169   struct iphdr iph;  member
659   if (bytes < (int) (sizeof(packet.iph) + sizeof(packet.udph))) {  in read_raw()
663   if (bytes < ntohs(packet.iph.tot_len)) {  in read_raw()
668   bytes = ntohs(packet.iph.tot_len);  in read_raw()
670   if (packet.iph.protocol != IPPROTO_UDP || packet.iph.version != IPVERSION  in read_raw()
671    || packet.iph.ihl != (sizeof(packet.iph) >> 2)  in read_raw()
673    || ntohs(packet.udph.len) != (uint16_t)(bytes - sizeof(packet.iph))) {  in read_raw()
678   check = packet.iph.check;  in read_raw()
679   packet.iph.check = 0;  in read_raw()
680   if (check != dhcp_checksum(&packet.iph, sizeof(packet.iph))) {  in read_raw()
684   memset(&packet.iph, 0, ((size_t) &((struct iphdr *)0)->protocol));  in read_raw()
685   packet.iph.tot_len = packet.udph.len;  in read_raw()
692   memcpy(&state->pdhcp, &packet.dhcp, bytes - (sizeof(packet.iph) + sizeof(packet.udph)));  in read_raw()
697   return bytes - sizeof(packet.iph) - sizeof(packet.udph);  in read_raw()
744   packet.iph.protocol = IPPROTO_UDP;  in send_raw()
745   packet.iph.saddr = INADDR_ANY;  in send_raw()
746   packet.iph.daddr = INADDR_BROADCAST;  in send_raw()
750   packet.iph.tot_len = packet.udph.len;  in send_raw()
752   packet.iph.tot_len = htons(sizeof(dhcp_raw_t) - padding);  in send_raw()
753   packet.iph.ihl = sizeof(packet.iph) >> 2;  in send_raw()
754   packet.iph.version = IPVERSION;  in send_raw()
755   packet.iph.ttl = IPDEFTTL;  in send_raw()
756   packet.iph.check = dhcp_checksum(&packet.iph, sizeof(packet.iph));  in send_raw()