netdev - Re: [PATCH] ucc_geth: Move freeing of TX packets to NAPI context.

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Date:	Wed, 25 Mar 2009 22:55:07 +0100
From:	Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
To:	David Miller <davem@...emloft.net>
Cc:	avorontsov@...mvista.com, dada1@...mosbay.com, leoli@...escale.com,
	linuxppc-dev@...abs.org, netdev@...r.kernel.org
Subject: Re: [PATCH] ucc_geth: Move freeing of TX packets to NAPI context.

David Miller <davem@...emloft.net> wrote on 25/03/2009 22:40:41:
> 
> From: Eric Dumazet <dada1@...mosbay.com>
> Date: Wed, 25 Mar 2009 15:04:26 +0100
> 
> > Joakim Tjernlund a écrit :
> > > +   /* Tx event processing */
> > > +   spin_lock(&ugeth->lock);
> > > +   for (i = 0; i < ug_info->numQueuesTx; i++) {
> > > +      ucc_geth_tx(ugeth->dev, i);
> > > +   }
> > > +   spin_unlock(&ugeth->lock);
> > > +
> > 
> > Why tx completions dont change "howmany" ?
> > It seems strange you changed UCC_GETH_DEV_WEIGHT if not taking into 
account tx event above...
> 
> He should leave howmany alone for TX work and use a weight
> value of 64 just like most other drivers in the tree do.

OK, will change this to 64.

> 
> Due to the abuse and random ignorant fiddling of the
> weight value, I am going to make it something the core
> rather than drivers choose.

Good, I had a hard time finding info how one should use it anyway. 

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