From patchwork Wed Mar 17 00:30:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 404702 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 A2130C433E9 for ; Wed, 17 Mar 2021 00:31:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7647F64F92 for ; Wed, 17 Mar 2021 00:31:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229789AbhCQAbF (ORCPT ); Tue, 16 Mar 2021 20:31:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229743AbhCQAav (ORCPT ); Tue, 16 Mar 2021 20:30:51 -0400 Received: from mail-qk1-x72f.google.com (mail-qk1-x72f.google.com [IPv6:2607:f8b0:4864:20::72f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8041BC06175F for ; Tue, 16 Mar 2021 17:30:40 -0700 (PDT) Received: by mail-qk1-x72f.google.com with SMTP id b130so37241620qkc.10 for ; Tue, 16 Mar 2021 17:30:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:date:message-id:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=zA5IcSkZdzMYjmL0nkp46xqZGTradm6C/26ke9+ROTc=; b=TpLoEjdNa97hWFKfqofPTdN001mZvlLvJEb9AGWHDzNqKHRH5Asbyb1wnUMS0Qh/QD rShQiIiMBtMHkHMhvQ8KLkIRZ525HAx/fO6TOLi9y4g6F00DnZM12OpmUtuzP57sx6RO r7gV0iiDbE6R4m7h6AeWl8ch2ovMZWV1RttwghvVz153EZ541qxskwZ5oZKF8dB8exuA uTpjRdSOfqYx4SJ14UnX6z1+smrmiKC/Aq87unUek6xQvrdTbncG6Z92V1LaDYMxao9i awTRXg2wUxMJUz08CQmK6tcf0wl2yQCqUlgKOja23nqLIqW5nClAhb54xxQjrUqcEysj FX4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:date:message-id:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=zA5IcSkZdzMYjmL0nkp46xqZGTradm6C/26ke9+ROTc=; b=uByLaUpcO43VdE3zkz3wDRZEf6m9l3dGkuMb8bx3coy0V9YB2/Y0C/3DQdCOs8EhxP APUAipZLkaoILzZxEwfl/uSL7oBqk5wnfd6gbDkbie3wl75Y5I03EU3gSnXKy78J0Lzn IczRdr0VzNVzGUcwUrB3ahRWuVU2GOLt72sFllh9SCxkhsfOkgIThi9vUzsPvIokbUgm X45+SQHo5rEXGWyxOL6+W85J3KTuSkE7KuCQgdESpkFQszol1Mc4j4i4wferlC7WAll9 hiA3/0LN/weZp0gsQG7nYugEZ389+pPFylvMBAxGOo3Quu4xvOm+onnTmreeMVKNVmLx 9zLQ== X-Gm-Message-State: AOAM532dWJi4psIlwmtavCyUP7NbHyTDLOL6o2qOmyGnrX5MCeoOt7jM yPzPDg+SLqe5+mMxyBP01oM= X-Google-Smtp-Source: ABdhPJytZ3Tsacfz9IW64ZwGkAjrYyUIBGH0J6VR40u4Q/xcv0EwU/SgPRPEyBAZtDewReiQjYKqiw== X-Received: by 2002:a05:620a:214a:: with SMTP id m10mr1973501qkm.372.1615941039723; Tue, 16 Mar 2021 17:30:39 -0700 (PDT) Received: from localhost.localdomain ([2001:470:b:9c3:9e5c:8eff:fe4f:f2d0]) by smtp.gmail.com with ESMTPSA id f27sm15805825qkh.118.2021.03.16.17.30.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Mar 2021 17:30:39 -0700 (PDT) Subject: [net-next PATCH v2 01/10] ethtool: Add common function for filling out strings From: Alexander Duyck To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, oss-drivers@netronome.com, simon.horman@netronome.com, yisen.zhuang@huawei.com, salil.mehta@huawei.com, intel-wired-lan@lists.osuosl.org, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, drivers@pensando.io, snelson@pensando.io, netanel@amazon.com, akiyano@amazon.com, gtzalik@amazon.com, saeedb@amazon.com, GR-Linux-NIC-Dev@marvell.com, skalluru@marvell.com, rmody@marvell.com, kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, mst@redhat.com, jasowang@redhat.com, pv-drivers@vmware.com, doshir@vmware.com, alexanderduyck@fb.com, Kernel-team@fb.com Date: Tue, 16 Mar 2021 17:30:36 -0700 Message-ID: <161594103620.5644.13159023537924919629.stgit@localhost.localdomain> In-Reply-To: <161594093708.5644.11391417312031401152.stgit@localhost.localdomain> References: <161594093708.5644.11391417312031401152.stgit@localhost.localdomain> User-Agent: StGit/0.23 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Alexander Duyck Add a function to handle the common pattern of printing a string into the ethtool strings interface and incrementing the string pointer by the ETH_GSTRING_LEN. Most of the drivers end up doing this and several have implemented their own versions of this function so it would make sense to consolidate on one implementation. Signed-off-by: Alexander Duyck --- include/linux/ethtool.h | 9 +++++++++ net/ethtool/ioctl.c | 12 ++++++++++++ 2 files changed, 21 insertions(+) diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index ec4cd3921c67..3583f7fc075c 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -571,4 +571,13 @@ struct ethtool_phy_ops { */ void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops); +/** + * ethtool_sprintf - Write formatted string to ethtool string data + * @data: Pointer to start of string to update + * @fmt: Format of string to write + * + * Write formatted string to data. Update data to point at start of + * next string. + */ +extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...); #endif /* _LINUX_ETHTOOL_H */ diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 24783b71c584..0788cc3b3114 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -1844,6 +1844,18 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) return ret; } +__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); + va_end(args); + + *data += ETH_GSTRING_LEN; +} +EXPORT_SYMBOL(ethtool_sprintf); + static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) { struct ethtool_value id;