From: Stephen Hemminger <shemminger@vyatta.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: Mike McCormack <mikem@ring3k.org>, netdev@vger.kernel.org
Subject: Re: [PATCH 2/2] sky2: Allocate initial skbs in sky2_alloc_buffers
Date: Fri, 5 Feb 2010 22:12:46 -0800 [thread overview]
Message-ID: <20100205221246.6fdb3632@s6510> (raw)
In-Reply-To: <20100205181045.42908795@nehalam>
On Fri, 5 Feb 2010 18:10:45 -0800
Stephen Hemminger <shemminger@vyatta.com> wrote:
> On Sat, 06 Feb 2010 10:22:59 +0900
> Mike McCormack <mikem@ring3k.org> wrote:
>
> > Allocating everything in one place means there's a single point
> > of failure in sky2_up, and sky2_rx_start can no longer fail.
>
> If ring is never allocated, how then it must fail in up.
> Plus if the initial ring allocation is partial it should fail.
Let me put that clearer...
When dev_open is called, the system might be very short of memory
and unable to allocate the number of receive buffers; in that case,
I would prefer that an error was returned to the application.
Yes, this is a corner case; but it is better to fail with a noisy
error than limp along with a dead device.
next prev parent reply other threads:[~2010-02-06 6:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-06 1:22 [PATCH 2/2] sky2: Allocate initial skbs in sky2_alloc_buffers Mike McCormack
2010-02-06 2:10 ` Stephen Hemminger
2010-02-06 6:12 ` Stephen Hemminger [this message]
2010-02-07 9:56 ` Mike McCormack
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