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/net/netfilter/ipvs/ip_vs_app.c b/net/netfilter/ipvs/ip_vs_app.c
index c1781f8..3c7e427 100644
--- a/net/netfilter/ipvs/ip_vs_app.c
+++ b/net/netfilter/ipvs/ip_vs_app.c
@@ -265,12 +265,12 @@
 	if (vseq->delta || vseq->previous_delta) {
 		if(after(seq, vseq->init_seq)) {
 			th->seq = htonl(seq + vseq->delta);
-			IP_VS_DBG(9, "vs_fix_seq(): added delta (%d) to seq\n",
-				  vseq->delta);
+			IP_VS_DBG(9, "%s(): added delta (%d) to seq\n",
+				  __func__, vseq->delta);
 		} else {
 			th->seq = htonl(seq + vseq->previous_delta);
-			IP_VS_DBG(9, "vs_fix_seq(): added previous_delta "
-				  "(%d) to seq\n", vseq->previous_delta);
+			IP_VS_DBG(9, "%s(): added previous_delta (%d) to seq\n",
+				  __func__, vseq->previous_delta);
 		}
 	}
 }
@@ -294,14 +294,14 @@
 		   to receive next, so compare it with init_seq+delta */
 		if(after(ack_seq, vseq->init_seq+vseq->delta)) {
 			th->ack_seq = htonl(ack_seq - vseq->delta);
-			IP_VS_DBG(9, "vs_fix_ack_seq(): subtracted delta "
-				  "(%d) from ack_seq\n", vseq->delta);
+			IP_VS_DBG(9, "%s(): subtracted delta "
+				  "(%d) from ack_seq\n", __func__, vseq->delta);
 
 		} else {
 			th->ack_seq = htonl(ack_seq - vseq->previous_delta);
-			IP_VS_DBG(9, "vs_fix_ack_seq(): subtracted "
+			IP_VS_DBG(9, "%s(): subtracted "
 				  "previous_delta (%d) from ack_seq\n",
-				  vseq->previous_delta);
+				  __func__, vseq->previous_delta);
 		}
 	}
 }