samples/bpf: fix SKB_MODE flag to be a 32-bit unsigned int
The kernel side of XDP_FLAGS_SKB_MODE is unsigned, and the rtnetlink
IFLA_XDP_FLAGS is defined as NLA_U32. Thus, userspace programs under
samples/bpf/ should use the correct type.
Fixes: 3993f2cb983b ("samples/bpf: Add support for SKB_MODE to xdp1 and xdp_tx_iptunnel")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index deb05e6..378850c 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -20,11 +20,11 @@
#include "libbpf.h"
static int ifindex;
-static int flags;
+static __u32 xdp_flags;
static void int_exit(int sig)
{
- set_link_xdp_fd(ifindex, -1, flags);
+ set_link_xdp_fd(ifindex, -1, xdp_flags);
exit(0);
}
@@ -75,7 +75,7 @@
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch (opt) {
case 'S':
- flags |= XDP_FLAGS_SKB_MODE;
+ xdp_flags |= XDP_FLAGS_SKB_MODE;
break;
default:
usage(basename(argv[0]));
@@ -103,7 +103,7 @@
signal(SIGINT, int_exit);
- if (set_link_xdp_fd(ifindex, prog_fd[0], flags) < 0) {
+ if (set_link_xdp_fd(ifindex, prog_fd[0], xdp_flags) < 0) {
printf("link set xdp fd failed\n");
return 1;
}