xfrm_alg_auth_len
return kmemdup(orig, xfrm_alg_auth_len(orig), GFP_KERNEL);
nla = nla_reserve(skb, XFRMA_ALG_AUTH_TRUNC, xfrm_alg_auth_len(auth));
l += nla_total_size(xfrm_alg_auth_len(x->aalg));
p = kmemdup(ualg, xfrm_alg_auth_len(ualg), GFP_KERNEL);
if (nla_len(rt) < (int)xfrm_alg_auth_len(algp)) {