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mac80211: use IW_AUTH_PRIVACY_INVOKED rather than IW_AUTH_KEY_MGMT

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In the long bug-hunt for why dynamic WEP networks didn't work it
turned out that mac80211 incorrectly uses IW_AUTH_KEY_MGMT while
it should use IW_AUTH_PRIVACY_INVOKED to determine whether to
associate to protected networks or not.

This patch changes the behaviour to be that way and clarifies the
existing code.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2007-11-03 13:11:10 +00:00 committed by David S. Miller
parent 56db6c52bb
commit 5b98b1f7da
3 changed files with 21 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
net/mac80211/ieee80211_i.h
View file

@ -230,6 +230,7 @@ struct ieee80211_if_vlan {
#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
struct ieee80211_if_sta {
enum {
IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
@ -259,7 +260,6 @@ struct ieee80211_if_sta {
unsigned long request;
struct sk_buff_head skb_queue;
int key_management_enabled;
unsigned long last_probe;
#define IEEE80211_AUTH_ALG_OPEN BIT(0)

16
net/mac80211/ieee80211_ioctl.c
View file

@ -926,19 +926,21 @@ static int ieee80211_ioctl_siwauth(struct net_device *dev,
case IW_AUTH_CIPHER_GROUP:
case IW_AUTH_WPA_ENABLED:
case IW_AUTH_RX_UNENCRYPTED_EAPOL:
case IW_AUTH_PRIVACY_INVOKED:
break;
case IW_AUTH_KEY_MGMT:
break;
case IW_AUTH_PRIVACY_INVOKED:
if (sdata->type != IEEE80211_IF_TYPE_STA)
ret = -EINVAL;
else {
sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
/*
* Key management was set by wpa_supplicant,
* we only need this to associate to a network
* that has privacy enabled regardless of not
* having a key.
* Privacy invoked by wpa_supplicant, store the
* value and allow associating to a protected
* network without having a key up front.
*/
sdata->u.sta.key_management_enabled = !!data->value;
if (data->value)
sdata->u.sta.flags |=
IEEE80211_STA_PRIVACY_INVOKED;
}
break;
case IW_AUTH_80211_AUTH_ALG:

18
net/mac80211/ieee80211_sta.c
View file

@ -704,10 +704,11 @@ static int ieee80211_privacy_mismatch(struct net_device *dev,
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sta_bss *bss;
int res = 0;
int bss_privacy;
int wep_privacy;
int privacy_invoked;
if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL) ||
ifsta->key_management_enabled)
if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
return 0;
bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
@ -715,13 +716,16 @@ static int ieee80211_privacy_mismatch(struct net_device *dev,
if (!bss)
return 0;
if (ieee80211_sta_wep_configured(dev) !=
!!(bss->capability & WLAN_CAPABILITY_PRIVACY))
res = 1;
bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
wep_privacy = !!ieee80211_sta_wep_configured(dev);
privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
ieee80211_rx_bss_put(dev, bss);
return res;
if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
return 0;
return 1;
}