linux-kernel - Re: [PATCH bpf] selftests/bpf: add XDP_UMEM_TX_METADATA_LEN flag to umem

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Message-ID: <Z2WMwPc9fj5kHcul@mini-arch>
Date: Fri, 20 Dec 2024 07:26:56 -0800
From: Stanislav Fomichev <stfomichev@...il.com>
To: Wei Fang <wei.fang@....com>
Cc: ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
	kuba@...nel.org, hawk@...nel.org, john.fastabend@...il.com,
	andrii@...nel.org, eddyz87@...il.com, mykolal@...com,
	martin.lau@...ux.dev, song@...nel.org, yonghong.song@...ux.dev,
	kpsingh@...nel.org, sdf@...ichev.me, haoluo@...gle.com,
	jolsa@...nel.org, shuah@...nel.org, netdev@...r.kernel.org,
	bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org, imx@...ts.linux.dev
Subject: Re: [PATCH bpf] selftests/bpf: add XDP_UMEM_TX_METADATA_LEN flag to
 umem_config

On 12/20, Wei Fang wrote:
> The Tx metadata test has been broken since the commit d5e726d9143c ("xsk:
> Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len"). Because
> this change requires XDP_UMEM_TX_METADATA_LEN flag to be set, otherwise
> xsk_buff_pool::tx_metadata_len will be initialized to 0, which means that
> the driver cannot get Tx metadata and cannot execute AF_XDP Tx metadata
> hooks.
> 
> Fixes: d5e726d9143c ("xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len")
> Signed-off-by: Wei Fang <wei.fang@....com>

Thanks for the patch, but it should have been fixed recently in:
https://lore.kernel.org/bpf/20241205044258.3155799-1-yoong.siang.song@intel.com/#t