From nobody Tue Apr 7 14:22:32 2026 Received: from canpmsgout12.his.huawei.com (canpmsgout12.his.huawei.com [113.46.200.227]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C2C9A374E74; Fri, 13 Mar 2026 07:54:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.227 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773388485; cv=none; b=LBRTQaQome5qRerB7mGWaef1ZJNVp0yq45Bd9azbkBLbxlDU+fJboXG6nkuBqve+DPimHWYnpTKm0RQkJAneLsntiatVaIiq2fFc9lkgw0aazOslXBSnkJ6fezsT9xRaliQ0l3qhmrdFoE7g5MKysiNLJNXvl7GAY0JjThZSTSA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773388485; c=relaxed/simple; bh=yO9C2RLv95ulbAN5ed3eGCZMWBDCXNQGpqgwo+38sw4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=HosCWPwGFGAzOQLVZGezqcBGrG1CQABNJLmRfDeyJZsDDuQahbgi0XU2u3GjTENuz6WlbCN6Me2oeF7Nv6qX6bHud9YmrCflIfS6lNz+FbBNyyrPmMNZo2uMQah7W9Sk3I7iJL99bVqvWahzVuSsW05f09TW+BQ/CfF7+wOxJ/Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=yO8Abm9A; arc=none smtp.client-ip=113.46.200.227 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="yO8Abm9A" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=jfUZnJ4KtdHpPCGY9cJFcmBAOCwmguRa9XcAdVY4QSo=; b=yO8Abm9ATSZKKMOH13FNuL3epNg8NuwSkXeCPyFFHv9YlFa6L5/W3EepIPMZcWHFN53eHuY8D a3vq6dcqNJaQmBTH7zAhct76k6wsZxH0ISUlXB7Cz6N4monh2Kc9qwtYQz89a+zn/OJ/anJrk4B A2o5nzt5lfWYZnBHvuKzgfI= Received: from mail.maildlp.com (unknown [172.19.162.92]) by canpmsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4fXGp40Tk8znTWC; Fri, 13 Mar 2026 15:49:00 +0800 (CST) Received: from kwepemf100013.china.huawei.com (unknown [7.202.181.12]) by mail.maildlp.com (Postfix) with ESMTPS id B03B640565; Fri, 13 Mar 2026 15:54:34 +0800 (CST) Received: from DESKTOP-62GVMTR.china.huawei.com (10.174.189.124) by kwepemf100013.china.huawei.com (7.202.181.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.36; Fri, 13 Mar 2026 15:54:33 +0800 From: Fan Gong To: Fan Gong , Zhu Yikai , , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Andrew Lunn , Ioana Ciornei CC: , , luosifu , Xin Guo , Zhou Shuai , Wu Like , Shi Jing , Zheng Jiezhen , Maxime Chevallier Subject: [PATCH net-next v01 5/7] hinic3: Add MTU size validation Date: Fri, 13 Mar 2026 15:54:12 +0800 Message-ID: <53eb2c11ed4ccd93787352ef48ca56d6d51a150a.1773387649.git.zhuyikai1@h-partners.com> X-Mailer: git-send-email 2.51.0.windows.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems500002.china.huawei.com (7.221.188.17) To kwepemf100013.china.huawei.com (7.202.181.12) Content-Type: text/plain; charset="utf-8" Check whether the MTU size is within a reasonable range. Co-developed-by: Zhu Yikai Signed-off-by: Zhu Yikai Signed-off-by: Fan Gong --- drivers/net/ethernet/huawei/hinic3/hinic3_nic_cfg.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/ethernet/huawei/hinic3/hinic3_nic_cfg.c b/drivers/= net/ethernet/huawei/hinic3/hinic3_nic_cfg.c index e7aa54b0e465..aed95fdeccda 100644 --- a/drivers/net/ethernet/huawei/hinic3/hinic3_nic_cfg.c +++ b/drivers/net/ethernet/huawei/hinic3/hinic3_nic_cfg.c @@ -246,6 +246,19 @@ int hinic3_set_port_mtu(struct net_device *netdev, u16= new_mtu) struct l2nic_func_tbl_cfg func_tbl_cfg =3D {}; struct hinic3_hwdev *hwdev =3D nic_dev->hwdev; =20 + if (new_mtu < HINIC3_MIN_MTU_SIZE) { + dev_err(hwdev->dev, + "Invalid mtu size: %ubytes, mtu size < %ubytes\n", + new_mtu, HINIC3_MIN_MTU_SIZE); + return -EINVAL; + } + + if (new_mtu > HINIC3_MAX_JUMBO_FRAME_SIZE) { + dev_err(hwdev->dev, "Invalid mtu size: %ubytes, mtu size > %ubytes\n", + new_mtu, HINIC3_MAX_JUMBO_FRAME_SIZE); + return -EINVAL; + } + func_tbl_cfg.mtu =3D new_mtu; =20 return hinic3_set_function_table(hwdev, BIT(L2NIC_FUNC_TBL_CFG_MTU), --=20 2.43.0