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Add David Young's descriptive text for the radiotap interface.

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Add David Young to copyright comments.
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Bruce M Simpson 2004-03-31 02:57:30 +00:00
parent 25d9d0de41
commit 0c22b2b981
1 changed files with 20 additions and 2 deletions
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22
share/man/man9/ieee80211_radiotap.9
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@ -1,6 +1,7 @@
.\"
.\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>
.\" Copyright (c) 2004 Darron Broad <darron@kewl.org>
.\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>,
.\" Darron Broad <darron@kewl.org>,
.\" David Young <dyoung@pobox.com>.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
@ -48,6 +49,22 @@ attachment for the
capture of information about 802.11 traffic which is not part of
the 802.11 frame structure.
.Pp
Radiotap was designed to balance the desire for a capture format
that conserved CPU and memory bandwidth on embedded systems,
with the desire for a hardware-independent, extensible format
that would support the diverse capabilities of virtually all
.Vt 802.11
radios.
.Pp
These considerations led radiotap to settle on a format consisting of
a standard preamble followed by an extensible bitmap indicating the
presence of optional capture fields.
.Pp
The capture fields were packed into the header as compactly as possible,
modulo the requirements that they had to be packed swiftly,
with suitable alignment, in the same order as the bits indicating
their presence.
.Pp
This typically includes information such as signal quality and
timestamps.
This information may be used by a variety of user agents, including
@ -202,6 +219,7 @@ definitions first appeared in
.Nx 1.5 ,
and were later ported to
.Fx 4.6 .
.\"
.Sh AUTHORS
The
.Nm