linux-kernel - Re: [PATCH] net: move "IPv6: sending pkt_too

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Date:	Sat, 28 Jul 2012 10:29:20 -0700
From:	Joe Perches <joe@...ches.com>
To:	Philipp Kern <pkern@...ian.org>
Cc:	linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	ak@...ux.intel.com
Subject: Re: [PATCH] net: move "IPv6: sending pkt_too_big to self" to
 NETDEBUG

On Sat, 2012-07-28 at 17:06 +0200, Philipp Kern wrote:
> ip6_xmit checks if the outgoing packet is larger than the path MTU and
> emits ICMPv6 packet too big locally if this is the case. Logging this,
> even at KERN_DEBUG, confuses users. It is also not actually helpful for
> debugging, given that there is no reference to the connection that
> triggered this event.
[]
> diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
[]
> @@ -241,7 +241,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
>  			       dst->dev, dst_output);
>  	}
>  
> -	net_dbg_ratelimited("IPv6: sending pkt_too_big to self\n");
> +	LIMIT_NETDEBUG("IPv6: sending pkt_too_big to self\n");

LIMIT_NETDEBUG doesn't include a logging level.
Add a KERN_DEBUG prefix or another KERN_<LEVEL>.

Maybe it'd be better to add the context too.


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