Re: size calculation wasted cpu time

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On Monday 2009-03-16 14:02, Kuzin Andrey wrote:

>In /net/netfilter/nfnetlink_queue.c every call of nfqnl_build_packet_message()
>make series of call nla_total_size() for 'size' calculations.
>I think 'size' is constant value for kernel build and may be define static
>variable for this ?
>
>        size =    NLMSG_SPACE(sizeof(struct nfgenmsg))
>                + nla_total_size(sizeof(struct nfqnl_msg_packet_hdr))
>                + nla_total_size(sizeof(u_int32_t))     /* ifindex */
>                + nla_total_size(sizeof(u_int32_t))     /* ifindex */

The compiler will optimize it out.
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