From patchwork Wed Jun 5 09:52:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13686531 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6368AC27C52 for ; Wed, 5 Jun 2024 09:52:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Wf+XTPMpU0DKKwS35BoEmT/7OZIiYWfkpN11cG6mrqo=; b=NRyoTGdklHF4w1 w2QzYm57zB76/bgC9xQdJMD3jxpUpz2cOpgSchlhN6rZtR7Ai9pQIkQBaSeYGX1V1EjzwrVemfOZo x/DD7dotawugspjo0c3KhRD/ZtXmS7cyU4U0hvcjfJb3hv+jl1nEukTQytltjBwqpqWFYjVwi7mr5 vVYnxln91VQbsJCE3zipD+t/PsaSh3R4YeV2M2Dinb+BsU8X5N0GlE5+D7iisPGGKrJwM6mvPdDOs eet8FrSZoPNzFAnEjl1CNFngyFH7Lpkc7OZIMtaDHGmZndw2VCOpNS1iRdIXKk+Wx48jlFrZERKJ1 /qY9bsDtHvYpKUm4KEOQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEnK1-00000005UVA-3vEX; Wed, 05 Jun 2024 09:52:45 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sEnJz-00000005UU5-1wmd for linux-arm-kernel@lists.infradead.org; Wed, 05 Jun 2024 09:52:45 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 4559qRcc088771; Wed, 5 Jun 2024 04:52:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1717581147; bh=Lu9R3HFjqY+joNvpPu5u8Mxhs9oQxQ+UkNosv0uJ7MQ=; h=From:To:CC:Subject:Date; b=wCABgHQVPsy3QQ29+qc+Y1qhzRIREdqRaH4ZfUOSzn+UdOIZ1XvFHU3p7FUn3mkr9 VS+suMSB4w5mwDJwX5C0RC2MytpZLHLaW8v+wcSXH7ZNvs7XYK9LR0UfE1CihDfV6H qcO5lxRVZ0mbEWFf5P4zaNSb9bdb+nfQdTgC2i/A= Received: from DFLE112.ent.ti.com (dfle112.ent.ti.com [10.64.6.33]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 4559qRfU017863 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 5 Jun 2024 04:52:27 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Wed, 5 Jun 2024 04:52:27 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Wed, 5 Jun 2024 04:52:26 -0500 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 4559qQAg046363; Wed, 5 Jun 2024 04:52:26 -0500 Received: from localhost (danish-tpc.dhcp.ti.com [10.24.69.25]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 4559qPmu012064; Wed, 5 Jun 2024 04:52:26 -0500 From: MD Danish Anwar To: Dan Carpenter , Jan Kiszka , Diogo Ivo , Andrew Lunn , Simon Horman , Paolo Abeni , Jakub Kicinski , Eric Dumazet , "David S. Miller" CC: , , , , Vignesh Raghavendra , Roger Quadros , MD Danish Anwar , Wojciech Drewek Subject: [PATCH net-next v3] net: ti: icssg-prueth: Add multicast filtering support Date: Wed, 5 Jun 2024 15:22:23 +0530 Message-ID: <20240605095223.2556963-1-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240605_025243_630508_A7A12A96 X-CRM114-Status: GOOD ( 17.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add multicast filtering support for ICSSG Driver. Multicast addresses will be updated by __dev_mc_sync() API. icssg_prueth_add_macst () and icssg_prueth_del_mcast() will be sync and unsync APIs for the driver respectively. To add a mac_address for a port, driver needs to call icssg_fdb_add_del() and pass the mac_address and BIT(port_id) to the API. The ICSSG firmware will then configure the rules and allow filtering. If a mac_address is added to port0 and the same mac_address needs to be added for port1, driver needs to pass BIT(port0) | BIT(port1) to the icssg_fdb_add_del() API. If driver just pass BIT(port1) then the entry for port0 will be overwritten / lost. This is a design constraint on the firmware side. To overcome this in the driver, to add any mac_address for let's say portX driver first checks if the same mac_address is already added for any other port. If yes driver calls icssg_fdb_add_del() with BIT(portX) | BIT(other_existing_port). If not, driver calls icssg_fdb_add_del() with BIT(portX). The same thing is applicable for deleting mac_addresses as well. This logic is in icssg_prueth_add_mcast / icssg_prueth_del_mcast APIs. Signed-off-by: MD Danish Anwar Reviewed-by: Wojciech Drewek --- Cc: Wojciech Drewek v2 -> v3: *) Using __dev_mc_sync() instead of __hw_addr_sync_dev(). *) Stopped keeping local copy of multicast list as pointed out by Wojciech Drewek v1 -> v2: *) Rebased on latest net-next/main. NOTE: This series can be applied cleanly on the tip of net-next/main. This series doesn't depend on any other ICSSG driver related series that is floating around in netdev. v1 https://lore.kernel.org/all/20240516091752.2969092-1-danishanwar@ti.com/ v2 https://lore.kernel.org/all/20240604114402.1835973-1-danishanwar@ti.com/ drivers/net/ethernet/ti/icssg/icssg_prueth.c | 38 +++++++++++++++++--- 1 file changed, 34 insertions(+), 4 deletions(-) base-commit: fd70f0443e24c3888bf4b7f198df6d705c9b8ab2 diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 6e65aa0977d4..e13835100754 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -439,6 +439,37 @@ const struct icss_iep_clockops prueth_iep_clockops = { .perout_enable = prueth_perout_enable, }; +static int icssg_prueth_add_mcast(struct net_device *ndev, const u8 *addr) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int port_mask = BIT(emac->port_id); + + port_mask |= icssg_fdb_lookup(emac, addr, 0); + icssg_fdb_add_del(emac, addr, 0, port_mask, true); + icssg_vtbl_modify(emac, 0, port_mask, port_mask, true); + + return 0; +} + +static int icssg_prueth_del_mcast(struct net_device *ndev, const u8 *addr) +{ + struct prueth_emac *emac = netdev_priv(ndev); + int port_mask = BIT(emac->port_id); + int other_port_mask; + + other_port_mask = port_mask ^ icssg_fdb_lookup(emac, addr, 0); + + icssg_fdb_add_del(emac, addr, 0, port_mask, false); + icssg_vtbl_modify(emac, 0, port_mask, port_mask, false); + + if (other_port_mask) { + icssg_fdb_add_del(emac, addr, 0, other_port_mask, true); + icssg_vtbl_modify(emac, 0, other_port_mask, other_port_mask, true); + } + + return 0; +} + /** * emac_ndo_open - EMAC device open * @ndev: network adapter device @@ -599,6 +630,8 @@ static int emac_ndo_stop(struct net_device *ndev) icssg_class_disable(prueth->miig_rt, prueth_emac_slice(emac)); + __dev_mc_unsync(ndev, icssg_prueth_del_mcast); + atomic_set(&emac->tdown_cnt, emac->tx_ch_num); /* ensure new tdown_cnt value is visible */ smp_mb__after_atomic(); @@ -675,10 +708,7 @@ static void emac_ndo_set_rx_mode_work(struct work_struct *work) return; } - if (!netdev_mc_empty(ndev)) { - emac_set_port_state(emac, ICSSG_EMAC_PORT_MC_FLOODING_ENABLE); - return; - } + __dev_mc_sync(ndev, icssg_prueth_add_mcast, icssg_prueth_del_mcast); } /**