From 77bf69c3dc6ef6c17741cdf0f81af911378596e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ji=C5=99=C3=AD=20Klime=C5=A1?= <jklimes@redhat.com>
Date: Tue, 18 Aug 2015 09:37:48 +0200
Subject: [PATCH] libnm: add utility functions for getting 2.4 GHz and 5 GHz
 Wi-Fi frequencies

nm_utils_wifi_2ghz_freqs()
nm_utils_wifi_5ghz_freqs()

(cherry picked from commit 1a6b631690481bb195130c44810ca9d55e7da025)
---
 libnm-core/nm-utils.c | 55 +++++++++++++++++++++++++++++++++++++++++++
 libnm-core/nm-utils.h |  4 ++++
 libnm/libnm.ver       |  2 ++
 3 files changed, 61 insertions(+)

diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c
index 873f9ac18e..70450af11f 100644
--- a/libnm-core/nm-utils.c
+++ b/libnm-core/nm-utils.c
@@ -2692,6 +2692,61 @@ nm_utils_wifi_is_channel_valid (guint32 channel, const char *band)
 		return FALSE;
 }
 
+static const guint *
+_wifi_freqs (gboolean bg_band)
+{
+	static guint *freqs_2ghz = NULL;
+	static guint *freqs_5ghz = NULL;
+	guint *freqs;
+
+	freqs = bg_band ? freqs_2ghz : freqs_5ghz;
+	if (G_UNLIKELY (freqs == NULL)) {
+		struct cf_pair *table;
+		int i;
+
+		table = bg_band ? bg_table : a_table;
+		freqs = g_new0 (guint, bg_band ? G_N_ELEMENTS (bg_table) : G_N_ELEMENTS (a_table));
+		for (i = 0; table[i].chan; i++)
+			freqs[i] = table[i].freq;
+		freqs[i] = 0;
+		if (bg_band)
+			freqs_2ghz = freqs;
+		else
+			freqs_5ghz = freqs;
+	}
+	return freqs;
+}
+
+/**
+ * nm_utils_wifi_2ghz_freqs:
+ *
+ * Utility function to return 2.4 GHz Wi-Fi frequencies (802.11bg band).
+ *
+ * Returns: zero-terminated array of frequencies numbers (in MHz)
+ *
+ * Since: 1.0.6
+ **/
+const guint *
+nm_utils_wifi_2ghz_freqs (void)
+{
+	return _wifi_freqs (TRUE);
+}
+
+/**
+ * nm_utils_wifi_5ghz_freqs:
+ *
+ * Utility function to return 5 GHz Wi-Fi frequencies (802.11a band).
+ *
+ * Returns: zero-terminated array of frequencies numbers (in MHz)
+ *
+ * Since: 1.0.6
+ **/
+const guint *
+nm_utils_wifi_5ghz_freqs (void)
+{
+	return _wifi_freqs (FALSE);
+}
+
 /**
  * nm_utils_wifi_strength_bars:
  * @strength: the access point strength, from 0 to 100
diff --git a/libnm-core/nm-utils.h b/libnm-core/nm-utils.h
index 8c22cfd168..45bdf757ea 100644
--- a/libnm-core/nm-utils.h
+++ b/libnm-core/nm-utils.h
@@ -140,6 +140,10 @@ guint32 nm_utils_wifi_freq_to_channel (guint32 freq);
 guint32 nm_utils_wifi_channel_to_freq (guint32 channel, const char *band);
 guint32 nm_utils_wifi_find_next_channel (guint32 channel, int direction, char *band);
 gboolean nm_utils_wifi_is_channel_valid (guint32 channel, const char *band);
+NM_AVAILABLE_IN_1_0_6
+const guint *nm_utils_wifi_2ghz_freqs (void);
+NM_AVAILABLE_IN_1_0_6
+const guint *nm_utils_wifi_5ghz_freqs (void);
 
 const char *nm_utils_wifi_strength_bars (guint8 strength);
 
diff --git a/libnm/libnm.ver b/libnm/libnm.ver
index 9d20ebb64a..4bf77938ec 100644
--- a/libnm/libnm.ver
+++ b/libnm/libnm.ver
@@ -859,5 +859,7 @@ global:
 	nm_device_wifi_request_scan_options_async;
 	nm_metered_get_type;
 	nm_setting_connection_get_metered;
+	nm_utils_wifi_2ghz_freqs;
+	nm_utils_wifi_5ghz_freqs;
 } libnm_1_0_4;