From owner-freebsd-arch@freebsd.org Sat Oct 13 18:07:30 2018 Return-Path: Delivered-To: freebsd-arch@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8495710D156A; Sat, 13 Oct 2018 18:07:30 +0000 (UTC) (envelope-from jmg@gold.funkthat.com) Received: from gold.funkthat.com (gate2.funkthat.com [208.87.223.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "gate2.funkthat.com", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 081E78456A; Sat, 13 Oct 2018 18:07:29 +0000 (UTC) (envelope-from jmg@gold.funkthat.com) Received: from gold.funkthat.com (localhost [127.0.0.1]) by gold.funkthat.com (8.15.2/8.15.2) with ESMTPS id w9DI7KuJ048378 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 13 Oct 2018 11:07:20 -0700 (PDT) (envelope-from jmg@gold.funkthat.com) Received: (from jmg@localhost) by gold.funkthat.com (8.15.2/8.15.2/Submit) id w9DI7KBn048377; Sat, 13 Oct 2018 11:07:20 -0700 (PDT) (envelope-from jmg) Date: Sat, 13 Oct 2018 11:07:20 -0700 From: John-Mark Gurney To: Warner Losh Cc: Brooks Davis , FreeBSD-STABLE Mailing List , FreeBSD Net , "freebsd-arch@freebsd.org" , freebsd-fcp@freebsd.org Subject: Re: FCP-0101: Deprecating most 10/100 Ethernet drivers Message-ID: <20181013180720.GW75530@funkthat.com> Mail-Followup-To: Warner Losh , Brooks Davis , FreeBSD-STABLE Mailing List , FreeBSD Net , "freebsd-arch@freebsd.org" , freebsd-fcp@freebsd.org References: <20181004154744.79EA3154E@spqr.komquats.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Operating-System: FreeBSD 11.0-RELEASE-p7 amd64 X-PGP-Fingerprint: D87A 235F FB71 1F3F 55B7 ED9B D5FF 5A51 C0AC 3D65 X-Files: The truth is out there X-URL: https://www.funkthat.com/ X-Resume: https://www.funkthat.com/~jmg/resume.html X-TipJar: bitcoin:13Qmb6AeTgQecazTWph4XasEsP7nGRbAPE X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? User-Agent: Mutt/1.6.1 (2016-04-27) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (gold.funkthat.com [127.0.0.1]); Sat, 13 Oct 2018 11:07:21 -0700 (PDT) X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Oct 2018 18:07:30 -0000 Warner Losh wrote this message on Thu, Oct 04, 2018 at 09:53 -0600: > On Thu, Oct 4, 2018 at 9:46 AM Cy Schubert > wrote: > > > I'm willing to help out with rl(4) as I have one here. Others, not > > scheduled for removal, that I can help one way or another are are NICs, > > including wireless, currently installed here. > > > > There's an iflib man page that's a decent place to start. The API has > evolved over time, so corrections to the man page would be welcome (and > committed as quickly as the freeze allows). I'm reading through the current > iflib drivers to see which one would be best to recommend. Can you recommend one? It'd be nice to just document which driver you should use as a reference in the iflib man page... I looked briefly at converting awg over to iflib, but the iflib man pages were very sparce in any text to describe what each function needs to do... It says it in very high level, which is useful if you already know what needs to be done.. for example: ifdi_tx_queues_alloc() Mandatory function that is called during iflib_attach to allocate transmit queues. vaddrs and paddrs are arrays of virtual and physical addresses respectively of the hardware transmit queues. ntxqs is the number of queues per qset. ntxqsets is the number of qsets. It says it allocates memory for the queue, but upon allocation where does it put the values? It sounds like vaddrs and paddrs arrays are already allocated and you just use these addresses... But there is no way I can write code from this description... Also, lots of terminology is missing, like what is a qset? -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."