Virgin import of NgATM user part 0.91
This commit is contained in:
Hartmut Brandt
parent
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commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/vendor/ngatm/dist/; revision=121947
72
contrib/ngatm/man/libngatm.3
Normal file
72
contrib/ngatm/man/libngatm.3
Normal file
@ -0,0 +1,72 @@
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.\"
|
||||
.\" Copyright (c) 2001-2003
|
||||
.\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
.\"
|
||||
.\" Author: Hartmut Brandt <harti@freebsd.org>
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.\"
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.\" $Begemot: libunimsg/man/libunimsg.3,v 1.2 2003/08/21 16:01:07 hbb Exp $
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.\"
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.Dd October 30, 2003
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.Dt libngatm 3
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.Os
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.Sh NAME
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.Nm libngatm
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.Nd "ATM signalling library"
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.Sh LIBRARY
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Begemot ATM signalling library
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.Pq libngatm, -lngatm
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.Sh DESCRIPTION
|
||||
The Begemot UNI signalling library handles message decoding and encoding as
|
||||
well as the Q.2110 and Q.2120 transport protocols and adaptation layers, and
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||||
ATM-Forum UNI 4.0 compliant signalling.
|
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Because of this complexity the description is broken down in several man pages:
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.Bl -tag -width XXXX
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.It Xr unimsg 3
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Describes a data structure and functions for handling of variable sized
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messages.
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.It Xr unistruct 3
|
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describes data structures for the decoding, encoding and printing functions
|
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in the library.
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.It Xr unifunc 3
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describes the decoding, encoding and printing functions.
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.\" .It Xr sscop 3
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.\" describes the SSCOP transport protocol functions.
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.\" .It Xr sscfu 3
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.\" describes the SSCF at the UNI functions.
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.\" .It Xr uni 3
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.\" describes the UNI 4.0 signalling functions.
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.It Xr uniaddr 3
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describes address structures and handling functions.
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.\" .It Xr unisap 3
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.\" describes ATM-Forum ATM-API service access point structures and
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.\" handling functions.
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.El
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.Sh SEE ALSO
|
||||
.Xr sscop 1
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.Sh STANDARDS
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This implementation conforms to the applicable ITU-T
|
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recommendations and ATM Forum standards.
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.Sh AUTHORS
|
||||
.An Hartmut Brandt Aq harti@freebsd.org
|
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125
contrib/ngatm/man/uniaddr.3
Normal file
125
contrib/ngatm/man/uniaddr.3
Normal file
@ -0,0 +1,125 @@
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.\"
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.\" Copyright (c) 2001-2003
|
||||
.\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
.\"
|
||||
.\" Author: Hartmut Brandt <harti@freebsd.org>
|
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.\"
|
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.\" $Begemot: libunimsg/man/uniaddr.3,v 1.2 2003/08/21 16:01:07 hbb Exp $
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.\"
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.Dd October 30, 2003
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.Dt uniaddr 3
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.Os
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.Sh NAME
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.Nm unimsg ,
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.Nm uni_str2nsap ,
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.Nm uni_nsap2str ,
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.Nm uni_prefix2str ,
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.Nm uni_e1642nsap ,
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.Nm uni_nsap2e164
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.Nd "ATM signalling library - address handling"
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.Sh LIBRARY
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Begemot ATM signalling library
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.Pq libunimsg, -lunimsg
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.Sh SYNOPSIS
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.In netnatm/addr.h
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.Ft int
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.Fn uni_str2nsap "u_char *nsap" "const char *str"
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.Ft void
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.Fn uni_nsap2str "char *str" "const u_char *nsap" "int dots"
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.Ft void
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.Fn uni_prefix2str "char *str" "const u_char *prefix" "u_int len" "int dots"
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.Ft int
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.Fn uni_e1642nsap "u_char *nsap" "const char *e164"
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.Ft int
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.Fn uni_nsap2e164 "char *e164" "const u_char *nsap" "int check"
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.Sh DESCRIPTION
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The UNI message library contains a number of utility functions to handle
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NSAP and E.164 addresses.
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.Pp
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The function
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.Fn uni_str2nsap
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parses a string and interprets it as an NSAP address.
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The string should consist of exact 40 hexadecimal digits
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(upper and lower case are allowed) and any
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number of dots at any position.
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Any other character is illegal.
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The resulting NSAP address is written to the buffer pointed to by
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.Fa nsap .
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This buffer should be at least 20 bytes.
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On success the funtion returns 0.
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If an parsing error happens -1 is returned.
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.Pp
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The function
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.Fn uni_nsap2str
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converts the NSAP address pointed to by
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.Fa nsap
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into a string.
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For some commonly used NSAP formats (those with leading
|
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octets 0x39, 0x45 or 0x47) dots may be inserted to make the address more
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readable by passing a non-0 value in
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.Fa dots .
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The buffer pointed to by
|
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.Fa str
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should be large enough to hold the resulting string plus the terminating NUL.
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A size of 80 byte is large enough for all cases.
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.Pp
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The function
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.Fn uni_prefix2str
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converts an NSAP prefix to a string.
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The length of the NSAP prefix in bytes is passed in
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.Fa len .
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.Li "uni_nsap2str(str, nsap, dots)"
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is equivalent to
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.Li "uni_prefix2str(str, nsap, 20, dots)" .
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.Pp
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The function
|
||||
.Fn uni_e1642nsap
|
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converts an E.164 address given as an ASCII string to an embedded E.164 NSAP
|
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address.
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The string pointed to by
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.Fa e164
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||||
must consist of at least 1 and not more than 15 ASCII digits.
|
||||
The function returns 0 on success and -1 if the E.164 address was malformed.
|
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.Pp
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The function
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.Fn uni_nsap2e164
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extracts the E.164 address from an embedded E.164 NSAP address.
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The argument
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.Fa check
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specifies whether the NSAP address should be checked for correct syntax.
|
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If
|
||||
.Fa check
|
||||
is 0 the last 11 bytes of the address are ignored. If
|
||||
.Fa check
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||||
is 1 the last 11 bytes except the selector byte must be zero.
|
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If
|
||||
.Fa check
|
||||
is 2 the last 11 bytes must be zero.
|
||||
The function returns 0 on success and -1 when the NSAP address was not an
|
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embedded E.164 NSAP or one of the additional checks failed.
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.Sh SEE ALSO
|
||||
.Xr libngatm 3 ,
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.Sh AUTHORS
|
||||
.An Hartmut Brandt Aq harti@freebsd.org
|
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252
contrib/ngatm/man/unifunc.3
Normal file
252
contrib/ngatm/man/unifunc.3
Normal file
@ -0,0 +1,252 @@
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.\"
|
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.\" Copyright (c) 2001-2003
|
||||
.\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
.\"
|
||||
.\" Author: Hartmut Brandt <harti@freebsd.org>
|
||||
.\"
|
||||
.\" $Begemot: libunimsg/man/unifunc.3,v 1.2 2003/08/21 16:01:08 hbb Exp $
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||||
.\"
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||||
.Dd October 30, 2003
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.Dt unifunc 3
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.Os
|
||||
.Sh NAME
|
||||
.Nm libngatm
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.Nm uni_decode
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.Nm uni_decode_head
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.Nm uni_decode_body
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.Nm uni_decode_ie_hdr
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||||
.Nm uni_decode_ie_body
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.Nm uni_encode
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.Nm uni_encode_msg_hdr
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.Nm uni_encode_ie
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||||
.Nm uni_encode_ie_hdr
|
||||
.Nm uni_check_ie
|
||||
.Nm uni_print_cref
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.Nm uni_print_msghdr
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.Nm uni_print
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.Nm uni_print_ie
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||||
.Nm uni_initcx
|
||||
.Nm uni_print_cx
|
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.Nd "ATM signalling library - message handling functions"
|
||||
.Sh LIBRARY
|
||||
Begemot ATM signalling library
|
||||
.Pq libngatm, -lngatm
|
||||
.Sh SYNOPSIS
|
||||
.In netnatm/msg/unistruct.h
|
||||
.In netnatm/msg/unimsglib.h
|
||||
.Ft int
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.Fn uni_decode "struct uni_msg *buf" "struct uni_all *msg" "struct unicx *cx"
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.Ft int
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.Fn uni_decode_head "struct uni_msg *buf" "struct uni_all *msg" "struct unicx *cx"
|
||||
.Ft int
|
||||
.Fn uni_decode_body "struct uni_msg *buf" "struct uni_all *msg" "struct unicx *cx"
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||||
.Ft int
|
||||
.Fn uni_decode_ie_hdr "enum uni_ietype *type" "struct uni_iehdr *hdr" "struct uni_msg *buf" "struct unicx *cx" "u_int *ielen"
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.Ft int
|
||||
.Fn uni_decode_ie_body "enum uni_ietype type" "union uni_ieall *ie" "struct uni_msg *buf" "u_int ielen" "struct unicx *cx"
|
||||
.Ft int
|
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.Fn uni_encode "struct uni_msg *buf" "struct uni_all *msg" "struct unicx *cx"
|
||||
.Ft int
|
||||
.Fn uni_encode_msg_hdr "struct uni_msg *buf" "struct uni_msghdr *hdr" "enum uni_msgtype type" "struct unicx *cx" "int *mlen"
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||||
.Ft int
|
||||
.Fn uni_encode_ie "enum uni_ietype type" "struct uni_msg *buf" "union uni_ieall *ie" "struct unicx *cx"
|
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.Ft int
|
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.Fn uni_encode_ie_hdr "struct uni_msg *buf" "enum uni_ietype type" "struct uni_iehdr *hdr" "u_int len" "struct unicx *cx"
|
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.Ft int
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.Fn uni_check_ie "enum uni_ietype type" "union uni_ieall *ie" "struct unicx *cx"
|
||||
.Ft void
|
||||
.Fn uni_print_cref "char *buf" "size_t buflen" "struct uni_cref *cref" "struct unicx *cx"
|
||||
.Ft void
|
||||
.Fn uni_print_msghdr "char *buf" "size_t buflen" "struct uni_msghdr *hdr" "struct unicx *cx"
|
||||
.Ft void
|
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.Fn uni_print "char *buf" "size_t buflen" "struct uni_all *msg" "struct unicx *cx"
|
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.Ft void
|
||||
.Fn uni_print_ie "char *buf" "size_t buflen" "enum uni_ietype type" "union uni_ieall *ie" "struct unicx *cx"
|
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.Ft void
|
||||
.Fn uni_initcx "struct unicx *cx"
|
||||
.Ft void
|
||||
.Fn uni_print_cx "char *buf" "size_t buflen" "struct unicx *cx"
|
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.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
library handles UNI 4.0 messages.
|
||||
For each information element and message
|
||||
type the header files contain a structure definition.
|
||||
Additionally there
|
||||
are a number of help structures and a global context structure for some
|
||||
of the library functions.
|
||||
This document describes the functions that are
|
||||
used to handle messages.
|
||||
.Ss DECODING
|
||||
Decoding is the process of taking an octet stream containing a UNI message
|
||||
or IE, parsing it and filling in a message or IE structure.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_decode
|
||||
takes a message buffer, interprets it as a UNI message and fills in the
|
||||
structure pointed to by
|
||||
.Fa msg .
|
||||
It also takes a context argument and may fill the error array in the context.
|
||||
It returns -1 if there is an error decoding the message header and
|
||||
-2 if there is an error decoding the message body.
|
||||
The function returns 0 on success.
|
||||
.Pp
|
||||
The process of decoding a message can be split up by calling
|
||||
.Fn uni_decode_head
|
||||
and
|
||||
.Fn uni_decode_body .
|
||||
The first of these functions decodes only the message header and the second
|
||||
one decodes only the information elements.
|
||||
.Fn uni_decode_head
|
||||
returns 0 if it could decode the message header
|
||||
and -1 if the message could not be decoded (bad protocol
|
||||
identifier, bad length or broken call reference).
|
||||
.Fn uni_decode_body
|
||||
return 0 on success and -1 for unknown message types or if any
|
||||
IE had an error.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_decode_ie_hdr
|
||||
decodes the next information element header.
|
||||
It returns the IE type and its length
|
||||
in the variables pointed to by
|
||||
.Va type
|
||||
and
|
||||
.Va ielen
|
||||
and stores the decoded header in the structure pointed to by
|
||||
.Va hdr .
|
||||
The function returns 0 on success and -1 if there were not enough bytes
|
||||
in the buffer left for a complete IE header.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_decode_ie_body
|
||||
decodes the body of an information element. It is passed the buffer with the
|
||||
message
|
||||
.Fa buf ,
|
||||
the information element type
|
||||
.Fa type
|
||||
and length
|
||||
.Fa ielen .
|
||||
The IE is stored in the union pointed to by
|
||||
.Fa ie .
|
||||
The function returns -1 on errors and 0 on success.
|
||||
In any case the most correct
|
||||
number of bytes is consumed from the input buffer.
|
||||
.Ss ENCODING
|
||||
Encoding is the process of taking a message or IE structure and producing
|
||||
an octet stream from it.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_encode
|
||||
encodes a UNI message.
|
||||
It returns -1 if the message type is out of bounds, -3
|
||||
if the message type is unknown.
|
||||
The encoding functions for the message types
|
||||
can return their own error codes.
|
||||
The function returns 0 on success.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_encode_msg_hdr
|
||||
encodes a message header.
|
||||
The variable pointed to by
|
||||
.Fa mlen
|
||||
is set to the offset of the message length field from the begin of the
|
||||
byte stream.
|
||||
This is needed because the length of the message body will
|
||||
be known only after all the IEs have been encoded.
|
||||
Then the length
|
||||
has to be inserted into this place.
|
||||
The function returns -1 if the call reference
|
||||
was bad and 0 on success.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_encode_ie
|
||||
encodes one information element.
|
||||
The function returns 0 on success or -1
|
||||
on errors.
|
||||
The function
|
||||
.Fn uni_encode_ie_hdr
|
||||
encodes the four byte IE header.
|
||||
The argument
|
||||
.Fa len
|
||||
is the maximum expected length of the information element, not the real length.
|
||||
The function inserts a 0 in the real length field.
|
||||
This must be
|
||||
fixed up by the caller after encoding the IE contents.
|
||||
The function
|
||||
return -1 if an empty IE is to be encoded (in this case the length field will
|
||||
have been set to 4) or 0 otherwise.
|
||||
.Ss CHECKING
|
||||
There exists a number of function that do consistency checks on information
|
||||
elements.
|
||||
Note, that these functions do not check inter-IE consistency, but
|
||||
each IE by itself.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_check_ie
|
||||
check an information element for consistency.
|
||||
It returns 0 if the IE seems
|
||||
ok, -1 otherwise.
|
||||
.Ss PRINTING
|
||||
A number of functions can be used to print decoded messages and IEs in
|
||||
a human readable form.
|
||||
This is intended mainly for debugging.
|
||||
Some fields of the library context are used to control how the printing is done
|
||||
(see
|
||||
.Xr unistruct 3 ).
|
||||
Each of the function takes a
|
||||
.Fa buf
|
||||
and a
|
||||
.Fa buflen
|
||||
argument.
|
||||
The string that is generated in the buffer pointed to by
|
||||
.Fa buf
|
||||
is guaranteed to be NUL terminated.
|
||||
.Pp
|
||||
The function
|
||||
.Fn uni_print_cref
|
||||
formats a call reference taking into account special call references.
|
||||
The function
|
||||
.Fn uni_print_msg_hdr
|
||||
formats a message header.
|
||||
The functions
|
||||
.Fn uni_print
|
||||
and
|
||||
.Fn uni_print_ie
|
||||
print messages and information elements.
|
||||
.Ss CONTEXTS
|
||||
There are two functions for context handling.
|
||||
.Fn uni_initcx
|
||||
initializes a context with default values and
|
||||
.Fn uni_print_cx
|
||||
prints a context to the given buffer.
|
||||
.Sh SEE ALSO
|
||||
.Xr libngatm 3
|
||||
.Sh STANDARDS
|
||||
This implementation conforms to the applicable ITU-T
|
||||
recommendations and ATM Forum standards with the exception of some limitations
|
||||
(see the Configuration section).
|
||||
.Sh AUTHORS
|
||||
.An Hartmut Brandt Aq harti@freebsd.org
|
||||
320
contrib/ngatm/man/unistruct.3
Normal file
320
contrib/ngatm/man/unistruct.3
Normal file
@ -0,0 +1,320 @@
|
||||
.\"
|
||||
.\" Copyright (c) 2001-2003
|
||||
.\" Fraunhofer Institute for Open Communication Systems (FhG Fokus).
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
.\"
|
||||
.\" Author: Hartmut Brandt <harti@freebsd.org>
|
||||
.\"
|
||||
.\" $Begemot: libunimsg/man/unistruct.3,v 1.2 2003/08/21 16:01:08 hbb Exp $
|
||||
.\"
|
||||
.Dd October 30, 2003
|
||||
.Dt unistruct 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm libngatm
|
||||
.Nd "ATM signalling library"
|
||||
.Sh LIBRARY
|
||||
Begemot ATM signalling library
|
||||
.Pq libngatm, -lngatm
|
||||
.Sh SYNOPSIS
|
||||
.In netnatm/msg/unistruct.h
|
||||
.In netnatm/msg/unimsglib.h
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
library handles UNI 4.0 messages.
|
||||
For each information element and message
|
||||
type the header files contain a structure definition.
|
||||
Additionally there
|
||||
are a number of help structures and a global context structure for some
|
||||
of the library functions.
|
||||
This document only describes the common structures.
|
||||
For information element and message structures see the header files.
|
||||
.Ss LIBRARY CONFIGURATION
|
||||
When the library is compiled a number of constants are define in the file
|
||||
.Pa uni_config.h .
|
||||
They define certain limits.
|
||||
Because of the use of these definitions a change
|
||||
in any of them requires a complete recompilation of all library code and
|
||||
all code that uses the library.
|
||||
The following constants are defined (they
|
||||
value behind the name is the default value):
|
||||
.Bl -tag -width XXXX
|
||||
.It Dv UNI_MAX_ERRIE ( Li 50 )
|
||||
When decoding information elements and analyzing them the library fills
|
||||
an array in the context with the identifiers of IEs that had errors.
|
||||
This is the size of this array.
|
||||
.It Dv UNI_NUM_IE_GIT ( Li 3 )
|
||||
A message is allowed to contain more than one General Identifier Transport
|
||||
information element.
|
||||
This is the maximum supported number of these IEs.
|
||||
.It Dv UNI_NUM_IE_BLLI ( Li 3 )
|
||||
The maximum number of BLLI information elements in a SETUP message.
|
||||
.It Dv UNI_NUM_IE_CALLEDSUB ( Li 2 )
|
||||
The maximum number of Called Subaddress information elements in a SETUP message.
|
||||
.It Dv UNI_NUM_IE_CALLINGSUB ( Li 2 )
|
||||
The maximum number of Calling Subaddress information elements in a SETUP
|
||||
message.
|
||||
.It Dv UNI_NUM_IE_TNS ( Li 4 )
|
||||
The maximum number of Transit Network Selection information elements in a SETUP
|
||||
message.
|
||||
.It Dv UNI_TNS_MAXLEN ( Li 4 )
|
||||
The maximum size of a name in the TNS IE.
|
||||
.It Dv UNI_UU_MAXLEN ( Li 128 )
|
||||
Maximum size of user data in the UU IE.
|
||||
.It Dv UNI_ADDR_MAXLEN ( Li 20 )
|
||||
Maximum address size.
|
||||
.It Dv UNI_SUBADDR_MAXLEN ( Li 20 )
|
||||
Maximum subaddress size.
|
||||
.It Dv UNI_NUM_IE_DTL ( Li 10 )
|
||||
Maximum number of DTL information elements in a SETUP message.
|
||||
.It Dv UNI_DTL_MAXNUM ( Li 20 )
|
||||
Maximum number of identifiers in one DTL information element.
|
||||
.El
|
||||
.Ss INFORMATION ELEMENTS
|
||||
Each information element structure starts with a field of type:
|
||||
.Bd -literal -offset indent
|
||||
struct uni_iehdr {
|
||||
enum uni_coding coding; /* coding standard */
|
||||
enum uni_ieact act; /* action indicator */
|
||||
u_int pass:1; /* PNNI pass along request */
|
||||
u_int present;/* which optional elements are present */
|
||||
};
|
||||
.Ed
|
||||
.Pp
|
||||
The
|
||||
.Fa coding
|
||||
field is the coding standard of the information element and may be one of
|
||||
.Dv UNI_CODING_ITU
|
||||
or
|
||||
.Dv UNI_CODING_NET .
|
||||
The action indicator
|
||||
.Fa act
|
||||
is used for error processing and is one of:
|
||||
.Bl -tag -width XXXX
|
||||
.It Dv UNI_IEACT_CLEAR
|
||||
clear call
|
||||
.It Dv UNI_IEACT_IGNORE
|
||||
ignore IE and proceed
|
||||
.It Dv UNI_IEACT_REPORT
|
||||
ignore IE, report and proceed
|
||||
.It Dv UNI_IEACT_MSG_IGNORE
|
||||
ignore message
|
||||
.It Dv UNI_IEACT_MSG_REPORT
|
||||
ignore message and report
|
||||
.It Dv UNI_IEACT_DEFAULT
|
||||
the use action indicator flag was not set.
|
||||
.El
|
||||
.Pp
|
||||
For information elements in PNNI message the
|
||||
.Fa pass
|
||||
fields contains the pass along flag from the IE header.
|
||||
.Pp
|
||||
The
|
||||
.Fa present
|
||||
field is a bit field, which contains four common bits describing the current
|
||||
state of the information element.
|
||||
The rest of the bits are used by the
|
||||
information elements to indicate which of the optional fields of the IE are
|
||||
present.
|
||||
Most of the IE header files contain definitions for those bits.
|
||||
The common bits are:
|
||||
.Bd -literal -offset indent
|
||||
#define UNI_IE_EMPTY 0x80000000
|
||||
#define UNI_IE_PRESENT 0x40000000
|
||||
#define UNI_IE_ERROR 0x20000000
|
||||
#define UNI_IE_XXX 0x10000000
|
||||
.Ed
|
||||
.Pp
|
||||
The flag
|
||||
.Dv UNI_IE_EMPTY
|
||||
indicates that the information element is present, but empty (its length is
|
||||
zero).
|
||||
This is legal for all information elements.
|
||||
The flag
|
||||
.Dv UNI_IE_PRESENT
|
||||
indicates that the IE is present in the message and the flag
|
||||
.Dv UNI_IE_ERROR
|
||||
indicates that the IE had an error.
|
||||
The flag
|
||||
.Dv UNI_IE_XXX
|
||||
is currently not used.
|
||||
.Pp
|
||||
The following macros may be used to test or change these flags:
|
||||
.Bl -tag -width XXXX
|
||||
.It Dv IE_ISPRESENT
|
||||
Check whether the IE is present and not empty.
|
||||
Returns true in this case.
|
||||
.It Dv IE_SETPRESENT
|
||||
Set the IE to be present and not empty.
|
||||
.It Dv IE_ISEMPTY
|
||||
Check whether the IE is present and empty.
|
||||
Returns true in this case.
|
||||
.It Dv IE_SETEMPTY
|
||||
Set the IE to be present and empty.
|
||||
.It Dv IE_ISERROR
|
||||
Check whether the IE is present and has an error.
|
||||
Returns true in this case.
|
||||
.It Dv IE_SETERROR
|
||||
Sets the IE to be present and to have an error.
|
||||
.It Dv IE_ISGOOD
|
||||
Checks whether the IE is present, not empty and without error.
|
||||
Returns true in this case.
|
||||
.El
|
||||
.Pp
|
||||
For each IE type there is an
|
||||
.Vt enum uni_ietype
|
||||
definition of the form
|
||||
.Dv UNI_IE_*
|
||||
in
|
||||
.Pa uni_hdr.h .
|
||||
.Pp
|
||||
.Pa unistruct.h
|
||||
contains a
|
||||
.Vt union uni_ieall
|
||||
that is the union of all IE structures and a
|
||||
.Bd -literal -offset indent
|
||||
struct uni_ie {
|
||||
enum uni_ietype ietype;
|
||||
union uni_ieall u;
|
||||
};
|
||||
.Ed
|
||||
.Ss MESSAGES
|
||||
Each message structure starts with a
|
||||
.Bd -literal -offset indent
|
||||
struct uni_msghdr {
|
||||
struct uni_cref cref;
|
||||
enum uni_msgact act; /* action indicator */
|
||||
u_int pass:1; /* PNNI pass along request */
|
||||
};
|
||||
.Ed
|
||||
.Pp
|
||||
The
|
||||
.Fa cref
|
||||
is the call reference:
|
||||
.Bd -literal -offset indent
|
||||
struct uni_cref {
|
||||
u_int flag;
|
||||
u_int cref;
|
||||
};
|
||||
.Ed
|
||||
.Pp
|
||||
There are two special call references:
|
||||
.Dv CREF_GLOBAL
|
||||
and
|
||||
.Dv CREF_DUMMY .
|
||||
The
|
||||
.Fa act
|
||||
field is the message action indicator and has one of the following values:
|
||||
.Bl -tag -width XXXX
|
||||
.It Dv UNI_MSGACT_CLEAR
|
||||
clear call
|
||||
.It Dv UNI_MSGACT_IGNORE
|
||||
ignore message
|
||||
.It Dv UNI_MSGACT_REPORT
|
||||
send STATUS message
|
||||
.It Dv UNI_MSGACT_DEFAULT
|
||||
default handling for this message type
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Fa pass
|
||||
field is the pass along indicator in the case of PNNI messages.
|
||||
.Pp
|
||||
For each message type there is a
|
||||
.Vt enum uni_msgtype
|
||||
definition of the form
|
||||
.Dv UNI_*
|
||||
in
|
||||
.Pa uni_hdr.h .
|
||||
.Pa uni_struct.h
|
||||
contains a
|
||||
.Vt union_msgall
|
||||
that is the union of all message structures and a
|
||||
.Bd -literal -offset indent
|
||||
struct uni_all {
|
||||
enum uni_msgtype mtype;
|
||||
union uni_msgall u;
|
||||
};
|
||||
.Ed
|
||||
.Ss CONTEXTS
|
||||
The header file
|
||||
.Pa unimsglib.h
|
||||
contains a definition of a
|
||||
.Vt struct uni_context
|
||||
that is used to minimize the number of arguments passed to certain functions
|
||||
and to avoid the use of global variables.
|
||||
This structure has the following
|
||||
public fields (all other fields are used internally by the library):
|
||||
.Bl -tag -width XXXX
|
||||
.It Fa err
|
||||
This is an array consisting of the following structures:
|
||||
.Bd -literal -offset indent
|
||||
struct uni_ierr {
|
||||
enum uni_ierr_type err; /* what error */
|
||||
enum uni_ieact act; /* the action indicator */
|
||||
u_int ie:8; /* the ie type */
|
||||
u_int man:1; /* mandatory flag */
|
||||
u_int epref:1;/* Q.2971 9.5.3.2.1 low-pri epref */
|
||||
};
|
||||
.Ed
|
||||
When decoding information elements the information about IEs with errors is
|
||||
stuffed into this array.
|
||||
.It Fa errcnt
|
||||
The current number of IEs in
|
||||
.Fa err .
|
||||
.It Fa q2932
|
||||
Enable the Q.2932.1 Generic Functional Protocol.
|
||||
Currently only message
|
||||
and IE decoding/encoding is supported.
|
||||
The signalling part is still missing.
|
||||
.It Fa pnni
|
||||
Enable PNNI extensions.
|
||||
Currently only message and IE decoding/encoding
|
||||
is supported.
|
||||
The signalling part is still missing.
|
||||
.It Fa git_hard
|
||||
Do hard checking on GIT information elements.
|
||||
.It Fa bearer_hard
|
||||
Do hard checking on Broadband Bearer IEs.
|
||||
This involves rejecting old bearer
|
||||
type values.
|
||||
.It Fa cause_hard
|
||||
Do hard checking on Cause information elements.
|
||||
.It Fa multiline
|
||||
This is used by the printing routines.
|
||||
Legal values are 0 to 4 and give
|
||||
different kinds of printout.
|
||||
.It Fa tabsiz
|
||||
The size of tabulation to use in printing.
|
||||
4 is a good value.
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr libunimsg 3 ,
|
||||
.Sh STANDARDS
|
||||
This implementation conforms to the applicable ITU-T
|
||||
recommendations and ATM Forum standards with the exception of some limitations
|
||||
(see the Configuration section).
|
||||
.Sh AUTHORS
|
||||
.An Hartmut Brandt Aq harti@freebsd.org
|
||||
Loading…
Reference in New Issue
Block a user