linux-kernel - Re: [PATCH] sky2: jumbo frame regression fix

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Date:	Wed, 03 Oct 2007 03:34:34 +0200
From:	Ian Kumlien <pomac@...or.com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	Jeff Garzik <jgarzik@...ox.com>, Linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] sky2: jumbo frame regression fix

On tis, 2007-10-02 at 18:02 -0700, Stephen Hemminger wrote:
> Remove unneeded check that caused problems with jumbo frame sizes.
> The check was recently added and is wrong.
> When using jumbo frames the sky2 driver does fragmentation, so
> rx_data_size is less than mtu.

Confirmed working.

Now running with 9k mtu with no errors, =)

It also seems that the FIFO bug was the one that affected me before,
damn odd race that one.

> Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>
Tested-by: Ian Kumlien <pomac@...or.com>

(if that tag exists now)

Btw, Sorry but all mail directly to you will be blocked. I have yet to
fix the relaying properly with isp:s blocking port 25 etc so for some of
you this mail will only show up on the ML.

> --- a/drivers/net/sky2.c	2007-10-02 17:56:31.000000000 -0700
> +++ b/drivers/net/sky2.c	2007-10-02 17:58:56.000000000 -0700
> @@ -2163,9 +2163,6 @@ static struct sk_buff *sky2_receive(stru
>  	sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending;
>  	prefetch(sky2->rx_ring + sky2->rx_next);
>  
> -	if (length < ETH_ZLEN || length > sky2->rx_data_size)
> -		goto len_error;
> -
>  	/* This chip has hardware problems that generates bogus status.
>  	 * So do only marginal checking and expect higher level protocols
>  	 * to handle crap frames.
-- 
Ian Kumlien <pomac () vapor ! com> -- http://pomac.netswarm.net

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