Re: [PATCH net-next v3 0/7] mptcp: out-of-order queue pruning

[Paolo Abeni]

On 8/7/26 3:49 PM, Matthieu Baerts (NGI0) wrote:
> Under memory pressure, a pruning of the MPTCP-level OoO queue might be
> required as last resort, to avoid too long recoveries, or even stalls.
> Geliang and Gang managed to reproduce this behaviour, and Paolo
> improved the situation thanks to the following patches:
> 
> - Patches 1-3: improve the MPTCP-level retransmission schema to make
>   recoveries from memory pressure/after MPTCP-level drop significantly
>   faster.
> 
> - Patches 4-5: make the admission check way stricter for incoming
>   packets exceeding the memory limits, with some exceptions for fallback
>   sockets.
> 
> - Patches 6-7: implement OoO queue pruning for MPTCP.
> 
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
Sashiko has a few comments on this series, but IMHO only patches 2 and 7
really need some adjustment, and changes there (fix the stale/retrans
race, wrong unlikely, and too early OoO prune) should be handled as
follow-ups.

/P