From: Paolo Abeni <pabeni@redhat.com>
To: Minxi Hou <houminxi@gmail.com>, netdev@vger.kernel.org
Cc: aconole@redhat.com, davem@davemloft.net, echaudro@redhat.com,
edumazet@google.com, horms@kernel.org, i.maximets@ovn.org,
kuba@kernel.org, shuah@kernel.org, dev@openvswitch.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH] selftests/openvswitch: guard command substitutions against empty output
Date: Tue, 9 Jun 2026 12:56:17 +0200 [thread overview]
Message-ID: <c530d07f-5841-4bfb-b296-b47fc0ce0614@redhat.com> (raw)
In-Reply-To: <20260601115307.1411211-1-houminxi@gmail.com>
On 6/1/26 1:53 PM, Minxi Hou wrote:
> When ip-link output is unavailable, when the upcall daemon log has not
> been written yet, or when pahole does not know the OVS drop subsystem
> ID, the affected command substitutions silently produce empty strings.
> The caller then passes empty sha= or pid= arguments to ovs_add_flow,
> or matches against wrong drop reason codes, all without a diagnostic.
>
> Add [ -z ] guards immediately after each assignment. For test_arp_ping,
> also align the MAC extraction to use awk '/link\/ether/' as in
> test_pop_vlan. The drop_reason guard returns ksft_skip because an
> absent subsystem ID is an environment issue, not a test failure.
>
> Signed-off-by: Minxi Hou <houminxi@gmail.com>
IMHO this is net-next material.
@Aaron, @Eelco, @Ilya: WDYT?
/P
next prev parent reply other threads:[~2026-06-09 10:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 11:53 [PATCH] selftests/openvswitch: guard command substitutions against empty output Minxi Hou
2026-06-09 10:56 ` Paolo Abeni [this message]
2026-06-09 12:54 ` Aaron Conole
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