diff mbox series

[net-next,v3,2/2] bonding/balance-alb: put all slaves into promisc

Message ID 20210527200051.1871092-3-jarod@redhat.com
State New
Headers show
Series None | expand

Commit Message

Jarod Wilson May 27, 2021, 8 p.m. UTC
Unlike most other modes with a primary interface, ALB mode bonding can
receive on all slaves. That includes traffic destined for a non-local MAC
behind a bridge on top of the bond. In such setups, the bridge driver puts
all ports (including the bond) into promiscuous mode, but we're not
propagating that change down to the non-primary slaves in ALB mode. As a
result, incoming traffic to those interfaces gets dropped. Since ALB can
receive on all slaves, all slaves should get promiscuity changes
propagated to them.

Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Thomas Davis <tadavis@lbl.gov>
Cc: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
---
 drivers/net/bonding/bond_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 666051f91d70..3933219ae773 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -647,9 +647,10 @@  static int bond_check_dev_link(struct bonding *bond,
 static int bond_set_promiscuity(struct bonding *bond, int inc)
 {
 	struct list_head *iter;
-	int err = 0;
+	int mode, err = 0;
 
-	if (bond_uses_primary(bond)) {
+	mode = BOND_MODE(bond);
+	if (mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB) {
 		struct slave *curr_active = rtnl_dereference(bond->curr_active_slave);
 
 		if (curr_active)