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From: Richard Cochran <richardcochran@gmail.com>
To: Kurt Kanzenbach <kurt@linutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Jiri Pirko <jiri@mellanox.com>,
	Ido Schimmel <idosch@mellanox.com>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	Grygorii Strashko <grygorii.strashko@ti.com>,
	Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>,
	Samuel Zou <zou_wei@huawei.com>,
	netdev@vger.kernel.org, Petr Machata <petrm@mellanox.com>
Subject: Re: [PATCH v3 2/9] ptp: Add generic ptp message type function
Date: Sun, 2 Aug 2020 08:18:09 -0700
Message-ID: <20200802151809.GB14759@hoboy> (raw)
In-Reply-To: <20200730080048.32553-3-kurt@linutronix.de>

On Thu, Jul 30, 2020 at 10:00:41AM +0200, Kurt Kanzenbach wrote:
> The message type is located at different offsets within the ptp header depending
> on the ptp version (v1 or v2). Therefore, drivers which also deal with ptp v1
> have some code for it.
> 
> Extract this into a helper function for drivers to be used.
> 
> Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>

Reviewed-by: Richard Cochran <richardcochran@gmail.com>

CodingStyle nit below...

> ---
>  include/linux/ptp_classify.h | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
> index 26fd38a4bd67..f4dd42fddc0c 100644
> --- a/include/linux/ptp_classify.h
> +++ b/include/linux/ptp_classify.h
> @@ -90,6 +90,30 @@ unsigned int ptp_classify_raw(const struct sk_buff *skb);
>   */
>  struct ptp_header *ptp_parse_header(struct sk_buff *skb, unsigned int type);
>  
> +/**
> + * ptp_get_msgtype - Extract ptp message type from given header
> + * @hdr: ptp header
> + * @type: type of the packet (see ptp_classify_raw())
> + *
> + * This function returns the message type for a given ptp header. It takes care
> + * of the different ptp header versions (v1 or v2).
> + *
> + * Return: The message type
> + */
> +static inline u8 ptp_get_msgtype(const struct ptp_header *hdr,
> +				 unsigned int type)
> +{
> +	u8 msgtype;
> +
> +	if (unlikely(type & PTP_CLASS_V1))
> +		/* msg type is located at the control field for ptp v1 */
> +		msgtype = hdr->control;

With the comment, it looks like two statements, and so please use 

	if (...) {
		/**/
		...
	} else {
		...
	}

here.

> +	else
> +		msgtype = hdr->tsmt & 0x0f;
> +
> +	return msgtype;
> +}
> +
>  void __init ptp_classifier_init(void);
>  #else
>  static inline void ptp_classifier_init(void)
> -- 
> 2.20.1
> 

  reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-30  8:00 [PATCH v3 0/9] ptp: Add generic helper functions Kurt Kanzenbach
2020-07-30  8:00 ` [PATCH v3 1/9] ptp: Add generic ptp v2 header parsing function Kurt Kanzenbach
2020-07-30 10:15   ` Petr Machata
2020-07-31 10:06     ` Kurt Kanzenbach
2020-08-04 20:56       ` Grygorii Strashko
2020-08-04 21:07         ` Russell King - ARM Linux admin
2020-08-04 21:34           ` Grygorii Strashko
2020-08-04 21:44             ` Russell King - ARM Linux admin
2020-08-04 22:04               ` Grygorii Strashko
2020-08-04 23:14                 ` Russell King - ARM Linux admin
2020-08-05  9:29                   ` Kurt Kanzenbach
2020-08-05 12:59                     ` Grygorii Strashko
2020-08-05 13:57                       ` Kurt Kanzenbach
2020-08-05 19:15                         ` Grygorii Strashko
2020-08-06  7:56                           ` Kurt Kanzenbach
2020-08-05 15:25         ` Richard Cochran
2020-08-02 15:13   ` Richard Cochran
2020-08-02 20:20   ` Florian Fainelli
2020-07-30  8:00 ` [PATCH v3 2/9] ptp: Add generic ptp message type function Kurt Kanzenbach
2020-08-02 15:18   ` Richard Cochran [this message]
2020-08-02 20:20   ` Florian Fainelli
2020-07-30  8:00 ` [PATCH v3 3/9] net: dsa: mv88e6xxx: Use generic helper function Kurt Kanzenbach
2020-08-02 15:18   ` Richard Cochran
2020-08-02 20:21   ` Florian Fainelli
2020-07-30  8:00 ` [PATCH v3 4/9] mlxsw: spectrum_ptp: " Kurt Kanzenbach
2020-07-30 10:20   ` Petr Machata
2020-08-02 20:21   ` Florian Fainelli
2020-07-30  8:00 ` [PATCH v3 5/9] ethernet: ti: am65-cpts: " Kurt Kanzenbach
2020-07-30  9:19   ` Grygorii Strashko
2020-07-30  9:36     ` Kurt Kanzenbach
2020-07-30 10:24       ` Arnd Bergmann
2020-07-31 11:48         ` Kurt Kanzenbach
2020-07-31 12:55           ` Grygorii Strashko
2020-07-31 13:10             ` Kurt Kanzenbach
2020-07-30  8:00 ` [PATCH v3 6/9] ethernet: ti: cpts: " Kurt Kanzenbach
2020-08-02 20:22   ` Florian Fainelli
2020-08-05 18:52     ` Grygorii Strashko
2020-07-30  8:00 ` [PATCH v3 7/9] net: phy: dp83640: " Kurt Kanzenbach
2020-08-02 20:23   ` Florian Fainelli
2020-08-02 22:54   ` Richard Cochran
2020-07-30  8:00 ` [PATCH v3 8/9] ptp: ptp_ines: " Kurt Kanzenbach
2020-08-02 20:23   ` Florian Fainelli
2020-07-30  8:00 ` [PATCH v3 9/9] ptp: Remove unused macro Kurt Kanzenbach
2020-08-02 20:24   ` Florian Fainelli

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