/
udp_var.h
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/
udp_var.h
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/* $NetBSD: udp_var.h,v 1.32.26.1 2007/12/26 19:57:43 ad Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NETINET_UDP_VAR_H_
#define _NETINET_UDP_VAR_H_
/*
* UDP kernel structures and variables.
*/
struct udpiphdr {
struct ipovly ui_i; /* overlaid ip structure */
struct udphdr ui_u; /* udp header */
} __packed;
#define ui_x1 ui_i.ih_x1
#define ui_pr ui_i.ih_pr
#define ui_len ui_i.ih_len
#define ui_src ui_i.ih_src
#define ui_dst ui_i.ih_dst
#define ui_sport ui_u.uh_sport
#define ui_dport ui_u.uh_dport
#define ui_ulen ui_u.uh_ulen
#define ui_sum ui_u.uh_sum
struct udpstat {
/* input statistics: */
u_quad_t udps_ipackets; /* total input packets */
u_quad_t udps_hdrops; /* packet shorter than header */
u_quad_t udps_badsum; /* checksum error */
u_quad_t udps_badlen; /* data length larger than packet */
u_quad_t udps_noport; /* no socket on port */
u_quad_t udps_noportbcast; /* of above, arrived as broadcast */
u_quad_t udps_fullsock; /* not delivered, input socket full */
u_quad_t udps_pcbhashmiss; /* input packets missing pcb hash */
/* output statistics: */
u_quad_t udps_opackets; /* total output packets */
};
/*
* Names for UDP sysctl objects
*/
#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
#define UDPCTL_SENDSPACE 2 /* default send buffer */
#define UDPCTL_RECVSPACE 3 /* default recv buffer */
#define UDPCTL_LOOPBACKCKSUM 4 /* do UDP checksum on loopback */
#define UDPCTL_STATS 5 /* UDP statistics */
#define UDPCTL_MAXID 6
#define UDPCTL_NAMES { \
{ 0, 0 }, \
{ "checksum", CTLTYPE_INT }, \
{ "sendspace", CTLTYPE_INT }, \
{ "recvspace", CTLTYPE_INT }, \
{ "do_loopback_cksum", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT }, \
}
#ifdef _KERNEL
extern struct inpcbtable udbtable;
extern struct udpstat udpstat;
#ifdef __NO_STRICT_ALIGNMENT
#define UDP_HDR_ALIGNED_P(uh) 1
#else
#define UDP_HDR_ALIGNED_P(uh) ((((vaddr_t) (uh)) & 3) == 0)
#endif
void *udp_ctlinput(int, const struct sockaddr *, void *);
int udp_ctloutput(int, struct socket *, int, int, struct mbuf **);
void udp_init(void);
void udp_input(struct mbuf *, ...);
int udp_output(struct mbuf *, ...);
int udp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
int udp_usrreq(struct socket *,
int, struct mbuf *, struct mbuf *, struct mbuf *, struct lwp *);
int udp_input_checksum(int af, struct mbuf *, const struct udphdr *, int,
int);
#endif
#endif /* !_NETINET_UDP_VAR_H_ */