From owner-freebsd-net@FreeBSD.ORG Thu Mar 13 01:27:53 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AFEE01065670 for ; Thu, 13 Mar 2008 01:27:53 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from el-out-1112.google.com (el-out-1112.google.com [209.85.162.179]) by mx1.freebsd.org (Postfix) with ESMTP id 39DA28FC19 for ; Thu, 13 Mar 2008 01:27:53 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: by el-out-1112.google.com with SMTP id v27so1825133ele.12 for ; Wed, 12 Mar 2008 18:27:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:received:date:from:to:cc:subject:message-id:reply-to:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; bh=cPnyEOp1Rzzd/jS2ttQoEijwEb0ocGvnwZEdexBB+H4=; b=nFq/31rRrJTOF1VZGtbnOzAxEgy/9rvAaeiWQ81zFJv9VuE6NdokoVZ9e4ujTNZjXHg9t0aBqJcoAlUGweWi/0llbTv7liJJUd9HyugX9kMPzJz+p/oxtmNEufC4JabmVW4zvxqXoSjkSsRe7twzskXhORJTUBJnByowFd4+1WU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:reply-to:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; b=bAqgzQw+djkzZDBafAihEMA9oIMITJnaSzYA7qpgHPsUn70z0OFhv+BneC3i8v9X5Ie/Ds86i31Xwkzw6UwFPz6CRtjwEgdNQRsTgvK6po704ylxiwtyaQjFY9kg5K0OXcCqw0+WGaFsOXQKpbU1YpL6USakgvsZJtI8lDaI+/A= Received: by 10.150.203.8 with SMTP id a8mr4982783ybg.56.1205371672225; Wed, 12 Mar 2008 18:27:52 -0700 (PDT) Received: from michelle.cdnetworks.co.kr ( [211.53.35.84]) by mx.google.com with ESMTPS id 35sm17258713wra.37.2008.03.12.18.27.48 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 12 Mar 2008 18:27:50 -0700 (PDT) Received: from michelle.cdnetworks.co.kr (localhost.cdnetworks.co.kr [127.0.0.1]) by michelle.cdnetworks.co.kr (8.13.5/8.13.5) with ESMTP id m2D1RjIm017355 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 13 Mar 2008 10:27:45 +0900 (KST) (envelope-from pyunyh@gmail.com) Received: (from yongari@localhost) by michelle.cdnetworks.co.kr (8.13.5/8.13.5/Submit) id m2D1Rflt017354; Thu, 13 Mar 2008 10:27:41 +0900 (KST) (envelope-from pyunyh@gmail.com) Date: Thu, 13 Mar 2008 10:27:41 +0900 From: Pyun YongHyeon To: Daniel Dias Gon?alves Message-ID: <20080313012741.GC16972@cdnetworks.co.kr> References: <47D834AE.8080301@dgnetwork.com.br> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47D834AE.8080301@dgnetwork.com.br> User-Agent: Mutt/1.4.2.1i Cc: freebsd-net@freebsd.org, freebsd-bugs@freebsd.org, freebsd-smp@freebsd.org Subject: Re: FreeBSD 6.3 fxp0 MBUF and PAE X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Mar 2008 01:27:53 -0000 On Wed, Mar 12, 2008 at 04:53:18PM -0300, Daniel Dias Gon?alves wrote: > Hi, > > When using the interface fxp0 with PAE enable in kernel, occurs the > following error: > > fxp0: can't map mbuf (error 12) > ... > > it repeats, repeats and lost communication. > error 12 means ENOMEM. bus_dmamap_load_mbuf_sg(9) failed due to insuffcient resources. I guess there is no way to overcome this situation in driver. The only remaining way I can think of would be reclaiming of transmitted frames but how well it works would depends on circumstances. Personally I don't see a reason to print these ENOMEM errors for production box without late limiting. > Information: > 6.3-RELEASE > > fxp0@pci14:4:0: class=0x020000 card=0x00708086 chip=0x12298086 rev=0x10 > hdr=0x00 > vendor = 'Intel Corporation' > device = '82550/1/7/8/9 EtherExpress PRO/100(B) Ethernet Adapter' > class = network > subclass = ethernet > > I wait reply. > > Thanks. > > Daniel -- Regards, Pyun YongHyeon