Commit ed409f3b authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
Browse files

net: dsa: b53: Configure VLANs while not filtering 



Update the B53 driver to support VLANs while not filtering. This
requires us to enable VLAN globally within the switch upon driver
initial configuration (dev->vlan_enabled).

We also need to remove the code that dealt with PVID re-configuration in
b53_vlan_filtering() since that function worked under the assumption
that it would only be called to make a bridge VLAN filtering, or not
filtering, and we would attempt to move the port's PVID accordingly.

Now that VLANs are programmed all the time, even in the case of a
non-VLAN filtering bridge, we would be programming a default_pvid for
the bridged switch ports.

We need the DSA receive path to pop the VLAN tag if it is the bridge's
default_pvid because the CPU port is always programmed tagged in the
programmed VLANs. In order to do so we utilize the
dsa_untag_bridge_pvid() helper introduced in the commit before within
net/dsa/tag_brcm.c.

Acked-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 412a1526

drivers/net/dsa/b53/b53_common.c

+2 −17
Original line number Diff line number Diff line
@@ -1377,23 +1377,6 @@ EXPORT_SYMBOL(b53_phylink_mac_link_up); 
int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)

{

	struct b53_device *dev = ds->priv;

	u16 pvid, new_pvid;



	b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);

	if (!vlan_filtering) {

		/* Filtering is currently enabled, use the default PVID since

		 * the bridge does not expect tagging anymore

		 */

		dev->ports[port].pvid = pvid;

		new_pvid = b53_default_pvid(dev);

	} else {

		/* Filtering is currently disabled, restore the previous PVID */

		new_pvid = dev->ports[port].pvid;

	}



	if (pvid != new_pvid)

		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),

			    new_pvid);



	b53_enable_vlan(dev, dev->vlan_enabled, vlan_filtering);
@@ -2619,6 +2602,8 @@ struct b53_device *b53_switch_alloc(struct device *base, 
	dev->priv = priv;

	dev->ops = ops;

	ds->ops = &b53_switch_ops;

	ds->configure_vlan_while_not_filtering = true;

	dev->vlan_enabled = ds->configure_vlan_while_not_filtering;

	mutex_init(&dev->reg_mutex);

	mutex_init(&dev->stats_mutex);

drivers/net/dsa/b53/b53_priv.h

+0 −1
Original line number Diff line number Diff line
@@ -91,7 +91,6 @@ enum { 
struct b53_port {

	u16		vlan_ctl_mask;

	struct ethtool_eee eee;

	u16		pvid;

};



struct b53_vlan {

net/dsa/tag_brcm.c

+13 −2
Original line number Diff line number Diff line
@@ -140,6 +140,11 @@ static struct sk_buff *brcm_tag_rcv_ll(struct sk_buff *skb, 
	/* Remove Broadcom tag and update checksum */

	skb_pull_rcsum(skb, BRCM_TAG_LEN);



	/* Set the MAC header to where it should point for

	 * dsa_untag_bridge_pvid() to parse the correct VLAN header.

	 */

	skb_set_mac_header(skb, -ETH_HLEN);



	skb->offload_fwd_mark = 1;



	return skb;
@@ -191,7 +196,7 @@ static struct sk_buff *brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev, 
		nskb->data - ETH_HLEN - BRCM_TAG_LEN,

		2 * ETH_ALEN);



	return nskb;

	return dsa_untag_bridge_pvid(nskb);

}



static const struct dsa_device_ops brcm_netdev_ops = {
@@ -219,8 +224,14 @@ static struct sk_buff *brcm_tag_rcv_prepend(struct sk_buff *skb, 
					    struct net_device *dev,

					    struct packet_type *pt)

{

	struct sk_buff *nskb;



	/* tag is prepended to the packet */

	return brcm_tag_rcv_ll(skb, dev, pt, ETH_HLEN);

	nskb = brcm_tag_rcv_ll(skb, dev, pt, ETH_HLEN);

	if (!nskb)

		return nskb;



	return dsa_untag_bridge_pvid(nskb);

}



static const struct dsa_device_ops brcm_prepend_netdev_ops = {

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