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. 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  * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $
  64  * $DragonFly: src/sys/netinet/udp_var.h,v 1.19 2008/11/11 10:46:58 sephe Exp $
  65  */
  66
  67 #ifndef _NETINET_UDP_VAR_H_
  68 #define _NETINET_UDP_VAR_H_
  69
  70 #ifndef _NETINET_IP_VAR_H_
  71 #include <netinet/ip_var.h>
  72 #endif
  73 #ifndef _NETINET_UDP_H_
  74 #include <netinet/udp.h>
  75 #endif
  76
  77 /*
  78  * UDP kernel structures and variables.
  79  */
  80 struct  udpiphdr {
  81         struct  ipovly ui_i;            /* overlaid ip structure */
  82         struct  udphdr ui_u;            /* udp header */
  83 };
  84 #define ui_x1           ui_i.ih_x1
  85 #define ui_pr           ui_i.ih_pr
  86 #define ui_len          ui_i.ih_len
  87 #define ui_src          ui_i.ih_src
  88 #define ui_dst          ui_i.ih_dst
  89 #define ui_sport        ui_u.uh_sport
  90 #define ui_dport        ui_u.uh_dport
  91 #define ui_ulen         ui_u.uh_ulen
  92 #define ui_sum          ui_u.uh_sum
  93
  94 /*
  95  * UDP Statistics.
  96  *
  97  * NOTE: Make sure this struct's size is multiple cache line size.
  98  */
  99 struct  udpstat {
 100                                 /* input statistics: */
 101         u_long  udps_ipackets;          /* total input packets */
 102         u_long  udps_hdrops;            /* packet shorter than header */
 103         u_long  udps_badsum;            /* checksum error */
 104         u_long  udps_nosum;             /* no checksum */
 105         u_long  udps_badlen;            /* data length larger than packet */
 106         u_long  udps_noport;            /* no socket on port */
 107         u_long  udps_noportbcast;       /* of above, arrived as broadcast */
 108         u_long  udps_fullsock;          /* not delivered, input socket full */
 109         u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
 110         u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
 111                                 /* output statistics: */
 112         u_long  udps_opackets;          /* total output packets */
 113         u_long  udps_fastout;           /* output packets on fast path */
 114         /* of no socket on port, arrived as multicast */
 115         u_long  udps_noportmcast;
 116         u_long  udps_pad[3];            /* pad to cache line size (64B) */
 117 };
 118 #ifdef _KERNEL
 119 CTASSERT((sizeof(struct udpstat) & __VM_CACHELINE_MASK) == 0);
 120 #endif
 121
 122 /*
 123  * Names for UDP sysctl objects
 124  */
 125 #define UDPCTL_CHECKSUM         1       /* checksum UDP packets */
 126 #define UDPCTL_STATS            2       /* statistics (read-only) */
 127 #define UDPCTL_MAXDGRAM         3       /* max datagram size */
 128 #define UDPCTL_RECVSPACE        4       /* default receive buffer space */
 129 #define UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
 130 #define UDPCTL_MAXID            6
 131
 132 #define UDPCTL_NAMES { \
 133         { 0, 0 }, \
 134         { "checksum", CTLTYPE_INT }, \
 135         { "stats", CTLTYPE_STRUCT }, \
 136         { "maxdgram", CTLTYPE_INT }, \
 137         { "recvspace", CTLTYPE_INT }, \
 138         { "pcblist", CTLTYPE_STRUCT }, \
 139 }
 140
 141 #ifdef _KERNEL
 142
 143 #define INP_WASBOUND_NOTANY     INP_FLAG_PROTO1 /* bound to non-null laddr */
 144
 145 #ifdef SYSCTL_DECL
 146 SYSCTL_DECL(_net_inet_udp);
 147 #endif
 148
 149 #define udp_stat        udpstat_percpu[mycpuid]
 150
 151 extern struct   pr_usrreqs udp_usrreqs;
 152 extern struct   inpcbinfo udbinfo[MAXCPU];
 153 extern u_long   udp_sendspace;
 154 extern u_long   udp_recvspace;
 155 extern struct   udpstat udpstat_percpu[MAXCPU];
 156 extern int      log_in_vain;
 157
 158 int                     udp_addrcpu (in_addr_t faddr, in_port_t fport,
 159                                      in_addr_t laddr, in_port_t lport);
 160 int                     udp_addrhash (in_addr_t faddr, in_port_t fport,
 161                                       in_addr_t laddr, in_port_t lport);
 162 struct lwkt_port        *udp_addrport (in_addr_t faddr, in_port_t fport,
 163                                      in_addr_t laddr, in_port_t lport);
 164 void                    udp_ctlinput(netmsg_t msg);
 165 void                    udp_ctloutput(netmsg_t msg);
 166 void                    udp_init (void);
 167 void                    udp_thread_init (void);
 168 int                     udp_input (struct mbuf **, int *, int);
 169 void                    udp_notify (struct inpcb *inp, int error);
 170 void                    udp_shutdown (union netmsg *);
 171 struct lwkt_port        *udp_ctlport (int, struct sockaddr *, void *, int *);
 172 struct lwkt_port        *udp_initport(void);
 173 inp_notify_t            udp_get_inpnotify(int, const struct sockaddr *,
 174                             struct ip **, int *);
 175
 176 #endif  /* _KERNEL */
 177
 178 #endif