Re: [PATCH net-next 00/10] rxrpc: Miscellaneous fixes

From: David Miller
Date: Fri Sep 16 2016 - 01:55:22 EST


From: David Howells <dhowells@xxxxxxxxxx>
Date: Tue, 13 Sep 2016 23:20:56 +0100

>
> Here's a set of miscellaneous fix patches. There are a couple of points of
> note:
>
> (1) There is one non-fix patch that adjusts the call ref tracking
> tracepoint to make kernel API-held refs on calls more obvious. This
> is a prerequisite for the patch that fixes prealloc refcounting.
>
> (2) The final patch alters how jumbo packets that partially exceed the
> receive window are handled. Previously, space was being left in the
> Rx buffer for them, but this significantly hurts performance as the Rx
> window can't be increased to match the OpenAFS Tx window size.
>
> Instead, the excess subpackets are discarded and an EXCEEDS_WINDOW ACK
> is generated for the first. To avoid the problem of someone trying to
> run the kernel out of space by feeding the kernel a series of
> overlapping maximal jumbo packets, we stop allowing jumbo packets on a
> call if we encounter more than three jumbo packets with duplicate or
> excessive subpackets.
...
> Tagged thusly:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
> rxrpc-rewrite-20160913-1

Pulled, thanks David.