Re: [IPSEC] Move hardware headers for decaped packets

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Hello!

> > Actually if we require that upon entry into netif_rx that
> > skb->nh.raw and skb->mac.raw are set correctly

We used to require this.


> >						 and are next
> > to each other, then we can avoid having to get mac_len right.
> > 
> > This is what the following patch does.

I am afraid I do not understand this. mac_len is required only when
you do not memcopy mac header keeping it in place instead. The patch
makes memmove, so what is the point in keeping mac_len?
 

> And the idea is to replace all of the:
>
>       skb_push(skb, skb->data - skb->mac.raw);
>
> with:
>
>       skb_push(skb, skb->maclen);
>
> Right?   

Such skb_push was used only in packet socket. There are no reasons
to do this there. When the mac header is split we just do copy_to_user
in two parts: mac header first and than all the network layer payload.
Code really will look nicer, than it is now.

Alexey
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