static inline int verify_replay(struct xfrm_usersa_info *p,
				struct nlattr **attrs)
{
	struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
	struct xfrm_replay_state_esn *rs;

	if (p->flags & XFRM_STATE_ESN) {
		if (!rt)
			return -EINVAL;

		rs = nla_data(rt);

		if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
			return -EINVAL;

		if (nla_len(rt) < xfrm_replay_state_esn_len(rs) &&
		    nla_len(rt) != sizeof(*rs))
			return -EINVAL;
	}

	if (!rt)
		return 0;

	if (p->id.proto != IPPROTO_ESP)
		return -EINVAL;

	if (p->replay_window != 0)
		return -EINVAL;

	return 0;
}
static inline int verify_replay(struct xfrm_usersa_info *p,
				struct nlattr **attrs)
{
	struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
	struct xfrm_replay_state_esn *rs;

	if (p->flags & XFRM_STATE_ESN) {
		if (!rt)
			return -EINVAL;

		rs = nla_data(rt);

		if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
			return -EINVAL;

		if (nla_len(rt) < xfrm_replay_state_esn_len(rs) &&
		    nla_len(rt) != sizeof(*rs))
			return -EINVAL;
	}

	if (!rt)
		return 0;

	if (p->id.proto != IPPROTO_ESP)
		return -EINVAL;

	if (p->replay_window != 0)
		return -EINVAL;

	return 0;
}