Re: RFC: pskb_expand_head instead of skb_copy in skb_checksum_help

["David S. Miller" <davem@xxxxxxxxxx>]

On Tue, 24 Aug 2004 21:05:32 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote:

> The idea is simple.  None of the callers of skb_checksum are passing it
> skb's which are shared.  They may be cloned however.  But the application
> checksum is always in the skb header so there is no need to linearise it.

What about looping back of multicast packets via netif_rx(),
is that handled correctly too?

I only mention it because that is the case that causes
problems elsewhere.

I'm going to think over this later today some more.