Re: alloc skb based on a given data buffer

David Miller
2009-09-15T08:33:10Z

From: Zhu Yi <yi.zhu@intel.com>
Date: Tue, 15 Sep 2009 16:30:20 +0800

> This way, device drivers can allocate the Rx buffers with their own size
> and alignment requirement. i.e. do an order-1 page allocation directly
> with free_pages() in the iwlagn driver for a 256 bytes aligned 8K Rx
> buffer. After DMA is finished, drivers can use the above function to
> assemble an skb based on the Rx buffer. It should resolve the problem
> for requiring an order-2 allocation by alloc_skb() in the first place.

You can create paged RX skbs just like drivers such as niu.c
and others already do, there is no need for special APIs for
this.