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ntp: add support for processing of transmitted packets

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Add new functions for processing of packets after they are actually
sent by the kernel or HW in order to get a more accurate transmit
timestamp. Rename old functions for processing of received packets and
their parameters to make the naming more consistent.
This commit is contained in:
Miroslav Lichvar
2016-10-07 14:08:07 +02:00
parent a8c6bea2d5
commit 8f6a1b5318
7 changed files with 150 additions and 42 deletions
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18
ntp_core.h
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@@ -63,11 +63,25 @@ extern void NCR_ChangeRemoteAddress(NCR_Instance inst, NTP_Remote_Address *remot
/* This routine is called when a new packet arrives off the network,
and it relates to a source we have an ongoing protocol exchange with */
extern int NCR_ProcessKnown(NTP_Packet *message, struct timespec *now, double now_err, NCR_Instance data, NTP_Local_Address *local_addr, int length);
extern int NCR_ProcessRxKnown(NTP_Packet *message, struct timespec *rx_ts, double rx_ts_err,
NCR_Instance inst, NTP_Local_Address *local_addr, int length);
/* This routine is called when a new packet arrives off the network,
and we do not recognize its source */
extern void NCR_ProcessUnknown(NTP_Packet *message, struct timespec *now, double now_err, NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr, int length);
extern void NCR_ProcessRxUnknown(NTP_Packet *message, struct timespec *rx_ts, double rx_ts_err,
NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr,
int length);
/* This routine is called when a packet is sent to a source we have
an ongoing protocol exchange with */
extern void NCR_ProcessTxKnown(NTP_Packet *message, struct timespec *tx_ts, double tx_ts_err,
NCR_Instance inst, NTP_Local_Address *local_addr, int length);
/* This routine is called when a packet is sent to a destination we
do not recognize */
extern void NCR_ProcessTxUnknown(NTP_Packet *message, struct timespec *tx_ts, double tx_ts_err,
NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr,
int length);
/* Slew receive and transmit times in instance records */
extern void NCR_SlewTimes(NCR_Instance inst, struct timespec *when, double dfreq, double doffset);