netdev - RE: [PATCH net-next v27 07/13] rtase: Implement a function to receive packets

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Message-ID: <3adea6bbe1384e0ea6a06f4343d03ac2@realtek.com>
Date: Fri, 16 Aug 2024 07:50:45 +0000
From: Justin Lai <justinlai0215@...ltek.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com"
	<edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "andrew@...n.ch"
	<andrew@...n.ch>,
        "jiri@...nulli.us" <jiri@...nulli.us>,
        "horms@...nel.org"
	<horms@...nel.org>,
        "rkannoth@...vell.com" <rkannoth@...vell.com>,
        "jdamato@...tly.com" <jdamato@...tly.com>,
        Ping-Ke Shih <pkshih@...ltek.com>, Larry Chiu <larry.chiu@...ltek.com>
Subject: RE: [PATCH net-next v27 07/13] rtase: Implement a function to receive packets

> On Mon, 12 Aug 2024 14:35:33 +0800 Justin Lai wrote:
> > +     if (!delta && workdone)
> > +             netdev_info(dev, "no Rx buffer allocated\n");
> > +
> > +     ring->dirty_idx += delta;
> > +
> > +     if ((ring->dirty_idx + RTASE_NUM_DESC) == ring->cur_idx)
> > +             netdev_emerg(dev, "Rx buffers exhausted\n");
> 
> Memory allocation failures happen, we shouldn't risk spamming the logs.
> I mean these two messages and the one in rtase_alloc_rx_data_buf(), the
> should be removed.
> 
> There is a alloc_fail statistic defined in include/net/netdev_queues.h that's the
> correct way to report buffer allocation failures.
> And you should have a periodic service task / work which checks for buffers
> being exhausted, and if they are schedule NAPI so that it tries to allocate.

Hi Jakub,

Thank you for the comments you provided. I will modify it.

Thanks
Justin