1 files changed, 99 insertions, 1 deletions

diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c
index f72bad636d8e..8d4ec2968f8f 100644
--- a/net/mac80211/spectmgmt.c
+++ b/net/mac80211/spectmgmt.c
@@ -65,7 +65,7 @@ static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_da
                         IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
         msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
 
-        ieee80211_tx_skb(sdata, skb, 0);
+        ieee80211_tx_skb(sdata, skb, 1);
 }
 
 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
@@ -84,3 +84,101 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
                         mgmt->sa, mgmt->bssid,
                         mgmt->u.action.u.measurement.dialog_token);
 }
+
+void ieee80211_chswitch_work(struct work_struct *work)
+{
+        struct ieee80211_sub_if_data *sdata =
+                container_of(work, struct ieee80211_sub_if_data, u.sta.chswitch_work);
+        struct ieee80211_bss *bss;
+        struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+        if (!netif_running(sdata->dev))
+                return;
+
+        bss = ieee80211_rx_bss_get(sdata->local, ifsta->bssid,
+                                   sdata->local->hw.conf.channel->center_freq,
+                                   ifsta->ssid, ifsta->ssid_len);
+        if (!bss)
+                goto exit;
+
+        sdata->local->oper_channel = sdata->local->csa_channel;
+        if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL))
+                bss->freq = sdata->local->oper_channel->center_freq;
+
+        ieee80211_rx_bss_put(sdata->local, bss);
+exit:
+        ifsta->flags &= ~IEEE80211_STA_CSA_RECEIVED;
+        ieee80211_wake_queues_by_reason(&sdata->local->hw,
+                                        IEEE80211_QUEUE_STOP_REASON_CSA);
+}
+
+void ieee80211_chswitch_timer(unsigned long data)
+{
+        struct ieee80211_sub_if_data *sdata =
+                (struct ieee80211_sub_if_data *) data;
+        struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+        queue_work(sdata->local->hw.workqueue, &ifsta->chswitch_work);
+}
+
+void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
+                                  struct ieee80211_channel_sw_ie *sw_elem,
+                                  struct ieee80211_bss *bss)
+{
+        struct ieee80211_channel *new_ch;
+        struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+        int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num);
+
+        /* FIXME: Handle ADHOC later */
+        if (sdata->vif.type != NL80211_IFTYPE_STATION)
+                return;
+
+        if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATED)
+                return;
+
+        if (sdata->local->sw_scanning || sdata->local->hw_scanning)
+                return;
+
+        /* Disregard subsequent beacons if we are already running a timer
+           processing a CSA */
+
+        if (ifsta->flags & IEEE80211_STA_CSA_RECEIVED)
+                return;
+
+        new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
+        if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED)
+                return;
+
+        sdata->local->csa_channel = new_ch;
+
+        if (sw_elem->count <= 1) {
+                queue_work(sdata->local->hw.workqueue, &ifsta->chswitch_work);
+        } else {
+                ieee80211_stop_queues_by_reason(&sdata->local->hw,
+                                                IEEE80211_QUEUE_STOP_REASON_CSA);
+                ifsta->flags |= IEEE80211_STA_CSA_RECEIVED;
+                mod_timer(&ifsta->chswitch_timer,
+                          jiffies + msecs_to_jiffies(sw_elem->count * bss->beacon_int));
+        }
+}
+
+void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
+                                 u16 capab_info, u8 *pwr_constr_elem,
+                                 u8 pwr_constr_elem_len)
+{
+        struct ieee80211_conf *conf = &sdata->local->hw.conf;
+
+        if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT))
+                return;
+
+        /* Power constraint IE length should be 1 octet */
+        if (pwr_constr_elem_len != 1)
+                return;
+
+        if ((*pwr_constr_elem <= conf->channel->max_power) &&
+            (*pwr_constr_elem != sdata->local->power_constr_level)) {
+                sdata->local->power_constr_level = *pwr_constr_elem;
+                ieee80211_hw_config(sdata->local, 0);
+        }
+}
+