On Tue, Dec 14, 2010 at 10:41:33AM +0200, Jouni Malinen wrote:
> Add a new notification to indicate that a received, unprotected
> Deauthentication or Disassociation frame was dropped due to
> management frame protection being in use. This notification is
> needed to allow user space (e.g., wpa_supplicant) to implement
> SA Query procedure to recover from association state mismatch
> between an AP and STA.
>
> This is needed to avoid getting stuck in non-working state when MFP
> (IEEE 802.11w) is used and a protected Deauthentication or
> Disassociation frame is dropped for any reason. After that, the
> station would silently discard any unprotected Deauthentication or
> Disassociation frame that could be indicating that the AP does not
> have association for the STA (when the Reason Code would be 6 or 7).
> IEEE Std 802.11w-2009, 11.13 describes this recovery mechanism.
>
> Signed-off-by: Jouni Malinen <j@xxxxx>
>
> ---
> include/linux/nl80211.h | 10 ++++++++++
> net/mac80211/rx.c | 22 ++++++++++++++++++++--
> net/wireless/mlme.c | 22 ++++++++++++++++++++++
> net/wireless/nl80211.c | 16 ++++++++++++++++
> net/wireless/nl80211.h | 6 ++++++
> 5 files changed, 74 insertions(+), 2 deletions(-)
> --- wireless-testing.orig/net/wireless/mlme.c 2010-12-13 23:35:46.000000000 -0800
> +++ wireless-testing/net/wireless/mlme.c 2010-12-14 10:23:56.000000000 -0800
> @@ -263,6 +263,28 @@ void cfg80211_send_disassoc(struct net_d
> }
> EXPORT_SYMBOL(cfg80211_send_disassoc);
>
> +void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
> + size_t len)
> +{
> + struct wireless_dev *wdev = dev->ieee80211_ptr;
> + struct wiphy *wiphy = wdev->wiphy;
> + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
> +
> + nl80211_send_unprot_deauth(rdev, dev, buf, len, GFP_ATOMIC);
> +}
> +EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
> +
> +void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
> + size_t len)
> +{
> + struct wireless_dev *wdev = dev->ieee80211_ptr;
> + struct wiphy *wiphy = wdev->wiphy;
> + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
> +
> + nl80211_send_unprot_disassoc(rdev, dev, buf, len, GFP_ATOMIC);
> +}
> +EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
> +
> static void __cfg80211_auth_remove(struct wireless_dev *wdev, const u8 *addr)
> {
> int i;
Need cfg80211.h bits for these, no?
--
John W. Linville Someday the world will need a hero, and you
linville@xxxxxxxxxxxxx might be all we have. Be ready.
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