */
80 #define UDPCTL_STATS 5 /* UDP statistics */
81 #define UDPCTL_ROOTONLY 6 /* root only port bitmap */
82 #define UDPCTL_MAXID 7
83
84 #define UDPCTL_NAMES { \
85 { 0, 0 }, \
86 { "checksum", CTLTYPE_INT }, \
87 { "baddynamic", CTLTYPE_STRUCT }, \
88 { "recvspace", CTLTYPE_INT }, \
89 { "sendspace", CTLTYPE_INT }, \
90 { "stats", CTLTYPE_STRUCT }, \
91 { "rootonly", CTLTYPE_STRUCT }, \
92 }
93
94 #ifdef _KERNEL
95
96 #include <sys/percpu.h>
97
98 enum udpstat_counters {
99 /* input statistics: */
100 udps_ipackets, /* total input packets */
101 udps_hdrops, /* packet shorter than header */
102 udps_badsum, /* checksum error */
103 udps_nosum, /* no checksum */
104 udps_badlen, /* data length larger than packet */
105 udps_noport, /* no socket on port */
106 udps_noportbcast, /* of above, arrived as broadcast */
107 udps_nosec, /* dropped for lack of ipsec */
108 udps_fullsock, /* not delivered, input socket full */
109 udps_pcbhashmiss, /* input packets missing pcb hash */
110 udps_inswcsum, /* input software-csummed packets */
111 /* output statistics: */
112 udps_opackets, /* total output packets */
113 udps_outswcsum, /* output software-csummed packets */
114
115 udps_ncounters
116 };
117
118 extern struct cpumem *udpcounters;
119
120 static inline void
udpstat_inc(enum udpstat_counters c)121 udpstat_inc(enum udpstat_counters c)
122 {
123 counters_inc(udpcounters, c);
124 }
125
126 extern struct inpcbtable udbtable, udb6table;
127 extern struct udpstat udpstat;
128
129 extern const struct pr_usrreqs udp_usrreqs;
130
131 #ifdef INET6
132 extern const struct pr_usrreqs udp6_usrreqs;
133 #endif
134
135 #ifdef INET6
136 void udp6_ctlinput(int, struct sockaddr *, u_int, void *);
137 #endif /* INET6 */
138 void udp_ctlinput(int, struct sockaddr *, u_int, void *);
139 void udp_init(void);
140 int udp_input(struct mbuf **, int *, int, int);
141 #ifdef INET6
142 int udp6_output(struct inpcb *, struct mbuf *, struct mbuf *,
143 struct mbuf *);
144 #endif /* INET6 */
145 int udp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
146 int udp_attach(struct socket *, int, int);
147 int udp_detach(struct socket *);
148 void udp_lock(struct socket *);
149 void udp_unlock(struct socket *);
150 int udp_locked(struct socket *);
151 int udp_bind(struct socket *, struct mbuf *, struct proc *);
152 int udp_connect(struct socket *, struct mbuf *);
153 int udp_disconnect(struct socket *);
154 int udp_shutdown(struct socket *);
155 int udp_send(struct socket *, struct mbuf *, struct mbuf *,
156 struct mbuf *);
157 #endif /* _KERNEL */
158 #endif /* _NETINET_UDP_VAR_H_ */
159