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114 lines
3.5 KiB
Groff
114 lines
3.5 KiB
Groff
.\"
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.\" Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>
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.\" Copyright (c) 2004 Darron Broad <darron@kewl.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\" $Id: ieee80211_input.9,v 1.6 2004/03/04 12:33:27 bruce Exp $
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.\"
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.Dd March 2, 2004
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.Dt IEEE80211_INPUT 9
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.Os
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.Sh NAME
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.Nm ieee80211_input , ieee80211_decap , ieee80211_recv_mgmt
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.Nd software 802.11 stack input functions
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.Sh SYNOPSIS
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.In net80211/ieee80211_var.h
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.In net80211/ieee80211_proto.h
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.Ft void
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.Fo ieee80211_input
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.Fa "struct ifnet *ifp" "struct mbuf *m" "struct ieee80211_node *ni"
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.Fa "int rssi" "u_int32_t rstamp"
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.Fc
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.Ft struct mbuf *
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.Fn ieee80211_decap "struct ifnet *ifp" "struct mbuf *m"
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.Ft void
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.Fo ieee80211_recv_mgmt
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.Fa "struct ieee80211com *ic" "struct mbuf *m0" "struct ieee80211_node *ni"
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.Fa "int subtype" "int rssi" "u_int32_t rstamp"
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.Fc
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.Sh DESCRIPTION
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These
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functions process received 802.11 frames.
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.Pp
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.\"
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The
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.Fn ieee80211_input
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function takes an mbuf chain
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.Fa m
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containing a complete 802.11 frame from the driver
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.Fa ifp
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and passes it to the software 802.11 stack for input processing.
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The
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.Fa ni
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argument specifies an instance of
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.Vt struct ieee80211_node
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(which may be driver-specific) representing the node from which the
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frame was received.
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The arguments
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.Fa rssi
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and
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.Fa stamp
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are typically derived from on-card data structures; they are used for
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recording the signal strength and time received of the frame respectively.
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.Pp
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.\"
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The
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.Fn ieee80211_decap
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function performs decapsulation of the 802.11 frame in the mbuf chain
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.Fa m
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received by the device
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.Fa ifp ,
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taking the form of the 802.11 address fields into account;
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the structure of 802.11 addresses vary according to the intended
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source and destination of the frame.
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It is typically called from within
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.Fn ieee80211_input .
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.Pp
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.\"
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The
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.Fn ieee80211_recv_mgmt
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performs input processing for 802.11 management frames.
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It is typically called from within
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.Fn ieee80211_input .
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.\"
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.Sh SEE ALSO
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.Xr ieee80211 9 ,
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.Xr ifnet 9
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.Sh HISTORY
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The
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.Nm ieee80211
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series of functions first appeared in
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.Nx 1.5 ,
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and were later ported to
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.Fx 4.6 .
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.Sh AUTHORS
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.An -nosplit
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This manual page was written by
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.An Bruce M. Simpson Aq bms@FreeBSD.org
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and
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.An Darron Broad Aq darron@kewl.org .
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.Sh BUGS
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There is no netisr queue specifically for the software 802.11 stack yet.
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