3f3f4cdba2
Of particular interest here is the ieee80211_radiotap(9) man page. TODO: Flesh out ieee80211_node.9, ieee80211_proto.9. Submitted by: bms (with help from Darron Broad)
103 lines
3.2 KiB
Groff
103 lines
3.2 KiB
Groff
.\"
|
|
.\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>
|
|
.\" Copyright (c) 2004 Darron Broad <darron@kewl.org>
|
|
.\" 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\" $Id: ieee80211_crypto.9,v 1.3 2004/03/04 10:42:56 bruce Exp $
|
|
.\"
|
|
.Dd March 2, 2004
|
|
.Dt ieee80211_crypto 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ieee80211_crypto
|
|
.Nd 802.11 WEP encryption functions
|
|
.Sh SYNOPSIS
|
|
.Ft void
|
|
.Fn ieee80211_crypto_attach "struct ifnet *ifp"
|
|
.Ft void
|
|
.Fn ieee80211_crypto_detach "struct ifnet *ifp"
|
|
.Ft struct mbuf *
|
|
.Fn ieee80211_wep_crypt "struct ifnet *ifp" "struct mbuf *m0" "int txflag"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
collection of functions provide software encryption support
|
|
for 802.11 device drivers.
|
|
.Pp
|
|
.\"
|
|
The
|
|
.Fn ieee80211_crypto_attach
|
|
function initializes crypto support for the interface
|
|
.Fa ifp ,
|
|
and sets the initialization vector (IV) for WEP encryption to
|
|
a random number derived from a secure PRNG.
|
|
.Pp
|
|
.\"
|
|
The
|
|
.Fn ieee80211_crypto_detach
|
|
function frees data structures associated with crypto support
|
|
for the interface
|
|
.Fa ifp .
|
|
.Pp
|
|
.\"
|
|
The
|
|
.Fn ieee80211_wep_crypt
|
|
function runs the appropriate WEP encryption algorithm over the 802.11
|
|
encapsulated frame held in the mbuf chain
|
|
.Fa m0 ,
|
|
for transmission or reception on the interface
|
|
.Fa ifp .
|
|
The
|
|
.Fa txflag
|
|
argument specifies whether the frame is being received or transmitted.
|
|
A value of 0 indicates that the frame is being received and should
|
|
therefore be decrypted; a non-zero value indicates that the frame
|
|
and should be encrypted.
|
|
.\"
|
|
.Sh IMPLEMENTATION NOTES
|
|
The
|
|
.Fn ieee80211_wep_crypt
|
|
function stores its IV in the interface's embedded
|
|
.Vt struct ieee80211com
|
|
instance.
|
|
.Sh SEE ALSO
|
|
.Xr awi 4 ,
|
|
.Xr wi 4 ,
|
|
.Xr arc4random 9 ,
|
|
.Xr ieee80211 9 ,
|
|
.Xr ifnet 9
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
series of functions first appeared in
|
|
.Nx 1.5 ,
|
|
and were later ported to
|
|
.Fx 4.6 .
|
|
.Sh AUTHORS
|
|
This man page was written by
|
|
.An Bruce M. Simpson Aq bms@FreeBSD.org
|
|
and
|
|
.An Darron Broad Aq darron@kewl.org .
|