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2004-05-05 Anthony.Golia@morganstanley.com

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* ripd.c: (rip_update_jitter) Bound jitter to a more sensible
          value, eg 1/4 of update time.
This commit is contained in:
paul 2004-05-05 14:09:37 +00:00
parent 5f77949e7e
commit 239389ba30
2 changed files with 21 additions and 1 deletions
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5
ripd/ChangeLog
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@ -1,3 +1,8 @@
2004-05-05 Anthony.Golia@morganstanley.com
* ripd.c: (rip_update_jitter) Bound jitter to a more sensible
value, eg 1/4 of update time.
2004-05-03 Paul Jakma <paul@dishone.st>
* ripd.c: (rip_rte_process) fix typo in merge of previous patch

17
ripd/ripd.c
View File

@ -2710,7 +2710,22 @@ rip_request_send (struct sockaddr_in *to, struct interface *ifp,
int
rip_update_jitter (unsigned long time)
{
return ((rand () % (time + 1)) - (time / 2));
#define JITTER_BOUND 4
/* We want to get the jitter to +/- 1/JITTER_BOUND the interval.
Given that, we cannot let time be less than JITTER_BOUND seconds.
The RIPv2 RFC says jitter should be small compared to
update_time. We consider 1/JITTER_BOUND to be small.
*/
int jitter_input = time;
int jitter;
if (jitter_input < JITTER_BOUND)
jitter_input = JITTER_BOUND;
jitter = (((rand () % ((jitter_input * 2) + 1)) - jitter_input));
return jitter/JITTER_BOUND;
}
void