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orinoco: fix TKIP countermeasure behaviour

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Enable the port when disabling countermeasures, and disable it on
enabling countermeasures.

This bug causes the response of the system to certain attacks to be
ineffective.

It also prevents wpa_supplicant from getting scan results, as
wpa_supplicant disables countermeasures on startup - preventing the
hardware from scanning.

wpa_supplicant works with ap_mode=2 despite this bug because the commit
handler re-enables the port.

The log tends to look like:

State: DISCONNECTED -> SCANNING
Starting AP scan for wildcard SSID
Scan requested (ret=0) - scan timeout 5 seconds
EAPOL: disable timer tick
EAPOL: Supplicant port status: Unauthorized
Scan timeout - try to get results
Failed to get scan results
Failed to get scan results - try scanning again
Setting scan request: 1 sec 0 usec
Starting AP scan for wildcard SSID
Scan requested (ret=-1) - scan timeout 5 seconds
Failed to initiate AP scan.

Reported by: Giacomo Comes <comes@naic.edu>
Signed-off by: David Kilroy <kilroyd@googlemail.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
David Kilroy 2010-12-05 15:43:55 +00:00 committed by John W. Linville
parent ba34fcee47
commit 0a54917c3f
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/orinoco/wext.c
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@ -911,10 +911,10 @@ static int orinoco_ioctl_set_auth(struct net_device *dev,
*/
if (param->value) {
priv->tkip_cm_active = 1;
ret = hermes_enable_port(hw, 0);
ret = hermes_disable_port(hw, 0);
} else {
priv->tkip_cm_active = 0;
ret = hermes_disable_port(hw, 0);
ret = hermes_enable_port(hw, 0);
}
break;