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 X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 0CA6CC48BDF for ; Thu, 24 Jun 2021 05:57:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C84E1613EE for ; Thu, 24 Jun 2021 05:57:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C84E1613EE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hHFztAzg/yHLgrngSZbaUmw8TtTFx+LAV+Jhbff3A7g=; b=J8eIWSQ75IbxuB SFpzguWpBnwrXahB2K3KGFQKX0Qkg7ZxpK+c1N1eAGl+i6poF5rujZCme90L5Ogd9QAy3Y+9/k9Ic f/cLjZwRB+rx+u0iSHg1ZvAYb6tUc9teE4HPjnmQpng3wTyvRU8q7ga4sEn6AKmWZ2pdhENVh3xjW B0uXJp34AT+XGoIBswse4/5+c+C3OdHcVUZKg/InD1ojEwlsguKkuH4VPv/muVA4fFfgZYlV90AM3 VTfIt2fKd6dadmuSnaOCuZPTT4Q1E6+NFquewz3IT7uQLJiSxEqSgakrUnI03VjgOHj22uWZfl9xV /Asge4jVKpTj7qTo5Teg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwIME-00Csn9-Fu; Thu, 24 Jun 2021 05:56:58 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwIM7-00Csls-QK; Thu, 24 Jun 2021 05:56:56 +0000 X-UUID: c592ad65b1b4499a9d4dd0862d50b1d8-20210623 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=FEQYtdjqbCWNKHatVYZuGHDAgkkCK5B0KLaQ+w23Gkk=; b=pcwXYXoqsQrTkOa2hgUddpdesq6IC0TkFf4aFdnX59R/K/VmBZ2/pByti6XGXwzwbJrWXISrvs8AZHDD8Oa5VY2LhUe4p/oVzOk5cbxkHnVGVg+g3r3wC3wknQPuLeLJe01YRX6wcPj7Lo5YMc8LaUw2GX1XRRgl9sqq+HHJY10=; X-UUID: c592ad65b1b4499a9d4dd0862d50b1d8-20210623 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1174442954; Wed, 23 Jun 2021 22:56:49 -0700 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 23 Jun 2021 22:46:47 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 24 Jun 2021 13:46:45 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 24 Jun 2021 13:46:44 +0800 From: Rocco Yue To: David Ahern , Greg KH CC: "David S . Miller" , Jakub Kicinski , Jonathan Corbet , Hideaki YOSHIFUJI , David Ahern , Matthias Brugger , Felix Fietkau , John Crispin , Sean Wang , Mark Lee , , , , , , , , , , Rocco Yue Subject: Re: [PATCH 1/4] net: if_arp: add ARPHRD_PUREIP type Date: Thu, 24 Jun 2021 13:31:59 +0800 Message-ID: <20210624053159.22345-1-rocco.yue@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <020403ac-0c2a-4ad8-236b-d32e59aef772@gmail.com> References: <020403ac-0c2a-4ad8-236b-d32e59aef772@gmail.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210623_225653_892376_91C09FC3 X-CRM114-Status: GOOD ( 13.78 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Wed, 2021-06-23 at 23:15 -0600, David Ahern wrote: On 6/23/21 9:33 PM, Rocco Yue wrote: >> >> The difference between RAWIP and PUREIP is that they generate IPv6 >> link-local address and IPv6 global address in different ways. >> >> RAWIP: >> ~~~~~~ >> In the ipv6_generate_eui64() function, using RAWIP will always return 0, >> which will cause the kernel to automatically generate an IPv6 link-local >> address in EUI64 format and an IPv6 global address in EUI64 format. >> >> PUREIP: >> ~~~~~~~ >> After this patch set, when using PUREIP, kernel doesn't generate IPv6 >> link-local address regardless of which IN6_ADDR_GEN_MODE is used. >> >> @@ static void addrconf_dev_config(struct net_device *dev) >> + if (dev->type == ARPHRD_PUREIP) >> + return; >> >> And after recving RA message, kernel iterates over the link-local address >> that exists for the interface and uses the low 64bits of the link-local >> address to generate the IPv6 global address. >> The general process is as follows: >> ndisc_router_discovery() -> addrconf_prefix_rcv() -> >> ipv6_generate_eui64() -> ipv6_inherit_eui64() >> > > please add that to the commit message. Thanks for your reminding, will do. Thanks, Rocco _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek