FreeBSD/Linux Kernel Cross Reference
sys/netinet/udp_var.h

     /*      $OpenBSD: udp_var.h,v 1.49 2022/10/17 14:49:02 mvs Exp $        */
     /*      $NetBSD: udp_var.h,v 1.12 1996/02/13 23:44:41 christos Exp $    */
     
     /*
      * Copyright (c) 1982, 1986, 1989, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)udp_var.h   8.1 (Berkeley) 6/10/93
     */
    
    #ifndef _NETINET_UDP_VAR_H_
    #define _NETINET_UDP_VAR_H_
    
    /*
     * UDP kernel structures and variables.
     */
    struct  udpiphdr {
            struct  ipovly ui_i;            /* overlaid ip structure */
            struct  udphdr ui_u;            /* udp header */
    };
    #define ui_x1           ui_i.ih_x1
    #define ui_pr           ui_i.ih_pr
    #define ui_len          ui_i.ih_len
    #define ui_src          ui_i.ih_src
    #define ui_dst          ui_i.ih_dst
    #define ui_sport        ui_u.uh_sport
    #define ui_dport        ui_u.uh_dport
    #define ui_ulen         ui_u.uh_ulen
    #define ui_sum          ui_u.uh_sum
    
    struct  udpstat {
                                    /* input statistics: */
            u_long  udps_ipackets;          /* total input packets */
            u_long  udps_hdrops;            /* packet shorter than header */
            u_long  udps_badsum;            /* checksum error */
            u_long  udps_nosum;             /* no checksum */
            u_long  udps_badlen;            /* data length larger than packet */
            u_long  udps_noport;            /* no socket on port */
            u_long  udps_noportbcast;       /* of above, arrived as broadcast */
            u_long  udps_nosec;             /* dropped for lack of ipsec */
            u_long  udps_fullsock;          /* not delivered, input socket full */
            u_long  udps_pcbhashmiss;       /* input packets missing pcb hash */
            u_long  udps_inswcsum;          /* input software-csummed packets */
                                    /* output statistics: */
            u_long  udps_opackets;          /* total output packets */
            u_long  udps_outswcsum;         /* output software-csummed packets */
    };
    
    /*
     * Names for UDP sysctl objects
     */
    #define UDPCTL_CHECKSUM         1 /* checksum UDP packets */
    #define UDPCTL_BADDYNAMIC       2 /* return bad dynamic port bitmap */
    #define UDPCTL_RECVSPACE        3 /* receive buffer space */
    #define UDPCTL_SENDSPACE        4 /* send buffer space */
    #define UDPCTL_STATS            5 /* UDP statistics */
    #define UDPCTL_ROOTONLY         6 /* root only port bitmap */
    #define UDPCTL_MAXID            7
    
    #define UDPCTL_NAMES { \
            { 0, 0 }, \
            { "checksum", CTLTYPE_INT }, \
            { "baddynamic", CTLTYPE_STRUCT }, \
            { "recvspace",  CTLTYPE_INT }, \
            { "sendspace",  CTLTYPE_INT }, \
            { "stats",      CTLTYPE_STRUCT }, \
            { "rootonly", CTLTYPE_STRUCT }, \
    }
    
    #ifdef _KERNEL
    
    #include <sys/percpu.h>
    
    enum udpstat_counters {
                            /* input statistics: */
           udps_ipackets,          /* total input packets */
           udps_hdrops,            /* packet shorter than header */
           udps_badsum,            /* checksum error */
           udps_nosum,             /* no checksum */
           udps_badlen,            /* data length larger than packet */
           udps_noport,            /* no socket on port */
           udps_noportbcast,       /* of above, arrived as broadcast */
           udps_nosec,             /* dropped for lack of ipsec */
           udps_fullsock,          /* not delivered, input socket full */
           udps_pcbhashmiss,       /* input packets missing pcb hash */
           udps_inswcsum,          /* input software-csummed packets */
                           /* output statistics: */
           udps_opackets,          /* total output packets */
           udps_outswcsum,         /* output software-csummed packets */
   
           udps_ncounters
   };
   
   extern struct cpumem *udpcounters;
   
   static inline void
   udpstat_inc(enum udpstat_counters c)
   {
           counters_inc(udpcounters, c);
   }
   
   extern struct   inpcbtable udbtable;
   extern struct   udpstat udpstat;
   
   extern const struct pr_usrreqs udp_usrreqs;
   
   #ifdef INET6
   extern const struct pr_usrreqs udp6_usrreqs;
   #endif
   
   #ifdef INET6
   void    udp6_ctlinput(int, struct sockaddr *, u_int, void *);
   #endif /* INET6 */
   void     udp_ctlinput(int, struct sockaddr *, u_int, void *);
   void     udp_init(void);
   int      udp_input(struct mbuf **, int *, int, int);
   #ifdef INET6
   int      udp6_output(struct inpcb *, struct mbuf *, struct mbuf *,
           struct mbuf *);
   #endif /* INET6 */
   int      udp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
   int      udp_attach(struct socket *, int, int);
   int      udp_detach(struct socket *);
   void     udp_lock(struct socket *);
   void     udp_unlock(struct socket *);
   int      udp_bind(struct socket *, struct mbuf *, struct proc *);
   int      udp_connect(struct socket *, struct mbuf *);
   int      udp_disconnect(struct socket *);
   int      udp_shutdown(struct socket *);
   int      udp_send(struct socket *, struct mbuf *, struct mbuf *,
                struct mbuf *);
   #endif /* _KERNEL */
   #endif /* _NETINET_UDP_VAR_H_ */

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