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authorVille Nuorvala <vnuorval@tcs.hut.fi>2006-11-24 17:08:58 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-02 21:30:27 -0800
commit107a5fe6191249878de0de42bb64d3c35be1a986 (patch)
treebaecf23708782511699974240f20e793ca688556 /net/ipv6/ip6_tunnel.c
parent6fb32ddeb2502292bb89e17f58600ce265598ed7 (diff)
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[IPV6]: Improve IPv6 tunnel error reporting
Log an error if the remote tunnel endpoint is unable to handle tunneled packets. Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_tunnel.c')
-rw-r--r--net/ipv6/ip6_tunnel.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index daad1e5a2a85..8d918348f5bb 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -424,12 +424,9 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
}
break;
case ICMPV6_PARAMPROB:
- /* ignore if parameter problem not caused by a tunnel
- encapsulation limit sub-option */
- if (code != ICMPV6_HDR_FIELD) {
- break;
- }
- teli = parse_tlv_tnl_enc_lim(skb, skb->data);
+ teli = 0;
+ if (code == ICMPV6_HDR_FIELD)
+ teli = parse_tlv_tnl_enc_lim(skb, skb->data);
if (teli && teli == ntohl(info) - 2) {
tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli];
@@ -441,6 +438,10 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
"tunnel!\n", t->parms.name);
rel_msg = 1;
}
+ } else if (net_ratelimit()) {
+ printk(KERN_WARNING
+ "%s: Recipient unable to parse tunneled "
+ "packet!\n ", t->parms.name);
}
break;
case ICMPV6_PKT_TOOBIG: