Re: [PATCH bpf-next v2] net, xdp: allow metadata > 32

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From: Larysa Zaremba <larysa.zaremba@xxxxxxxxx>
Date: Tue, 31 Oct 2023 18:57:37 +0100

It doesn't have "From: Alexa..." here, so that you'll be the author once
this is applied. Is this intended? ^.^

> 32 bytes may be not enough for some custom metadata. Relax the restriction,
> allow metadata larger than 32 bytes and make __skb_metadata_differs() work
> with bigger lengths.
> 
> Now size of metadata is only limited by the fact it is stored as u8
> in skb_shared_info, so the upper limit is now is 255. Other important
> conditions, such as having enough space for xdp_frame building, are already
> checked in bpf_xdp_adjust_meta().

[...]

Thanks,
Olek




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