net/bonding: fix bonding in 8023ad mode

This patch blocks possibility to set master bonding by
rte_eth_bond_mode_set() in 802.3ad mode, as the API
doesn't prevent this.

Fixes: 6d72657ce379 ("net/bonding: add other aggregator modes")
Cc: stable@dpdk.org
Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
Reviewed-by: Radu Nicolau <radu.nicolau@intel.com>

diff --git a/drivers/net/bonding/rte_eth_bond_api.c b/drivers/net/bonding/rte_eth_bond_api.c
index f42d318..5777c11 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_api.c
+++ b/drivers/net/bonding/rte_eth_bond_api.c
@@ -33,6 +33,25 @@ valid_bonded_port_id(uint16_t port_id)
        return check_for_bonded_ethdev(&rte_eth_devices[port_id]);
 }
 
+int
+check_for_master_bonded_ethdev(const struct rte_eth_dev *eth_dev)
+{
+       int i;
+       struct bond_dev_private *internals;
+
+       if (check_for_bonded_ethdev(eth_dev) != 0)
+               return 0;
+
+       internals = eth_dev->data->dev_private;
+
+       /* Check if any of slave devices is a bonded device */
+       for (i = 0; i < internals->slave_count; i++)
+               if (valid_bonded_port_id(internals->slaves[i].port_id) == 0)
+                       return 1;
+
+       return 0;
+}
+
 int
 valid_slave_port_id(uint16_t port_id, uint8_t mode)
 {
@@ -467,10 +486,18 @@ rte_eth_bond_slave_remove(uint16_t bonded_port_id, uint16_t slave_port_id)
 int
 rte_eth_bond_mode_set(uint16_t bonded_port_id, uint8_t mode)
 {
+       struct rte_eth_dev *bonded_eth_dev;
+
        if (valid_bonded_port_id(bonded_port_id) != 0)
                return -1;
 
-       return bond_ethdev_mode_set(&rte_eth_devices[bonded_port_id], mode);
+       bonded_eth_dev = &rte_eth_devices[bonded_port_id];
+
+       if (check_for_master_bonded_ethdev(bonded_eth_dev) != 0 &&
+                       mode == BONDING_MODE_8023AD)
+               return -1;
+
+       return bond_ethdev_mode_set(bonded_eth_dev, mode);
 }
 
 int

diff --git a/drivers/net/bonding/rte_eth_bond_private.h b/drivers/net/bonding/rte_eth_bond_private.h
index 3bade02..3b32311 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_private.h
+++ b/drivers/net/bonding/rte_eth_bond_private.h
@@ -153,6 +153,9 @@ struct bond_dev_private {
 
 extern const struct eth_dev_ops default_dev_ops;
 
+int
+check_for_master_bonded_ethdev(const struct rte_eth_dev *eth_dev);
+
 int
 check_for_bonded_ethdev(const struct rte_eth_dev *eth_dev);