wl12xx: add beacon_filtering debugfs file

Allow enabling/disabling beacon_filtering by debugfs,
in order to reduce the log size while debugging (beacon
filtering is disabled by default in AP mode, as beacons
are needed for ERP configuration).

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
index d59354f..d227385 100644 (file)
--- a/drivers/net/wireless/wl12xx/debugfs.c
+++ b/drivers/net/wireless/wl12xx/debugfs.c
@@ -655,6 +655,47 @@ static const struct file_operations rx_streaming_always_ops = {
        .llseek = default_llseek,
 };
 
+static ssize_t beacon_filtering_write(struct file *file,
+                                     const char __user *user_buf,
+                                     size_t count, loff_t *ppos)
+{
+       struct wl1271 *wl = file->private_data;
+       char buf[10];
+       size_t len;
+       unsigned long value;
+       int ret;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+       buf[len] = '\0';
+
+       ret = kstrtoul(buf, 0, &value);
+       if (ret < 0) {
+               wl1271_warning("illegal value for beacon_filtering!");
+               return -EINVAL;
+       }
+
+       mutex_lock(&wl->mutex);
+
+       ret = wl1271_ps_elp_wakeup(wl);
+       if (ret < 0)
+               goto out;
+
+       ret = wl1271_acx_beacon_filter_opt(wl, !!value);
+
+       wl1271_ps_elp_sleep(wl);
+out:
+       mutex_unlock(&wl->mutex);
+       return count;
+}
+
+static const struct file_operations beacon_filtering_ops = {
+       .write = beacon_filtering_write,
+       .open = wl1271_open_file_generic,
+       .llseek = default_llseek,
+};
+
 static int wl1271_debugfs_add_files(struct wl1271 *wl,
                                     struct dentry *rootdir)
 {
@@ -767,6 +808,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
        DEBUGFS_ADD(driver_state, rootdir);
        DEBUGFS_ADD(dtim_interval, rootdir);
        DEBUGFS_ADD(beacon_interval, rootdir);
+       DEBUGFS_ADD(beacon_filtering, rootdir);
 
        streaming = debugfs_create_dir("rx_streaming", rootdir);
        if (!streaming || IS_ERR(streaming))