[ovs-dev] [PATCH] datapath: Fix compiling error for latest Linux 4.14 kernel

Yifeng Sun pkusunyifeng at gmail.com
Fri Apr 26 18:07:43 UTC 2019


CC: Greg Rose <gvrose8192 at gmail.com>
Fixes: f72469405eec9 ("datapath: meter: Use struct_size() in kzalloc()")
Signed-off-by: Yifeng Sun <pkusunyifeng at gmail.com>
---
 acinclude.m4                                   | 2 ++
 datapath/linux/compat/include/linux/overflow.h | 2 +-
 datapath/meter.c                               | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 1607d5f4b1d9..548cbe9ef100 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -920,6 +920,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
                         [OVS_DEFINE([HAVE_INET_FRAGS_RND])])
   OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [__LINUX_OVERFLOW_H],
                   [OVS_DEFINE([HAVE_OVERFLOW_H])])
+  OVS_GREP_IFELSE([$KSRC/include/linux/overflow.h], [struct_size],
+                  [OVS_DEFINE([HAVE_STRUCT_SIZE])])
   OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_array],
                   [OVS_DEFINE([HAVE_KVMALLOC_ARRAY])])
   OVS_GREP_IFELSE([$KSRC/include/linux/mm.h], [kvmalloc_node],
diff --git a/datapath/linux/compat/include/linux/overflow.h b/datapath/linux/compat/include/linux/overflow.h
index ff84356db16c..8f1b5b005491 100644
--- a/datapath/linux/compat/include/linux/overflow.h
+++ b/datapath/linux/compat/include/linux/overflow.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
-#ifdef HAVE_OVERFLOW_H
+#if defined(HAVE_OVERFLOW_H) && defined(HAVE_STRUCT_SIZE)
 #include_next <linux/overflow.h>
 #else
 #ifndef __LINUX_OVERFLOW_H
diff --git a/datapath/meter.c b/datapath/meter.c
index 51ec1495033a..eda14682fb96 100644
--- a/datapath/meter.c
+++ b/datapath/meter.c
@@ -13,6 +13,7 @@
 #include <linux/ip.h>
 #include <linux/kernel.h>
 #include <linux/openvswitch.h>
+#include <linux/overflow.h>
 #include <linux/netlink.h>
 #include <linux/rculist.h>
 
-- 
2.7.4



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