samples: net: zperf: allow networking code to be relocated to RAM

Enable relocation of key networking stack functions to RAM when running
the zperf example. This will enable better performance on platforms with
fast code RAM.

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

samples/net/zperf/CMakeLists.txt

@@ -8,3 +8,17 @@ project(zperf)
 target_sources(app PRIVATE
   src/main.c
   )
+
+if (CONFIG_NET_SAMPLE_CODE_RELOCATE)
+  # Relocate key networking stack components and L2 layer to RAM
+  zephyr_code_relocate(LIBRARY subsys__net__ip
+    LOCATION "${CONFIG_NET_SAMPLE_CODE_RAM_NAME}_TEXT" NOKEEP)
+  zephyr_code_relocate(LIBRARY subsys__net
+    LOCATION "${CONFIG_NET_SAMPLE_CODE_RAM_NAME}_TEXT" NOKEEP)
+if (CONFIG_NET_L2_ETHERNET)
+  zephyr_code_relocate(LIBRARY drivers__ethernet
+    LOCATION "${CONFIG_NET_SAMPLE_CODE_RAM_NAME}_TEXT" NOKEEP)
+  zephyr_code_relocate(LIBRARY subsys__net__l2__ethernet
+    LOCATION "${CONFIG_NET_SAMPLE_CODE_RAM_NAME}_TEXT" NOKEEP)
+endif()
+endif()

samples/net/zperf/Kconfig

@@ -0,0 +1,22 @@
+# Copyright 2023 NXP
+# SPDX-License-Identifier: Apache-2.0
+
+source "Kconfig.zephyr"
+
+config NET_SAMPLE_CODE_RELOCATE
+	bool "Relocate networking code into RAM"
+	select CODE_DATA_RELOCATION
+	help
+	  Relocate networking code into RAM when running the zperf
+	  sample. Can improve performance on platforms with fast code
+	  RAM.
+
+if NET_SAMPLE_CODE_RELOCATE
+
+config NET_SAMPLE_CODE_RAM_NAME
+	string "Networking code RAM location"
+	default "RAM"
+	help
+	  Region to relocate networking code to
+
+endif # NET_SAMPLE_CODE_RELOCATE