From owner-freebsd-net@FreeBSD.ORG Fri May 22 15:21:31 2015 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id CC3644F0; Fri, 22 May 2015 15:21:31 +0000 (UTC) Received: from mail-ig0-x22f.google.com (mail-ig0-x22f.google.com [IPv6:2607:f8b0:4001:c05::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 90C7D130D; Fri, 22 May 2015 15:21:31 +0000 (UTC) Received: by igbpi8 with SMTP id pi8so38853261igb.0; Fri, 22 May 2015 08:21:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=ZLAaeDd8x9nV7CdE9A0VBtf5zvJ/FZSK2Xt9bJqmzgc=; b=GGwoPVSk7eYzYLhcWg8WJszZcwUs1QSITGG6Gf2B5+VRP4Mz8zys3HTLQ0mcuToUr6 BU/5E6e8JKamzd0SJnkFH7wGeohcurYWYMuS+eTiORDmUwcv53KzBarOXsKxbN1bhCj3 Ot0EelxXxBvP7stQ8QoO1drGY08cI0PDcuR6/aABnscg1wIn2k4Uz4uPPTROZIKJ42xV 1Q53owZye6Pu0iyVBXJUaw8vBNLbV2Z4lAe7myvQj6hZLM2V521QIaU9DsXbv8eSMQEs 4elNvtMRKSBS+uXzawB/UtqRPrqZr54u6F6ne0bIz+H8SBylWpuiKmeTfzhclXHmUSTv i4AA== X-Received: by 10.107.133.154 with SMTP id p26mr11397581ioi.7.1432308091027; Fri, 22 May 2015 08:21:31 -0700 (PDT) Received: from [172.22.132.117] ([192.119.231.58]) by mx.google.com with ESMTPSA id p4sm4014113igg.20.2015.05.22.08.21.29 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 22 May 2015 08:21:29 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Subject: Re: FreeBSD 9.3 - Intel X520-SR2 stops passing packets From: Guy Helmer In-Reply-To: Date: Fri, 22 May 2015 10:21:41 -0500 Cc: Christopher Forgeron , FreeBSD Net Message-Id: References: To: Eric Joyner X-Mailer: Apple Mail (2.2098) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 May 2015 15:21:32 -0000 > On May 21, 2015, at 6:09 PM, Eric Joyner wrote: >=20 > Are there any log messages printed out by the driver? The sysctls = don't really look out of the ordinary, other than the number of sub-64 = byte packets. Not that I could tell =E2=80=94 grep of /var/log/messages and the text = from the rotated messages.*.gz logs yielded nothing. Guy >=20 > On Thu, May 21, 2015 at 9:10 AM Guy Helmer > wrote: >=20 > > On May 21, 2015, at 8:52 AM, Christopher Forgeron = > wrote: > > > > A few things: > > > > 1) How long before you have this behaviour? > > > > 2) What's the output of 'netstat -m' when you have the problem? > > > > 3) What is your MTU set to, and do you have TSO on or off? > > > > On Thu, May 21, 2015 at 10:33 AM, Guy Helmer >> wrote: > > I=E2=80=99ve noticed that there have been reports of problems with = Intel X520-SR2 network interfaces stopping working. I think I=E2=80=99m = seeing a similar issue where the 10Gb interfaces stop receiving traffic = (they=E2=80=99re being used in promiscuous mode to sniff traffic from a = tap). ifconfig shows the interfaces are still active and the links are = OK. ifconfig down/up restores activity. I=E2=80=99ve changed = hw.intr_storm_threshold=3D8000 but I couldn=E2=80=99t tell if the = interrupt storm threshold had been triggered at the time the interfaces = stopped passing traffic. >=20 > It seems to run from hours to days without problems. >=20 > I don=E2=80=99t have the output of =E2=80=9Cnetstat -m=E2=80=9D = available, but it did not indicate any mbuf or cluster allocation = failures. No jumbo clusters (4k, 9k, or 16k) were allocated. >=20 > MTU is 1500. TSO is =E2=80=9Con=E2=80=9D but would seem to be = irrelevant =E2=80=94 no packets are transmitted out of these interfaces = (verified using =E2=80=9Cnetstat -i=E2=80=9D). >=20 > Thanks, > Guy > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net = > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org = "