ifla_vf_spoofchk
nla_total_size(sizeof(struct ifla_vf_spoofchk)) +
struct ifla_vf_spoofchk vf_spoofchk;
[IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) },
struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]);