netdev - [PATCH v3] bonding: Inactive slaves should keep inactive flag's value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1396407708-4056-1-git-send-email-zheng.x.li@oracle.com>
Date:	Wed,  2 Apr 2014 11:01:48 +0800
From:	Zheng Li <zheng.x.li@...cle.com>
To:	netdev@...r.kernel.org, j.vosburgh@...il.com, fubar@...ibm.com,
	andy@...yhouse.net, vfalico@...hat.com
Cc:	linux-kernel@...r.kernel.org, davem@...emloft.net,
	joe.jin@...cle.com, zheng.x.li@...cle.com
Subject: [PATCH v3] bonding: Inactive slaves should keep inactive flag's value

bond_open is not setting the inactive flag correctly for some modes (alb and
tlb), resulting in error behavior if the bond has been administratively set
down and then back up. This effect should not occur when slaves are added while
the bond is up; it's something that only happens after a down/up bounce of the
bond.

For example, in bond tlb or alb mode, domu send some ARP request which go out
from dom0 bond's active slave, then the ARP broadcast request packets go back to
inactive slave from switch, because the inactive slave's inactive flag is zero,
kernel will receive the packets and pass them to bridge that cause dom0's bridge
map domu's MAC address to port of bond, bridge should map domu's MAC to port of
vif.

Signed-off-by: Zheng Li <zheng.x.li@...cle.com>
Signed-off-by: Jay Vosburgh <j.vosburgh@...il.com>
---
 drivers/net/bonding/bond_main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index e5628fc..b42758f 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3058,7 +3058,7 @@ static int bond_open(struct net_device *bond_dev)
 	if (bond_has_slaves(bond)) {
 		read_lock(&bond->curr_slave_lock);
 		bond_for_each_slave(bond, slave, iter) {
-			if ((bond->params.mode == BOND_MODE_ACTIVEBACKUP)
+			if (USES_PRIMARY(bond->params.mode)
 				&& (slave != bond->curr_active_slave)) {
 				bond_set_slave_inactive_flags(slave,
 							      BOND_SLAVE_NOTIFY_NOW);
-- 
1.7.6.5

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html