net: lib: zperf: optional server support

Make the zperf server support optional, if only upload throughput
testing is required. This reduces the resources required to operate.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

doc/releases/migration-guide-4.2.rst

@@ -296,6 +296,10 @@ Networking
   :c:macro:`HTTPS_SERVICE_DEFINE_EMPTY`, :c:macro:`HTTP_SERVICE_DEFINE` and
   :c:macro:`HTTPS_SERVICE_DEFINE`.
 
+* :kconfig:option:`NET_ZPERF` no longer includes server support by default. To use
+  the server commands, enable :kconfig:option:`NET_ZPERF_SERVER`. If server support
+  is not needed, :kconfig:option:`ZVFS_POLL_MAX` can possibly be reduced.
+
 SPI
 ===
 

subsys/net/lib/zperf/CMakeLists.txt

@@ -4,13 +4,16 @@ zephyr_library_named(zperf)
 
 zephyr_library_sources(
   zperf_common.c
-  zperf_session.c
-  zperf_udp_receiver.c
   zperf_udp_uploader.c
-  zperf_tcp_receiver.c
   zperf_tcp_uploader.c
 )
 
+if(CONFIG_NET_ZPERF_SERVER)
+  zephyr_library_sources(zperf_session.c)
+  zephyr_library_sources(zperf_udp_receiver.c)
+  zephyr_library_sources(zperf_tcp_receiver.c)
+endif()
+
 zephyr_library_sources_ifdef(CONFIG_NET_SHELL
   zperf_shell.c
 )

subsys/net/lib/zperf/Kconfig

@@ -5,7 +5,6 @@
 menuconfig NET_ZPERF
 	bool "zperf library"
 	select NET_CONTEXT_RCVTIMEO if NET_NATIVE_UDP
-	select NET_SOCKETS_SERVICE
 	select NET_SOCKETS
 	help
 	  This option enables zperf library, which allows to generate
@@ -47,8 +46,15 @@ config NET_ZPERF_MAX_PACKET_SIZE
 	help
 	  Upper size limit for packets sent by zperf.
 
+config NET_ZPERF_SERVER
+	bool "zperf server support"
+	select NET_SOCKETS_SERVICE
+	help
+	  Support running a zperf server for testing downloads from the application
+
 config NET_ZPERF_MAX_SESSIONS
 	int "Maximum number of zperf sessions"
+	depends on NET_ZPERF_SERVER
 	default 4
 	help
 	  Upper size limit for connections handled by zperf.

subsys/net/lib/zperf/zperf_common.c

@@ -237,7 +237,9 @@ static int zperf_init(void)
 	zperf_udp_uploader_init();
 	zperf_tcp_uploader_init();
 
-	zperf_session_init();
+	if (IS_ENABLED(CONFIG_NET_ZPERF_SERVER)) {
+		zperf_session_init();
+	}
 
 	if (IS_ENABLED(CONFIG_NET_SHELL)) {
 		zperf_shell_init();

subsys/net/lib/zperf/zperf_shell.c

@@ -200,6 +200,8 @@ static int parse_ipv4_addr(const struct shell *sh, char *host, char *port,
 	return 0;
 }
 
+#ifdef CONFIG_NET_ZPERF_SERVER
+
 static int zperf_bind_host(const struct shell *sh,
 			   size_t argc, char *argv[],
 			   struct zperf_download_params *param)
@@ -233,6 +235,8 @@ static int zperf_bind_host(const struct shell *sh,
 	return 0;
 }
 
+#endif
+
 static int cmd_setip(const struct shell *sh, size_t argc, char *argv[])
 {
 	int start = 0;
@@ -311,6 +315,8 @@ static int cmd_setip(const struct shell *sh, size_t argc, char *argv[])
 	return 0;
 }
 
+#ifdef CONFIG_NET_ZPERF_SERVER
+
 static void udp_session_cb(enum zperf_status status,
 			   struct zperf_results *result,
 			   void *user_data)
@@ -475,6 +481,8 @@ static int cmd_udp_download(const struct shell *sh, size_t argc,
 	}
 }
 
+#endif
+
 static void shell_udp_upload_print_stats(const struct shell *sh,
 					 struct zperf_results *results)
 {
@@ -1291,6 +1299,8 @@ static int cmd_connectap(const struct shell *sh, size_t argc, char *argv[])
 	return 0;
 }
 
+#ifdef CONFIG_NET_ZPERF_SERVER
+
 static void tcp_session_cb(enum zperf_status status,
 			   struct zperf_results *result,
 			   void *user_data)
@@ -1395,6 +1405,8 @@ static int cmd_tcp_download(const struct shell *sh, size_t argc,
 	}
 }
 
+#endif
+
 static int cmd_version(const struct shell *sh, size_t argc, char *argv[])
 {
 	shell_fprintf(sh, SHELL_NORMAL, "Version: %s\nConfig: %s\n",
@@ -1454,11 +1466,15 @@ void zperf_shell_init(void)
 	}
 }
 
+#ifdef CONFIG_NET_ZPERF_SERVER
+
 SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_tcp_download,
 	SHELL_CMD(stop, NULL, "Stop TCP server\n", cmd_tcp_download_stop),
 	SHELL_SUBCMD_SET_END
 );
 
+#endif
+
 SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_tcp,
 	SHELL_CMD(upload, NULL,
 		  "[<options>] <dest ip> <dest port> <duration> <packet size>[K]\n"
@@ -1510,18 +1526,22 @@ SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_tcp,
 #endif
 		  ,
 		  cmd_tcp_upload2),
+#ifdef CONFIG_NET_ZPERF_SERVER
 	SHELL_CMD(download, &zperf_cmd_tcp_download,
 		  "[<port>]:  Server port to listen on/connect to\n"
 		  "[<host>]:  Bind to <host>, an interface address\n"
 		  "Example: tcp download 5001 192.168.0.1\n",
 		  cmd_tcp_download),
+#endif
 	SHELL_SUBCMD_SET_END
 );
 
+#ifdef CONFIG_NET_ZPERF_SERVER
 SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_udp_download,
 	SHELL_CMD(stop, NULL, "Stop UDP server\n", cmd_udp_download_stop),
 	SHELL_SUBCMD_SET_END
 );
+#endif
 
 SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_udp,
 	SHELL_CMD(upload, NULL,
@@ -1577,6 +1597,7 @@ SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_udp,
 #endif
 		  ,
 		  cmd_udp_upload2),
+#ifdef CONFIG_NET_ZPERF_SERVER
 	SHELL_CMD(download, &zperf_cmd_udp_download,
 		  "[<options>] command options (optional): [-I eth0]\n"
 		  "[<port>]:  Server port to listen on/connect to\n"
@@ -1585,6 +1606,7 @@ SHELL_STATIC_SUBCMD_SET_CREATE(zperf_cmd_udp,
 		  "-I <interface name>: Specify host interface name\n"
 		  "Example: udp download 5001 192.168.0.1\n",
 		  cmd_udp_download),
+#endif
 	SHELL_SUBCMD_SET_END
 );