Evgeniy Polyakov schrieb:
> On Thu, Aug 03, 2006 at 07:16:31PM +0400, Evgeniy Polyakov (johnpol@2ka.mipt.ru) wrote:
>>>> then skb_alloc adds a little
>>>> (sizeof(struct skb_shared_info)) at the end, and this ends up
>>>> in 32k request just for 9k jumbo frame.
>>> Strange, why this skb_shared_info cannon be added before first alignment? 
>>> And what about smaller frames like 1500, does this driver behave similar 
>>> (first align then add)?
>> It can be.
>> Could attached  (completely untested) patch help?
> 
> Actually this patch will not help, this new one could.
> 

I applied the attached pachted. And got this output:

> Intel(R) PRO/1000 Network Driver - bufsz 13762
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16058
> Intel(R) PRO/1000 Network Driver - bufsz 15894
> Intel(R) PRO/1000 Network Driver - bufsz 15730
> Intel(R) PRO/1000 Network Driver - bufsz 15566
> Intel(R) PRO/1000 Network Driver - bufsz 15402
> Intel(R) PRO/1000 Network Driver - bufsz 15238
> Intel(R) PRO/1000 Network Driver - bufsz 15074
> Intel(R) PRO/1000 Network Driver - bufsz 14910
> Intel(R) PRO/1000 Network Driver - bufsz 14746
> Intel(R) PRO/1000 Network Driver - bufsz 14582
> Intel(R) PRO/1000 Network Driver - bufsz 14418
> Intel(R) PRO/1000 Network Driver - bufsz 14254
> Intel(R) PRO/1000 Network Driver - bufsz 14090
> Intel(R) PRO/1000 Network Driver - bufsz 13926
> Intel(R) PRO/1000 Network Driver - bufsz 13762
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16058
> Intel(R) PRO/1000 Network Driver - bufsz 15894
> Intel(R) PRO/1000 Network Driver - bufsz 15730
> Intel(R) PRO/1000 Network Driver - bufsz 15566
> Intel(R) PRO/1000 Network Driver - bufsz 15402
> Intel(R) PRO/1000 Network Driver - bufsz 15238
> Intel(R) PRO/1000 Network Driver - bufsz 15074
> Intel(R) PRO/1000 Network Driver - bufsz 14910
> Intel(R) PRO/1000 Network Driver - bufsz 14746
> Intel(R) PRO/1000 Network Driver - bufsz 14582
> Intel(R) PRO/1000 Network Driver - bufsz 14418
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222
> Intel(R) PRO/1000 Network Driver - bufsz 16222

I'm a bit puzzled that there are so much allocations. However the patch
seems to work. (at least not obviously breaks things for me yet)

Best regards
Arnd