Re: [net PATCH] atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring

David Miller
2013-07-31T02:11:42Z

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 29 Jul 2013 10:24:04 -0700

> [PATCH] atl1c: use custom skb allocator
>
> We had reports ( https://bugzilla.kernel.org/show_bug.cgi?id=54021 )
> that using high order pages for skb allocations is problematic for atl1c
>
> We do not know exactly what the problem is, but we suspect that crossing
> 4K pages is not well supported by this hardware.
>
> Use a custom allocator, using page allocator and 2K fragments for
> optimal stack behavior. We might make this allocator generic
> in future kernels.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>

Theoretically we'll still potentially hit this with > PAGE_SIZE
MTUs....

But whatever, this is a step in the positive direction so applied
and queued up for -stable, thanks Eric!