From nobody Fri Dec 19 19:17:14 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC62CC83F10 for ; Thu, 31 Aug 2023 11:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244314AbjHaLTF (ORCPT ); Thu, 31 Aug 2023 07:19:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242946AbjHaLS5 (ORCPT ); Thu, 31 Aug 2023 07:18:57 -0400 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7441ACE4; Thu, 31 Aug 2023 04:18:54 -0700 (PDT) Received: from localhost.localdomain (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: lukma@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 3097686572; Thu, 31 Aug 2023 13:18:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1693480732; bh=Oh6+2Og4JNes230QX3F+ylAvYwPth7/wlwN9Q1c/94U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FmMSDZ9mZ5CFNV1LNupGDeIr3YAF85e+bEV0ZY3P1NeODZBIm0gZP9bzOiZFqtQ+d HvoSSpTejq/HCXFbaS+lPeAJVDGlZH/95/8fW5yCvJ3m6/23a5B0QEDJzqKors/s0d JTBooF2BVyLe5LIKpfgXxNwaM2dEAt7LoKUxamkRYHud7XTEO4z57abV/z3l+6HLj0 qgRk91XE4zP2ONkiw/aRCILwcXKmc0ytdoPwhOpKNFVObBxCsfxrSqC7+3xGvMqSG4 sRVaUqPxzHgMmmyF903HDxviVI/2O28P9KdE/71K43GvI6SmP8SKUvk5qvetDqLbg6 RGcFLDQs4Jtvw== From: Lukasz Majewski To: Eric Dumazet , Andrew Lunn , davem@davemloft.net, Paolo Abeni , Woojung Huh , Vladimir Oltean Cc: Tristram.Ha@microchip.com, Florian Fainelli , Jakub Kicinski , UNGLinuxDriver@microchip.com, George McCollister , Oleksij Rempel , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Lukasz Majewski Subject: [PATCH v2 4/4] net: dsa: hsr: Provide generic HSR ksz_hsr_{join|leave} functions Date: Thu, 31 Aug 2023 13:18:27 +0200 Message-Id: <20230831111827.548118-5-lukma@denx.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230831111827.548118-1-lukma@denx.de> References: <20230831111827.548118-1-lukma@denx.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch provides the common KSZ (i.e. Microchip) DSA code with support for HSR aware devices. To be more specific - generic ksz_hsr_{join|leave} functions are provided, now only supporting KSZ9477 IC. Signed-off-by: Lukasz Majewski --- Changes for v2: - None --- drivers/net/dsa/microchip/ksz_common.c | 69 ++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/micro= chip/ksz_common.c index 579fde54d1e1..853f9fe60758 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -3433,6 +3434,72 @@ u16 ksz_hsr_get_ports(struct dsa_switch *ds) return 0; } =20 +static int ksz_hsr_join(struct dsa_switch *ds, int port, struct net_device= *hsr) +{ + struct dsa_port *partner =3D NULL, *dp; + struct ksz_device *dev =3D ds->priv; + enum hsr_version ver; + int ret; + + ret =3D hsr_get_version(hsr, &ver); + if (ret) + return ret; + + switch (dev->chip_id) { + case KSZ9477_CHIP_ID: + if (ver =3D=3D PRP_V1) + return -EOPNOTSUPP; + } + + /* We can't enable redundancy on the switch until both + * redundant ports have signed up. + */ + dsa_hsr_foreach_port(dp, ds, hsr) { + if (dp->index !=3D port) { + partner =3D dp; + break; + } + } + + if (!partner) + return 0; + + switch (dev->chip_id) { + case KSZ9477_CHIP_ID: + return ksz9477_hsr_join(ds, port, hsr, partner); + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static int ksz_hsr_leave(struct dsa_switch *ds, int port, + struct net_device *hsr) +{ + struct dsa_port *partner =3D NULL, *dp; + struct ksz_device *dev =3D ds->priv; + + dsa_hsr_foreach_port(dp, ds, hsr) { + if (dp->index !=3D port) { + partner =3D dp; + break; + } + } + + if (!partner) + return 0; + + switch (dev->chip_id) { + case KSZ9477_CHIP_ID: + return ksz9477_hsr_leave(ds, port, hsr, partner); + default: + return -EOPNOTSUPP; + } + + return 0; +} + static const struct dsa_switch_ops ksz_switch_ops =3D { .get_tag_protocol =3D ksz_get_tag_protocol, .connect_tag_protocol =3D ksz_connect_tag_protocol, @@ -3452,6 +3519,8 @@ static const struct dsa_switch_ops ksz_switch_ops =3D= { .get_sset_count =3D ksz_sset_count, .port_bridge_join =3D ksz_port_bridge_join, .port_bridge_leave =3D ksz_port_bridge_leave, + .port_hsr_join =3D ksz_hsr_join, + .port_hsr_leave =3D ksz_hsr_leave, .port_stp_state_set =3D ksz_port_stp_state_set, .port_pre_bridge_flags =3D ksz_port_pre_bridge_flags, .port_bridge_flags =3D ksz_port_bridge_flags, --=20 2.20.1