From patchwork Mon Apr 19 14:34:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gatis Peisenieks X-Patchwork-Id: 424338 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 D81F9C43461 for ; Mon, 19 Apr 2021 14:35:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B41F761279 for ; Mon, 19 Apr 2021 14:35:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241154AbhDSOfl (ORCPT ); Mon, 19 Apr 2021 10:35:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47742 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240130AbhDSOfe (ORCPT ); Mon, 19 Apr 2021 10:35:34 -0400 Received: from plekste.mt.lv (bute.mt.lv [IPv6:2a02:610:7501:2000::195]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 16915C06138A; Mon, 19 Apr 2021 07:35:03 -0700 (PDT) Received: from [2a02:610:7501:feff:1ccf:41ff:fe50:18b9] (helo=localhost.localdomain) by plekste.mt.lv with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1lYUzJ-0000xj-3e; Mon, 19 Apr 2021 17:34:57 +0300 From: Gatis Peisenieks To: chris.snook@gmail.com, davem@davemloft.net, kuba@kernel.org, hkallweit1@gmail.com, jesse.brandeburg@intel.com, dchickles@marvell.com, tully@mikrotik.com, eric.dumazet@gmail.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Gatis Peisenieks Subject: [PATCH net-next 3/4] atl1c: adjust max mtu according to Mikrotik 10/25G NIC ability Date: Mon, 19 Apr 2021 17:34:48 +0300 Message-Id: <20210419143449.751852-4-gatis@mikrotik.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210419143449.751852-1-gatis@mikrotik.com> References: <20210419143449.751852-1-gatis@mikrotik.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The new Mikrotik 10/25G NIC supports jumbo frames. Jumbo frames are supported for TSO as well. This enables the support for mtu up to 9500 bytes. Signed-off-by: Gatis Peisenieks --- drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c index 8b097964a035..920e408ce7b4 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -478,6 +478,8 @@ static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter, static netdev_features_t atl1c_fix_features(struct net_device *netdev, netdev_features_t features) { + struct atl1c_adapter *adapter = netdev_priv(netdev); + struct atl1c_hw *hw = &adapter->hw; /* * Since there is no support for separate rx/tx vlan accel * enable/disable make sure tx flag is always in same state as rx. @@ -487,8 +489,10 @@ static netdev_features_t atl1c_fix_features(struct net_device *netdev, else features &= ~NETIF_F_HW_VLAN_CTAG_TX; - if (netdev->mtu > MAX_TSO_FRAME_SIZE) - features &= ~(NETIF_F_TSO | NETIF_F_TSO6); + if (hw->nic_type != athr_mt) { + if (netdev->mtu > MAX_TSO_FRAME_SIZE) + features &= ~(NETIF_F_TSO | NETIF_F_TSO6); + } return features; } @@ -517,6 +521,9 @@ static void atl1c_set_max_mtu(struct net_device *netdev) netdev->max_mtu = MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); break; + case athr_mt: + netdev->max_mtu = 9500; + break; /* The 10/100 devices don't support jumbo packets, max_mtu 1500 */ default: netdev->max_mtu = ETH_DATA_LEN;