From: Ioana Ciornei <ioana.ciornei@nxp.com>
Date: Wed, 9 Jan 2019 17:06:55 +0000 (+0000)
Subject: samples: bpf: user proper argument index
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=11b36abc249f5e100d532c5271dae938fde85175;p=linux.git

samples: bpf: user proper argument index

Use optind as index for argv instead of a hardcoded value.
When the program has options this leads to improper parameter handling.

Fixes: dc378a1ab5b6 ("samples: bpf: get ifindex from ifname")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---

diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index 0a197f86ac43a..8bfda95c77ad7 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -103,7 +103,7 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	ifindex = if_nametoindex(argv[1]);
+	ifindex = if_nametoindex(argv[optind]);
 	if (!ifindex) {
 		perror("if_nametoindex");
 		return 1;