[dpdk-dev] [PATCH v2] net/bonding: fix race condition

[Radu Nicolau <radu.nicolau@intel.com>]

Race condition can appear in the bond_mode_8023ad_periodic_cb()
callback when bonding port is stopped, reconfigured and restarted.

Re-ordered calls in bond_ethdev_start() to have callback alarm set
after slave ports are reconfigured.

Fixes: 2efb58cbab6e ("bond: new link bonding library")
Cc: stable@dpdk.org

Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
---
v2: reworked patch

 drivers/net/bonding/rte_eth_bond_pmd.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index fc4d4fd..70ec728 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -2113,10 +2113,6 @@ bond_ethdev_start(struct rte_eth_dev *eth_dev)
 		}
 	}
 
-	/* Update all slave devices MACs*/
-	if (mac_address_slaves_update(eth_dev) != 0)
-		goto out_err;
-
 	/* If bonded device is configure in promiscuous mode then re-apply config */
 	if (internals->promiscuous_en)
 		bond_ethdev_promiscuous_enable(eth_dev);
@@ -2157,6 +2153,10 @@ bond_ethdev_start(struct rte_eth_dev *eth_dev)
 			(void *)&rte_eth_devices[internals->port_id]);
 	}
 
+	/* Update all slave devices MACs*/
+	if (mac_address_slaves_update(eth_dev) != 0)
+		goto out_err;
+
 	if (internals->user_defined_primary_port)
 		bond_ethdev_primary_set(internals, internals->primary_port);
 
-- 
2.7.5