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mac80211: 802.11w - STA flag for MFP

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Add flags for setting STA entries and struct ieee80211_if_sta to
indicate whether management frame protection (MFP) is used.

Signed-off-by: Jouni Malinen <j@w1.fi>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jouni Malinen 2009-01-08 13:31:59 +02:00 committed by John W. Linville
parent 039498c6ec
commit 5394af4d86
7 changed files with 19 additions and 4 deletions
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2
include/linux/nl80211.h
View File

@ -412,12 +412,14 @@ enum nl80211_iftype {
* @NL80211_STA_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
* with short barker preamble
* @NL80211_STA_FLAG_WME: station is WME/QoS capable
* @NL80211_STA_FLAG_MFP: station uses management frame protection
*/
enum nl80211_sta_flags {
__NL80211_STA_FLAG_INVALID,
NL80211_STA_FLAG_AUTHORIZED,
NL80211_STA_FLAG_SHORT_PREAMBLE,
NL80211_STA_FLAG_WME,
NL80211_STA_FLAG_MFP,
/* keep last */
__NL80211_STA_FLAG_AFTER_LAST,

2
include/net/cfg80211.h
View File

@ -112,12 +112,14 @@ struct beacon_parameters {
* @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
* with short preambles
* @STATION_FLAG_WME: station is WME/QoS capable
* @STATION_FLAG_MFP: station uses management frame protection
*/
enum station_flags {
STATION_FLAG_CHANGED = 1<<0,
STATION_FLAG_AUTHORIZED = 1<<NL80211_STA_FLAG_AUTHORIZED,
STATION_FLAG_SHORT_PREAMBLE = 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
STATION_FLAG_WME = 1<<NL80211_STA_FLAG_WME,
STATION_FLAG_MFP = 1<<NL80211_STA_FLAG_MFP,
};
/**

4
net/mac80211/cfg.c
View File

@ -630,6 +630,10 @@ static void sta_apply_parameters(struct ieee80211_local *local,
sta->flags &= ~WLAN_STA_WME;
if (params->station_flags & STATION_FLAG_WME)
sta->flags |= WLAN_STA_WME;
sta->flags &= ~WLAN_STA_MFP;
if (params->station_flags & STATION_FLAG_MFP)
sta->flags |= WLAN_STA_MFP;
spin_unlock_bh(&sta->lock);
}

5
net/mac80211/debugfs_sta.c
View File

@ -67,14 +67,15 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
char buf[100];
struct sta_info *sta = file->private_data;
u32 staflags = get_sta_flags(sta);
int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s",
int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s",
staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
staflags & WLAN_STA_PS ? "PS\n" : "",
staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
staflags & WLAN_STA_WME ? "WME\n" : "",
staflags & WLAN_STA_WDS ? "WDS\n" : "");
staflags & WLAN_STA_WDS ? "WDS\n" : "",
staflags & WLAN_STA_MFP ? "MFP\n" : "");
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
STA_OPS(flags);

1
net/mac80211/ieee80211_i.h
View File

@ -260,6 +260,7 @@ struct mesh_preq_queue {
#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
#define IEEE80211_STA_TKIP_WEP_USED BIT(14)
#define IEEE80211_STA_CSA_RECEIVED BIT(15)
#define IEEE80211_STA_MFP_ENABLED BIT(16)
/* flags for MLME request */
#define IEEE80211_STA_REQ_SCAN 0
#define IEEE80211_STA_REQ_DIRECT_PROBE 1

7
net/mac80211/mlme.c
View File

@ -1,6 +1,6 @@
/*
* BSS client mode implementation
* Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
* Copyright 2003-2008, Jouni Malinen <j@w1.fi>
* Copyright 2004, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
@ -472,7 +472,7 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
ieee80211_tx_skb(sdata, skb, 0);
ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED);
}
/* MLME */
@ -1408,6 +1408,9 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
rate_control_rate_init(sta);
if (ifsta->flags & IEEE80211_STA_MFP_ENABLED)
set_sta_flags(sta, WLAN_STA_MFP);
if (elems.wmm_param)
set_sta_flags(sta, WLAN_STA_WME);

2
net/mac80211/sta_info.h
View File

@ -34,6 +34,7 @@
* @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the
* IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
* frame to this station is transmitted.
* @WLAN_STA_MFP: Management frame protection is used with this STA.
*/
enum ieee80211_sta_info_flags {
WLAN_STA_AUTH = 1<<0,
@ -46,6 +47,7 @@ enum ieee80211_sta_info_flags {
WLAN_STA_WDS = 1<<7,
WLAN_STA_PSPOLL = 1<<8,
WLAN_STA_CLEAR_PS_FILT = 1<<9,
WLAN_STA_MFP = 1<<10,
};
#define STA_TID_NUM 16