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Line 2: − − ; Optimized restore − : Currently the whole outgoing queue is restored in a "all was sent, waiting for ACK-s" state. After this the data that was really not sent yet will be re-transmitted after a while. This will make the connection work, but will delay it for some time. Need to improve this. − − ; Window restore fix − : Currently what we do it send the window probe skb when repair is OFF. The other side should send us the response, but this process is not guaranteed to work. Need to fix this either by saving and restoring the window value, or by re-transmitting the probe again and again. − − ; Shutdown sockets repair − : Need to place checks in the inet shutdown code similar to those on connect/sendmsg paths. − − + Line 27:
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Line 43: + + + + + + + + + − [[Category:Fly in the ointment]]
no edit summary
TCP repair feature in the Linux kernel is supposed to help migrating a TCP socket. It's not yet complete and this page lists what is to be done.
TCP repair feature in the Linux kernel is supposed to help migrating a TCP socket. It's not yet complete and this page lists what is to be done.
; OOB data
; OOB data
: Nothing to say here actually. This data is just not supported currently.
: Nothing to say here actually. This data is just not supported currently.
== Done stuff ==
== Done stuff ==
; Transitional states
; Transitional states & Shutdown sockets repair
: Fixed in [[Download/criu/2.10|2.10]]
: Fixed in [[Download/criu/2.10|2.10]]
The half-opened connections on the server side can be dropped dump-time with the <code>--skip-in-flight</code> option. This helps in heavily loaded cases when such sockets appear often.
The half-opened connections on the server side can be dropped dump-time with the <code>--skip-in-flight</code> option. This helps in heavily loaded cases when such sockets appear often.
''For shutdown repair'': Need to place checks in the inet shutdown code similar to those on connect/sendmsg paths.
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; Window restore fix
: Fixed in [[Download/criu/2.5|2.5]]
<div class="toccolours mw-collapsible mw-collapsed" style="width:800px">
Old description:
<div class="mw-collapsible-content">
Currently what we do it send the window probe skb when repair is OFF. The other side should send us the response, but this process is not guaranteed to work. Need to fix this either by saving and restoring the window value, or by re-transmitting the probe again and again.
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</div>
</div>
</div>
</div>
</div>
; Optimized restore
: FIxed in [[Download/criu/1.0|1.0]]
<div class="toccolours mw-collapsible mw-collapsed" style="width:800px">
Old description:
<div class="mw-collapsible-content">
: Currently the whole outgoing queue is restored in a "all was sent, waiting for ACK-s" state. After this the data that was really not sent yet will be re-transmitted after a while. This will make the connection work, but will delay it for some time. Need to improve this.
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[[Category:Plans]]
[[Category:Plans]]
[[Category:Network]]
[[Category:Network]]