[IPV6]: SNMPv2 "ipv6IfStatsInHdrErrors" counter error
When I tested Linux kernel 2.6.17.7 about statistics "ipv6IfStatsInHdrErrors", found that this counter couldn't increase correctly. The criteria is RFC2465: ipv6IfStatsInHdrErrors OBJECT-TYPE SYNTAX Counter3 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of input datagrams discarded due to errors in their IPv6 headers, including version number mismatch, other format errors, hop count exceeded, errors discovered in processing their IPv6 options, etc." ::= { ipv6IfStatsEntry 2 } When I send TTL=0 and TTL=1 a packet to a router which need to be forwarded, router just sends an ICMPv6 message to tell the sender that TIME_EXCEED and HOPLIMITS, but no increments for this counter(in the function ip6_forward). Signed-off-by: Wei Dong <weid@nanjing-fnst.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -356,6 +356,7 @@ int ip6_forward(struct sk_buff *skb)
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skb->dev = dst->dev;
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icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
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0, skb->dev);
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IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
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kfree_skb(skb);
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return -ETIMEDOUT;
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