[PATCH iproute2 1/2] devlink: Add usage help for eswitch subcommand

[Roi Dayan <roid@mellanox.com>]

Add missing usage help for devlink dev eswitch subcommand.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
---
 devlink/devlink.c      |    7 ++++++-
 man/man8/devlink-dev.8 |    2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index ccca0fb..673234f 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -963,6 +963,8 @@ static bool dl_dump_filter(struct dl *dl, struct nlattr **tb)
 static void cmd_dev_help(void)
 {
 	pr_err("Usage: devlink dev show [ DEV ]\n");
+	pr_err("       devlink dev eswitch set DEV [ mode { legacy | switchdev } ]\n");
+	pr_err("       devlink dev eswitch show DEV\n");
 }
 
 static bool cmp_arr_last_handle(struct dl *dl, const char *bus_name,
@@ -1259,7 +1261,10 @@ static int cmd_dev_eswitch_set(struct dl *dl)
 
 static int cmd_dev_eswitch(struct dl *dl)
 {
-	if (dl_argv_match(dl, "set")) {
+	if (dl_argv_match(dl, "help") || dl_no_arg(dl)) {
+		cmd_dev_help();
+		return 0;
+	} else if (dl_argv_match(dl, "set")) {
 		dl_arg_inc(dl);
 		return cmd_dev_eswitch_set(dl);
 	} else if (dl_argv_match(dl, "show")) {
diff --git a/man/man8/devlink-dev.8 b/man/man8/devlink-dev.8
index 9ce3193..931e334 100644
--- a/man/man8/devlink-dev.8
+++ b/man/man8/devlink-dev.8
@@ -54,7 +54,7 @@ BUS_NAME/BUS_ADDRESS
 
 .TP
 .BR mode " { " legacy " | " switchdev " } "
-set eswitch mode
+Set eswitch mode
 
 .I legacy
 - Legacy SRIOV
-- 
1.7.1