freebsd-dev/sys/netatm/uni/unisig_decode.h

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/*-
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
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* @(#) $FreeBSD$
*
*/
/*
* ATM Forum UNI 3.0/3.1 Signalling Manager
* ----------------------------------------
*
* Message formats
*
*/
#ifndef _UNI_SIG_DECODE_H
#define _UNI_SIG_DECODE_H
/*
* Values specifying which IEs are required in messages
*/
#define IE_NA 0
#define IE_MAND 1
#define IE_OPT 2
/*
* Structure for information element decoding information
*/
struct ie_ent {
u_char ident; /* IE identifier */
int min_len; /* Min. length */
int max_len; /* Max. length */
int p_idx; /* IE pointer index in msg */
int (*decode) /* Decoding function */
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(struct usfmt *, struct ie_generic *);
};
/*
* Macro to give the offset of a field in a generic IE structure
*/
#define IE_OFFSET(f) \
((int)&((struct ie_generic *) 0)->f)
/*
* Macro to give the size of a field in a generic IE structure
*/
#define IE_FSIZE(f) \
(sizeof(((struct ie_generic *) 0)->f))
#define IE_OFF_SIZE(f) IE_OFFSET(f),IE_FSIZE(f)
/*
* Structure to define a field-driven decoding table (for AAL
* parameters and ATM user cell rate IEs)
*/
struct ie_decode_tbl {
u_char ident;
int len;
int f_offs;
int f_size;
};
#endif /* _UNI_SIG_DECODE_H */