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Date:      Mon, 29 Jan 2018 10:29:10 -0700
From:      John Nielsen <lists@jnielsen.net>
To:        Ian Lepore <ian@FreeBSD.org>
Cc:        freebsd-current <freebsd-current@freebsd.org>, Warner Losh <imp@bsdimp.com>, Maurizio Vairani <maurizio1018@gmail.com>
Subject:   Re: Error compiling isboot-kmod
Message-ID:  <8C0D755C-5DD8-40BE-A0F8-180152A0BF84@jnielsen.net>
In-Reply-To: <1517070032.84051.6.camel@freebsd.org>
References:  <CAN0zgYUEUYDm%2BT3H-hOq%2BQ=N84m3CcNAVz=gXA8e0vxb38Ab4Q@mail.gmail.com> <CANCZdfodgQEFOZhajAvnoGmf%2BZtGq1oC3WAorKOP8EHSLVYiAg@mail.gmail.com> <CAN0zgYXutpiJz7pGUDhEKvB6bB=PvpwoGexctbwvhN7KMofZxQ@mail.gmail.com> <9D0C6C9E-3020-4EC0-97AF-6498FB7356C7@jnielsen.net> <1516988137.42536.255.camel@freebsd.org> <DB16E5CD-16F8-4A77-8CFA-84A0EF06764C@jnielsen.net> <09C92929-BC36-4C75-A2F2-0607C9701D40@jnielsen.net> <1517070032.84051.6.camel@freebsd.org>

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> On Jan 27, 2018, at 9:20 AM, Ian Lepore <ian@FreeBSD.org> wrote:
>=20
> On Fri, 2018-01-26 at 23:20 -0700, John Nielsen wrote:
>>>=20
>>> On Jan 26, 2018, at 9:42 PM, John Nielsen <lists@jnielsen.net> =
wrote:
>>>=20
>>>>=20
>>>> [...]
>>> --- iscsi.o ---
>>> iscsi.c:1146:3: error: incompatible pointer types passing 'void =
(struct mbuf *, void *, void *)' to parameter of type 'm_ext_free_t *' =
(aka 'void (*)(struct mbuf *)') [-Werror,-Wincompatible-pointer-types]
>>>                MEXTADD(md, (caddr_t)ds_dd, (ISCSI_ALIGN(pp->ds_len)
>>>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> /usr/src/sys/sys/mbuf.h:887:42: note: expanded from macro 'MEXTADD'
>>>    m_extadd((m), (char *)(buf), (size), (free), (arg1), (arg2),      =
  \
>>>                                         ^~~~~~
>>> /usr/src/sys/sys/mbuf.h:634:59: note: passing argument to parameter =
here
>>> void             m_extadd(struct mbuf *, char *, u_int, =
m_ext_free_t,
>> Looks like iscsi.c needs to be fixed up following r324446
>> (https://svnweb.freebsd.org/changeset/base/324446). Starting to be
>> out of my depth unless there's a mechanical way to make the changes?
>=20
> I'm not set up to test-compile this against -current right now, so I'm
> not sure if this is all that remains or just another breadcrumb on the
> trail, but... try the attached patch.
>=20
> -- Ian
> --- iscsi.c.orig	2018-01-27 08:43:26.937858000 -0700
> +++ iscsi.c	2018-01-27 09:15:39.631501000 -0700
> @@ -1071,17 +1071,23 @@
> }
>=20
>=20
> -#if __FreeBSD_version >=3D 1100000
> +#if __FreeBSD_version >=3D 1200051
> +static void
> +isboot_free_mbufext(struct mbuf *m)
> +{
> +	void *p =3D m->m_ext.ext_arg1;
> +#elif __FreeBSD_version >=3D 1100000
> static void
> isboot_free_mbufext(struct mbuf *m, void *p, void *optarg)
> #elif __FreeBSD_version >=3D 1000050 && __FreeBSD_version < 1100000
> static int
> isboot_free_mbufext(struct mbuf *m, void *p, void *optarg)
> +{
> #else
> static void
> isboot_free_mbufext(void *p, void *optarg)
> -#endif
> {
> +#endif

Thanks Ian. I think I ran in to a copy/paste issue on my end with the =
above but I can compile with this similar patch. Is it functionally =
equivalent to yours?

--- iscsi.c.orig	2015-11-05 09:50:51.000000000 -0700
+++ iscsi.c	2018-01-29 10:20:00.586277000 -0700
@@ -1070,9 +1070,11 @@
 	return (n);
 }
=20
-
-#if __FreeBSD_version >=3D 1100000
+#if __FreeBSD_version >=3D 1200051
 static void
+isboot_free_mbufext(struct mbuf *m)
+#elif __FreeBSD_version >=3D 1100000
+static void
 isboot_free_mbufext(struct mbuf *m, void *p, void *optarg)
 #elif __FreeBSD_version >=3D 1000050 && __FreeBSD_version < 1100000
 static int
@@ -1082,7 +1084,9 @@
 isboot_free_mbufext(void *p, void *optarg)
 #endif
 {
-
+#if __FreeBSD_version >=3D 1200051
+	void *p =3D m->m_ext.ext_arg1;
+#endif
 	ISBOOT_TRACE("isboot_free_mbufext\n");
 	if (p =3D=3D NULL)
 #if __FreeBSD_version >=3D 1000050 && __FreeBSD_version < 1100000




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