From patchwork Wed Aug 26 16:42:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Nelson X-Patchwork-Id: 1352036 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=none (p=none dis=none) header.from=pensando.io Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=pensando.io header.i=@pensando.io header.a=rsa-sha256 header.s=google header.b=4zHDf6sb; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BcBVX4bsTz9sSJ for ; Thu, 27 Aug 2020 02:42:44 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728053AbgHZQmm (ORCPT ); Wed, 26 Aug 2020 12:42:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727980AbgHZQmX (ORCPT ); Wed, 26 Aug 2020 12:42:23 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C13C6C061574 for ; Wed, 26 Aug 2020 09:42:23 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id m8so1271525pfh.3 for ; Wed, 26 Aug 2020 09:42:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pensando.io; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=b95V2uQSQxoMk2ke897SOwfl3yK+HzDEOhz3RteTQpg=; b=4zHDf6sbD8Q29J4tUVwa7NOuEiLUTkv4yBZZc1L+TB5D9BzdIfygR8GjuJJde5THLo OqPHkUenOk9+Q0wvqv+W1O6tYG3RzEgv9jL9F8ozylPS5VUoVtWtjqkdLPR9f0qqfe+t MInPanjtixBh+1wnrdICEi2Lo2o9fKz11ZTBkpDvwG19wPLnaM1Sbue/FSy5SFU0F4mW jKCwoEjWm6bwyauwicBynpXLBqOAAR2D/3EPVglR0ioxbjWonoOcuy6IqSmH0u2NTq6t JZl8GVpB47pUs/d8UvL2XnXn+ur6YL02MLSevgX9wXTYe6LO/fX1yghjeknRWKJur7Ja p4Ow== 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; bh=b95V2uQSQxoMk2ke897SOwfl3yK+HzDEOhz3RteTQpg=; b=VruSxxpu5BxiuXox4K8AXD2vvWS7EUW6K5qFXIHd3L8rBHtFrIsQYFD6YVkOIqq5Q3 Vv+pF7mvupxCCfZnloBteupG9o1Jmrh32Jmwmr2leSfgv42gs0BQYzUfucV4k03O3XHC UZaKFC02RZ5rCWk/MS+J+lJWA8hFThfjoyT5ODfhCEWthxdNiXFHYYGquz2i1nfD6vSQ 81Lk6y/Gf78tdilABBwIW19HOoac9B9PCYsAJZzHcEIfY+DDn2MDb9mrvXzK/8+S5SW4 BocEQg+NEqTOes7+Cw+AeChq4cqjs60Nvo/b3T5yqT+mWiw4Y1L5TxBfWeMKTeQawmbq wQ6Q== X-Gm-Message-State: AOAM531Yi0Pe18AznbNamz8gVQsbVjC0q1aaRwYDf+tPkvnsQQ75Wjur /VMXcBPzLMcM5P12W84HWiynnqFtKCsc2Q== X-Google-Smtp-Source: ABdhPJycxjzNXbZcMRxdDjpjkYzbJxMMgjB6K1RVg6FMM56LtSuXEG2D9h+Qi+xFikQP/bYnCPJ0Dw== X-Received: by 2002:a62:53c2:: with SMTP id h185mr12773164pfb.53.1598460143045; Wed, 26 Aug 2020 09:42:23 -0700 (PDT) Received: from driver-dev1.pensando.io ([12.226.153.42]) by smtp.gmail.com with ESMTPSA id h193sm2986052pgc.42.2020.08.26.09.42.22 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Aug 2020 09:42:22 -0700 (PDT) From: Shannon Nelson To: netdev@vger.kernel.org, davem@davemloft.net Cc: Shannon Nelson Subject: [PATCH net-next 01/12] ionic: set MTU floor at ETH_MIN_MTU Date: Wed, 26 Aug 2020 09:42:03 -0700 Message-Id: <20200826164214.31792-2-snelson@pensando.io> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200826164214.31792-1-snelson@pensando.io> References: <20200826164214.31792-1-snelson@pensando.io> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The NIC might tell us its minimum MTU, but let's be sure not to use something smaller than ETH_MIN_MTU. Signed-off-by: Shannon Nelson --- drivers/net/ethernet/pensando/ionic/ionic_lif.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 26988ad7ec97..235215c28f29 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -2079,7 +2079,8 @@ static struct ionic_lif *ionic_lif_alloc(struct ionic *ionic, unsigned int index lif->identity = lid; lif->lif_type = IONIC_LIF_TYPE_CLASSIC; ionic_lif_identify(ionic, lif->lif_type, lif->identity); - lif->netdev->min_mtu = le32_to_cpu(lif->identity->eth.min_frame_size); + lif->netdev->min_mtu = max_t(unsigned int, ETH_MIN_MTU, + le32_to_cpu(lif->identity->eth.min_frame_size)); lif->netdev->max_mtu = le32_to_cpu(lif->identity->eth.max_frame_size) - ETH_HLEN - VLAN_HLEN;