netdev - [PATCH net-next] Revert "net: sched: route: don't set arg->stop in route4

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Date:   Wed, 27 Feb 2019 15:48:59 +0200
From:   Vlad Buslov <vladbu@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us,
        davem@...emloft.net, Vlad Buslov <vladbu@...lanox.com>
Subject: [PATCH net-next] Revert "net: sched: route: don't set arg->stop in route4_walk() when empty"

This reverts commit 3027ff41f67c ("net: sched: route: don't set arg->stop
in route4_walk() when empty")

Cls API function tcf_proto_is_empty() was changed in commit
6676d5e416ee ("net: sched: set dedicated tcf_walker flag when tp is empty")
to no longer depend on arg->stop to determine that classifier instance is
empty. Instead, it adds dedicated arg->nonempty field, which makes the fix
in route classifier no longer necessary.

Signed-off-by: Vlad Buslov <vladbu@...lanox.com>
---
 net/sched/cls_route.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index f006af23b64a..319f68cc233f 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -567,7 +567,10 @@ static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg,
 	struct route4_head *head = rtnl_dereference(tp->root);
 	unsigned int h, h1;
 
-	if (head == NULL || arg->stop)
+	if (head == NULL)
+		arg->stop = 1;
+
+	if (arg->stop)
 		return;
 
 	for (h = 0; h <= 256; h++) {
-- 
2.13.6