priv.h

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    1 /*
    2  * Copyright (c) 2001-2003
    3  *      Fraunhofer Institute for Open Communication Systems (FhG Fokus).
    4  *      All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * Author: Hartmut Brandt <harti@freebsd.org>
   28  *
   29  * $Begemot: libunimsg/netnatm/msg/priv.h,v 1.4 2003/10/10 14:50:05 hbb Exp $
   30  *
   31  * Private definitions for the IE code file.
   32  */
   33 #ifndef unimsg_priv_h
   34 #define unimsg_priv_h
   35 
   36 #ifdef _KERNEL
   37 #include <sys/systm.h>
   38 #include <machine/stdarg.h>
   39 #define PANIC(X) panic X
   40 #else
   41 #include <stdio.h>
   42 #include <stdarg.h>
   43 #include <stdlib.h>
   44 #define PANIC(X) abort()
   45 #endif
   46 
   47 /*
   48  * Define a structure for the declaration of information elements.
   49  * For each coding scheme a quadrupel of check, print, encode and
   50  * decode functions must be defined. A structure of the same format
   51  * is used for messages.
   52  */
   53 typedef void (*uni_print_f)(const union uni_ieall *, struct unicx *);
   54 typedef int (*uni_check_f)(union uni_ieall *, struct unicx *);
   55 typedef int (*uni_encode_f)(struct uni_msg *, union uni_ieall *,
   56     struct unicx *);
   57 typedef int (*uni_decode_f)(union uni_ieall *, struct uni_msg *, u_int,
   58     struct unicx *);
   59 
   60 typedef void (*uni_msg_print_f)(const union uni_msgall *, struct unicx *);
   61 typedef int (*uni_msg_check_f)(struct uni_all *, struct unicx *);
   62 typedef int (*uni_msg_encode_f)(struct uni_msg *, union uni_msgall *,
   63     struct unicx *);
   64 typedef int (*uni_msg_decode_f)(union uni_msgall *, struct uni_msg *,
   65     enum uni_ietype, struct uni_iehdr *, u_int, struct unicx *);
   66 
   67 struct iedecl {
   68         u_int           flags;          /* information element flags */
   69         u_int           maxlen;         /* maximum size */
   70         uni_print_f     print;
   71         uni_check_f     check;
   72         uni_encode_f    encode;
   73         uni_decode_f    decode;
   74 };
   75 
   76 struct msgdecl {
   77         u_int           flags;
   78         const char      *name;
   79         uni_msg_print_f print;
   80         uni_msg_check_f check;
   81         uni_msg_encode_f encode;
   82         uni_msg_decode_f decode;
   83 };
   84 
   85 enum {
   86         UNIFL_DEFAULT   = 0x0001,
   87         UNIFL_ACCESS    = 0x0002,
   88 };
   89 
   90 extern const struct iedecl *uni_ietable[256][4];
   91 extern const struct msgdecl *uni_msgtable[256];
   92 
   93 /*
   94  * Need to check range here because declaring a variable as a enum does not
   95  * guarantee that the values will be legal.
   96  */
   97 #define GET_IEDECL(IE, CODING)                                          \
   98 ({                                                                      \
   99         const struct iedecl *_decl = NULL;                              \
  100                                                                         \
  101         if((CODING) <= 3 && (IE) <= 255)                                \
  102             if((_decl = uni_ietable[IE][CODING]) != NULL)               \
  103                 if((_decl->flags & UNIFL_DEFAULT) != 0)                 \
  104                     if((_decl = uni_ietable[IE][0]) == NULL)            \
  105                         PANIC(("IE %02x,%02x -- no default", CODING,IE));\
  106         _decl;                                                          \
  107 })
  108 
  109 
  110 enum {
  111         DEC_OK,
  112         DEC_ILL,
  113         DEC_ERR,
  114 };
  115 
  116 void uni_print_ie_internal(enum uni_ietype, const union uni_ieall *,
  117     struct unicx *);
  118 
  119 #endif

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FreeBSD/Linux Kernel Cross Reference sys/contrib/ngatm/netnatm/msg/priv.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/ngatm/netnatm/msg/priv.h