[ovs-dev] [PATCH 05/12] ct-dpif: Add conntrack timeout policy support in dpif layer

[Yi-Hung Wei]

On Mon, Jul 29, 2019 at 1:12 PM Darrell Ball <dlu998 at gmail.com> wrote:
>> > "is_default" - can you explain this one ?
>>
>> This flag is used to configure the default timeout policy in the
>> datapath.  If 'is_default' is true, it will set the provided timeout
>> policy to be the default timeout policy. The default timeout policy is
>> documented in vswitchd/vswitch.xml
>>
>
> Below is what I see the the schema xml file under timeout policy
> Please add description about the 'default' timeout policy under
> "CT_Timeout_Policy" - let me know if you need help, as I can submit a patch.

It is a few lines before what you pasted below.

<table name="CT_Zone">
  Connection tracking zone configuration

  <column name="timeout_policy">
    Connection tracking timeout policy for this zone. If timeout policy is
    not specified, defaults to the timeout policy in the default zone.  If
    the timeout policy in default zone is not specified, defaults to the
    default timeouts in the system.
  </column>

  <group title="Common Columns">
    The overall purpose of these columns is described under <code>Common
    Columns</code> at the beginning of this document.

    <column name="external_ids"/>
  </group>
</table>


-Yi-Hung
>
>   <table name="CT_Timeout_Policy">
>     Connection tracking timeout policy configuration
>
>     <group title="Timeouts">
>       <column name="timeouts">
>           The <code>timeouts</code> column contains key-value pairs used
>           to configure connection tracking timeouts in a datapath.
>           Key-value pairs that are not supported by a datapath are
>           ignored.
>       </column>
>
>       <group title="TCP Timeouts">
>         <column name="timeouts" key="tcp_syn_sent">
>           TCP SYN sent timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_syn_recv">
>           TCP SYN receive timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_established">
>           TCP established timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_fin_wait">
>           TCP FIN wait timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_close_wait">
>           TCP close wait timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_last_ack">
>           TCP last ACK timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_time_wait">
>           TCP time wait timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_close">
>           TCP close timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_syn_sent2">
>           TCP syn sent2 timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_retransmit">
>           TCP retransmit timeout.
>         </column>
>
>         <column name="timeouts" key="tcp_unack">
>           TCP unacknowledgment timeout.
>         </column>
>       </group>
>
>       <group title="UDP Timeouts">
>         <column name="timeouts" key="udp_first">
>           First UDP packet timeout.
>         </column>
>
>         <column name="timeouts" key="udp_single">
>           The timeout in the state that source host sends more than one packet
>           but the destination host has never sent one backs.
>         </column>
>
>         <column name="timeouts" key="udp_multiple">
>           UDP packets seen in both directions timeout.
>         </column>
>       </group>
>
>       <group title="ICMP Timeouts">
>         <column name="timeouts" key="icmp_first">
>           First ICMP timeout.
>         </column>
>
>         <column name="timeouts" key="icmp_reply">
>           ICMP reply timeout.
>         </column>
>       </group>
>     </group>