From dc378a1ab5b6009629a3f8410f8b3030ac6b14c9 Mon Sep 17 00:00:00 2001 From: Matteo Croce Date: Sat, 1 Dec 2018 01:23:06 +0100 Subject: [PATCH] samples: bpf: get ifindex from ifname Find the ifindex with if_nametoindex() instead of requiring the numeric ifindex. Signed-off-by: Matteo Croce Signed-off-by: Alexei Starovoitov --- samples/bpf/xdp1_user.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c index 4f3d824fc044..0a197f86ac43 100644 --- a/samples/bpf/xdp1_user.c +++ b/samples/bpf/xdp1_user.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "bpf_util.h" #include "bpf/bpf.h" @@ -59,7 +60,7 @@ static void poll_stats(int map_fd, int interval) static void usage(const char *prog) { fprintf(stderr, - "usage: %s [OPTS] IFINDEX\n\n" + "usage: %s [OPTS] IFACE\n\n" "OPTS:\n" " -S use skb-mode\n" " -N enforce native mode\n", @@ -102,7 +103,11 @@ int main(int argc, char **argv) return 1; } - ifindex = strtoul(argv[optind], NULL, 0); + ifindex = if_nametoindex(argv[1]); + if (!ifindex) { + perror("if_nametoindex"); + return 1; + } snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); prog_load_attr.file = filename; -- 2.30.2