linux-kernel - Re: [PATCH net v2] bonding: fix accounting of active ports in 3ad

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Date:   Mon, 22 May 2017 12:06:25 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     jarod@...hat.com
Cc:     linux-kernel@...r.kernel.org, j.vosburgh@...il.com,
        vfalico@...il.com, andy@...yhouse.net, netdev@...r.kernel.org
Subject: Re: [PATCH net v2] bonding: fix accounting of active ports in 3ad

From: Jarod Wilson <jarod@...hat.com>
Date: Fri, 19 May 2017 19:43:45 -0400

> 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.
 ...
> Signed-off-by: Jarod Wilson <jarod@...hat.com>
> ---
> v2: fix incorrect git sha reference, add more testing data

Applied and queued up for -stable, thanks Jarod!