lkml.org 
[lkml]   [2019]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH net-next 1/3] net: rework SIOCGSTAMP ioctl handling
On Tue, Apr 16, 2019 at 4:38 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> The SIOCGSTAMP/SIOCGSTAMPNS ioctl commands are implemented by many
> socket protocol handlers, and all of those end up calling the same
> sock_get_timestamp()/sock_get_timestampns() helper functions, which
> results in a lot of duplicate code.
>
> With the introduction of 64-bit time_t on 32-bit architectures, this
> gets worse, as we then need four different ioctl commands in each
> socket protocol implementation.
>
> To simplify that, let's add a new .gettstamp() operation in
> struct proto_ops, and move ioctl implementation into the common
> sock_ioctl()/compat_sock_ioctl_trans() functions that these all go
> through.
>
> We can reuse the sock_get_timestamp() implementation, but generalize
> it so it can deal with both native and compat mode, as well as
> timeval and timespec structures.
>
> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
> Link: https://lore.kernel.org/lkml/CAK8P3a038aDQQotzua_QtKGhq8O9n+rdiz2=WDCp82ys8eUT+A@mail.gmail.com/
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> v2: reworked to not break sparc64 support

From the discussion of v1 I thought you planned to unconditionally
call sock_gettstamp() for all protocols, avoiding the need to plumb in
all these new callbacks?

That is more concise, though this closer to the existing behavior. So,
fine either way.

\
 
 \ /
  Last update: 2019-04-17 16:47    [W:0.448 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site