[PATCH 27/34] doc: add documentation for 'ping' command

[Robert Schwebel]

Signed-off-by: Robert Schwebel <r.schwebel at pengutronix.de>
---
 Documentation/commands.dox |    2 +-
 net/ping.c                 |   16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/Documentation/commands.dox b/Documentation/commands.dox
index 438d33e..9638728 100644
--- a/Documentation/commands.dox
+++ b/Documentation/commands.dox
@@ -80,7 +80,7 @@ available in @a Barebox:
 @li @subpage nand_boot_test
 @li @subpage nfs
 @li @subpage passwd
- at li @subpage ping
+ at li @subpage ping_command
 @li @subpage printenv_command
 @li @subpage protect_command
 @li @subpage pwd_command
diff --git a/net/ping.c b/net/ping.c
index d414784..c46a114 100644
--- a/net/ping.c
+++ b/net/ping.c
@@ -107,7 +107,23 @@ out:
 	return ping_state == PING_STATE_SUCCESS ? 0 : 1;
 }
 
+BAREBOX_CMD_HELP_START(ping)
+BAREBOX_CMD_HELP_USAGE("ping HOST\n")
+BAREBOX_CMD_HELP_SHORT("Send ICMP echo request to network host.\n")
+BAREBOX_CMD_HELP_END
+
+/**
+ * @page ping_command
+
+<p> HOST can be an IP address or a host name. If a host name is
+specified, barebox tries to resolve that host name and exits with a
+failure if not successful. If the host didn't answer for 10 seconds,
+ping exits with a failure. </p>
+
+ */
+
 BAREBOX_CMD_START(ping)
 	.cmd		= do_ping,
 	.usage		= "ping <destination>",
+	BAREBOX_CMD_HELP(cmd_ping_help)
 BAREBOX_CMD_END
-- 
1.7.2.3