[PATCH v4] net/bonding: fix slave add for mode 4

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

Moved the link status validity check from the slave add to the slave
activation step. Otherwise slave add will fail for mode 4 if
the ports are all stopped but only one of them checked.

Fixes: b77d21cc2364 ("ethdev: add link status get/set helper functions")
Bugzilla ID: 52

Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
---
v4: reworked patch
v3: updated commit msg
v2: add fix and Bugzilla references

 drivers/net/bonding/rte_eth_bond_api.c | 8 --------
 drivers/net/bonding/rte_eth_bond_pmd.c | 9 ++++++++-
 2 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_api.c b/drivers/net/bonding/rte_eth_bond_api.c
index d558df8..853b23b 100644
--- a/drivers/net/bonding/rte_eth_bond_api.c
+++ b/drivers/net/bonding/rte_eth_bond_api.c
@@ -345,14 +345,6 @@ __eth_bond_slave_add_lock_free(uint16_t bonded_port_id, uint16_t slave_port_id)
 		internals->tx_queue_offload_capa &= dev_info.tx_queue_offload_capa;
 		internals->flow_type_rss_offloads &= dev_info.flow_type_rss_offloads;
 
-		if (link_properties_valid(bonded_eth_dev,
-				&slave_eth_dev->data->dev_link) != 0) {
-			RTE_BOND_LOG(ERR, "Invalid link properties for slave %d"
-					" in bonding mode %d", slave_port_id,
-					internals->mode);
-			return -1;
-		}
-
 		/* RETA size is GCD of all slaves RETA sizes, so, if all sizes will be
 		 * the power of 2, the lower one is GCD
 		 */
diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index 02d94b1..b84af43 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -2679,7 +2679,14 @@ bond_ethdev_lsc_event_callback(uint16_t port_id, enum rte_eth_event_type type,
 			mac_address_slaves_update(bonded_eth_dev);
 		}
 
-		activate_slave(bonded_eth_dev, port_id);
+		/* check link state properties */
+		if (link_properties_valid(bonded_eth_dev, &link)) {
+			activate_slave(bonded_eth_dev, port_id);
+		} else {
+			RTE_BOND_LOG(ERR, "Invalid link properties for slave %d"
+				     " in bonding mode %d", port_id,
+				     internals->mode);
+		}
 
 		/* If user has defined the primary port then default to using it */
 		if (internals->user_defined_primary_port &&
-- 
2.7.5