net: Convert printks to pr_<level>

Use a more current kernel messaging style.

Convert a printk block to print_hex_dump.
Coalesce formats, align arguments.
Use %s, __func__ instead of embedding function names.

Some messages that were prefixed with <foo>_close are
now prefixed with <foo>_fini.  Some ah4 and esp messages
are now not prefixed with "ip ".

The intent of this patch is to later add something like
  #define pr_fmt(fmt) "IPv4: " fmt.
to standardize the output messages.

Text size is trivially reduced. (x86-32 allyesconfig)

$ size net/ipv4/built-in.o*
   text	   data	    bss	    dec	    hex	filename
 887888	  31558	 249696	1169142	 11d6f6	net/ipv4/built-in.o.new
 887934	  31558	 249800	1169292	 11d78c	net/ipv4/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 6ef66af12291..185e0a75ecec 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1716,7 +1716,7 @@ static int __init ipgre_init(void)
 {
         int err;
 
-        printk(KERN_INFO "GRE over IPv4 tunneling driver\n");
+        pr_info("GRE over IPv4 tunneling driver\n");
 
         err = register_pernet_device(&ipgre_net_ops);
         if (err < 0)
@@ -1724,7 +1724,7 @@ static int __init ipgre_init(void)
 
         err = gre_add_protocol(&ipgre_protocol, GREPROTO_CISCO);
         if (err < 0) {
-                printk(KERN_INFO "ipgre init: can't add protocol\n");
+                pr_info("%s: can't add protocol\n", __func__);
                 goto add_proto_failed;
         }
 
@@ -1753,7 +1753,7 @@ static void __exit ipgre_fini(void)
         rtnl_link_unregister(&ipgre_tap_ops);
         rtnl_link_unregister(&ipgre_link_ops);
         if (gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO) < 0)
-                printk(KERN_INFO "ipgre close: can't remove protocol\n");
+                pr_info("%s: can't remove protocol\n", __func__);
         unregister_pernet_device(&ipgre_net_ops);
 }