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, 16 insertions, 2 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index ea7b9c2c7e66..7f290a8562ef 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -179,8 +179,12 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
             chandef.width != NL80211_CHAN_WIDTH_5 &&
             chandef.width != NL80211_CHAN_WIDTH_10 &&
             sband->ht_cap.ht_supported) {
-                pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap,
-                                                sband->ht_cap.cap);
+                struct ieee80211_sta_ht_cap ht_cap;
+
+                memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
+                ieee80211_apply_htcap_overrides(sdata, &ht_cap);
+
+                pos = ieee80211_ie_build_ht_cap(pos, &ht_cap, ht_cap.cap);
                 /*
                  * Note: According to 802.11n-2009 9.13.3.1, HT Protection
                  * field and RIFS Mode are reserved in IBSS mode, therefore
@@ -1051,6 +1055,11 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
         memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len);
         sdata->u.ibss.ssid_len = params->ssid_len;
 
+        memcpy(&sdata->u.ibss.ht_capa, &params->ht_capa,
+               sizeof(sdata->u.ibss.ht_capa));
+        memcpy(&sdata->u.ibss.ht_capa_mask, &params->ht_capa_mask,
+               sizeof(sdata->u.ibss.ht_capa_mask));
+
         /*
          * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is
          * reserved, but an HT STA shall protect HT transmissions as though
@@ -1131,6 +1140,11 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
         presp = rcu_dereference_protected(ifibss->presp,
                                           lockdep_is_held(&sdata->wdev.mtx));
         RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
+
+        /* on the next join, re-program HT parameters */
+        memset(&ifibss->ht_capa, 0, sizeof(ifibss->ht_capa));
+        memset(&ifibss->ht_capa_mask, 0, sizeof(ifibss->ht_capa_mask));
+
         sdata->vif.bss_conf.ibss_joined = false;
         sdata->vif.bss_conf.ibss_creator = false;
         sdata->vif.bss_conf.enable_beacon = false;