netdev - [patch net-next 14/20] net: sched: cls_matchall: no need to call tcf_exts

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Message-Id: <20170728144042.6380-15-jiri@resnulli.us>
Date:   Fri, 28 Jul 2017 16:40:36 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jhs@...atatu.com, xiyou.wangcong@...il.com,
        daniel@...earbox.net, mlxsw@...lanox.com
Subject: [patch net-next 14/20] net: sched: cls_matchall: no need to call tcf_exts_change for newly allocated struct

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

As the head struct was allocated right before mall_set_parms call,
no need to use tcf_exts_change to do atomic change, and we can just
fill-up the unused exts struct directly by tcf_exts_validate.

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 net/sched/cls_matchall.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index 0b77f6e..94181e5 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -120,25 +120,17 @@ static int mall_set_parms(struct net *net, struct tcf_proto *tp,
 			  unsigned long base, struct nlattr **tb,
 			  struct nlattr *est, bool ovr)
 {
-	struct tcf_exts e;
 	int err;
 
-	tcf_exts_init(&e, TCA_MATCHALL_ACT, 0);
-	err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
+	err = tcf_exts_validate(net, tp, tb, est, &head->exts, ovr);
 	if (err < 0)
-		goto errout;
+		return err;
 
 	if (tb[TCA_MATCHALL_CLASSID]) {
 		head->res.classid = nla_get_u32(tb[TCA_MATCHALL_CLASSID]);
 		tcf_bind_filter(tp, &head->res, base);
 	}
-
-	tcf_exts_change(&head->exts, &e);
-
 	return 0;
-errout:
-	tcf_exts_destroy(&e);
-	return err;
 }
 
 static int mall_change(struct net *net, struct sk_buff *in_skb,
-- 
2.9.3