ip6_gre: Reduce log level in ip6gre_err() to debug

commit a46496ce38eeb401344d5623c1960dbf2f1769be upstream.

Currently error log messages in ip6gre_err are printed at 'warn'
level. This is different to most other tunnel types which don't
print any messages. These log messages don't provide any information
that couldn't be deduced with networking tools. Also it can be annoying
to have one end of the tunnel go down and have the logs fill with
pointless messages such as "Path to destination invalid or inactive!".

This patch reduces the log level of these messages to 'dbg' level to
bring the visible behaviour into line with other tunnel types.

Signed-off-by: Matt Bennett <matt.bennett@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index cfa7d1664fd983adc7d6b8eee7e76abe90b06516..d6976ad6e95b798ec66d15fdb6ddaef99e3a1963 100644 (file)
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -404,13 +404,13 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                struct ipv6_tlv_tnl_enc_lim *tel;
                __u32 mtu;
        case ICMPV6_DEST_UNREACH:
-               net_warn_ratelimited("%s: Path to destination invalid or inactive!\n",
-                                    t->parms.name);
+               net_dbg_ratelimited("%s: Path to destination invalid or inactive!\n",
+                                   t->parms.name);
                break;
        case ICMPV6_TIME_EXCEED:
                if (code == ICMPV6_EXC_HOPLIMIT) {
-                       net_warn_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
-                                            t->parms.name);
+                       net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
+                                           t->parms.name);
                }
                break;
        case ICMPV6_PARAMPROB:
@@ -421,12 +421,12 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                if (teli && teli == be32_to_cpu(info) - 2) {
                        tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli];
                        if (tel->encap_limit == 0) {
-                               net_warn_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",
-                                                    t->parms.name);
+                               net_dbg_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",
+                                                   t->parms.name);
                        }
                } else {
-                       net_warn_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
-                                            t->parms.name);
+                       net_dbg_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
+                                           t->parms.name);
                }
                break;
        case ICMPV6_PKT_TOOBIG: