could you please add more description to this report since
it's very hard to follow and interpret your mail.

On 20 November 2013 12:11, Alexey Suslikov <[email protected]> wrote:
> Hi.
>
> This is on 5.4-stable. Trivial master/slave carp(4) setup. vlan(4) is to
> make picture clear wrt prio.
>
> Test 1 (without using match).
>
> pf.conf (BOX1 and BOX2).
>
> ext_if="vlan101"
> dmz_if="vlan10"
> pf_sync="vlan50"
> block log all
> pass quick on $pf_sync proto pfsync keep state (no-sync) set prio 7
> pass quick on { $ext_if, $dmz_if } proto carp keep state (no-sync)
> pass quick on $dmz_if inet proto icmp all icmp-type echoreq set prio 5
> pass quick on $dmz_if
> pass out quick on $ext_if inet proto icmp all icmp-type echoreq set prio 5
> pass out quick on $ext_if
>
> BOX1 is Master, BOX2 is Slave.
>
> BOX1:
> 00:07:36.108948 802.1Q vid 10 pri 3 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:07:36.109281 802.1Q vid 101 pri 5 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:07:36.110013 802.1Q vid 101 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
> 00:07:36.110030 802.1Q vid 10 pri 5 X.X.36.14 > X.X.185.145: icmp: echo reply
>
> BOX1 is Slave, BOX2 is Master.
>
> BOX2:
> 00:12:43.981979 802.1Q vid 10 pri 3 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:12:43.982013 802.1Q vid 101 pri 0 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:12:43.982693 802.1Q vid 101 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
> 00:12:43.982713 802.1Q vid 10 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
>
> Test 2 (using match).
>
> pf.conf (BOX1 and BOX2).
>
> ext_if="vlan101"
> dmz_if="vlan10"
> pf_sync="vlan50"
> block log all
> match quick on { $ext_if, $dmz_if } inet proto icmp all icmp-type
> echoreq set prio 5
> pass quick on $pf_sync proto pfsync keep state (no-sync) set prio 7
> pass quick on { $ext_if, $dmz_if } proto carp keep state (no-sync)
> pass quick on $dmz_if
> pass out quick on $ext_if
>
> BOX1 is Master, BOX2 is Slave.
>
> BOX1:
> 00:27:47.442820 802.1Q vid 10 pri 3 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:27:47.442839 802.1Q vid 101 pri 5 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:27:48.468709 802.1Q vid 101 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
> 00:27:47.443523 802.1Q vid 10 pri 5 X.X.36.14 > X.X.185.145: icmp: echo reply
>
> BOX1 is Slave, BOX2 is Master.
>
> BOX2:
> 00:30:35.317329 802.1Q vid 10 pri 3 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:30:35.317354 802.1Q vid 101 pri 0 X.X.185.145 > X.X.36.14: icmp: echo 
> request
> 00:30:35.318065 802.1Q vid 101 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
> 00:30:35.318084 802.1Q vid 10 pri 0 X.X.36.14 > X.X.185.145: icmp: echo reply
>
> Maybe ICMP is not a sort of traffic which makes difference, but think
> about TCP ACKs are prioritized. Switching to Slave in production setup
> makes things *REALLY* bad.
>
> Should I configure something, or this is an issue?
>
> (Speaking of pfsync code, I'm unable to find where prio is set inside
> pfsync_state_import).
>
> Thanks,
> Alexey
>

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