From: Vladimir Oltean <vladimir.olt...@nxp.com>
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.olt...@nxp.com>
---
Changes in v2:
None.
include/linux/dsa/8021q.h | 7 +++++++
net/dsa/tag_8021q.c | 7 +++++++
2 files changed, 14 insertions(+)
diff --git a/include/linux/dsa/8021q.h b/include/linux/dsa/8021q.h
index b8daaec0896e..ebc245ff838a 100644
--- a/include/linux/dsa/8021q.h
+++ b/include/linux/dsa/8021q.h
@@ -50,6 +50,8 @@ int dsa_8021q_rx_switch_id(u16 vid);
int dsa_8021q_rx_source_port(u16 vid);
+bool vid_is_dsa_8021q(u16 vid);
+
#else
int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int index,
@@ -107,6 +109,11 @@ int dsa_8021q_rx_source_port(u16 vid)
return 0;
}
+bool vid_is_dsa_8021q(u16 vid)
+{
+ return false;
+}
+
#endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */
#endif /* _NET_DSA_8021Q_H */
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;
--
2.17.1
