net: ipv4: Standardize prefixes for message logging

Add #define pr_fmt(fmt) as appropriate.

Add "IPv4: ", "TCP: ", and "IPsec: " to appropriate files.
Standardize on "UDPLite: " for appropriate uses.
Some prefixes were previously "UDPLITE: " and "UDP-Lite: ".

Add KBUILD_MODNAME ": " to icmp and gre.
Remove embedded prefixes as appropriate.

Add missing "\n" to pr_info in gre.c.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 257dba6..fe9f604 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -50,6 +50,7 @@
  *					a single port at the same time.
  */
 
+#define pr_fmt(fmt) "TCP: " fmt
 
 #include <linux/bottom_half.h>
 #include <linux/types.h>
@@ -876,8 +877,7 @@
 	lopt = inet_csk(sk)->icsk_accept_queue.listen_opt;
 	if (!lopt->synflood_warned) {
 		lopt->synflood_warned = 1;
-		pr_info("%s: Possible SYN flooding on port %d. %s. "
-			" Check SNMP counters.\n",
+		pr_info("%s: Possible SYN flooding on port %d. %s.  Check SNMP counters.\n",
 			proto, ntohs(tcp_hdr(skb)->dest), msg);
 	}
 	return want_cookie;
@@ -1399,7 +1399,7 @@
 			 * to destinations, already remembered
 			 * to the moment of synflood.
 			 */
-			LIMIT_NETDEBUG(KERN_DEBUG "TCP: drop open request from %pI4/%u\n",
+			LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("drop open request from %pI4/%u\n"),
 				       &saddr, ntohs(tcp_hdr(skb)->source));
 			goto drop_and_release;
 		}