netdev - [PATCH v3 net-next 06/11] net: dsa: remove the transactional logic from ageing time notifiers

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Date:   Thu,  7 Jan 2021 01:17:23 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Vadym Kochan <vkochan@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Ivan Vecera <ivecera@...hat.com>
Subject: [PATCH v3 net-next 06/11] net: dsa: remove the transactional logic from ageing time notifiers

From: Vladimir Oltean <vladimir.oltean@....com>

Remove the shim introduced in DSA for offloading the bridge ageing time
from switchdev, by first checking whether the ageing time is within the
range limits requested by the driver.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>
Acked-by: Jiri Pirko <jiri@...dia.com>
---
Changes in v3:
None.

Changes in v2:
None.

 net/dsa/dsa_priv.h |  1 -
 net/dsa/port.c     |  6 +-----
 net/dsa/switch.c   | 15 ++++++---------
 3 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index c626fed62541..5bd2327d519f 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -29,7 +29,6 @@ enum {
 
 /* DSA_NOTIFIER_AGEING_TIME */
 struct dsa_notifier_ageing_time_info {
-	struct switchdev_trans *trans;
 	unsigned int ageing_time;
 };
 
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 14bf0053ae01..e59bf66c4c0d 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -310,21 +310,17 @@ int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
 	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
 	unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
 	struct dsa_notifier_ageing_time_info info;
-	struct switchdev_trans trans;
 	int err;
 
 	info.ageing_time = ageing_time;
-	info.trans = &trans;
 
-	trans.ph_prepare = true;
 	err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
 	if (err)
 		return err;
 
 	dp->ageing_time = ageing_time;
 
-	trans.ph_prepare = false;
-	return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
+	return 0;
 }
 
 int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags)
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 17979956d756..c6b3ac93bcc7 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -33,15 +33,12 @@ static int dsa_switch_ageing_time(struct dsa_switch *ds,
 				  struct dsa_notifier_ageing_time_info *info)
 {
 	unsigned int ageing_time = info->ageing_time;
-	struct switchdev_trans *trans = info->trans;
-
-	if (switchdev_trans_ph_prepare(trans)) {
-		if (ds->ageing_time_min && ageing_time < ds->ageing_time_min)
-			return -ERANGE;
-		if (ds->ageing_time_max && ageing_time > ds->ageing_time_max)
-			return -ERANGE;
-		return 0;
-	}
+
+	if (ds->ageing_time_min && ageing_time < ds->ageing_time_min)
+		return -ERANGE;
+
+	if (ds->ageing_time_max && ageing_time > ds->ageing_time_max)
+		return -ERANGE;
 
 	/* Program the fastest ageing time in case of multiple bridges */
 	ageing_time = dsa_switch_fastest_ageing_time(ds, ageing_time);
-- 
2.25.1