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

[David Miller]

From: David Howells 
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.

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

[David Miller]

From: David Howells 
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.