Re: [PATCH] include: net: add dsa_cpu_ports function

In preparation for the future when dsa will support multi cpu port,
dsa_cpu_ports can be useful for switch that has multiple cpu port to
retrieve the cpu mask for ACL and bridge table.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
 include/net/dsa.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 83a933e563fe..d71b1acd9c3e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h

@@ -446,6 +446,18 @@ static inline u32 dsa_user_ports(struct dsa_switch *ds)
 	return mask;
 }
 
+static inline u32 dsa_cpu_ports(struct dsa_switch *ds)
+{
+	u32 mask = 0;
+	int p;
+
+	for (p = 0; p < ds->num_ports; p++)
+		if (dsa_is_cpu_port(ds, p))
+			mask |= BIT(p);
+
+	return mask;
+}