iwlwifi: allow configure protection mode
Even driver use rts/cts protection mode for aggregation packets by default.
Allow the protection mode to be configure through debugfs
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index 86017ed..e0b31a2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -1604,6 +1604,44 @@
return ret;
}
+static ssize_t iwl_dbgfs_protection_mode_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+
+ int pos = 0;
+ char buf[40];
+ const size_t bufsz = sizeof(buf);
+
+ pos += scnprintf(buf + pos, bufsz - pos, "use %s for aggregation\n",
+ (priv->cfg->use_rts_for_aggregation) ? "rts/cts" :
+ "cts-to-self");
+ return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+}
+
+static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos) {
+
+ struct iwl_priv *priv = file->private_data;
+ char buf[8];
+ int buf_size;
+ int rts;
+
+ memset(buf, 0, sizeof(buf));
+ buf_size = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ if (sscanf(buf, "%d", &rts) != 1)
+ return -EINVAL;
+ if (rts)
+ priv->cfg->use_rts_for_aggregation = true;
+ else
+ priv->cfg->use_rts_for_aggregation = false;
+ return count;
+}
+
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
@@ -1629,6 +1667,7 @@
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);
/*
* Create the debugfs files and directories
@@ -1689,6 +1728,7 @@
DEBUGFS_ADD_FILE(ucode_general_stats, dir_debug, S_IRUSR);
if (priv->cfg->ops->lib->dev_txfifo_flush)
DEBUGFS_ADD_FILE(txfifo_flush, dir_debug, S_IWUSR);
+ DEBUGFS_ADD_FILE(protection_mode, dir_debug, S_IWUSR | S_IRUSR);
if (priv->cfg->sensitivity_calib_by_driver)
DEBUGFS_ADD_FILE(sensitivity, dir_debug, S_IRUSR);