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Date:   Tue,  1 Sep 2020 20:26:14 +0800
From:   xiangxia.m.yue@...il.com
To:     sbrivio@...hat.com, davem@...emloft.net, pshelar@....org,
        xiyou.wangcong@...il.com
Cc:     dev@...nvswitch.org, netdev@...r.kernel.org,
        Tonghao Zhang <xiangxia.m.yue@...il.com>
Subject: [PATCH net-next v4 3/3] net: openvswitch: remove unused keep_flows

From: Tonghao Zhang <xiangxia.m.yue@...il.com>

keep_flows was introduced by [1], which used as flag to delete flows or not.
When rehashing or expanding the table instance, we will not flush the flows.
Now don't use it anymore, remove it.

[1] - https://github.com/openvswitch/ovs/commit/acd051f1761569205827dc9b037e15568a8d59f8
Cc: Pravin B Shelar <pshelar@....org>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>
Acked-by: Pravin B Shelar <pshelar@....org>
---
 net/openvswitch/flow_table.c | 6 ------
 net/openvswitch/flow_table.h | 1 -
 2 files changed, 7 deletions(-)

diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c
index 80849bdf45d2..87c286ad660e 100644
--- a/net/openvswitch/flow_table.c
+++ b/net/openvswitch/flow_table.c
@@ -168,7 +168,6 @@ static struct table_instance *table_instance_alloc(int new_size)
 
 	ti->n_buckets = new_size;
 	ti->node_ver = 0;
-	ti->keep_flows = false;
 	get_random_bytes(&ti->hash_seed, sizeof(u32));
 
 	return ti;
@@ -481,9 +480,6 @@ void table_instance_flow_flush(struct flow_table *table,
 {
 	int i;
 
-	if (ti->keep_flows)
-		return;
-
 	for (i = 0; i < ti->n_buckets; i++) {
 		struct hlist_head *head = &ti->buckets[i];
 		struct hlist_node *n;
@@ -603,8 +599,6 @@ static void flow_table_copy_flows(struct table_instance *old,
 						 lockdep_ovsl_is_held())
 				table_instance_insert(new, flow);
 	}
-
-	old->keep_flows = true;
 }
 
 static struct table_instance *table_instance_rehash(struct table_instance *ti,
diff --git a/net/openvswitch/flow_table.h b/net/openvswitch/flow_table.h
index 6e7d4ac59353..d8fb7a3a3dfd 100644
--- a/net/openvswitch/flow_table.h
+++ b/net/openvswitch/flow_table.h
@@ -53,7 +53,6 @@ struct table_instance {
 	struct rcu_head rcu;
 	int node_ver;
 	u32 hash_seed;
-	bool keep_flows;
 };
 
 struct flow_table {
-- 
2.23.0

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