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Commit c6abdc0d authored by Wey-Yi Guy's avatar Wey-Yi Guy
Browse files

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: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
parent 2a3aeb44

drivers/net/wireless/iwlwifi/iwl-debugfs.c

+40 −0
Original line number Diff line number Diff line
@@ -1604,6 +1604,44 @@ static ssize_t iwl_dbgfs_bt_traffic_read(struct file *file, 
	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_WRITE_FILE_OPS(txfifo_flush); 
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 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name) 
	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);