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authorJouni Malinen <jouni@codeaurora.org>2020-04-01 17:25:47 +0300
committerJohannes Berg <johannes.berg@intel.com>2020-04-24 12:33:40 +0200
commit4d797fce783a8eb11dd23463828db84743795046 (patch)
tree94ebbe81ef2a0185e8f4de273d648fd9d7ed1e15 /net/wireless
parent90e8f58dfc04d1bd48ca155cc55ebf7ba1824864 (diff)
cfg80211: Unprotected Beacon frame RX indication
Extend cfg80211_rx_unprot_mlme_mgmt() to cover indication of unprotected Beacon frames in addition to the previously used Deauthentication and Disassociation frames. The Beacon frame case is quite similar, but has couple of exceptions: this is used both with fully unprotected and also incorrectly protected frames and there is a rate limit on the events to avoid unnecessary flooding netlink events in case something goes wrong. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200401142548.6990-1-jouni@codeaurora.org [add missing kernel-doc] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c13
-rw-r--r--net/wireless/sme.c2
2 files changed, 13 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 692bcd35f809..2127e5344b1a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -15542,10 +15542,19 @@ void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
if (WARN_ON(len < 2))
return;
- if (ieee80211_is_deauth(mgmt->frame_control))
+ if (ieee80211_is_deauth(mgmt->frame_control)) {
cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
- else
+ } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
+ } else if (ieee80211_is_beacon(mgmt->frame_control)) {
+ if (wdev->unprot_beacon_reported &&
+ elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
+ return;
+ cmd = NL80211_CMD_UNPROT_BEACON;
+ wdev->unprot_beacon_reported = jiffies;
+ } else {
+ return;
+ }
trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index ac3e60aa1fc8..3554c0d951f4 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -694,6 +694,7 @@ void __cfg80211_connect_result(struct net_device *dev,
return;
}
+ wdev->unprot_beacon_reported = 0;
nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr,
GFP_KERNEL);
@@ -921,6 +922,7 @@ void __cfg80211_roamed(struct wireless_dev *wdev,
cfg80211_hold_bss(bss_from_pub(info->bss));
wdev->current_bss = bss_from_pub(info->bss);
+ wdev->unprot_beacon_reported = 0;
nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
wdev->netdev, info, GFP_KERNEL);