ath9k_htc: Add a debugfs file showing endpoint status

Location: ath9k_htc/phy#/queue

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index b9c7bec9dd4554ec89eec381a79f94e4a6c4df38..b40753ca6706104c855965113324f17585ce5ba7 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -339,6 +339,7 @@ struct ath9k_debug {
        struct dentry *debugfs_xmit;
        struct dentry *debugfs_recv;
        struct dentry *debugfs_slot;
+       struct dentry *debugfs_queue;
        struct ath_tx_stats tx_stats;
        struct ath_rx_stats rx_stats;
        u32 txrate;

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c
index 119cc544cea0d21c2cadf3f62a15aecce525d888..961bec20d140f8e8a5b6f27a26db2e4e4c5c314f 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c
@@ -279,6 +279,53 @@ static const struct file_operations fops_slot = {
        .llseek = default_llseek,
 };
 
+static ssize_t read_file_queue(struct file *file, char __user *user_buf,
+                              size_t count, loff_t *ppos)
+{
+       struct ath9k_htc_priv *priv = file->private_data;
+       char buf[512];
+       unsigned int len = 0;
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Mgmt endpoint", skb_queue_len(&priv->tx.mgmt_ep_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Cab endpoint", skb_queue_len(&priv->tx.cab_ep_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Data BE endpoint", skb_queue_len(&priv->tx.data_be_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Data BK endpoint", skb_queue_len(&priv->tx.data_bk_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Data VI endpoint", skb_queue_len(&priv->tx.data_vi_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Data VO endpoint", skb_queue_len(&priv->tx.data_vo_queue));
+
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Failed queue", skb_queue_len(&priv->tx.tx_failed));
+
+       spin_lock_bh(&priv->tx.tx_lock);
+       len += snprintf(buf + len, sizeof(buf) - len, "%16s : %3d\n",
+                       "Queued count", priv->tx.queued_cnt);
+       spin_unlock_bh(&priv->tx.tx_lock);
+
+       if (len > sizeof(buf))
+               len = sizeof(buf);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+}
+
+static const struct file_operations fops_queue = {
+       .read = read_file_queue,
+       .open = ath9k_debugfs_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
 int ath9k_htc_init_debug(struct ath_hw *ah)
 {
        struct ath_common *common = ath9k_hw_common(ah);
@@ -317,6 +364,12 @@ int ath9k_htc_init_debug(struct ath_hw *ah)
        if (!priv->debug.debugfs_slot)
                goto err;
 
+       priv->debug.debugfs_queue = debugfs_create_file("queue", S_IRUSR,
+                                                       priv->debug.debugfs_phy,
+                                                       priv, &fops_queue);
+       if (!priv->debug.debugfs_queue)
+               goto err;
+
        return 0;
 
 err:
@@ -329,6 +382,7 @@ void ath9k_htc_exit_debug(struct ath_hw *ah)
        struct ath_common *common = ath9k_hw_common(ah);
        struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
 
+       debugfs_remove(priv->debug.debugfs_queue);
        debugfs_remove(priv->debug.debugfs_slot);
        debugfs_remove(priv->debug.debugfs_recv);
        debugfs_remove(priv->debug.debugfs_xmit);