netdev
[Top] [All Lists]

Re: alignment issues on netif_rx

To: jes@xxxxxxxxxxxxx (Jes Sorensen)
Subject: Re: alignment issues on netif_rx
From: kuznet@xxxxxxxxxxxxx
Date: Mon, 18 Dec 2000 22:30:31 +0300 (MSK)
Cc: netdev@xxxxxxxxxxx, davem@xxxxxxxxxx
In-reply-to: <d3zohttu8l.fsf@xxxxxxxxxxxxxxxxx> from "Jes Sorensen" at Dec 18, 0 08:16:58 pm
Sender: owner-netdev@xxxxxxxxxxx
Hello!

> The problem is that some cards like the Tulip and Starfire don't allow
> misaligned DMA.

Aligned dma can be always used and, if protocol happens to be ethernet II,
headers can be copied for faulty architectures. Actually, I am even not sure
that misaligned accesses for intel are better than copy.

Alexey

<Prev in Thread] Current Thread [Next in Thread>