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Date:   Thu, 17 Dec 2020 03:58:21 +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 8/9] mlxsw: spectrum_switchdev: remove transactional logic for VLAN objects

As of commit 457e20d65924 ("mlxsw: spectrum_switchdev: Avoid returning
errors in commit phase"), the mlxsw driver performs the VLAN object
offloading during the prepare phase. So conversion just seems to be a
matter of removing the code that was running in the commit phase.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 .../mellanox/mlxsw/spectrum_switchdev.c       | 38 +++----------------
 1 file changed, 5 insertions(+), 33 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index e248f9deb2ec..c775c9edea78 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1199,7 +1199,6 @@ mlxsw_sp_br_ban_rif_pvid_change(struct mlxsw_sp *mlxsw_sp,
 
 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 				   const struct switchdev_obj_port_vlan *vlan,
-				   struct switchdev_trans *trans,
 				   struct netlink_ext_ack *extack)
 {
 	bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
@@ -1213,8 +1212,7 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 		int err = 0;
 
 		if ((vlan->flags & BRIDGE_VLAN_INFO_BRENTRY) &&
-		    br_vlan_enabled(orig_dev) &&
-		    switchdev_trans_ph_prepare(trans))
+		    br_vlan_enabled(orig_dev))
 			err = mlxsw_sp_br_ban_rif_pvid_change(mlxsw_sp,
 							      orig_dev, vlan);
 		if (!err)
@@ -1222,9 +1220,6 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
 		return err;
 	}
 
-	if (switchdev_trans_ph_commit(trans))
-		return 0;
-
 	bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
 	if (WARN_ON(!bridge_port))
 		return -EINVAL;
@@ -1776,29 +1771,20 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
 {
 	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 	const struct switchdev_obj_port_vlan *vlan;
-	struct switchdev_trans trans;
 	int err = 0;
 
 	switch (obj->id) {
 	case SWITCHDEV_OBJ_ID_PORT_VLAN:
 		vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
 
-		trans.ph_prepare = true;
-		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
-					      extack);
+		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, extack);
 		if (err)
 			break;
 
-		/* The event is emitted before the changes are actually
-		 * applied to the bridge. Therefore schedule the respin
-		 * call for later, so that the respin logic sees the
+		/* Schedule the respin call, so that the respin logic sees the
 		 * updated bridge state.
 		 */
 		mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp);
-
-		trans.ph_prepare = false;
-		err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
-					      extack);
 		break;
 	case SWITCHDEV_OBJ_ID_PORT_MDB:
 		err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
@@ -3364,8 +3350,7 @@ mlxsw_sp_switchdev_vxlan_vlan_del(struct mlxsw_sp *mlxsw_sp,
 static int
 mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
 				   struct switchdev_notifier_port_obj_info *
-				   port_obj_info,
-				   struct switchdev_trans *trans)
+				   port_obj_info)
 {
 	struct switchdev_obj_port_vlan *vlan =
 		SWITCHDEV_OBJ_PORT_VLAN(port_obj_info->obj);
@@ -3388,9 +3373,6 @@ mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
 
 	port_obj_info->handled = true;
 
-	if (switchdev_trans_ph_commit(trans))
-		return 0;
-
 	bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
 	if (!bridge_device)
 		return -EINVAL;
@@ -3451,22 +3433,12 @@ mlxsw_sp_switchdev_handle_vxlan_obj_add(struct net_device *vxlan_dev,
 					struct switchdev_notifier_port_obj_info *
 					port_obj_info)
 {
-	struct switchdev_trans trans;
 	int err = 0;
 
 	switch (port_obj_info->obj->id) {
 	case SWITCHDEV_OBJ_ID_PORT_VLAN:
-		trans.ph_prepare = true;
-		err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
-							 port_obj_info,
-							 &trans);
-		if (err)
-			break;
-
-		trans.ph_prepare = false;
 		err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
-							 port_obj_info,
-							 &trans);
+							 port_obj_info);
 		break;
 	default:
 		break;
-- 
2.25.1

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