sys/netinet/udp_var.h

   1 /*
   2  * Copyright (c) 2003, 2004 Jeffrey M. Hsu.  All rights reserved.
   3  * Copyright (c) 2003, 2004 The DragonFly Project.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to The DragonFly Project
   6  * by Jeffrey M. Hsu.
   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 DragonFly Project nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific, prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Copyright (c) 1982, 1986, 1989, 1993
  36  *      The Regents of the University of California.  All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)udp_var.h   8.1 (Berkeley) 6/10/93
  67  * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $
  68  * $DragonFly: src/sys/netinet/udp_var.h,v 1.19 2008/11/11 10:46:58 sephe Exp $
  69  */
  70
  71 #ifndef _NETINET_UDP_VAR_H_
  72 #define _NETINET_UDP_VAR_H_
  73
  74 #ifndef _NETINET_IP_VAR_H_
  75 #include <netinet/ip_var.h>
  76 #endif
  77 #ifndef _NETINET_UDP_H_
  78 #include <netinet/udp.h>
  79 #endif
  80
  81 /*
  82  * UDP kernel structures and variables.
  83  */
  84 struct  udpiphdr {
  85         struct  ipovly ui_i;            /* overlaid ip structure */
  86         struct  udphdr ui_u;            /* udp header */
  87 };
  88 #define ui_x1           ui_i.ih_x1
  89 #define ui_pr           ui_i.ih_pr
  90 #define ui_len          ui_i.ih_len
  91 #define ui_src          ui_i.ih_src
  92 #define ui_dst          ui_i.ih_dst
  93 #define ui_sport        ui_u.uh_sport
  94 #define ui_dport        ui_u.uh_dport
  95 #define ui_ulen         ui_u.uh_ulen
  96 #define ui_sum          ui_u.uh_sum
  97
  98 struct  udpstat {
  99                                 /* input statistics: */
 100         u_long  udps_ipackets;          /* total input packets */
 101         u_long  udps_hdrops;            /* packet shorter than header */
 102         u_long  udps_badsum;            /* checksum error */
 103         u_long  udps_nosum;             /* no checksum */
 104         u_long  udps_badlen;            /* data length larger than packet */
 105         u_long  udps_noport;            /* no socket on port */
 106         u_long  udps_noportbcast;       /* of above, arrived as broadcast */
 107         u_long  udps_fullsock;          /* not delivered, input socket full */
 108         u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
 109         u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
 110                                 /* output statistics: */
 111         u_long  udps_opackets;          /* total output packets */
 112         u_long  udps_fastout;           /* output packets on fast path */
 113         /* of no socket on port, arrived as multicast */
 114         u_long  udps_noportmcast;
 115 };
 116
 117 /*
 118  * Names for UDP sysctl objects
 119  */
 120 #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
 121 #define UDPCTL_STATS            2       /* statistics (read-only) */
 122 #define UDPCTL_MAXDGRAM         3       /* max datagram size */
 123 #define UDPCTL_RECVSPACE        4       /* default receive buffer space */
 124 #define UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
 125 #define UDPCTL_MAXID            6
 126
 127 #define UDPCTL_NAMES { \
 128         { 0, 0 }, \
 129         { "checksum", CTLTYPE_INT }, \
 130         { "stats", CTLTYPE_STRUCT }, \
 131         { "maxdgram", CTLTYPE_INT }, \
 132         { "recvspace", CTLTYPE_INT }, \
 133         { "pcblist", CTLTYPE_STRUCT }, \
 134 }
 135
 136 #ifdef _KERNEL
 137 #ifdef SYSCTL_DECL
 138 SYSCTL_DECL(_net_inet_udp);
 139 #endif
 140
 141 extern struct   pr_usrreqs udp_usrreqs;
 142 extern struct   inpcbinfo udbinfo;
 143 extern u_long   udp_sendspace;
 144 extern u_long   udp_recvspace;
 145 extern struct   udpstat udpstat;
 146 extern int      log_in_vain;
 147
 148 int                     udp_addrcpu (in_addr_t faddr, in_port_t fport,
 149                                      in_addr_t laddr, in_port_t lport);
 150 struct lwkt_port        *udp_addrport (in_addr_t faddr, in_port_t fport,
 151                                      in_addr_t laddr, in_port_t lport);
 152 void                    udp_ctlinput (int, struct sockaddr *, void *);
 153 void                    udp_init (void);
 154 void                    udp_thread_init (void);
 155 void                    udp_input (struct mbuf *, ...);
 156 void                    udp_notify (struct inpcb *inp, int error);
 157 int                     udp_shutdown (struct socket *so);
 158 struct lwkt_port        *udp_soport (struct socket *, struct sockaddr *,
 159                                      struct mbuf **);
 160 struct lwkt_port        *udp_soport_attach (struct socket *);
 161 struct lwkt_port        *udp_ctlport (int, struct sockaddr *, void *);
 162 struct lwkt_port        *udp_cport (int);
 163
 164 #endif
 165
 166 #endif