Maemo patchset 20101501+0m5

[h-e-n] / net / mac80211 / debugfs.c

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 24ce544..f47da21 100644 (file)
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -190,6 +190,64 @@ DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
 
 
+static ssize_t rssisignal_read(struct file *file, char __user *user_buf,
+                           size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       char buf[100];
+       int res;
+
+       res = scnprintf(buf, sizeof(buf), "empty\n");
+       return simple_read_from_buffer(user_buf, count, ppos, buf, res);
+}
+
+static ssize_t rssisignal_write(struct file *file, const char __user *user_buf,
+                               size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       struct ieee80211_sub_if_data *sdata;
+       union iwreq_data wrqu;
+       char buf[100], *endp;
+       size_t buf_len;
+       int val;
+
+       memset(buf, 0, sizeof(buf));
+       buf_len = min(count, sizeof(buf) - 1);
+
+       if (copy_from_user(buf, user_buf, buf_len))
+               return -EFAULT;
+
+       val = strict_strtoul(buf, &endp, 10);
+       if (endp == buf)
+               return -EFAULT;
+
+       switch (val) {
+       case 0:
+               buf_len = snprintf(buf, sizeof(buf), "LOWSIGNAL");
+               break;
+       case 1:
+       default:
+               buf_len = snprintf(buf, sizeof(buf), "HIGHSIGNAL");
+               break;
+       }
+
+       /* we should hold the RTNL here so can safely walk the list */
+       sdata = list_first_entry(&local->interfaces,
+                                struct ieee80211_sub_if_data, list);
+
+       memset(&wrqu, 0, sizeof(wrqu));
+       wrqu.data.length = buf_len;
+       wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf);
+
+       return count;
+}
+
+static const struct file_operations rssisignal_ops = {
+       .read = rssisignal_read,
+       .write = rssisignal_write,
+       .open = mac80211_open_file_generic,
+};
+
 void debugfs_hw_add(struct ieee80211_local *local)
 {
        struct dentry *phyd = local->hw.wiphy->debugfsdir;
@@ -211,6 +269,10 @@ void debugfs_hw_add(struct ieee80211_local *local)
        DEBUGFS_ADD(total_ps_buffered);
        DEBUGFS_ADD(wep_iv);
 
+       local->debugfs.rssisignal = debugfs_create_file("rssisignal", 0600,
+                                                       phyd,
+                                                       local, &rssisignal_ops);
+
        statsd = debugfs_create_dir("statistics", phyd);
        local->debugfs.statistics = statsd;