linux-kernel - [PATCH net-next 7/9] net: bridge: Stop calling switchdev_port_attr

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Message-Id: <20190213220638.1552-8-f.fainelli@gmail.com>
Date:   Wed, 13 Feb 2019 14:06:36 -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 7/9] net: bridge: Stop calling switchdev_port_attr_get()

Now that all switchdev drivers have been converted to checking the
bridge port flags during the prepare phase of the
switchdev_port_attr_set() when the process
SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, we can avoid calling
switchdev_port_attr_get() with
SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 net/bridge/br_switchdev.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index db9e8ab96d48..8f88f8a1a7fa 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -64,29 +64,27 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p,
 {
 	struct switchdev_attr attr = {
 		.orig_dev = p->dev,
-		.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
+		.id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
+		.u.brport_flags = flags,
 	};
 	int err;
 
 	if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD)
 		return 0;
 
-	err = switchdev_port_attr_get(p->dev, &attr);
-	if (err == -EOPNOTSUPP)
-		return 0;
-	if (err)
+	err = switchdev_port_attr_set(p->dev, &attr);
+	if (err && err != -EOPNOTSUPP)
 		return err;
 
-	/* Check if specific bridge flag attribute offload is supported */
-	if (!(attr.u.brport_flags_support & mask)) {
+	if (err == -EOPNOTSUPP) {
 		br_warn(p->br, "bridge flag offload is not supported %u(%s)\n",
 			(unsigned int)p->port_no, p->dev->name);
-		return -EOPNOTSUPP;
+		return err;
 	}
 
 	attr.id = SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS;
 	attr.flags = SWITCHDEV_F_DEFER;
-	attr.u.brport_flags = flags;
+
 	err = switchdev_port_attr_set(p->dev, &attr);
 	if (err) {
 		br_warn(p->br, "error setting offload flag on port %u(%s)\n",
-- 
2.17.1