diff options
| author | Ido Schimmel | 2018-01-09 15:40:26 +0100 |
|---|---|---|
| committer | David S. Miller | 2018-01-10 21:14:44 +0100 |
| commit | 7696c06a189c0f1f4d0a7e49e28d10e1050ec529 (patch) | |
| tree | 523cddaf3bdb72c4116ace07b533d7ef131c3190 /net | |
| parent | ipv6: Calculate hash thresholds for IPv6 nexthops (diff) | |
| download | kernel-qcow2-linux-7696c06a189c0f1f4d0a7e49e28d10e1050ec529.tar.gz kernel-qcow2-linux-7696c06a189c0f1f4d0a7e49e28d10e1050ec529.tar.xz kernel-qcow2-linux-7696c06a189c0f1f4d0a7e49e28d10e1050ec529.zip | |
ipv6: Use a 31-bit multipath hash
The hash thresholds assigned to IPv6 nexthops are in the range of
[-1, 2^31 - 1], where a negative value is assigned to nexthops that
should not be considered during multipath selection.
Therefore, in a similar fashion to IPv4, we need to use the upper
31-bits of the multipath hash for multipath selection.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/route.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index ced2c9bed10b..09e8e10b101d 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1833,10 +1833,10 @@ u32 rt6_multipath_hash(const struct flowi6 *fl6, const struct sk_buff *skb) if (skb) { ip6_multipath_l3_keys(skb, &hash_keys); - return flow_hash_from_keys(&hash_keys); + return flow_hash_from_keys(&hash_keys) >> 1; } - return get_hash_from_flowi6(fl6); + return get_hash_from_flowi6(fl6) >> 1; } void ip6_route_input(struct sk_buff *skb) |