gnrc_netif_hdr_t Struct Reference

Generic network interface header. More...

Detailed Description

Generic network interface header.

The link layer addresses included in this header are put in memory directly following this struct.

Definition at line 126 of file hdr.h.

#include <hdr.h>

Data Fields
uint8_t	src_l2addr_len
	length of l2 source address in byte
uint8_t	dst_l2addr_len
	length of l2 destination address in byte
kernel_pid_t	if_pid
	PID of network interface.
uint8_t	flags
	flags as defined above
uint8_t	lqi
	LQI of received packet or GNRC_NETIF_HDR_NO_LQI.
int16_t	rssi
	RSSI of received packet or GNRC_NETIF_HDR_NO_RSSI.
uint64_t	timestamp
	Timestamp of reception in nanoseconds since epoch. More...

Field Documentation

timestamp

uint64_t gnrc_netif_hdr_t::timestamp

Timestamp of reception in nanoseconds since epoch.

Note

Only when GNRC_NETIF_HDR_FLAGS_TIMESTAMP is set, this field contains valid info.

This field is only provided if module gnrc_netif_timestamp is used. Keep in mind that when the hardware does not provide timestamping, the network device driver could choose to provide this in software, which adds the delay and jitter of the ISR handling to the timestamp. Please keep also in mind that a hardware implementation might not be able to reliable timestamp every frame - e.g. a full-duplex wired interface might be unable to timestamp a received frame while timestamping an outgoing frame.

Definition at line 155 of file hdr.h.

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

• sys/include/net/gnrc/netif/hdr.h