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Commit 996ecb82 authored by Vivien Didelot's avatar Vivien Didelot Committed by David S. Miller
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net: dsa: mv88e6xxx: enable SA learning on DSA ports 



In multi-chip systems, DSA Tag ports must learn SA addresses in order to
correctly switch frames between interconnected chips.

This fixes cross-chip hardware bridging in a VLAN filtering aware
system, because a bridge group gets implemented as an hardware 802.1Q
VLAN and thus DSA and user ports share the same FDB.

Fixes: 4c7ea3c0 ("net: dsa: mv88e6xxx: disable SA learning for DSA and CPU ports")
Signed-off-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 65fa4027

drivers/net/dsa/mv88e6xxx.c

+2 −2
Original line number Diff line number Diff line
@@ -2476,8 +2476,8 @@ static int mv88e6xxx_setup_port(struct dsa_switch *ds, int port) 
	 * the other bits clear.

	 */

	reg = 1 << port;

	/* Disable learning for DSA and CPU ports */

	if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))

	/* Disable learning for CPU port */

	if (dsa_is_cpu_port(ds, port))

		reg = 0;



	ret = _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_ASSOC_VECTOR, reg);