netdev - [PATCH v3 net-next 0/3] net: ipv4/ipv6: new option to accept garp/untracked na only if in-network

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <cover.1657755188.git.jhpark1013@gmail.com>
Date:   Wed, 13 Jul 2022 16:40:46 -0700
From:   Jaehee Park <jhpark1013@...il.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        dsahern@...il.com, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, shuah@...nel.org, linux-kernel@...r.kernel.org,
        aajith@...sta.com, roopa@...dia.com, roopa.prabhu@...il.com,
        aroulin@...dia.com, sbrivio@...hat.com, jhpark1013@...il.com
Subject: [PATCH v3 net-next 0/3] net: ipv4/ipv6: new option to accept garp/untracked na only if in-network

The first patch adds an option to learn a neighbor from garp only if
the source ip is in the same subnet as an address configured on the
interface that received the garp message. 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@gmail.com/t/
https://lore.kernel.org/netdev/20220530101414.65439-1-aajith@arista.com/T/

The third patch contains selftests for testing the different options
for accepting arp and neighbor advertisements. 

v3
- fixed tabs in the selftest

v2
- reworded documentation and commit messages
- cleanup selftest

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        |  52 +--
 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        | 308 ++++++++++++++++++
 7 files changed, 389 insertions(+), 29 deletions(-)
 create mode 100755 tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh

-- 
2.30.2