'\" t
.\"     Title: enum ieee80211_key_flags
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Advanced driver interface
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ENUM IEEE80211_KEY_F" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Advanced driver interface"
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.SH "NAME"
enum_ieee80211_key_flags \- key flags
.SH "SYNOPSIS"
.sp
.nf
enum ieee80211_key_flags {
  IEEE80211_KEY_FLAG_GENERATE_IV_MGMT,
  IEEE80211_KEY_FLAG_GENERATE_IV,
  IEEE80211_KEY_FLAG_GENERATE_MMIC,
  IEEE80211_KEY_FLAG_PAIRWISE,
  IEEE80211_KEY_FLAG_SW_MGMT_TX,
  IEEE80211_KEY_FLAG_PUT_IV_SPACE,
  IEEE80211_KEY_FLAG_RX_MGMT,
  IEEE80211_KEY_FLAG_RESERVE_TAILROOM
};  
.fi
.SH "CONSTANTS"
.PP
IEEE80211_KEY_FLAG_GENERATE_IV_MGMT
.RS 4
This flag should be set by the driver for a CCMP/GCMP key to indicate that is requires IV generation only for managment frames (MFP)\&.
.RE
.PP
IEEE80211_KEY_FLAG_GENERATE_IV
.RS 4
This flag should be set by the driver to indicate that it requires IV generation for this particular key\&. Setting this flag does not necessarily mean that SKBs will have sufficient tailroom for ICV or MIC\&.
.RE
.PP
IEEE80211_KEY_FLAG_GENERATE_MMIC
.RS 4
This flag should be set by the driver for a TKIP key if it requires Michael MIC generation in software\&.
.RE
.PP
IEEE80211_KEY_FLAG_PAIRWISE
.RS 4
Set by mac80211, this flag indicates that the key is pairwise rather then a shared key\&.
.RE
.PP
IEEE80211_KEY_FLAG_SW_MGMT_TX
.RS 4
This flag should be set by the driver for a CCMP/GCMP key if it requires CCMP/GCMP encryption of management frames (MFP) to be done in software\&.
.RE
.PP
IEEE80211_KEY_FLAG_PUT_IV_SPACE
.RS 4
This flag should be set by the driver if space should be prepared for the IV, but the IV itself should not be generated\&. Do not set together with
\fIIEEE80211_KEY_FLAG_GENERATE_IV\fR
on the same key\&. Setting this flag does not necessarily mean that SKBs will have sufficient tailroom for ICV or MIC\&.
.RE
.PP
IEEE80211_KEY_FLAG_RX_MGMT
.RS 4
This key will be used to decrypt received management frames\&. The flag can help drivers that have a hardware crypto implementation that doesn\*(Aqt deal with management frames properly by allowing them to not upload the keys to hardware and fall back to software crypto\&. Note that this flag deals only with RX, if your crypto engine can\*(Aqt deal with TX you can also set the
\fBIEEE80211_KEY_FLAG_SW_MGMT_TX\fR
flag to encrypt such frames in SW\&.
.RE
.PP
IEEE80211_KEY_FLAG_RESERVE_TAILROOM
.RS 4
This flag should be set by the driver for a key to indicate that sufficient tailroom must always be reserved for ICV or MIC, even when HW encryption is enabled\&.
.RE
.SH "DESCRIPTION"
.PP
.PP
These flags are used for communication about keys between the driver and mac80211, with the
\fIflags\fR
parameter of
struct ieee80211_key_conf\&.
.SH "AUTHOR"
.PP
\fBJohannes Berg\fR <\&johannes@sipsolutions.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br