On 1/9/18 7:40 AM, Ido Schimmel wrote: > Now that each nexthop stores its region boundary in the multipath hash > function's output space, we can use hash-threshold instead of modulo-N > in multipath selection. > > This reduces the number of checks we need to perform during lookup, as > dead and linkdown nexthops are assigned a negative region boundary. In > addition, in contrast to modulo-N, only flows near region boundaries are > affected when a nexthop is added or removed. > > Signed-off-by: Ido Schimmel <ido...@mellanox.com> > --- > net/ipv6/route.c | 36 +++++++++++++----------------------- > 1 file changed, 13 insertions(+), 23 deletions(-) >
Did you consider adding the net->ipv4.sysctl_fib_multipath_use_neigh check as well? ie., if set, verify neighbor is alive before picking that hop Acked-by: David Ahern <dsah...@gmail.com>
