Hi Greg,
On 26/08/2024 14:04, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
>
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
Thank you for the notification!
(...)
> ------------------ original commit in Linus's tree ------------------
>
> From edd8b5d868a4d459f3065493001e293901af758d Mon Sep 17 00:00:00 2001
> From: "Matthieu Baerts (NGI0)" <matttbe@xxxxxxxxxx>
> Date: Mon, 19 Aug 2024 21:45:21 +0200
> Subject: [PATCH] mptcp: pm: re-using ID of unused removed subflows
>
> If no subflow is attached to the 'subflow' endpoint that is being
> removed, the addr ID will not be marked as available again.
>
> Mark the linked ID as available when removing the 'subflow' endpoint if
> no subflow is attached to it.
>
> While at it, the local_addr_used counter is decremented if the ID was
> marked as being used to reflect the reality, but also to allow adding
> new endpoints after that.
>
> Fixes: b6c08380860b ("mptcp: remove addr and subflow in PM netlink")
Similar to my previous message linked to the backport of "mptcp: pm:
re-using ID of unused removed ADD_ADDR" where this patch depends on
86e39e04482b ("mptcp: keep track of local endpoint still available for
each msk"), I don't think we need to backport this patch to v5.15.
Cheers,
Matt
--
Sponsored by the NGI0 Core fund.
