samples: bpf: get ifindex from ifname (dc378a1a) · Commits · 戴 / test

samples/bpf/xdp1_user.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <unistd.h>
		#include <libgen.h>
		#include <sys/resource.h>
		#include <net/if.h>

		#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;