netdev - Re: [PATCHv3 net-next 05/12] ndisc: add __ndisc_opt_addr

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Date:	Wed, 15 Jun 2016 20:07:49 +0900
From:	YOSHIFUJI Hideaki <hideaki.yoshifuji@...aclelinux.com>
To:	Alexander Aring <aar@...gutronix.de>, linux-wpan@...r.kernel.org
Cc:	hideaki.yoshifuji@...aclelinux.com, kernel@...gutronix.de,
	marcel@...tmann.org, jukka.rissanen@...ux.intel.com,
	hannes@...essinduktion.org, stefan@....samsung.com,
	mcr@...delman.ca, werner@...esberger.net,
	linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
	"David S . Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCHv3 net-next 05/12] ndisc: add __ndisc_opt_addr_data
 function



Alexander Aring wrote:
> This patch adds __ndisc_opt_addr_data as low-level function for
> ndisc_opt_addr_data which doesn't depend on net_device parameter.
> 
> Cc: David S. Miller <davem@...emloft.net>
> Cc: Alexey Kuznetsov <kuznet@....inr.ac.ru>
> Cc: James Morris <jmorris@...ei.org>
> Cc: Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
> Cc: Patrick McHardy <kaber@...sh.net>
> Signed-off-by: Alexander Aring <aar@...gutronix.de>

Acked-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>

> ---
>  include/net/ndisc.h | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/include/net/ndisc.h b/include/net/ndisc.h
> index 4cee826..c8962ad 100644
> --- a/include/net/ndisc.h
> +++ b/include/net/ndisc.h
> @@ -138,17 +138,23 @@ static inline int ndisc_opt_addr_space(struct net_device *dev)
>  				      ndisc_addr_option_pad(dev->type));
>  }
>  
> -static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
> -				      struct net_device *dev)
> +static inline u8 *__ndisc_opt_addr_data(struct nd_opt_hdr *p,
> +					unsigned char addr_len, int prepad)
>  {
>  	u8 *lladdr = (u8 *)(p + 1);
>  	int lladdrlen = p->nd_opt_len << 3;
> -	int prepad = ndisc_addr_option_pad(dev->type);
> -	if (lladdrlen != ndisc_opt_addr_space(dev))
> +	if (lladdrlen != __ndisc_opt_addr_space(addr_len, prepad))
>  		return NULL;
>  	return lladdr + prepad;
>  }
>  
> +static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
> +				      struct net_device *dev)
> +{
> +	return __ndisc_opt_addr_data(p, dev->addr_len,
> +				     ndisc_addr_option_pad(dev->type));
> +}
> +
>  static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, __u32 *hash_rnd)
>  {
>  	const u32 *p32 = pkey;
> 

-- 
Hideaki Yoshifuji <hideaki.yoshifuji@...aclelinux.com>
Technical Division, MIRACLE LINUX CORPORATION