[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/net/mac80211/chan.c b/ap/os/linux/linux-3.4.x/net/mac80211/chan.c
new file mode 100644
index 0000000..e00ce8c
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/mac80211/chan.c
@@ -0,0 +1,163 @@
+/*
+ * mac80211 - channel management
+ */
+
+#include <linux/nl80211.h>
+#include <net/cfg80211.h>
+#include "ieee80211_i.h"
+
+static enum ieee80211_chan_mode
+__ieee80211_get_channel_mode(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *ignore)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ lockdep_assert_held(&local->iflist_mtx);
+
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata == ignore)
+ continue;
+
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_MONITOR:
+ continue;
+ case NL80211_IFTYPE_STATION:
+ if (!sdata->u.mgd.associated)
+ continue;
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ if (!sdata->u.ibss.ssid_len)
+ continue;
+ if (!sdata->u.ibss.fixed_channel)
+ return CHAN_MODE_HOPPING;
+ break;
+ case NL80211_IFTYPE_AP_VLAN:
+ /* will also have _AP interface */
+ continue;
+ case NL80211_IFTYPE_AP:
+ if (!sdata->u.ap.beacon)
+ continue;
+ break;
+ default:
+ break;
+ }
+
+ return CHAN_MODE_FIXED;
+ }
+
+ return CHAN_MODE_UNDEFINED;
+}
+
+enum ieee80211_chan_mode
+ieee80211_get_channel_mode(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *ignore)
+{
+ enum ieee80211_chan_mode mode;
+
+ mutex_lock(&local->iflist_mtx);
+ mode = __ieee80211_get_channel_mode(local, ignore);
+ mutex_unlock(&local->iflist_mtx);
+
+ return mode;
+}
+
+bool ieee80211_set_channel_type(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ enum nl80211_channel_type chantype)
+{
+ struct ieee80211_sub_if_data *tmp;
+ enum nl80211_channel_type superchan = NL80211_CHAN_NO_HT;
+ bool result;
+
+ mutex_lock(&local->iflist_mtx);
+
+ list_for_each_entry(tmp, &local->interfaces, list) {
+ if (tmp == sdata)
+ continue;
+
+ if (!ieee80211_sdata_running(tmp))
+ continue;
+
+ switch (tmp->vif.bss_conf.channel_type) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ if (superchan > tmp->vif.bss_conf.channel_type)
+ break;
+
+ superchan = tmp->vif.bss_conf.channel_type;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ WARN_ON(superchan == NL80211_CHAN_HT40MINUS);
+ superchan = NL80211_CHAN_HT40PLUS;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ WARN_ON(superchan == NL80211_CHAN_HT40PLUS);
+ superchan = NL80211_CHAN_HT40MINUS;
+ break;
+ }
+ }
+
+ switch (superchan) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ /*
+ * allow any change that doesn't go to no-HT
+ * (if it already is no-HT no change is needed)
+ */
+ if (chantype == NL80211_CHAN_NO_HT)
+ break;
+ superchan = chantype;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ case NL80211_CHAN_HT40MINUS:
+ /* allow smaller bandwidth and same */
+ if (chantype == NL80211_CHAN_NO_HT)
+ break;
+ if (chantype == NL80211_CHAN_HT20)
+ break;
+ if (superchan == chantype)
+ break;
+ result = false;
+ goto out;
+ }
+
+ local->_oper_channel_type = superchan;
+
+ if (sdata)
+ sdata->vif.bss_conf.channel_type = chantype;
+
+ result = true;
+ out:
+ mutex_unlock(&local->iflist_mtx);
+
+ return result;
+}
+
+/*
+ * ieee80211_get_tx_channel_type returns the channel type we should
+ * use for packet transmission, given the channel capability and
+ * whatever regulatory flags we have been given.
+ */
+enum nl80211_channel_type ieee80211_get_tx_channel_type(
+ struct ieee80211_local *local,
+ enum nl80211_channel_type channel_type)
+{
+ switch (channel_type) {
+ case NL80211_CHAN_HT40PLUS:
+ if (local->hw.conf.channel->flags &
+ IEEE80211_CHAN_NO_HT40PLUS)
+ return NL80211_CHAN_HT20;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ if (local->hw.conf.channel->flags &
+ IEEE80211_CHAN_NO_HT40MINUS)
+ return NL80211_CHAN_HT20;
+ break;
+ default:
+ break;
+ }
+ return channel_type;
+}