From: Hayes Wang <hayeswang@realtek.com>
To: David Miller <davem@davemloft.net>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
nic_swsd <nic_swsd@realtek.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>
Subject: RE: [PATCH net-next 2/2] r8152: adjust rtl_start_rx
Date: Thu, 13 Nov 2014 02:31:14 +0000 [thread overview]
Message-ID: <0835B3720019904CB8F7AA43166CEEB2ECE8EF@RTITMBSV03.realtek.com.tw> (raw)
In-Reply-To: <20141112.144949.645590790916569141.davem@davemloft.net>
David Miller [mailto:davem@davemloft.net]
> Sent: Thursday, November 13, 2014 3:50 AM
[...]
> > According to the usbnet.c, it would make sure to submit the
> > number of min(10, RX_QLEN(dev)) rx buffers. If there are
> > not enough rx buffers, it schedule a tasklet for next try.
> >
> > The brief flow is as following.
> > 1. Call open().
> > - schedule a tasklet.
> > 2. Tasklet is called.
> > if (dev->rxq.qlen < RX_QLEN(dev)) {
> > - submit rx buffers util the number of
> > min(10, RX_QLEN(dev)). If the error
> > occurs, break the loop.
> > - If the dev->rxq.qlen < RX_QLEN(dev),
> > schedule the tasklet.
> > }
>
> That sounds like a better recovery model, why don't you mimick it?
My last method which I mentioned yesterday is similar to
this one. The difference is that I would re-use the rx
buffers, so I have to add them to the list for re-submitting,
not alwayes allocate new one.
Although one rx buffer could contain many packets, I don't
think the whole size of the rx buffer is alwayes used.
Therefore, I re-use the rx buffers to avoid allocating
the 16K bytes rx buffer alwayes. This also makes sure that
I always have the buffers to submit without allocating new
one.
If you could accept this, I would modify this patch by
this way.
Best Regards,
Hayes
next prev parent reply other threads:[~2014-11-13 2:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 9:55 [PATCH net-next 0/2] r8152: adjust rx functions Hayes Wang
2014-11-07 9:55 ` [PATCH net-next 1/2] r8152: adjust r8152_submit_rx Hayes Wang
2014-11-07 9:55 ` [PATCH net-next 2/2] r8152: adjust rtl_start_rx Hayes Wang
2014-11-07 16:35 ` David Miller
2014-11-10 3:29 ` Hayes Wang
2014-11-12 2:50 ` David Miller
2014-11-12 5:07 ` Hayes Wang
2014-11-12 5:13 ` David Miller
2014-11-12 5:23 ` Hayes Wang
2014-11-12 5:43 ` David Miller
2014-11-12 6:29 ` Hayes Wang
2014-11-12 19:49 ` David Miller
2014-11-13 2:31 ` Hayes Wang [this message]
2014-11-13 3:31 ` David Miller
2014-11-13 21:22 ` David Miller
2014-11-14 5:14 ` Hayes Wang
2014-11-12 1:45 ` Hayes Wang
2014-11-12 2:19 ` David Miller
2014-11-12 2:30 ` Hayes Wang
2014-11-19 5:20 ` [PATCH net-next v2 0/2] r8152: adjust rx functions Hayes Wang
2014-11-19 5:20 ` [PATCH net-next v2 1/2] r8152: adjust r8152_submit_rx Hayes Wang
2014-11-19 14:02 ` Sergei Shtylyov
2014-11-19 5:20 ` [PATCH net-next v2 2/2] r8152: adjust rtl_start_rx Hayes Wang
2014-11-20 2:29 ` [PATCH net-next v3 0/2] r8152: adjust rx functions Hayes Wang
2014-11-20 2:29 ` [PATCH net-next v3 1/2] r8152: adjust r8152_submit_rx Hayes Wang
2014-11-20 2:29 ` [PATCH net-next v3 2/2] r8152: adjust rtl_start_rx Hayes Wang
2014-11-21 19:53 ` [PATCH net-next v3 0/2] r8152: adjust rx functions David Miller
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