Re: a question on skb_copy_expand

On Fri, Jan 10, 2003 at 10:10:20AM +0800, ³Âì¿ wrote:
> hi,
>     in freeswan-1.97/klips/net/ipsec/ipsec_tunnel.c, at line 1349, we will use skb_copy_expand to creat a tskb.At line 1985, we will free the oskb.
>     I want to know if oskb's next pointer and prev pointer is not null, then is it necessary to modify tskb's next pointer and prev pointer ?

I have no idea what you are talking about.  skbs don't have prev and
next pointers.

>     By the way, I want to know the difference between TCP and UDP on
>     sk_buff organization.Does TCP use a chain to organize sk_buff, and
>     will not kfree them until the response come?On the contrary, UDP
>     will kfree the sk_buff when the sk_buff has been sent out? thanks
>     very much!!!

No difference.  The sk_buff doesn't know about them other than knowing
where they start.


	slainte mhath, RGB

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