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Annotation of XNU/bsd/netinet/udp_var.h, revision 1.1

1.1     ! root        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: 
        !            60: #include <sys/sysctl.h>
        !            61: 
        !            62: /*
        !            63:  * UDP kernel structures and variables.
        !            64:  */
        !            65: struct udpiphdr {
        !            66:        struct  ipovly ui_i;            /* overlaid ip structure */
        !            67:        struct  udphdr ui_u;            /* udp header */
        !            68: };
        !            69: #define        ui_x1           ui_i.ih_x1
        !            70: #define        ui_pr           ui_i.ih_pr
        !            71: #define        ui_len          ui_i.ih_len
        !            72: #define        ui_src          ui_i.ih_src
        !            73: #define        ui_dst          ui_i.ih_dst
        !            74: #define        ui_sport        ui_u.uh_sport
        !            75: #define        ui_dport        ui_u.uh_dport
        !            76: #define        ui_ulen         ui_u.uh_ulen
        !            77: #define        ui_sum          ui_u.uh_sum
        !            78: #define ui_next                ui_i.ih_next
        !            79: #define ui_prev                ui_i.ih_prev
        !            80: 
        !            81: struct udpcb {
        !            82:        /* XXX - these should be by reference so we can do options quickly */
        !            83:        struct  ip udb_ip;
        !            84:        struct  udphdr udb_uh;
        !            85:        struct  sockaddr_in udb_conn;
        !            86:        struct  in_hostcache *udb_hc;
        !            87:        struct  mbuf *udb_queue;
        !            88: };
        !            89: #define        inptoudpcb(inp) ((struct udpdb *)(inp)->inp_ppcb)
        !            90: 
        !            91: struct udpstat {
        !            92:                                /* input statistics: */
        !            93:        u_long  udps_ipackets;          /* total input packets */
        !            94:        u_long  udps_hdrops;            /* packet shorter than header */
        !            95:        u_long  udps_badsum;            /* checksum error */
        !            96:        u_long  udps_badlen;            /* data length larger than packet */
        !            97:        u_long  udps_noport;            /* no socket on port */
        !            98:        u_long  udps_noportbcast;       /* of above, arrived as broadcast */
        !            99:        u_long  udps_fullsock;          /* not delivered, input socket full */
        !           100:        u_long  udpps_pcbcachemiss;     /* input packets missing pcb cache */
        !           101:        u_long  udpps_pcbhashmiss;      /* input packets not for hashed pcb */
        !           102:                                /* output statistics: */
        !           103:        u_long  udps_opackets;          /* total output packets */
        !           104:        u_long  udps_fastout;           /* output packets on fast path */
        !           105: };
        !           106: 
        !           107: /*
        !           108:  * Names for UDP sysctl objects
        !           109:  */
        !           110: #define        UDPCTL_CHECKSUM         1       /* checksum UDP packets */
        !           111: #define UDPCTL_STATS           2       /* statistics (read-only) */
        !           112: #define        UDPCTL_MAXDGRAM         3       /* max datagram size */
        !           113: #define        UDPCTL_RECVSPACE        4       /* default receive buffer space */
        !           114: #define        UDPCTL_PCBLIST          5       /* list of PCBs for UDP sockets */
        !           115: #define UDPCTL_MAXID           6
        !           116: 
        !           117: #define UDPCTL_NAMES { \
        !           118:        { 0, 0 }, \
        !           119:        { "checksum", CTLTYPE_INT }, \
        !           120:        { "stats", CTLTYPE_STRUCT }, \
        !           121:        { "maxdgram", CTLTYPE_INT }, \
        !           122:        { "recvspace", CTLTYPE_INT }, \
        !           123:        { "pcblist", CTLTYPE_STRUCT }, \
        !           124: }
        !           125: 
        !           126: #ifdef KERNEL
        !           127: SYSCTL_DECL(_net_inet_udp);
        !           128: 
        !           129: extern struct  pr_usrreqs udp_usrreqs;
        !           130: 
        !           131: void    udp_ctlinput __P((int, struct sockaddr *, void *));
        !           132: void    udp_init __P((void));
        !           133: void    udp_input __P((struct mbuf *, int));
        !           134: #endif
        !           135: 
        !           136: #endif

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