diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2020-05-12 20:20:26 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-12 13:08:07 -0700 |
| commit | 1f66b0f0aec671f8fbc86d75b2efdf7c7e0f7880 (patch) | |
| tree | 391a0b292f8a28f898f4e43ac7cd90a32a1677ff /net | |
| parent | 54a0ed0df49609f4e3f098f8943e38e389dc2e15 (diff) | |
net: dsa: tag_8021q: introduce a vid_is_dsa_8021q helper
This function returns a boolean denoting whether the VLAN passed as
argument is part of the 1024-3071 range that the dsa_8021q tagging
scheme uses.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dsa/tag_8021q.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c index ff9c5bf64bda..4774ecd1f8fc 100644 --- a/net/dsa/tag_8021q.c +++ b/net/dsa/tag_8021q.c @@ -93,6 +93,13 @@ int dsa_8021q_rx_source_port(u16 vid) } EXPORT_SYMBOL_GPL(dsa_8021q_rx_source_port); +bool vid_is_dsa_8021q(u16 vid) +{ + return ((vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_RX || + (vid & DSA_8021Q_DIR_MASK) == DSA_8021Q_DIR_TX); +} +EXPORT_SYMBOL_GPL(vid_is_dsa_8021q); + static int dsa_8021q_restore_pvid(struct dsa_switch *ds, int port) { struct bridge_vlan_info vinfo; |