net: ipv6: Standardize prefixes for message logging

Add #define pr_fmt(fmt) as appropriate.

Add "IPv6: " to appropriate files.

Convert printk(KERN_<LEVEL> to pr_<level> (but not KERN_DEBUG).
Standardize on "%s: " not "%s(): " when emitting __func__.
Use "%s: ", __func__ instead of embedding function name.
Coalesce formats, align arguments.

ADDRCONF output is now prefixed with "IPv6: "

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 9371743..e9846da 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -18,6 +18,9 @@
  * 				routing table.
  * 	Ville Nuorvala:		Fixed routing subtrees.
  */
+
+#define pr_fmt(fmt) "IPv6: " fmt
+
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/net.h>
@@ -451,12 +454,10 @@
 		    !ipv6_prefix_equal(&key->addr, addr, fn->fn_bit)) {
 			if (!allow_create) {
 				if (replace_required) {
-					pr_warn("IPv6: Can't replace route, "
-						"no match found\n");
+					pr_warn("Can't replace route, no match found\n");
 					return ERR_PTR(-ENOENT);
 				}
-				pr_warn("IPv6: NLM_F_CREATE should be set "
-					"when creating new route\n");
+				pr_warn("NLM_F_CREATE should be set when creating new route\n");
 			}
 			goto insert_above;
 		}
@@ -499,11 +500,10 @@
 		 * That would keep IPv6 consistent with IPv4
 		 */
 		if (replace_required) {
-			pr_warn("IPv6: Can't replace route, no match found\n");
+			pr_warn("Can't replace route, no match found\n");
 			return ERR_PTR(-ENOENT);
 		}
-		pr_warn("IPv6: NLM_F_CREATE should be set "
-			"when creating new route\n");
+		pr_warn("NLM_F_CREATE should be set when creating new route\n");
 	}
 	/*
 	 *	We walked to the bottom of tree.
@@ -696,7 +696,7 @@
 	 */
 	if (!replace) {
 		if (!add)
-			pr_warn("IPv6: NLM_F_CREATE should be set when creating new route\n");
+			pr_warn("NLM_F_CREATE should be set when creating new route\n");
 
 add:
 		rt->dst.rt6_next = iter;
@@ -715,7 +715,7 @@
 		if (!found) {
 			if (add)
 				goto add;
-			pr_warn("IPv6: NLM_F_REPLACE set, but no existing node found!\n");
+			pr_warn("NLM_F_REPLACE set, but no existing node found!\n");
 			return -ENOENT;
 		}
 		*ins = rt;
@@ -768,7 +768,7 @@
 			replace_required = 1;
 	}
 	if (!allow_create && !replace_required)
-		pr_warn("IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE\n");
+		pr_warn("RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE\n");
 
 	fn = fib6_add_1(root, &rt->rt6i_dst.addr, sizeof(struct in6_addr),
 			rt->rt6i_dst.plen, offsetof(struct rt6_info, rt6i_dst),