# Data Structures

Here are the data structures with brief descriptions:

__CPU_Private_Data | Kernel buffer of each CPU
_DEVICE_EXTENSION | Port device extension
_INTERNAL_REQUEST | Stores an OID request
_OPEN_INSTANCE | Contains the state of a running instance of the NPF driver
_PACKET_OID_DATA | Structure containing an OID request
_PACKET_RESERVED | Contains a NDIS packet
active_pars |
activehosts | Keeps a list of all the opened connections in the active mode
binary_stream | A stream of X86 binary code
daemon_slpars | Structure that keeps the parameters needed by the daemon_serviceloop() function
JIT_BPF_Filter | Structure describing a x86 filtering program created by the jitter
packet_file_header | Header of a libpcap dump file
PacketHeader | Structure prepended to each packet in the kernel buffer pool
pcap_addr | Representation of an interface address, used by pcap_findalldevs()
pcap_file_header | Header of a libpcap dump file
pcap_if | Item in a list of interfaces, used by pcap_findalldevs()
pcap_pkthdr | Header of a packet in the dump file
pcap_rmtauth | This structure keeps the information needed to autheticate the user on a remote machine
pcap_samp | This structure defines the information related to sampling
pcap_send_queue | A queue of raw packets that will be sent to the network with pcap_sendqueue_transmit()
pcap_stat | Structure that keeps statistical values on an interface
rpcap_auth | Structure that keeps the data required for the authentication on the remote host
rpcap_filter | General header used for the pcap_setfilter() command; keeps just the number of BPF instructions
rpcap_filterbpf_insn | Structure that keeps a single BPF instuction; it is repeated 'ninsn' times according to the 'rpcap_filterbpf' header
rpcap_findalldevs_if | Format of the message for the interface description (findalldevs command)
rpcap_findalldevs_ifaddr | Format of the message for the address listing (findalldevs command)
rpcap_header | Common header for all the RPCAP messages
rpcap_openreply | Format of the message of the connection opening reply (open command)
rpcap_pkthdr | Format of the header which encapsulates captured packets when transmitted on the network
rpcap_sampling | Structure that is needed to set sampling parameters
rpcap_startcapreply | Format of the reply message that devoted to start a remote capture (startcap reply command)
rpcap_startcapreq | Format of the message that starts a remote capture (startcap command)
rpcap_stats | Structure that keeps the statistics about the number of packets captured, dropped, etc
sf_pkthdr | Header associated to a packet in the driver's buffer when the driver is in dump mode. Similar to the bpf_hdr structure, but simpler

documentation. Copyright (c) 2002-2005 Politecnico di Torino. Copyright (c) 2005-2009 CACE Technologies. All rights reserved.