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mac80211: avoid spurious deauth frames/messages

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With WEXT, it happens frequently that the SME
requests an authentication but then deauthenticates
right away because some new parameters came along.
Every time this happens we print a deauth message
and send a deauth frame, but both of that is rather
confusing. Avoid it by aborting the authentication
process silently, and telling cfg80211 about that.

The patch looks larger than it really is:
__cfg80211_auth_remove() is split out from
cfg80211_send_auth_timeout(), there's no new code
except __cfg80211_auth_canceled() (a one-liner) and
the mac80211 bits (7 new lines of code).

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-11-19 12:45:42 +01:00
committed by John W. Linville
parent 7351c6bd48
commit a58ce43f2f
3 changed files with 54 additions and 11 deletions
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12
include/net/cfg80211.h
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@@ -1838,6 +1838,18 @@ void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
*/
void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr);
/**
* __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled
* @dev: network device
* @addr: The MAC address of the device with which the authentication timed out
*
* When a pending authentication had no action yet, the driver may decide
* to not send a deauth frame, but in that case must calls this function
* to tell cfg80211 about this decision. It is only valid to call this
* function within the deauth() callback.
*/
void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr);
/**
* cfg80211_send_rx_assoc - notification of processed association
* @dev: network device