mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-28 11:57:28 +00:00
c2025a7660
translating these manual pages. Minor corrections by me. Submitted by: Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp>
135 lines
3.4 KiB
Groff
135 lines
3.4 KiB
Groff
.\"
|
|
.\" Copyright (c) 2004
|
|
.\" Hartmut Brandt.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Author: Hartmut Brandt <harti@FreeBSD.org>
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.\" ngatmbase(4) man page
|
|
.\"
|
|
.Dd August 24, 2004
|
|
.Dt NGATMBASE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ngatmbase
|
|
.Nd netgraph ATM utility module
|
|
.Sh SYNOPSIS
|
|
.In netnatm/unimsg.h
|
|
.In netgraph/atm/ngatmbase.h
|
|
.Ft "struct mbuf *"
|
|
.Fn uni_msg_pack_mbuf "struct uni_msg *msg" "void *hdr" "size_t len"
|
|
.Ft "struct uni_msg *"
|
|
.Fn uni_msg_alloc "size_t len"
|
|
.Ft "struct uni_msg *"
|
|
.Fn uni_msg_build "void *buf" ...
|
|
.Ft void
|
|
.Fn uni_msg_destroy "struct uni_msg *msg"
|
|
.Ft int
|
|
.Fn uni_msg_unpack_mbuf "struct mbuf *m" "struct uni_msg *msgp"
|
|
.Sh DESCRIPTION
|
|
This module provides utility functions for the handling of signalling
|
|
messages to the NgATM modules.
|
|
.Pp
|
|
The
|
|
.Fn uni_msg_pack_mbuf
|
|
function
|
|
packs a message into one or several
|
|
.Vt mbuf Ns s
|
|
optionally prepending a header.
|
|
The header is given by its address
|
|
.Fa hdr
|
|
and length
|
|
.Fa len .
|
|
If
|
|
.Fa hdr
|
|
is
|
|
.Dv NULL
|
|
or
|
|
.Fa len
|
|
equals 0, no header is prepended.
|
|
Either
|
|
.Fa msg
|
|
or
|
|
.Fa hdr
|
|
may be
|
|
.Dv NULL
|
|
but not both.
|
|
The
|
|
.Fn uni_msg_pack_mbuf
|
|
function
|
|
returns a pointer to the allocated
|
|
.Vt mbuf
|
|
chain or
|
|
.Dv NULL
|
|
in the case of an error.
|
|
.Pp
|
|
The
|
|
.Fn uni_msg_alloc
|
|
function
|
|
allocates a new message with space for at least
|
|
.Fa len
|
|
bytes.
|
|
In the case of an error
|
|
.Dv NULL
|
|
is returned.
|
|
.Pp
|
|
The
|
|
.Fn uni_msg_build
|
|
function constructs a message from pieces.
|
|
Each piece is given by a pair of
|
|
arguments, the first of type
|
|
.Vt "void *"
|
|
and the second a
|
|
.Vt size_t .
|
|
The list of pieces must be terminated by
|
|
.Po Vt "void *" Pc Ns Dv NULL .
|
|
.Pp
|
|
The
|
|
.Fn uni_msg_destroy
|
|
function
|
|
destroys the messages and frees all the messages's memory.
|
|
.Pp
|
|
The
|
|
.Fn uni_msg_unpack_mbuf
|
|
function
|
|
unpacks an
|
|
.Vt mbuf
|
|
chain info a
|
|
.Vt uni_msg .
|
|
A pointer to the newly allocated message is stored in
|
|
.Fa msgp
|
|
and 0 is returned.
|
|
In the case of an error (either when no packet header is found
|
|
in the first mbuf or memory cannot be allocated) the function
|
|
returns an appropriate error code.
|
|
.Sh SEE ALSO
|
|
.Xr ng_ccatm 4 ,
|
|
.Xr ng_sscfu 4 ,
|
|
.Xr ng_sscop 4 ,
|
|
.Xr ng_uni 4
|
|
.Sh AUTHORS
|
|
.An Harti Brandt Aq harti@FreeBSD.org
|