net/bonding: fix LACP negotiation

When two host is connected directly without any devices like switch,
rx_machine_update would receiving partner LACP negotiation packets,
and partner's port mac is filled with zeros in this packet, which is
different with internal's mode4 mac. So in this situation, it would
never go rx_machine branch and then execute mac swap for negotiation!
Thus bond mode 4 will negotiation failed.

Fixes: 56cbc0817399 ("net/bonding: fix LACP negotiation")
Cc: stable@dpdk.org
Signed-off-by: Yicai Lu <luyicai@huawei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>

diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
index b7ffa2f..3991825 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_8023ad.c
+++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
@@ -798,7 +798,8 @@ rx_machine_update(struct bond_dev_private *internals, uint16_t slave_id,
                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.