Re: [PATCH net-next 02/13] sk_buff: add skb extension infrastructure

[Eric Dumazet]

On 12/12/2018 10:44 AM, Florian Westphal wrote:

> We could do that, its probably enough for mptcp needs.
> This would keep nf_bridge and secpath pointers as-is and increase
> skb truesize.
> 
> If you prefer that, ok, but I don't see why we can't unify them behind
> a single layer?
> 

Well, for a start we do not use nf_brifge or secpath.

XDP is all about not unifying because unifying has a cost.

Do we really want to slow down the stack just because MPTCP is coming ?