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Date: Fri, 4 Jun 2004 08:36:52 -0400
From: Bart Trojanowski <bart@jukie.net>
To: Sushant Sharma <sushant@cs.unm.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: modifying struct sk_buff
Message-ID: <20040604123652.GI29389@jukie.net>
References: <40BFCA4C.2000904@cs.unm.edu>
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* Sushant Sharma <sushant@cs.unm.edu> [040603 20:24]:
> Hi
> I want to add a new member (say uint32_t) in the
> struct sk_buff{...}
> in the file include/linux/skbuff.h.
<snip>
> Do I need to allocate memory for this member
> (  ie add sizeof(_new-member_) to *size* while doing kmalloc()  )

Hi Sushant,

I think you are confusing the allocation of 'data' with the allocation
of 'skb'.

If you add the uint32_t to struct sk_buff you don't have to modify
alloc_skb.  The skbuff_head_cache is informed what size the sk_buff
structure is in skb_init().

-Bart

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				WebSig: http://www.jukie.net/~bart/sig/

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