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

Maxim Uvarov
2023-08-02T14:11:33Z

Signed-off-by: Maxim Uvarov <maxim.uvarov@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@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