1 files changed, 76 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index c3df5aa..370b66c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -348,12 +348,86 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
 	return count;
 }
 
+
+
+static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
+				       size_t count, loff_t *ppos)
+{
+	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct ieee80211_channel *channels = NULL;
+	const struct ieee80211_supported_band *supp_band = NULL;
+	int pos = 0, i, bufsz = PAGE_SIZE;
+	char *buf;
+	ssize_t ret;
+
+	if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
+		return -EAGAIN;
+
+	buf = kzalloc(bufsz, GFP_KERNEL);
+	if (!buf) {
+		IWL_ERROR("Can not allocate Buffer\n");
+		return -ENOMEM;
+	}
+
+	supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
+	channels = supp_band->channels;
+
+	pos += scnprintf(buf + pos, bufsz - pos,
+			"Displaying %d channels in 2.4GHz band 802.11bg):\n",
+			 supp_band->n_channels);
+
+	for (i = 0; i < supp_band->n_channels; i++)
+		pos += scnprintf(buf + pos, bufsz - pos,
+				"%d: %ddBm: BSS%s%s, %s.\n",
+				ieee80211_frequency_to_channel(
+				channels[i].center_freq),
+				channels[i].max_power,
+				channels[i].flags & IEEE80211_CHAN_RADAR ?
+				" (IEEE 802.11h required)" : "",
+				(!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
+				|| (channels[i].flags &
+				IEEE80211_CHAN_RADAR)) ? "" :
+				", IBSS",
+				channels[i].flags &
+				IEEE80211_CHAN_PASSIVE_SCAN ?
+				"passive only" : "active/passive");
+
+	supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
+	channels = supp_band->channels;
+
+	pos += scnprintf(buf + pos, bufsz - pos,
+			"Displaying %d channels in 5.2GHz band (802.11a)\n",
+			supp_band->n_channels);
+
+	for (i = 0; i < supp_band->n_channels; i++)
+		pos += scnprintf(buf + pos, bufsz - pos,
+				"%d: %ddBm: BSS%s%s, %s.\n",
+				ieee80211_frequency_to_channel(
+				channels[i].center_freq),
+				channels[i].max_power,
+				channels[i].flags & IEEE80211_CHAN_RADAR ?
+				" (IEEE 802.11h required)" : "",
+				((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
+				|| (channels[i].flags &
+				IEEE80211_CHAN_RADAR)) ? "" :
+				", IBSS",
+				channels[i].flags &
+				IEEE80211_CHAN_PASSIVE_SCAN ?
+				"passive only" : "active/passive");
+
+	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+	kfree(buf);
+	return ret;
+}
+
+
 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 DEBUGFS_WRITE_FILE_OPS(log_event);
 DEBUGFS_READ_FILE_OPS(eeprom);
 DEBUGFS_READ_FILE_OPS(stations);
 DEBUGFS_READ_FILE_OPS(rx_statistics);
 DEBUGFS_READ_FILE_OPS(tx_statistics);
+DEBUGFS_READ_FILE_OPS(channels);
 
 /*
  * Create the debugfs files and directories
@@ -387,6 +461,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
 	DEBUGFS_ADD_FILE(stations, data);
 	DEBUGFS_ADD_FILE(rx_statistics, data);
 	DEBUGFS_ADD_FILE(tx_statistics, data);
+	DEBUGFS_ADD_FILE(channels, data);
 	DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
 	DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
 			 &priv->disable_chain_noise_cal);
@@ -415,6 +490,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv)
 	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
 	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
 	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
+	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels);
 	DEBUGFS_REMOVE(priv->dbgfs->dir_data);
 	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
 	DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);