Patch "bonding: fix accounting of active ports in 3ad" has been added to the 4.9-stable tree

Patch "bonding: fix accounting of active ports in 3ad" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    bonding: fix accounting of active ports in 3ad

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     bonding-fix-accounting-of-active-ports-in-3ad.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Wed May 31 09:13:34 JST 2017
From: Jarod Wilson <jarod@redhat.com>
Date: Fri, 19 May 2017 19:43:45 -0400
Subject: bonding: fix accounting of active ports in 3ad

From: Jarod Wilson <jarod@redhat.com>


[ Upstream commit 751da2a69b7cc82d83dc310ed7606225f2d6e014 ]

As of 7bb11dc9f59d and 0622cab0341c, bond slaves in a 3ad bond are not
removed from the aggregator when they are down, and the active slave count
is NOT equal to number of ports in the aggregator, but rather the number
of ports in the aggregator that are still enabled. The sysfs spew for
bonding_show_ad_num_ports() has a comment that says "Show number of active
802.3ad ports.", but it's currently showing total number of ports, both
active and inactive. Remedy it by using the same logic introduced in
0622cab0341c in __bond_3ad_get_active_agg_info(), so sysfs, procfs and
netlink all report the number of active ports. Note that this means that
IFLA_BOND_AD_INFO_NUM_PORTS really means NUM_ACTIVE_PORTS instead of
NUM_PORTS, and thus perhaps should be renamed for clarity.

Lightly tested on a dual i40e lacp bond, simulating link downs with an ip
link set dev <slave2> down, was able to produce the state where I could
see both in the same aggregator, but a number of ports count of 1.

MII Status: up
Active Aggregator Info:
        Aggregator ID: 1
        Number of ports: 2 <---
Slave Interface: ens10
MII Status: up <---
Aggregator ID: 1
Slave Interface: ens11
MII Status: up
Aggregator ID: 1

MII Status: up
Active Aggregator Info:
        Aggregator ID: 1
        Number of ports: 1 <---
Slave Interface: ens10
MII Status: down <---
Aggregator ID: 1
Slave Interface: ens11
MII Status: up
Aggregator ID: 1

CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/bonding/bond_3ad.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -2573,7 +2573,7 @@ int __bond_3ad_get_active_agg_info(struc
 		return -1;
 
 	ad_info->aggregator_id = aggregator->aggregator_identifier;
-	ad_info->ports = aggregator->num_of_ports;
+	ad_info->ports = __agg_active_ports(aggregator);
 	ad_info->actor_key = aggregator->actor_oper_aggregator_key;
 	ad_info->partner_key = aggregator->partner_oper_aggregator_key;
 	ether_addr_copy(ad_info->partner_system,


Patches currently in stable-queue which might be from jarod@redhat.com are

queue-4.9/bonding-fix-accounting-of-active-ports-in-3ad.patch