net: Convert LIMIT_NETDEBUG to net_dbg_ratelimited

Use the more common dynamic_debug capable net_dbg_ratelimited
and remove the LIMIT_NETDEBUG macro.

All messages are still ratelimited.

Some KERN_<LEVEL> uses are changed to KERN_DEBUG.

This may have some negative impact on messages that were
emitted at KERN_INFO that are not not enabled at all unless
DEBUG is defined or dynamic_debug is enabled.  Even so,
these messages are now _not_ emitted by default.

This also eliminates the use of the net_msg_warn sysctl
"/proc/sys/net/core/warnings".  For backward compatibility,
the sysctl is not removed, but it has no function.  The extern
declaration of net_msg_warn is removed from sock.h and made
static in net/core/sysctl_net_core.c

Miscellanea:

o Update the sysctl documentation
o Remove the embedded uses of pr_fmt
o Coalesce format fragments
o Realign arguments

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

1 files changed, 0 insertions, 7 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 7789b59c0c40..83a669f83bae 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2288,13 +2288,6 @@ bool sk_ns_capable(const struct sock *sk,
 bool sk_capable(const struct sock *sk, int cap);
 bool sk_net_capable(const struct sock *sk, int cap);
 
-/*
- *	Enable debug/info messages
- */
-extern int net_msg_warn;
-#define LIMIT_NETDEBUG(fmt, args...) \
-	do { if (net_msg_warn && net_ratelimit()) printk(fmt,##args); } while(0)
-
 extern __u32 sysctl_wmem_max;
 extern __u32 sysctl_rmem_max;