[dpdk-stable] [PATCH V2] net/bonding: fix lacp negotiation failed

[luyicai <luyicai@huawei.com>]

From: Yicai Lu <luyicai@huawei.com>

When two host is connected directly without any devices like switch,
rx_machine_update would recieving partner lacp negotiation packets,
which partner's port mac filled with zeros. So in this situation,
it would never go rx_machine branch with correct mac!
Thus bond mode 4 will negotiation failed.

Fixes: 56cbc0817399 ("net/bonding: fix LACP negotiation")
Cc: stable@dpdk.org

Signed-off-by: luyicai <luyicai@huawei.com>
---
v1 -> v2: Adjust commit info style
---
 drivers/net/bonding/rte_eth_bond_8023ad.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
index b77a37d..2002ec0 100644
--- a/drivers/net/bonding/rte_eth_bond_8023ad.c
+++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
@@ -798,7 +798,8 @@
 		RTE_ASSERT(lacp->lacpdu.subtype == SLOW_SUBTYPE_LACP);
 
 		partner = &lacp->lacpdu.partner;
-		if (rte_is_same_ether_addr(&partner->port_params.system,
+		if (rte_is_zero_ether_addr(&partner->port_params.system) ||
+			rte_is_same_ether_addr(&partner->port_params.system,
 			&internals->mode4.mac_addr)) {
 			/* This LACP frame is sending to the bonding port
 			 * so pass it to rx_machine.
-- 
1.9.5.msysgit.1