[PATCH 2/2] iw: print DFS states for channels if available

[Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>]

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
---
 info.c |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/info.c b/info.c
index 14db37f..bcf36d7 100644
--- a/info.c
+++ b/info.c
@@ -49,6 +49,20 @@ static char *cipher_name(__u32 c)
 	}
 }
 
+static char *dfs_state_name(enum nl80211_dfs_state state)
+{
+	switch (state) {
+	case NL80211_DFS_USABLE:
+		return "usable";
+	case NL80211_DFS_AVAILABLE:
+		return "available";
+	case NL80211_DFS_UNAVAILABLE:
+		return "unavailable";
+	default:
+		return "unknown";
+	}
+}
+
 static int print_phy_handler(struct nl_msg *msg, void *arg)
 {
 	struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
@@ -147,6 +161,17 @@ static int print_phy_handler(struct nl_msg *msg, void *arg)
  next:
 			if (open)
 				printf(")");
+			if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
+				enum nl80211_dfs_state state = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
+				unsigned long time;
+
+				printf(" DFS state: %s", dfs_state_name(state));
+				if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_TIME]) {
+					time = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_TIME]);
+					printf(" (for %lu sec)", time/1000);
+				}
+			}
+
 			printf("\n");
 		}
 
-- 
1.7.10.4