netdev - [PATCH net-next v2 0/2] Add support for externally validated neighbor entries

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: <20250626073111.244534-1-idosch@nvidia.com>
Date: Thu, 26 Jun 2025 10:31:09 +0300
From: Ido Schimmel <idosch@...dia.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<edumazet@...gle.com>, <horms@...nel.org>, <donald.hunter@...il.com>,
	<petrm@...dia.com>, <razor@...ckwall.org>, <daniel@...earbox.net>, "Ido
 Schimmel" <idosch@...dia.com>
Subject: [PATCH net-next v2 0/2] Add support for externally validated neighbor entries

Patch #1 adds a new neighbor flag ("extern_valid") that prevents the
kernel from invalidating or removing a neighbor entry, while allowing
the kernel to notify user space when the entry becomes reachable. See
motivation and implementation details in the commit message.

Patch #2 adds a selftest.

Changes since v1 [1]:

* Patch #1: s/neigbor/neighbor/ in comment.
* Patch #1: Do not flush "extern_valid" entries upon carrier down.
* Patch #1: Reword some parts of the commit message.
* Patch #2: Fix various shellcheck warnings.
* Patch #2: Add tests for interface and carrier down.

[1] https://lore.kernel.org/netdev/20250611141551.462569-1-idosch@nvidia.com/

Ido Schimmel (2):
  neighbor: Add NTF_EXT_VALIDATED flag for externally validated entries
  selftests: net: Add a selftest for externally validated neighbor
    entries

 Documentation/netlink/specs/rt-neigh.yaml |   1 +
 include/net/neighbour.h                   |   4 +-
 include/uapi/linux/neighbour.h            |   5 +
 net/core/neighbour.c                      |  79 ++++-
 tools/testing/selftests/net/Makefile      |   1 +
 tools/testing/selftests/net/test_neigh.sh | 366 ++++++++++++++++++++++
 6 files changed, 445 insertions(+), 11 deletions(-)
 create mode 100755 tools/testing/selftests/net/test_neigh.sh

-- 
2.49.0