datalink_protocols/arp/arp.cpp

54 	// TODO: this should be a variable length header, but for our current
569 handle_arp_request(net_buffer *buffer, arp_header &header)
574 		arp_update_entry(header.protocol_sender,
581 	arp_entry *entry = arp_entry::Lookup(header.protocol_target);
594 	header.opcode = htons(ARP_OPCODE_REPLY);
596 	memcpy(header.hardware_target, header.hardware_sender, ETHER_ADDRESS_LENGTH);
597 	header.protocol_target = header.protocol_sender;
598 	memcpy(header.hardware_sender, LLADDR(&entry->hardware_address),
600 	header.protocol_sender = entry->protocol_address;
603 	memcpy(LLADDR((sockaddr_dl *)buffer->source), header.hardware_sender,
605 	memcpy(LLADDR((sockaddr_dl *)buffer->destination), header.hardware_target,
618 handle_arp_reply(net_buffer *buffer, arp_header &header)
624 	arp_update_entry(header.protocol_sender, (sockaddr_dl *)buffer->source, 0);
637 	arp_header &header = bufferHeader.Data();
638 	uint16 opcode = ntohs(header.opcode);
641 	dprintf("  hw sender: %s\n", mac_to_string(header.hardware_sender));
642 	dprintf("  proto sender: %s\n", inet_to_string(header.protocol_sender));
643 	dprintf("  hw target: %s\n", mac_to_string(header.hardware_target));;
644 	dprintf("  proto target: %s\n", inet_to_string(header.protocol_target));
647 	if (ntohs(header.protocol_type) != ETHER_TYPE_IP
648 		|| ntohs(header.hardware_type) != ARP_HARDWARE_TYPE_ETHER)
653 	if (header.hardware_length != ETHER_ADDRESS_LENGTH
654 		|| header.protocol_length != sizeof(in_addr_t))
662 			if (handle_arp_request(buffer, header) == B_OK) {
670 			handle_arp_reply(buffer, header);
794 	// prepare ARP header
797 	arp_header &header = bufferHeader.Data();
799 	header.hardware_type = htons(ARP_HARDWARE_TYPE_ETHER);
800 	header.protocol_type = htons(ETHER_TYPE_IP);
801 	header.hardware_length = ETHER_ADDRESS_LENGTH;
802 	header.protocol_length = sizeof(in_addr_t);
803 	header.opcode = htons(ARP_OPCODE_REQUEST);
805 	memcpy(header.hardware_sender, device->address.data, ETHER_ADDRESS_LENGTH);
806 	memset(header.hardware_target, 0, ETHER_ADDRESS_LENGTH);
807 	header.protocol_sender = protocol->local_address;
808 	header.protocol_target = address;