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From: David Miller <davem@davemloft.net>
To: nakam@linux-ipv6.org
Cc: yoshfuji@linux-ipv6.org, anttit@tcs.hut.fi, vnuorval@tcs.hut.fi,
	netdev@vger.kernel.org, usagi-core@linux-ipv6.org
Subject: Re: [PATCH 7/23] [PATCH] [XFRM] STATE: Add a hook to find where to be inserted header in outbound.
Date: Tue, 01 Aug 2006 17:09:16 -0700 (PDT)	[thread overview]
Message-ID: <20060801.170916.21925105.davem@davemloft.net> (raw)
In-Reply-To: <11541654231584-git-send-email-nakam@linux-ipv6.org>

From: Masahide NAKAMURA <nakam@linux-ipv6.org>
Date: Sat, 29 Jul 2006 18:30:23 +0900

> @@ -270,6 +270,7 @@ struct xfrm_type
>  	void			(*destructor)(struct xfrm_state *);
>  	int			(*input)(struct xfrm_state *, struct sk_buff *skb);
>  	int			(*output)(struct xfrm_state *, struct sk_buff *pskb);
> +	int			(*place_find)(struct xfrm_state *, struct sk_buff *, u8 **);
>  	/* Estimate maximal size of result of transformation of a dgram */
>  	u32			(*get_max_size)(struct xfrm_state *, int size);
>  };

I see a dangerous pattern of adding many, many, many methods
to the xfrm_type structure which are only used by ipv6.
But I cannot suggest another method.

There are frequent calls of the form:

	if (x->type->op != NULL)
		x->type->op(x, y, z);
	else
		foo(y, z);

it might be nicer to hide all of this behind carefully crafted
inline functions.

  parent reply	other threads:[~2006-08-02  0:09 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-29  9:30 [PATCH 7/23] [PATCH] [XFRM] STATE: Add a hook to find where to be inserted header in outbound Masahide NAKAMURA
2006-07-30 23:31 ` James Morris
2006-08-02  0:09 ` David Miller [this message]
2006-08-02  2:20   ` Masahide NAKAMURA
2006-08-02  4:11     ` David Miller
2006-08-02  8:31       ` Masahide NAKAMURA

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