cfg80211 API for channels/bitrates, mac80211 and driver conversion

This patch creates new cfg80211 wiphy API for channel and bitrate
registration and converts mac80211 and drivers to the new API. The
old mac80211 API is completely ripped out. All drivers (except ath5k)
are updated to the new API, in many cases I expect that optimisations
can be done.

Along with the regulatory code I've also ripped out the
IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be
unnecessary if the hardware simply gives us whatever channels it wants
to support and we then enable/disable them as required, which is pretty
much required for travelling.

Additionally, the patch adds proper "basic" rate handling for STA
mode interface, AP mode interface will have to have new API added
to allow userspace to set the basic rate set, currently it'll be
empty... However, the basic rate handling will need to be moved to
the BSS conf stuff.

I do expect there to be bugs in this, especially wrt. transmit
power handling where I'm basically clueless about how it should work.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 208 insertions, 176 deletions

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index d0273ccbdbae..2628222a5085 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -74,7 +74,7 @@
 static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 				     u8 *ssid, size_t ssid_len);
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
 		     u8 *ssid, u8 ssid_len);
 static void ieee80211_rx_bss_put(struct net_device *dev,
 				 struct ieee80211_sta_bss *bss);
@@ -466,7 +466,7 @@ static void ieee80211_set_associated(struct net_device *dev,
 			return;
 
 		bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
-					   local->hw.conf.channel,
+					   local->hw.conf.channel->center_freq,
 					   ifsta->ssid, ifsta->ssid_len);
 		if (bss) {
 			if (bss->has_erp_value)
@@ -593,7 +593,6 @@ static void ieee80211_send_assoc(struct net_device *dev,
 				 struct ieee80211_if_sta *ifsta)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-	struct ieee80211_hw_mode *mode;
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	u8 *pos, *ies;
@@ -601,6 +600,7 @@ static void ieee80211_send_assoc(struct net_device *dev,
 	u16 capab;
 	struct ieee80211_sta_bss *bss;
 	int wmm = 0;
+	struct ieee80211_supported_band *sband;
 
 	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
 			    sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
@@ -612,13 +612,19 @@ static void ieee80211_send_assoc(struct net_device *dev,
 	}
 	skb_reserve(skb, local->hw.extra_tx_headroom);
 
-	mode = local->oper_hw_mode;
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
 	capab = ifsta->capab;
-	if (mode->mode == MODE_IEEE80211G) {
-		capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
-			WLAN_CAPABILITY_SHORT_PREAMBLE;
+
+	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
+		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+			capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+		if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+			capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
 	}
-	bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+				   local->hw.conf.channel->center_freq,
 				   ifsta->ssid, ifsta->ssid_len);
 	if (bss) {
 		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
@@ -657,23 +663,23 @@ static void ieee80211_send_assoc(struct net_device *dev,
 	*pos++ = ifsta->ssid_len;
 	memcpy(pos, ifsta->ssid, ifsta->ssid_len);
 
-	len = mode->num_rates;
+	len = sband->n_bitrates;
 	if (len > 8)
 		len = 8;
 	pos = skb_put(skb, len + 2);
 	*pos++ = WLAN_EID_SUPP_RATES;
 	*pos++ = len;
 	for (i = 0; i < len; i++) {
-		int rate = mode->rates[i].rate;
+		int rate = sband->bitrates[i].bitrate;
 		*pos++ = (u8) (rate / 5);
 	}
 
-	if (mode->num_rates > len) {
-		pos = skb_put(skb, mode->num_rates - len + 2);
+	if (sband->n_bitrates > len) {
+		pos = skb_put(skb, sband->n_bitrates - len + 2);
 		*pos++ = WLAN_EID_EXT_SUPP_RATES;
-		*pos++ = mode->num_rates - len;
-		for (i = len; i < mode->num_rates; i++) {
-			int rate = mode->rates[i].rate;
+		*pos++ = sband->n_bitrates - len;
+		for (i = len; i < sband->n_bitrates; i++) {
+			int rate = sband->bitrates[i].bitrate;
 			*pos++ = (u8) (rate / 5);
 		}
 	}
@@ -696,17 +702,18 @@ static void ieee80211_send_assoc(struct net_device *dev,
 		*pos++ = 0;
 	}
 	/* wmm support is a must to HT */
-	if (wmm && mode->ht_info.ht_supported) {
-		__le16 tmp = cpu_to_le16(mode->ht_info.cap);
+	if (wmm && sband->ht_info.ht_supported) {
+		__le16 tmp = cpu_to_le16(sband->ht_info.cap);
 		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
 		*pos++ = WLAN_EID_HT_CAPABILITY;
 		*pos++ = sizeof(struct ieee80211_ht_cap);
 		memset(pos, 0, sizeof(struct ieee80211_ht_cap));
 		memcpy(pos, &tmp, sizeof(u16));
 		pos += sizeof(u16);
-		*pos++ = (mode->ht_info.ampdu_factor |
-				(mode->ht_info.ampdu_density << 2));
-		memcpy(pos, mode->ht_info.supp_mcs_set, 16);
+		/* TODO: needs a define here for << 2 */
+		*pos++ = sband->ht_info.ampdu_factor |
+			 (sband->ht_info.ampdu_density << 2);
+		memcpy(pos, sband->ht_info.supp_mcs_set, 16);
 	}
 
 	kfree(ifsta->assocreq_ies);
@@ -789,7 +796,8 @@ static int ieee80211_privacy_mismatch(struct net_device *dev,
 	if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
 		return 0;
 
-	bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+				   local->hw.conf.channel->center_freq,
 				   ifsta->ssid, ifsta->ssid_len);
 	if (!bss)
 		return 0;
@@ -899,7 +907,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 				     u8 *ssid, size_t ssid_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-	struct ieee80211_hw_mode *mode;
+	struct ieee80211_supported_band *sband;
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	u8 *pos, *supp_rates, *esupp_rates = NULL;
@@ -933,11 +941,10 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 	supp_rates = skb_put(skb, 2);
 	supp_rates[0] = WLAN_EID_SUPP_RATES;
 	supp_rates[1] = 0;
-	mode = local->oper_hw_mode;
-	for (i = 0; i < mode->num_rates; i++) {
-		struct ieee80211_rate *rate = &mode->rates[i];
-		if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
-			continue;
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+	for (i = 0; i < sband->n_bitrates; i++) {
+		struct ieee80211_rate *rate = &sband->bitrates[i];
 		if (esupp_rates) {
 			pos = skb_put(skb, 1);
 			esupp_rates[1]++;
@@ -950,7 +957,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 			pos = skb_put(skb, 1);
 			supp_rates[1]++;
 		}
-		*pos = rate->rate / 5;
+		*pos = rate->bitrate / 5;
 	}
 
 	ieee80211_sta_tx(dev, skb, 0);
@@ -1146,9 +1153,11 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
 	}
 	/* determine default buffer size */
 	if (buf_size == 0) {
-		struct ieee80211_hw_mode *mode = conf->mode;
+		struct ieee80211_supported_band *sband;
+
+		sband = local->hw.wiphy->bands[conf->channel->band];
 		buf_size = IEEE80211_MIN_AMPDU_BUF;
-		buf_size = buf_size << mode->ht_info.ampdu_factor;
+		buf_size = buf_size << sband->ht_info.ampdu_factor;
 	}
 
 	tid_agg_rx = &sta->ampdu_mlme.tid_rx[tid];
@@ -1718,15 +1727,16 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 {
 	struct ieee80211_local *local = sdata->local;
 	struct net_device *dev = sdata->dev;
-	struct ieee80211_hw_mode *mode;
+	struct ieee80211_supported_band *sband;
 	struct sta_info *sta;
-	u32 rates;
+	u64 rates, basic_rates;
 	u16 capab_info, status_code, aid;
 	struct ieee802_11_elems elems;
 	struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
 	u8 *pos;
 	int i, j;
 	DECLARE_MAC_BUF(mac);
+	bool have_higher_than_11mbit = false;
 
 	/* AssocResp and ReassocResp have identical structure, so process both
 	 * of them in this function. */
@@ -1796,10 +1806,6 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	if (ifsta->assocresp_ies)
 		memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
 
-	/* set AID, ieee80211_set_associated() will tell the driver */
-	bss_conf->aid = aid;
-	ieee80211_set_associated(dev, ifsta, 1);
-
 	/* Add STA entry for the AP */
 	sta = sta_info_get(local, ifsta->bssid);
 	if (!sta) {
@@ -1811,7 +1817,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 			return;
 		}
 		bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
-					   local->hw.conf.channel,
+					   local->hw.conf.channel->center_freq,
 					   ifsta->ssid, ifsta->ssid_len);
 		if (bss) {
 			sta->last_rssi = bss->rssi;
@@ -1825,20 +1831,46 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP;
 
 	rates = 0;
-	mode = local->oper_hw_mode;
+	basic_rates = 0;
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
 	for (i = 0; i < elems.supp_rates_len; i++) {
 		int rate = (elems.supp_rates[i] & 0x7f) * 5;
-		for (j = 0; j < mode->num_rates; j++)
-			if (mode->rates[j].rate == rate)
+
+		if (rate > 110)
+			have_higher_than_11mbit = true;
+
+		for (j = 0; j < sband->n_bitrates; j++) {
+			if (sband->bitrates[j].bitrate == rate)
 				rates |= BIT(j);
+			if (elems.supp_rates[i] & 0x80)
+				basic_rates |= BIT(j);
+		}
 	}
+
 	for (i = 0; i < elems.ext_supp_rates_len; i++) {
 		int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
-		for (j = 0; j < mode->num_rates; j++)
-			if (mode->rates[j].rate == rate)
+
+		if (rate > 110)
+			have_higher_than_11mbit = true;
+
+		for (j = 0; j < sband->n_bitrates; j++) {
+			if (sband->bitrates[j].bitrate == rate)
 				rates |= BIT(j);
+			if (elems.ext_supp_rates[i] & 0x80)
+				basic_rates |= BIT(j);
+		}
 	}
-	sta->supp_rates = rates;
+
+	sta->supp_rates[local->hw.conf.channel->band] = rates;
+	sdata->basic_rates = basic_rates;
+
+	/* cf. IEEE 802.11 9.2.12 */
+	if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+	    have_higher_than_11mbit)
+		sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+	else
+		sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
 
 	if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
 	    local->ops->conf_ht) {
@@ -1861,6 +1893,9 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 					 elems.wmm_param_len);
 	}
 
+	/* set AID, ieee80211_set_associated() will tell the driver */
+	bss_conf->aid = aid;
+	ieee80211_set_associated(dev, ifsta, 1);
 
 	sta_info_put(sta);
 
@@ -1901,7 +1936,7 @@ static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
 
 
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq,
 		     u8 *ssid, u8 ssid_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@@ -1913,7 +1948,7 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
 	atomic_inc(&bss->users);
 	atomic_inc(&bss->users);
 	memcpy(bss->bssid, bssid, ETH_ALEN);
-	bss->channel = channel;
+	bss->freq = freq;
 	if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
 		memcpy(bss->ssid, ssid, ssid_len);
 		bss->ssid_len = ssid_len;
@@ -1929,7 +1964,7 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
 
 
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
 		     u8 *ssid, u8 ssid_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@@ -1939,7 +1974,7 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
 	bss = local->sta_bss_hash[STA_HASH(bssid)];
 	while (bss) {
 		if (!memcmp(bss->bssid, bssid, ETH_ALEN) &&
-		    bss->channel == channel &&
+		    bss->freq == freq &&
 		    bss->ssid_len == ssid_len &&
 		    (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
 			atomic_inc(&bss->users);
@@ -2004,7 +2039,7 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee802_11_elems elems;
 	size_t baselen;
-	int channel, clen;
+	int freq, clen;
 	struct ieee80211_sta_bss *bss;
 	struct sta_info *sta;
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -2055,26 +2090,22 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 	if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
 	    memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
 	    (sta = sta_info_get(local, mgmt->sa))) {
-		struct ieee80211_hw_mode *mode;
-		struct ieee80211_rate *rates;
+		struct ieee80211_supported_band *sband;
+		struct ieee80211_rate *bitrates;
 		size_t num_rates;
-		u32 supp_rates, prev_rates;
+		u64 supp_rates, prev_rates;
 		int i, j;
 
-		mode = local->sta_sw_scanning ?
-		       local->scan_hw_mode : local->oper_hw_mode;
-
-		if (local->sta_hw_scanning) {
-			/* search for the correct mode matches the beacon */
-			list_for_each_entry(mode, &local->modes_list, list)
-				if (mode->mode == rx_status->phymode)
-					break;
+		sband = local->hw.wiphy->bands[rx_status->band];
 
-			if (mode == NULL)
-				mode = local->oper_hw_mode;
+		if (!sband) {
+			WARN_ON(1);
+			sband = local->hw.wiphy->bands[
+					local->hw.conf.channel->band];
 		}
-		rates = mode->rates;
-		num_rates = mode->num_rates;
+
+		bitrates = sband->bitrates;
+		num_rates = sband->n_bitrates;
 
 		supp_rates = 0;
 		for (i = 0; i < elems.supp_rates_len +
@@ -2088,24 +2119,27 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 					[i - elems.supp_rates_len];
 			own_rate = 5 * (rate & 0x7f);
 			for (j = 0; j < num_rates; j++)
-				if (rates[j].rate == own_rate)
+				if (bitrates[j].bitrate == own_rate)
 					supp_rates |= BIT(j);
 		}
 
-		prev_rates = sta->supp_rates;
-		sta->supp_rates &= supp_rates;
-		if (sta->supp_rates == 0) {
+		prev_rates = sta->supp_rates[rx_status->band];
+		sta->supp_rates[rx_status->band] &= supp_rates;
+		if (sta->supp_rates[rx_status->band] == 0) {
 			/* No matching rates - this should not really happen.
 			 * Make sure that at least one rate is marked
 			 * supported to avoid issues with TX rate ctrl. */
-			sta->supp_rates = sdata->u.sta.supp_rates_bits;
+			sta->supp_rates[rx_status->band] =
+				sdata->u.sta.supp_rates_bits[rx_status->band];
 		}
-		if (sta->supp_rates != prev_rates) {
+		if (sta->supp_rates[rx_status->band] != prev_rates) {
 			printk(KERN_DEBUG "%s: updated supp_rates set for "
-			       "%s based on beacon info (0x%x & 0x%x -> "
-			       "0x%x)\n",
-			       dev->name, print_mac(mac, sta->addr), prev_rates,
-			       supp_rates, sta->supp_rates);
+			       "%s based on beacon info (0x%llx & 0x%llx -> "
+			       "0x%llx)\n",
+			       dev->name, print_mac(mac, sta->addr),
+			       (unsigned long long) prev_rates,
+			       (unsigned long long) supp_rates,
+			       (unsigned long long) sta->supp_rates[rx_status->band]);
 		}
 		sta_info_put(sta);
 	}
@@ -2114,14 +2148,14 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 		return;
 
 	if (elems.ds_params && elems.ds_params_len == 1)
-		channel = elems.ds_params[0];
+		freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
 	else
-		channel = rx_status->channel;
+		freq = rx_status->freq;
 
-	bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel,
+	bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq,
 				   elems.ssid, elems.ssid_len);
 	if (!bss) {
-		bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel,
+		bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq,
 					   elems.ssid, elems.ssid_len);
 		if (!bss)
 			return;
@@ -2134,6 +2168,8 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 #endif
 	}
 
+	bss->band = rx_status->band;
+
 	if (bss->probe_resp && beacon) {
 		/* Do not allow beacon to override data from Probe Response. */
 		ieee80211_rx_bss_put(dev, bss);
@@ -2232,20 +2268,6 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 		bss->ht_ie_len = 0;
 	}
 
-	bss->hw_mode = rx_status->phymode;
-	bss->freq = rx_status->freq;
-	if (channel != rx_status->channel &&
-	    (bss->hw_mode == MODE_IEEE80211G ||
-	     bss->hw_mode == MODE_IEEE80211B) &&
-	    channel >= 1 && channel <= 14) {
-		static const int freq_list[] = {
-			2412, 2417, 2422, 2427, 2432, 2437, 2442,
-			2447, 2452, 2457, 2462, 2467, 2472, 2484
-		};
-		/* IEEE 802.11g/b mode can receive packets from neighboring
-		 * channels, so map the channel into frequency. */
-		bss->freq = freq_list[channel - 1];
-	}
 	bss->timestamp = timestamp;
 	bss->last_update = jiffies;
 	bss->rssi = rx_status->ssi;
@@ -2817,7 +2839,7 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
 	}
 
 	spin_lock_bh(&local->sta_bss_lock);
-	freq = local->oper_channel->freq;
+	freq = local->oper_channel->center_freq;
 	list_for_each_entry(bss, &local->sta_bss_list, list) {
 		if (!(bss->capability & WLAN_CAPABILITY_ESS))
 			continue;
@@ -2848,7 +2870,7 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
 	spin_unlock_bh(&local->sta_bss_lock);
 
 	if (selected) {
-		ieee80211_set_channel(local, -1, selected->freq);
+		ieee80211_set_freq(local, selected->freq);
 		if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
 			ieee80211_sta_set_ssid(dev, selected->ssid,
 					       selected->ssid_len);
@@ -2881,10 +2903,12 @@ static int ieee80211_sta_join_ibss(struct net_device *dev,
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	struct ieee80211_tx_control control;
-	struct ieee80211_hw_mode *mode;
 	struct rate_selection ratesel;
 	u8 *pos;
 	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_supported_band *sband;
+
+	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 
 	/* Remove possible STA entries from other IBSS networks. */
 	sta_info_flush(local, NULL);
@@ -2904,12 +2928,11 @@ static int ieee80211_sta_join_ibss(struct net_device *dev,
 	sdata->drop_unencrypted = bss->capability &
 		WLAN_CAPABILITY_PRIVACY ? 1 : 0;
 
-	res = ieee80211_set_channel(local, -1, bss->freq);
+	res = ieee80211_set_freq(local, bss->freq);
 
-	if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
-		printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
-		       "(%d MHz)\n", dev->name, local->hw.conf.channel,
-		       local->hw.conf.freq);
+	if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
+		printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+		       "%d MHz\n", dev->name, local->oper_channel->center_freq);
 		return -1;
 	}
 
@@ -2946,10 +2969,12 @@ static int ieee80211_sta_join_ibss(struct net_device *dev,
 		*pos++ = rates;
 		memcpy(pos, bss->supp_rates, rates);
 
-		pos = skb_put(skb, 2 + 1);
-		*pos++ = WLAN_EID_DS_PARAMS;
-		*pos++ = 1;
-		*pos++ = bss->channel;
+		if (bss->band == IEEE80211_BAND_2GHZ) {
+			pos = skb_put(skb, 2 + 1);
+			*pos++ = WLAN_EID_DS_PARAMS;
+			*pos++ = 1;
+			*pos++ = ieee80211_frequency_to_channel(bss->freq);
+		}
 
 		pos = skb_put(skb, 2 + 2);
 		*pos++ = WLAN_EID_IBSS_PARAMS;
@@ -2967,19 +2992,18 @@ static int ieee80211_sta_join_ibss(struct net_device *dev,
 		}
 
 		memset(&control, 0, sizeof(control));
-		rate_control_get_rate(dev, local->oper_hw_mode, skb, &ratesel);
+		rate_control_get_rate(dev, sband, skb, &ratesel);
 		if (!ratesel.rate) {
 			printk(KERN_DEBUG "%s: Failed to determine TX rate "
 			       "for IBSS beacon\n", dev->name);
 			break;
 		}
 		control.vif = &sdata->vif;
-		control.tx_rate =
-			(sdata->bss_conf.use_short_preamble &&
-			(ratesel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
-			ratesel.rate->val2 : ratesel.rate->val;
+		control.tx_rate = ratesel.rate;
+		if (sdata->bss_conf.use_short_preamble &&
+		    ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+			control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
 		control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
-		control.power_level = local->hw.conf.power_level;
 		control.flags |= IEEE80211_TXCTL_NO_ACK;
 		control.retry_limit = 1;
 
@@ -3004,14 +3028,14 @@ static int ieee80211_sta_join_ibss(struct net_device *dev,
 		}
 
 		rates = 0;
-		mode = local->oper_hw_mode;
+		sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 		for (i = 0; i < bss->supp_rates_len; i++) {
 			int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
-			for (j = 0; j < mode->num_rates; j++)
-				if (mode->rates[j].rate == bitrate)
+			for (j = 0; j < sband->n_bitrates; j++)
+				if (sband->bitrates[j].bitrate == bitrate)
 					rates |= BIT(j);
 		}
-		ifsta->supp_rates_bits = rates;
+		ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
 	} while (0);
 
 	if (skb) {
@@ -3035,7 +3059,7 @@ static int ieee80211_sta_create_ibss(struct net_device *dev,
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-	struct ieee80211_hw_mode *mode;
+	struct ieee80211_supported_band *sband;
 	u8 bssid[ETH_ALEN], *pos;
 	int i;
 	DECLARE_MAC_BUF(mac);
@@ -3057,28 +3081,28 @@ static int ieee80211_sta_create_ibss(struct net_device *dev,
 	printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
 	       dev->name, print_mac(mac, bssid));
 
-	bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel,
+	bss = ieee80211_rx_bss_add(dev, bssid,
+				   local->hw.conf.channel->center_freq,
 				   sdata->u.sta.ssid, sdata->u.sta.ssid_len);
 	if (!bss)
 		return -ENOMEM;
 
-	mode = local->oper_hw_mode;
+	bss->band = local->hw.conf.channel->band;
+	sband = local->hw.wiphy->bands[bss->band];
 
 	if (local->hw.conf.beacon_int == 0)
 		local->hw.conf.beacon_int = 100;
 	bss->beacon_int = local->hw.conf.beacon_int;
-	bss->hw_mode = local->hw.conf.phymode;
-	bss->freq = local->hw.conf.freq;
 	bss->last_update = jiffies;
 	bss->capability = WLAN_CAPABILITY_IBSS;
 	if (sdata->default_key) {
 		bss->capability |= WLAN_CAPABILITY_PRIVACY;
 	} else
 		sdata->drop_unencrypted = 0;
-	bss->supp_rates_len = mode->num_rates;
+	bss->supp_rates_len = sband->n_bitrates;
 	pos = bss->supp_rates;
-	for (i = 0; i < mode->num_rates; i++) {
-		int rate = mode->rates[i].rate;
+	for (i = 0; i < sband->n_bitrates; i++) {
+		int rate = sband->bitrates[i].bitrate;
 		*pos++ = (u8) (rate / 5);
 	}
 
@@ -3127,7 +3151,8 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
 	       "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
 	if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
-	    (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel,
+	    (bss = ieee80211_rx_bss_get(dev, bssid,
+					local->hw.conf.channel->center_freq,
 					ifsta->ssid, ifsta->ssid_len))) {
 		printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
 		       " based on configured SSID\n",
@@ -3155,13 +3180,13 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
 		if (time_after(jiffies, ifsta->ibss_join_req +
 			       IEEE80211_IBSS_JOIN_TIMEOUT)) {
 			if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
-			    local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
+			    (!(local->oper_channel->flags &
+					IEEE80211_CHAN_NO_IBSS)))
 				return ieee80211_sta_create_ibss(dev, ifsta);
 			if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
-				printk(KERN_DEBUG "%s: IBSS not allowed on the"
-				       " configured channel %d (%d MHz)\n",
-				       dev->name, local->hw.conf.channel,
-				       local->hw.conf.freq);
+				printk(KERN_DEBUG "%s: IBSS not allowed on"
+				       " %d MHz\n", dev->name,
+				       local->hw.conf.channel->center_freq);
 			}
 
 			/* No IBSS found - decrease scan interval and continue
@@ -3180,7 +3205,7 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
 
 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
 {
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_if_sta *ifsta;
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 
@@ -3194,18 +3219,23 @@ int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
 		int i;
 
 		memset(&qparam, 0, sizeof(qparam));
-		/* TODO: are these ok defaults for all hw_modes? */
+
 		qparam.aifs = 2;
-		qparam.cw_min =
-			local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
+
+		if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+		    !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+			qparam.cw_min = 31;
+		else
+			qparam.cw_min = 15;
+
 		qparam.cw_max = 1023;
 		qparam.burst_time = 0;
+
 		for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
-		{
 			local->ops->conf_tx(local_to_hw(local),
 					   i + IEEE80211_TX_QUEUE_DATA0,
 					   &qparam);
-		}
+
 		/* IBSS uses different parameters for Beacon sending */
 		qparam.cw_min++;
 		qparam.cw_min *= 2;
@@ -3214,7 +3244,6 @@ int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
 				   IEEE80211_TX_QUEUE_BEACON, &qparam);
 	}
 
-	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	ifsta = &sdata->u.sta;
 
 	if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
@@ -3373,7 +3402,7 @@ void ieee80211_sta_scan_work(struct work_struct *work)
 		container_of(work, struct ieee80211_local, scan_work.work);
 	struct net_device *dev = local->scan_dev;
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-	struct ieee80211_hw_mode *mode;
+	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *chan;
 	int skip;
 	unsigned long next_delay = 0;
@@ -3383,44 +3412,47 @@ void ieee80211_sta_scan_work(struct work_struct *work)
 
 	switch (local->scan_state) {
 	case SCAN_SET_CHANNEL:
-		mode = local->scan_hw_mode;
-		if (local->scan_hw_mode->list.next == &local->modes_list &&
-		    local->scan_channel_idx >= mode->num_channels) {
+		/* get current scan band */
+		if (local->scan_band < IEEE80211_NUM_BANDS)
+			sband = local->hw.wiphy->bands[local->scan_band];
+		else
+			sband = NULL;
+
+		/* if we started at an unsupported one, advance */
+		while (!sband && local->scan_band < IEEE80211_NUM_BANDS) {
+			local->scan_band++;
+			sband = local->hw.wiphy->bands[local->scan_band];
+			local->scan_channel_idx = 0;
+		}
+
+		if (!sband ||
+		    (local->scan_channel_idx >= sband->n_channels &&
+		     local->scan_band >= IEEE80211_NUM_BANDS)) {
 			ieee80211_scan_completed(local_to_hw(local));
 			return;
 		}
-		skip = !(local->enabled_modes & (1 << mode->mode));
-		chan = &mode->channels[local->scan_channel_idx];
-		if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
+		skip = 0;
+		chan = &sband->channels[local->scan_channel_idx];
+
+		if (chan->flags & IEEE80211_CHAN_DISABLED ||
 		    (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
-		     !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
-		    (local->hw_modes & local->enabled_modes &
-		     (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
+		     chan->flags & IEEE80211_CHAN_NO_IBSS))
 			skip = 1;
 
 		if (!skip) {
-#if 0
-			printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
-			       dev->name, chan->chan, chan->freq);
-#endif
-
 			local->scan_channel = chan;
 			if (ieee80211_hw_config(local)) {
-				printk(KERN_DEBUG "%s: failed to set channel "
-				       "%d (%d MHz) for scan\n", dev->name,
-				       chan->chan, chan->freq);
+				printk(KERN_DEBUG "%s: failed to set freq to "
+				       "%d MHz for scan\n", dev->name,
+				       chan->center_freq);
 				skip = 1;
 			}
 		}
 
 		local->scan_channel_idx++;
-		if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
-			if (local->scan_hw_mode->list.next != &local->modes_list) {
-				local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
-								 struct ieee80211_hw_mode,
-								 list);
-				local->scan_channel_idx = 0;
-			}
+		if (local->scan_channel_idx >= sband->n_channels) {
+			local->scan_band++;
+			local->scan_channel_idx = 0;
 		}
 
 		if (skip)
@@ -3431,13 +3463,14 @@ void ieee80211_sta_scan_work(struct work_struct *work)
 		local->scan_state = SCAN_SEND_PROBE;
 		break;
 	case SCAN_SEND_PROBE:
-		if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
-			ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
-						 local->scan_ssid_len);
-			next_delay = IEEE80211_CHANNEL_TIME;
-		} else
-			next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+		next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
 		local->scan_state = SCAN_SET_CHANNEL;
+
+		if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+			break;
+		ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+					 local->scan_ssid_len);
+		next_delay = IEEE80211_CHANNEL_TIME;
 		break;
 	}
 
@@ -3512,10 +3545,8 @@ static int ieee80211_sta_start_scan(struct net_device *dev,
 	} else
 		local->scan_ssid_len = 0;
 	local->scan_state = SCAN_SET_CHANNEL;
-	local->scan_hw_mode = list_entry(local->modes_list.next,
-					 struct ieee80211_hw_mode,
-					 list);
 	local->scan_channel_idx = 0;
+	local->scan_band = IEEE80211_BAND_2GHZ;
 	local->scan_dev = dev;
 
 	netif_tx_lock_bh(local->mdev);
@@ -3570,9 +3601,6 @@ ieee80211_sta_scan_result(struct net_device *dev,
 		       bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
 		return current_ev;
 
-	if (!(local->enabled_modes & (1 << bss->hw_mode)))
-		return current_ev;
-
 	memset(&iwe, 0, sizeof(iwe));
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
@@ -3600,12 +3628,15 @@ ieee80211_sta_scan_result(struct net_device *dev,
 
 	memset(&iwe, 0, sizeof(iwe));
 	iwe.cmd = SIOCGIWFREQ;
-	iwe.u.freq.m = bss->channel;
-	iwe.u.freq.e = 0;
+	iwe.u.freq.m = bss->freq;
+	iwe.u.freq.e = 6;
 	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
 					  IW_EV_FREQ_LEN);
-	iwe.u.freq.m = bss->freq * 100000;
-	iwe.u.freq.e = 1;
+
+	memset(&iwe, 0, sizeof(iwe));
+	iwe.cmd = SIOCGIWFREQ;
+	iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
+	iwe.u.freq.e = 0;
 	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
 					  IW_EV_FREQ_LEN);
 
@@ -3748,7 +3779,8 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 	if (!sta)
 		return NULL;
 
-	sta->supp_rates = sdata->u.sta.supp_rates_bits;
+	sta->supp_rates[local->hw.conf.channel->band] =
+		sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
 
 	rate_control_rate_init(sta, local);