mac80211: enable HT overrides for ibss

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>

1 files changed, 38 insertions, 15 deletions

diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index f83534f..529bf58 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -19,13 +19,14 @@
 #include "ieee80211_i.h"
 #include "rate.h"
 
-static void __check_htcap_disable(struct ieee80211_sub_if_data *sdata,
+static void __check_htcap_disable(struct ieee80211_ht_cap *ht_capa,
+				  struct ieee80211_ht_cap *ht_capa_mask,
 				  struct ieee80211_sta_ht_cap *ht_cap,
 				  u16 flag)
 {
 	__le16 le_flag = cpu_to_le16(flag);
-	if (sdata->u.mgd.ht_capa_mask.cap_info & le_flag) {
-		if (!(sdata->u.mgd.ht_capa.cap_info & le_flag))
+	if (ht_capa_mask->cap_info & le_flag) {
+		if (!(ht_capa->cap_info & le_flag))
 			ht_cap->cap &= ~flag;
 	}
 }
@@ -33,13 +34,30 @@ static void __check_htcap_disable(struct ieee80211_sub_if_data *sdata,
 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
 				     struct ieee80211_sta_ht_cap *ht_cap)
 {
-	u8 *scaps = (u8 *)(&sdata->u.mgd.ht_capa.mcs.rx_mask);
-	u8 *smask = (u8 *)(&sdata->u.mgd.ht_capa_mask.mcs.rx_mask);
+	struct ieee80211_ht_cap *ht_capa, *ht_capa_mask;
+	u8 *scaps, *smask;
 	int i;
 
 	if (!ht_cap->ht_supported)
 		return;
 
+	switch (sdata->vif.type) {
+	case NL80211_IFTYPE_STATION:
+		ht_capa = &sdata->u.mgd.ht_capa;
+		ht_capa_mask = &sdata->u.mgd.ht_capa_mask;
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		ht_capa = &sdata->u.ibss.ht_capa;
+		ht_capa_mask = &sdata->u.ibss.ht_capa_mask;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return;
+	}
+
+	scaps = (u8 *)(&ht_capa->mcs.rx_mask);
+	smask = (u8 *)(&ht_capa_mask->mcs.rx_mask);
+
 	/* NOTE:  If you add more over-rides here, update register_hw
 	 * ht_capa_mod_msk logic in main.c as well.
 	 * And, if this method can ever change ht_cap.ht_supported, fix
@@ -55,28 +73,32 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
 	}
 
 	/* Force removal of HT-40 capabilities? */
-	__check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SUP_WIDTH_20_40);
-	__check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SGI_40);
+	__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap,
+			      IEEE80211_HT_CAP_SUP_WIDTH_20_40);
+	__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap,
+			      IEEE80211_HT_CAP_SGI_40);
 
 	/* Allow user to disable SGI-20 (SGI-40 is handled above) */
-	__check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SGI_20);
+	__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap,
+			      IEEE80211_HT_CAP_SGI_20);
 
 	/* Allow user to disable the max-AMSDU bit. */
-	__check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_MAX_AMSDU);
+	__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap,
+			      IEEE80211_HT_CAP_MAX_AMSDU);
 
 	/* Allow user to decrease AMPDU factor */
-	if (sdata->u.mgd.ht_capa_mask.ampdu_params_info &
+	if (ht_capa_mask->ampdu_params_info &
 	    IEEE80211_HT_AMPDU_PARM_FACTOR) {
-		u8 n = sdata->u.mgd.ht_capa.ampdu_params_info
-			& IEEE80211_HT_AMPDU_PARM_FACTOR;
+		u8 n = ht_capa->ampdu_params_info &
+		       IEEE80211_HT_AMPDU_PARM_FACTOR;
 		if (n < ht_cap->ampdu_factor)
 			ht_cap->ampdu_factor = n;
 	}
 
 	/* Allow the user to increase AMPDU density. */
-	if (sdata->u.mgd.ht_capa_mask.ampdu_params_info &
+	if (ht_capa_mask->ampdu_params_info &
 	    IEEE80211_HT_AMPDU_PARM_DENSITY) {
-		u8 n = (sdata->u.mgd.ht_capa.ampdu_params_info &
+		u8 n = (ht_capa->ampdu_params_info &
 			IEEE80211_HT_AMPDU_PARM_DENSITY)
 			>> IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT;
 		if (n > ht_cap->ampdu_density)
@@ -112,7 +134,8 @@ bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
 	 * we advertised a restricted capability set to. Override
 	 * our own capabilities and then use those below.
 	 */
-	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
+	if ((sdata->vif.type == NL80211_IFTYPE_STATION ||
+	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
 	    !test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 		ieee80211_apply_htcap_overrides(sdata, &own_cap);