From patchwork Wed Nov 4 16:57:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ioana Ciornei X-Patchwork-Id: 1394352 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=VVYHkG+R; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CRCWm5KSqz9sT6 for ; Thu, 5 Nov 2020 03:57:56 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731860AbgKDQ54 (ORCPT ); Wed, 4 Nov 2020 11:57:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731737AbgKDQ5m (ORCPT ); Wed, 4 Nov 2020 11:57:42 -0500 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 68B41C0613D3; Wed, 4 Nov 2020 08:57:41 -0800 (PST) Received: by mail-ed1-x532.google.com with SMTP id o18so23223174edq.4; Wed, 04 Nov 2020 08:57:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=o9FF9knZ/AggymzgxAUUP5RVqKNvcccbw6oC4UAV1qA=; b=VVYHkG+R6ftkEAWlKpME0l9FaKfC0FsYNBeWc5UtF+LI9Srv7fg33+osciTSkxQICP vdU4RrzMEGTTcWfWEeq2CDjj16+s0biMairmrtryva5jBFIsJuHQr9VTgUZpGC0K3Hw9 is5nzXaAIIBux8votMt4HAY7XXupFQY4jMN8DQ4YswMRjUs/QfFYcPfWj530YXmbIkQl mj5eZDGAlewGwiuXBG0TxsHj6XSBC9NJtM1S57PE0h7lc7SN5/dDCVsJKMxFlYPGX09O S/b9GI8j0TrmEuwF7jbhxNMIqn5xSfut5PwYfWAp/QHTcCWYJlZGAL9pOoynq0k2JlHa Mjsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=o9FF9knZ/AggymzgxAUUP5RVqKNvcccbw6oC4UAV1qA=; b=jaesq2xTcnCZIh1QY5F86+AfAqjlACcQkBqC2KVprShfY7q8PUHaaOEErw46m0cKpN jGN/z4MYrUR8VQkoc302NPUKDPURL+tqRjtQP3ircqRE7qEONC27R5YULWpT1J9xeFAf v+Jv2A4UFZ5O0JDPtGUqhajN7f4ZGkpW2CnK3aVFT5JN6C9fxcDpcZ03kJM0Z5kWEnLv V+T1cRtTImcJ8peY18mbmoiX0uLJ5SjxmSMMa/arcUnMB0bbmYYz1UIV0EnYOGwEL+Dm ZmQVUsNFxoAYSWL+OV8FsR50v2HkSu8IxKyV6xbSpIxVoma8iU4OOND2kkbAJKPOmzUe namA== X-Gm-Message-State: AOAM531dEcsqoEGPhYzJbed23bWhDag9ZeNxgC2Q/avvu7TISlQ75Pvy XFkyP4OW6SB0ukgpuJVS+XpOfS7OQUvVfA== X-Google-Smtp-Source: ABdhPJy4FInzJrbBWst/EwXhpAc2yvY3C1dS/ppDLQ1IuTJE/zoAAQAPwNH9sHfr4RMuNHncCWHzxQ== X-Received: by 2002:aa7:c955:: with SMTP id h21mr28375473edt.315.1604509059994; Wed, 04 Nov 2020 08:57:39 -0800 (PST) Received: from yoga-910.localhost ([188.25.2.177]) by smtp.gmail.com with ESMTPSA id l12sm1354748edt.46.2020.11.04.08.57.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 08:57:39 -0800 (PST) From: Ioana Ciornei To: Greg Kroah-Hartman , Andrew Lunn Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Ioana Ciornei Subject: [RFC 9/9] staging: dpaa2-switch: accept only vlan-aware upper devices Date: Wed, 4 Nov 2020 18:57:20 +0200 Message-Id: <20201104165720.2566399-10-ciorneiioana@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201104165720.2566399-1-ciorneiioana@gmail.com> References: <20201104165720.2566399-1-ciorneiioana@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ioana Ciornei The DPAA2 Switch is not capable to handle traffic in a VLAN unaware fashion, thus the previous handling of both the accepted upper devices and the SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING flag was wrong. Fix this by checking if the bridge that we are joining is indeed VLAN aware, if not return an error. Also, the RX VLAN filtering feature is defined as 'on [fixed]' and the .ndo_vlan_rx_add_vid() and .ndo_vlan_rx_kill_vid() callbacks are implemented just by recreating a switchdev_obj_port_vlan object and then calling the same functions used on the switchdev notifier path. In addition, changing the vlan_filtering flag to 0 on a bridge under which a DPAA2 switch interface is present is not supported, thus rejected when SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING is received with such a request. Signed-off-by: Ioana Ciornei --- drivers/staging/fsl-dpaa2/Kconfig | 1 + drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 80 ++++++++++++++++++++++--- drivers/staging/fsl-dpaa2/ethsw/ethsw.h | 7 +++ 3 files changed, 79 insertions(+), 9 deletions(-) diff --git a/drivers/staging/fsl-dpaa2/Kconfig b/drivers/staging/fsl-dpaa2/Kconfig index 244237bb068a..7cb005b6e7ab 100644 --- a/drivers/staging/fsl-dpaa2/Kconfig +++ b/drivers/staging/fsl-dpaa2/Kconfig @@ -12,6 +12,7 @@ config FSL_DPAA2 config FSL_DPAA2_ETHSW tristate "Freescale DPAA2 Ethernet Switch" + depends on BRIDGE || BRIDGE=n depends on FSL_DPAA2 depends on NET_SWITCHDEV help diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c index 7a0d9a178cdc..4327c432a39f 100644 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c @@ -814,6 +814,50 @@ static int dpaa2_switch_port_fdb_dump(struct sk_buff *skb, struct netlink_callba return err; } +static int dpaa2_switch_port_vlan_add(struct net_device *netdev, __be16 proto, + u16 vid) +{ + struct switchdev_obj_port_vlan vlan = { + .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, + .vid_begin = vid, + .vid_end = vid, + /* This API only allows programming tagged, non-PVID VIDs */ + .flags = 0, + }; + struct switchdev_trans trans; + int err; + + trans.ph_prepare = true; + err = dpaa2_switch_port_vlans_add(netdev, &vlan, &trans); + if (err) + return err; + + trans.ph_prepare = false; + err = dpaa2_switch_port_vlans_add(netdev, &vlan, &trans); + if (err) + return err; + + return 0; +} + +static int dpaa2_switch_port_vlan_kill(struct net_device *netdev, __be16 proto, + u16 vid) +{ + struct switchdev_obj_port_vlan vlan = { + .vid_begin = vid, + .vid_end = vid, + /* This API only allows programming tagged, non-PVID VIDs */ + .flags = 0, + }; + int err; + + err = dpaa2_switch_port_vlans_del(netdev, &vlan); + if (err) + return err; + + return 0; +} + static int dpaa2_switch_port_set_mac_addr(struct ethsw_port_priv *port_priv) { struct ethsw_core *ethsw = port_priv->ethsw_data; @@ -996,6 +1040,8 @@ static const struct net_device_ops dpaa2_switch_port_ops = { .ndo_fdb_add = dpaa2_switch_port_fdb_add, .ndo_fdb_del = dpaa2_switch_port_fdb_del, .ndo_fdb_dump = dpaa2_switch_port_fdb_dump, + .ndo_vlan_rx_add_vid = dpaa2_switch_port_vlan_add, + .ndo_vlan_rx_kill_vid = dpaa2_switch_port_vlan_kill, .ndo_start_xmit = dpaa2_switch_port_tx, .ndo_get_port_parent_id = dpaa2_switch_port_parent_id, @@ -1195,7 +1241,8 @@ static int dpaa2_switch_port_attr_set(struct net_device *netdev, attr->u.brport_flags); break; case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: - /* VLANs are supported by default */ + if (!attr->u.vlan_filtering) + return -EOPNOTSUPP; break; default: err = -EOPNOTSUPP; @@ -1205,9 +1252,9 @@ static int dpaa2_switch_port_attr_set(struct net_device *netdev, return err; } -static int dpaa2_switch_port_vlans_add(struct net_device *netdev, - const struct switchdev_obj_port_vlan *vlan, - struct switchdev_trans *trans) +int dpaa2_switch_port_vlans_add(struct net_device *netdev, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans) { struct ethsw_port_priv *port_priv = netdev_priv(netdev); struct ethsw_core *ethsw = port_priv->ethsw_data; @@ -1375,13 +1422,13 @@ static int dpaa2_switch_port_del_vlan(struct ethsw_port_priv *port_priv, u16 vid return 0; } -static int dpaa2_switch_port_vlans_del(struct net_device *netdev, - const struct switchdev_obj_port_vlan *vlan) +int dpaa2_switch_port_vlans_del(struct net_device *netdev, + const struct switchdev_obj_port_vlan *vlan) { struct ethsw_port_priv *port_priv = netdev_priv(netdev); int vid, err = 0; - if (netif_is_bridge_master(vlan->obj.orig_dev)) + if (vlan->obj.orig_dev && netif_is_bridge_master(vlan->obj.orig_dev)) return -EOPNOTSUPP; for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { @@ -1575,14 +1622,23 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, { struct net_device *netdev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_changeupper_info *info = ptr; + struct netlink_ext_ack *extack; struct net_device *upper_dev; int err = 0; if (!dpaa2_switch_port_dev_check(netdev, nb)) return NOTIFY_DONE; - /* Handle just upper dev link/unlink for the moment */ - if (event == NETDEV_CHANGEUPPER) { + extack = netdev_notifier_info_to_extack(&info->info); + switch (event) { + case NETDEV_PRECHANGEUPPER: + upper_dev = info->upper_dev; + if (netif_is_bridge_master(upper_dev) && !br_vlan_enabled(upper_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Cannot join a vlan-unaware bridge"); + err = -EOPNOTSUPP; + } + break; + case NETDEV_CHANGEUPPER: upper_dev = info->upper_dev; if (netif_is_bridge_master(upper_dev)) { if (info->linking) @@ -1590,6 +1646,7 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, else err = dpaa2_switch_port_bridge_leave(netdev); } + break; } return notifier_from_errno(err); @@ -2646,6 +2703,11 @@ static int dpaa2_switch_probe_port(struct ethsw_core *ethsw, port_netdev->min_mtu = ETH_MIN_MTU; port_netdev->max_mtu = ETHSW_MAX_FRAME_LENGTH; + /* The DPAA2 Switch's ingress path depends on the VLAN table, + * thus we are not able to disable VLAN filtering. + */ + port_netdev->features = NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER; + err = dpaa2_switch_port_init(port_priv, port_idx); if (err) goto err_port_probe; diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h index f905acd18c67..3163dd2ab2ab 100644 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h @@ -143,4 +143,11 @@ static inline bool dpaa2_switch_has_ctrl_if(struct ethsw_core *ethsw) bool dpaa2_switch_port_dev_check(const struct net_device *netdev, struct notifier_block *nb); +int dpaa2_switch_port_vlans_add(struct net_device *netdev, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans); + +int dpaa2_switch_port_vlans_del(struct net_device *netdev, + const struct switchdev_obj_port_vlan *vlan); + #endif /* __ETHSW_H */