commit 8fbd37edacf3bc95b06d6fa620e28a08b0b0905f
author Bud Grise <griseb@cisco.com> Wed Feb 24 16:14:22 2016 -0500
committer Gerrit Code Review <gerrit@fd.io> Wed Mar 02 17:23:29 2016 +0000
tree 3d2358cfe00ef4e2b206281699fed58421ec5506
parent dc03cf4eb4d2cb515d79d26f7b4cdef174ffa677

Add rotates to v6 worker hash to prevent SIP/DIP synchronizing.

Change-Id: Ibe8ec6271b3f04290a60c0145e59a01d3130500f
Signed-off-by: Todd Foggoa (tfoggoa) <tfoggoa@cisco.com>

vnet/vnet/devices/dpdk/node.c

diff --git a/vnet/vnet/devices/dpdk/node.c b/vnet/vnet/devices/dpdk/node.c
index b981570..72d564b 100644
--- a/vnet/vnet/devices/dpdk/node.c
+++ b/vnet/vnet/devices/dpdk/node.c
@@ -963,9 +963,9 @@
    u64  hash_key;
 
    hash_key = ip->src_address.as_u64[0] ^
-              ip->src_address.as_u64[1] ^
-              ip->dst_address.as_u64[0] ^
-              ip->dst_address.as_u64[1] ^
+              rotate_left(ip->src_address.as_u64[1],13) ^
+              rotate_left(ip->dst_address.as_u64[0],26) ^
+              rotate_left(ip->dst_address.as_u64[1],39) ^
               ip->protocol;
 
    return hash_key;