IPVS: use pr_err and friends instead of IP_VS_ERR and friends

Since pr_err and friends are used instead of printk there is no point
in keeping IP_VS_ERR and friends.  Furthermore make use of '__func__'
instead of hard coded function names.

Signed-off-by: Hannes Eder <heder@google.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 9108203..1c8ee1b 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -150,13 +150,10 @@
 #endif
 
 #define IP_VS_BUG() BUG()
-#define IP_VS_ERR(msg...) pr_err(msg)
-#define IP_VS_INFO(msg...) pr_info(msg)
-#define IP_VS_WARNING(msg...) pr_warning(msg)
-#define IP_VS_ERR_RL(msg...)						\
+#define IP_VS_ERR_RL(msg, ...)						\
 	do {								\
 		if (net_ratelimit())					\
-			pr_err(msg);					\
+			pr_err(msg, ##__VA_ARGS__);			\
 	} while (0)
 
 #ifdef CONFIG_IP_VS_DEBUG