Add a DFS debugging mode which is useful when doing automated DFS

compliance testing.

In order to allow for radar pattern matching to occur, the DFS CAC/NOL
handling needs to be made configurable.  This commit introduces a new
sysctl, "net.wlan.dfs_debug", which controls which DFS debug mode
net80211 is in.

* 0 = default, CSA/NOL handling as per normal.
* 1 = announce a CSA, but don't add the channel to the non-occupy list
  (NOL.)
* 2 = disable both CSA and NOL - only print that a radar event occured.

This code is not compiled/enabled by default as it breaks regulatory
handling.  A user must enable IEEE80211_DFS_DEBUG in their kernel
configuration file for this option to become available.

Obtained from:	Atheros

1 files changed, 6 insertions, 0 deletions

diff --git a/sys/net80211/ieee80211_dfs.h b/sys/net80211/ieee80211_dfs.h
index 90760777a785..a5688e3bc491 100644
--- a/sys/net80211/ieee80211_dfs.h
+++ b/sys/net80211/ieee80211_dfs.h
@@ -31,6 +31,12 @@
  * 802.11h/DFS definitions.
  */
 
+typedef enum {
+	DFS_DBG_NONE		= 0,
+	DFS_DBG_NONOL		= 1,
+	DFS_DBG_NOCSANOL	= 2
+} dfs_debug_t;
+
 struct ieee80211_dfs_state {
 	int		nol_event[IEEE80211_CHAN_MAX];
 	struct callout	nol_timer;		/* NOL list processing */