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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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26
ntp_sources.c
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@@ -776,7 +776,8 @@ NSR_GetLocalRefid(IPAddr *address)
/* This routine is called by ntp_io when a new packet arrives off the network,
possibly with an authentication tail */
void
NSR_ProcessReceive(NTP_Packet *message, struct timespec *now, double now_err, NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr, int length)
NSR_ProcessRx(NTP_Packet *message, struct timespec *rx_ts, double rx_ts_err,
NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr, int length)
{
SourceRecord *record;
struct SourcePool *pool;
@@ -788,7 +789,7 @@ NSR_ProcessReceive(NTP_Packet *message, struct timespec *now, double now_err, NT
if (found == 2) { /* Must match IP address AND port number */
record = get_record(slot);
if (!NCR_ProcessKnown(message, now, now_err, record->data, local_addr, length))
if (!NCR_ProcessRxKnown(message, rx_ts, rx_ts_err, record->data, local_addr, length))
return;
if (record->tentative) {
@@ -809,7 +810,26 @@ NSR_ProcessReceive(NTP_Packet *message, struct timespec *now, double now_err, NT
}
}
} else {
NCR_ProcessUnknown(message, now, now_err, remote_addr, local_addr, length);
NCR_ProcessRxUnknown(message, rx_ts, rx_ts_err, remote_addr, local_addr, length);
}
}
/* ================================================== */
void
NSR_ProcessTx(NTP_Packet *message, struct timespec *tx_ts, double tx_ts_err,
NTP_Remote_Address *remote_addr, NTP_Local_Address *local_addr, int length)
{
SourceRecord *record;
int slot, found;
find_slot(remote_addr, &slot, &found);
if (found == 2) { /* Must match IP address AND port number */
record = get_record(slot);
NCR_ProcessTxKnown(message, tx_ts, tx_ts_err, record->data, local_addr, length);
} else {
NCR_ProcessTxUnknown(message, tx_ts, tx_ts_err, remote_addr, local_addr, length);
}
}