packet_entry_header Struct Reference

Per-packet record header in a Network Instruments Observer capture file. More...

#include <observer.h>

Public Attributes
uint32_t	packet_magic
uint32_t	network_speed
uint16_t	captured_size
uint16_t	network_size
uint16_t	offset_to_frame
uint16_t	offset_to_next_packet
uint8_t	network_type
uint8_t	flags
uint8_t	number_of_information_elements
uint8_t	packet_type
uint16_t	errors
uint16_t	reserved
uint64_t	packet_number
uint64_t	original_packet_number
uint64_t	nano_seconds_since_2000

Detailed Description

Per-packet record header in a Network Instruments Observer capture file.

Member Data Documentation

captured_size

uint16_t packet_entry_header::captured_size

Number of bytes of the packet actually saved in the file.

errors

uint16_t packet_entry_header::errors

Bitmask of error flags reported for this packet by the capture hardware.

flags

uint8_t packet_entry_header::flags

Bitmask of packet flags describing capture conditions for this packet.

nano_seconds_since_2000

uint64_t packet_entry_header::nano_seconds_since_2000

Packet arrival timestamp in nanoseconds since January 1, 2000 00:00:00 UTC.

network_size

uint16_t packet_entry_header::network_size

Original on-wire size of the packet in bytes.

network_speed

uint32_t packet_entry_header::network_speed

Speed of the network in bits per second at the time of capture.

network_type

uint8_t packet_entry_header::network_type

Network type identifier indicating the link-layer medium (e.g. Ethernet, WLAN).

number_of_information_elements

uint8_t packet_entry_header::number_of_information_elements

Number of TLV information elements appended to this header.

offset_to_frame

uint16_t packet_entry_header::offset_to_frame

Byte offset from the start of this header to the first byte of frame data.

offset_to_next_packet

uint16_t packet_entry_header::offset_to_next_packet

Byte offset from the start of this header to the start of the next packet record.

original_packet_number

uint64_t packet_entry_header::original_packet_number

Original packet number from the source capture, used when merging or filtering.

packet_magic

uint32_t packet_entry_header::packet_magic

Magic number identifying the start of a valid packet record.

packet_number

uint64_t packet_entry_header::packet_number

Sequential packet number assigned by the capture software.

packet_type

uint8_t packet_entry_header::packet_type

Packet type classification (e.g. unicast, broadcast, multicast).

reserved

uint16_t packet_entry_header::reserved

Reserved; must be zero.

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The documentation for this struct was generated from the following file:

• /builds/wireshark/wireshark/wiretap/observer.h