linux-kernel - [RFC 6/9] net: dsa: mv88e6352: allow egress of unknown multicast

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Date:	Mon,  1 Jun 2015 21:27:47 -0400
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	netdev@...r.kernel.org
Cc:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
	"David S. Miller" <davem@...emloft.net>,
	Guenter Roeck <linux@...ck-us.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	"Scott Feldman" <sfeldma@...il.com>, Jiri Pirko <jiri@...nulli.us>,
	Jerome Oufella <jerome.oufella@...oirfairelinux.com>,
	linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
	"Chris Healy" <cphealy@...il.com>
Subject: [RFC 6/9] net: dsa: mv88e6352: allow egress of unknown multicast

This patch disables egress of unknown unicast destination addresses.

Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
 drivers/net/dsa/mv88e6xxx.c | 3 ++-
 drivers/net/dsa/mv88e6xxx.h | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 49ef2f8..d2beb10 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -1686,7 +1686,8 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port)
 	    mv88e6xxx_6185_family(ds))
 		reg = PORT_CONTROL_IGMP_MLD_SNOOP |
 		PORT_CONTROL_USE_TAG | PORT_CONTROL_USE_IP |
-		PORT_CONTROL_STATE_FORWARDING;
+		PORT_CONTROL_STATE_FORWARDING |
+		PORT_CONTROL_EGRESS_FLOODS_NO_UNKNOWN_UNICAST_DA;
 	if (dsa_is_cpu_port(ds, port)) {
 		if (mv88e6xxx_6095_family(ds) || mv88e6xxx_6185_family(ds))
 			reg |= PORT_CONTROL_DSA_TAG;
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index f4ea66a..412d14e 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -117,6 +117,11 @@
 #define PORT_CONTROL_STATE_BLOCKING	0x01
 #define PORT_CONTROL_STATE_LEARNING	0x02
 #define PORT_CONTROL_STATE_FORWARDING	0x03
+#define PORT_CONTROL_EGRESS_FLOODS_MASK				(0x03 << 2)
+#define PORT_CONTROL_EGRESS_FLOODS_NO_UNKNOWN_ANY_DA		(0x00 << 2)
+#define PORT_CONTROL_EGRESS_FLOODS_NO_UNKNOWN_MULTICAST_DA	(0x01 << 2)
+#define PORT_CONTROL_EGRESS_FLOODS_NO_UNKNOWN_UNICAST_DA	(0x02 << 2)
+#define PORT_CONTROL_EGRESS_FLOODS_ANY_DA			(0x03 << 2)
 #define PORT_CONTROL_1		0x05
 #define PORT_BASE_VLAN		0x06
 #define PORT_DEFAULT_VLAN	0x07
-- 
2.4.1

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