netdev - Re: Printing the driver name as part of the netdev watchdog message

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Date:	Wed, 9 Jul 2008 19:28:50 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Joe Perches <joe@...ches.com>,
	Stephen Hemminger <stephen.hemminger@...tta.com>,
	David Miller <davem@...emloft.net>,
	swise@...ngridcomputing.com, rdreier@...co.com,
	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: Printing the driver name as part of the netdev watchdog message

Arjan van de Ven wrote:
> On Wed, 09 Jul 2008 10:20:55 -0700
> Joe Perches <joe@...ches.com> wrote:
> 
> > On Tue, 2008-07-08 at 20:16 -0700, Stephen Hemminger wrote:
> > > > +void netdev_drivername(struct net_device *dev, char *buffer, int
> > > > len)
> > > void netdev_drivername(const struct net_device *dev, char *buffer,
> > > int len) since net device not changed.
> > 
> > char *netdev_drivername(const struct net_dev *dev, char *buffer,
> > size_t len)
> > 
> > size_t len and returns *buffer
> > 
> > allows:
> > 
> > 	char drivername[64];
> >         printk(KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit timed
> > out\n", dev->name, netdev_drivername(dev, drivername,
> > sizeof(drivername));
> 
> I like the return a char * (updated patch below)
> I don't like the size_t... size_t is an abstraction to deal with file
> sizes.... but there's nothing else wrong with using an int for numbers.
[...]

size_t is for memory sizes - that's why sizeof() expressions have that
type.  File sizes are loff_t.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
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