netdev - Re: [PATCH 11/14] net: dsa: Add support for reading switch registers with ethtool

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <54489059.8010606@roeck-us.net>
Date:	Wed, 22 Oct 2014 22:21:29 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Florian Fainelli <f.fainelli@...il.com>
CC:	netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Lunn <andrew@...n.ch>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 11/14] net: dsa: Add support for reading switch registers
 with ethtool

On 10/22/2014 09:40 PM, Florian Fainelli wrote:
> 2014-10-22 21:03 GMT-07:00 Guenter Roeck <linux@...ck-us.net>:
>> Add support for reading switch registers with 'ethtool -d'.
>>
>> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
>> ---
>
> [snip]
>
>>
>> +static int dsa_slave_get_regs_len(struct net_device *dev)
>> +{
>> +       struct dsa_slave_priv *p = netdev_priv(dev);
>> +       struct dsa_switch *ds = p->parent;
>> +
>> +       if (ds->drv->get_regs_len != NULL)
>> +               return ds->drv->get_regs_len(ds, p->port);
>
> Most of the checks in this file are just:
>
> if (ds->drv->callback)
>       return ds->drv->callback(...)
>
Hi Florian,

To be fair, that wasn't the case when I wrote the code ;-).
No problem, I'll do the same.

>> +
>> +       return -EOPNOTSUPP;
>> +}
>> +
>> +static void
>> +dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
>> +{
>> +       struct dsa_slave_priv *p = netdev_priv(dev);
>> +       struct dsa_switch *ds = p->parent;
>> +
>> +       ds->drv->get_regs(ds, p->port, regs, _p);
>
> We need to check that the driver does implement this callback here as well.
>

Obviously, and embarrassing ;-).

Thanks a lot for the review!
Guenter

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html