* IPv6 traffic distribution problem with OVS group on 6.5
@ 2023-09-13 6:54 Quan Tian
2023-09-13 8:10 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Quan Tian @ 2023-09-13 6:54 UTC (permalink / raw)
To: stable; +Cc: qtian
Hi,
We found that OVS group always selected the same bucket for different L4
flows between two given IPv6 addresses on 6.5. It was because commit
e069ba07e6c7 ("net: openvswitch: add support for l4 symmetric hashing")
introduced support for symmetric hashing and used the flow dissector,
which had a problem that it didn't incorporate transport ports when
flow label is present in IPv6 header. The bug is fixed by this commit:
a5e2151ff9d5 ("net/ipv6: SKB symmetric hash should incorporate transport ports")
Could you please backport it to 6.5.y?
Issue: https://github.com/antrea-io/antrea/issues/5457
Thanks,
Quan
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: IPv6 traffic distribution problem with OVS group on 6.5
2023-09-13 6:54 IPv6 traffic distribution problem with OVS group on 6.5 Quan Tian
@ 2023-09-13 8:10 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2023-09-13 8:10 UTC (permalink / raw)
To: Quan Tian; +Cc: stable
On Wed, Sep 13, 2023 at 06:54:07AM +0000, Quan Tian wrote:
> Hi,
>
> We found that OVS group always selected the same bucket for different L4
> flows between two given IPv6 addresses on 6.5. It was because commit
> e069ba07e6c7 ("net: openvswitch: add support for l4 symmetric hashing")
> introduced support for symmetric hashing and used the flow dissector,
> which had a problem that it didn't incorporate transport ports when
> flow label is present in IPv6 header. The bug is fixed by this commit:
>
> a5e2151ff9d5 ("net/ipv6: SKB symmetric hash should incorporate transport ports")
>
> Could you please backport it to 6.5.y?
>
> Issue: https://github.com/antrea-io/antrea/issues/5457
Sure, now queued up.
greg k-h
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