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path: root/drivers/net/mlx4/port.c
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Diffstat (limited to 'drivers/net/mlx4/port.c')
-rw-r--r--drivers/net/mlx4/port.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
index 606aa58..56371ef 100644
--- a/drivers/net/mlx4/port.c
+++ b/drivers/net/mlx4/port.c
@@ -182,6 +182,25 @@ static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
return err;
}
+int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
+{
+ struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+ int i;
+
+ for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
+ if (table->refs[i] &&
+ (vid == (MLX4_VLAN_MASK &
+ be32_to_cpu(table->entries[i])))) {
+ /* VLAN already registered, increase reference count */
+ *idx = i;
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
+
int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
{
struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
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