ath10k: Implement sta_add_debugfs
Add per station debugfs files when a station is added to mac80211's
station list. This helps to group peer specific debugfs entries
altogether. Right now this callback adds support to test aggregation
procedures (addba/addba_resp/delba) manually.
To enable automatic aggregation in target,
echo 0 >/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/
stations/XX:XX:XX:XX:XX:XX/aggr_mode
For manual mode,
echo 1 >/sys/kernel/debug/ieee80211/phyX/netdev:wlanX/
stations/XX:XX:XX:XX:XX:XX/aggr_mode
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/debugfs_sta.c b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
new file mode 100644
index 0000000..5df9673
--- /dev/null
+++ b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2014 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "core.h"
+#include "wmi-ops.h"
+#include "debug.h"
+
+static ssize_t ath10k_dbg_sta_read_aggr_mode(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ieee80211_sta *sta = file->private_data;
+ struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
+ struct ath10k *ar = arsta->arvif->ar;
+ char buf[32];
+ int len = 0;
+
+ mutex_lock(&ar->conf_mutex);
+ len = scnprintf(buf, sizeof(buf) - len, "aggregation mode: %s\n",
+ (arsta->aggr_mode == ATH10K_DBG_AGGR_MODE_AUTO) ?
+ "auto" : "manual");
+ mutex_unlock(&ar->conf_mutex);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t ath10k_dbg_sta_write_aggr_mode(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ieee80211_sta *sta = file->private_data;
+ struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
+ struct ath10k *ar = arsta->arvif->ar;
+ u32 aggr_mode;
+ int ret;
+
+ if (kstrtouint_from_user(user_buf, count, 0, &aggr_mode))
+ return -EINVAL;
+
+ if (aggr_mode >= ATH10K_DBG_AGGR_MODE_MAX)
+ return -EINVAL;
+
+ mutex_lock(&ar->conf_mutex);
+ if ((ar->state != ATH10K_STATE_ON) ||
+ (aggr_mode == arsta->aggr_mode)) {
+ ret = count;
+ goto out;
+ }
+
+ ret = ath10k_wmi_addba_clear_resp(ar, arsta->arvif->vdev_id, sta->addr);
+ if (ret) {
+ ath10k_warn(ar, "failed to clear addba session ret: %d\n", ret);
+ goto out;
+ }
+
+ arsta->aggr_mode = aggr_mode;
+out:
+ mutex_unlock(&ar->conf_mutex);
+ return ret;
+}
+
+static const struct file_operations fops_aggr_mode = {
+ .read = ath10k_dbg_sta_read_aggr_mode,
+ .write = ath10k_dbg_sta_write_aggr_mode,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+void ath10k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, struct dentry *dir)
+{
+ debugfs_create_file("aggr_mode", S_IRUGO | S_IWUSR, dir, sta,
+ &fops_aggr_mode);
+}