ethdev: fix possibly incorrect maximum queues

In rte_eth_dev_configure(), device configuration was copied to the dev
struct after get_dev_info() was called to get the max queue information.
In some drivers, though, the max queues can vary depending on the device
configuration - but that information is not available to the driver until
the copy is made.

This patch moves the memcpy of the device configuration into the dev->data
structure before the call to get_dev_info(), thereby making it accessible
to drivers to use when reporting their max queues.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index c0d85d6..76a30fd 100644 (file)
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -901,6 +901,9 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
                return -EBUSY;
        }
 
+       /* Copy the dev_conf parameter into the dev structure */
+       memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
+
        /*
         * Check that the numbers of RX and TX queues are not greater
         * than the maximum number of RX and TX queues supported by the
@@ -925,9 +928,6 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
                return -EINVAL;
        }
 
-       /* Copy the dev_conf parameter into the dev structure */
-       memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
-
        /*
         * If link state interrupt is enabled, check that the
         * device supports it.