@@ -2,6 +2,8 @@
int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
+int do_lwip_ping(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[]);
/**
* ulwip_dns() - creates the DNS request to resolve a domain host name
@@ -56,3 +58,16 @@ int ulwip_tftp(ulong addr, const char *filename);
* Returns: 0 for success, !0 if error
*/
int ulwip_wget(ulong addr, char *url);
+
+/**
+ * ulwip_ping - create the ping request
+ *
+ * This function creates the ping for address provided in parameters.
+ * After this function you need to invoke the polling
+ * loop to process network communication.
+ *
+ *
+ * @ping_addr: IP address to ping
+ * Returns: 0 for success, !0 if error
+*/
+int ulwip_ping(char *ping_addr);
@@ -67,3 +67,4 @@ obj-y += apps/dhcp/lwip-dhcp.o
obj-y += apps/dns/lwip-dns.o
obj-y += apps/tftp/
obj-y += apps/http/
+obj-y += apps/ping/
new file mode 100644
@@ -0,0 +1,12 @@
+ccflags-y += -I$(srctree)/net/lwip/port/include
+ccflags-y += -I$(srctree)/net/lwip/lwip-external/src/include -I$(srctree)/net/lwip
+ccflags-y += -I$(obj)
+
+# ping.c includes "ping.h", copy it to local directory, to override ping.h
+.PHONY: $(obj)/ping.c
+$(obj)/ping.o: $(obj)/ping.c
+$(obj)/ping.c:
+ cp $(srctree)/net/lwip/lwip-external/contrib/apps/ping/ping.c $(obj)/ping.c
+
+obj-y += ping.o
+obj-y += lwip_ping.o
new file mode 100644
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * (C) Copyright 2023 Linaro Ltd. <maxim.uvarov@linaro.org>
+ */
+
+#include "lwip/opt.h"
+#include "lwip/ip_addr.h"
+#include "lwip/timeouts.h"
+#include <linux/errno.h>
+#include "ping.h"
+#include "lwip_ping.h"
+
+#define PING_WAIT_MS 1000
+
+static ip_addr_t ip_target;
+
+static void ping_tmo(void *arg)
+{
+ log_err("ping failed; host %s is not alive\n", (char *)arg);
+ ulwip_exit(1);
+}
+
+int ulwip_ping(char *ping_addr)
+{
+ int err;
+
+ err = ipaddr_aton(ping_addr, &ip_target);
+ if (!err)
+ return -ENOENT;
+
+ sys_timeout(PING_WAIT_MS, ping_tmo, ping_addr);
+
+ ping_init(&ip_target);
+ ping_send_now();
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+/*
+ * (C) Copyright 2023 Linaro Ltd. <maxim.uvarov@linaro.org>
+ */
+
+#ifndef LWIP_PING_H
+#define LWIP_PING_H
+
+#include <lwip/ip_addr.h>
+
+void ping_raw_init(void);
+void ping_send_now(void);
+
+#endif /* LWIP_PING_H */
new file mode 100644
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <net/ulwip.h>
+#include "lwip/ip_addr.h"
+
+#define LWIP_DEBUG 1 /* ping_time is under ifdef*/
+#define PING_RESULT(cond) { \
+ if (cond == 1) { \
+ printf("host %s a alive\n", ipaddr_ntoa(addr)); \
+ printf(" %"U32_F" ms\n", (sys_now() - ping_time)); \
+ ulwip_exit(0); \
+ } else { \
+ printf("ping failed; host %s in not alive\n",\
+ ipaddr_ntoa(addr)); \
+ ulwip_exit(-1); \
+ } \
+ } while (0);
+
+void ping_init(const ip_addr_t *ping_addr);
U-Boot recently got support for an alternative network stack using LWIP. Replace ping command with the LWIP variant while keeping the output and error messages identical. ping uses lwIP contrib/apps/ping/ping.c code. Custom timeout is used to get an error message on not modified example. lwIP timeouts are not yet implemented in U-Boot (#define LWIP_TIMERS 1) so that for now ping can not rechange itself for continuous pings and stops after the first request (the same behavior as the original ping.) Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org> --- include/net/lwip.h | 15 ++++++++++++++ net/lwip/Makefile | 1 + net/lwip/apps/ping/Makefile | 12 +++++++++++ net/lwip/apps/ping/lwip_ping.c | 38 ++++++++++++++++++++++++++++++++++ net/lwip/apps/ping/lwip_ping.h | 15 ++++++++++++++ net/lwip/apps/ping/ping.h | 19 +++++++++++++++++ 6 files changed, 100 insertions(+) create mode 100644 net/lwip/apps/ping/Makefile create mode 100644 net/lwip/apps/ping/lwip_ping.c create mode 100644 net/lwip/apps/ping/lwip_ping.h create mode 100644 net/lwip/apps/ping/ping.h