From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen)
To: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
Netdev <netdev@vger.kernel.org>,
intel-wired-lan <intel-wired-lan@lists.osuosl.org>
Subject: Re: [Intel-wired-lan] i40e X722 RSS problem with NAT-Traversal IPsec packets
Date: Tue, 21 May 2019 13:54:56 -0400 [thread overview]
Message-ID: <20190521175456.zlkiiov5hry2l4q2@csclub.uwaterloo.ca> (raw)
In-Reply-To: <CAKgT0UfpZ-ve3Hx26gDkb+YTDHvN3=MJ7NZd2NE7ewF5g=kHHw@mail.gmail.com>
On Tue, May 21, 2019 at 09:51:33AM -0700, Alexander Duyck wrote:
> I think we need to narrow this down a bit more. Let's try forcing the
> lookup table all to one value and see if traffic is still going to
> queue 0.
>
> Specifically what we need to is run the following command to try and
> force all RSS traffic to queue 8, you can verify the result with
> "ethtool -x":
> ethtool -X <iface> weight 0 0 0 0 0 0 0 0 1
>
> If that works and the IPSec traffic goes to queue 8 then we are likely
> looking at some sort of input issue, either in the parsing or the
> population of things like the input mask that we can then debug
> further.
>
> If traffic still goes to queue 0 then that tells us the output of the
> RSS hash and lookup table are being ignored, this would imply either
> some other filter is rerouting the traffic or is directing us to limit
> the queue index to 0 bits.
# ethtool -x eth2
RX flow hash indirection table for eth2 with 12 RX ring(s):
0: 7 7 7 7 7 7 7 7
8: 7 7 7 7 7 7 7 7
16: 7 7 7 7 7 7 7 7
24: 7 7 7 7 7 7 7 7
32: 7 7 7 7 7 7 7 7
...
472: 7 7 7 7 7 7 7 7
480: 7 7 7 7 7 7 7 7
488: 7 7 7 7 7 7 7 7
496: 7 7 7 7 7 7 7 7
504: 7 7 7 7 7 7 7 7
RSS hash key:
0b:1f:ae:ed:60:04:7d:e5:8a:2b:43:3f:1d:ee:6c:99:89:29:94:b0:25:db:c7:4b:fa:da:4d:3f:e8:cc:bc:00:ad:32:01:d6:1c:30:3f:f8:79:3e:f4:48:04:1f:51:d2:5a:39:f0:90
root@ECA:~# ethtool --show-priv-flags eth2
Private flags for eth2:
MFP : off
LinkPolling : off
flow-director-atr: off
veb-stats : off
hw-atr-eviction : on
legacy-rx : off
All ipsec packets are still hitting queue 0.
Seems it is completely ignoring RSS for these packets. That is
impressively weird.
--
Len Sorensen
next prev parent reply other threads:[~2019-05-21 17:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-01 20:52 i40e X722 RSS problem with NAT-Traversal IPsec packets Lennart Sorensen
2019-05-01 22:52 ` [Intel-wired-lan] " Alexander Duyck
2019-05-02 15:11 ` Lennart Sorensen
2019-05-02 17:03 ` Alexander Duyck
2019-05-02 17:16 ` Lennart Sorensen
2019-05-02 17:28 ` Alexander Duyck
2019-05-02 17:55 ` Lennart Sorensen
2019-05-02 18:52 ` Lennart Sorensen
2019-05-02 20:59 ` Alexander Duyck
2019-05-03 15:14 ` Lennart Sorensen
2019-05-03 17:19 ` Alexander Duyck
2019-05-03 20:59 ` Lennart Sorensen
2019-05-13 16:55 ` Lennart Sorensen
2019-05-13 19:04 ` Alexander Duyck
2019-05-14 16:34 ` Lennart Sorensen
2019-05-16 17:10 ` Alexander Duyck
2019-05-16 18:34 ` Lennart Sorensen
2019-05-16 18:37 ` Lennart Sorensen
2019-05-16 23:32 ` Alexander Duyck
2019-05-17 16:42 ` Alexander Duyck
2019-05-17 17:23 ` Lennart Sorensen
2019-05-17 22:20 ` Alexander Duyck
2019-05-21 15:15 ` Lennart Sorensen
2019-05-21 16:51 ` Alexander Duyck
2019-05-21 17:54 ` Lennart Sorensen [this message]
2019-05-21 23:22 ` Alexander Duyck
2019-05-22 14:39 ` Lennart Sorensen
2019-06-07 14:39 ` Lennart Sorensen
2019-06-07 19:32 ` Alexander Duyck
2019-06-07 20:49 ` [E1000-devel] " Hisashi T Fujinaka
2019-06-07 22:08 ` Fujinaka, Todd
2019-06-10 19:01 ` Lennart Sorensen
2020-02-07 21:51 ` Lennart Sorensen
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