netdev - [PATCH net-next 3/3] net: dsa: drop vlan

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Date:	Tue, 23 Feb 2016 12:13:56 -0500
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next 3/3] net: dsa: drop vlan_getnext

The VLAN GetNext operation is specific to some switches, and thus can be
complicated to implement for some drivers.

Remove the support for the vlan_getnext/port_pvid_get approach in favor
of the generic and simpler port_vlan_dump function.

Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
 Documentation/networking/dsa/dsa.txt |  9 ---------
 include/net/dsa.h                    |  3 ---
 net/dsa/slave.c                      | 35 +----------------------------------
 3 files changed, 1 insertion(+), 46 deletions(-)

diff --git a/Documentation/networking/dsa/dsa.txt b/Documentation/networking/dsa/dsa.txt
index 350a502..974e9c3 100644
--- a/Documentation/networking/dsa/dsa.txt
+++ b/Documentation/networking/dsa/dsa.txt
@@ -542,12 +542,6 @@ Bridge layer
 Bridge VLAN filtering
 ---------------------
 
-- port_pvid_get: bridge layer function invoked when a Port-based VLAN ID is
-  queried for the given switch port
-
-- port_pvid_set: bridge layer function invoked when a Port-based VLAN ID needs
-  to be configured on the given switch port
-
 - port_vlan_add: bridge layer function invoked when a VLAN is configured
   (tagged or untagged) for the given switch port
 
@@ -558,9 +552,6 @@ Bridge VLAN filtering
   function that the driver has to call for each VLAN the given port is a member
   of. A switchdev object is used to carry the VID and bridge flags.
 
-- vlan_getnext: bridge layer function invoked to query the next configured VLAN
-  in the switch, i.e. returns the bitmaps of members and untagged ports
-
 - port_fdb_add: bridge layer function invoked when the bridge wants to install a
   Forwarding Database entry, the switch hardware should be programmed with the
   specified address in the specified VLAN Id in the forwarding database
diff --git a/include/net/dsa.h b/include/net/dsa.h
index ebc0d9e..3dd5486 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -316,9 +316,6 @@ struct dsa_switch_driver {
 	int	(*port_vlan_dump)(struct dsa_switch *ds, int port,
 				  struct switchdev_obj_port_vlan *vlan,
 				  int (*cb)(struct switchdev_obj *obj));
-	int	(*port_pvid_get)(struct dsa_switch *ds, int port, u16 *pvid);
-	int	(*vlan_getnext)(struct dsa_switch *ds, u16 *vid,
-				unsigned long *ports, unsigned long *untagged);
 
 	/*
 	 * Forwarding database
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index a9cbb72..cde2923 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -243,44 +243,11 @@ static int dsa_slave_port_vlan_dump(struct net_device *dev,
 {
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct dsa_switch *ds = p->parent;
-	DECLARE_BITMAP(members, DSA_MAX_PORTS);
-	DECLARE_BITMAP(untagged, DSA_MAX_PORTS);
-	u16 pvid, vid = 0;
-	int err;
 
 	if (ds->drv->port_vlan_dump)
 		return ds->drv->port_vlan_dump(ds, p->port, vlan, cb);
 
-	if (!ds->drv->vlan_getnext || !ds->drv->port_pvid_get)
-		return -EOPNOTSUPP;
-
-	err = ds->drv->port_pvid_get(ds, p->port, &pvid);
-	if (err)
-		return err;
-
-	for (;;) {
-		err = ds->drv->vlan_getnext(ds, &vid, members, untagged);
-		if (err)
-			break;
-
-		if (!test_bit(p->port, members))
-			continue;
-
-		memset(vlan, 0, sizeof(*vlan));
-		vlan->vid_begin = vlan->vid_end = vid;
-
-		if (vid == pvid)
-			vlan->flags |= BRIDGE_VLAN_INFO_PVID;
-
-		if (test_bit(p->port, untagged))
-			vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
-
-		err = cb(&vlan->obj);
-		if (err)
-			break;
-	}
-
-	return err == -ENOENT ? 0 : err;
+	return -EOPNOTSUPP;
 }
 
 static int dsa_slave_port_fdb_add(struct net_device *dev,
-- 
2.7.1