netdev - [PATCH 5/6] [IPV4] SNMP: Support OutMcastPkts and OutBcastPkts

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Message-Id: <20070417201418.e6f1a379.mitch@linux.vnet.ibm.com>
Date:	Tue, 17 Apr 2007 20:14:18 +0900
From:	Mitsuru Chinen <mitch@...ux.vnet.ibm.com>
To:	netdev@...r.kernel.org
Cc:	Mitsuru Chinen <mitch@...ux.vnet.ibm.com>
Subject: [PATCH 5/6] [IPV4] SNMP: Support OutMcastPkts and OutBcastPkts

A transmitted IP multicast datagram should be counted as OutMcastPkts.
By the same token, a transmitted IP broadcast datagram should be
counted as OutBcastPkts.

Signed-off-by: Mitsuru Chinen <mitch@...ux.vnet.ibm.com>
---
 net/ipv4/ip_output.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 704bc44..4442185 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -160,9 +160,15 @@ EXPORT_SYMBOL_GPL(ip_build_and_send_pkt)
 static inline int ip_finish_output2(struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb->dst;
+	struct rtable *rt = (struct rtable *)dst;
 	struct net_device *dev = dst->dev;
 	int hh_len = LL_RESERVED_SPACE(dev);
 
+	if (rt->rt_type == RTN_MULTICAST)
+		IP_INC_STATS(IPSTATS_MIB_OUTMCASTPKTS);
+	else if (rt->rt_type == RTN_BROADCAST)
+		IP_INC_STATS(IPSTATS_MIB_OUTBCASTPKTS);
+
 	/* Be paranoid, rather than too clever. */
 	if (unlikely(skb_headroom(skb) < hh_len && dev->hard_header)) {
 		struct sk_buff *skb2;
-- 
1.4.3.4

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