Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752766AbdLDRh0 (ORCPT ); Mon, 4 Dec 2017 12:37:26 -0500 Received: from mail.savoirfairelinux.com ([208.88.110.44]:45220 "EHLO mail.savoirfairelinux.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752065AbdLDRfp (ORCPT ); Mon, 4 Dec 2017 12:35:45 -0500 From: Vivien Didelot To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel@savoirfairelinux.com, "David S. Miller" , Florian Fainelli , Andrew Lunn , Vivien Didelot Subject: [PATCH net-next 1/5] net: dsa: mv88e6xxx: egress floods all DSA ports Date: Mon, 4 Dec 2017 12:34:53 -0500 Message-Id: <20171204173457.14873-2-vivien.didelot@savoirfairelinux.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171204173457.14873-1-vivien.didelot@savoirfairelinux.com> References: <20171204173457.14873-1-vivien.didelot@savoirfairelinux.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1423 Lines: 35 The mv88e6xxx driver currently assumes a single CPU port in the fabric and thus floods frames with unknown DA on a single DSA port, the one that is one hop closer to the CPU port. With multiple CPU ports in mind, this isn't true anymore because CPU ports could be found behind both DSA ports of a device in-between others. For example in a A <-> B <-> C fabric, both A and C having CPU ports, device B will have to flood such frame to its two DSA ports. This patch considers both CPU and DSA ports of a device as upstream ports, where to flood frames with unknown DA addresses. Signed-off-by: Vivien Didelot --- drivers/net/dsa/mv88e6xxx/chip.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index b5e0987c88f0..15475dbb738b 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -1723,7 +1723,8 @@ static int mv88e6xxx_setup_message_port(struct mv88e6xxx_chip *chip, int port) static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port) { - bool flood = port == dsa_upstream_port(chip->ds); + struct dsa_switch *ds = chip->ds; + bool flood = dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port); /* Upstream ports flood frames with unknown unicast or multicast DA */ if (chip->info->ops->port_set_egress_floods) -- 2.15.1