Re: netgraph only on i386/ia64 - why ?
From: John Polstra (jdp_at_polstra.com)
Date: 08/17/04
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Date: Tue, 17 Aug 2004 09:48:57 -0700 (PDT) To: Harti Brandt <harti@freebsd.org>
On 17-Aug-2004 Harti Brandt wrote:
> On Mon, 16 Aug 2004, Bjoern A. Zeeb wrote:
>
> BAZ>Hi,
> BAZ>
> BAZ>It seems netgraph is only build on ia64 and i386.
> BAZ>Can someone please explain why ?
>
> Until around april I used all the ATM related Ng stuff regularily (this
> include ng_socket, all the stuff under netgraph/atm). I think this should
> just be enabled. Unless build problems have been introduced since then,
> it should just be enabled.
There is one problem with netgraph on 64-bit platforms. The ng_msghdr
struct is 52 bytes / 4-byte aligned (see ng_message.h). That means
the message payload is not well-aligned for 64-bit platforms. It
would be nice to fix that (and bump NG_VERSION, of course). Nobody
ever guaranteed that the message payload would be aligned, but it
makes things a lot more convenient.
John
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