From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-d.ads.isi.edu ([128.9.180.199]:16441 "EHLO mail-d.ads.isi.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728748AbgANUwx (ORCPT ); Tue, 14 Jan 2020 15:52:53 -0500 Date: Tue, 14 Jan 2020 15:52:50 -0500 From: Ryan Goodfellow Subject: Re: zero-copy between interfaces Message-ID: <20200114205250.GA85903@smtp.ads.isi.edu> References: <14f9e1bf5c3a41dbaec53f83cb5f0564@isi.edu> <20200113151159.GB68570@smtp.ads.isi.edu> MIME-Version: 1.0 In-Reply-To: Sender: xdp-newbies-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline To: Magnus Karlsson Cc: "xdp-newbies@vger.kernel.org" On Tue, Jan 14, 2020 at 10:59:19AM +0100, Magnus Karlsson wrote: >=20 > Just sent out a patch on the mailing list. Would be great if you could > try it out. Thanks for the quick turnaround. I gave this patch a go, both in the bpf-ne= xt tree and manually applied to the 5.5.0-rc3 branch I've been working with up= to=20 this point. It does allow for allocating more memory, however packet=20 forwarding no longer works. I did not see any complaints from dmesg, but he= re=20 is an example iperf3 session from a client that worked before. ry@xd2:~$ iperf3 -c 10.1.0.2 Connecting to host 10.1.0.2, port 5201 [ 5] local 10.1.0.1 port 53304 connected to 10.1.0.2 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 5.91 MBytes 49.5 Mbits/sec 2 1.41 KBytes [ 5] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes [ 5] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 5] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes [ 5] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 5] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes [ 5] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 5] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes ^C[ 5] 10.00-139.77 sec 0.00 Bytes 0.00 bits/sec 4 1.41 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-139.77 sec 5.91 MBytes 355 Kbits/sec 9 sende= r [ 5] 0.00-139.77 sec 0.00 Bytes 0.00 bits/sec receive= r iperf3: interrupt - the client has terminated I'll continue to investigate and report back with anything that I find. --=20 ~ ry