FOU_ATTR_IFINDEX
if (info->attrs[FOU_ATTR_IFINDEX]) {
ifindex = nla_get_s32(info->attrs[FOU_ATTR_IFINDEX]);
nla_put_s32(msg, FOU_ATTR_IFINDEX, sk->sk_bound_dev_if))
const struct nla_policy fou_nl_policy[FOU_ATTR_IFINDEX + 1] = {
[FOU_ATTR_IFINDEX] = { .type = NLA_S32, },
extern const struct nla_policy fou_nl_policy[FOU_ATTR_IFINDEX + 1];