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cfg80211: Support key configuration for Beacon protection (BIGTK)

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IEEE P802.11-REVmd/D3.0 adds support for protecting Beacon frames using
a new set of keys (BIGTK; key index 6..7) similarly to the way
group-addressed Robust Management frames are protected (IGTK; key index
4..5). Extend cfg80211 and nl80211 to allow the new BIGTK to be
configured. Add an extended feature flag to indicate driver support for
the new key index values to avoid array overflows in driver
implementations and also to indicate to user space when this
functionality is available.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200222132548.20835-2-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen
2020-02-22 15:25:43 +02:00
committed by Johannes Berg
parent f8af764bf1
commit 56be393fa8
7 changed files with 101 additions and 14 deletions
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11
net/wireless/sme.c
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@@ -1111,9 +1111,16 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
* Delete all the keys ... pairwise keys can't really
* exist any more anyway, but default keys might.
*/
if (rdev->ops->del_key)
for (i = 0; i < 6; i++)
if (rdev->ops->del_key) {
int max_key_idx = 5;
if (wiphy_ext_feature_isset(
wdev->wiphy,
NL80211_EXT_FEATURE_BEACON_PROTECTION))
max_key_idx = 7;
for (i = 0; i <= max_key_idx; i++)
rdev_del_key(rdev, dev, i, false, NULL);
}
rdev_set_qos_map(rdev, dev, NULL);