From 5140962436f816cedfe6f9ff57c699e4d027af09 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@midokura.com>
Date: Mon, 15 Mar 2021 11:07:46 +0900
Subject: [PATCH] netutils/iperf/README.md: document what this is

---
 netutils/iperf/README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/netutils/iperf/README.md b/netutils/iperf/README.md
index ea95f1352..7d76d8058 100644
--- a/netutils/iperf/README.md
+++ b/netutils/iperf/README.md
@@ -1,3 +1,14 @@
+Overview
+================================================================
+
+This is a NuttX port of the ESP-IDF iperf example. [1]
+
+It doesn't support all features in standard iperf.
+It's supposed to be compatible with iperf version 2.x. [2]
+
+[1] https://github.com/espressif/esp-idf/tree/master/examples/wifi/iperf
+[2] https://sourceforge.net/projects/iperf2/
+
 Configuring NuttX to use your Wireless Router (aka Access Point)
 ================================================================