net/bonding: inherit maximum Rx packet length

[dpdk.git] / drivers / net / bonding / rte_eth_bond_api.c

diff --git a/drivers/net/bonding/rte_eth_bond_api.c b/drivers/net/bonding/rte_eth_bond_api.c
index 53df9fe..203ebe9 100644 (file)
--- a/drivers/net/bonding/rte_eth_bond_api.c
+++ b/drivers/net/bonding/rte_eth_bond_api.c
@@ -243,6 +243,8 @@ rte_eth_bond_create(const char *name, uint8_t mode, uint8_t socket_id)
        internals->active_slave_count = 0;
        internals->rx_offload_capa = 0;
        internals->tx_offload_capa = 0;
+       internals->candidate_max_rx_pktlen = 0;
+       internals->max_rx_pktlen = 0;
 
        /* Initially allow to choose any offload type */
        internals->flow_type_rss_offloads = ETH_RSS_PROTO_MASK;
@@ -327,9 +329,15 @@ __eth_bond_slave_add_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
 
        /* Add slave details to bonded device */
        slave_eth_dev->data->dev_flags |= RTE_ETH_DEV_BONDED_SLAVE;
-       slave_add(internals, slave_eth_dev);
 
        rte_eth_dev_info_get(slave_port_id, &dev_info);
+       if (dev_info.max_rx_pktlen < internals->max_rx_pktlen) {
+               RTE_BOND_LOG(ERR, "Slave (port %u) max_rx_pktlen too small",
+                            slave_port_id);
+               return -1;
+       }
+
+       slave_add(internals, slave_eth_dev);
 
        /* We need to store slaves reta_size to be able to synchronize RETA for all
         * slave devices even if its sizes are different.
@@ -361,6 +369,9 @@ __eth_bond_slave_add_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
                internals->tx_offload_capa = dev_info.tx_offload_capa;
                internals->flow_type_rss_offloads = dev_info.flow_type_rss_offloads;
 
+               /* Inherit first slave's max rx packet size */
+               internals->candidate_max_rx_pktlen = dev_info.max_rx_pktlen;
+
        } else {
                /* Check slave link properties are supported if props are set,
                 * all slaves must be the same */
@@ -387,6 +398,9 @@ __eth_bond_slave_add_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
                if (internals->reta_size > dev_info.reta_size)
                        internals->reta_size = dev_info.reta_size;
 
+               if (!internals->max_rx_pktlen &&
+                   dev_info.max_rx_pktlen < internals->candidate_max_rx_pktlen)
+                       internals->candidate_max_rx_pktlen = dev_info.max_rx_pktlen;
        }
 
        bonded_eth_dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf &=
@@ -532,6 +546,8 @@ __eth_bond_slave_remove_lock_free(uint8_t bonded_port_id, uint8_t slave_port_id)
                internals->tx_offload_capa = 0;
                internals->flow_type_rss_offloads = ETH_RSS_PROTO_MASK;
                internals->reta_size = 0;
+               internals->candidate_max_rx_pktlen = 0;
+               internals->max_rx_pktlen = 0;
        }
        return 0;
 }