LCOM1920-T02G10

/*        $NetBSD: udp_var.h,v 1.40 2014/05/18 14:46:16 rmind 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

/*

 * UDP statistics.

 * Each counter is an unsigned 64-bit value.

 */

#define        UDP_STAT_IPACKETS        0        /* total input packets */

#define        UDP_STAT_HDROPS                1        /* packet shorter than header */

#define        UDP_STAT_BADSUM                2        /* checksum error */

#define        UDP_STAT_BADLEN                3        /* data length larger than packet */

#define        UDP_STAT_NOPORT                4        /* no socket on port */

#define        UDP_STAT_NOPORTBCAST        5        /* of above, arrived as broadcast */

#define        UDP_STAT_FULLSOCK        6        /* not delivered, input socket full */

#define        UDP_STAT_PCBHASHMISS        7        /* input packets missing PCB hash */

#define        UDP_STAT_OPACKETS        8        /* total output packets */

#define        UDP_NSTATS                9

/*

 * 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                7

#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 const struct pr_usrreqs udp_usrreqs;

void         *udp_ctlinput(int, const struct sockaddr *, void *);

int         udp_ctloutput(int, struct socket *, struct sockopt *);

void         udp_init(void);

void         udp_init_common(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_input_checksum(int af, struct mbuf *, const struct udphdr *, int,

            int);

void        udp_statinc(u_int);

#endif /* _KERNEL */

#endif /* !_NETINET_UDP_VAR_H_ */