netdev - Re: [PATCH net-next] selftests: openvswitch: don't hardcode the drop reason subsys

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Message-ID: <Z8eX_WaLGCrM8QhA@mini-arch>
Date: Tue, 4 Mar 2025 16:17:01 -0800
From: Stanislav Fomichev <stfomichev@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
	pabeni@...hat.com, andrew+netdev@...n.ch, horms@...nel.org,
	shuah@...nel.org, pshelar@....org, aconole@...hat.com,
	amorenoz@...hat.com, linux-kselftest@...r.kernel.org,
	dev@...nvswitch.org
Subject: Re: [PATCH net-next] selftests: openvswitch: don't hardcode the drop
 reason subsys

On 03/04, Jakub Kicinski wrote:
> WiFi removed one of their subsys entries from drop reasons, in
> commit 286e69677065 ("wifi: mac80211: Drop cooked monitor support")
> SKB_DROP_REASON_SUBSYS_OPENVSWITCH is now 2 not 3.
> The drop reasons are not uAPI, read the correct value
> from debug info.
> 
> We need to enable vmlinux BTF, otherwise pahole needs
> a few GB of memory to decode the enum name.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Acked-by: Stanislav Fomichev <sdf@...ichev.me>

Might have resolved OVS_DROP_FLOW_ACTION and the rest as well via
pahole, but assuming these won't be reordered/removed too often..