[PATCHv5 07/13] net/lwip: implement ping cmd

[Maxim Uvarov]

Signed-off-by: Maxim Uvarov <maxim.uvarov at linaro.org>
---
 lib/lwip/Makefile              |  1 +
 lib/lwip/apps/ping/Makefile    | 11 ++++++++++
 lib/lwip/apps/ping/lwip_ping.c | 37 ++++++++++++++++++++++++++++++++++
 lib/lwip/apps/ping/lwip_ping.h | 24 ++++++++++++++++++++++
 lib/lwip/apps/ping/ping.h      | 35 ++++++++++++++++++++++++++++++++
 5 files changed, 108 insertions(+)
 create mode 100644 lib/lwip/apps/ping/Makefile
 create mode 100644 lib/lwip/apps/ping/lwip_ping.c
 create mode 100644 lib/lwip/apps/ping/lwip_ping.h
 create mode 100644 lib/lwip/apps/ping/ping.h

diff --git a/lib/lwip/Makefile b/lib/lwip/Makefile
index ec6b728c8e..87ed99a230 100644
--- a/lib/lwip/Makefile
+++ b/lib/lwip/Makefile
@@ -67,5 +67,6 @@ obj-$(CONFIG_NET) += port/sys-arch.o
 
 obj-$(CONFIG_CMD_DHCP) += apps/dhcp/lwip-dhcp.o
 obj-$(CONFIG_CMD_DNS) += apps/dns/lwip-dns.o
+obj-$(CONFIG_CMD_PING) += apps/ping/
 obj-$(CONFIG_CMD_TFTPBOOT) += apps/tftp/
 obj-$(CONFIG_CMD_WGET) += apps/http/
diff --git a/lib/lwip/apps/ping/Makefile b/lib/lwip/apps/ping/Makefile
new file mode 100644
index 0000000000..0d0a811336
--- /dev/null
+++ b/lib/lwip/apps/ping/Makefile
@@ -0,0 +1,11 @@
+ccflags-y += -I$(srctree)/lib/lwip/port/include
+ccflags-y += -I$(srctree)/lib/lwip/lwip-external/src/include -I$(srctree)/lib/lwip
+ccflags-y += -I$(obj)
+
+.PHONY: $(obj)/ping.c
+$(obj)/ping.o: $(obj)/ping.c
+$(obj)/ping.c:
+	cp $(srctree)/lib/lwip/lwip-external/contrib/apps/ping/ping.c $(obj)/ping.c
+
+obj-$(CONFIG_CMD_PING) += ping.o
+obj-$(CONFIG_CMD_PING) += lwip_ping.o
diff --git a/lib/lwip/apps/ping/lwip_ping.c b/lib/lwip/apps/ping/lwip_ping.c
new file mode 100644
index 0000000000..40658ab6fd
--- /dev/null
+++ b/lib/lwip/apps/ping/lwip_ping.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * (C) Copyright 2023 Linaro Ltd. <maxim.uvarov at linaro.org>
+ */
+
+#include "lwip/opt.h"
+#include "lwip/ip_addr.h"
+#include "ping.h"
+
+#include <ulwip.h>
+
+static ip_addr_t ip_target;
+
+static int ulwip_ping_tmo(void)
+{
+
+	printf("ping failed; host %s is not alive\n", ipaddr_ntoa(&ip_target));
+	return 0;
+}
+
+int lwip_ping_init(char *ping_addr)
+{
+	int err;
+
+	err = ipaddr_aton(ping_addr, &ip_target);
+	if (err == 0) {
+		printf("wrong ping addr string \"%s\" \n", ping_addr);
+		return -1;
+	}
+
+	ulwip_set_tmo(ulwip_ping_tmo);
+
+	ping_init(&ip_target);
+
+	return 0;
+}
diff --git a/lib/lwip/apps/ping/lwip_ping.h b/lib/lwip/apps/ping/lwip_ping.h
new file mode 100644
index 0000000000..7f08095427
--- /dev/null
+++ b/lib/lwip/apps/ping/lwip_ping.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+/*
+ * (C) Copyright 2023 Linaro Ltd. <maxim.uvarov at linaro.org>
+ */
+
+#ifndef LWIP_PING_H
+#define LWIP_PING_H
+
+#include <lwip/ip_addr.h>
+
+/**
+ * PING_USE_SOCKETS: Set to 1 to use sockets, otherwise the raw api is used
+ */
+#ifndef PING_USE_SOCKETS
+#define PING_USE_SOCKETS   0
+#endif
+
+int lwip_ping_init(char *ping_addr);
+
+void ping_raw_init(void);
+void ping_send_now(void);
+
+#endif /* LWIP_PING_H */
diff --git a/lib/lwip/apps/ping/ping.h b/lib/lwip/apps/ping/ping.h
new file mode 100644
index 0000000000..0dd4bd78c7
--- /dev/null
+++ b/lib/lwip/apps/ping/ping.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include "../../../lwip/ulwip.h"
+
+#include "lwip/prot/ip4.h"
+
+#define ip4_print_parts(a, b, c, d) \
+	printf("%" U16_F ".%" U16_F ".%" U16_F ".%" U16_F, a, b, c, d);
+
+#define ip4_print(ipaddr) \
+	ip4_print_parts(\
+			(u16_t)((ipaddr) != NULL ? ip4_addr1_16(ipaddr) : 0), \
+			(u16_t)((ipaddr) != NULL ? ip4_addr2_16(ipaddr) : 0), \
+			(u16_t)((ipaddr) != NULL ? ip4_addr3_16(ipaddr) : 0), \
+			(u16_t)((ipaddr) != NULL ? ip4_addr4_16(ipaddr) : 0))
+
+
+#define LWIP_DEBUG 1 /* ping_time is under ifdef*/
+#define PING_RESULT(cond) { \
+	if (cond == 1) { \
+		printf("host "); \
+		ip4_print(addr); \
+		printf(" is alive\n"); \
+		printf(" %"U32_F" ms\n", (sys_now() - ping_time)); \
+		ulwip_exit(0); \
+	} else { \
+		printf("ping failed; host "); \
+		ip4_print(addr); \
+		printf(" is not alive\n"); \
+		ulwip_exit(-1); \
+	} \
+     } while (0);
+
+#include "lwip/ip_addr.h"
+void ping_init(const ip_addr_t *ping_addr);
-- 
2.30.2