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Date: Fri, 13 Apr 2007 17:39:48 +0900 (JST) From: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@...ux-ipv6.org> To: davem@...emloft.net Cc: netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org, mitch@...ux.vnet.ibm.com Subject: [PATCH] [IPV6] SNMP: Fix {In,Out}NoRoutes statistics. A packet which is being discarded because of no routes in the forwarding path should not be counted as OutNoRoutes but as InNoRoutes. Additionally, on this occasion, a packet whose destinaion is not valid should be counted as InAddrErrors separately. Based on patch from Mitsuru Chinen <mitch@...ux.vnet.ibm.com>. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org> --- net/ipv6/route.c | 31 ++++++++++++++++++++----------- 1 files changed, 20 insertions(+), 11 deletions(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 3931b33..ad058a9 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1775,13 +1775,22 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg) * Drop the packet on the floor */ -static inline int ip6_pkt_drop(struct sk_buff *skb, int code) -{ - int type = ipv6_addr_type(&skb->nh.ipv6h->daddr); - if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED) - IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_INADDRERRORS); - - IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_OUTNOROUTES); +static inline int ip6_pkt_drop(struct sk_buff *skb, int code, + int ipstats_mib_noroutes) +{ + int type; + switch (ipstats_mib_noroutes) { + case IPSTATS_MIB_INNOROUTES: + type = ipv6_addr_type(&skb->nh.ipv6h->daddr); + if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED) { + IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_INADDRERRORS); + break; + } + /* FALLTHROUGH */ + case IPSTATS_MIB_OUTNOROUTES: + IP6_INC_STATS(ip6_dst_idev(skb->dst), ipstats_mib_noroutes); + break; + } icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0, skb->dev); kfree_skb(skb); return 0; @@ -1789,26 +1798,26 @@ static inline int ip6_pkt_drop(struct sk_buff *skb, int code) static int ip6_pkt_discard(struct sk_buff *skb) { - return ip6_pkt_drop(skb, ICMPV6_NOROUTE); + return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_INNOROUTES); } static int ip6_pkt_discard_out(struct sk_buff *skb) { skb->dev = skb->dst->dev; - return ip6_pkt_discard(skb); + return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_OUTNOROUTES); } #ifdef CONFIG_IPV6_MULTIPLE_TABLES static int ip6_pkt_prohibit(struct sk_buff *skb) { - return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED); + return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_INNOROUTES); } static int ip6_pkt_prohibit_out(struct sk_buff *skb) { skb->dev = skb->dst->dev; - return ip6_pkt_prohibit(skb); + return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES); } static int ip6_pkt_blk_hole(struct sk_buff *skb) -- 1.5.1 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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