Copyright (c) 2004 Bruce M. Simpson <bms@spc.org>
Copyright (c) 2004 Darron Broad <darron@kewl.org>
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$FreeBSD: head/share/man/man9/ieee80211_input.9 126596 2004-03-04 12:52:10Z bms $
$Id: ieee80211_input.9,v 1.6 2004/03/04 12:33:27 bruce Exp $

.Dd March 2, 2004 .Dt ieee80211 9 .Os .Sh NAME .Nm ieee80211 .Nd core 802.11 network stack functions .Sh SYNOPSIS n net80211/ieee80211_var.h n net80211/ieee80211_proto.h .Ft void .Fn ieee80211_input "struct ifnet *ifp" "struct mbuf *m" "struct ieee80211_node *ni" "int rssi" "u_int32_t rstamp" .Ft struct mbuf * .Fn ieee80211_decap "struct ifnet *ifp" "struct mbuf *m" .Ft void .Fn ieee80211_recv_mgmt "struct ieee80211com *ic" "struct mbuf *m0" "struct ieee80211_node *ni" "int subtype" "int rssi" "u_int32_t rstamp" .Sh DESCRIPTION The .Nm functions process received 802.11 frames.

p
The .Fn ieee80211_input function takes an mbuf chain .Fa m containing a complete 802.11 frame from the driver .Fa ifp and passes it to the software 802.11 stack for input processing. The .Fa ni argument specifies an instance of .Vt struct ieee80211_node (which may be driver-specific) representing the node from which the frame was received. The arguments .Fa rssi and .Fa stamp are typically derived from on-card data structures; they are used for recording the signal strength and time received of the frame respectively.

p
The .Fn ieee80211_decap function performs decapsulation of the 802.11 frame in the mbuf chain .Fa m received by the device .Fa ifp , taking the form of the 802.11 address fields into account; the structure of 802.11 addresses vary according to the intended source and destination of the frame. It is typically called from within .Fn ieee80211_input .

p
The .Fn ieee80211_recv_mgmt performs input processing for 802.11 management frames. It is typically called from within .Fn ieee80211_input .

p
.Sh SEE ALSO .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 . .Sh BUGS There is no netisr queue specifically for the software 802.11 stack yet.