[ovs-dev] [PATCH] datapath: Check for supported kernel versions.

Jesse Gross jesse at nicira.com
Mon Jun 13 18:39:05 UTC 2011


Most of the time kernels older or newer than the ones we support
simply fail to compile.  However, sometimes they appear to succeed
but then cause problems later on.  This explicitly checks for
supported versions at compile time.

Signed-off-by: Jesse Gross <jesse at nicira.com>
---
 datapath/datapath.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/datapath/datapath.c b/datapath/datapath.c
index e2846f2..534ab91 100644
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -53,6 +53,11 @@
 #include "vlan.h"
 #include "vport-internal_dev.h"
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) || \
+    LINUX_VERSION_CODE > KERNEL_VERSION(2,6,39)
+#error Kernels before 2.6.18 or after 2.6.39 are not supported by this version of Open vSwitch.
+#endif
+
 int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
 EXPORT_SYMBOL(dp_ioctl_hook);
 
-- 
1.7.4.1




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