175 static struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur,  in ndisc_next_option()  argument
179 	if (!cur || !end || cur >= end)  in ndisc_next_option()
181 	type = cur->nd_opt_type;  in ndisc_next_option()
183 		cur = ((void *)cur) + (cur->nd_opt_len << 3);  in ndisc_next_option()
184 	} while (cur < end && cur->nd_opt_type != type);  in ndisc_next_option()
185 	return cur <= end && cur->nd_opt_type == type ? cur : NULL;  in ndisc_next_option()
194 static struct nd_opt_hdr *ndisc_next_useropt(struct nd_opt_hdr *cur,  in ndisc_next_useropt()  argument
197 	if (!cur || !end || cur >= end)  in ndisc_next_useropt()
200 		cur = ((void *)cur) + (cur->nd_opt_len << 3);  in ndisc_next_useropt()
201 	} while (cur < end && !ndisc_is_useropt(cur));  in ndisc_next_useropt()
202 	return cur <= end && ndisc_is_useropt(cur) ? cur : NULL;  in ndisc_next_useropt()