From ed409f3bbaa5632b8316f7596dec227814811620 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Wed, 23 Sep 2020 14:40:38 -0700 Subject: 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: Vladimir Oltean Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- net/dsa/tag_brcm.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'net/dsa') diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c index cc8512b5f9e2..1dab212a294f 100644 --- a/net/dsa/tag_brcm.c +++ b/net/dsa/tag_brcm.c @@ -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 = { -- cgit v1.2.3