if (sptr_database_packet_header->options._bit.opaque != sptr_neighbor->options._bit.opaque)		{	    /*opaque lsa ignore unrecognized option bits in DD packet jkw*/		/*If routers encounter unrecognized Option bits ignore the capability		and process the packet/advertisement normally.*/		if ((sptr_database_packet_header->options._bit.opaque == TRUE)			&& (ospf.opaque_capability == TRUE))			{			sptr_neighbor->opaque_capability = TRUE;			}		}	if (sptr_database_packet_header->options._bit.opaque == sptr_neighbor->options._bit.opaque)		{		if ((sptr_database_packet_header->options._bit.opaque == TRUE)			&& (ospf.opaque_capability == TRUE))			{			sptr_neighbor->opaque_capability = TRUE;			}		}#endif /* __OPAQUE_LSA__ */	return 0;}/******************************************************************************************************************************/static void ospf_remove_last_sent_database_summary (OSPF_NEIGHBOR *sptr_neighbor){	OSPF_LS_DATABASE_SUMMARY	*sptr_next_database_summary;	OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Entering ospf_remove_last_sent_database_summary\r\n");	sptr_neighbor->database_summary_queue_count = (USHORT) (sptr_neighbor->database_summary_queue_count -		sptr_neighbor->sptr_database_summary->number_of_database_entries);	sptr_next_database_summary = sptr_neighbor->sptr_database_summary->sptr_forward_link;	ospf_free_ls_database_summary (sptr_neighbor->sptr_database_summary);	sptr_neighbor->sptr_database_summary = sptr_next_database_summary;}/****************************************************************************************************************************** * accept as next in sequence and process packet further as follows: *     (1) call ospf_parse_database_packet () here if the size_of_packet > 0 *     (2) (a) if we're the slave, set the sequence number to the sequence number appearing in the received packet *         (b) if we're the master, increment the sequence number * ******************************************************************************************************************************/static enum OSPF_PACKET_STATE ospf_accept_as_next_in_sequence (OSPF_DATABASE_HEADER *sptr_database_packet_header,ULONG size_of_packet,	OSPF_NEIGHBOR *sptr_neighbor,OSPF_INTERFACE *sptr_interface){	enum OSPF_PACKET_STATE return_type;	seq_t database_description_sequence_number;	OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Entering ospf_accept_as_next_in_sequence\r\n");	database_description_sequence_number = sptr_database_packet_header->sequence;	database_description_sequence_number = net_to_host_long (database_description_sequence_number);	if (size_of_packet > 0x00000000L)		{		return_type = ospf_parse_database_packet (sptr_database_packet_header, sptr_neighbor, sptr_interface, size_of_packet);		if (return_type == STOP_PROCESSING_PACKET)			{			return (STOP_PROCESSING_PACKET);			}		}	if (sptr_neighbor->mode == OSPF_SLAVE)		{		sptr_neighbor->database_description_sequence_number = database_description_sequence_number;		}	else		{		++sptr_neighbor->database_description_sequence_number;		}	return (GOOD_RECEIVE);}/****************************************************************************//* section 10.6 of OSPF specification (page 92) */static enum OSPF_PACKET_STATE ospf_parse_database_packet (OSPF_DATABASE_HEADER *sptr_database_header,OSPF_NEIGHBOR *sptr_neighbor,	OSPF_INTERFACE *sptr_interface,ULONG size_of_packet){	OSPF_LS_HEADER *sptr_database_packet;	OSPF_LS_DATABASE_ENTRY *sptr_advertisement;	OSPF_AREA_ENTRY *sptr_area;	OSPF_LS_REQUEST *sptr_ls_request;	ULONG elapsed_time;	enum TEST test_return_type;	char print_buffer[PRINT_BUFFER_SIZE];	char print_buffer_1[PRINT_BUFFER_SIZE];	ULONG current_time;	ULONG id;	seq_t database_description_sequence_number;	ULONG advertising_router;	OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Entering ospf_parse_database_packet\r\n");	sptr_database_packet = &sptr_database_header->link_state_advertisement_header;	for (; size_of_packet > 0x00000000L; size_of_packet -= OSPF_DB_PIECE_SIZE)		{		/* If we don't have a copy or if neighbors info is newer */		test_return_type = ospf_check_for_valid_ls_type (sptr_interface, sptr_database_packet, OSPF_DATABASE_DESCRIPTION_PACKET);		if (test_return_type == FAIL)			{			OSPF_CONVERT_IP_ADDRESS_TO_DOT_FORMAT_FOR_ALARM (print_buffer, sptr_neighbor->id);			OSPF_CONVERT_IP_ADDRESS_TO_DOT_FORMAT_FOR_ALARM (print_buffer_1, sptr_neighbor->address);			database_description_sequence_number = sptr_database_header->sequence;			database_description_sequence_number = net_to_host_long (database_description_sequence_number);			if (sptr_neighbor->mode == OSPF_MASTER)				{				OSPF_PRINTF_ALARM (OSPF_ALARM_PRINTF, "OSPF: 4 Lost Master Neighbor %s with address %s due to sequence number mismatch (%d vs %d)\r\n",					print_buffer, print_buffer_1, sptr_neighbor->database_description_sequence_number, database_description_sequence_number);				}			else				{				OSPF_PRINTF_ALARM (OSPF_ALARM_PRINTF, "OSPF: 4 Lost Slave Neighbor %s with address %s due to sequence number mismatch (%d vs %d)\r\n",					print_buffer, print_buffer_1, sptr_neighbor->database_description_sequence_number, database_description_sequence_number);				}			ospf_execute_neighbor_state_machine (OSPF_SEQUENCE_NUMBER_MISMATCH, sptr_neighbor->state, sptr_interface, sptr_neighbor);			return (STOP_PROCESSING_PACKET);			}		sptr_area = sptr_interface->sptr_area;		id = sptr_database_packet->id;		id = net_to_host_long (id);		advertising_router = sptr_database_packet->advertising_router;		advertising_router = net_to_host_long (advertising_router);		/* SPR#76812 */		sptr_advertisement = ospf_find_LSA (sptr_area, id, advertising_router, sptr_database_packet->type);		/* SPR 84312 -- Begin */		current_time = ospf_get_system_elapsed_time_second ();		/* SPR 84312 -- End */		if (sptr_advertisement != NULL)			{			elapsed_time = current_time - sptr_advertisement->ls_database_time_stamp;			}		else			{			elapsed_time = 0x00000000L;			}		if ((sptr_advertisement == NULL) ||			ospf_check_if_more_recent (sptr_database_packet, &sptr_advertisement->advertisement.sptr_router->ls_header, elapsed_time))			{			/* add piece to list since piece is newer or we don't have it */			sptr_ls_request = (OSPF_LS_REQUEST *) table_malloc (1, sizeof (OSPF_LS_REQUEST));			if (sptr_ls_request == NULL)				{				ospf_print_memory_error_message_and_free_buffer_if_necessary ((void *) NULL, "OSPF_LS_REQUEST");				continue;				}			memset (sptr_ls_request, 0x00, sizeof (OSPF_LS_REQUEST));			sptr_ls_request->id = sptr_database_packet->id;			sptr_ls_request->advertising_router = sptr_database_packet->advertising_router;			sptr_ls_request->sequence_number = sptr_database_packet->sequence_number;			sptr_ls_request->checksum = sptr_database_packet->checksum;			sptr_ls_request->age = sptr_database_packet->age;			if (sptr_neighbor->sptr_ls_request[sptr_database_packet->type] == NULL)				{				sptr_neighbor->sptr_ls_request[sptr_database_packet->type] = sptr_ls_request;				sptr_neighbor->sptr_ls_request[sptr_database_packet->type]->sptr_forward_link = NULL;				sptr_neighbor->sptr_ls_request[sptr_database_packet->type]->sptr_backward_link = NULL;				}			else				{				ospf_add_node_to_end_of_list ((OSPF_GENERIC_NODE *) sptr_ls_request,					(OSPF_GENERIC_NODE *) sptr_neighbor->sptr_ls_request[sptr_database_packet->type]);				}			++sptr_neighbor->ls_request_queue_count;			sptr_neighbor->ls_request_list_has_changed = TRUE;			}		++sptr_database_packet;		}	return (GOOD_RECEIVE);}/*********************************************************************************************/static void ospf_neighbor_full_process_database_packet     (    OSPF_DATABASE_HEADER *sptr_database_packet_header,    OSPF_NEIGHBOR *sptr_neighbor,	OSPF_INTERFACE *sptr_interface    )    {	char print_buffer[PRINT_BUFFER_SIZE];	char print_buffer_1[PRINT_BUFFER_SIZE];	seq_t database_description_sequence_number;	OSPF_PRINTF_DEBUG (OSPF_DEBUG_PRINTF, "OSPF: Entering ospf_neighbor_full_process_database_packet\r\n");	database_description_sequence_number = sptr_database_packet_header->sequence;	database_description_sequence_number = net_to_host_long (database_description_sequence_number);    if (((sptr_neighbor->mode == OSPF_SLAVE_HOLD) || (sptr_neighbor->mode == OSPF_SLAVE)) &&        (sptr_neighbor->database_description_sequence_number == database_description_sequence_number) &&        /* SPR#75769 - begin */        ((ospf_get_system_elapsed_time_second () - sptr_neighbor->last_exchange) < sptr_interface->router_dead_interval))        /* SPR#75769 - end */		{        ospf_send_database_summary (sptr_interface, sptr_neighbor);		}    else if ((sptr_neighbor->mode == OSPF_MASTER) &&              (sptr_neighbor->database_description_sequence_number - database_description_sequence_number == 0x00000001L))        {        return;         }    else		{		if (sptr_neighbor->state == OSPF_NEIGHBOR_FULL)			{			OSPF_CONVERT_IP_ADDRESS_TO_DOT_FORMAT_FOR_ALARM (print_buffer, sptr_neighbor->id);			OSPF_CONVERT_IP_ADDRESS_TO_DOT_FORMAT_FOR_ALARM (print_buffer_1, sptr_neighbor->address);			if (sptr_neighbor->mode == OSPF_MASTER)				{				OSPF_PRINTF_ALARM (OSPF_ALARM_PRINTF, "OSPF: 5 Lost Master Neighbor %s with address %s due to sequence number mismatch (%d vs %d)\r\n",					print_buffer, print_buffer_1, sptr_neighbor->database_description_sequence_number, database_description_sequence_number);				}			else				{				OSPF_PRINTF_ALARM (OSPF_ALARM_PRINTF, "OSPF: 5 Lost Slave Neighbor %s with address %s due to sequence number mismatch (%d vs %d)\r\n",					print_buffer, print_buffer_1, sptr_neighbor->database_description_sequence_number, database_description_sequence_number);				}			}		ospf_execute_neighbor_state_machine (OSPF_SEQUENCE_NUMBER_MISMATCH, sptr_neighbor->state, sptr_interface, sptr_neighbor);		}	return;    }