diff options
Diffstat (limited to 'samples/bpf/xdp_adjust_tail_user.c')
| -rw-r--r-- | samples/bpf/xdp_adjust_tail_user.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/samples/bpf/xdp_adjust_tail_user.c b/samples/bpf/xdp_adjust_tail_user.c index 07e1b9269e49..a3596b617c4c 100644 --- a/samples/bpf/xdp_adjust_tail_user.c +++ b/samples/bpf/xdp_adjust_tail_user.c @@ -13,13 +13,14 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <net/if.h> #include <sys/resource.h> #include <arpa/inet.h> #include <netinet/ether.h> #include <unistd.h> #include <time.h> -#include "bpf/bpf.h" -#include "bpf/libbpf.h" +#include "bpf.h" +#include "libbpf.h" #define STATS_INTERVAL_S 2U @@ -69,7 +70,7 @@ static void usage(const char *cmd) printf("Start a XDP prog which send ICMP \"packet too big\" \n" "messages if ingress packet is bigger then MAX_SIZE bytes\n"); printf("Usage: %s [...]\n", cmd); - printf(" -i <ifindex> Interface Index\n"); + printf(" -i <ifname|ifindex> Interface\n"); printf(" -T <stop-after-X-seconds> Default: 0 (forever)\n"); printf(" -S use skb-mode\n"); printf(" -N enforce native mode\n"); @@ -102,7 +103,9 @@ int main(int argc, char **argv) switch (opt) { case 'i': - ifindex = atoi(optarg); + ifindex = if_nametoindex(optarg); + if (!ifindex) + ifindex = atoi(optarg); break; case 'T': kill_after_s = atoi(optarg); @@ -136,6 +139,11 @@ int main(int argc, char **argv) return 1; } + if (!ifindex) { + fprintf(stderr, "Invalid ifname\n"); + return 1; + } + snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); prog_load_attr.file = filename; |