[PATCHv5 11/13] net/lwip: connection between cmd and lwip apps

Maxim Uvarov maxim.uvarov at linaro.org
Wed Aug 2 16:06:56 CEST 2023


Signed-off-by: Maxim Uvarov <maxim.uvarov at linaro.org>
---
 lib/lwip/Makefile   |   2 +
 lib/lwip/cmd-lwip.c | 308 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 310 insertions(+)
 create mode 100644 lib/lwip/cmd-lwip.c

diff --git a/lib/lwip/Makefile b/lib/lwip/Makefile
index 87ed99a230..25299377cd 100644
--- a/lib/lwip/Makefile
+++ b/lib/lwip/Makefile
@@ -65,6 +65,8 @@ obj-$(CONFIG_NET) += $(LWIPDIR)/netif/ethernet.o
 obj-$(CONFIG_NET) += port/if.o
 obj-$(CONFIG_NET) += port/sys-arch.o
 
+obj-$(CONFIG_NET) += cmd-lwip.o
+
 obj-$(CONFIG_CMD_DHCP) += apps/dhcp/lwip-dhcp.o
 obj-$(CONFIG_CMD_DNS) += apps/dns/lwip-dns.o
 obj-$(CONFIG_CMD_PING) += apps/ping/
diff --git a/lib/lwip/cmd-lwip.c b/lib/lwip/cmd-lwip.c
new file mode 100644
index 0000000000..86b35ccff8
--- /dev/null
+++ b/lib/lwip/cmd-lwip.c
@@ -0,0 +1,308 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * (C) Copyright 2023 Maxim Uvarov, maxim.uvarov at linaro.org
+ */
+
+#include <common.h>
+#include <command.h>
+#include <console.h>
+#include <display_options.h>
+#include <memalign.h>
+#include <net.h>
+#include <image.h>
+
+#include "apps/dns/lwip-dns.h"
+#include "apps/ping/lwip_ping.h"
+#include "ulwip.h"
+
+extern int uboot_lwip_init(void);
+extern int uboot_lwip_loop_is_done(void);
+
+static int do_lwip_info(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
+{
+	printf("TBD: %s\n", __func__);
+	return CMD_RET_SUCCESS;
+}
+
+static int do_lwip_init(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
+{
+	if (!uboot_lwip_init())
+		return CMD_RET_SUCCESS;
+	return CMD_RET_FAILURE;
+}
+
+static int lwip_empty_tmo(void) { return 0; };
+int (*ulwip_tmo)(void) = lwip_empty_tmo;
+void ulwip_set_tmo(int (*tmo)(void))
+{
+	ulwip_tmo = tmo;
+}
+
+static void ulwip_clear_tmo(void)
+{
+	ulwip_tmo = lwip_empty_tmo;
+}
+
+static void ulwip_timeout_handler(void)
+{
+	eth_halt();
+	ulwip_tmo();
+	net_set_state(NETLOOP_FAIL);	/* we did not get the reply */
+	ulwip_loop_set(0);
+}
+
+static int ulwip_loop(void)
+{
+	ulwip_loop_set(1);
+	if (net_loop(LWIP) < 0) {
+		ulwip_loop_set(0);
+		return CMD_RET_FAILURE;
+	}
+	ulwip_loop_set(0);
+	return CMD_RET_SUCCESS;
+}
+
+#if defined(CONFIG_CMD_PING)
+int do_lwip_ping(struct cmd_tbl *cmdtp, int flag, int argc,
+		 char *const argv[])
+{
+	if (argc < 2) {
+		printf("argc = %d, error\n", argc);
+		return CMD_RET_USAGE;
+	}
+
+	uboot_lwip_init();
+
+	eth_init(); /* activate u-boot eth dev */
+
+	printf("Using %s device\n", eth_get_name());
+	printf("pinging addr: %s\n", argv[1]);
+
+	net_set_timeout_handler(1000UL, ulwip_timeout_handler);
+
+	if (lwip_ping_init(argv[1])) {
+		printf("ping init fail\n");
+		return CMD_RET_FAILURE;
+	}
+
+	ping_send_now();
+
+	return ulwip_loop();
+}
+#endif /* CONFIG_CMD_PING */
+
+#if defined(CONFIG_CMD_WGET)
+extern int lwip_wget(ulong addr, char *url);
+
+int do_lwip_wget(struct cmd_tbl *cmdtp, int flag, int argc,
+		 char *const argv[])
+{
+	char *url;
+
+	if (argc < 2) {
+		printf("argc = %d, error\n", argc);
+		return CMD_RET_USAGE;
+	}
+	url = argv[1];
+
+	uboot_lwip_init();
+
+	eth_init(); /* activate u-boot eth dev */
+
+	lwip_wget(image_load_addr, url);
+
+	return ulwip_loop();
+}
+#endif
+
+#if defined(CONFIG_CMD_TFTPBOOT)
+extern int lwip_tftp(ulong addr, char *filename);
+
+int do_lwip_tftp(struct cmd_tbl *cmdtp, int flag, int argc,
+		 char *const argv[])
+{
+	char *filename;
+	ulong addr;
+	char *end;
+	int ret;
+
+	switch (argc) {
+	case 1:
+		filename = env_get("bootfile");
+		break;
+	case 2:
+		/*
+		 * Only one arg - accept two forms:
+		 * Just load address, or just boot file name. The latter
+		 * form must be written in a format which can not be
+		 * mis-interpreted as a valid number.
+		 */
+		addr = hextoul(argv[1], &end);
+		if (end == (argv[1] + strlen(argv[1]))) {
+			image_load_addr = addr;
+			filename = env_get("bootfile");
+		} else {
+			filename = argv[1];
+		}
+		break;
+	case 3:
+		image_load_addr = hextoul(argv[1], NULL);
+		filename = argv[2];
+		break;
+	default:
+		return CMD_RET_USAGE;
+	}
+
+	uboot_lwip_init();
+
+	eth_init(); /* activate u-boot eth dev */
+
+	ret = lwip_tftp(image_load_addr, filename);
+	if (ret)
+		return ret;
+
+	return ulwip_loop();
+}
+#endif /* CONFIG_CMD_TFTPBOOT */
+
+#if defined(CONFIG_CMD_DHCP)
+extern int ulwip_dhcp(void);
+
+int do_lwip_dhcp(void)
+{
+	int ret;
+	char *filename;
+
+	uboot_lwip_init();
+
+	ret = ulwip_dhcp();
+
+	net_set_timeout_handler(2000UL, ulwip_timeout_handler);
+
+	ulwip_loop();
+	if (IS_ENABLED(CONFIG_CMD_TFTPBOOT)) {
+		ulwip_clear_tmo();
+
+		filename = env_get("bootfile");
+		if (!filename) {
+			printf("no bootfile\n");
+			return CMD_RET_FAILURE;
+		}
+
+		eth_init(); /* activate u-boot eth dev */
+		net_set_timeout_handler(20000UL, ulwip_timeout_handler);
+		lwip_tftp(image_load_addr, filename);
+
+		ret =  ulwip_loop();
+	}
+
+	return ret;
+}
+
+static int _do_lwip_dhcp(struct cmd_tbl *cmdtp, int flag, int argc,
+		char *const argv[])
+{
+	return do_lwip_dhcp();
+}
+#endif /* CONFIG_CMD_DHCP */
+
+#if defined(CONFIG_CMD_DNS)
+int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc,
+		char *const argv[])
+{
+	int ret;
+	char *name;
+	char *varname;
+	int LWIP_ERR_INPROGRESS = -5;
+
+	if (argc == 1)
+		return CMD_RET_USAGE;
+
+	name = argv[1];
+
+	if (argc == 3)
+		varname = argv[2];
+	else
+		varname = NULL;
+
+	uboot_lwip_init();
+
+	ret = ulwip_dns(name, varname);
+	if (ret == 0)
+		return CMD_RET_SUCCESS;
+	if (ret != LWIP_ERR_INPROGRESS)
+		return CMD_RET_FAILURE;
+
+	net_set_timeout_handler(1000UL, ulwip_timeout_handler);
+
+	return ulwip_loop();
+}
+#endif /* CONFIG_CMD_DNS */
+
+static struct cmd_tbl cmds[] = {
+	U_BOOT_CMD_MKENT(info, 1, 0, do_lwip_info, "Info and stats", ""),
+	U_BOOT_CMD_MKENT(init, 1, 0, do_lwip_init,
+			 "initialize lwip stack", ""),
+#if defined(CONFIG_CMD_LWIP_PING)
+	U_BOOT_CMD_MKENT(ping, 2, 0, do_lwip_ping,
+			 "send ICMP ECHO_REQUEST to network host",
+			 "pingAddress"),
+#endif
+#if defined(CONFIG_CMD_WGET)
+	U_BOOT_CMD_MKENT(wget, 2, 0, do_lwip_wget, "", ""),
+#endif
+#if defined(CONFIG_CMD_TFTPBOOT)
+	U_BOOT_CMD_MKENT(tftp, 3, 0, do_lwip_tftp,
+			"boot image via network using TFTP protocol\n",
+			"[loadAddress] [[hostIPaddr:]bootfilename]"),
+#endif
+#if defined(CONFIG_CMD_DHCP)
+	U_BOOT_CMD_MKENT(dhcp, 1, 0, _do_lwip_dhcp,
+			"boot image via network using DHCP/TFTP protocol",
+			""),
+#endif
+#if defined(CONFIG_CMD_DNS)
+	U_BOOT_CMD_MKENT(dns, 3, 0, do_lwip_dns,
+			 "lookup dns name [and store address at variable]",
+			 ""),
+#endif
+};
+
+static int do_ops(struct cmd_tbl *cmdtp, int flag, int argc,
+		     char *const argv[])
+{
+	struct cmd_tbl *cp;
+
+	cp = find_cmd_tbl(argv[1], cmds, ARRAY_SIZE(cmds));
+
+	argc--;
+	argv++;
+
+	if (cp == NULL || argc > cp->maxargs)
+		return CMD_RET_USAGE;
+	if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp))
+		return CMD_RET_SUCCESS;
+
+	return cp->cmd(cmdtp, flag, argc, argv);
+}
+
+U_BOOT_CMD(
+	lwip, 4, 1, do_ops,
+	"LWIP sub system",
+	"info - display info\n"
+	"init - init LWIP\n"
+	"ping addr - pingAddress\n"
+	"wget http://IPadress/url/\n"
+	"tftp [loadAddress] [[hostIPaddr:]bootfilename]\n"
+	"dhcp - boot image via network using DHCP/TFTP protocol\n"
+	);
+
+/* Old command kept for compatibility. Same as 'mmc info' */
+U_BOOT_CMD(
+	lwipinfo, 1, 0, do_lwip_info,
+	"display LWIP info",
+	"- display LWIP stack info"
+);
-- 
2.30.2



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