[PATCH bpf-next] samples/bpf: Add missing option to xdp_sample_pkts usage

[Wang Hai]

xdp_sample_pkts usage() is missing the introduction of the
"-S" option, this patch adds it.

Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
---
 samples/bpf/xdp_sample_pkts_user.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/samples/bpf/xdp_sample_pkts_user.c b/samples/bpf/xdp_sample_pkts_user.c
index 706475e004cb..495e09897bd3 100644
--- a/samples/bpf/xdp_sample_pkts_user.c
+++ b/samples/bpf/xdp_sample_pkts_user.c
@@ -103,7 +103,8 @@ static void usage(const char *prog)
 	fprintf(stderr,
 		"%s: %s [OPTS] <ifname|ifindex>\n\n"
 		"OPTS:\n"
-		"    -F    force loading prog\n",
+		"    -F    force loading prog\n"
+		"    -S    use skb-mode\n",
 		__func__, prog);
 }
 
-- 
2.17.1