From 3d5f08a825a978cd6853989a5df8c9b9811e7fb8 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Fri, 22 Jan 2021 16:12:38 +0000 Subject: ip: Router ID included in flow hash Type: feature A device/router needs to have a unique ID which is included in the flow has so that flows are not polarised through the network, i.e. each deice in the network chooses the same nth link for the same flow. Signed-off-by: Neale Ranns Change-Id: I963e03674adbb085902b4084fdc4886b88f5734c --- src/vnet/ip/ip4_inlines.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/vnet/ip/ip4_inlines.h') diff --git a/src/vnet/ip/ip4_inlines.h b/src/vnet/ip/ip4_inlines.h index bdb82af0034..3075fbf42a1 100644 --- a/src/vnet/ip/ip4_inlines.h +++ b/src/vnet/ip/ip4_inlines.h @@ -89,6 +89,7 @@ ip4_compute_flow_hash (const ip4_header_t * ip, b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0; c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? (t1 << 16) | t2 : (t2 << 16) | t1; + a ^= ip_flow_hash_router_id; hash_v3_mix32 (a, b, c); hash_v3_finalize32 (a, b, c); -- cgit 1.2.3-korg