isotp: add tool support for ISO 15765-2:2015 with CAN FD

[can-utils.git] / isotptun.c

diff --git a/isotptun.c b/isotptun.c
index 77ee1d3cd5395b960740840226f66820f244649f..1c2e66aa682f9ff0d76760a140e08c14a8101437 100644 (file)
--- a/isotptun.c
+++ b/isotptun.c
@@ -159,7 +159,7 @@ int main(int argc, char **argv)
                        else if (optarg[0] == 'c')
                                opts.flags |= CAN_ISOTP_CHK_PAD_DATA;
                        else if (optarg[0] == 'a')
-                               opts.flags |= (CAN_ISOTP_CHK_PAD_DATA | CAN_ISOTP_CHK_PAD_DATA);
+                               opts.flags |= (CAN_ISOTP_CHK_PAD_LEN | CAN_ISOTP_CHK_PAD_DATA);
                        else {
                                printf("unknown padding check option '%c'.\n", optarg[0]);
                                print_usage(basename(argv[0]));