From patchwork Tue Jun 4 11:44:02 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: 13685091 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 59066C41513 for ; Tue, 4 Jun 2024 11:44:31 +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=hU0E0XrlEcLjK1aePx5s3W11AX4euq+t4GRrvg/wMqk=; b=2P6iVV0/5hMElh WfY8BGdNEnpQid7ObMMYaXBme1KwCyN/qSq8YFhjGb2X7eu8hFQRWcI7HiAR4Qn9NM+ZJqafCidUi Zp82jRGnIwnyB8Rl6DtT8RVFFEO8E/EM6a/+R+qvhrfDG8L2uHIJ0K/8X5VgB/igx1KksKisKmoy4 BRG+F1TLLWb0BeaCqVzIvOOPbHnui8a3hF6DMTMRkpahAYMI4IC9lv31PavEBbiT4ZWJUtdfroz6H WtVNmU/4nh9ip6ONfIAcovD76ysBXnAoKpVNmxMSqsxhjufBaEIO09ajwH0YPzQkT2eeKli5tkfng pJ4XLwx6bcKzFCk7G76g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sESaR-00000002AI1-10y0; Tue, 04 Jun 2024 11:44:19 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sESaL-00000002AHT-08Jh for linux-arm-kernel@lists.infradead.org; Tue, 04 Jun 2024 11:44:17 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 454Bi6b1114677; Tue, 4 Jun 2024 06:44:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1717501446; bh=8cMYbVxYDA4UBQAYxdo5KK8U6XsBARlMjGQd9dkeC4s=; h=From:To:CC:Subject:Date; b=csPMHLCEacoiDxjqLULAAlKqzuCg/522SoCIv113shrieSNlPLoylT3cr2zUHEnck zmAfHRRLBVA51P04X6kdyUrjuvxw7yi8TRolAfy9c5fMt2ddwJRT0EDnxH7J9T6NnV DYsIZV9o2bJQTpXHw2MQRba/34AUKA3sCP65tNx0= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 454Bi635089587 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 4 Jun 2024 06:44:06 -0500 Received: from DLEE111.ent.ti.com (157.170.170.22) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 4 Jun 2024 06:44:06 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE111.ent.ti.com (157.170.170.22) 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; Tue, 4 Jun 2024 06:44:06 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 454Bi6eX017524; Tue, 4 Jun 2024 06:44:06 -0500 Received: from localhost (danish-tpc.dhcp.ti.com [10.24.69.25]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 454Bi50k003940; Tue, 4 Jun 2024 06:44:05 -0500 From: MD Danish Anwar To: Dan Carpenter , Jan Kiszka , Diogo Ivo , Andrew Lunn , Paolo Abeni , Simon Horman CC: , , , , Vignesh Raghavendra , Roger Quadros , MD Danish Anwar Subject: [PATCH net-next v2] net: ti: icssg-prueth: Add multicast filtering support Date: Tue, 4 Jun 2024 17:14:02 +0530 Message-ID: <20240604114402.1835973-1-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-20240604_044413_345137_7B9484F3 X-CRM114-Status: GOOD ( 21.82 ) 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. The driver will keep a copy of multicast addresses in emac->mcast_list. This list will be kept in sync with the netdev list and to add / del multicast address icssg_prueth_mac_add_mcast / icssg_prueth_mac_del_mcast APIs will be called. To add a mac_address for a port, driver need 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_mac_add_mcast / icssg_prueth_mac_del_mcast APIs. Signed-off-by: MD Danish Anwar --- 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/ drivers/net/ethernet/ti/icssg/icssg_prueth.c | 50 ++++++++++++++++++-- drivers/net/ethernet/ti/icssg/icssg_prueth.h | 3 ++ 2 files changed, 49 insertions(+), 4 deletions(-) base-commit: 2589d668e1a6ebe85329f1054cdad13647deac06 diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 6e65aa0977d4..03dd49f0afb7 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_mac_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_mac_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 @@ -547,6 +578,8 @@ static int emac_ndo_open(struct net_device *ndev) prueth->emacs_initialized++; + __hw_addr_init(&emac->mcast_list); + queue_work(system_long_wq, &emac->stats_work.work); return 0; @@ -599,6 +632,9 @@ 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_mac_del_mcast); + __hw_addr_init(&emac->mcast_list); + atomic_set(&emac->tdown_cnt, emac->tx_ch_num); /* ensure new tdown_cnt value is visible */ smp_mb__after_atomic(); @@ -675,10 +711,15 @@ 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; - } + /* make a mc list copy */ + + netif_addr_lock_bh(ndev); + __hw_addr_sync(&emac->mcast_list, &ndev->mc, ndev->addr_len); + netif_addr_unlock_bh(ndev); + + __hw_addr_sync_dev(&emac->mcast_list, ndev, + icssg_prueth_mac_add_mcast, + icssg_prueth_mac_del_mcast); } /** @@ -767,6 +808,7 @@ static int prueth_netdev_init(struct prueth *prueth, SET_NETDEV_DEV(ndev, prueth->dev); spin_lock_init(&emac->lock); mutex_init(&emac->cmd_lock); + __hw_addr_init(&emac->mcast_list); emac->phy_node = of_parse_phandle(eth_node, "phy-handle", 0); if (!emac->phy_node && !of_phy_is_fixed_link(eth_node)) { diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h index 5eeeccb73665..2bfda26b5901 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -155,6 +155,9 @@ struct prueth_emac { unsigned int tx_ts_enabled : 1; unsigned int half_duplex : 1; + /* List for storing multicast addresses */ + struct netdev_hw_addr_list mcast_list; + /* DMA related */ struct prueth_tx_chn tx_chns[PRUETH_MAX_TX_QUEUES]; struct completion tdown_complete;