Date: Sat, 21 Oct 2006 19:09:41 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: freebsd-stable@FreeBSD.org, Jack Vogel <jfvogel@gmail.com>, Kris Kennaway <kris@obsecurity.org> Subject: Re: em network issues Message-ID: <20061021230941.GA15744@xor.obsecurity.org> In-Reply-To: <20061021173250.GB75694@cell.sick.ru> References: <b1fa29170610181523t6d240839i887632d6d7576762@mail.gmail.com> <2a41acea0610181531y732cd5sa7bf733cc445491c@mail.gmail.com> <20061018171704.A3851@demos.bsdclusters.com> <4537C126.5000207@FreeBSD.org> <2a41acea0610191140j13d43e12q72fc7697652e222a@mail.gmail.com> <20061019190221.GH71000@droso.net> <2a41acea0610191418q6c6fac45xdd9ad824bd6cae2f@mail.gmail.com> <20061021061706.GN40362@FreeBSD.org> <20061021165752.GA9681@xor.obsecurity.org> <20061021173250.GB75694@cell.sick.ru>
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--gKMricLos+KVdGMg Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Oct 21, 2006 at 09:32:50PM +0400, Gleb Smirnoff wrote: > On Sat, Oct 21, 2006 at 12:57:52PM -0400, Kris Kennaway wrote: > K> On Sat, Oct 21, 2006 at 10:17:06AM +0400, Gleb Smirnoff wrote: > K> > On Thu, Oct 19, 2006 at 02:18:13PM -0700, Jack Vogel wrote: > K> > J> The engineer in our test group has installed 6.2 BETA2 and attemp= ted via a > K> > J> number of tests to reproduce this problem, the machine even share= s the em > K> > J> interrupt with usb, and yet so far he has been unsuccessful. > K> >=20 > K> > I've failed to reproduce on a system where IRQ was shared between em= (4) > K> > and fxp(4). I've put traffic on both, but failed to reproduce. Proba= bly > K> > shared IRQ is required, but not sufficient. > K>=20 > K> Note what I've said a couple of times now...blasting packets out over > K> the shared em doesn't trigger it for me either. I can trigger it by > K> fetching via FTP from a remote machine over the em. >=20 > I suppose the TCP_STREAM test from the netperf is the same as ftp > fetch. Maybe, but why not just try fetch? ;) FYI, I still get timeouts from fetch on a shared em/fxp irq with DEVICE_POLLING configured. Turning on INTR_MPSAFE in the driver is the only known "fix" so far for this condition. Kris --gKMricLos+KVdGMg Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFOqi0Wry0BWjoQKURAt3tAJ9+m3+l/IYt/SvwndCVuYSiQtjixACgix1J 8r91RNiWeqH6eNNctyLQ044= =Ex1s -----END PGP SIGNATURE----- --gKMricLos+KVdGMg--
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