IPVS: Add struct ip_vs_pe

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Julian Anastasov <ja@ssi.bg>

diff --git a/include/linux/ip_vs.h b/include/linux/ip_vs.h
index df77286..0a9c44d 100644
--- a/include/linux/ip_vs.h
+++ b/include/linux/ip_vs.h
@@ -99,8 +99,10 @@
 				0)
 
 #define IP_VS_SCHEDNAME_MAXLEN	16
+#define IP_VS_PENAME_MAXLEN	16
 #define IP_VS_IFNAME_MAXLEN	16
 
+#define IP_VS_PEDATA_MAXLEN     255
 
 /*
  *	The struct ip_vs_service_user and struct ip_vs_dest_user are