Re: [PATCH v8] PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)

[Eric Dumazet <eric.dumazet@gmail.com>]

Le samedi 21 août 2010 à 10:40 +0400, Dmitry Kozlov a écrit :
> PPP: introduce "pptp" module which implements point-to-point tunneling protocol using pppox framework
> NET: introduce the "gre" module for demultiplexing GRE packets on version criteria 
>      (required to pptp and ip_gre may coexists)
> NET: ip_gre: update to use the "gre" module
> 
> Signed-off-by: Dmitry Kozlov <xeb@mail.ru>
> ---
> This patch introduces then pptp support to the linux kernel which
> dramatically speeds up pptp vpn connections and decreases cpu usage in
> comparison of existing user-space implementation (poptop/pptpclient).
> There is accel-pptp project
> (https://sourceforge.net/projects/accel-pptp/) to utilize this module,
> it contains plugin for pppd to use pptp in client-mode and modified
> pptpd (poptop) to build high-performance pptp NAS.
> 
> There was many changes from initial submitted patch, most important
> are:
> 1. using rcu instead of read-write locks
> 2. using static bitmap instead of dynamically allocated
> 3. using vmalloc for memory allocation instead of BITS_PER_LONG +
> __get_free_pages
> 4. fixed many coding style issues
> Thanks to Eric Dumazet.
> 
> --
>  MAINTAINERS              |   14 +
>  drivers/net/Kconfig      |   11 +
>  drivers/net/Makefile     |    1 +
>  drivers/net/pptp.c       |  726 ++++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/if_pppox.h |   59 +++--
>  include/net/gre.h        |   18 ++
>  net/ipv4/Kconfig         |    7 +
>  net/ipv4/Makefile        |    1 +
>  net/ipv4/gre.c           |  151 ++++++++++
>  net/ipv4/ip_gre.c        |   14 +-
>  10 files changed, 975 insertions(+), 27 deletions(-)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Thanks Dmitry !