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Annotation of sys/netinet/udp_var.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: udp_var.h,v 1.16 2004/02/17 12:07:45 markus Exp $     */
                      2: /*     $NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $    */
                      3:
                      4: /*
                      5:  * Copyright (c) 1982, 1986, 1989, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      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 University nor the names of its contributors
                     17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  *
                     32:  *     @(#)udp_var.h   8.1 (Berkeley) 6/10/93
                     33:  */
                     34:
                     35: #ifndef _NETINET_UDP_VAR_H_
                     36: #define _NETINET_UDP_VAR_H_
                     37:
                     38: /*
                     39:  * UDP kernel structures and variables.
                     40:  */
                     41: struct udpiphdr {
                     42:        struct  ipovly ui_i;            /* overlaid ip structure */
                     43:        struct  udphdr ui_u;            /* udp header */
                     44: };
                     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:        u_long  udps_ipackets;          /* total input packets */
                     58:        u_long  udps_hdrops;            /* packet shorter than header */
                     59:        u_long  udps_badsum;            /* checksum error */
                     60:        u_long  udps_nosum;             /* no checksum */
                     61:        u_long  udps_badlen;            /* data length larger than packet */
                     62:        u_long  udps_noport;            /* no socket on port */
                     63:        u_long  udps_noportbcast;       /* of above, arrived as broadcast */
                     64:        u_long  udps_nosec;             /* dropped for lack of ipsec */
                     65:        u_long  udps_fullsock;          /* not delivered, input socket full */
                     66:        u_long  udps_pcbhashmiss;       /* input packets missing pcb hash */
                     67:        u_long  udps_inhwcsum;          /* input hardware-csummed packets */
                     68:                                /* output statistics: */
                     69:        u_long  udps_opackets;          /* total output packets */
                     70:        u_long  udps_outhwcsum;         /* output hardware-csummed packets */
                     71: };
                     72:
                     73: /*
                     74:  * Names for UDP sysctl objects
                     75:  */
                     76: #define        UDPCTL_CHECKSUM         1 /* checksum UDP packets */
                     77: #define        UDPCTL_BADDYNAMIC       2 /* return bad dynamic port bitmap */
                     78: #define UDPCTL_RECVSPACE       3 /* receive buffer space */
                     79: #define UDPCTL_SENDSPACE       4 /* send buffer space */
                     80: #define UDPCTL_MAXID           5
                     81:
                     82: #define UDPCTL_NAMES { \
                     83:        { 0, 0 }, \
                     84:        { "checksum", CTLTYPE_INT }, \
                     85:        { "baddynamic", CTLTYPE_STRUCT }, \
                     86:        { "recvspace",  CTLTYPE_INT }, \
                     87:        { "sendspace",  CTLTYPE_INT }, \
                     88: }
                     89:
                     90: #define UDPCTL_VARS { \
                     91:        NULL, \
                     92:        &udpcksum, \
                     93:        NULL, \
                     94:        &udp_recvspace, \
                     95:        &udp_sendspace, \
                     96: }
                     97:
                     98: #ifdef _KERNEL
                     99: extern struct  inpcbtable udbtable;
                    100: extern struct  udpstat udpstat;
                    101:
                    102: #if defined(INET6) && !defined(TCP6)
                    103: void   udp6_ctlinput(int, struct sockaddr *, void *);
                    104: int    udp6_input(struct mbuf **, int *, int);
                    105: int    udp6_usrreq(struct socket *,
                    106:            int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *);
                    107: #endif /* INET6 && !TCP6 */
                    108: void    *udp_ctlinput(int, struct sockaddr *, void *);
                    109: void    udp_init(void);
                    110: void    udp_input(struct mbuf *, ...);
                    111: #ifdef INET6
                    112: int     udp6_output(struct inpcb *, struct mbuf *, struct mbuf *,
                    113:        struct mbuf *);
                    114: #endif /* INET6 */
                    115: int     udp_output(struct mbuf *, ...);
                    116: int     udp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
                    117: int     udp_usrreq(struct socket *,
                    118:            int, struct mbuf *, struct mbuf *, struct mbuf *);
                    119: #endif /* _KERNEL */
                    120: #endif /* _NETINET_UDP_VAR_H_ */