59bbb6f757
Currently, there's a problem that affects regulatory enforcement and connection stability, in that it is possible to switch the channel while connected to a network or joined to an IBSS. The problem comes from the fact that we only validate the channel against the current interface's type, not against any other interface. Thus, you have any type of interface up, additionally bring up a monitor mode interface and switch the channel on the monitor. This will obviously also switch the channel on the other interface. The problem now is that if you do that while sending beacons for IBSS mode, you can switch to a disabled channel or a channel that doesn't allow beaconing. Combined with a managed mode interface connected to an AP instead of an IBSS interface, you can easily break the connection that way. To fix this, this patch validates any channel change with all available interfaces, and disallows such changes on secondary interfaces if another interface is connected to an AP or joined to an IBSS. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#ifndef __WEXT_COMPAT
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#define __WEXT_COMPAT
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#include <net/iw_handler.h>
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#include <linux/wireless.h>
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int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra);
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int cfg80211_ibss_wext_giwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra);
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int cfg80211_ibss_wext_siwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra);
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int cfg80211_ibss_wext_giwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra);
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int cfg80211_ibss_wext_siwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid);
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int cfg80211_ibss_wext_giwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid);
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int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra);
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int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_freq *freq, char *extra);
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int cfg80211_mgd_wext_siwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra);
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int cfg80211_mgd_wext_giwap(struct net_device *dev,
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struct iw_request_info *info,
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struct sockaddr *ap_addr, char *extra);
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int cfg80211_mgd_wext_siwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid);
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int cfg80211_mgd_wext_giwessid(struct net_device *dev,
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struct iw_request_info *info,
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struct iw_point *data, char *ssid);
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int cfg80211_wext_freq(struct wiphy *wiphy, struct iw_freq *freq);
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extern const struct iw_handler_def cfg80211_wext_handler;
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#endif /* __WEXT_COMPAT */
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