From c6abdc0dc3440b9b6ae00a59c3560ab2160c7c7d Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Wed, 1 Sep 2010 17:10:51 -0700 Subject: [PATCH] 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 --- drivers/net/wireless/iwlwifi/iwl-debugfs.c | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index 86017eda1f0..e0b31a2a1da 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -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); -- 2.20.1