netdev - [patch net] sched: cls_flower: remove from hashtable only in case skip sw flag is not set

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Date:   Mon, 28 Nov 2016 15:40:13 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jhs@...atatu.com, idosch@...lanox.com,
        eladr@...lanox.com, ogerlitz@...lanox.com, hadarh@...lanox.com,
        amir@...ai.me
Subject: [patch net] sched: cls_flower: remove from hashtable only in case skip sw flag is not set

From: Jiri Pirko <jiri@...lanox.com>

Be symmetric to hashtable insert and remove filter from hashtable only
in case skip sw flag is not set.

Fixes: e69985c67c33 ("net/sched: cls_flower: Introduce support in SKIP SW flag")
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 net/sched/cls_flower.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index f6f40fb..641c44c 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -711,8 +711,9 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
 		goto errout;
 
 	if (fold) {
-		rhashtable_remove_fast(&head->ht, &fold->ht_node,
-				       head->ht_params);
+		if (!tc_skip_sw(fold->flags))
+			rhashtable_remove_fast(&head->ht, &fold->ht_node,
+					       head->ht_params);
 		fl_hw_destroy_filter(tp, (unsigned long)fold);
 	}
 
@@ -739,8 +740,9 @@ static int fl_delete(struct tcf_proto *tp, unsigned long arg)
 	struct cls_fl_head *head = rtnl_dereference(tp->root);
 	struct cls_fl_filter *f = (struct cls_fl_filter *) arg;
 
-	rhashtable_remove_fast(&head->ht, &f->ht_node,
-			       head->ht_params);
+	if (!tc_skip_sw(f->flags))
+		rhashtable_remove_fast(&head->ht, &f->ht_node,
+				       head->ht_params);
 	list_del_rcu(&f->list);
 	fl_hw_destroy_filter(tp, (unsigned long)f);
 	tcf_unbind_filter(tp, &f->res);
-- 
2.7.4