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

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Message-ID:
 <PAXPR04MB8510E8884DEEA3888BCAC5DB88002@PAXPR04MB8510.eurprd04.prod.outlook.com>
Date: Sat, 21 Dec 2024 01:54:02 +0000
From: Wei Fang <wei.fang@....com>
To: Stanislav Fomichev <stfomichev@...il.com>
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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:

Oh, I was not aware of that the same patch had been applied to
bpf-next tree, thanks for reminder.