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Annotation of Net2/netinet/udp_var.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  *
                     33:  *     @(#)udp_var.h   7.7 (Berkeley) 6/28/90
                     34:  */
                     35: 
                     36: /*
                     37:  * UDP kernel structures and variables.
                     38:  */
                     39: struct udpiphdr {
                     40:        struct  ipovly ui_i;            /* overlaid ip structure */
                     41:        struct  udphdr ui_u;            /* udp header */
                     42: };
                     43: #define        ui_next         ui_i.ih_next
                     44: #define        ui_prev         ui_i.ih_prev
                     45: #define        ui_x1           ui_i.ih_x1
                     46: #define        ui_pr           ui_i.ih_pr
                     47: #define        ui_len          ui_i.ih_len
                     48: #define        ui_src          ui_i.ih_src
                     49: #define        ui_dst          ui_i.ih_dst
                     50: #define        ui_sport        ui_u.uh_sport
                     51: #define        ui_dport        ui_u.uh_dport
                     52: #define        ui_ulen         ui_u.uh_ulen
                     53: #define        ui_sum          ui_u.uh_sum
                     54: 
                     55: struct udpstat {
                     56:                                /* input statistics: */
                     57:        int     udps_ipackets;          /* total input packets */
                     58:        int     udps_hdrops;            /* packet shorter than header */
                     59:        int     udps_badsum;            /* checksum error */
                     60:        int     udps_badlen;            /* data length larger than packet */
                     61:        int     udps_noport;            /* no socket on port */
                     62:        int     udps_noportbcast;       /* of above, arrived as broadcast */
                     63:        int     udps_fullsock;          /* not delivered, input socket full */
                     64:        int     udpps_pcbcachemiss;     /* input packets missing pcb cache */
                     65:                                /* output statistics: */
                     66:        int     udps_opackets;          /* total output packets */
                     67: };
                     68: 
                     69: #define        UDP_TTL         30      /* default time to live for UDP packets */
                     70: 
                     71: #ifdef KERNEL
                     72: struct inpcb udb;
                     73: struct udpstat udpstat;
                     74: #endif

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