doc: zbus: update iperf version information

Update iperf version information for use with zperf. Note the fallback
kconfig option for versions older than `2.0.10`, and remove the warning
about `LAST PACKET NOT RECEIVED!!!` since it is not longer present with
the fixed UDP header.

Signed-off-by: Jordan Yates <[email protected]>

Author: JordanYates

doc/connectivity/networking/api/zperf.rst

@@ -13,13 +13,8 @@ Overview
 zperf is a shell utility which allows to generate network traffic in Zephyr. The
 tool may be used to evaluate network bandwidth.
 
-zperf is compatible with iPerf_2.0.5. Note that in newer iPerf versions,
-an error message like this is printed and the server reported statistics
-are missing.
-
-.. code-block:: console
-
-   LAST PACKET NOT RECEIVED!!!
+zperf is compatible with iPerf 2.0.10 and newer. For compatability with older versions,
+enable :kconfig:option:`CONFIG_NET_ZPERF_LEGACY_HEADER_COMPAT`.
 
 zperf can be enabled in any application, a dedicated sample is also present
 in Zephyr. See :zephyr:code-sample:`zperf sample application <zperf>` for details.

samples/net/zperf/README.rst

@@ -13,13 +13,8 @@ allows to evaluate network bandwidth.
 Features
 *********
 
-- Compatible with iPerf_2.0.5. Note that in newer iPerf versions,
-  an error message like this is printed and the server reported statistics
-  are missing.
-
-.. code-block:: console
-
-   LAST PACKET NOT RECEIVED!!!
+- Compatible with iPerf v2.0.10 and newer. For older versions, enable
+  :kconfig:option:`CONFIG_NET_ZPERF_LEGACY_HEADER_COMPAT`.
 
 - Client or server mode allowed without need to modify the source code.
 
@@ -50,7 +45,7 @@ sample does not fit into target platform RAM, reduce the following configs:
 Requirements
 ************
 
-- iPerf 2.0.5 installed on the host machine
+- iPerf 2.0.10 or newer installed on the host machine
 - Supported board
 
 Depending on the network technology chosen, extra steps may be required