summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ath9k
diff options
context:
space:
mode:
authorSujith Manoharan <c_manoha@qca.qualcomm.com>2012-11-21 18:13:12 +0530
committerJohn W. Linville <linville@tuxdriver.com>2012-11-21 14:16:03 -0500
commitc0b74876ee4873dc89d80b59f5e890a1d0a87be1 (patch)
tree089c65ca89e03a436ab48ff518a4a261f60bfe16 /drivers/net/wireless/ath/ath9k
parent78ef731ce549dd9baf6eba8cf52f61727613690a (diff)
ath9k: Add a debugfs file to dump queue statistics
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k')
-rw-r--r--drivers/net/wireless/ath/ath9k/debug.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index f9df82bdd21..086dee84162 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -558,6 +558,50 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
return retval;
}
+static ssize_t read_file_queues(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_txq *txq;
+ char *buf;
+ unsigned int len = 0, size = 1024;
+ ssize_t retval = 0;
+ int i;
+ char *qname[4] = {"VO", "VI", "BE", "BK"};
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+ txq = sc->tx.txq_map[i];
+ len += snprintf(buf + len, size - len, "(%s): ", qname[i]);
+
+ ath_txq_lock(sc, txq);
+
+ len += snprintf(buf + len, size - len, "%s: %d ",
+ "qnum", txq->axq_qnum);
+ len += snprintf(buf + len, size - len, "%s: %2d ",
+ "qdepth", txq->axq_depth);
+ len += snprintf(buf + len, size - len, "%s: %2d ",
+ "ampdu-depth", txq->axq_ampdu_depth);
+ len += snprintf(buf + len, size - len, "%s: %3d ",
+ "pending", txq->pending_frames);
+ len += snprintf(buf + len, size - len, "%s: %d\n",
+ "stopped", txq->stopped);
+
+ ath_txq_unlock(sc, txq);
+ }
+
+ if (len > size)
+ len = size;
+
+ retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+
+ return retval;
+}
+
static ssize_t read_file_stations(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -828,6 +872,13 @@ static const struct file_operations fops_xmit = {
.llseek = default_llseek,
};
+static const struct file_operations fops_queues = {
+ .read = read_file_queues,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
static const struct file_operations fops_stations = {
.read = read_file_stations,
.open = simple_open,
@@ -1553,6 +1604,8 @@ int ath9k_init_debug(struct ath_hw *ah)
&fops_interrupt);
debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_xmit);
+ debugfs_create_file("queues", S_IRUSR, sc->debug.debugfs_phy, sc,
+ &fops_queues);
debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
&sc->tx.txq_max_pending[IEEE80211_AC_BK]);
debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,