From e180eaed93f5cfdc619aed7efb1657eb64d7f1e9 Mon Sep 17 00:00:00 2001
From: Alexander Krotov <krotov@iitp.ru>
Date: Thu, 3 May 2018 12:02:34 +0300
Subject: [PATCH] wifi: add comparison operator for WifiMode

---
 src/wifi/model/wifi-mode.cc | 13 +++++++++++++
 src/wifi/model/wifi-mode.h  |  1 +
 2 files changed, 14 insertions(+)

diff --git a/src/wifi/model/wifi-mode.cc b/src/wifi/model/wifi-mode.cc
index 7fced2aaa..e5065a7c5 100644
--- a/src/wifi/model/wifi-mode.cc
+++ b/src/wifi/model/wifi-mode.cc
@@ -39,6 +39,19 @@ bool operator == (const WifiMode &a, const WifiMode &b)
 {
   return a.GetUid () == b.GetUid ();
 }
+/**
+ * Compare two WifiModes
+ *
+ * \param a WifiMode
+ * \param b WifiMode
+ *
+ * \return true if a is less than b,
+ *         false otherwise
+ */
+bool operator < (const WifiMode &a, const WifiMode &b)
+{
+  return a.GetUid () < b.GetUid ();
+}
 /**
  * Serialize WifiMode to ostream (human-readable).
  *
diff --git a/src/wifi/model/wifi-mode.h b/src/wifi/model/wifi-mode.h
index 3826e4ede..d102fbc1b 100644
--- a/src/wifi/model/wifi-mode.h
+++ b/src/wifi/model/wifi-mode.h
@@ -237,6 +237,7 @@ private:
 
 /// equality operator
 bool operator == (const WifiMode &a, const WifiMode &b);
+bool operator < (const WifiMode &a, const WifiMode &b);
 std::ostream & operator << (std::ostream & os, const WifiMode &mode);
 std::istream & operator >> (std::istream &is, WifiMode &mode);