On 12/10/2014 01:52 AM, David Laight wrote:

From: David Laight

quoted

From: Alexander Duyck

quoted

This patch replaces the calls to netdev_alloc_skb_ip_align in the
copybreak paths.

Why?

You still want the IP header to be aligned and you also want the
memcpy() to be copying aligned data.

I suspect this fails on both counts?

Or am I confused by the naming?

	David

The bit you are missing is that napi_alloc_skb is always IP aligned. 
The general idea with napi_alloc_skb is that it is a cheaper way
allocate frames that are about to be passed up the stack as a NAPI or
GRO receive so the IP aligned part is a given.

- Alex