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| author | Ville Nuorvala <vnuorval@tcs.hut.fi> | 2006-11-24 17:08:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:30:27 -0800 |
| commit | 107a5fe6191249878de0de42bb64d3c35be1a986 (patch) | |
| tree | baecf23708782511699974240f20e793ca688556 /net/ipv6/ip6_tunnel.c | |
| parent | 6fb32ddeb2502292bb89e17f58600ce265598ed7 (diff) | |
| download | lwn-107a5fe6191249878de0de42bb64d3c35be1a986.tar.gz lwn-107a5fe6191249878de0de42bb64d3c35be1a986.zip | |
[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.c | 13 |
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: |