netdev - [patch net-next] bridge: try switchdev op first in __vlan_vid

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1444391651-13775-1-git-send-email-jiri@resnulli.us>
Date:	Fri,  9 Oct 2015 13:54:11 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, idosch@...lanox.com, eladr@...lanox.com,
	sfeldma@...il.com, f.fainelli@...il.com, linux@...ck-us.net,
	vivien.didelot@...oirfairelinux.com, andrew@...n.ch,
	john.fastabend@...il.com, David.Laight@...LAB.COM
Subject: [patch net-next] bridge: try switchdev op first in __vlan_vid_add/del

From: Jiri Pirko <jiri@...lanox.com>

Some drivers need to implement both switchdev vlan ops and
vid_add/kill ndos. For that to work in bridge code, we need to try
switchdev op first when adding/deleting vlan id.

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 net/bridge/br_vlan.c | 58 ++++++++++++++++++++--------------------------------
 1 file changed, 22 insertions(+), 36 deletions(-)

diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index eae07ee..975deb9 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -72,28 +72,20 @@ static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags)
 static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
 			  u16 vid, u16 flags)
 {
-	const struct net_device_ops *ops = dev->netdev_ops;
+	struct switchdev_obj_port_vlan v = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.flags = flags,
+		.vid_begin = vid,
+		.vid_end = vid,
+	};
 	int err;
 
-	/* If driver uses VLAN ndo ops, use 8021q to install vid
-	 * on device, otherwise try switchdev ops to install vid.
+	/* Try switchdev op first. In case it is not supported, fallback to
+	 * 8021q add.
 	 */
-
-	if (ops->ndo_vlan_rx_add_vid) {
-		err = vlan_vid_add(dev, br->vlan_proto, vid);
-	} else {
-		struct switchdev_obj_port_vlan v = {
-			.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
-			.flags = flags,
-			.vid_begin = vid,
-			.vid_end = vid,
-		};
-
-		err = switchdev_port_obj_add(dev, &v.obj);
-		if (err == -EOPNOTSUPP)
-			err = 0;
-	}
-
+	err = switchdev_port_obj_add(dev, &v.obj);
+	if (err == -EOPNOTSUPP)
+		return vlan_vid_add(dev, br->vlan_proto, vid);
 	return err;
 }
 
@@ -122,27 +114,21 @@ static void __vlan_del_list(struct net_bridge_vlan *v)
 static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
 			  u16 vid)
 {
-	const struct net_device_ops *ops = dev->netdev_ops;
-	int err = 0;
+	struct switchdev_obj_port_vlan v = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid_begin = vid,
+		.vid_end = vid,
+	};
+	int err;
 
-	/* If driver uses VLAN ndo ops, use 8021q to delete vid
-	 * on device, otherwise try switchdev ops to delete vid.
+	/* Try switchdev op first. In case it is not supported, fallback to
+	 * 8021q del.
 	 */
-
-	if (ops->ndo_vlan_rx_kill_vid) {
+	err = switchdev_port_obj_del(dev, &v.obj);
+	if (err == -EOPNOTSUPP) {
 		vlan_vid_del(dev, br->vlan_proto, vid);
-	} else {
-		struct switchdev_obj_port_vlan v = {
-			.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
-			.vid_begin = vid,
-			.vid_end = vid,
-		};
-
-		err = switchdev_port_obj_del(dev, &v.obj);
-		if (err == -EOPNOTSUPP)
-			err = 0;
+		return 0;
 	}
-
 	return err;
 }
 
-- 
1.9.3

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html