From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADDB2C00140 for ; Sun, 21 Aug 2022 16:08:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230387AbiHUQIw (ORCPT ); Sun, 21 Aug 2022 12:08:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35124 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229599AbiHUQIv (ORCPT ); Sun, 21 Aug 2022 12:08:51 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AA97140A8 for ; Sun, 21 Aug 2022 09:08:49 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id s1so9432995lfp.6 for ; Sun, 21 Aug 2022 09:08:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc; bh=6sWXp675pYqOez/EMhPpg5tHuwKzInKuJMmEB2E9JA0=; b=QSla3pWZW0rAYopThSLnHm9YCtbe95uFHNSelPNe3SRGpbR5R1DKYJoFbezZ91C7wS c6yCq2V/W5j3UKhNb4Zn+nVtqwcLjs1VMsPDSIYGKhW2FLEyJUmqn0BngQ6vcEhpKUdz 6cnBwW88LXCrHcBuHKF+Oni8Aa8r3rzQSrFLcyPQzpHr0qHCIlgCK1HVcUMf+ZLbusyh mOtHT4i2tuaqZrBYYCbRo0HrJJPo/CLTW33NUM0UigagXKuhNsRzFqxUAnS6BjUA5da/ fkP125ip+8qJKQtJYvWCbGSw7BZsQFnfIL5A2FlM0QmrcWr757wOAJGpE2SqhUq0gjBf K8PQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc; bh=6sWXp675pYqOez/EMhPpg5tHuwKzInKuJMmEB2E9JA0=; b=E8j8cv+jA33RT9jA14vTZAGH2byYddf7Nd3iQb0Lz2rejkYlFwQTVspA2npdnOjhIi jNJfPAgLdDAMDnQixm1YILbGICRlulqYw/FiG1mXBRFFtwVjpfOdFLIy3M7XtYmMTDdq Da3PtsofrEv90M4dEXh0TJALIMI5Qs2cCF4QWD4CXf/QGNgnkuBDtP30AcB5CIefx+A+ ZhcNw7CG/f2lXIHDnLwR53o+nl4V1lGqTKJmeXhFjVPeQ4sRNszacfbHuJcM5JapIKQK bpx9NneFasCwupcMmM3rChZsWZ2Ezwq1grXCLgVwsjo1EkT+9bq0vLfGTA39+BbhXYtP sAlQ== X-Gm-Message-State: ACgBeo1s+dmqjBvCJikr88nHA1CrMR7CX4nHuWkJEtLTP4AgHC/bq1v6 43z5agQjrP1Qa/TOYgBbzXRRfYlBL49PEjbQ X-Google-Smtp-Source: AA6agR6Lb/Jwlt7ER/hRtUJg5DrD+QKPmh4Mzcc9Em7fiSXuWRGUH60D/5cRM6IgkInPrTJ/4aLPmQ== X-Received: by 2002:a05:6512:3d07:b0:492:c130:5381 with SMTP id d7-20020a0565123d0700b00492c1305381mr5159427lfv.497.1661098127270; Sun, 21 Aug 2022 09:08:47 -0700 (PDT) Received: from saproj-Latitude-5501.yandex.net ([2a02:6b8:0:40c:4c08:28eb:df1e:6068]) by smtp.gmail.com with ESMTPSA id s13-20020a056512214d00b0048b0526070fsm265315lfr.71.2022.08.21.09.08.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Aug 2022 09:08:46 -0700 (PDT) From: Sergei Antonov To: netdev@vger.kernel.org Cc: andrew@lunn.ch, olteanv@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, Sergei Antonov Subject: [PATCH] net: ftmac100: set max_mtu to allow DSA overhead setting Date: Sun, 21 Aug 2022 19:08:44 +0300 Message-Id: <20220821160844.474277-1-saproj@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In case ftmac100 is used with a DSA switch, Linux wants to set MTU to 1504 to accommodate for DSA overhead. With the default max_mtu it leads to the error message: ftmac100 92000000.mac eth0: error -22 setting MTU to 1504 to include DSA overhead ftmac100 supports packet length 1518 (MAX_PKT_SIZE constant), so it is safe to report it in max_mtu. Signed-off-by: Sergei Antonov --- drivers/net/ethernet/faraday/ftmac100.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c index 8a341e2d5833..2e6524009b19 100644 --- a/drivers/net/ethernet/faraday/ftmac100.c +++ b/drivers/net/ethernet/faraday/ftmac100.c @@ -1075,6 +1075,7 @@ static int ftmac100_probe(struct platform_device *pdev) SET_NETDEV_DEV(netdev, &pdev->dev); netdev->ethtool_ops = &ftmac100_ethtool_ops; netdev->netdev_ops = &ftmac100_netdev_ops; + netdev->max_mtu = MAX_PKT_SIZE; platform_set_drvdata(pdev, netdev); -- 2.34.1