linux-kernel - [PATCH 3.2 59/77] snmp: Remove duplicate OUTMCAST stat increment

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Message-ID: <lsq.1450971462.137501729@decadent.org.uk>
Date:	Thu, 24 Dec 2015 15:37:42 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Claus Jensen" <claus.jensen@...rosemi.com>,
	"David Miller" <davem@...emloft.net>,
	"Neil Horman" <nhorman@...driver.com>
Subject: [PATCH 3.2 59/77] snmp: Remove duplicate OUTMCAST stat increment

3.2.75-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Neil Horman <nhorman@...driver.com>

[ Upstream commit 41033f029e393a64e81966cbe34d66c6cf8a2e7e ]

the OUTMCAST stat is double incremented, getting bumped once in the mcast code
itself, and again in the common ip output path.  Remove the mcast bump, as its
not needed

Validated by the reporter, with good results

Signed-off-by: Neil Horman <nhorman@...driver.com>
Reported-by: Claus Jensen <claus.jensen@...rosemi.com>
CC: Claus Jensen <claus.jensen@...rosemi.com>
CC: David Miller <davem@...emloft.net>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 net/ipv6/mcast.c | 2 --
 1 file changed, 2 deletions(-)

--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1441,7 +1441,6 @@ out:
 	if (!err) {
 		ICMP6MSGOUT_INC_STATS(net, idev, ICMPV6_MLD2_REPORT);
 		ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
-		IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, payload_len);
 	} else {
 		IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
 	}
@@ -1811,7 +1810,6 @@ out:
 	if (!err) {
 		ICMP6MSGOUT_INC_STATS(net, idev, type);
 		ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
-		IP6_UPD_PO_STATS(net, idev, IPSTATS_MIB_OUTMCAST, full_len);
 	} else
 		IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
 

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