netdev - [RFC PATCH net-next 4/9] net: dsa: remove the transactional logic from ageing time notifiers

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Message-Id: <20201217015822.826304-5-vladimir.oltean@nxp.com>
Date:   Thu, 17 Dec 2020 03:58:17 +0200
From:   Vladimir Oltean <vladimir.oltean@....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: [RFC PATCH net-next 4/9] net: dsa: remove the transactional logic from ageing time notifiers

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>
---
 net/dsa/dsa_priv.h |  1 -
 net/dsa/port.c     |  6 +-----
 net/dsa/switch.c   | 13 +++++--------
 3 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 54e2ee1a2131..90a879322b21 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 62f38a36386f..b39a5eebbe27 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 54f8861e937e..39848eac1da8 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