Re: [PATCH net-next 0/3] net: ipv4/ipv6: new option to accept garp/untracked na only if in-network

[Jaehee]

On Mon, Jul 11, 2022 at 10:51 AM Jaehee Park <jhpark1013@xxxxxxxxx> wrote:
>
> The first patch adds an option to learn a neighbor from garp only if
> the src ip is in the same subnet of addresses configured on the
> interface. The option has been added to arp_accept in ipv4.
>
> The same feature has been added to ndisc (patch 2). For ipv6, the
> subnet filtering knob is an extension of the accept_untracked_na
> option introduced in these patches:
> https://lore.kernel.org/all/642672cb-8b11-c78f-8975-f287ece9e89e@xxxxxxxxx/t/
> https://lore.kernel.org/netdev/20220530101414.65439-1-aajith@xxxxxxxxxx/T/
>
> The third patch contains selftests for testing the different options
> for accepting arp and neighbor advertisements.
>
> Jaehee Park (3):
>   net: ipv4: new arp_accept option to accept garp only if in-network
>   net: ipv6: new accept_untracked_na option to accept na only if
>     in-network
>   selftests: net: arp_ndisc_untracked_subnets: test for arp_accept and
>     accept_untracked_na
>
>  Documentation/networking/ip-sysctl.rst        |  48 +--
>  include/linux/inetdevice.h                    |   2 +-
>  net/ipv4/arp.c                                |  24 +-
>  net/ipv6/addrconf.c                           |   2 +-
>  net/ipv6/ndisc.c                              |  29 +-
>  tools/testing/selftests/net/Makefile          |   1 +
>  .../net/arp_ndisc_untracked_subnets.sh        | 281 ++++++++++++++++++
>  7 files changed, 360 insertions(+), 27 deletions(-)
>  create mode 100755 tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
>
> --
> 2.30.2
>


I forgot a few cleanups. I will post a v2 soon.
Sorry about that!

Thanks,
Jaehee