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| author | dillon <dillon@FreeBSD.org> | 1998-12-12 21:45:49 +0000 |
|---|---|---|
| committer | dillon <dillon@FreeBSD.org> | 1998-12-12 21:45:49 +0000 |
| commit | 21b42c731e9d4dd0805ce9d50ac827a8ae7efe25 (patch) | |
| tree | 6bfd629c156a29420a22ebfb2f657cbf1de57564 /sys/netinet/igmp.c | |
| parent | b9c991f4868ca0e7c01e203ee7261d0064d5d013 (diff) | |
| download | FreeBSD-src-21b42c731e9d4dd0805ce9d50ac827a8ae7efe25.zip FreeBSD-src-21b42c731e9d4dd0805ce9d50ac827a8ae7efe25.tar.gz | |
PR: kern/8990
If timer calculation results in degenerate value (0), force it to 1
to avoid divide-by-zero panic later on in calls to IGMP_RANDOM_DELAY().
I considered simply adding 1 to the timer calculation, but was unsure
if the calculation was part of the IGMP standard or not so did not want
to mess with it for all cases.
Diffstat (limited to 'sys/netinet/igmp.c')
| -rw-r--r-- | sys/netinet/igmp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/netinet/igmp.c b/sys/netinet/igmp.c index 8a4bd85..713be24 100644 --- a/sys/netinet/igmp.c +++ b/sys/netinet/igmp.c @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * @(#)igmp.c 8.1 (Berkeley) 7/19/93 - * $Id: igmp.c,v 1.24 1997/10/11 18:31:31 phk Exp $ + * $Id: igmp.c,v 1.25 1997/10/12 20:25:21 phk Exp $ */ /* @@ -198,6 +198,8 @@ igmp_input(m, iphlen) ip = mtod(m, struct ip *); timer = igmp->igmp_code * PR_FASTHZ / IGMP_TIMER_SCALE; + if (timer == 0) + timer = 1; rti = find_rti(ifp); /* |
