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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 5C50CC43381 for ; Thu, 28 Mar 2019 20:01:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 25B442173C for ; Thu, 28 Mar 2019 20:01:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="6bvx5EuA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726650AbfC1UBH (ORCPT ); Thu, 28 Mar 2019 16:01:07 -0400 Received: from vps0.lunn.ch ([185.16.172.187]:42660 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726140AbfC1UBH (ORCPT ); Thu, 28 Mar 2019 16:01:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=01SyKV0yJzoCmTKYQAF/nGovRoppG1TdcF/tkoCcQGY=; b=6bvx5EuAXpUrMeeWyADL6gd/Rq SlbwtaNr3Y37DHDY1UCA2Lg+lZFKTIOBxIN5pIoetL5XY91jUKURc44HV/nyImKFcqY9ZKZgCZiJE G6S1O8awf9vDxLy6sulYRG024aLnPnqSDU4LLmc1tkFfD70qFN0RG44kPYY/aZkbNZA8=; Received: from andrew by vps0.lunn.ch with local (Exim 4.89) (envelope-from ) id 1h9bCx-0002uy-Iz; Thu, 28 Mar 2019 21:01:03 +0100 Date: Thu, 28 Mar 2019 21:01:03 +0100 From: Andrew Lunn To: Heiner Kallweit Cc: John Linville , Florian Fainelli , "netdev@vger.kernel.org" Subject: Re: [PATCH 4/4] ethtool: add PHY Fast Link Down tunable to man page Message-ID: <20190328200103.GC5446@lunn.ch> References: <7abec5a5-8087-8591-8619-83605de6dddc@gmail.com> <2ca651c7-89b3-65fd-0941-b732692c8d41@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2ca651c7-89b3-65fd-0941-b732692c8d41@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org > + Sets the period after which the link is reported as down. Note that the PHY may choose > + the closest supported value. Only on reading back you get the actual value. Hi Heiner 'Only on reading back the tunable do you get the actual value.' would be better. > .TE > .PD > .RE > @@ -1090,6 +1106,14 @@ Link speed downshift after N failed 1000BASE-T auto-negotiation attempts. > Downshift is useful where cable does not have the 4 pairs instance. > > Gets the PHY downshift count/status. > +.TP > +.B fast\-link\-down > +Depending on the mode it may take 0.5s - 1s until a broken link is reported as down. > +In certain use cases a link-down event needs to be reported as soon as possible. > +Some PHYs support a Fast Link Down feature, and partially even allow to configure > +the period until until a broken link is reported as being down. Some PHYs support a Fast Link Down Feature and may allow configuration of the delay before a broken link is reported as being down. Andrew