bonding: permit using arp_validate with non-ab modes

Currently it's disabled because it's sometimes hard, in typical configs, to
make it work - because of the nature how the loadbalance modes work - as
it's hard to deliver valid arp replies to correct slaves by the switch.

However we still can use arp_validation in loadbalance with several other
configs, per example with arp_validate == 2 for backup with one broadcast
domain, without the switch(es) doing any balancing - this way we'd be (a
bit more) sure that the slave is up.

So, enable it to let users decide which one works/suits them best. Also
correct the mode limitation from BOND_OPT_ARP_VALIDATE.

CC: Nikolay Aleksandrov <nikolay@redhat.com>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Acked-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/Documentation/networking/bonding.txt b/Documentation/networking/bonding.txt
index 5cdb22971d19..96b4ad89cf25 100644
--- a/Documentation/networking/bonding.txt
+++ b/Documentation/networking/bonding.txt
@@ -270,9 +270,9 @@ arp_ip_target
 arp_validate
 
         Specifies whether or not ARP probes and replies should be
-        validated in the active-backup mode.  This causes the ARP
-        monitor to examine the incoming ARP requests and replies, and
-        only consider a slave to be up if it is receiving the
+        validated in any mode that supports arp monitoring.  This causes
+        the ARP monitor to examine the incoming ARP requests and replies,
+        and only consider a slave to be up if it is receiving the
         appropriate ARP traffic.
 
         Possible values are: