netdev - Re: [PATCH rfc 5/5] r8169: provide some firmware information via ethtool.

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Date:	Thu, 28 Apr 2011 15:34:02 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Ciprian Docan <docan@...n.rutgers.edu>,
	Fejes József <fejes@...o.name>,
	Realtek linux nic maintainers <nic_swsd@...ltek.com>,
	Ben Hutchings <ben@...adent.org.uk>
Subject: Re: [PATCH rfc 5/5] r8169: provide some firmware information via
 ethtool.

On Wed, Apr 27, 2011 at 04:37:30PM -0400, Francois Romieu wrote:
> There is no real firmware version yet but the manpage of ethtool
> is rather terse about the driver information.
> 
> Signed-off-by: Francois Romieu <romieu@...zoreil.com>
> Cc: Ciprian Docan <docan@...n.rutgers.edu>
> Cc: Fejes József <fejes@...o.name>
> Cc: Borislav Petkov <borislav.petkov@....com>
> Cc: Realtek linux nic maintainers <nic_swsd@...ltek.com>
> ---
>  drivers/net/r8169.c |   45 +++++++++++++++++++++++++--------------------
>  1 files changed, 25 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
> index 2606a20..76e81ac 100644
> --- a/drivers/net/r8169.c
> +++ b/drivers/net/r8169.c
> @@ -1190,6 +1190,19 @@ static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
>  	return 0;
>  }
>  
> +static const char *rtl_lookup_firmware_name(struct rtl8169_private *tp)
> +{
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(rtl_firmware_infos); i++) {
> +		const struct rtl_firmware_info *info = rtl_firmware_infos + i;
> +
> +		if (info->mac_version == tp->mac_version)
> +			return info->fw_name;
> +	}
> +	return NULL;
> +}
> +
>  static void rtl8169_get_drvinfo(struct net_device *dev,
>  				struct ethtool_drvinfo *info)
>  {
> @@ -1198,6 +1211,8 @@ static void rtl8169_get_drvinfo(struct net_device *dev,
>  	strcpy(info->driver, MODULENAME);
>  	strcpy(info->version, RTL8169_VERSION);
>  	strcpy(info->bus_info, pci_name(tp->pci_dev));
> +	strncpy(info->fw_version, IS_ERR_OR_NULL(tp->fw) ? "N/A" :
> +		rtl_lookup_firmware_name(tp), sizeof(info->fw_version));
>  }
>  
>  static int rtl8169_get_regs_len(struct net_device *dev)
> @@ -3502,33 +3517,23 @@ static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
>  
>  static void rtl_request_firmware(struct rtl8169_private *tp)
>  {
> -	int i;
> -
>  	/* Return early if the firmware is already loaded / cached. */
> -	if (!IS_ERR(tp->fw))
> -		goto out;
> -
> -	for (i = 0; i < ARRAY_SIZE(rtl_firmware_infos); i++) {
> -		const struct rtl_firmware_info *info = rtl_firmware_infos + i;
> +	if (IS_ERR(tp->fw)) {
> +		const char *name;
>  
> -		if (info->mac_version == tp->mac_version) {
> -			const char *name = info->fw_name;
> +		name = rtl_lookup_firmware_name(tp);
> +		if (name) {

Yep, looks good. Just a minor nitpick:

you could save yourself an indentation level by doing

		if (!name)
			continue;

so that the netif_warn() string below could stay unbroken for easier
grepping.

>  			int rc;
>  
>  			rc = request_firmware(&tp->fw, name, &tp->pci_dev->dev);
> -			if (rc < 0) {
> -				netif_warn(tp, ifup, tp->dev, "unable to load "
> -					"firmware patch %s (%d)\n", name, rc);
> -				goto out_disable_request_firmware;
> -			}
> -			goto out;
> +			if (rc >= 0)
> +				return;
> +
> +			netif_warn(tp, ifup, tp->dev, "unable to load "
> +				"firmware patch %s (%d)\n", name, rc);
>  		}
> +		tp->fw = NULL;
>  	}
> -
> -out_disable_request_firmware:
> -	tp->fw = NULL;
> -out:
> -	return;
>  }
>  
>  static int rtl8169_open(struct net_device *dev)
> -- 
> 1.7.4.4
> 

Thanks.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
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