161 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
165 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
166 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
265 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
277 			if (optlen < IPOPT_OFFSET + sizeof(*cp)) {  in ip_dooptions()
278 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
281 			if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) {  in ip_dooptions()
282 				code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
310 			cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
323 			if ((off = cp[IPOPT_OFFSET]) < 5) {  in ip_dooptions()
328 				cp[IPOPT_OFFSET + 1] += (1 << 4);  in ip_dooptions()
329 				if ((cp[IPOPT_OFFSET + 1] & 0xf0) == 0) {  in ip_dooptions()
330 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
337 			switch (cp[IPOPT_OFFSET + 1] & 0x0f) {  in ip_dooptions()
344 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
354 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
361 					code = &cp[IPOPT_OFFSET] - (u_char *)ip;  in ip_dooptions()
368 				cp[IPOPT_OFFSET] += sizeof(struct in_addr);  in ip_dooptions()
373 				code = &cp[IPOPT_OFFSET + 1] - (u_char *)ip;  in ip_dooptions()
378 			cp[IPOPT_OFFSET] += sizeof(uint32_t);  in ip_dooptions()
413 	opts->ip_nhops = (olen - IPOPT_OFFSET - 1) / sizeof(struct in_addr);  in save_rte()
456 	opts->ip_srcrt.srcopt[IPOPT_OFFSET] = IPOPT_MINOFF;  in ip_srcroute()
677 			bcopy((caddr_t)&cp[IPOPT_OFFSET+1], mtod(m, caddr_t),  in ip_pcbopts()
683 			bcopy((&cp[IPOPT_OFFSET+1] + sizeof(struct in_addr)),  in ip_pcbopts()
684 			    &cp[IPOPT_OFFSET+1],  in ip_pcbopts()
745 			if (optlen != IPOPT_OFFSET + sizeof(uint16_t) ||  in ip_checkrouteralert()
746 			    (*((uint16_t *)&cp[IPOPT_OFFSET]) != 0))  in ip_checkrouteralert()