From 32972260b50f39d493cc42a78d9648ed668c2aec Mon Sep 17 00:00:00 2001
Message-Id: <32972260b50f39d493cc42a78d9648ed668c2aec.1590584789.git.lorenzo.bianconi@redhat.com>
From: Han Zhou <hzhou@ovn.org>
Date: Tue, 5 May 2020 23:16:09 -0700
Subject: [PATCH ovn] ovn-northd: Remove useless flow for GW_REDIRECT.
Remove the flow in lr_in_gw_redirect stage:
A priority-150 logical flow with match
<code>outport == <var>GW</var> &&
eth.dst == 00:00:00:00:00:00</code> has actions
<code>outport = <var>CR</var>; next;</code>, where
<var>GW</var> is the logical router distributed gateway
port and <var>CR</var> is the <code>chassisredirect</code>
port representing the instance of the logical router
distributed gateway port on the
<code>redirect-chassis</code>.
The commit c0bf32d ("Manage ARP process locally in a DVR scenario") updated
the priority-100 flow in this stage to priority 200, which makes this
priority-150 flow useless, because whatever packets matching this flow
would also match the priority-50 flow.
Cc: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Tested-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: Numan Siddique <numans@ovn.org>
Signed-off-by: Han Zhou <hzhou@ovn.org>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
northd/ovn-northd.8.xml | 12 ------------
northd/ovn-northd.c | 11 -----------
2 files changed, 23 deletions(-)
--- a/northd/ovn-northd.8.xml
+++ b/northd/ovn-northd.8.xml
@@ -2909,18 +2909,6 @@ icmp4 {
<ul>
<li>
- A priority-150 logical flow with match
- <code>outport == <var>GW</var> &&
- eth.dst == 00:00:00:00:00:00</code> has actions
- <code>outport = <var>CR</var>; next;</code>, where
- <var>GW</var> is the logical router distributed gateway
- port and <var>CR</var> is the <code>chassisredirect</code>
- port representing the instance of the logical router
- distributed gateway port on the
- <code>redirect-chassis</code>.
- </li>
-
- <li>
For each NAT rule in the OVN Northbound database that can
be handled in a distributed manner, a priority-200 logical
flow with match <code>ip4.src == <var>B</var> &&
--- a/northd/ovn-northd.c
+++ b/northd/ovn-northd.c
@@ -10143,17 +10143,6 @@ build_lrouter_flows(struct hmap *datapat
ovn_lflow_add_with_hint(lflows, od, S_ROUTER_IN_GW_REDIRECT, 50,
ds_cstr(&match), ds_cstr(&actions),
stage_hint);
-
- /* If the Ethernet destination has not been resolved,
- * redirect to the central instance of the l3dgw_port.
- * Such traffic will be replaced by an ARP request or ND
- * Neighbor Solicitation in the ARP request ingress
- * table, before being redirected to the central instance.
- */
- ds_put_format(&match, " && eth.dst == 00:00:00:00:00:00");
- ovn_lflow_add_with_hint(lflows, od, S_ROUTER_IN_GW_REDIRECT, 150,
- ds_cstr(&match), ds_cstr(&actions),
- stage_hint);
}
/* Packets are allowed by default. */