bsd/netinet/udp_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1982, 1986, 1989, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)udp_var.h   8.1 (Berkeley) 6/10/93
  63  */
  64
  65 #ifndef _NETINET_UDP_VAR_H_
  66 #define _NETINET_UDP_VAR_H_
  67 #include <sys/appleapiopts.h>
  68
  69 #include <sys/sysctl.h>
  70
  71 /*
  72  * UDP kernel structures and variables.
  73  */
  74 struct  udpiphdr {
  75         struct  ipovly ui_i;            /* overlaid ip structure */
  76         struct  udphdr ui_u;            /* udp header */
  77 };
  78 #define ui_x1           ui_i.ih_x1
  79 #define ui_pr           ui_i.ih_pr
  80 #define ui_len          ui_i.ih_len
  81 #define ui_src          ui_i.ih_src
  82 #define ui_dst          ui_i.ih_dst
  83 #define ui_sport        ui_u.uh_sport
  84 #define ui_dport        ui_u.uh_dport
  85 #define ui_ulen         ui_u.uh_ulen
  86 #define ui_sum          ui_u.uh_sum
  87 #define ui_next         ui_i.ih_next
  88 #define ui_prev         ui_i.ih_prev
  89
  90 struct  udpstat {
  91                                 /* input statistics: */
  92         u_long  udps_ipackets;          /* total input packets */
  93         u_long  udps_hdrops;            /* packet shorter than header */
  94         u_long  udps_badsum;            /* checksum error */
  95         u_long  udps_badlen;            /* data length larger than packet */
  96         u_long  udps_noport;            /* no socket on port */
  97         u_long  udps_noportbcast;       /* of above, arrived as broadcast */
  98         u_long  udps_fullsock;          /* not delivered, input socket full */
  99         u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
 100         u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
 101                                 /* output statistics: */
 102         u_long  udps_opackets;          /* total output packets */
 103         u_long  udps_fastout;           /* output packets on fast path */
 104 #ifndef __APPLE__
 105         u_long  udps_nosum;             /* no checksum */
 106         /* of no socket on port, arrived as multicast */
 107         u_long  udps_noportmcast;
 108 #endif
 109 };
 110
 111 /*
 112  * Names for UDP sysctl objects
 113  */
 114 #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
 115 #define UDPCTL_STATS            2       /* statistics (read-only) */
 116 #define UDPCTL_MAXDGRAM         3       /* max datagram size */
 117 #define UDPCTL_RECVSPACE        4       /* default receive buffer space */
 118 #define UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
 119 #define UDPCTL_MAXID            6
 120
 121 #ifdef KERNEL_PRIVATE
 122 #define UDPCTL_NAMES { \
 123         { 0, 0 }, \
 124         { "checksum", CTLTYPE_INT }, \
 125         { "stats", CTLTYPE_STRUCT }, \
 126         { "maxdgram", CTLTYPE_INT }, \
 127         { "recvspace", CTLTYPE_INT }, \
 128         { "pcblist", CTLTYPE_STRUCT }, \
 129 }
 130
 131 SYSCTL_DECL(_net_inet_udp);
 132
 133 extern struct   pr_usrreqs udp_usrreqs;
 134 extern struct   inpcbhead udb;
 135 extern struct   inpcbinfo udbinfo;
 136 extern u_long   udp_sendspace;
 137 extern u_long   udp_recvspace;
 138 extern struct   udpstat udpstat;
 139 extern int      log_in_vain;
 140
 141 void    udp_ctlinput(int, struct sockaddr *, void *);
 142 void    udp_init(void);
 143 void    udp_input(struct mbuf *, int);
 144
 145 void    udp_notify(struct inpcb *inp, int errno);
 146 int     udp_shutdown(struct socket *so);
 147 int     udp_lock (struct socket *, int, int);
 148 int     udp_unlock (struct socket *, int, int);
 149 void    udp_slowtimo (void);
 150 #ifdef _KERN_LOCKS_H_
 151 lck_mtx_t *     udp_getlock (struct socket *, int);
 152 #else
 153 void *  udp_getlock (struct socket *, int);
 154 #endif
 155
 156 #endif /* KERNEL_PRIVATE */
 157 #endif /* _NETINET_UDP_VAR_H_ */