ath6kl: Add debugfs entry to modify roaming parameters.
Firmware initiates roaming only after it reaches a rssi of 20.
This lower rssi threshold can be modified through a wmi command
to modify the roaming behavior.
kvalo: rename debugfs functions and move comment about rssi units next to
ath6kl_wmi_set_roam_lrssi_cmd()
Signed-off-by: Vivek Natarajan <nataraja@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index cb89776..8bc4753 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -714,6 +714,51 @@
.llseek = default_llseek,
};
+static ssize_t ath6kl_lrssi_roam_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath6kl *ar = file->private_data;
+ unsigned long lrssi_roam_threshold;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &lrssi_roam_threshold))
+ return -EINVAL;
+
+ ar->lrssi_roam_threshold = lrssi_roam_threshold;
+
+ ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
+
+ return count;
+}
+
+static ssize_t ath6kl_lrssi_roam_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath6kl *ar = file->private_data;
+ char buf[32];
+ unsigned int len;
+
+ len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_lrssi_roam_threshold = {
+ .read = ath6kl_lrssi_roam_read,
+ .write = ath6kl_lrssi_roam_write,
+ .open = ath6kl_debugfs_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
int ath6kl_debug_init(struct ath6kl *ar)
{
ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
@@ -760,6 +805,8 @@
debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
&fops_reg_dump);
+ debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
+ ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
return 0;
}