STRUCT SKB_SHARED_HW(9) Linux Networking STRUCT SKB_SHARED_HW(9)NAME
struct_skb_shared_hwtstamps - hardware time stamps
SYNOPSIS
struct skb_shared_hwtstamps {
ktime_t hwtstamp;
ktime_t syststamp;
};
MEMBERS
hwtstamp
hardware time stamp transformed into duration since arbitrary point in time
syststamp
hwtstamp transformed to system time base
DESCRIPTION
Software time stamps generated by ktime_get_real are stored in skb->tstamp. The relation between the different kinds of time
STAMPS IS AS FOLLOWS
syststamp and tstamp can be compared against each other in arbitrary combinations. The accuracy of a syststamp/tstamp/"syststamp from other
device" comparison is limited by the accuracy of the transformation into system time base. This depends on the device driver and its
underlying hardware.
hwtstamps can only be compared against other hwtstamps from the same device.
This structure is attached to packets as part of the skb_shared_info. Use skb_hwtstamps to get a pointer.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 STRUCT SKB_SHARED_HW(9)
Check Out this Related Man Page
PCAP_SET_TSTAMP_TYPE(3PCAP)PCAP_SET_TSTAMP_TYPE(3PCAP)NAME
pcap_set_tstamp_type - set the time stamp type to be used by a capture device
SYNOPSIS
#include <pcap/pcap.h>
int pcap_set_tstamp_type(pcap_t *p, int tstamp_type);
DESCRIPTION
pcap_set_tstamp_type() sets the the type of time stamp desired for packets captured on the pcap descriptor to the type specified by
tstamp_type. It must be called on a pcap descriptor created by pcap_create() that has not yet been activated by pcap_activate().
pcap_list_tstamp_types() will give a list of the time stamp types supported by a given capture device. See pcap-tstamp(7) for a list of
all the time stamp types.
RETURN VALUE
pcap_set_tstamp_type() returns 0 on success if the specified time stamp type is expected to be supported by the capture device, PCAP_WARN-
ING_TSTAMP_TYPE_NOTSUP on success if the specified time stamp type is not supported by the capture device, PCAP_ERROR_ACTIVATED if called
on a capture handle that has been activated, and PCAP_ERROR_CANTSET_TSTAMP_TYPE if the capture device doesn't support setting the time
stamp type.
SEE ALSO pcap(3PCAP), pcap_list_tstamp_types(3PCAP), pcap_tstamp_type_name_to_val(3PCAP), pcap-tstamp(7)
21 August 2010 PCAP_SET_TSTAMP_TYPE(3PCAP)
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