'\" t
.\"     Title: ieee80211_find_sta_by_ifaddr
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Advanced driver interface
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "IEEE80211_FIND_STA_B" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Advanced driver interface"
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.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
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.SH "NAME"
ieee80211_find_sta_by_ifaddr \- find a station on hardware
.SH "SYNOPSIS"
.HP \w'struct\ ieee80211_sta\ *\ ieee80211_find_sta_by_ifaddr('u
.BI "struct ieee80211_sta * ieee80211_find_sta_by_ifaddr(struct\ ieee80211_hw\ *\ " "hw" ", const\ u8\ *\ " "addr" ", const\ u8\ *\ " "localaddr" ");"
.SH "ARGUMENTS"
.PP
\fIhw\fR
.RS 4
pointer as obtained from
\fBieee80211_alloc_hw\fR
.RE
.PP
\fIaddr\fR
.RS 4
remote station\*(Aqs address
.RE
.PP
\fIlocaladdr\fR
.RS 4
local address (vif\->sdata\->vif\&.addr)\&. Use NULL for \*(Aqany\*(Aq\&.
.RE
.SH "RETURN"
.PP
The station, if found\&.
\fBNULL\fR
otherwise\&.
.SH "NOTE"
.PP
This function must be called under RCU lock and the resulting pointer is only valid under RCU lock as well\&.
.SH "NOTE"
.PP
You may pass NULL for localaddr, but then you will just get the first STA that matches the remote address \*(Aqaddr\*(Aq\&. We can have multiple STA associated with multiple logical stations (e\&.g\&. consider a station connecting to another BSSID on the same AP hardware without disconnecting first)\&. In this case, the result of this method with localaddr NULL is not reliable\&.
.PP
DO NOT USE THIS FUNCTION with localaddr NULL if at all possible\&.
.SH "AUTHOR"
.PP
\fBJohannes Berg\fR <\&johannes@sipsolutions.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br