bsd/netinet/udp_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1989, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)udp_var.h   8.1 (Berkeley) 6/10/93
  55  */
  56
  57 #ifndef _NETINET_UDP_VAR_H_
  58 #define _NETINET_UDP_VAR_H_
  59 #include <sys/appleapiopts.h>
  60
  61 #include <sys/sysctl.h>
  62
  63 /*
  64  * UDP kernel structures and variables.
  65  */
  66 struct  udpiphdr {
  67         struct  ipovly ui_i;            /* overlaid ip structure */
  68         struct  udphdr ui_u;            /* udp header */
  69 };
  70 #define ui_x1           ui_i.ih_x1
  71 #define ui_pr           ui_i.ih_pr
  72 #define ui_len          ui_i.ih_len
  73 #define ui_src          ui_i.ih_src
  74 #define ui_dst          ui_i.ih_dst
  75 #define ui_sport        ui_u.uh_sport
  76 #define ui_dport        ui_u.uh_dport
  77 #define ui_ulen         ui_u.uh_ulen
  78 #define ui_sum          ui_u.uh_sum
  79 #define ui_next         ui_i.ih_next
  80 #define ui_prev         ui_i.ih_prev
  81
  82 struct  udpstat {
  83                                 /* input statistics: */
  84         u_long  udps_ipackets;          /* total input packets */
  85         u_long  udps_hdrops;            /* packet shorter than header */
  86         u_long  udps_badsum;            /* checksum error */
  87         u_long  udps_badlen;            /* data length larger than packet */
  88         u_long  udps_noport;            /* no socket on port */
  89         u_long  udps_noportbcast;       /* of above, arrived as broadcast */
  90         u_long  udps_fullsock;          /* not delivered, input socket full */
  91         u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
  92         u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
  93                                 /* output statistics: */
  94         u_long  udps_opackets;          /* total output packets */
  95         u_long  udps_fastout;           /* output packets on fast path */
  96 #ifndef __APPLE__
  97         u_long  udps_nosum;             /* no checksum */
  98         /* of no socket on port, arrived as multicast */
  99         u_long  udps_noportmcast;
 100 #endif
 101 };
 102
 103 /*
 104  * Names for UDP sysctl objects
 105  */
 106 #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
 107 #define UDPCTL_STATS            2       /* statistics (read-only) */
 108 #define UDPCTL_MAXDGRAM         3       /* max datagram size */
 109 #define UDPCTL_RECVSPACE        4       /* default receive buffer space */
 110 #define UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
 111 #define UDPCTL_MAXID            6
 112
 113 #ifdef KERNEL_PRIVATE
 114 #define UDPCTL_NAMES { \
 115         { 0, 0 }, \
 116         { "checksum", CTLTYPE_INT }, \
 117         { "stats", CTLTYPE_STRUCT }, \
 118         { "maxdgram", CTLTYPE_INT }, \
 119         { "recvspace", CTLTYPE_INT }, \
 120         { "pcblist", CTLTYPE_STRUCT }, \
 121 }
 122
 123 SYSCTL_DECL(_net_inet_udp);
 124
 125 extern struct   pr_usrreqs udp_usrreqs;
 126 extern struct   inpcbhead udb;
 127 extern struct   inpcbinfo udbinfo;
 128 extern u_long   udp_sendspace;
 129 extern u_long   udp_recvspace;
 130 extern struct   udpstat udpstat;
 131 extern int      log_in_vain;
 132
 133 void    udp_ctlinput(int, struct sockaddr *, void *);
 134 void    udp_init(void);
 135 void    udp_input(struct mbuf *, int);
 136
 137 void    udp_notify(struct inpcb *inp, int errno);
 138 int     udp_shutdown(struct socket *so);
 139 int     udp_lock (struct socket *, int, int);
 140 int     udp_unlock (struct socket *, int, int);
 141 void    udp_slowtimo (void);
 142 #ifdef _KERN_LOCKS_H_
 143 lck_mtx_t *     udp_getlock (struct socket *, int);
 144 #else
 145 void *  udp_getlock (struct socket *, int);
 146 #endif
 147
 148 #endif /* KERNEL_PRIVATE */
 149 #endif /* _NETINET_UDP_VAR_H_ */