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| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-10-01 19:42:15 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-02 13:36:07 -0700 |
| commit | 3a68844dd2d8b3fd23f92894b6628e02a530b445 (patch) | |
| tree | a75b5229db47acc061133db3c00e7825d32e40f9 /net/dsa | |
| parent | a348292b63156290e72e2df2f724833607d1e403 (diff) | |
| download | linux-3a68844dd2d8b3fd23f92894b6628e02a530b445.tar.bz2 | |
net: dsa: Utilize __vlan_find_dev_deep_rcu()
Now that we are guaranteed that dsa_untag_bridge_pvid() is called after
eth_type_trans() we can utilize __vlan_find_dev_deep_rcu() which will
take care of finding an 802.1Q upper on top of a bridge master.
A common use case, prior to 12a1526d067 ("net: dsa: untag the bridge
pvid from rx skbs") was to configure a bridge 802.1Q upper like this:
ip link add name br0 type bridge vlan_filtering 0
ip link add link br0 name br0.1 type vlan id 1
in order to pop the default_pvid VLAN tag.
With this change we restore that behavior while still allowing the DSA
receive path to automatically pop the VLAN tag.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa_priv.h | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index d6ce8c2a2590..12998bf04e55 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -204,7 +204,6 @@ static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb) struct net_device *br = dp->bridge_dev; struct net_device *dev = skb->dev; struct net_device *upper_dev; - struct list_head *iter; u16 vid, pvid, proto; int err; @@ -246,13 +245,9 @@ static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb) * supports because vlan_filtering is 0. In that case, we should * definitely keep the tag, to make sure it keeps working. */ - netdev_for_each_upper_dev_rcu(dev, upper_dev, iter) { - if (!is_vlan_dev(upper_dev)) - continue; - - if (vid == vlan_dev_vlan_id(upper_dev)) - return skb; - } + upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid); + if (upper_dev) + return skb; __vlan_hwaccel_clear_tag(skb); |