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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 55AD4C32751 for ; Wed, 31 Jul 2019 23:14:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2AD2020659 for ; Wed, 31 Jul 2019 23:14:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728651AbfGaXN7 (ORCPT ); Wed, 31 Jul 2019 19:13:59 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:45328 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725793AbfGaXN7 (ORCPT ); Wed, 31 Jul 2019 19:13:59 -0400 Received: from localhost (c-24-20-22-31.hsd1.or.comcast.net [24.20.22.31]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 5CE8C12659B7F; Wed, 31 Jul 2019 16:13:58 -0700 (PDT) Date: Wed, 31 Jul 2019 19:13:57 -0400 (EDT) Message-Id: <20190731.191357.886589630333387649.davem@davemloft.net> To: nikolay@cumulusnetworks.com Cc: netdev@vger.kernel.org, roopa@cumulusnetworks.com, bridge@lists.linux-foundation.org Subject: Re: [PATCH net-next] net: bridge: mcast: add delete due to fast-leave mdb flag From: David Miller In-Reply-To: <20190730122041.14647-1-nikolay@cumulusnetworks.com> References: <20190730122041.14647-1-nikolay@cumulusnetworks.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 31 Jul 2019 16:13:58 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Nikolay Aleksandrov Date: Tue, 30 Jul 2019 15:20:41 +0300 > In user-space there's no way to distinguish why an mdb entry was deleted > and that is a problem for daemons which would like to keep the mdb in > sync with remote ends (e.g. mlag) but would also like to converge faster. > In almost all cases we'd like to age-out the remote entry for performance > and convergence reasons except when fast-leave is enabled. In that case we > want explicit immediate remote delete, thus add mdb flag which is set only > when the entry is being deleted due to fast-leave. > > Signed-off-by: Nikolay Aleksandrov Applied, thanks Nikolay.