163 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
167 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
168 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
267 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
279 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
280 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
283 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
284 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
312 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
325 			if ((off = cp[IPOPT_OFFSET]) < 5) {  in ip_dooptions()
330 				cp[IPOPT_OFFSET + 1] += (1 << 4);  in ip_dooptions()
331 				if ((cp[IPOPT_OFFSET + 1] & 0xf0) == 0) {  in ip_dooptions()
332 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
339 			switch (cp[IPOPT_OFFSET + 1] & 0x0f) {  in ip_dooptions()
346 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
356 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
363 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
370 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
375 				code = &cp[IPOPT_OFFSET + 1] - (u_char *)ip;  in ip_dooptions()
380 			cp[IPOPT_OFFSET] += sizeof(uint32_t);  in ip_dooptions()
415 	opts->ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr);  in save_rte()
458 	opts->ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF;  in ip_srcroute()
679 			bcopy((caddr_t)&cp[IPOPT_OFFSET+1], mtod(m, caddr_t),  in ip_pcbopts()
685 			bcopy((&cp[IPOPT_OFFSET+1] + sizeof(struct in_addr)),  in ip_pcbopts()
686 			    &cp[IPOPT_OFFSET+1],  in ip_pcbopts()
747 			if (optlen != IPOPT_OFFSET + sizeof(uint16_t) ||  in ip_checkrouteralert()
748 			    (*((uint16_t *)&cp[IPOPT_OFFSET]) != 0))  in ip_checkrouteralert()