netdev - Re: [PATCH] ucc_geth: add support for netpoll

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Message-ID: <20071031215903.GA1287@zarina>
Date:	Thu, 1 Nov 2007 00:59:03 +0300
From:	Anton Vorontsov <cbou@...l.ru>
To:	Li Yang-r58472 <LeoLi@...escale.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH] ucc_geth: add support for netpoll

On Mon, Oct 29, 2007 at 03:17:44PM +0300, Anton Vorontsov wrote:
[...]
> > Oops.  The original patch happened to hit the Junk mail box. :(
> 
> That one as well? http://lkml.org/lkml/2007/10/11/128
> 
> > I think
> > the patch is good to merge after the cosmetic change.  I can do it in
> > next pull request to Jeff.
> 
> Ok, great. Thanks.

I'm wondering if you missed that email again. Maybe your mail
client/server doing weird things with emails from @ru.mvista.com?

Thanks.

> Here it is:
> 
> - - - -
> From: Anton Vorontsov <avorontsov@...mvista.com>
> Subject: [PATCH] ucc_geth: add support for netpoll
> 
> This patch adds netpoll support for the QE UCC Gigabit Ethernet
> driver. Tested using netconsole and KGDBoE.
> 
> Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
> ---
>  drivers/net/ucc_geth.c |   20 ++++++++++++++++++++
>  1 files changed, 20 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
> index bec413b..94e78d8 100644
> --- a/drivers/net/ucc_geth.c
> +++ b/drivers/net/ucc_geth.c
> @@ -3678,6 +3678,23 @@ static irqreturn_t ucc_geth_irq_handler(int irq, void *info)
>  	return IRQ_HANDLED;
>  }
>  
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +/*
> + * Polling 'interrupt' - used by things like netconsole to send skbs
> + * without having to re-enable interrupts. It's not called while
> + * the interrupt routine is executing.
> + */
> +static void ucc_netpoll(struct net_device *dev)
> +{
> +	struct ucc_geth_private *ugeth = netdev_priv(dev);
> +	int irq = ugeth->ug_info->uf_info.irq;
> +
> +	disable_irq(irq);
> +	ucc_geth_irq_handler(irq, dev);
> +	enable_irq(irq);
> +}
> +#endif /* CONFIG_NET_POLL_CONTROLLER */
> +
>  /* Called when something needs to use the ethernet device */
>  /* Returns 0 for success. */
>  static int ucc_geth_open(struct net_device *dev)
> @@ -3963,6 +3980,9 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
>  #ifdef CONFIG_UGETH_NAPI
>  	netif_napi_add(dev, &ugeth->napi, ucc_geth_poll, UCC_GETH_DEV_WEIGHT);
>  #endif				/* CONFIG_UGETH_NAPI */
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +	dev->poll_controller = ucc_netpoll;
> +#endif
>  	dev->stop = ucc_geth_close;
>  //    dev->change_mtu = ucc_geth_change_mtu;
>  	dev->mtu = 1500;
> -- 
> 1.5.2.2

-- 
Anton Vorontsov
email: cbou@...l.ru
backup email: ya-cbou@...dex.ru
irc://irc.freenode.net/bd2
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