160 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
164 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
165 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
264 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
276 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
277 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
280 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
281 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
309 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
322 			if ((off = cp[IPOPT_OFFSET]) < 5) {  in ip_dooptions()
327 				cp[IPOPT_OFFSET + 1] += (1 << 4);  in ip_dooptions()
328 				if ((cp[IPOPT_OFFSET + 1] & 0xf0) == 0) {  in ip_dooptions()
329 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
336 			switch (cp[IPOPT_OFFSET + 1] & 0x0f) {  in ip_dooptions()
343 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
353 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
360 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
367 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
372 				code = &cp[IPOPT_OFFSET + 1] - (u_char *)ip;  in ip_dooptions()
377 			cp[IPOPT_OFFSET] += sizeof(uint32_t);  in ip_dooptions()
412 	opts->ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr);  in save_rte()
455 	opts->ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF;  in ip_srcroute()
678 			bcopy((caddr_t)&cp[IPOPT_OFFSET+1], mtod(m, caddr_t),  in ip_pcbopts()
684 			bcopy((&cp[IPOPT_OFFSET+1] + sizeof(struct in_addr)),  in ip_pcbopts()
685 			    &cp[IPOPT_OFFSET+1],  in ip_pcbopts()
746 			if (optlen != IPOPT_OFFSET + sizeof(uint16_t) ||  in ip_checkrouteralert()
747 			    (*((uint16_t *)&cp[IPOPT_OFFSET]) != 0))  in ip_checkrouteralert()