Date: Fri, 27 Jul 2001 08:30:23 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: Marco Molteni <molter@tin.it> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: how to share include files between kernel and userland? Message-ID: <20010727083023.A21548@Odin.AC.HMC.Edu> In-Reply-To: <20010727105549.A4331@cobweb.example.org>; from molter@tin.it on Fri, Jul 27, 2001 at 10:55:49AM %2B0200 References: <20010727105549.A4331@cobweb.example.org>
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[-- Attachment #1 --] On Fri, Jul 27, 2001 at 10:55:49AM +0200, Marco Molteni wrote: > I am writing a program to parse frames dumped to bpf by an, the > aironet driver. > > I am using the latest patches by Doug Ambrisko, that allow the driver > to dump not only the 802.11 frame but also the special Aironet header > that the device prepends to the 802.11 frame, ie: > > aironet header | 802.11 frame > > Now, to my question with include files. The struct that describes the > aironet header, an_rxframe, is in an/if_anreg.h, so I included > if_anreg.h in my program. Among other things, if_anreg.h needs the > definition of struct arpcom, which is in net/if_arp.h. Good, I > included also net/if_arp.h, but the compiler still complained. It > turns out that the definition of struct arpcom is guarded by > #ifdef _KERNEL. > > So, what should I do? Define _KERNEL in my program, or copy the > definition of struct an_rxframe directly in my C file? I hoped to find > a third, more elegant solution. First, apply the patches in PR 29210 if you haven't already (now that I think of it, they are probably in Doug's mega patch.) This removes all duplicate structures. Next, move an_rxframe to if_aironet_ieee.h so it's in the userland include file. The kernel now uses both of them so that should be the best answer. -- Brooks -- Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7YYkNXY6L6fI4GtQRArEMAJ4xoJq6tQcCi9d+x0aVBojhukAlBQCghTQq omC1WoxJ9LhNMH+v5Es1nuU= =dou0 -----END PGP SIGNATURE-----help
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