linux-kernel - [PATCH net-next 05/16] rocker: Check bridge flags during prepare phase

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Message-Id: <20190209003248.31088-6-f.fainelli@gmail.com>
Date:   Fri,  8 Feb 2019 16:32:37 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Ido Schimmel <idosch@...lanox.com>,
        linux-kernel@...r.kernel.org (open list),
        devel@...verdev.osuosl.org (open list:STAGING SUBSYSTEM),
        bridge@...ts.linux-foundation.org (moderated list:ETHERNET BRIDGE),
        jiri@...lanox.com, andrew@...n.ch, vivien.didelot@...il.com
Subject: [PATCH net-next 05/16] rocker: Check bridge flags during prepare phase

In preparation for getting rid of switchdev_port_attr_get(), have rocker
check for the bridge flags being set through switchdev_port_attr_set()
with the SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS attribute identifier.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/ethernet/rocker/rocker_main.c | 40 ++++++++++++++---------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index 66f72f8c46e5..8657313b6f30 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -1565,18 +1565,42 @@ static int rocker_world_port_attr_stp_state_set(struct rocker_port *rocker_port,
 	return wops->port_attr_stp_state_set(rocker_port, state);
 }
 
+static int
+rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port *
+						rocker_port,
+						unsigned long *
+						p_brport_flags_support)
+{
+	struct rocker_world_ops *wops = rocker_port->rocker->wops;
+
+	if (!wops->port_attr_bridge_flags_support_get)
+		return -EOPNOTSUPP;
+	return wops->port_attr_bridge_flags_support_get(rocker_port,
+							p_brport_flags_support);
+}
+
 static int
 rocker_world_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
 					unsigned long brport_flags,
 					struct switchdev_trans *trans)
 {
 	struct rocker_world_ops *wops = rocker_port->rocker->wops;
+	unsigned long brport_flags_s;
+	int err;
 
 	if (!wops->port_attr_bridge_flags_set)
 		return -EOPNOTSUPP;
 
-	if (switchdev_trans_ph_prepare(trans))
+	if (switchdev_trans_ph_prepare(trans)) {
+		err = rocker_world_port_attr_bridge_flags_support_get(rocker_port,
+							      &brport_flags_s);
+		if (err)
+			return err;
+
+		if (brport_flags & ~brport_flags_s)
+			return -EOPNOTSUPP;
 		return 0;
+	}
 
 	return wops->port_attr_bridge_flags_set(rocker_port, brport_flags,
 						trans);
@@ -1593,20 +1617,6 @@ rocker_world_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
 	return wops->port_attr_bridge_flags_get(rocker_port, p_brport_flags);
 }
 
-static int
-rocker_world_port_attr_bridge_flags_support_get(const struct rocker_port *
-						rocker_port,
-						unsigned long *
-						p_brport_flags_support)
-{
-	struct rocker_world_ops *wops = rocker_port->rocker->wops;
-
-	if (!wops->port_attr_bridge_flags_support_get)
-		return -EOPNOTSUPP;
-	return wops->port_attr_bridge_flags_support_get(rocker_port,
-							p_brport_flags_support);
-}
-
 static int
 rocker_world_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
 					      u32 ageing_time,
-- 
2.17.1