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[2620:137:e000::1:20]) by mx.google.com with ESMTP id o11-20020a63920b000000b004d011c6f126si3734716pgd.848.2023.01.27.03.20.45; Fri, 27 Jan 2023 03:20:58 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=ZCk9RMRG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232660AbjA0LSQ (ORCPT + 99 others); Fri, 27 Jan 2023 06:18:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231865AbjA0LSB (ORCPT ); Fri, 27 Jan 2023 06:18:01 -0500 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FC9916AE5 for ; Fri, 27 Jan 2023 03:17:53 -0800 (PST) Received: by mail-wr1-x42e.google.com with SMTP id h12so4642392wrv.10 for ; Fri, 27 Jan 2023 03:17:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y+cl5Ym56wJ7OQnEfR1Yodsc3crTZ07l528z+P6rSd8=; b=ZCk9RMRGU7mfV6M8jd8TyoAUAnvKfA+DqMIC8dbPwZn9PUgxug7ZKvfBJN3N4gYsMM P9nDANJ0ErJiri6z/vDAL0OkNiJo8tMluVx0SQ0uu+q9ltK2vyFDXpejNT8Ffli8pfQd uflc1MpIfDgUZCDKVU+m+3WF3GxX0alv8BsUZvP6SohTpLHPonOUaJ3YLhMOarp7/tZ6 90kG3ArApiM6gV766VOEfm4GnWlA5jjCZ34fGWkx3dKaAeLP1l3oE2LnrNDjtH/UU7T6 76f721nxJfegLo85a26pwx8GV/W0hshL/dYMtwJMASKtjeEUr8MqxVwNdXxZfvPG5JQL 9qBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y+cl5Ym56wJ7OQnEfR1Yodsc3crTZ07l528z+P6rSd8=; b=V67WQ+LBV7f1HG2Wlz5rI61rSBFW9scxWYulZf+ndOPqAmNzRMRGSSDKyBgSzW2ctV We/lhQeAjgTN6fjpfy9yKcbHfG6ZgW2qmt0EsZ64MsnyM5UGvGJKaYR/IZleoBN3Mef7 ROsvVBPF/Obc96CWyT43QwPx6Gvria8osHFkDuNIsWIw69lGspWcVNYz2HJksKsV9ZOQ MLXqnCN06d/HbvdCkpAPEfONxzFe0oTiMDXbPRTdRJ2Zl80BTQhgTNK8i2BqPWiSeXI2 rhYifl6+FAP/Cq8BGyaqq3omRO8bnDF9lRFnrvOg7gC0EzBodfMzruxwzcK1pFLDYheb FFKQ== X-Gm-Message-State: AFqh2kovnZjJ2DZYO1C07NSwrVTpig7sanAXdY+wc/c0FyfroqjYHN7I dbZBNBiluVm4tJ2Row47lJnOCQ== X-Received: by 2002:a5d:6b01:0:b0:2bd:fd81:b503 with SMTP id v1-20020a5d6b01000000b002bdfd81b503mr35610704wrw.1.1674818271277; Fri, 27 Jan 2023 03:17:51 -0800 (PST) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id c13-20020adffb0d000000b002bfd190fd60sm1843314wrr.108.2023.01.27.03.17.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Jan 2023 03:17:50 -0800 (PST) From: Srinivas Kandagatla To: gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, Michael Walle , Andrew Lunn , Jakub Kicinski , Srinivas Kandagatla Subject: [PATCH 08/37] net: add helper eth_addr_add() Date: Fri, 27 Jan 2023 11:15:36 +0000 Message-Id: <20230127111605.25958-9-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230127111605.25958-1-srinivas.kandagatla@linaro.org> References: <20230127111605.25958-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756174439539276311?= X-GMAIL-MSGID: =?utf-8?q?1756174439539276311?= From: Michael Walle Add a helper to add an offset to a ethernet address. This comes in handy if you have a base ethernet address for multiple interfaces. Signed-off-by: Michael Walle Reviewed-by: Andrew Lunn Acked-by: Jakub Kicinski Signed-off-by: Srinivas Kandagatla --- include/linux/etherdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index a541f0c4f146..224645f17c33 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -507,6 +507,20 @@ static inline void eth_addr_inc(u8 *addr) u64_to_ether_addr(u, addr); } +/** + * eth_addr_add() - Add (or subtract) an offset to/from the given MAC address. + * + * @offset: Offset to add. + * @addr: Pointer to a six-byte array containing Ethernet address to increment. + */ +static inline void eth_addr_add(u8 *addr, long offset) +{ + u64 u = ether_addr_to_u64(addr); + + u += offset; + u64_to_ether_addr(u, addr); +} + /** * is_etherdev_addr - Tell if given Ethernet address belongs to the device. * @dev: Pointer to a device structure