{mac|nl}80211: Add station connected time

Add station connected time in debugfs. This will be helpful to get a
measure of stability of the connection and for debugging stress issues

Cc: Senthilkumar Balasubramanian <Senthilkumar.Balasubramanian@Atheros.com>
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index c04a1396cf8d..c008232731eb 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -92,6 +92,31 @@ static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
 }
 STA_OPS(inactive_ms);
 
+
+static ssize_t sta_connected_time_read(struct file *file, char __user *userbuf,
+                                        size_t count, loff_t *ppos)
+{
+        struct sta_info *sta = file->private_data;
+        struct timespec uptime;
+        struct tm result;
+        long connected_time_secs;
+        char buf[100];
+        int res;
+        do_posix_clock_monotonic_gettime(&uptime);
+        connected_time_secs = uptime.tv_sec - sta->last_connected;
+        time_to_tm(connected_time_secs, 0, &result);
+        result.tm_year -= 70;
+        result.tm_mday -= 1;
+        res = scnprintf(buf, sizeof(buf),
+                "years  - %d\nmonths - %d\ndays   - %d\nclock  - %d:%d:%d\n\n",
+                        result.tm_year, result.tm_mon, result.tm_mday,
+                        result.tm_hour, result.tm_min, result.tm_sec);
+        return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(connected_time);
+
+
+
 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
                                       size_t count, loff_t *ppos)
 {
@@ -324,6 +349,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
         DEBUGFS_ADD(flags);
         DEBUGFS_ADD(num_ps_buf_frames);
         DEBUGFS_ADD(inactive_ms);
+        DEBUGFS_ADD(connected_time);
         DEBUGFS_ADD(last_seq_ctrl);
         DEBUGFS_ADD(agg_status);
         DEBUGFS_ADD(dev);