diff options
| author | brooks <brooks@FreeBSD.org> | 2005-02-25 19:46:41 +0000 |
|---|---|---|
| committer | brooks <brooks@FreeBSD.org> | 2005-02-25 19:46:41 +0000 |
| commit | e5a9c072c1563b17574a8123220f8773afeedcee (patch) | |
| tree | 5895b9b8e3331ee9dc052b57c4b96c4d23adc658 /share/man/man9/ifnet.9 | |
| parent | b3f1395f0dd0fa285d4af6993d6562c37844fb6f (diff) | |
| download | FreeBSD-src-e5a9c072c1563b17574a8123220f8773afeedcee.zip FreeBSD-src-e5a9c072c1563b17574a8123220f8773afeedcee.tar.gz | |
Change the definition of struct if_data's member ifi_epoch from wall
clock time to uptime because wall clock time may go backwards.
This is a change in the API which will impact SNMP agents who are using
ifi_epoch to set RFC2233's ifCounterDiscontinuityTime. None are know to
exist today. This will not impact applications that are using the
<index, epoch> tuple to verify interface uniqueness except that it
eliminates a race which could lead to a false assumption of uniqueness.
Because this is a behavior change, bump __FreeBSD_version.
Discussed with: re (jhb, scottl)
MFC after: 3 days
Pointed out by: pkh (way back at EuroBSDCon)
Pointy hat: brooks
Diffstat (limited to 'share/man/man9/ifnet.9')
| -rw-r--r-- | share/man/man9/ifnet.9 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/share/man/man9/ifnet.9 b/share/man/man9/ifnet.9 index 86c9724..9eeb34b 100644 --- a/share/man/man9/ifnet.9 +++ b/share/man/man9/ifnet.9 @@ -729,7 +729,7 @@ the current value of .Va if_capenable . .It ifi_epoch .Pq Vt time_t -The time the interface was attached or the last time the statistics +The system uptime when interface was attached or the statistics below were reset. This is intended to be used to set the SNMP variable .Va ifCounterDiscontinuityTime . |
