netdev - Re: [RFC PATCH 07/12] xfrm: Move child route linkage into xfrm

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Date:   Thu, 26 Oct 2017 09:03:11 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     David Miller <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>
Subject: Re: [RFC PATCH 07/12] xfrm: Move child route linkage into xfrm_dst.

On Wed, Oct 25, 2017 at 11:03:59PM +0900, David Miller wrote:
> 
> XFRM bundle child chains look like this:
> 
> 	xdst1 --> xdst2 --> xdst3 --> path_dst
> 
> All of xdstN are xfrm_dst objects and xdst->u.dst.xfrm is non-NULL.
> The final child pointer in the chain, here called 'path_dst', is some
> other kind of route such as an ipv4 or ipv6 one.
> 
> The xfrm output path pops routes, one at a time, via the child
> pointer, until we hit one which has a dst->xfrm pointer which
> is NULL.
> 
> We can easily preserve the above mechanisms with child sitting
> only in the xfrm_dst structure.  All children in the chain
> before we break out of the xfrm_output() loop have dst->xfrm
> non-NULL and are therefore xfrm_dst objects.
> 
> Since we break out of the loop when we find dst->xfrm NULL, we
> will not try to dereference 'dst' as if it were an xfrm_dst.
> 
> Signed-off-by: David S. Miller <davem@...emloft.net>

This one seems to be somewhat screwed up, it does not apply.
Looks like your mail contains two patches, both have some overlap.

You have:

> ---
>  include/net/dst.h  | 12 +-----------
>  include/net/xfrm.h | 14 ++++++++++++--
>  net/core/dst.c     |  2 +-
>  net/core/pktgen.c  | 12 ++++++------
>  4 files changed, 20 insertions(+), 20 deletions(-)
> 

And:

> ---
>  include/net/dst.h         |  3 +--
>  include/net/xfrm.h        | 13 +++++++++----
>  net/core/dst.c            |  9 ++++++---
>  net/core/pktgen.c         | 12 ++++++------
>  net/netfilter/xt_policy.c |  3 ++-
>  net/xfrm/xfrm_device.c    |  2 +-
>  6 files changed, 25 insertions(+), 17 deletions(-)
>