From patchwork Mon May 31 13:12:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 450915 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62E49C47082 for ; Mon, 31 May 2021 14:42:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 44FA6611CB for ; Mon, 31 May 2021 14:42:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233916AbhEaOnv (ORCPT ); Mon, 31 May 2021 10:43:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:36602 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233931AbhEaOlj (ORCPT ); Mon, 31 May 2021 10:41:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8227561C6F; Mon, 31 May 2021 13:53:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622469238; bh=jrNyUQdsLwdFiKJ8N70AkCqBLjOaUTTCkpzLOsHH5g0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZMIN6cf0hpK6XOqpQYv8xPvobVTVTCMTuf9dMakY1eRrkD5bTTU6wGv4E6JCpnZyc YgaXFxhE257aQZRgR5fcfZa5RA7H8jAq4dnHfeHdGMGkJ8vW1LOzVpQBg6+aqTnXrM JXKmR+tz2ZUy9CfYUOqnHNG++0EjSQBgvuvF1wAc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, Eli Cohen , Saeed Mahameed Subject: [PATCH 5.12 121/296] {net, vdpa}/mlx5: Configure interface MAC into mpfs L2 table Date: Mon, 31 May 2021 15:12:56 +0200 Message-Id: <20210531130707.977139134@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130703.762129381@linuxfoundation.org> References: <20210531130703.762129381@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Eli Cohen commit 7c9f131f366ab414691907fa0407124ea2b2f3bc upstream. net/mlx5: Expose MPFS configuration API MPFS is the multi physical function switch that bridges traffic between the physical port and any physical functions associated with it. The driver is required to add or remove MAC entries to properly forward incoming traffic to the correct physical function. We export the API to control MPFS so that other drivers, such as mlx5_vdpa are able to add MAC addresses of their network interfaces. The MAC address of the vdpa interface must be configured into the MPFS L2 address. Failing to do so could cause, in some NIC configurations, failure to forward packets to the vdpa network device instance. Fix this by adding calls to update the MPFS table. CC: CC: CC: Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices") Signed-off-by: Eli Cohen Signed-off-by: Saeed Mahameed Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/mellanox/mlx5/core/en_fs.c | 1 + drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 1 + drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.c | 3 +++ drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.h | 5 +---- drivers/vdpa/mlx5/net/mlx5_vnet.c | 19 ++++++++++++++++++- include/linux/mlx5/mpfs.h | 18 ++++++++++++++++++ 6 files changed, 42 insertions(+), 5 deletions(-) create mode 100644 include/linux/mlx5/mpfs.h --- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c @@ -35,6 +35,7 @@ #include #include #include +#include #include "en.h" #include "lib/mpfs.h" --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -35,6 +35,7 @@ #include #include #include +#include #include "esw/acl/lgcy.h" #include "mlx5_core.h" #include "lib/eq.h" --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include "mlx5_core.h" #include "lib/mpfs.h" @@ -175,6 +176,7 @@ out: mutex_unlock(&mpfs->lock); return err; } +EXPORT_SYMBOL(mlx5_mpfs_add_mac); int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac) { @@ -206,3 +208,4 @@ unlock: mutex_unlock(&mpfs->lock); return err; } +EXPORT_SYMBOL(mlx5_mpfs_del_mac); --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/mpfs.h @@ -84,12 +84,9 @@ struct l2addr_node { #ifdef CONFIG_MLX5_MPFS int mlx5_mpfs_init(struct mlx5_core_dev *dev); void mlx5_mpfs_cleanup(struct mlx5_core_dev *dev); -int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac); -int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac); #else /* #ifndef CONFIG_MLX5_MPFS */ static inline int mlx5_mpfs_init(struct mlx5_core_dev *dev) { return 0; } static inline void mlx5_mpfs_cleanup(struct mlx5_core_dev *dev) {} -static inline int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } -static inline int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } #endif + #endif --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -15,6 +15,7 @@ #include #include #include +#include #include "mlx5_vdpa.h" MODULE_AUTHOR("Eli Cohen "); @@ -1854,11 +1855,16 @@ static int mlx5_vdpa_set_map(struct vdpa static void mlx5_vdpa_free(struct vdpa_device *vdev) { struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev); + struct mlx5_core_dev *pfmdev; struct mlx5_vdpa_net *ndev; ndev = to_mlx5_vdpa_ndev(mvdev); free_resources(ndev); + if (!is_zero_ether_addr(ndev->config.mac)) { + pfmdev = pci_get_drvdata(pci_physfn(mvdev->mdev->pdev)); + mlx5_mpfs_del_mac(pfmdev, ndev->config.mac); + } mlx5_vdpa_free_resources(&ndev->mvdev); mutex_destroy(&ndev->reslock); } @@ -1980,6 +1986,7 @@ static int mlx5v_probe(struct auxiliary_ struct mlx5_adev *madev = container_of(adev, struct mlx5_adev, adev); struct mlx5_core_dev *mdev = madev->mdev; struct virtio_net_config *config; + struct mlx5_core_dev *pfmdev; struct mlx5_vdpa_dev *mvdev; struct mlx5_vdpa_net *ndev; u32 max_vqs; @@ -2008,10 +2015,17 @@ static int mlx5v_probe(struct auxiliary_ if (err) goto err_mtu; + if (!is_zero_ether_addr(config->mac)) { + pfmdev = pci_get_drvdata(pci_physfn(mdev->pdev)); + err = mlx5_mpfs_add_mac(pfmdev, config->mac); + if (err) + goto err_mtu; + } + mvdev->vdev.dma_dev = mdev->device; err = mlx5_vdpa_alloc_resources(&ndev->mvdev); if (err) - goto err_mtu; + goto err_mpfs; err = alloc_resources(ndev); if (err) @@ -2028,6 +2042,9 @@ err_reg: free_resources(ndev); err_res: mlx5_vdpa_free_resources(&ndev->mvdev); +err_mpfs: + if (!is_zero_ether_addr(config->mac)) + mlx5_mpfs_del_mac(pfmdev, config->mac); err_mtu: mutex_destroy(&ndev->reslock); put_device(&mvdev->vdev.dev); --- /dev/null +++ b/include/linux/mlx5/mpfs.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB + * Copyright (c) 2021 Mellanox Technologies Ltd. + */ + +#ifndef _MLX5_MPFS_ +#define _MLX5_MPFS_ + +struct mlx5_core_dev; + +#ifdef CONFIG_MLX5_MPFS +int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac); +int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac); +#else /* #ifndef CONFIG_MLX5_MPFS */ +static inline int mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } +static inline int mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u8 *mac) { return 0; } +#endif + +#endif