Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965121AbcJQT6v (ORCPT ); Mon, 17 Oct 2016 15:58:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60366 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755967AbcJQTyb (ORCPT ); Mon, 17 Oct 2016 15:54:31 -0400 From: Jarod Wilson To: linux-kernel@vger.kernel.org Cc: Jarod Wilson , netdev@vger.kernel.org, Tariq Toukan , Saeed Mahameed Subject: [PATCH net-next 05/15] ethernet/mellanox: use core min/max MTU checking Date: Mon, 17 Oct 2016 15:54:07 -0400 Message-Id: <20161017195417.48259-6-jarod@redhat.com> In-Reply-To: <20161017195417.48259-1-jarod@redhat.com> References: <20161017195417.48259-1-jarod@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 17 Oct 2016 19:54:31 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3176 Lines: 97 mlx4: min_mtu 46, max_mtu depends on hardware mlx5: min_mtu 68, max_mtu depends on hardware CC: netdev@vger.kernel.org CC: Tariq Toukan CC: Saeed Mahameed Signed-off-by: Jarod Wilson --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 8 ++++---- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 24 ++++++----------------- 2 files changed, 10 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 7e703be..bf35ac4 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2205,10 +2205,6 @@ static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", dev->mtu, new_mtu); - if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { - en_err(priv, "Bad MTU size:%d.\n", new_mtu); - return -EPERM; - } if (priv->xdp_ring_num && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) { en_err(priv, "MTU size:%d requires frags but XDP running\n", new_mtu); @@ -3288,6 +3284,10 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; } + /* MTU range: 46 - hw-specific max */ + dev->min_mtu = MLX4_EN_MIN_MTU; + dev->max_mtu = priv->max_mtu; + mdev->pndev[port] = dev; mdev->upper[port] = NULL; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 7eaf380..03183eb 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2851,31 +2851,13 @@ static int mlx5e_set_features(struct net_device *netdev, return err ? -EINVAL : 0; } -#define MXL5_HW_MIN_MTU 64 -#define MXL5E_MIN_MTU (MXL5_HW_MIN_MTU + ETH_FCS_LEN) - static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) { struct mlx5e_priv *priv = netdev_priv(netdev); - struct mlx5_core_dev *mdev = priv->mdev; bool was_opened; - u16 max_mtu; - u16 min_mtu; int err = 0; bool reset; - mlx5_query_port_max_mtu(mdev, &max_mtu, 1); - - max_mtu = MLX5E_HW2SW_MTU(max_mtu); - min_mtu = MLX5E_HW2SW_MTU(MXL5E_MIN_MTU); - - if (new_mtu > max_mtu || new_mtu < min_mtu) { - netdev_err(netdev, - "%s: Bad MTU (%d), valid range is: [%d..%d]\n", - __func__, new_mtu, min_mtu, max_mtu); - return -EINVAL; - } - mutex_lock(&priv->state_lock); reset = !priv->params.lro_en && @@ -3835,6 +3817,7 @@ int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, struct net_device *netdev) { const struct mlx5e_profile *profile; struct mlx5e_priv *priv; + u16 max_mtu; int err; priv = netdev_priv(netdev); @@ -3865,6 +3848,11 @@ int mlx5e_attach_netdev(struct mlx5_core_dev *mdev, struct net_device *netdev) mlx5e_init_l2_addr(priv); + /* MTU range: 68 - hw-specific max */ + netdev->min_mtu = ETH_MIN_MTU; + mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1); + netdev->max_mtu = MLX5E_HW2SW_MTU(max_mtu); + mlx5e_set_dev_port_mtu(netdev); if (profile->enable) -- 2.10.0