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Date:	Fri,  5 Sep 2014 09:45:25 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, stephen@...workplumber.org, nikolay@...hat.com
Subject: [patch iproute2] bond_slave: add help and fail on unknown opt

Signed-off-by: Jiri Pirko <jiri@...nulli.us>
---
 ip/iplink_bond_slave.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/ip/iplink_bond_slave.c b/ip/iplink_bond_slave.c
index aacba14..3c26f08 100644
--- a/ip/iplink_bond_slave.c
+++ b/ip/iplink_bond_slave.c
@@ -17,6 +17,13 @@
 #include "utils.h"
 #include "ip_common.h"
 
+static void explain(void)
+{
+	fprintf(stderr,
+		"Usage: ... bond_slave [ queue_id QUEUE_ID ]\n"
+	);
+}
+
 static const char *slave_states[] = {
 	[BOND_STATE_ACTIVE] = "ACTIVE",
 	[BOND_STATE_BACKUP] = "BACKUP",
@@ -91,6 +98,14 @@ static int bond_slave_parse_opt(struct link_util *lu, int argc, char **argv,
 			if (get_u16(&queue_id, *argv, 0))
 				invarg("queue_id is invalid", *argv);
 			addattr16(n, 1024, IFLA_BOND_SLAVE_QUEUE_ID, queue_id);
+		} else if (matches(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "bond_slave: unknown option \"%s\"?\n",
+				*argv);
+			explain();
+			return -1;
 		}
 		argc--, argv++;
 	}
-- 
1.9.3

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