diff options
Diffstat (limited to 'samples/bpf/xdp_redirect_user.c')
| -rw-r--r-- | samples/bpf/xdp_redirect_user.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c index e9054c0269ff..39de06f3ec25 100644 --- a/samples/bpf/xdp_redirect_user.c +++ b/samples/bpf/xdp_redirect_user.c @@ -1,13 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* Copyright (c) 2016 John Fastabend <john.r.fastabend@intel.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #include <linux/bpf.h> #include <linux/if_link.h> @@ -18,13 +10,14 @@ #include <stdlib.h> #include <stdbool.h> #include <string.h> +#include <net/if.h> #include <unistd.h> #include <libgen.h> #include <sys/resource.h> #include "bpf_util.h" #include <bpf/bpf.h> -#include "bpf/libbpf.h" +#include "libbpf.h" static int ifindex_in; static int ifindex_out; @@ -93,7 +86,7 @@ static void poll_stats(int interval, int ifindex) static void usage(const char *prog) { fprintf(stderr, - "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n" + "usage: %s [OPTS] <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n\n" "OPTS:\n" " -S use skb-mode\n" " -N enforce native mode\n" @@ -136,7 +129,7 @@ int main(int argc, char **argv) } if (optind == argc) { - printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]); + printf("usage: %s <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n", argv[0]); return 1; } @@ -145,8 +138,14 @@ int main(int argc, char **argv) return 1; } - ifindex_in = strtoul(argv[optind], NULL, 0); - ifindex_out = strtoul(argv[optind + 1], NULL, 0); + ifindex_in = if_nametoindex(argv[optind]); + if (!ifindex_in) + ifindex_in = strtoul(argv[optind], NULL, 0); + + ifindex_out = if_nametoindex(argv[optind + 1]); + if (!ifindex_out) + ifindex_out = strtoul(argv[optind + 1], NULL, 0); + printf("input: %d output: %d\n", ifindex_in, ifindex_out); snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); |