[ovs-git] Open vSwitch: multipath: Fix off-by-one in hash_threshold multipath calculation. (master)

dev at openvswitch.org dev at openvswitch.org
Sat Jan 22 01:23:01 UTC 2011


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- Log -----------------------------------------------------------------
commit d7bf2b001f07e63054bbc0d58fe64ce47bc3ab21
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=d7bf2b001f07e63054bbc0d58fe64ce47bc3ab21
Author: Ben Pfaff <blp at nicira.com>
		
multipath: Fix off-by-one in hash_threshold multipath calculation.
		
0xffffffff / (0xffffffff / n) can have a value as large as n (consider the
n == 1 case), but we need a value no bigger than n-1.  So add 1 before
dividing to fix the problem.

This caused a test failure on Debian "lenny" amd64 when apparently
unrelated code changed.

Reported-by: Justin Pettit <jpettit at nicira.com>


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Summary of changes:
 lib/multipath.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)


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