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authorJouni Malinen <j@w1.fi>2010-03-30 10:35:23 +0400
committerJohn W. Linville <linville@tuxdriver.com>2010-03-31 22:46:42 +0400
commitecbcd3243651ae8ac2b73a96c320992a4cf01c5b (patch)
tree6bdb7da8ea5bdbffca4eb9246162e84dbc6b2b67 /net/mac80211/tx.c
parente69e95dbecfb73f76765cdd16dadc6219a9068e3 (diff)
downloadlinux-ecbcd3243651ae8ac2b73a96c320992a4cf01c5b.tar.xz
mac80211: Fix BIP to be used only with group-addressed frames
BIP (part of IEEE 802.11w) is only supposed to be used with group-addressed frames. We ended up picking it as a default mechanism for every management whenever we did not have a STA entry for the destination (e.g., for Probe Response to a STA that is not associated). While the extra MMIE in the end of management frames should not break frames completed in most cases, there is no point in doing this. Fix key selection to pick the default management key only if the frame is sent to multicast/broadcast address and the frame is a robust management frame. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 08e1f17a4226..350096afe79a 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -513,6 +513,8 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
else if (tx->sta && (key = rcu_dereference(tx->sta->key)))
tx->key = key;
else if (ieee80211_is_mgmt(hdr->frame_control) &&
+ is_multicast_ether_addr(hdr->addr1) &&
+ ieee80211_is_robust_mgmt_frame(hdr) &&
(key = rcu_dereference(tx->sdata->default_mgmt_key)))
tx->key = key;
else if ((key = rcu_dereference(tx->sdata->default_key)))