add two patches for ath9k 802.11n AP mode

SVN-Revision: 13497

package/mac80211/patches/330-nl80211_ht40.patch

@@ -0,0 +1,303 @@
+This patch adds new NL80211_CMD_SET_WIPHY attributes
+NL80211_ATTR_WIPHY_FREQ and NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET to allow
+userspace to set the operating channel (e.g., hostapd for AP mode).
+
+Signed-off-by: Jouni Malinen <[email protected]>
+Acked-by: Johannes Berg <[email protected]>
+
+
+Index: wireless-testing/include/linux/nl80211.h
+===================================================================
+--- wireless-testing.orig/include/linux/nl80211.h	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/include/linux/nl80211.h	2008-11-26 15:16:59.000000000 +0200
+@@ -26,8 +26,9 @@
+  * @NL80211_CMD_GET_WIPHY: request information about a wiphy or dump request
+  *	to get a list of all present wiphys.
+  * @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or
+- *	%NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME
+- *	and/or %NL80211_ATTR_WIPHY_TXQ_PARAMS.
++ *	%NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME,
++ *	%NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ, and/or
++ *	%NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET.
+  * @NL80211_CMD_NEW_WIPHY: Newly created wiphy, response to get request
+  *	or rename notification. Has attributes %NL80211_ATTR_WIPHY and
+  *	%NL80211_ATTR_WIPHY_NAME.
+@@ -180,6 +181,14 @@
+  *	/sys/class/ieee80211/<phyname>/index
+  * @NL80211_ATTR_WIPHY_NAME: wiphy name (used for renaming)
+  * @NL80211_ATTR_WIPHY_TXQ_PARAMS: a nested array of TX queue parameters
++ * @NL80211_ATTR_WIPHY_FREQ: frequency of the selected channel in MHz
++ * @NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET: included with NL80211_ATTR_WIPHY_FREQ
++ *	if HT20 or HT40 are allowed (i.e., 802.11n disabled if not included):
++ *	NL80211_SEC_CHAN_NO_HT = HT not allowed (i.e., same as not including
++ *		this attribute)
++ *	NL80211_SEC_CHAN_DISABLED = HT20 only
++ *	NL80211_SEC_CHAN_BELOW = secondary channel is below the primary channel
++ *	NL80211_SEC_CHAN_ABOVE = secondary channel is above the primary channel
+  *
+  * @NL80211_ATTR_IFINDEX: network interface index of the device to operate on
+  * @NL80211_ATTR_IFNAME: network interface name
+@@ -315,6 +324,8 @@
+ 	NL80211_ATTR_BSS_BASIC_RATES,
+ 
+ 	NL80211_ATTR_WIPHY_TXQ_PARAMS,
++	NL80211_ATTR_WIPHY_FREQ,
++	NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET,
+ 
+ 	/* add attributes here, update the policy in nl80211.c */
+ 
+@@ -329,6 +340,8 @@
+ #define NL80211_ATTR_HT_CAPABILITY NL80211_ATTR_HT_CAPABILITY
+ #define NL80211_ATTR_BSS_BASIC_RATES NL80211_ATTR_BSS_BASIC_RATES
+ #define NL80211_ATTR_WIPHY_TXQ_PARAMS NL80211_ATTR_WIPHY_TXQ_PARAMS
++#define NL80211_ATTR_WIPHY_FREQ NL80211_ATTR_WIPHY_FREQ
++#define NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET
+ 
+ #define NL80211_MAX_SUPP_RATES			32
+ #define NL80211_MAX_SUPP_REG_RULES		32
+@@ -742,4 +755,10 @@
+ 	NL80211_TXQ_Q_BK
+ };
+ 
++enum nl80211_sec_chan_offset {
++	NL80211_SEC_CHAN_NO_HT /* No HT */,
++	NL80211_SEC_CHAN_DISABLED /* HT20 only */,
++	NL80211_SEC_CHAN_BELOW /* HT40- */,
++	NL80211_SEC_CHAN_ABOVE /* HT40+ */
++};
+ #endif /* __LINUX_NL80211_H */
+Index: wireless-testing/include/net/cfg80211.h
+===================================================================
+--- wireless-testing.orig/include/net/cfg80211.h	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/include/net/cfg80211.h	2008-11-26 15:29:50.000000000 +0200
+@@ -392,6 +392,9 @@
+ /* from net/wireless.h */
+ struct wiphy;
+ 
++/* from net/ieee80211.h */
++struct ieee80211_channel;
++
+ /**
+  * struct cfg80211_ops - backend description for wireless configuration
+  *
+@@ -450,6 +453,8 @@
+  * @change_bss: Modify parameters for a given BSS.
+  *
+  * @set_txq_params: Set TX queue parameters
++ *
++ * @set_channel: Set channel
+  */
+ struct cfg80211_ops {
+ 	int	(*add_virtual_intf)(struct wiphy *wiphy, char *name,
+@@ -513,6 +518,10 @@
+ 
+ 	int	(*set_txq_params)(struct wiphy *wiphy,
+ 				  struct ieee80211_txq_params *params);
++
++	int	(*set_channel)(struct wiphy *wiphy,
++			       struct ieee80211_channel *chan,
++			       enum nl80211_sec_chan_offset);
+ };
+ 
+ #endif /* __NET_CFG80211_H */
+Index: wireless-testing/net/mac80211/cfg.c
+===================================================================
+--- wireless-testing.orig/net/mac80211/cfg.c	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/net/mac80211/cfg.c	2008-11-26 15:19:34.000000000 +0200
+@@ -1095,6 +1095,18 @@
+ 	return 0;
+ }
+ 
++static int ieee80211_set_channel(struct wiphy *wiphy,
++				 struct ieee80211_channel *chan,
++				 enum nl80211_sec_chan_offset sec_chan_offset)
++{
++	struct ieee80211_local *local = wiphy_priv(wiphy);
++
++	local->oper_channel = chan;
++	local->oper_sec_chan_offset = sec_chan_offset;
++
++	return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
++}
++
+ struct cfg80211_ops mac80211_config_ops = {
+ 	.add_virtual_intf = ieee80211_add_iface,
+ 	.del_virtual_intf = ieee80211_del_iface,
+@@ -1122,4 +1134,5 @@
+ #endif
+ 	.change_bss = ieee80211_change_bss,
+ 	.set_txq_params = ieee80211_set_txq_params,
++	.set_channel = ieee80211_set_channel,
+ };
+Index: wireless-testing/net/wireless/nl80211.c
+===================================================================
+--- wireless-testing.orig/net/wireless/nl80211.c	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/net/wireless/nl80211.c	2008-11-26 15:31:31.000000000 +0200
+@@ -59,6 +59,8 @@
+ 	[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
+ 				      .len = BUS_ID_SIZE-1 },
+ 	[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
++	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
++	[NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET] = { .type = NLA_U32 },
+ 
+ 	[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
+ 	[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
+@@ -359,6 +361,61 @@
+ 		}
+ 	}
+ 
++	if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
++		enum nl80211_sec_chan_offset sec_chan_offset =
++			NL80211_SEC_CHAN_NO_HT;
++		struct ieee80211_channel *chan;
++		u32 freq, sec_freq;
++
++		if (!rdev->ops->set_channel) {
++			result = -EOPNOTSUPP;
++			goto bad_res;
++		}
++
++		if (info->attrs[NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]) {
++			sec_chan_offset = nla_get_u32(
++				info->attrs[
++					NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET]);
++			if (sec_chan_offset != NL80211_SEC_CHAN_NO_HT &&
++			    sec_chan_offset != NL80211_SEC_CHAN_DISABLED &&
++			    sec_chan_offset != NL80211_SEC_CHAN_BELOW &&
++			    sec_chan_offset != NL80211_SEC_CHAN_ABOVE) {
++				result = -EINVAL;
++				goto bad_res;
++			}
++		}
++
++		freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
++		chan = ieee80211_get_channel(&rdev->wiphy, freq);
++		if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
++			/* Primary channel not allowed */
++			result = -EINVAL;
++			goto bad_res;
++		}
++		if (sec_chan_offset == NL80211_SEC_CHAN_BELOW)
++			sec_freq = freq - 20;
++		else if (sec_chan_offset == NL80211_SEC_CHAN_ABOVE)
++			sec_freq = freq + 20;
++		else
++			sec_freq = 0;
++
++		if (sec_freq) {
++			struct ieee80211_channel *schan;
++			schan = ieee80211_get_channel(&rdev->wiphy, sec_freq);
++			if (!schan || schan->flags & IEEE80211_CHAN_DISABLED) {
++				/* Secondary channel not allowed */
++				result = -EINVAL;
++				goto bad_res;
++			}
++		}
++
++		result = rdev->ops->set_channel(&rdev->wiphy, chan,
++						sec_chan_offset);
++		if (result)
++			goto bad_res;
++	}
++
++
+ bad_res:
+ 	cfg80211_put_dev(rdev);
+ 	return result;
+Index: wireless-testing/include/net/mac80211.h
+===================================================================
+--- wireless-testing.orig/include/net/mac80211.h	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/include/net/mac80211.h	2008-11-26 15:15:47.000000000 +0200
+@@ -507,6 +507,9 @@
+ 
+ struct ieee80211_ht_conf {
+ 	bool enabled;
++	int sec_chan_offset; /* 0 = HT40 disabled; -1 = HT40 enabled, secondary
++			      * channel below primary; 1 = HT40 enabled,
++			      * secondary channel above primary */
+ };
+ 
+ /**
+Index: wireless-testing/net/mac80211/util.c
+===================================================================
+--- wireless-testing.orig/net/mac80211/util.c	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/net/mac80211/util.c	2008-11-26 15:20:26.000000000 +0200
+@@ -641,6 +641,7 @@
+ 		    chan->flags & IEEE80211_CHAN_NO_IBSS)
+ 			return ret;
+ 		local->oper_channel = chan;
++		local->oper_sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
+ 
+ 		if (local->sw_scanning || local->hw_scanning)
+ 			ret = 0;
+Index: wireless-testing/net/mac80211/ieee80211_i.h
+===================================================================
+--- wireless-testing.orig/net/mac80211/ieee80211_i.h	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/net/mac80211/ieee80211_i.h	2008-11-26 15:20:12.000000000 +0200
+@@ -626,6 +626,7 @@
+ 	struct delayed_work scan_work;
+ 	struct ieee80211_sub_if_data *scan_sdata;
+ 	struct ieee80211_channel *oper_channel, *scan_channel;
++	enum nl80211_sec_chan_offset oper_sec_chan_offset;
+ 	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
+ 	size_t scan_ssid_len;
+ 	struct list_head bss_list;
+Index: wireless-testing/net/mac80211/main.c
+===================================================================
+--- wireless-testing.orig/net/mac80211/main.c	2008-11-26 15:15:31.000000000 +0200
++++ wireless-testing/net/mac80211/main.c	2008-11-26 15:29:09.000000000 +0200
+@@ -195,20 +195,42 @@
+ 	struct ieee80211_channel *chan;
+ 	int ret = 0;
+ 	int power;
++	enum nl80211_sec_chan_offset sec_chan_offset;
+ 
+ 	might_sleep();
+ 
+-	if (local->sw_scanning)
++	if (local->sw_scanning) {
+ 		chan = local->scan_channel;
+-	else
++		sec_chan_offset = NL80211_SEC_CHAN_NO_HT;
++	} else {
+ 		chan = local->oper_channel;
++		sec_chan_offset = local->oper_sec_chan_offset;
++	}
+ 
+-	if (chan != local->hw.conf.channel) {
++	if (chan != local->hw.conf.channel ||
++	    sec_chan_offset != local->hw.conf.ht.sec_chan_offset) {
+ 		local->hw.conf.channel = chan;
++		switch (sec_chan_offset) {
++		case NL80211_SEC_CHAN_NO_HT:
++			local->hw.conf.ht.enabled = false;
++			local->hw.conf.ht.sec_chan_offset = 0;
++			break;
++		case NL80211_SEC_CHAN_DISABLED:
++			local->hw.conf.ht.enabled = true;
++			local->hw.conf.ht.sec_chan_offset = 0;
++			break;
++		case NL80211_SEC_CHAN_BELOW:
++			local->hw.conf.ht.enabled = true;
++			local->hw.conf.ht.sec_chan_offset = -1;
++			break;
++		case NL80211_SEC_CHAN_ABOVE:
++			local->hw.conf.ht.enabled = true;
++			local->hw.conf.ht.sec_chan_offset = 1;
++			break;
++		}
+ 		changed |= IEEE80211_CONF_CHANGE_CHANNEL;
+ 	}
+ 
+-
+ 	if (!local->hw.conf.power_level)
+ 		power = chan->max_power;
+ 	else
+
+-- 
+Jouni Malinen                                            PGP id EFC895FA
+--
+To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
+the body of a message to [email protected]
+More majordomo info at  http://vger.kernel.org/majordomo-info.html
+

package/mac80211/patches/340-ath9k_ap_rc.patch

@@ -0,0 +1,210 @@
+Hostapd now passes the HT parameters through the config()
+callback, use these to set the appropriate channel in AP mode.
+
+Signed-off-by: Sujith <[email protected]>
+---
+Note: This patch depends on [PATCHv2] nl80211: Add frequency configuration (including HT40)
+posted by Jouni.
+
+ drivers/net/wireless/ath9k/main.c |   60 ++++++++++++++++++++++++++----------
+ drivers/net/wireless/ath9k/rc.c   |   55 +++++++++++++++++++++++++++++----
+ 2 files changed, 91 insertions(+), 24 deletions(-)
+
+diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
+index 6e103d5..d1ddb07 100644
+--- a/drivers/net/wireless/ath9k/main.c
++++ b/drivers/net/wireless/ath9k/main.c
+@@ -622,35 +622,35 @@ static int ath_get_channel(struct ath_softc *sc,
+ 	return -1;
+ }
+ 
++/* ext_chan_offset: (-1, 0, 1) (below, none, above) */
++
+ static u32 ath_get_extchanmode(struct ath_softc *sc,
+ 			       struct ieee80211_channel *chan,
+-			       struct ieee80211_bss_conf *bss_conf)
++			       int ext_chan_offset,
++			       enum ath9k_ht_macmode tx_chan_width)
+ {
+ 	u32 chanmode = 0;
+-	u8 ext_chan_offset = bss_conf->ht.secondary_channel_offset;
+-	enum ath9k_ht_macmode tx_chan_width = (bss_conf->ht.width_40_ok) ?
+-		ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
+ 
+ 	switch (chan->band) {
+ 	case IEEE80211_BAND_2GHZ:
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
++		if ((ext_chan_offset == 0) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_20))
+ 			chanmode = CHANNEL_G_HT20;
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
++		if ((ext_chan_offset == 1) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ 			chanmode = CHANNEL_G_HT40PLUS;
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
++		if ((ext_chan_offset == -1) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ 			chanmode = CHANNEL_G_HT40MINUS;
+ 		break;
+ 	case IEEE80211_BAND_5GHZ:
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE) &&
++		if ((ext_chan_offset == 0) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_20))
+ 			chanmode = CHANNEL_A_HT20;
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) &&
++		if ((ext_chan_offset == 1) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ 			chanmode = CHANNEL_A_HT40PLUS;
+-		if ((ext_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) &&
++		if ((ext_chan_offset == -1) &&
+ 		    (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ 			chanmode = CHANNEL_A_HT40MINUS;
+ 		break;
+@@ -841,6 +841,18 @@ static void ath9k_ht_conf(struct ath_softc *sc,
+ 	}
+ }
+ 
++static inline int ath_sec_offset(u8 ext_offset)
++{
++	if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE)
++		return 0;
++	else if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
++		return 1;
++	else if (ext_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
++		return -1;
++
++	return 0;
++}
++
+ static void ath9k_bss_assoc_info(struct ath_softc *sc,
+ 				 struct ieee80211_vif *vif,
+ 				 struct ieee80211_bss_conf *bss_conf)
+@@ -893,13 +905,14 @@ static void ath9k_bss_assoc_info(struct ath_softc *sc,
+ 		}
+ 
+ 		if (hw->conf.ht.enabled) {
+-			sc->sc_ah->ah_channels[pos].chanmode =
+-				ath_get_extchanmode(sc, curchan, bss_conf);
++			int offset =
++				ath_sec_offset(bss_conf->ht.secondary_channel_offset);
++			sc->tx_chan_width = (bss_conf->ht.width_40_ok) ?
++				ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
+ 
+-			if (bss_conf->ht.width_40_ok)
+-				sc->tx_chan_width = ATH9K_HT_MACMODE_2040;
+-			else
+-				sc->tx_chan_width = ATH9K_HT_MACMODE_20;
++			sc->sc_ah->ah_channels[pos].chanmode =
++				ath_get_extchanmode(sc, curchan,
++						    offset, sc->tx_chan_width);
+ 		} else {
+ 			sc->sc_ah->ah_channels[pos].chanmode =
+ 				(curchan->band == IEEE80211_BAND_2GHZ) ?
+@@ -2172,9 +2185,22 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
+ 			(curchan->band == IEEE80211_BAND_2GHZ) ?
+ 			CHANNEL_G : CHANNEL_A;
+ 
+-		if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
++		if ((sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) &&
++		    (conf->ht.enabled)) {
++			sc->tx_chan_width = (!!conf->ht.sec_chan_offset) ?
++				ATH9K_HT_MACMODE_2040 : ATH9K_HT_MACMODE_20;
++
++			sc->sc_ah->ah_channels[pos].chanmode =
++				ath_get_extchanmode(sc, curchan,
++						    conf->ht.sec_chan_offset,
++						    sc->tx_chan_width);
++		}
++
++		if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) {
+ 			DPRINTF(sc, ATH_DBG_FATAL,
+ 				"%s: Unable to set channel\n", __func__);
++			return -EINVAL;
++		}
+ 	}
+ 
+ 	if (changed & IEEE80211_CONF_CHANGE_HT)
+diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
+index 93dfea8..7c08583 100644
+--- a/drivers/net/wireless/ath9k/rc.c
++++ b/drivers/net/wireless/ath9k/rc.c
+@@ -1304,6 +1304,38 @@ static void ath_rc_tx_status(struct ath_softc *sc,
+ 			 xretries, long_retry);
+ }
+ 
++static struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
++						    enum ieee80211_band band,
++						    bool is_ht, bool is_cw_40)
++{
++	int mode = 0;
++
++	switch(band) {
++	case IEEE80211_BAND_2GHZ:
++		mode = ATH9K_MODE_11G;
++		if (is_ht)
++			mode = ATH9K_MODE_11NG_HT20;
++		if (is_cw_40)
++			mode = ATH9K_MODE_11NG_HT40PLUS;
++		break;
++	case IEEE80211_BAND_5GHZ:
++		mode = ATH9K_MODE_11A;
++		if (is_ht)
++			mode = ATH9K_MODE_11NA_HT20;
++		if (is_cw_40)
++			mode = ATH9K_MODE_11NA_HT40PLUS;
++		break;
++	default:
++		DPRINTF(sc, ATH_DBG_RATE, "Invalid band\n");
++		return NULL;
++	}
++
++	BUG_ON(mode >= ATH9K_MODE_MAX);
++
++	DPRINTF(sc, ATH_DBG_RATE, "Choosing rate table for mode: %d\n", mode);
++	return sc->hw_rate_table[mode];
++}
++
+ static void ath_rc_init(struct ath_softc *sc,
+ 			struct ath_rate_priv *ath_rc_priv,
+ 			struct ieee80211_supported_band *sband,
+@@ -1314,16 +1346,25 @@ static void ath_rc_init(struct ath_softc *sc,
+ 	u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
+ 	u8 i, j, k, hi = 0, hthi = 0;
+ 
+-	rate_table = sc->hw_rate_table[sc->sc_curmode];
++	/* FIXME: Adhoc */
++	if ((sc->sc_ah->ah_opmode == ATH9K_M_STA) ||
++	    (sc->sc_ah->ah_opmode == ATH9K_M_IBSS)) {
++		bool is_cw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
++		rate_table = ath_choose_rate_table(sc, sband->band,
++						   sta->ht_cap.ht_supported,
++						   is_cw_40);
++	} else if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) {
++		/* sc_curmode would be set on init through config() */
++		rate_table = sc->hw_rate_table[sc->sc_curmode];
++	}
+ 
+-	if (sta->ht_cap.ht_supported) {
+-		if (sband->band == IEEE80211_BAND_2GHZ)
+-			rate_table = sc->hw_rate_table[ATH9K_MODE_11NG_HT20];
+-		else
+-			rate_table = sc->hw_rate_table[ATH9K_MODE_11NA_HT20];
++	if (!rate_table) {
++		DPRINTF(sc, ATH_DBG_FATAL, "Rate table not initialized\n");
++		return;
++	}
+ 
++	if (sta->ht_cap.ht_supported) {
+ 		ath_rc_priv->ht_cap = (WLAN_RC_HT_FLAG | WLAN_RC_DS_FLAG);
+-
+ 		if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
+ 			ath_rc_priv->ht_cap |= WLAN_RC_40_FLAG;
+ 	}
+-- 
+1.6.0.3
+
+--
+To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
+the body of a message to [email protected]
+More majordomo info at  http://vger.kernel.org/majordomo-info.html
+