iwlagn: add "echo test" command to debugfs

For command queue testing, add "echo test" to debugfs

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 9cb6c75..2cc6399 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1734,12 +1734,18 @@ int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 
 int iwl_cmd_echo_test(struct iwl_priv *priv)
 {
+       int ret;
        struct iwl_host_cmd cmd = {
                .id = REPLY_ECHO,
                .flags = CMD_SYNC,
        };
 
-       return iwl_trans_send_cmd(trans(priv), &cmd);
+       ret = iwl_trans_send_cmd(trans(priv), &cmd);
+       if (ret)
+               IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
+       else
+               IWL_DEBUG_INFO(priv, "echo testing pass\n");
+       return ret;
 }
 
 static inline int iwl_check_stuck_queue(struct iwl_priv *priv, int txq)

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index 6d49dfb..ea1452c 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -2444,6 +2444,23 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
        return count;
 }
 
+static ssize_t iwl_dbgfs_echo_test_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;
+
+       memset(buf, 0, sizeof(buf));
+       buf_size = min(count, sizeof(buf) -  1);
+       if (copy_from_user(buf, user_buf, buf_size))
+               return -EFAULT;
+
+       iwl_cmd_echo_test(priv);
+       return count;
+}
+
 DEBUGFS_READ_FILE_OPS(rx_statistics);
 DEBUGFS_READ_FILE_OPS(tx_statistics);
 DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
@@ -2467,6 +2484,7 @@ DEBUGFS_WRITE_FILE_OPS(wd_timeout);
 DEBUGFS_READ_FILE_OPS(bt_traffic);
 DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
 DEBUGFS_READ_FILE_OPS(reply_tx_error);
+DEBUGFS_WRITE_FILE_OPS(echo_test);
 
 #ifdef CONFIG_IWLWIFI_DEBUG
 static ssize_t iwl_dbgfs_debug_level_read(struct file *file,
@@ -2575,6 +2593,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
        DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
        DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
        DEBUGFS_ADD_FILE(wd_timeout, dir_debug, S_IWUSR);
+       DEBUGFS_ADD_FILE(echo_test, dir_debug, S_IWUSR);
        if (iwl_advanced_bt_coexist(priv))
                DEBUGFS_ADD_FILE(bt_traffic, dir_debug, S_IRUSR);
 #ifdef CONFIG_IWLWIFI_DEBUG

diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index bcd7f64..bbd6740 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -47,6 +47,7 @@ const char *get_cmd_string(u8 cmd)
        switch (cmd) {
                IWL_CMD(REPLY_ALIVE);
                IWL_CMD(REPLY_ERROR);
+               IWL_CMD(REPLY_ECHO);
                IWL_CMD(REPLY_RXON);
                IWL_CMD(REPLY_RXON_ASSOC);
                IWL_CMD(REPLY_QOS_PARAM);