genlmsg_unicast() API changed for network namespace in 2.6.32.
Following patch handles compatibility with older kernel.

Signed-off-by: Pravin Shelar <[email protected]>
---
 datapath/linux/compat/include/net/genetlink.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/datapath/linux/compat/include/net/genetlink.h 
b/datapath/linux/compat/include/net/genetlink.h
index c91408e..035394e 100644
--- a/datapath/linux/compat/include/net/genetlink.h
+++ b/datapath/linux/compat/include/net/genetlink.h
@@ -168,4 +168,12 @@ static inline struct net *genl_info_net(struct genl_info 
*info)
 }
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
+#define genlmsg_unicast(ignore_sk, skb, pid)   rpl_genlmsg_unicast(skb, pid)
+
+static inline int rpl_genlmsg_unicast(struct sk_buff *skb, u32 pid)
+{
+       return nlmsg_unicast(genl_sock, skb, pid);
+}
+#endif
 #endif /* genetlink.h */
-- 
1.7.1

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