DWS/chrony
1
0
Fork 0
mirror of https://gitlab.com/chrony/chrony.git synced 2025-12-03 17:35:06 -05:00
Code Issues Packages Projects Releases Wiki Activity

Track reachability in sources module

Browse Source 
Add new flag to source struct to indicate when source is selectable
(packets with good headers are received) and use a reachability
register for last 8 samples instead of the reachable flag. Source
drivers now provide only reachability updates.
This commit is contained in:
Miroslav Lichvar
2010-12-16 16:01:29 +01:00
parent ff69e86559
commit 0c4968ec51
4 changed files with 65 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
ntp_core.c
View File

@@ -636,18 +636,6 @@ transmit_timeout(void *arg)
inst->presend_done = 0; /* Reset for next time */
++inst->tx_count;
if (inst->tx_count >= 9) {
/* Mark source unreachable */
SRC_UnsetReachable(inst->source);
} else if (inst->tx_count >= 3) {
if (inst->auto_offline) {
NCR_TakeSourceOffline(inst);
}
/* Do reselection */
SRC_SelectSource(0);
} else {
/* Nothing */
}
/* If the source loses connectivity, back off the sampling rate to reduce
wasted sampling. If it's the source to which we are currently locked,
@@ -655,7 +643,14 @@ transmit_timeout(void *arg)
if (inst->tx_count >= 2) {
/* Implies we have missed at least one transmission */
adjust_poll(inst, SRC_IsSyncPeer(inst->source) ? 0.1 : 0.25);
SRC_UpdateReachability(inst->source, 0);
if (inst->auto_offline && inst->tx_count >= 3) {
NCR_TakeSourceOffline(inst);
}
}
my_mode = inst->mode;
@@ -700,7 +695,7 @@ transmit_timeout(void *arg)
case MD_OFFLINE:
do_timer = 0;
/* Mark source unreachable */
SRC_UnsetReachable(inst->source);
SRC_ResetReachability(inst->source);
break;
case MD_BURST_WAS_ONLINE:
case MD_BURST_WAS_OFFLINE:
@@ -1074,16 +1069,17 @@ receive_packet(NTP_Packet *message, struct timeval *now, double now_err, NCR_Ins
if (valid_header && valid_data) {
inst->tx_count = 0;
SRC_UpdateReachability(inst->source, 1);
/* Mark the source as suitable for synchronisation when both header and
data are good, unmark when header is not good (i.e. the stratum is
higher than ours) */
if (good_header) {
if (good_data) {
SRC_SetReachable(inst->source);
SRC_SetSelectable(inst->source);
}
} else {
SRC_UnsetReachable(inst->source);
SRC_UnsetSelectable(inst->source);
}
}
@@ -1202,7 +1198,7 @@ receive_packet(NTP_Packet *message, struct timeval *now, double now_err, NCR_Ins
case MD_OFFLINE:
requeue_transmit = 0;
/* Mark source unreachable */
SRC_UnsetReachable(inst->source);
SRC_ResetReachability(inst->source);
break; /* Even if we've received something, we don't want to
transmit back. This might be a symmetric active peer
that is trying to talk to us. */
@@ -1714,7 +1710,7 @@ NCR_TakeSourceOffline(NCR_Instance inst)
inst->timer_running = 0;
inst->opmode = MD_OFFLINE;
/* Mark source unreachable */
SRC_UnsetReachable(inst->source);
SRC_ResetReachability(inst->source);
}
break;
case MD_OFFLINE: