From: Zoltan Kiss <zoltan.kiss@citrix.com>
To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Ian Campbell <Ian.Campbell@citrix.com>,
"David S. Miller" <davem@davemloft.net>, <netdev@vger.kernel.org>,
<xen-devel@lists.xen.org>
Subject: Re: [3.15-rc3] Bisected: xen-netback mangles packets between two guests on a bridge since merge of "TX grant mapping with SKBTX_DEV_ZEROCOPY instead of copy" series.
Date: Thu, 1 May 2014 14:49:45 +0100 [thread overview]
Message-ID: <536250F9.7060405@citrix.com> (raw)
In-Reply-To: <395225650.20140430124506@eikelenboom.it>
On 30/04/14 11:45, Sander Eikelenboom wrote:
> Another point would be: what *correctness* testing is actually done on the xen-net* patches ?
I can speak only about my patches: I have manually tested them for the
usecases where they likely to make a difference, plus they went through
Xenserver's full test suite several times.
> As i suspect this is again about fragmented packets .. that doesn't seem to be included in any test case while it actually seems to be a case which is hard to get right...
Beware, there are frags and frag_list which are two entirely different
things with confusing names. In netback case, frags are used to pass
through large packets for a long time. frag_list is used only since my
grant mapping patches, to handle older guests (see comment in
include/xen/interface/io/netif.h for XEN_NETIF_NR_SLOTS_MIN)
Zoli
next prev parent reply other threads:[~2014-05-01 13:49 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-30 10:45 [3.15-rc3] Bisected: xen-netback mangles packets between two guests on a bridge since merge of "TX grant mapping with SKBTX_DEV_ZEROCOPY instead of copy" series Sander Eikelenboom
2014-04-30 15:24 ` Eric Dumazet
2014-04-30 20:40 ` Zoltan Kiss
2014-04-30 20:53 ` Zoltan Kiss
2014-04-30 22:25 ` Sander Eikelenboom
2014-05-01 13:37 ` Zoltan Kiss
2014-05-01 13:59 ` Sander Eikelenboom
2014-05-01 15:46 ` Zoltan Kiss
2014-05-01 17:39 ` Sander Eikelenboom
2014-05-01 17:46 ` Eric Dumazet
2014-05-01 19:39 ` [Xen-devel] " Sander Eikelenboom
2014-05-02 14:00 ` Zoltan Kiss
2014-05-02 14:06 ` Sander Eikelenboom
2014-05-02 14:47 ` Zoltan Kiss
2014-05-02 15:21 ` Eric Dumazet
2014-05-02 15:26 ` Zoltan Kiss
2014-05-02 16:28 ` Sander Eikelenboom
2014-05-02 16:45 ` Zoltan Kiss
2014-05-05 10:19 ` Sander Eikelenboom
2014-05-06 17:07 ` Steven Haigh
2014-05-06 17:13 ` Zoltan Kiss
2014-05-06 17:37 ` Sander Eikelenboom
2014-05-06 18:07 ` Steven Haigh
2014-05-07 8:16 ` [Xen-devel] " David Vrabel
2014-05-16 2:13 ` Steven Haigh
2014-05-06 17:08 ` [Xen-devel] " Zoltan Kiss
2014-05-06 17:10 ` Zoltan Kiss
2014-05-06 17:33 ` Sander Eikelenboom
2014-05-01 13:49 ` Zoltan Kiss [this message]
2014-05-01 14:05 ` Sander Eikelenboom
2014-05-01 15:16 ` Zoltan Kiss
2014-05-01 15:40 ` Sander Eikelenboom
2014-05-02 15:35 ` Eric Dumazet
2014-05-02 22:18 ` Sander Eikelenboom
2014-05-09 22:19 ` Neal Cardwell
2014-05-09 21:02 ` Zoltan Kiss
2014-05-13 13:40 ` Zoltan Kiss
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