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net: Convert LIMIT_NETDEBUG to net_dbg_ratelimited

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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>
This commit is contained in:
Joe Perches 2014-11-11 10:59:17 -08:00 • committed by David S. Miller
parent 5b61c4db49
commit ba7a46f16d
23 changed files with 105 additions and 116 deletions
Download patch file Download diff file Expand all files Collapse all files

18
net/ipv4/tcp_timer.c
View file

@ -374,17 +374,19 @@ void tcp_retransmit_timer(struct sock *sk)
*/
struct inet_sock *inet = inet_sk(sk);
if (sk->sk_family == AF_INET) {
LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n"),
&inet->inet_daddr,
ntohs(inet->inet_dport), inet->inet_num,
tp->snd_una, tp->snd_nxt);
net_dbg_ratelimited("Peer %pI4:%u/%u unexpectedly shrunk window %u:%u (repaired)\n",
&inet->inet_daddr,
ntohs(inet->inet_dport),
inet->inet_num,
tp->snd_una, tp->snd_nxt);
}
#if IS_ENABLED(CONFIG_IPV6)
else if (sk->sk_family == AF_INET6) {
LIMIT_NETDEBUG(KERN_DEBUG pr_fmt("Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n"),
&sk->sk_v6_daddr,
ntohs(inet->inet_dport), inet->inet_num,
tp->snd_una, tp->snd_nxt);
net_dbg_ratelimited("Peer %pI6:%u/%u unexpectedly shrunk window %u:%u (repaired)\n",
&sk->sk_v6_daddr,
ntohs(inet->inet_dport),
inet->inet_num,
tp->snd_una, tp->snd_nxt);
}
#endif
if (tcp_time_stamp - tp->rcv_tstamp > TCP_RTO_MAX) {