mac80211: adding 802.11n configuration flows

This patch configures the 802.11n mode of operation
internally in ieee80211_conf structure and in the low-level
driver as well (through op conf_ht).
It does not include AP configuration flows.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 1d553d78b227..87830c04a1ca 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1437,6 +1437,19 @@ static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
         }
         sta->supp_rates = rates;
 
+        if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
+            local->ops->conf_ht) {
+                struct ieee80211_ht_bss_info bss_info;
+
+                ieee80211_ht_cap_ie_to_ht_info(
+                                (struct ieee80211_ht_cap *)
+                                elems.ht_cap_elem, &sta->ht_info);
+                ieee80211_ht_addt_info_ie_to_ht_bss_info(
+                                (struct ieee80211_ht_addt_info *)
+                                elems.ht_info_elem, &bss_info);
+                ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info);
+        }
+
         rate_control_rate_init(sta, local);
 
         if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
@@ -1859,6 +1872,8 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
         struct ieee80211_if_sta *ifsta;
         size_t baselen;
         struct ieee802_11_elems elems;
+        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+        struct ieee80211_conf *conf = &local->hw.conf;
 
         ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
 
@@ -1881,6 +1896,23 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
         if (elems.erp_info && elems.erp_info_len >= 1)
                 ieee80211_handle_erp_ie(dev, elems.erp_info[0]);
 
+        if (elems.ht_cap_elem && elems.ht_info_elem &&
+            elems.wmm_param && local->ops->conf_ht &&
+            conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+                struct ieee80211_ht_bss_info bss_info;
+
+                ieee80211_ht_addt_info_ie_to_ht_bss_info(
+                                (struct ieee80211_ht_addt_info *)
+                                elems.ht_info_elem, &bss_info);
+                /* check if AP changed bss inforamation */
+                if ((conf->ht_bss_conf.primary_channel !=
+                     bss_info.primary_channel) ||
+                    (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) ||
+                    (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode))
+                        ieee80211_hw_config_ht(local, 1, &conf->ht_conf,
+                                                &bss_info);
+        }
+
         if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
                 ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
                                          elems.wmm_param_len);