[PATCH] vlan: Fix Linux VLAN accel compile test under GCC 4.4

[Jesper Dangaard Brouer <hawk () comx dk>]

VLAN acceleration support is broken, when using GCC compiler >= 4.4
(tested with gcc version 4.4.5 (Debian 4.4.5-4)), due to the configure
script.

GCC 4.4 does not indirectly include the type of u_int, which the
configure code choose to use for this test. Thus, the if_packet check
fails due to the error: 'u_int' undeclared, eventhough the header
file if_packet.h contains the correct structs.

Fix the AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI macro compile test,
by simply including <sys/types.h>.

A longer description is available on my blog here:
 http://netoptimizer.blogspot.com/2010/09/tcpdump-vs-vlan-tags.html

Also fix the wrong AC_CACHE_VAL.

Notice, that this patch only change aclocal.m4, you need to
run a tool like 'autoreconf -fi' to generate the configure
script again.

Signed-off-by: Jesper Dangaard Brouer <hawk () comx dk>
---

 aclocal.m4 |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/aclocal.m4 b/aclocal.m4
index 2cce559..20db44f 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -995,8 +995,9 @@ dnl code that would use that member, or we wouldn't compile in any case).
 dnl
 AC_DEFUN(AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI,
     [AC_MSG_CHECKING(if tpacket_auxdata struct has tp_vlan_tci member)
-    AC_CACHE_VAL(ac_cv_lbl_dl_hp_ppa_info_t_has_dl_module_id_1,
+    AC_CACHE_VAL(ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci,
        AC_TRY_COMPILE([
+#      include <sys/types.h>
 #      include <linux/if_packet.h>],
        [u_int i = sizeof(((struct tpacket_auxdata *)0)->tp_vlan_tci)],
        ac_cv_lbl_linux_tpacket_auxdata_tp_vlan_tci=yes,

-
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