bonding: document two undocumented options.

Commit 655f8919d549ad1872e24d826b6ce42530516d2e
    bonding: add min links parameter to 802.3ad

and commit ebd8e4977a87cb81d93c62a9bff0102a9713722f
    bonding: add all_slaves_active parameter

introduced new options to bonding, but didn't provide the documentation
for those options.

V2: add the default value for both options.
V3: document the exact behavior of min_links default value.

Signed-off-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt
index 5dd960d751743ba8a49b7e28c69628cf00807930..91df678fb7f88428f3989da217647d676e7121de 100644 (file)
--- a/Documentation/networking/bonding.txt
+++ b/Documentation/networking/bonding.txt
@@ -238,6 +238,18 @@ ad_select
 
        This option was added in bonding version 3.4.0.
 
+all_slaves_active
+
+       Specifies that duplicate frames (received on inactive ports) should be
+       dropped (0) or delivered (1).
+
+       Normally, bonding will drop duplicate frames (received on inactive
+       ports), which is desirable for most users. But there are some times
+       it is nice to allow duplicate frames to be delivered.
+
+       The default value is 0 (drop duplicate frames received on inactive
+       ports).
+
 arp_interval
 
        Specifies the ARP link monitoring frequency in milliseconds.
@@ -433,6 +445,23 @@ miimon
        determined.  See the High Availability section for additional
        information.  The default value is 0.
 
+min_links
+
+       Specifies the minimum number of links that must be active before
+       asserting carrier. It is similar to the Cisco EtherChannel min-links
+       feature. This allows setting the minimum number of member ports that
+       must be up (link-up state) before marking the bond device as up
+       (carrier on). This is useful for situations where higher level services
+       such as clustering want to ensure a minimum number of low bandwidth
+       links are active before switchover. This option only affect 802.3ad
+       mode.
+
+       The default value is 0. This will cause carrier to be asserted (for
+       802.3ad mode) whenever there is an active aggregator, regardless of the
+       number of available links in that aggregator. Note that, because an
+       aggregator cannot be active without at least one available link,
+       setting this option to 0 or to 1 has the exact same effect.
+
 mode
 
        Specifies one of the bonding policies. The default is