+
+static void
+ath5k_check_ibss_hw_merge(struct ath5k_softc *sc, struct sk_buff *skb)
+{
+ u32 hw_tu;
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+
+ if ((mgmt->frame_control & IEEE80211_FCTL_FTYPE) ==
+ IEEE80211_FTYPE_MGMT &&
+ (mgmt->frame_control & IEEE80211_FCTL_STYPE) ==
+ IEEE80211_STYPE_BEACON &&
+ mgmt->u.beacon.capab_info & WLAN_CAPABILITY_IBSS &&
+ memcmp(mgmt->bssid, sc->ah->ah_bssid, ETH_ALEN) == 0) {
+ /*
+ * Received an IBSS beacon with the same BSSID. Hardware might
+ * have updated the TSF, check if we need to update timers.
+ */
+ hw_tu = TSF_TO_TU(ath5k_hw_get_tsf64(sc->ah));
+ if (hw_tu >= sc->nexttbtt) {
+ ath5k_beacon_update_timers(sc,
+ mgmt->u.beacon.timestamp);
+ ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
+ "detected HW merge from received beacon\n");
+ }
+ }
+}
+
+