iwlagn: keep track of failure tx status

Tx command response sent to host by uCode after completed
the transmission attempt. The status parameter indicates
whether the transmission was successful, or else why if failed.

Here we keep the counters to help understand the different failure
cases.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index e0b31a2a1dac..265ad01a443f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -1642,6 +1642,18 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
         return count;
 }
 
+static ssize_t iwl_dbgfs_reply_tx_error_read(struct file *file,
+                                        char __user *user_buf,
+                                        size_t count, loff_t *ppos)
+{
+        struct iwl_priv *priv = file->private_data;
+
+        if (priv->cfg->ops->lib->debugfs_ops.reply_tx_error)
+                return priv->cfg->ops->lib->debugfs_ops.reply_tx_error(
+                        file, user_buf, count, ppos);
+        else
+                return -ENODATA;
+}
 DEBUGFS_READ_FILE_OPS(rx_statistics);
 DEBUGFS_READ_FILE_OPS(tx_statistics);
 DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
@@ -1668,6 +1680,7 @@ DEBUGFS_READ_FILE_OPS(ucode_bt_stats);
 DEBUGFS_WRITE_FILE_OPS(monitor_period);
 DEBUGFS_READ_FILE_OPS(bt_traffic);
 DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
+DEBUGFS_READ_FILE_OPS(reply_tx_error);
 
 /*
  * Create the debugfs files and directories
@@ -1738,6 +1751,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
                 DEBUGFS_ADD_FILE(ucode_tracing, dir_debug, S_IWUSR | S_IRUSR);
         if (priv->cfg->bt_statistics)
                 DEBUGFS_ADD_FILE(ucode_bt_stats, dir_debug, S_IRUSR);
+        DEBUGFS_ADD_FILE(reply_tx_error, dir_debug, S_IRUSR);
         DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
         DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
         DEBUGFS_ADD_FILE(monitor_period, dir_debug, S_IWUSR);