net/bonding: allow slaves to also be bonded devices

This patch removes restrictions in bonded device library which prevent a
bonded device to be added to another bonded device with the limitation
that 802.3ad mode is not supported if one or more slaves is also a
bonded device,

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>

diff --git a/drivers/net/bonding/rte_eth_bond_api.c b/drivers/net/bonding/rte_eth_bond_api.c
index 82c4499..824ab4f 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_api.c
+++ b/drivers/net/bonding/rte_eth_bond_api.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -63,13 +63,18 @@ valid_bonded_port_id(uint8_t port_id)
 }
 
 int
-valid_slave_port_id(uint8_t port_id)
+valid_slave_port_id(uint8_t port_id, uint8_t mode)
 {
        RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -1);
 
        /* Verify that port_id refers to a non bonded port */
-       if (check_for_bonded_ethdev(&rte_eth_devices[port_id]) == 0)
+       if (check_for_bonded_ethdev(&rte_eth_devices[port_id]) == 0 &&
+                       mode == BONDING_MODE_8023AD) {
+               RTE_BOND_LOG(ERR, "Cannot add slave to bonded device in 802.3ad"
+                               " mode as slave is also a bonded device, only "
+                               "physical devices can be support in this mode.");
                return -1;
+       }
 
        return 0;
 }
@@ -235,12 +240,12 @@ __eth_bond_slave_add_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
        struct rte_eth_link link_props;
        struct rte_eth_dev_info dev_info;
 
-       if (valid_slave_port_id(slave_port_id) != 0)
-               return -1;
-
        bonded_eth_dev = &rte_eth_devices[bonded_port_id];
        internals = bonded_eth_dev->data->dev_private;
 
+       if (valid_slave_port_id(slave_port_id, internals->mode) != 0)
+               return -1;
+
        slave_eth_dev = &rte_eth_devices[slave_port_id];
        if (slave_eth_dev->data->dev_flags & RTE_ETH_DEV_BONDED_SLAVE) {
                RTE_BOND_LOG(ERR, "Slave device is already a slave of a bonded device");
@@ -389,12 +394,12 @@ __eth_bond_slave_remove_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
        struct rte_eth_dev *slave_eth_dev;
        int i, slave_idx;
 
-       if (valid_slave_port_id(slave_port_id) != 0)
-               return -1;
-
        bonded_eth_dev = &rte_eth_devices[bonded_port_id];
        internals = bonded_eth_dev->data->dev_private;
 
+       if (valid_slave_port_id(slave_port_id, internals->mode) < 0)
+               return -1;
+
        /* first remove from active slave list */
        slave_idx = find_slave_by_id(internals->active_slaves,
                internals->active_slave_count, slave_port_id);
@@ -509,13 +514,14 @@ rte_eth_bond_primary_set(uint8_t bonded_port_id, uint8_t slave_port_id)
 {
        struct bond_dev_private *internals;
 
+       internals =  rte_eth_devices[bonded_port_id].data->dev_private;
+
        if (valid_bonded_port_id(bonded_port_id) != 0)
                return -1;
 
-       if (valid_slave_port_id(slave_port_id) != 0)
+       if (valid_slave_port_id(slave_port_id, internals->mode) != 0)
                return -1;
 
-       internals =  rte_eth_devices[bonded_port_id].data->dev_private;
 
        internals->user_defined_primary_port = 1;
        internals->primary_port = slave_port_id;

diff --git a/drivers/net/bonding/rte_eth_bond_private.h b/drivers/net/bonding/rte_eth_bond_private.h
index 7295192..8fbf4bf 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_private.h
+++ b/drivers/net/bonding/rte_eth_bond_private.h
@@ -204,7 +204,7 @@ int
 valid_bonded_port_id(uint8_t port_id);
 
 int
-valid_slave_port_id(uint8_t port_id);
+valid_slave_port_id(uint8_t port_id, uint8_t mode);
 
 void
 deactivate_slave(struct rte_eth_dev *eth_dev, uint8_t port_id);