netdev - [PATCH net-next 0/2] ipv4: Invalidate neighbour for broadcast address upon address addition

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Message-Id: <20220219154520.344057-1-idosch@nvidia.com>
Date:   Sat, 19 Feb 2022 17:45:18 +0200
From:   Ido Schimmel <idosch@...dia.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, dsahern@...il.com,
        wanghai38@...wei.com, mlxsw@...dia.com,
        Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 0/2] ipv4: Invalidate neighbour for broadcast address upon address addition

Patch #1 solves a recently reported issue [1]. See detailed description
in the changelog.

Patch #2 adds a matching test case.

Targeting at net-next since as far as I can tell this use case never
worked.

There are no regressions in fib_tests.sh with this change:

 # ./fib_tests.sh
 ...
 Tests passed: 186
 Tests failed:   0

[1] https://lore.kernel.org/netdev/55a04a8f-56f3-f73c-2aea-2195923f09d1@huawei.com/

Ido Schimmel (2):
  ipv4: Invalidate neighbour for broadcast address upon address addition
  selftests: fib_test: Add a test case for IPv4 broadcast neighbours

 include/net/arp.h                        |  1 +
 net/ipv4/arp.c                           |  9 +++-
 net/ipv4/fib_frontend.c                  |  5 +-
 tools/testing/selftests/net/fib_tests.sh | 58 +++++++++++++++++++++++-
 4 files changed, 69 insertions(+), 4 deletions(-)

-- 
2.33.1