From: Johannes Berg <johannes.berg@xxxxxxxxx>
If there's an interface in AP mode, OBSS beacons
are needed by hostapd/wpa_s to implement logic to
enable/disable protection etc. Report the frames
and set the capability flag.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/ieee80211_i.h | 3 +++
net/mac80211/main.c | 3 ++-
net/mac80211/rx.c | 12 ++++++++++++
3 files changed, 17 insertions(+), 1 deletion(-)
--- a/net/mac80211/ieee80211_i.h 2011-10-21 13:45:46.000000000 +0200
+++ b/net/mac80211/ieee80211_i.h 2011-10-21 15:30:40.000000000 +0200
@@ -185,12 +185,15 @@ enum ieee80211_packet_rx_flags {
* enum ieee80211_rx_flags - RX data flags
*
* @IEEE80211_RX_CMNTR: received on cooked monitor already
+ * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
+ * to cfg80211_report_obss_beacon().
*
* These flags are used across handling multiple interfaces
* for a single frame.
*/
enum ieee80211_rx_flags {
IEEE80211_RX_CMNTR = BIT(0),
+ IEEE80211_RX_BEACON_REPORTED = BIT(1),
};
struct ieee80211_rx_data {
--- a/net/mac80211/main.c 2011-10-21 13:45:46.000000000 +0200
+++ b/net/mac80211/main.c 2011-10-21 15:30:40.000000000 +0200
@@ -595,7 +595,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(
wiphy->flags |= WIPHY_FLAG_NETNS_OK |
WIPHY_FLAG_4ADDR_AP |
- WIPHY_FLAG_4ADDR_STATION;
+ WIPHY_FLAG_4ADDR_STATION |
+ WIPHY_FLAG_REPORTS_OBSS;
wiphy->features = NL80211_FEATURE_SK_TX_STATUS;
--- a/net/mac80211/rx.c 2011-10-21 13:45:46.000000000 +0200
+++ b/net/mac80211/rx.c 2011-10-21 16:19:29.000000000 +0200
@@ -2177,6 +2177,18 @@ ieee80211_rx_h_mgmt_check(struct ieee802
if (!ieee80211_is_mgmt(mgmt->frame_control))
return RX_DROP_MONITOR;
+ if (rx->sdata->vif.type == NL80211_IFTYPE_AP &&
+ ieee80211_is_beacon(mgmt->frame_control) &&
+ !(rx->flags & IEEE80211_RX_BEACON_REPORTED)) {
+ struct ieee80211_rx_status *status;
+
+ status = IEEE80211_SKB_RXCB(rx->skb);
+ cfg80211_report_obss_beacon(rx->local->hw.wiphy,
+ rx->skb->data, rx->skb->len,
+ status->freq, GFP_ATOMIC);
+ rx->flags |= IEEE80211_RX_BEACON_REPORTED;
+ }
+
if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
return RX_DROP_MONITOR;
--
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