'\" t
.\"     Title: enum ieee80211_filter_flags
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: The basic mac80211 driver interface
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "ENUM IEEE80211_FILTE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "The basic mac80211 driver inte"
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.SH "NAME"
enum_ieee80211_filter_flags \- hardware filter flags
.SH "SYNOPSIS"
.sp
.nf
enum ieee80211_filter_flags {
  FIF_PROMISC_IN_BSS,
  FIF_ALLMULTI,
  FIF_FCSFAIL,
  FIF_PLCPFAIL,
  FIF_BCN_PRBRESP_PROMISC,
  FIF_CONTROL,
  FIF_OTHER_BSS,
  FIF_PSPOLL,
  FIF_PROBE_REQ
};  
.fi
.SH "CONSTANTS"
.PP
FIF_PROMISC_IN_BSS
.RS 4
promiscuous mode within your BSS, think of the BSS as your network segment and then this corresponds to the regular ethernet device promiscuous mode\&.
.RE
.PP
FIF_ALLMULTI
.RS 4
pass all multicast frames, this is used if requested by the user or if the hardware is not capable of filtering by multicast address\&.
.RE
.PP
FIF_FCSFAIL
.RS 4
pass frames with failed FCS (but you need to set the
\fBRX_FLAG_FAILED_FCS_CRC\fR
for them)
.RE
.PP
FIF_PLCPFAIL
.RS 4
pass frames with failed PLCP CRC (but you need to set the
\fBRX_FLAG_FAILED_PLCP_CRC\fR
for them
.RE
.PP
FIF_BCN_PRBRESP_PROMISC
.RS 4
This flag is set during scanning to indicate to the hardware that it should not filter beacons or probe responses by BSSID\&. Filtering them can greatly reduce the amount of processing mac80211 needs to do and the amount of CPU wakeups, so you should honour this flag if possible\&.
.RE
.PP
FIF_CONTROL
.RS 4
pass control frames (except for PS Poll), if PROMISC_IN_BSS is not set then only those addressed to this station\&.
.RE
.PP
FIF_OTHER_BSS
.RS 4
pass frames destined to other BSSes
.RE
.PP
FIF_PSPOLL
.RS 4
pass PS Poll frames, if PROMISC_IN_BSS is not set then only those addressed to this station\&.
.RE
.PP
FIF_PROBE_REQ
.RS 4
pass probe request frames
.RE
.SH "HW QUEUE CONTROL"
.PP
.PP
These flags determine what the filter in hardware should be programmed to let through and what should not be passed to the stack\&. It is always safe to pass more frames than requested, but this has negative impact on power consumption\&.
.SH "AUTHOR"
.PP
\fBJohannes Berg\fR <\&johannes@sipsolutions.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br