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authorJesse Gross <jesse@nicira.com>2009-12-06 15:10:35 -0800
committerJesse Gross <jesse@nicira.com>2009-12-07 12:48:03 -0800
commitc3e3d2a1e72f2fec8580e7974f809846788bc8ff (patch)
tree4fbab5a054859213bb11cf4cb3ab357492054972 /acinclude.m4
parentdb12f2fc076e2d5bb5ae364e217ca2d84c8b0154 (diff)
gre: Add kernel GRE support.
This implements the kernel portion of GRE on Linux. It consists of a backported module that provides the GRE capabilities of 2.6.32 plus bug fixes to kernels 2.6.18+.
Diffstat (limited to 'acinclude.m4')
-rw-r--r--acinclude.m411
1 files changed, 11 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4
index e37a316d..e4fa5e62 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -111,6 +111,16 @@ AC_DEFUN([OVS_CHECK_VETH], [
fi
])
+AC_DEFUN([OVS_CHECK_GRE], [
+ AC_MSG_CHECKING([whether to build gre module])
+ if test "$sublevel" -ge 18; then
+ AC_MSG_RESULT([yes])
+ AC_SUBST([BUILD_GRE], 1)
+ else
+ AC_MSG_RESULT([no])
+ fi
+])
+
AC_DEFUN([OVS_CHECK_LOG2_H], [
AC_MSG_CHECKING([for $KSRC26/include/linux/log2.h])
if test -e $KSRC26/include/linux/log2.h; then
@@ -153,6 +163,7 @@ AC_DEFUN([OVS_CHECK_LINUX26_COMPAT], [
[OVS_DEFINE([HAVE_PROTO_DATA_VALID])])
OVS_CHECK_LOG2_H
OVS_CHECK_VETH
+ OVS_CHECK_GRE
if cmp -s datapath/linux-2.6/kcompat.h.new \
datapath/linux-2.6/kcompat.h >/dev/null 2>&1; then
rm datapath/linux-2.6/kcompat.h.new