Date: Sun, 1 Sep 2013 08:45:19 -0700 (PDT) From: Barney Cordoba <barney_cordoba@yahoo.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: Andre Oppermann <andre@freebsd.org>, Alan Somers <asomers@freebsd.org>, "net@freebsd.org" <net@freebsd.org>, Jack F Vogel <jfv@freebsd.org>, "Justin T. Gibbs" <gibbs@freebsd.org>, "T.C. Gubatayao" <tgubatayao@barracuda.com> Subject: Re: Flow ID, LACP, and igb Message-ID: <1378050319.62710.YahooMailNeo@web121601.mail.ne1.yahoo.com> In-Reply-To: <CA%2BhQ2%2Bj-DDuEX1KCDYioCactjL71p-d4AtusPUfePrswDyUpog@mail.gmail.com> References: <D01A0CB2-B1E3-4F4B-97FA-4C821C0E3FD2@FreeBSD.org> <521BBD21.4070304@freebsd.org> <CAOtMX2jvKGY==t9i-a_8RtMAPH2p1VDj950nMHHouryoz3nbsA@mail.gmail.com> <521EE8DA.3060107@freebsd.org> <BCC2C62D4FE171479E2F1C2593FE508B0BE24383@BN-SCL-MBX03.Cudanet.local> <CAOtMX2h5SGh5eYV50y%2BQB_s367V9iattGU862wwXcONDV%2BTG8g@mail.gmail.com> <CA%2BhQ2%2BhgTaK1ZCOLGVFjSPY8nyNPHK4waSecyRQxR1gQcyjztg@mail.gmail.com> <1377952913.44129.YahooMailNeo@web121605.mail.ne1.yahoo.com> <BCC2C62D4FE171479E2F1C2593FE508B0BE2440B@BN-SCL-MBX03.Cudanet.local> <1378001733.36695.YahooMailNeo@web121606.mail.ne1.yahoo.com> <CA%2BhQ2%2Bj-DDuEX1KCDYioCactjL71p-d4AtusPUfePrswDyUpog@mail.gmail.com>
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Comcast sends packets OOO. With any decent number of internet hops you're likely to encounter a load balancer or packet shaper that sends packets OOO, so you just can't be worried about it. In fact, your designs MUST work with OOO packets. Getting balance on your load balanced lines is certainly a bigger upside than the additional CPU used. You can buy a faster processor for your "stack" for a lot less than you can buy bandwidth. Frankly my opinion of LRO is that it's a science project suitable for labs only. It's a trick to get more bandwidth than your bus capacity; the answer is to not run PCIe2 if you need pcie3. You can use it internally if you have control of all of the machines. When I modify a driver the first thing that I do is rip it out. BC ________________________________ From: Luigi Rizzo <rizzo@iet.unipi.it> To: Barney Cordoba <barney_cordoba@yahoo.com> Cc: Andre Oppermann <andre@freebsd.org>; Alan Somers <asomers@freebsd.org>; "net@freebsd.org" <net@freebsd.org>; Jack F Vogel <jfv@freebsd.org>; Justin T. Gibbs <gibbs@freebsd.org>; T.C. Gubatayao <tgubatayao@barracuda.com> Sent: Saturday, August 31, 2013 10:27 PM Subject: Re: Flow ID, LACP, and igb On Sun, Sep 1, 2013 at 4:15 AM, Barney Cordoba <barney_cordoba@yahoo.com>wrote: > ... > [your point on testing with realistic assumptions is surely a valid one] > > Of course there's nothing really wrong with OOO packets. We had this > discussion before; lots of people > have round robin dual homing without any ill effects. It's just not an > issue. > It depends on where you are. It may not be an issue if the reordering is not large enough to trigger retransmissions, but even then it is annoying as it causes more work in the endpoint -- it prevents LRO from working, and even on the host stack it takes more work to sort where an out of order segment goes than appending an in-order one to the socket buffer. cheers luigi _______________________________________________ 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" From owner-freebsd-net@FreeBSD.ORG Sun Sep 1 18:00:15 2013 Return-Path: <owner-freebsd-net@FreeBSD.ORG> Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 9B48C1A1; Sun, 1 Sep 2013 18:00:15 +0000 (UTC) (envelope-from kubito@gmail.com) Received: from mail-lb0-x22d.google.com (mail-lb0-x22d.google.com [IPv6:2a00:1450:4010:c04::22d]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id B70DC2C21; Sun, 1 Sep 2013 18:00:14 +0000 (UTC) Received: by mail-lb0-f173.google.com with SMTP id o14so3188539lbi.32 for <multiple recipients>; Sun, 01 Sep 2013 11:00:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s 120113; h=message-id:date:sender:to:subject:from:reply-to:cc; bh=+vScTl6jLxxdO0zrKnhx6+3hp3il4IhUZeB8DTKTJEE=; b=MgX5pePLKJI3FZRq+CgwbVi0MF283niaPV2Pb68tyKa/YJdOkkCP4la5+q5BPUPDTZ LB8/7NUKok35zMx/ivFJmGvNL/nm6bjZXwRJoT+NvfuZP/6OQ3kRXXMzwfN9yeJg01to aDb3K7j7gmPsr6XMII5Zbg9NXYb2iOGmpHGGaus9c1rAzFiDEV8DwSnNIDyT6sbWcddg jqMI0ylA2J0JKQyrahdW6mp3qgixYntdv/p/CTP2A5GUk5Yk0GFL5118QQPlA7FETfc9 vGVMNFDTfktaSiPJ+B8+JC1BBhP82o5HRDazxaCcs/mdyVwqOWndxoUySynB3WUtupcn lIcw=X-Received: by 10.152.26.72 with SMTP id j8mr17837819lag.19.1378058412473; Sun, 01 Sep 2013 11:00:12 -0700 (PDT) Received: from localhost (a91-154-115-217.elisa-laajakaista.fi. [91.154.115.217]) by mx.google.com with ESMTPSA id b1sm4378725lah.6.1969.12.31.16.00.00 (version=TLSv1.2 cipherėDHE-RSA-RC4-SHA bits8/128); Sun, 01 Sep 2013 11:00:11 -0700 (PDT) Message-ID: <522380ab.811c980a.63e7.ffff829a@mx.google.com> Date: Sun, 01 Sep 2013 11:00:11 -0700 (PDT) Sender: Raphael Kubo da Costa <kubito@gmail.com> To: FreeBSD-gnats-submit@freebsd.org Subject: [PATCH] Add product ID for Asus USB-BT400 Bluetooth adaptor From: Raphael Kubo da Costa <rakuco@FreeBSD.org> X-send-pr-version: 3.114 X-GNATS-Notify: Cc: freebsd-net@FreeBSD.org, hselasky@FreeBSD.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: Raphael Kubo da Costa <rakuco@FreeBSD.org> List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>; List-Post: <mailto:freebsd-net@freebsd.org> List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 01 Sep 2013 18:00:15 -0000 >Submitter-Id: current-users >Originator: Raphael Kubo da Costa >Organization: FreeBSD Project >Confidential: no >Synopsis: [PATCH] Add product ID for Asus USB-BT400 Bluetooth adaptor >Severity: non-critical >Priority: low >Category: kern >Class: change-request >Release: FreeBSD 10.0-CURRENT amd64 >Environment: System: FreeBSD orwell 10.0-CURRENT FreeBSD 10.0-CURRENT #2 r255096: Sat Aug 31 19:35:58 EEST 2013 root@orwell:/usr/obj/usr/src/sys/ORWELL amd64 >Description: The attached patch adds another product ID to the list of devices using the BCM20702A0 chipset, ASUS USB-BT400. usbconfig dump_device_desc output: ugen2.3: <BCM20702A0 Broadcom Corp> at usbus2, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA) bLength = 0x0012 bDescriptorType = 0x0001 bcdUSB = 0x0200 bDeviceClass = 0x00ff bDeviceSubClass = 0x0001 bDeviceProtocol = 0x0001 bMaxPacketSize0 = 0x0040 idVendor = 0x0b05 idProduct = 0x17cb bcdDevice = 0x0112 iManufacturer = 0x0001 <Broadcom Corp> iProduct = 0x0002 <BCM20702A0> iSerialNumber = 0x0003 <000272C64400> bNumConfigurations = 0x0001 >How-To-Repeat: >Fix: --- ng_ubt-asus-17cb.diff begins here --- Index: sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c ==================================================================--- sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c (revision 255096) +++ sys/netgraph/bluetooth/drivers/ubt/ng_ubt.c (working copy) @@ -494,6 +494,7 @@ /* Broadcom BCM20702A0 */ { USB_VPI(USB_VENDOR_ASUS, 0x17b5, 0) }, + { USB_VPI(USB_VENDOR_ASUS, 0x17cb, 0) }, { USB_VPI(USB_VENDOR_LITEON, 0x2003, 0) }, { USB_VPI(USB_VENDOR_FOXCONN, 0xe042, 0) }, { USB_VPI(USB_VENDOR_DELL, 0x8197, 0) }, --- ng_ubt-asus-17cb.diff ends here ---
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