radar_counter.patch

gehe zur Dokumentation dieser Datei

Author: Kai-Uwe

Index: on_firmware/openwrt/package/kernel/mac80211/patches/ath/496_radar_counter.patch
===================================================================
--- /dev/null
+++ on_firmware/openwrt/package/kernel/mac80211/patches/ath/496_radar_counter.patch
@@ -0,0 +1,45 @@
+--- a/drivers/net/wireless/ath/dfs_pattern_detector.c
++++ b/drivers/net/wireless/ath/dfs_pattern_detector.c
+@@ -131,6 +131,8 @@
+  &jp_radar_types,
+ };
+ 
++static int radar_found_counter = 0;
++
+ /**
+  * get_dfs_domain_radar_types() - get radar types for a given DFS domain
+  * @param domain DFS domain
+@@ -290,6 +292,15 @@
+      dpd_reset(dpd);
+  dpd->last_pulse_ts = event->ts;
+ 
++ /* Apply radar threshold according to ETSI EN 301893 V2.1.1, D2.
++  * Only signals stronger than -64 dBm (at 0 dBi) have to be detected. 
++  * To be safe we use a very conservative threshold of rssi 20.
++  */
++
++ if (20 > event->rssi) 
++     return false;
++
++
+  /* do type individual pattern matching */
+  for (i = 0; i < dpd->num_radar_types; i++) {
+      struct pri_detector *pd = cd->detectors[i];
+@@ -297,8 +308,15 @@
+      if (ps != NULL) {
+          if (rs != NULL)
+              memcpy(rs, pd->rs, sizeof(*rs));
+-         ath_dbg(dpd->common, DFS,
+-             "DFS: radar found on freq=%d: id=%d, pri=%d, "
++
++         if (radar_found_counter < 2) {
++             radar_found_counter++;
++             return false;
++         }
++         radar_found_counter = 0;
++
++
++         printk( "DFS: radar found on freq=%d: id=%d, pri=%d, "
+              "count=%d, count_false=%d\n",
+              event->freq, pd->rs->type_id,
+              ps->pri, ps->count, ps->count_falses);