From ce13a1d5f605b4b87ae093f37d042df05760acca Mon Sep 17 00:00:00 2001
From: Steve Wise <swise@opengridcomputing.com>
Date: Mon, 17 Nov 2014 10:39:23 -0600
Subject: [PATCH] Add check for __vlan_find_dev_deep_rcu

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
---
 config/rdma.m4 | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/config/rdma.m4 b/config/rdma.m4
index 2b4fdd7..bc807c8 100644
--- a/config/rdma.m4
+++ b/config/rdma.m4
@@ -671,6 +671,22 @@ AC_DEFUN([LINUX_CONFIG_COMPAT],
 	],[
 		AC_MSG_RESULT(no)
 	])
+
+	AC_MSG_CHECKING([if if_vlan.h has __vlan_find_dev_deep_rcu])
+	LB_LINUX_TRY_COMPILE([
+		#include <linux/if_vlan.h>
+	],[
+		__vlan_find_dev_deep_rcu(NULL, 0, 0);
+
+		return 0;
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE___VLAN_FIND_DEV_DEEP_RCU, 1,
+			  [__vlan_find_dev_deep_rcu is defined])
+	],[
+		AC_MSG_RESULT(no)
+	])
+
 ])
 #
 # COMPAT_CONFIG_HEADERS
-- 
2.41.0