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 <>
parent 2a3aeb44
......@@ -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" :
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;
priv->cfg->use_rts_for_aggregation = false;
return count;
......@@ -1629,6 +1667,7 @@ DEBUGFS_WRITE_FILE_OPS(txfifo_flush);
* 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);
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